1//===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// Common function interceptors for tools like AddressSanitizer, 10// ThreadSanitizer, MemorySanitizer, etc. 11// 12// This file should be included into the tool's interceptor file, 13// which has to define its own macros: 14// COMMON_INTERCEPTOR_ENTER 15// COMMON_INTERCEPTOR_ENTER_NOIGNORE 16// COMMON_INTERCEPTOR_READ_RANGE 17// COMMON_INTERCEPTOR_WRITE_RANGE 18// COMMON_INTERCEPTOR_INITIALIZE_RANGE 19// COMMON_INTERCEPTOR_DIR_ACQUIRE 20// COMMON_INTERCEPTOR_FD_ACQUIRE 21// COMMON_INTERCEPTOR_FD_RELEASE 22// COMMON_INTERCEPTOR_FD_ACCESS 23// COMMON_INTERCEPTOR_SET_THREAD_NAME 24// COMMON_INTERCEPTOR_DLOPEN 25// COMMON_INTERCEPTOR_ON_EXIT 26// COMMON_INTERCEPTOR_MUTEX_PRE_LOCK 27// COMMON_INTERCEPTOR_MUTEX_POST_LOCK 28// COMMON_INTERCEPTOR_MUTEX_UNLOCK 29// COMMON_INTERCEPTOR_MUTEX_REPAIR 30// COMMON_INTERCEPTOR_SET_PTHREAD_NAME 31// COMMON_INTERCEPTOR_HANDLE_RECVMSG 32// COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED 33// COMMON_INTERCEPTOR_MEMSET_IMPL 34// COMMON_INTERCEPTOR_MEMMOVE_IMPL 35// COMMON_INTERCEPTOR_MEMCPY_IMPL 36// COMMON_INTERCEPTOR_MMAP_IMPL 37// COMMON_INTERCEPTOR_COPY_STRING 38// COMMON_INTERCEPTOR_STRNDUP_IMPL 39// COMMON_INTERCEPTOR_STRERROR 40//===----------------------------------------------------------------------===// 41 42#include "interception/interception.h" 43#include "sanitizer_addrhashmap.h" 44#include "sanitizer_errno.h" 45#include "sanitizer_placement_new.h" 46#include "sanitizer_platform_interceptors.h" 47#include "sanitizer_symbolizer.h" 48#include "sanitizer_tls_get_addr.h" 49 50#include <stdarg.h> 51 52#if SANITIZER_INTERCEPTOR_HOOKS 53#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...) f(__VA_ARGS__); 54#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...) \ 55 SANITIZER_INTERFACE_WEAK_DEF(void, f, __VA_ARGS__) {} 56#else 57#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...) 58#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...) 59 60#endif // SANITIZER_INTERCEPTOR_HOOKS 61 62#if SANITIZER_WINDOWS && !defined(va_copy) 63#define va_copy(dst, src) ((dst) = (src)) 64#endif // _WIN32 65 66#if SANITIZER_FREEBSD 67#define pthread_setname_np pthread_set_name_np 68#define inet_aton __inet_aton 69#define inet_pton __inet_pton 70#define iconv __bsd_iconv 71#endif 72 73#if SANITIZER_NETBSD 74#define clock_getres __clock_getres50 75#define clock_gettime __clock_gettime50 76#define clock_settime __clock_settime50 77#define ctime __ctime50 78#define ctime_r __ctime_r50 79#define devname __devname50 80#define fgetpos __fgetpos50 81#define fsetpos __fsetpos50 82#define fstatvfs __fstatvfs90 83#define fstatvfs1 __fstatvfs190 84#define fts_children __fts_children60 85#define fts_close __fts_close60 86#define fts_open __fts_open60 87#define fts_read __fts_read60 88#define fts_set __fts_set60 89#define getitimer __getitimer50 90#define getmntinfo __getmntinfo90 91#define getpwent __getpwent50 92#define getpwnam __getpwnam50 93#define getpwnam_r __getpwnam_r50 94#define getpwuid __getpwuid50 95#define getpwuid_r __getpwuid_r50 96#define getutent __getutent50 97#define getutxent __getutxent50 98#define getutxid __getutxid50 99#define getutxline __getutxline50 100#define getvfsstat __getvfsstat90 101#define pututxline __pututxline50 102#define glob __glob30 103#define gmtime __gmtime50 104#define gmtime_r __gmtime_r50 105#define localtime __locatime50 106#define localtime_r __localtime_r50 107#define mktime __mktime50 108#define lstat __lstat50 109#define opendir __opendir30 110#define readdir __readdir30 111#define readdir_r __readdir_r30 112#define scandir __scandir30 113#define setitimer __setitimer50 114#define setlocale __setlocale50 115#define shmctl __shmctl50 116#define sigaltstack __sigaltstack14 117#define sigemptyset __sigemptyset14 118#define sigfillset __sigfillset14 119#define sigpending __sigpending14 120#define sigprocmask __sigprocmask14 121#define sigtimedwait __sigtimedwait50 122#define stat __stat50 123#define statvfs __statvfs90 124#define statvfs1 __statvfs190 125#define time __time50 126#define times __times13 127#define unvis __unvis50 128#define wait3 __wait350 129#define wait4 __wait450 130extern const unsigned short *_ctype_tab_; 131extern const short *_toupper_tab_; 132extern const short *_tolower_tab_; 133#endif 134 135#if SANITIZER_MUSL && \ 136 (defined(__i386__) || defined(__arm__) || SANITIZER_MIPS32 || SANITIZER_PPC32) 137// musl 1.2.0 on existing 32-bit architectures uses new symbol names for the 138// time-related functions that take 64-bit time_t values. See 139// https://musl.libc.org/time64.html 140#define adjtime __adjtime64 141#define adjtimex __adjtimex_time64 142#define aio_suspend __aio_suspend_time64 143#define clock_adjtime __clock_adjtime64 144#define clock_getres __clock_getres_time64 145#define clock_gettime __clock_gettime64 146#define clock_nanosleep __clock_nanosleep_time64 147#define clock_settime __clock_settime64 148#define cnd_timedwait __cnd_timedwait_time64 149#define ctime __ctime64 150#define ctime_r __ctime64_r 151#define difftime __difftime64 152#define dlsym __dlsym_time64 153#define fstatat __fstatat_time64 154#define fstat __fstat_time64 155#define ftime __ftime64 156#define futimens __futimens_time64 157#define futimesat __futimesat_time64 158#define futimes __futimes_time64 159#define getitimer __getitimer_time64 160#define getrusage __getrusage_time64 161#define gettimeofday __gettimeofday_time64 162#define gmtime __gmtime64 163#define gmtime_r __gmtime64_r 164#define localtime __localtime64 165#define localtime_r __localtime64_r 166#define lstat __lstat_time64 167#define lutimes __lutimes_time64 168#define mktime __mktime64 169#define mq_timedreceive __mq_timedreceive_time64 170#define mq_timedsend __mq_timedsend_time64 171#define mtx_timedlock __mtx_timedlock_time64 172#define nanosleep __nanosleep_time64 173#define ppoll __ppoll_time64 174#define pselect __pselect_time64 175#define pthread_cond_timedwait __pthread_cond_timedwait_time64 176#define pthread_mutex_timedlock __pthread_mutex_timedlock_time64 177#define pthread_rwlock_timedrdlock __pthread_rwlock_timedrdlock_time64 178#define pthread_rwlock_timedwrlock __pthread_rwlock_timedwrlock_time64 179#define pthread_timedjoin_np __pthread_timedjoin_np_time64 180#define recvmmsg __recvmmsg_time64 181#define sched_rr_get_interval __sched_rr_get_interval_time64 182#define select __select_time64 183#define semtimedop __semtimedop_time64 184#define sem_timedwait __sem_timedwait_time64 185#define setitimer __setitimer_time64 186#define settimeofday __settimeofday_time64 187#define sigtimedwait __sigtimedwait_time64 188#define stat __stat_time64 189#define stime __stime64 190#define thrd_sleep __thrd_sleep_time64 191#define timegm __timegm_time64 192#define timerfd_gettime __timerfd_gettime64 193#define timerfd_settime __timerfd_settime64 194#define timer_gettime __timer_gettime64 195#define timer_settime __timer_settime64 196#define timespec_get __timespec_get_time64 197#define time __time64 198#define utimensat __utimensat_time64 199#define utimes __utimes_time64 200#define utime __utime64 201#define wait3 __wait3_time64 202#define wait4 __wait4_time64 203#endif 204 205// Platform-specific options. 206#if SANITIZER_APPLE 207#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 0 208#elif SANITIZER_WINDOWS64 209#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 0 210#else 211#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 1 212#endif // SANITIZER_APPLE 213 214#ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE 215#define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {} 216#endif 217 218#ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM 219#define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {} 220#endif 221 222#ifndef COMMON_INTERCEPTOR_FD_ACCESS 223#define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {} 224#endif 225 226#ifndef COMMON_INTERCEPTOR_MUTEX_PRE_LOCK 227#define COMMON_INTERCEPTOR_MUTEX_PRE_LOCK(ctx, m) {} 228#endif 229 230#ifndef COMMON_INTERCEPTOR_MUTEX_POST_LOCK 231#define COMMON_INTERCEPTOR_MUTEX_POST_LOCK(ctx, m) {} 232#endif 233 234#ifndef COMMON_INTERCEPTOR_MUTEX_UNLOCK 235#define COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m) {} 236#endif 237 238#ifndef COMMON_INTERCEPTOR_MUTEX_REPAIR 239#define COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m) {} 240#endif 241 242#ifndef COMMON_INTERCEPTOR_MUTEX_INVALID 243#define COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m) {} 244#endif 245 246#ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG 247#define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg)) 248#endif 249 250#ifndef COMMON_INTERCEPTOR_FILE_OPEN 251#define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {} 252#endif 253 254#ifndef COMMON_INTERCEPTOR_FILE_CLOSE 255#define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {} 256#endif 257 258#ifndef COMMON_INTERCEPTOR_LIBRARY_LOADED 259#define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) {} 260#endif 261 262#ifndef COMMON_INTERCEPTOR_LIBRARY_UNLOADED 263#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED() {} 264#endif 265 266#ifndef COMMON_INTERCEPTOR_ENTER_NOIGNORE 267#define COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, ...) \ 268 COMMON_INTERCEPTOR_ENTER(ctx, __VA_ARGS__) 269#endif 270 271#ifndef COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED 272#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED (0) 273#endif 274 275#define COMMON_INTERCEPTOR_READ_STRING(ctx, s, n) \ 276 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s), \ 277 common_flags()->strict_string_checks ? (internal_strlen(s)) + 1 : (n) ) 278 279#ifndef COMMON_INTERCEPTOR_DLOPEN 280#define COMMON_INTERCEPTOR_DLOPEN(filename, flag) \ 281 ({ CheckNoDeepBind(filename, flag); REAL(dlopen)(filename, flag); }) 282#endif 283 284#ifndef COMMON_INTERCEPTOR_GET_TLS_RANGE 285#define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) *begin = *end = 0; 286#endif 287 288#ifndef COMMON_INTERCEPTOR_ACQUIRE 289#define COMMON_INTERCEPTOR_ACQUIRE(ctx, u) {} 290#endif 291 292#ifndef COMMON_INTERCEPTOR_RELEASE 293#define COMMON_INTERCEPTOR_RELEASE(ctx, u) {} 294#endif 295 296#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_START 297#define COMMON_INTERCEPTOR_USER_CALLBACK_START() {} 298#endif 299 300#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_END 301#define COMMON_INTERCEPTOR_USER_CALLBACK_END() {} 302#endif 303 304#ifdef SANITIZER_NLDBL_VERSION 305#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \ 306 COMMON_INTERCEPT_FUNCTION_VER(fn, SANITIZER_NLDBL_VERSION) 307#else 308#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \ 309 COMMON_INTERCEPT_FUNCTION(fn) 310#endif 311 312#if SANITIZER_GLIBC 313// If we could not find the versioned symbol, fall back to an unversioned 314// lookup. This is needed to work around a GLibc bug that causes dlsym 315// with RTLD_NEXT to return the oldest versioned symbol. 316// See https://sourceware.org/bugzilla/show_bug.cgi?id=14932. 317// For certain symbols (e.g. regexec) we have to perform a versioned lookup, 318// but that versioned symbol will only exist for architectures where the 319// oldest Glibc version pre-dates support for that architecture. 320// For example, regexec@GLIBC_2.3.4 exists on x86_64, but not RISC-V. 321// See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98920. 322#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \ 323 COMMON_INTERCEPT_FUNCTION_VER_UNVERSIONED_FALLBACK(fn, ver) 324#else 325#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \ 326 COMMON_INTERCEPT_FUNCTION(fn) 327#endif 328 329#ifndef COMMON_INTERCEPTOR_MEMSET_IMPL 330#define COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, dst, v, size) \ 331 { \ 332 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) \ 333 return internal_memset(dst, v, size); \ 334 COMMON_INTERCEPTOR_ENTER(ctx, memset, dst, v, size); \ 335 if (common_flags()->intercept_intrin) \ 336 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size); \ 337 return REAL(memset)(dst, v, size); \ 338 } 339#endif 340 341#ifndef COMMON_INTERCEPTOR_MEMMOVE_IMPL 342#define COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size) \ 343 { \ 344 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) \ 345 return internal_memmove(dst, src, size); \ 346 COMMON_INTERCEPTOR_ENTER(ctx, memmove, dst, src, size); \ 347 if (common_flags()->intercept_intrin) { \ 348 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size); \ 349 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, size); \ 350 } \ 351 return REAL(memmove)(dst, src, size); \ 352 } 353#endif 354 355#ifndef COMMON_INTERCEPTOR_MEMCPY_IMPL 356#define COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, dst, src, size) \ 357 { \ 358 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) { \ 359 return internal_memmove(dst, src, size); \ 360 } \ 361 COMMON_INTERCEPTOR_ENTER(ctx, memcpy, dst, src, size); \ 362 if (common_flags()->intercept_intrin) { \ 363 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size); \ 364 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, size); \ 365 } \ 366 return REAL(memcpy)(dst, src, size); \ 367 } 368#endif 369 370#ifndef COMMON_INTERCEPTOR_MMAP_IMPL 371#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, \ 372 off) \ 373 { return REAL(mmap)(addr, sz, prot, flags, fd, off); } 374#endif 375 376#ifndef COMMON_INTERCEPTOR_COPY_STRING 377#define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) {} 378#endif 379 380#ifndef COMMON_INTERCEPTOR_STRNDUP_IMPL 381#define COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size) \ 382 COMMON_INTERCEPTOR_ENTER(ctx, strndup, s, size); \ 383 uptr copy_length = internal_strnlen(s, size); \ 384 char *new_mem = (char *)WRAP(malloc)(copy_length + 1); \ 385 if (common_flags()->intercept_strndup) { \ 386 COMMON_INTERCEPTOR_READ_STRING(ctx, s, Min(size, copy_length + 1)); \ 387 } \ 388 if (new_mem) { \ 389 COMMON_INTERCEPTOR_COPY_STRING(ctx, new_mem, s, copy_length); \ 390 internal_memcpy(new_mem, s, copy_length); \ 391 new_mem[copy_length] = '\0'; \ 392 } \ 393 return new_mem; 394#endif 395 396#ifndef COMMON_INTERCEPTOR_STRERROR 397#define COMMON_INTERCEPTOR_STRERROR() {} 398#endif 399 400struct FileMetadata { 401 // For open_memstream(). 402 char **addr; 403 SIZE_T *size; 404}; 405 406struct CommonInterceptorMetadata { 407 enum { 408 CIMT_INVALID = 0, 409 CIMT_FILE 410 } type; 411 union { 412 FileMetadata file; 413 }; 414}; 415 416#if SI_POSIX 417typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap; 418 419static MetadataHashMap *interceptor_metadata_map; 420 421UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr, 422 const FileMetadata &file) { 423 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr); 424 CHECK(h.created()); 425 h->type = CommonInterceptorMetadata::CIMT_FILE; 426 h->file = file; 427} 428 429UNUSED static const FileMetadata *GetInterceptorMetadata( 430 __sanitizer_FILE *addr) { 431 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, 432 /* remove */ false, 433 /* create */ false); 434 if (addr && h.exists()) { 435 CHECK(!h.created()); 436 CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE); 437 return &h->file; 438 } else { 439 return 0; 440 } 441} 442 443UNUSED static void DeleteInterceptorMetadata(void *addr) { 444 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true); 445 CHECK(h.exists()); 446} 447#endif // SI_POSIX 448 449#if SANITIZER_INTERCEPT_STRLEN 450INTERCEPTOR(SIZE_T, strlen, const char *s) { 451 // Sometimes strlen is called prior to InitializeCommonInterceptors, 452 // in which case the REAL(strlen) typically used in 453 // COMMON_INTERCEPTOR_ENTER will fail. We use internal_strlen here 454 // to handle that. 455 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 456 return internal_strlen(s); 457 void *ctx; 458 COMMON_INTERCEPTOR_ENTER(ctx, strlen, s); 459 SIZE_T result = REAL(strlen)(s); 460 if (common_flags()->intercept_strlen) 461 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, result + 1); 462 return result; 463} 464#define INIT_STRLEN COMMON_INTERCEPT_FUNCTION(strlen) 465#else 466#define INIT_STRLEN 467#endif 468 469#if SANITIZER_INTERCEPT_STRNLEN 470INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T maxlen) { 471 void *ctx; 472 COMMON_INTERCEPTOR_ENTER(ctx, strnlen, s, maxlen); 473 SIZE_T length = REAL(strnlen)(s, maxlen); 474 if (common_flags()->intercept_strlen) 475 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, Min(length + 1, maxlen)); 476 return length; 477} 478#define INIT_STRNLEN COMMON_INTERCEPT_FUNCTION(strnlen) 479#else 480#define INIT_STRNLEN 481#endif 482 483#if SANITIZER_INTERCEPT_STRNDUP 484INTERCEPTOR(char*, strndup, const char *s, uptr size) { 485 void *ctx; 486 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size); 487} 488#define INIT_STRNDUP COMMON_INTERCEPT_FUNCTION(strndup) 489#else 490#define INIT_STRNDUP 491#endif // SANITIZER_INTERCEPT_STRNDUP 492 493#if SANITIZER_INTERCEPT___STRNDUP 494INTERCEPTOR(char*, __strndup, const char *s, uptr size) { 495 void *ctx; 496 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size); 497} 498#define INIT___STRNDUP COMMON_INTERCEPT_FUNCTION(__strndup) 499#else 500#define INIT___STRNDUP 501#endif // SANITIZER_INTERCEPT___STRNDUP 502 503#if SANITIZER_INTERCEPT_TEXTDOMAIN 504INTERCEPTOR(char*, textdomain, const char *domainname) { 505 void *ctx; 506 COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname); 507 if (domainname) COMMON_INTERCEPTOR_READ_STRING(ctx, domainname, 0); 508 char *domain = REAL(textdomain)(domainname); 509 if (domain) { 510 COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, internal_strlen(domain) + 1); 511 } 512 return domain; 513} 514#define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain) 515#else 516#define INIT_TEXTDOMAIN 517#endif 518 519#if SANITIZER_INTERCEPT_STRCMP 520static inline int CharCmpX(unsigned char c1, unsigned char c2) { 521 return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1; 522} 523 524DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, uptr called_pc, 525 const char *s1, const char *s2, int result) 526 527INTERCEPTOR(int, strcmp, const char *s1, const char *s2) { 528 void *ctx; 529 COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2); 530 unsigned char c1, c2; 531 uptr i; 532 for (i = 0;; i++) { 533 c1 = (unsigned char)s1[i]; 534 c2 = (unsigned char)s2[i]; 535 if (c1 != c2 || c1 == '\0') break; 536 } 537 if (common_flags()->intercept_strcmp) { 538 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1); 539 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1); 540 } 541 int result = CharCmpX(c1, c2); 542 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, GET_CALLER_PC(), s1, 543 s2, result); 544 return result; 545} 546 547DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, uptr called_pc, 548 const char *s1, const char *s2, uptr n, 549 int result) 550 551INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr size) { 552 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 553 return internal_strncmp(s1, s2, size); 554 void *ctx; 555 COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size); 556 unsigned char c1 = 0, c2 = 0; 557 uptr i; 558 for (i = 0; i < size; i++) { 559 c1 = (unsigned char)s1[i]; 560 c2 = (unsigned char)s2[i]; 561 if (c1 != c2 || c1 == '\0') break; 562 } 563 uptr i1 = i; 564 uptr i2 = i; 565 if (common_flags()->strict_string_checks) { 566 for (; i1 < size && s1[i1]; i1++) {} 567 for (; i2 < size && s2[i2]; i2++) {} 568 } 569 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size)); 570 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size)); 571 int result = CharCmpX(c1, c2); 572 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, GET_CALLER_PC(), s1, 573 s2, size, result); 574 return result; 575} 576 577#define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp) 578#define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp) 579#else 580#define INIT_STRCMP 581#define INIT_STRNCMP 582#endif 583 584#if SANITIZER_INTERCEPT_STRCASECMP 585static inline int CharCaseCmp(unsigned char c1, unsigned char c2) { 586 int c1_low = ToLower(c1); 587 int c2_low = ToLower(c2); 588 return c1_low - c2_low; 589} 590 591DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, uptr called_pc, 592 const char *s1, const char *s2, int result) 593 594INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) { 595 void *ctx; 596 COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2); 597 unsigned char c1 = 0, c2 = 0; 598 uptr i; 599 for (i = 0;; i++) { 600 c1 = (unsigned char)s1[i]; 601 c2 = (unsigned char)s2[i]; 602 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; 603 } 604 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1); 605 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1); 606 int result = CharCaseCmp(c1, c2); 607 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, GET_CALLER_PC(), 608 s1, s2, result); 609 return result; 610} 611 612DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, uptr called_pc, 613 const char *s1, const char *s2, uptr size, 614 int result) 615 616INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T size) { 617 void *ctx; 618 COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, size); 619 unsigned char c1 = 0, c2 = 0; 620 uptr i; 621 for (i = 0; i < size; i++) { 622 c1 = (unsigned char)s1[i]; 623 c2 = (unsigned char)s2[i]; 624 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; 625 } 626 uptr i1 = i; 627 uptr i2 = i; 628 if (common_flags()->strict_string_checks) { 629 for (; i1 < size && s1[i1]; i1++) {} 630 for (; i2 < size && s2[i2]; i2++) {} 631 } 632 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size)); 633 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size)); 634 int result = CharCaseCmp(c1, c2); 635 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, GET_CALLER_PC(), 636 s1, s2, size, result); 637 return result; 638} 639 640#define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp) 641#define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp) 642#else 643#define INIT_STRCASECMP 644#define INIT_STRNCASECMP 645#endif 646 647#if SANITIZER_INTERCEPT_STRSTR || SANITIZER_INTERCEPT_STRCASESTR 648static inline void StrstrCheck(void *ctx, char *r, const char *s1, 649 const char *s2) { 650 uptr len1 = internal_strlen(s1); 651 uptr len2 = internal_strlen(s2); 652 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r ? r - s1 + len2 : len1 + 1); 653 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2 + 1); 654} 655#endif 656 657#if SANITIZER_INTERCEPT_STRSTR 658 659DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, uptr called_pc, 660 const char *s1, const char *s2, char *result) 661 662INTERCEPTOR(char*, strstr, const char *s1, const char *s2) { 663 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 664 return internal_strstr(s1, s2); 665 void *ctx; 666 COMMON_INTERCEPTOR_ENTER(ctx, strstr, s1, s2); 667 char *r = REAL(strstr)(s1, s2); 668 if (common_flags()->intercept_strstr) 669 StrstrCheck(ctx, r, s1, s2); 670 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, GET_CALLER_PC(), s1, 671 s2, r); 672 return r; 673} 674 675#define INIT_STRSTR COMMON_INTERCEPT_FUNCTION(strstr); 676#else 677#define INIT_STRSTR 678#endif 679 680#if SANITIZER_INTERCEPT_STRCASESTR 681 682DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, uptr called_pc, 683 const char *s1, const char *s2, char *result) 684 685INTERCEPTOR(char*, strcasestr, const char *s1, const char *s2) { 686 void *ctx; 687 COMMON_INTERCEPTOR_ENTER(ctx, strcasestr, s1, s2); 688 char *r = REAL(strcasestr)(s1, s2); 689 if (common_flags()->intercept_strstr) 690 StrstrCheck(ctx, r, s1, s2); 691 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, GET_CALLER_PC(), 692 s1, s2, r); 693 return r; 694} 695 696#define INIT_STRCASESTR COMMON_INTERCEPT_FUNCTION(strcasestr); 697#else 698#define INIT_STRCASESTR 699#endif 700 701#if SANITIZER_INTERCEPT_STRTOK 702 703INTERCEPTOR(char*, strtok, char *str, const char *delimiters) { 704 void *ctx; 705 COMMON_INTERCEPTOR_ENTER(ctx, strtok, str, delimiters); 706 if (!common_flags()->intercept_strtok) { 707 return REAL(strtok)(str, delimiters); 708 } 709 if (common_flags()->strict_string_checks) { 710 // If strict_string_checks is enabled, we check the whole first argument 711 // string on the first call (strtok saves this string in a static buffer 712 // for subsequent calls). We do not need to check strtok's result. 713 // As the delimiters can change, we check them every call. 714 if (str != nullptr) { 715 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1); 716 } 717 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 718 internal_strlen(delimiters) + 1); 719 return REAL(strtok)(str, delimiters); 720 } else { 721 // However, when strict_string_checks is disabled we cannot check the 722 // whole string on the first call. Instead, we check the result string 723 // which is guaranteed to be a NULL-terminated substring of the first 724 // argument. We also conservatively check one character of str and the 725 // delimiters. 726 if (str != nullptr) { 727 COMMON_INTERCEPTOR_READ_STRING(ctx, str, 1); 728 } 729 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 1); 730 char *result = REAL(strtok)(str, delimiters); 731 if (result != nullptr) { 732 COMMON_INTERCEPTOR_READ_RANGE(ctx, result, internal_strlen(result) + 1); 733 } else if (str != nullptr) { 734 // No delimiter were found, it's safe to assume that the entire str was 735 // scanned. 736 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1); 737 } 738 return result; 739 } 740} 741 742#define INIT_STRTOK COMMON_INTERCEPT_FUNCTION(strtok) 743#else 744#define INIT_STRTOK 745#endif 746 747#if SANITIZER_INTERCEPT_MEMMEM 748DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, uptr called_pc, 749 const void *s1, SIZE_T len1, const void *s2, 750 SIZE_T len2, void *result) 751 752INTERCEPTOR(void*, memmem, const void *s1, SIZE_T len1, const void *s2, 753 SIZE_T len2) { 754 void *ctx; 755 COMMON_INTERCEPTOR_ENTER(ctx, memmem, s1, len1, s2, len2); 756 void *r = REAL(memmem)(s1, len1, s2, len2); 757 if (common_flags()->intercept_memmem) { 758 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, len1); 759 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2); 760 } 761 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, GET_CALLER_PC(), 762 s1, len1, s2, len2, r); 763 return r; 764} 765 766#define INIT_MEMMEM COMMON_INTERCEPT_FUNCTION(memmem); 767#else 768#define INIT_MEMMEM 769#endif // SANITIZER_INTERCEPT_MEMMEM 770 771#if SANITIZER_INTERCEPT_STRCHR 772INTERCEPTOR(char*, strchr, const char *s, int c) { 773 void *ctx; 774 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 775 return internal_strchr(s, c); 776 COMMON_INTERCEPTOR_ENTER(ctx, strchr, s, c); 777 char *result = REAL(strchr)(s, c); 778 if (common_flags()->intercept_strchr) { 779 // Keep strlen as macro argument, as macro may ignore it. 780 COMMON_INTERCEPTOR_READ_STRING(ctx, s, 781 (result ? result - s : internal_strlen(s)) + 1); 782 } 783 return result; 784} 785#define INIT_STRCHR COMMON_INTERCEPT_FUNCTION(strchr) 786#else 787#define INIT_STRCHR 788#endif 789 790#if SANITIZER_INTERCEPT_STRCHRNUL 791INTERCEPTOR(char*, strchrnul, const char *s, int c) { 792 void *ctx; 793 COMMON_INTERCEPTOR_ENTER(ctx, strchrnul, s, c); 794 char *result = REAL(strchrnul)(s, c); 795 uptr len = result - s + 1; 796 if (common_flags()->intercept_strchr) 797 COMMON_INTERCEPTOR_READ_STRING(ctx, s, len); 798 return result; 799} 800#define INIT_STRCHRNUL COMMON_INTERCEPT_FUNCTION(strchrnul) 801#else 802#define INIT_STRCHRNUL 803#endif 804 805#if SANITIZER_INTERCEPT_STRRCHR 806INTERCEPTOR(char*, strrchr, const char *s, int c) { 807 void *ctx; 808 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 809 return internal_strrchr(s, c); 810 COMMON_INTERCEPTOR_ENTER(ctx, strrchr, s, c); 811 if (common_flags()->intercept_strchr) 812 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); 813 return REAL(strrchr)(s, c); 814} 815#define INIT_STRRCHR COMMON_INTERCEPT_FUNCTION(strrchr) 816#else 817#define INIT_STRRCHR 818#endif 819 820#if SANITIZER_INTERCEPT_STRSPN 821INTERCEPTOR(SIZE_T, strspn, const char *s1, const char *s2) { 822 void *ctx; 823 COMMON_INTERCEPTOR_ENTER(ctx, strspn, s1, s2); 824 SIZE_T r = REAL(strspn)(s1, s2); 825 if (common_flags()->intercept_strspn) { 826 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1); 827 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1); 828 } 829 return r; 830} 831 832INTERCEPTOR(SIZE_T, strcspn, const char *s1, const char *s2) { 833 void *ctx; 834 COMMON_INTERCEPTOR_ENTER(ctx, strcspn, s1, s2); 835 SIZE_T r = REAL(strcspn)(s1, s2); 836 if (common_flags()->intercept_strspn) { 837 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1); 838 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1); 839 } 840 return r; 841} 842 843#define INIT_STRSPN \ 844 COMMON_INTERCEPT_FUNCTION(strspn); \ 845 COMMON_INTERCEPT_FUNCTION(strcspn); 846#else 847#define INIT_STRSPN 848#endif 849 850#if SANITIZER_INTERCEPT_STRPBRK 851INTERCEPTOR(char *, strpbrk, const char *s1, const char *s2) { 852 void *ctx; 853 COMMON_INTERCEPTOR_ENTER(ctx, strpbrk, s1, s2); 854 char *r = REAL(strpbrk)(s1, s2); 855 if (common_flags()->intercept_strpbrk) { 856 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1); 857 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, 858 r ? r - s1 + 1 : internal_strlen(s1) + 1); 859 } 860 return r; 861} 862 863#define INIT_STRPBRK COMMON_INTERCEPT_FUNCTION(strpbrk); 864#else 865#define INIT_STRPBRK 866#endif 867 868#if SANITIZER_INTERCEPT_MEMSET 869INTERCEPTOR(void *, memset, void *dst, int v, uptr size) { 870 void *ctx; 871 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, dst, v, size); 872} 873 874#define INIT_MEMSET COMMON_INTERCEPT_FUNCTION(memset) 875#else 876#define INIT_MEMSET 877#endif 878 879#if SANITIZER_INTERCEPT_MEMMOVE 880INTERCEPTOR(void *, memmove, void *dst, const void *src, uptr size) { 881 void *ctx; 882 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size); 883} 884 885#define INIT_MEMMOVE COMMON_INTERCEPT_FUNCTION(memmove) 886#else 887#define INIT_MEMMOVE 888#endif 889 890#if SANITIZER_INTERCEPT_MEMCPY 891INTERCEPTOR(void *, memcpy, void *dst, const void *src, uptr size) { 892 // On OS X, calling internal_memcpy here will cause memory corruptions, 893 // because memcpy and memmove are actually aliases of the same 894 // implementation. We need to use internal_memmove here. 895 // N.B.: If we switch this to internal_ we'll have to use internal_memmove 896 // due to memcpy being an alias of memmove on OS X. 897 void *ctx; 898#if PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 899 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, dst, src, size); 900#else 901 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size); 902#endif 903} 904 905#define INIT_MEMCPY \ 906 do { \ 907 if (PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE) { \ 908 COMMON_INTERCEPT_FUNCTION(memcpy); \ 909 } else { \ 910 ASSIGN_REAL(memcpy, memmove); \ 911 } \ 912 CHECK(REAL(memcpy)); \ 913 } while (false) 914 915#else 916#define INIT_MEMCPY 917#endif 918 919#if SANITIZER_INTERCEPT_MEMCMP 920DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, uptr called_pc, 921 const void *s1, const void *s2, uptr n, 922 int result) 923 924// Common code for `memcmp` and `bcmp`. 925int MemcmpInterceptorCommon(void *ctx, 926 int (*real_fn)(const void *, const void *, uptr), 927 const void *a1, const void *a2, uptr size) { 928 if (common_flags()->intercept_memcmp) { 929 if (common_flags()->strict_memcmp) { 930 // Check the entire regions even if the first bytes of the buffers are 931 // different. 932 COMMON_INTERCEPTOR_READ_RANGE(ctx, a1, size); 933 COMMON_INTERCEPTOR_READ_RANGE(ctx, a2, size); 934 // Fallthrough to REAL(memcmp) below. 935 } else { 936 unsigned char c1 = 0, c2 = 0; 937 const unsigned char *s1 = (const unsigned char*)a1; 938 const unsigned char *s2 = (const unsigned char*)a2; 939 uptr i; 940 for (i = 0; i < size; i++) { 941 c1 = s1[i]; 942 c2 = s2[i]; 943 if (c1 != c2) break; 944 } 945 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size)); 946 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size)); 947 int r = CharCmpX(c1, c2); 948 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), 949 a1, a2, size, r); 950 return r; 951 } 952 } 953 int result = real_fn(a1, a2, size); 954 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), a1, 955 a2, size, result); 956 return result; 957} 958 959INTERCEPTOR(int, memcmp, const void *a1, const void *a2, uptr size) { 960 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 961 return internal_memcmp(a1, a2, size); 962 void *ctx; 963 COMMON_INTERCEPTOR_ENTER(ctx, memcmp, a1, a2, size); 964 return MemcmpInterceptorCommon(ctx, REAL(memcmp), a1, a2, size); 965} 966 967#define INIT_MEMCMP COMMON_INTERCEPT_FUNCTION(memcmp) 968#else 969#define INIT_MEMCMP 970#endif 971 972#if SANITIZER_INTERCEPT_BCMP 973INTERCEPTOR(int, bcmp, const void *a1, const void *a2, uptr size) { 974 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 975 return internal_memcmp(a1, a2, size); 976 void *ctx; 977 COMMON_INTERCEPTOR_ENTER(ctx, bcmp, a1, a2, size); 978 return MemcmpInterceptorCommon(ctx, REAL(bcmp), a1, a2, size); 979} 980 981#define INIT_BCMP COMMON_INTERCEPT_FUNCTION(bcmp) 982#else 983#define INIT_BCMP 984#endif 985 986#if SANITIZER_INTERCEPT_MEMCHR 987INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) { 988 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 989 return internal_memchr(s, c, n); 990 void *ctx; 991 COMMON_INTERCEPTOR_ENTER(ctx, memchr, s, c, n); 992#if SANITIZER_WINDOWS 993 void *res; 994 if (REAL(memchr)) { 995 res = REAL(memchr)(s, c, n); 996 } else { 997 res = internal_memchr(s, c, n); 998 } 999#else 1000 void *res = REAL(memchr)(s, c, n); 1001#endif 1002 uptr len = res ? (char *)res - (const char *)s + 1 : n; 1003 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, len); 1004 return res; 1005} 1006 1007#define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr) 1008#else 1009#define INIT_MEMCHR 1010#endif 1011 1012#if SANITIZER_INTERCEPT_MEMRCHR 1013INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) { 1014 void *ctx; 1015 COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n); 1016 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n); 1017 return REAL(memrchr)(s, c, n); 1018} 1019 1020#define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr) 1021#else 1022#define INIT_MEMRCHR 1023#endif 1024 1025#if SANITIZER_INTERCEPT_FREXP 1026INTERCEPTOR(double, frexp, double x, int *exp) { 1027 void *ctx; 1028 COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp); 1029 // Assuming frexp() always writes to |exp|. 1030 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); 1031 double res = REAL(frexp)(x, exp); 1032 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp)); 1033 return res; 1034} 1035 1036#define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp); 1037#else 1038#define INIT_FREXP 1039#endif // SANITIZER_INTERCEPT_FREXP 1040 1041#if SANITIZER_INTERCEPT_FREXPF_FREXPL 1042INTERCEPTOR(float, frexpf, float x, int *exp) { 1043 void *ctx; 1044 COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp); 1045 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); 1046 float res = REAL(frexpf)(x, exp); 1047 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp)); 1048 return res; 1049} 1050 1051INTERCEPTOR(long double, frexpl, long double x, int *exp) { 1052 void *ctx; 1053 COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp); 1054 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); 1055 long double res = REAL(frexpl)(x, exp); 1056 COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp)); 1057 return res; 1058} 1059 1060#define INIT_FREXPF_FREXPL \ 1061 COMMON_INTERCEPT_FUNCTION(frexpf); \ 1062 COMMON_INTERCEPT_FUNCTION_LDBL(frexpl) 1063#else 1064#define INIT_FREXPF_FREXPL 1065#endif // SANITIZER_INTERCEPT_FREXPF_FREXPL 1066 1067#if SI_POSIX 1068static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec, 1069 SIZE_T iovlen, SIZE_T maxlen) { 1070 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) { 1071 SSIZE_T sz = Min(iovec[i].iov_len, maxlen); 1072 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz); 1073 maxlen -= sz; 1074 } 1075} 1076 1077static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec, 1078 SIZE_T iovlen, SIZE_T maxlen) { 1079 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen); 1080 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) { 1081 SSIZE_T sz = Min(iovec[i].iov_len, maxlen); 1082 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz); 1083 maxlen -= sz; 1084 } 1085} 1086#endif 1087 1088#if SANITIZER_INTERCEPT_READ 1089INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) { 1090 void *ctx; 1091 COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count); 1092 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1093 // FIXME: under ASan the call below may write to freed memory and corrupt 1094 // its metadata. See 1095 // https://github.com/google/sanitizers/issues/321. 1096 SSIZE_T res = REAL(read)(fd, ptr, count); 1097 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); 1098 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1099 return res; 1100} 1101#define INIT_READ COMMON_INTERCEPT_FUNCTION(read) 1102#else 1103#define INIT_READ 1104#endif 1105 1106#if SANITIZER_INTERCEPT_FREAD 1107INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) { 1108 // libc file streams can call user-supplied functions, see fopencookie. 1109 void *ctx; 1110 COMMON_INTERCEPTOR_ENTER(ctx, fread, ptr, size, nmemb, file); 1111 // FIXME: under ASan the call below may write to freed memory and corrupt 1112 // its metadata. See 1113 // https://github.com/google/sanitizers/issues/321. 1114 SIZE_T res = REAL(fread)(ptr, size, nmemb, file); 1115 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res * size); 1116 return res; 1117} 1118#define INIT_FREAD COMMON_INTERCEPT_FUNCTION(fread) 1119#else 1120#define INIT_FREAD 1121#endif 1122 1123#if SANITIZER_INTERCEPT_PREAD 1124INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) { 1125 void *ctx; 1126 COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset); 1127 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1128 // FIXME: under ASan the call below may write to freed memory and corrupt 1129 // its metadata. See 1130 // https://github.com/google/sanitizers/issues/321. 1131 SSIZE_T res = REAL(pread)(fd, ptr, count, offset); 1132 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); 1133 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1134 return res; 1135} 1136#define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread) 1137#else 1138#define INIT_PREAD 1139#endif 1140 1141#if SANITIZER_INTERCEPT_PREAD64 1142INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) { 1143 void *ctx; 1144 COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset); 1145 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1146 // FIXME: under ASan the call below may write to freed memory and corrupt 1147 // its metadata. See 1148 // https://github.com/google/sanitizers/issues/321. 1149 SSIZE_T res = REAL(pread64)(fd, ptr, count, offset); 1150 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); 1151 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1152 return res; 1153} 1154#define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64) 1155#else 1156#define INIT_PREAD64 1157#endif 1158 1159#if SANITIZER_INTERCEPT_READV 1160INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov, 1161 int iovcnt) { 1162 void *ctx; 1163 COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt); 1164 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1165 SSIZE_T res = REAL(readv)(fd, iov, iovcnt); 1166 if (res > 0) write_iovec(ctx, iov, iovcnt, res); 1167 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1168 return res; 1169} 1170#define INIT_READV COMMON_INTERCEPT_FUNCTION(readv) 1171#else 1172#define INIT_READV 1173#endif 1174 1175#if SANITIZER_INTERCEPT_PREADV 1176INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt, 1177 OFF_T offset) { 1178 void *ctx; 1179 COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset); 1180 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1181 SSIZE_T res = REAL(preadv)(fd, iov, iovcnt, offset); 1182 if (res > 0) write_iovec(ctx, iov, iovcnt, res); 1183 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1184 return res; 1185} 1186#define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv) 1187#else 1188#define INIT_PREADV 1189#endif 1190 1191#if SANITIZER_INTERCEPT_PREADV64 1192INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt, 1193 OFF64_T offset) { 1194 void *ctx; 1195 COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset); 1196 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1197 SSIZE_T res = REAL(preadv64)(fd, iov, iovcnt, offset); 1198 if (res > 0) write_iovec(ctx, iov, iovcnt, res); 1199 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1200 return res; 1201} 1202#define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64) 1203#else 1204#define INIT_PREADV64 1205#endif 1206 1207#if SANITIZER_INTERCEPT_WRITE 1208INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) { 1209 void *ctx; 1210 COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count); 1211 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1212 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1213 SSIZE_T res = REAL(write)(fd, ptr, count); 1214 // FIXME: this check should be _before_ the call to REAL(write), not after 1215 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); 1216 return res; 1217} 1218#define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write) 1219#else 1220#define INIT_WRITE 1221#endif 1222 1223#if SANITIZER_INTERCEPT_FWRITE 1224INTERCEPTOR(SIZE_T, fwrite, const void *p, uptr size, uptr nmemb, void *file) { 1225 // libc file streams can call user-supplied functions, see fopencookie. 1226 void *ctx; 1227 COMMON_INTERCEPTOR_ENTER(ctx, fwrite, p, size, nmemb, file); 1228 SIZE_T res = REAL(fwrite)(p, size, nmemb, file); 1229 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, p, res * size); 1230 return res; 1231} 1232#define INIT_FWRITE COMMON_INTERCEPT_FUNCTION(fwrite) 1233#else 1234#define INIT_FWRITE 1235#endif 1236 1237#if SANITIZER_INTERCEPT_PWRITE 1238INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) { 1239 void *ctx; 1240 COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset); 1241 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1242 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1243 SSIZE_T res = REAL(pwrite)(fd, ptr, count, offset); 1244 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); 1245 return res; 1246} 1247#define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite) 1248#else 1249#define INIT_PWRITE 1250#endif 1251 1252#if SANITIZER_INTERCEPT_PWRITE64 1253INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count, 1254 OFF64_T offset) { 1255 void *ctx; 1256 COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset); 1257 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1258 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1259 SSIZE_T res = REAL(pwrite64)(fd, ptr, count, offset); 1260 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); 1261 return res; 1262} 1263#define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64) 1264#else 1265#define INIT_PWRITE64 1266#endif 1267 1268#if SANITIZER_INTERCEPT_WRITEV 1269INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov, 1270 int iovcnt) { 1271 void *ctx; 1272 COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt); 1273 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1274 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1275 SSIZE_T res = REAL(writev)(fd, iov, iovcnt); 1276 if (res > 0) read_iovec(ctx, iov, iovcnt, res); 1277 return res; 1278} 1279#define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev) 1280#else 1281#define INIT_WRITEV 1282#endif 1283 1284#if SANITIZER_INTERCEPT_PWRITEV 1285INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt, 1286 OFF_T offset) { 1287 void *ctx; 1288 COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset); 1289 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1290 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1291 SSIZE_T res = REAL(pwritev)(fd, iov, iovcnt, offset); 1292 if (res > 0) read_iovec(ctx, iov, iovcnt, res); 1293 return res; 1294} 1295#define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev) 1296#else 1297#define INIT_PWRITEV 1298#endif 1299 1300#if SANITIZER_INTERCEPT_PWRITEV64 1301INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt, 1302 OFF64_T offset) { 1303 void *ctx; 1304 COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset); 1305 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1306 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1307 SSIZE_T res = REAL(pwritev64)(fd, iov, iovcnt, offset); 1308 if (res > 0) read_iovec(ctx, iov, iovcnt, res); 1309 return res; 1310} 1311#define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64) 1312#else 1313#define INIT_PWRITEV64 1314#endif 1315 1316#if SANITIZER_INTERCEPT_FGETS 1317INTERCEPTOR(char *, fgets, char *s, SIZE_T size, void *file) { 1318 // libc file streams can call user-supplied functions, see fopencookie. 1319 void *ctx; 1320 COMMON_INTERCEPTOR_ENTER(ctx, fgets, s, size, file); 1321 // FIXME: under ASan the call below may write to freed memory and corrupt 1322 // its metadata. See 1323 // https://github.com/google/sanitizers/issues/321. 1324 char *res = REAL(fgets)(s, size, file); 1325 if (res) 1326 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1); 1327 return res; 1328} 1329#define INIT_FGETS COMMON_INTERCEPT_FUNCTION(fgets) 1330#else 1331#define INIT_FGETS 1332#endif 1333 1334#if SANITIZER_INTERCEPT_FPUTS 1335INTERCEPTOR_WITH_SUFFIX(int, fputs, char *s, void *file) { 1336 // libc file streams can call user-supplied functions, see fopencookie. 1337 void *ctx; 1338 COMMON_INTERCEPTOR_ENTER(ctx, fputs, s, file); 1339 if (!SANITIZER_APPLE || s) { // `fputs(NULL, file)` is supported on Darwin. 1340 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); 1341 } 1342 return REAL(fputs)(s, file); 1343} 1344#define INIT_FPUTS COMMON_INTERCEPT_FUNCTION(fputs) 1345#else 1346#define INIT_FPUTS 1347#endif 1348 1349#if SANITIZER_INTERCEPT_PUTS 1350INTERCEPTOR(int, puts, char *s) { 1351 // libc file streams can call user-supplied functions, see fopencookie. 1352 void *ctx; 1353 COMMON_INTERCEPTOR_ENTER(ctx, puts, s); 1354 if (!SANITIZER_APPLE || s) { // `puts(NULL)` is supported on Darwin. 1355 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); 1356 } 1357 return REAL(puts)(s); 1358} 1359#define INIT_PUTS COMMON_INTERCEPT_FUNCTION(puts) 1360#else 1361#define INIT_PUTS 1362#endif 1363 1364#if SANITIZER_INTERCEPT_PRCTL 1365INTERCEPTOR(int, prctl, int option, unsigned long arg2, unsigned long arg3, 1366 unsigned long arg4, unsigned long arg5) { 1367 void *ctx; 1368 COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5); 1369 static const int PR_SET_NAME = 15; 1370 static const int PR_SET_VMA = 0x53564d41; 1371 static const int PR_SCHED_CORE = 62; 1372 static const int PR_SCHED_CORE_GET = 0; 1373 if (option == PR_SET_VMA && arg2 == 0UL) { 1374 char *name = (char *)arg5; 1375 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 1376 } 1377 int res = REAL(prctl(option, arg2, arg3, arg4, arg5)); 1378 if (option == PR_SET_NAME) { 1379 char buff[16]; 1380 internal_strncpy(buff, (char *)arg2, 15); 1381 buff[15] = 0; 1382 COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff); 1383 } else if (res != -1 && option == PR_SCHED_CORE && arg2 == PR_SCHED_CORE_GET) { 1384 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64*)(arg5), sizeof(u64)); 1385 } 1386 return res; 1387} 1388#define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl) 1389#else 1390#define INIT_PRCTL 1391#endif // SANITIZER_INTERCEPT_PRCTL 1392 1393#if SANITIZER_INTERCEPT_TIME 1394INTERCEPTOR(unsigned long, time, unsigned long *t) { 1395 void *ctx; 1396 COMMON_INTERCEPTOR_ENTER(ctx, time, t); 1397 unsigned long local_t; 1398 unsigned long res = REAL(time)(&local_t); 1399 if (t && res != (unsigned long)-1) { 1400 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t)); 1401 *t = local_t; 1402 } 1403 return res; 1404} 1405#define INIT_TIME COMMON_INTERCEPT_FUNCTION(time); 1406#else 1407#define INIT_TIME 1408#endif // SANITIZER_INTERCEPT_TIME 1409 1410#if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS 1411static void unpoison_tm(void *ctx, __sanitizer_tm *tm) { 1412 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm)); 1413#if !SANITIZER_SOLARIS 1414 if (tm->tm_zone) { 1415 // Can not use COMMON_INTERCEPTOR_WRITE_RANGE here, because tm->tm_zone 1416 // can point to shared memory and tsan would report a data race. 1417 COMMON_INTERCEPTOR_INITIALIZE_RANGE(tm->tm_zone, 1418 internal_strlen(tm->tm_zone) + 1); 1419 } 1420#endif 1421} 1422INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) { 1423 void *ctx; 1424 COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep); 1425 __sanitizer_tm *res = REAL(localtime)(timep); 1426 if (res) { 1427 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1428 unpoison_tm(ctx, res); 1429 } 1430 return res; 1431} 1432INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) { 1433 void *ctx; 1434 COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result); 1435 __sanitizer_tm *res = REAL(localtime_r)(timep, result); 1436 if (res) { 1437 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1438 unpoison_tm(ctx, res); 1439 } 1440 return res; 1441} 1442INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) { 1443 void *ctx; 1444 COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep); 1445 __sanitizer_tm *res = REAL(gmtime)(timep); 1446 if (res) { 1447 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1448 unpoison_tm(ctx, res); 1449 } 1450 return res; 1451} 1452INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) { 1453 void *ctx; 1454 COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result); 1455 __sanitizer_tm *res = REAL(gmtime_r)(timep, result); 1456 if (res) { 1457 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1458 unpoison_tm(ctx, res); 1459 } 1460 return res; 1461} 1462INTERCEPTOR(char *, ctime, unsigned long *timep) { 1463 void *ctx; 1464 COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep); 1465 // FIXME: under ASan the call below may write to freed memory and corrupt 1466 // its metadata. See 1467 // https://github.com/google/sanitizers/issues/321. 1468 char *res = REAL(ctime)(timep); 1469 if (res) { 1470 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1471 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 1472 } 1473 return res; 1474} 1475INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) { 1476 void *ctx; 1477 COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result); 1478 // FIXME: under ASan the call below may write to freed memory and corrupt 1479 // its metadata. See 1480 // https://github.com/google/sanitizers/issues/321. 1481 char *res = REAL(ctime_r)(timep, result); 1482 if (res) { 1483 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1484 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 1485 } 1486 return res; 1487} 1488INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) { 1489 void *ctx; 1490 COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm); 1491 // FIXME: under ASan the call below may write to freed memory and corrupt 1492 // its metadata. See 1493 // https://github.com/google/sanitizers/issues/321. 1494 char *res = REAL(asctime)(tm); 1495 if (res) { 1496 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm)); 1497 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 1498 } 1499 return res; 1500} 1501INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) { 1502 void *ctx; 1503 COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result); 1504 // FIXME: under ASan the call below may write to freed memory and corrupt 1505 // its metadata. See 1506 // https://github.com/google/sanitizers/issues/321. 1507 char *res = REAL(asctime_r)(tm, result); 1508 if (res) { 1509 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm)); 1510 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 1511 } 1512 return res; 1513} 1514INTERCEPTOR(long, mktime, __sanitizer_tm *tm) { 1515 void *ctx; 1516 COMMON_INTERCEPTOR_ENTER(ctx, mktime, tm); 1517 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_sec, sizeof(tm->tm_sec)); 1518 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_min, sizeof(tm->tm_min)); 1519 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_hour, sizeof(tm->tm_hour)); 1520 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mday, sizeof(tm->tm_mday)); 1521 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mon, sizeof(tm->tm_mon)); 1522 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_year, sizeof(tm->tm_year)); 1523 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_isdst, sizeof(tm->tm_isdst)); 1524 long res = REAL(mktime)(tm); 1525 if (res != -1) unpoison_tm(ctx, tm); 1526 return res; 1527} 1528#define INIT_LOCALTIME_AND_FRIENDS \ 1529 COMMON_INTERCEPT_FUNCTION(localtime); \ 1530 COMMON_INTERCEPT_FUNCTION(localtime_r); \ 1531 COMMON_INTERCEPT_FUNCTION(gmtime); \ 1532 COMMON_INTERCEPT_FUNCTION(gmtime_r); \ 1533 COMMON_INTERCEPT_FUNCTION(ctime); \ 1534 COMMON_INTERCEPT_FUNCTION(ctime_r); \ 1535 COMMON_INTERCEPT_FUNCTION(asctime); \ 1536 COMMON_INTERCEPT_FUNCTION(asctime_r); \ 1537 COMMON_INTERCEPT_FUNCTION(mktime); 1538#else 1539#define INIT_LOCALTIME_AND_FRIENDS 1540#endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS 1541 1542#if SANITIZER_INTERCEPT_STRPTIME 1543INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) { 1544 void *ctx; 1545 COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm); 1546 if (format) 1547 COMMON_INTERCEPTOR_READ_RANGE(ctx, format, internal_strlen(format) + 1); 1548 // FIXME: under ASan the call below may write to freed memory and corrupt 1549 // its metadata. See 1550 // https://github.com/google/sanitizers/issues/321. 1551 char *res = REAL(strptime)(s, format, tm); 1552 COMMON_INTERCEPTOR_READ_STRING(ctx, s, res ? res - s : 0); 1553 if (res && tm) { 1554 // Do not call unpoison_tm here, because strptime does not, in fact, 1555 // initialize the entire struct tm. For example, tm_zone pointer is left 1556 // uninitialized. 1557 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm)); 1558 } 1559 return res; 1560} 1561#define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime); 1562#else 1563#define INIT_STRPTIME 1564#endif 1565 1566#if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF 1567#include "sanitizer_common_interceptors_format.inc" 1568 1569#define FORMAT_INTERCEPTOR_IMPL(name, vname, ...) \ 1570 { \ 1571 void *ctx; \ 1572 va_list ap; \ 1573 va_start(ap, format); \ 1574 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \ 1575 int res = WRAP(vname)(__VA_ARGS__, ap); \ 1576 va_end(ap); \ 1577 return res; \ 1578 } 1579 1580#endif 1581 1582#if SANITIZER_INTERCEPT_SCANF 1583 1584#define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \ 1585 { \ 1586 void *ctx; \ 1587 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \ 1588 va_list aq; \ 1589 va_copy(aq, ap); \ 1590 int res = REAL(vname)(__VA_ARGS__); \ 1591 if (res > 0) \ 1592 scanf_common(ctx, res, allowGnuMalloc, format, aq); \ 1593 va_end(aq); \ 1594 return res; \ 1595 } 1596 1597INTERCEPTOR(int, vscanf, const char *format, va_list ap) 1598VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap) 1599 1600INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap) 1601VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap) 1602 1603INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap) 1604VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap) 1605 1606#if SANITIZER_INTERCEPT_ISOC99_SCANF 1607INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap) 1608VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap) 1609 1610INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format, 1611 va_list ap) 1612VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap) 1613 1614INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap) 1615VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap) 1616#endif // SANITIZER_INTERCEPT_ISOC99_SCANF 1617 1618INTERCEPTOR(int, scanf, const char *format, ...) 1619FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format) 1620 1621INTERCEPTOR(int, fscanf, void *stream, const char *format, ...) 1622FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format) 1623 1624INTERCEPTOR(int, sscanf, const char *str, const char *format, ...) 1625FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format) 1626 1627#if SANITIZER_INTERCEPT_ISOC99_SCANF 1628INTERCEPTOR(int, __isoc99_scanf, const char *format, ...) 1629FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format) 1630 1631INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...) 1632FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format) 1633 1634INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...) 1635FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format) 1636#endif 1637 1638#endif 1639 1640#if SANITIZER_INTERCEPT_SCANF 1641#define INIT_SCANF \ 1642 COMMON_INTERCEPT_FUNCTION_LDBL(scanf); \ 1643 COMMON_INTERCEPT_FUNCTION_LDBL(sscanf); \ 1644 COMMON_INTERCEPT_FUNCTION_LDBL(fscanf); \ 1645 COMMON_INTERCEPT_FUNCTION_LDBL(vscanf); \ 1646 COMMON_INTERCEPT_FUNCTION_LDBL(vsscanf); \ 1647 COMMON_INTERCEPT_FUNCTION_LDBL(vfscanf); 1648#else 1649#define INIT_SCANF 1650#endif 1651 1652#if SANITIZER_INTERCEPT_ISOC99_SCANF 1653#define INIT_ISOC99_SCANF \ 1654 COMMON_INTERCEPT_FUNCTION(__isoc99_scanf); \ 1655 COMMON_INTERCEPT_FUNCTION(__isoc99_sscanf); \ 1656 COMMON_INTERCEPT_FUNCTION(__isoc99_fscanf); \ 1657 COMMON_INTERCEPT_FUNCTION(__isoc99_vscanf); \ 1658 COMMON_INTERCEPT_FUNCTION(__isoc99_vsscanf); \ 1659 COMMON_INTERCEPT_FUNCTION(__isoc99_vfscanf); 1660#else 1661#define INIT_ISOC99_SCANF 1662#endif 1663 1664#if SANITIZER_INTERCEPT_PRINTF 1665 1666#define VPRINTF_INTERCEPTOR_ENTER(vname, ...) \ 1667 void *ctx; \ 1668 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \ 1669 va_list aq; \ 1670 va_copy(aq, ap); 1671 1672#define VPRINTF_INTERCEPTOR_RETURN() \ 1673 va_end(aq); 1674 1675#define VPRINTF_INTERCEPTOR_IMPL(vname, ...) \ 1676 { \ 1677 VPRINTF_INTERCEPTOR_ENTER(vname, __VA_ARGS__); \ 1678 if (common_flags()->check_printf) \ 1679 printf_common(ctx, format, aq); \ 1680 int res = REAL(vname)(__VA_ARGS__); \ 1681 VPRINTF_INTERCEPTOR_RETURN(); \ 1682 return res; \ 1683 } 1684 1685// FIXME: under ASan the REAL() call below may write to freed memory and 1686// corrupt its metadata. See 1687// https://github.com/google/sanitizers/issues/321. 1688#define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...) \ 1689 { \ 1690 VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__) \ 1691 if (common_flags()->check_printf) { \ 1692 printf_common(ctx, format, aq); \ 1693 } \ 1694 int res = REAL(vname)(str, __VA_ARGS__); \ 1695 if (res >= 0) { \ 1696 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1); \ 1697 } \ 1698 VPRINTF_INTERCEPTOR_RETURN(); \ 1699 return res; \ 1700 } 1701 1702// FIXME: under ASan the REAL() call below may write to freed memory and 1703// corrupt its metadata. See 1704// https://github.com/google/sanitizers/issues/321. 1705#define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...) \ 1706 { \ 1707 VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__) \ 1708 if (common_flags()->check_printf) { \ 1709 printf_common(ctx, format, aq); \ 1710 } \ 1711 int res = REAL(vname)(str, size, __VA_ARGS__); \ 1712 if (res >= 0) { \ 1713 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1))); \ 1714 } \ 1715 VPRINTF_INTERCEPTOR_RETURN(); \ 1716 return res; \ 1717 } 1718 1719// FIXME: under ASan the REAL() call below may write to freed memory and 1720// corrupt its metadata. See 1721// https://github.com/google/sanitizers/issues/321. 1722#define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...) \ 1723 { \ 1724 VPRINTF_INTERCEPTOR_ENTER(vname, strp, __VA_ARGS__) \ 1725 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, strp, sizeof(char *)); \ 1726 if (common_flags()->check_printf) { \ 1727 printf_common(ctx, format, aq); \ 1728 } \ 1729 int res = REAL(vname)(strp, __VA_ARGS__); \ 1730 if (res >= 0) { \ 1731 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1); \ 1732 } \ 1733 VPRINTF_INTERCEPTOR_RETURN(); \ 1734 return res; \ 1735 } 1736 1737INTERCEPTOR(int, vprintf, const char *format, va_list ap) 1738VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap) 1739 1740INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format, 1741 va_list ap) 1742VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap) 1743 1744INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format, 1745 va_list ap) 1746VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap) 1747 1748#if SANITIZER_INTERCEPT___PRINTF_CHK 1749INTERCEPTOR(int, __vsnprintf_chk, char *str, SIZE_T size, int flag, 1750 SIZE_T size_to, const char *format, va_list ap) 1751VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap) 1752#endif 1753 1754#if SANITIZER_INTERCEPT_PRINTF_L 1755INTERCEPTOR(int, vsnprintf_l, char *str, SIZE_T size, void *loc, 1756 const char *format, va_list ap) 1757VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf_l, str, size, loc, format, ap) 1758 1759INTERCEPTOR(int, snprintf_l, char *str, SIZE_T size, void *loc, 1760 const char *format, ...) 1761FORMAT_INTERCEPTOR_IMPL(snprintf_l, vsnprintf_l, str, size, loc, format) 1762#endif // SANITIZER_INTERCEPT_PRINTF_L 1763 1764INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap) 1765VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap) 1766 1767#if SANITIZER_INTERCEPT___PRINTF_CHK 1768INTERCEPTOR(int, __vsprintf_chk, char *str, int flag, SIZE_T size_to, 1769 const char *format, va_list ap) 1770VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap) 1771#endif 1772 1773INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap) 1774VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap) 1775 1776#if SANITIZER_INTERCEPT_ISOC99_PRINTF 1777INTERCEPTOR(int, __isoc99_vprintf, const char *format, va_list ap) 1778VPRINTF_INTERCEPTOR_IMPL(__isoc99_vprintf, format, ap) 1779 1780INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream, 1781 const char *format, va_list ap) 1782VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap) 1783 1784INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format, 1785 va_list ap) 1786VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap) 1787 1788INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format, 1789 va_list ap) 1790VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format, 1791 ap) 1792 1793#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF 1794 1795INTERCEPTOR(int, printf, const char *format, ...) 1796FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format) 1797 1798INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...) 1799FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format) 1800 1801#if SANITIZER_INTERCEPT___PRINTF_CHK 1802INTERCEPTOR(int, __fprintf_chk, __sanitizer_FILE *stream, SIZE_T size, 1803 const char *format, ...) 1804FORMAT_INTERCEPTOR_IMPL(__fprintf_chk, vfprintf, stream, format) 1805#endif 1806 1807INTERCEPTOR(int, sprintf, char *str, const char *format, ...) 1808FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format) 1809 1810#if SANITIZER_INTERCEPT___PRINTF_CHK 1811INTERCEPTOR(int, __sprintf_chk, char *str, int flag, SIZE_T size_to, 1812 const char *format, ...) 1813FORMAT_INTERCEPTOR_IMPL(__sprintf_chk, vsprintf, str, format) 1814#endif 1815 1816INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...) 1817FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format) 1818 1819#if SANITIZER_INTERCEPT___PRINTF_CHK 1820INTERCEPTOR(int, __snprintf_chk, char *str, SIZE_T size, int flag, 1821 SIZE_T size_to, const char *format, ...) 1822FORMAT_INTERCEPTOR_IMPL(__snprintf_chk, vsnprintf, str, size, format) 1823#endif 1824 1825INTERCEPTOR(int, asprintf, char **strp, const char *format, ...) 1826FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format) 1827 1828#if SANITIZER_INTERCEPT_ISOC99_PRINTF 1829INTERCEPTOR(int, __isoc99_printf, const char *format, ...) 1830FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format) 1831 1832INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format, 1833 ...) 1834FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format) 1835 1836INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...) 1837FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format) 1838 1839INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size, 1840 const char *format, ...) 1841FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size, 1842 format) 1843 1844#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF 1845 1846#endif // SANITIZER_INTERCEPT_PRINTF 1847 1848#if SANITIZER_INTERCEPT_PRINTF 1849#define INIT_PRINTF \ 1850 COMMON_INTERCEPT_FUNCTION_LDBL(printf); \ 1851 COMMON_INTERCEPT_FUNCTION_LDBL(sprintf); \ 1852 COMMON_INTERCEPT_FUNCTION_LDBL(snprintf); \ 1853 COMMON_INTERCEPT_FUNCTION_LDBL(asprintf); \ 1854 COMMON_INTERCEPT_FUNCTION_LDBL(fprintf); \ 1855 COMMON_INTERCEPT_FUNCTION_LDBL(vprintf); \ 1856 COMMON_INTERCEPT_FUNCTION_LDBL(vsprintf); \ 1857 COMMON_INTERCEPT_FUNCTION_LDBL(vsnprintf); \ 1858 COMMON_INTERCEPT_FUNCTION_LDBL(vasprintf); \ 1859 COMMON_INTERCEPT_FUNCTION_LDBL(vfprintf); 1860#else 1861#define INIT_PRINTF 1862#endif 1863 1864#if SANITIZER_INTERCEPT___PRINTF_CHK 1865#define INIT___PRINTF_CHK \ 1866 COMMON_INTERCEPT_FUNCTION(__sprintf_chk); \ 1867 COMMON_INTERCEPT_FUNCTION(__snprintf_chk); \ 1868 COMMON_INTERCEPT_FUNCTION(__vsprintf_chk); \ 1869 COMMON_INTERCEPT_FUNCTION(__vsnprintf_chk); \ 1870 COMMON_INTERCEPT_FUNCTION(__fprintf_chk); 1871#else 1872#define INIT___PRINTF_CHK 1873#endif 1874 1875#if SANITIZER_INTERCEPT_PRINTF_L 1876#define INIT_PRINTF_L \ 1877 COMMON_INTERCEPT_FUNCTION(snprintf_l); \ 1878 COMMON_INTERCEPT_FUNCTION(vsnprintf_l); 1879#else 1880#define INIT_PRINTF_L 1881#endif 1882 1883#if SANITIZER_INTERCEPT_ISOC99_PRINTF 1884#define INIT_ISOC99_PRINTF \ 1885 COMMON_INTERCEPT_FUNCTION(__isoc99_printf); \ 1886 COMMON_INTERCEPT_FUNCTION(__isoc99_sprintf); \ 1887 COMMON_INTERCEPT_FUNCTION(__isoc99_snprintf); \ 1888 COMMON_INTERCEPT_FUNCTION(__isoc99_fprintf); \ 1889 COMMON_INTERCEPT_FUNCTION(__isoc99_vprintf); \ 1890 COMMON_INTERCEPT_FUNCTION(__isoc99_vsprintf); \ 1891 COMMON_INTERCEPT_FUNCTION(__isoc99_vsnprintf); \ 1892 COMMON_INTERCEPT_FUNCTION(__isoc99_vfprintf); 1893#else 1894#define INIT_ISOC99_PRINTF 1895#endif 1896 1897#if SANITIZER_INTERCEPT_IOCTL 1898#include "sanitizer_common_interceptors_ioctl.inc" 1899#include "sanitizer_interceptors_ioctl_netbsd.inc" 1900INTERCEPTOR(int, ioctl, int d, unsigned long request, ...) { 1901 // We need a frame pointer, because we call into ioctl_common_[pre|post] which 1902 // can trigger a report and we need to be able to unwind through this 1903 // function. On Mac in debug mode we might not have a frame pointer, because 1904 // ioctl_common_[pre|post] doesn't get inlined here. 1905 ENABLE_FRAME_POINTER; 1906 1907 void *ctx; 1908 va_list ap; 1909 va_start(ap, request); 1910 void *arg = va_arg(ap, void *); 1911 va_end(ap); 1912 COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg); 1913 1914 CHECK(ioctl_initialized); 1915 1916 // Note: TSan does not use common flags, and they are zero-initialized. 1917 // This effectively disables ioctl handling in TSan. 1918 if (!common_flags()->handle_ioctl) return REAL(ioctl)(d, request, arg); 1919 1920 // Although request is unsigned long, the rest of the interceptor uses it 1921 // as just "unsigned" to save space, because we know that all values fit in 1922 // "unsigned" - they are compile-time constants. 1923 1924 const ioctl_desc *desc = ioctl_lookup(request); 1925 ioctl_desc decoded_desc; 1926 if (!desc) { 1927 VPrintf(2, "Decoding unknown ioctl 0x%lx\n", request); 1928 if (!ioctl_decode(request, &decoded_desc)) 1929 Printf("WARNING: failed decoding unknown ioctl 0x%lx\n", request); 1930 else 1931 desc = &decoded_desc; 1932 } 1933 1934 if (desc) ioctl_common_pre(ctx, desc, d, request, arg); 1935 int res = REAL(ioctl)(d, request, arg); 1936 // FIXME: some ioctls have different return values for success and failure. 1937 if (desc && res != -1) ioctl_common_post(ctx, desc, res, d, request, arg); 1938 return res; 1939} 1940#define INIT_IOCTL \ 1941 ioctl_init(); \ 1942 COMMON_INTERCEPT_FUNCTION(ioctl); 1943#else 1944#define INIT_IOCTL 1945#endif 1946 1947#if SANITIZER_POSIX 1948UNUSED static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) { 1949 if (pwd) { 1950 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd)); 1951 if (pwd->pw_name) 1952 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_name, 1953 internal_strlen(pwd->pw_name) + 1); 1954 if (pwd->pw_passwd) 1955 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_passwd, 1956 internal_strlen(pwd->pw_passwd) + 1); 1957#if !SANITIZER_ANDROID 1958 if (pwd->pw_gecos) 1959 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_gecos, 1960 internal_strlen(pwd->pw_gecos) + 1); 1961#endif 1962#if SANITIZER_APPLE || SANITIZER_FREEBSD || SANITIZER_NETBSD 1963 if (pwd->pw_class) 1964 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_class, 1965 internal_strlen(pwd->pw_class) + 1); 1966#endif 1967 if (pwd->pw_dir) 1968 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_dir, 1969 internal_strlen(pwd->pw_dir) + 1); 1970 if (pwd->pw_shell) 1971 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_shell, 1972 internal_strlen(pwd->pw_shell) + 1); 1973 } 1974} 1975 1976UNUSED static void unpoison_group(void *ctx, __sanitizer_group *grp) { 1977 if (grp) { 1978 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp)); 1979 if (grp->gr_name) 1980 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_name, 1981 internal_strlen(grp->gr_name) + 1); 1982 if (grp->gr_passwd) 1983 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_passwd, 1984 internal_strlen(grp->gr_passwd) + 1); 1985 char **p = grp->gr_mem; 1986 for (; *p; ++p) { 1987 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1); 1988 } 1989 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_mem, 1990 (p - grp->gr_mem + 1) * sizeof(*p)); 1991 } 1992} 1993#endif // SANITIZER_POSIX 1994 1995#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS 1996INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) { 1997 void *ctx; 1998 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name); 1999 if (name) 2000 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 2001 __sanitizer_passwd *res = REAL(getpwnam)(name); 2002 unpoison_passwd(ctx, res); 2003 return res; 2004} 2005INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) { 2006 void *ctx; 2007 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid); 2008 __sanitizer_passwd *res = REAL(getpwuid)(uid); 2009 unpoison_passwd(ctx, res); 2010 return res; 2011} 2012INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) { 2013 void *ctx; 2014 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name); 2015 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 2016 __sanitizer_group *res = REAL(getgrnam)(name); 2017 unpoison_group(ctx, res); 2018 return res; 2019} 2020INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) { 2021 void *ctx; 2022 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid); 2023 __sanitizer_group *res = REAL(getgrgid)(gid); 2024 unpoison_group(ctx, res); 2025 return res; 2026} 2027#define INIT_GETPWNAM_AND_FRIENDS \ 2028 COMMON_INTERCEPT_FUNCTION(getpwnam); \ 2029 COMMON_INTERCEPT_FUNCTION(getpwuid); \ 2030 COMMON_INTERCEPT_FUNCTION(getgrnam); \ 2031 COMMON_INTERCEPT_FUNCTION(getgrgid); 2032#else 2033#define INIT_GETPWNAM_AND_FRIENDS 2034#endif 2035 2036#if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS 2037INTERCEPTOR(int, getpwnam_r, const char *name, __sanitizer_passwd *pwd, 2038 char *buf, SIZE_T buflen, __sanitizer_passwd **result) { 2039 void *ctx; 2040 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result); 2041 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 2042 // FIXME: under ASan the call below may write to freed memory and corrupt 2043 // its metadata. See 2044 // https://github.com/google/sanitizers/issues/321. 2045 int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result); 2046 if (!res && result) 2047 unpoison_passwd(ctx, *result); 2048 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2049 return res; 2050} 2051INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf, 2052 SIZE_T buflen, __sanitizer_passwd **result) { 2053 void *ctx; 2054 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result); 2055 // FIXME: under ASan the call below may write to freed memory and corrupt 2056 // its metadata. See 2057 // https://github.com/google/sanitizers/issues/321. 2058 int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result); 2059 if (!res && result) 2060 unpoison_passwd(ctx, *result); 2061 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2062 return res; 2063} 2064INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp, 2065 char *buf, SIZE_T buflen, __sanitizer_group **result) { 2066 void *ctx; 2067 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result); 2068 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 2069 // FIXME: under ASan the call below may write to freed memory and corrupt 2070 // its metadata. See 2071 // https://github.com/google/sanitizers/issues/321. 2072 int res = REAL(getgrnam_r)(name, grp, buf, buflen, result); 2073 if (!res && result) 2074 unpoison_group(ctx, *result); 2075 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2076 return res; 2077} 2078INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf, 2079 SIZE_T buflen, __sanitizer_group **result) { 2080 void *ctx; 2081 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result); 2082 // FIXME: under ASan the call below may write to freed memory and corrupt 2083 // its metadata. See 2084 // https://github.com/google/sanitizers/issues/321. 2085 int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result); 2086 if (!res && result) 2087 unpoison_group(ctx, *result); 2088 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2089 return res; 2090} 2091#define INIT_GETPWNAM_R_AND_FRIENDS \ 2092 COMMON_INTERCEPT_FUNCTION(getpwnam_r); \ 2093 COMMON_INTERCEPT_FUNCTION(getpwuid_r); \ 2094 COMMON_INTERCEPT_FUNCTION(getgrnam_r); \ 2095 COMMON_INTERCEPT_FUNCTION(getgrgid_r); 2096#else 2097#define INIT_GETPWNAM_R_AND_FRIENDS 2098#endif 2099 2100#if SANITIZER_INTERCEPT_GETPWENT 2101INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) { 2102 void *ctx; 2103 COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy); 2104 __sanitizer_passwd *res = REAL(getpwent)(dummy); 2105 unpoison_passwd(ctx, res); 2106 return res; 2107} 2108INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) { 2109 void *ctx; 2110 COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy); 2111 __sanitizer_group *res = REAL(getgrent)(dummy); 2112 unpoison_group(ctx, res); 2113 return res; 2114} 2115#define INIT_GETPWENT \ 2116 COMMON_INTERCEPT_FUNCTION(getpwent); \ 2117 COMMON_INTERCEPT_FUNCTION(getgrent); 2118#else 2119#define INIT_GETPWENT 2120#endif 2121 2122#if SANITIZER_INTERCEPT_FGETPWENT 2123INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) { 2124 void *ctx; 2125 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp); 2126 __sanitizer_passwd *res = REAL(fgetpwent)(fp); 2127 unpoison_passwd(ctx, res); 2128 return res; 2129} 2130INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) { 2131 void *ctx; 2132 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp); 2133 __sanitizer_group *res = REAL(fgetgrent)(fp); 2134 unpoison_group(ctx, res); 2135 return res; 2136} 2137#define INIT_FGETPWENT \ 2138 COMMON_INTERCEPT_FUNCTION(fgetpwent); \ 2139 COMMON_INTERCEPT_FUNCTION(fgetgrent); 2140#else 2141#define INIT_FGETPWENT 2142#endif 2143 2144#if SANITIZER_INTERCEPT_GETPWENT_R 2145INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf, 2146 SIZE_T buflen, __sanitizer_passwd **pwbufp) { 2147 void *ctx; 2148 COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp); 2149 // FIXME: under ASan the call below may write to freed memory and corrupt 2150 // its metadata. See 2151 // https://github.com/google/sanitizers/issues/321. 2152 int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp); 2153 if (!res && pwbufp) 2154 unpoison_passwd(ctx, *pwbufp); 2155 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2156 return res; 2157} 2158INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen, 2159 __sanitizer_group **pwbufp) { 2160 void *ctx; 2161 COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp); 2162 // FIXME: under ASan the call below may write to freed memory and corrupt 2163 // its metadata. See 2164 // https://github.com/google/sanitizers/issues/321. 2165 int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp); 2166 if (!res && pwbufp) 2167 unpoison_group(ctx, *pwbufp); 2168 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2169 return res; 2170} 2171#define INIT_GETPWENT_R \ 2172 COMMON_INTERCEPT_FUNCTION(getpwent_r); \ 2173 COMMON_INTERCEPT_FUNCTION(getgrent_r); 2174#else 2175#define INIT_GETPWENT_R 2176#endif 2177 2178#if SANITIZER_INTERCEPT_FGETPWENT_R 2179INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf, 2180 SIZE_T buflen, __sanitizer_passwd **pwbufp) { 2181 void *ctx; 2182 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp); 2183 // FIXME: under ASan the call below may write to freed memory and corrupt 2184 // its metadata. See 2185 // https://github.com/google/sanitizers/issues/321. 2186 int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp); 2187 if (!res && pwbufp) 2188 unpoison_passwd(ctx, *pwbufp); 2189 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2190 return res; 2191} 2192#define INIT_FGETPWENT_R \ 2193 COMMON_INTERCEPT_FUNCTION(fgetpwent_r); 2194#else 2195#define INIT_FGETPWENT_R 2196#endif 2197 2198#if SANITIZER_INTERCEPT_FGETGRENT_R 2199INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf, 2200 SIZE_T buflen, __sanitizer_group **pwbufp) { 2201 void *ctx; 2202 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp); 2203 // FIXME: under ASan the call below may write to freed memory and corrupt 2204 // its metadata. See 2205 // https://github.com/google/sanitizers/issues/321. 2206 int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp); 2207 if (!res && pwbufp) 2208 unpoison_group(ctx, *pwbufp); 2209 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2210 return res; 2211} 2212#define INIT_FGETGRENT_R \ 2213 COMMON_INTERCEPT_FUNCTION(fgetgrent_r); 2214#else 2215#define INIT_FGETGRENT_R 2216#endif 2217 2218#if SANITIZER_INTERCEPT_SETPWENT 2219// The only thing these interceptors do is disable any nested interceptors. 2220// These functions may open nss modules and call uninstrumented functions from 2221// them, and we don't want things like strlen() to trigger. 2222INTERCEPTOR(void, setpwent, int dummy) { 2223 void *ctx; 2224 COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy); 2225 REAL(setpwent)(dummy); 2226} 2227INTERCEPTOR(void, endpwent, int dummy) { 2228 void *ctx; 2229 COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy); 2230 REAL(endpwent)(dummy); 2231} 2232INTERCEPTOR(void, setgrent, int dummy) { 2233 void *ctx; 2234 COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy); 2235 REAL(setgrent)(dummy); 2236} 2237INTERCEPTOR(void, endgrent, int dummy) { 2238 void *ctx; 2239 COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy); 2240 REAL(endgrent)(dummy); 2241} 2242#define INIT_SETPWENT \ 2243 COMMON_INTERCEPT_FUNCTION(setpwent); \ 2244 COMMON_INTERCEPT_FUNCTION(endpwent); \ 2245 COMMON_INTERCEPT_FUNCTION(setgrent); \ 2246 COMMON_INTERCEPT_FUNCTION(endgrent); 2247#else 2248#define INIT_SETPWENT 2249#endif 2250 2251#if SANITIZER_INTERCEPT_CLOCK_GETTIME 2252INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) { 2253 void *ctx; 2254 COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp); 2255 // FIXME: under ASan the call below may write to freed memory and corrupt 2256 // its metadata. See 2257 // https://github.com/google/sanitizers/issues/321. 2258 int res = REAL(clock_getres)(clk_id, tp); 2259 if (!res && tp) { 2260 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz); 2261 } 2262 return res; 2263} 2264INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) { 2265 void *ctx; 2266 COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp); 2267 // FIXME: under ASan the call below may write to freed memory and corrupt 2268 // its metadata. See 2269 // https://github.com/google/sanitizers/issues/321. 2270 int res = REAL(clock_gettime)(clk_id, tp); 2271 if (!res) { 2272 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz); 2273 } 2274 return res; 2275} 2276#if SANITIZER_GLIBC 2277namespace __sanitizer { 2278extern "C" { 2279int real_clock_gettime(u32 clk_id, void *tp) { 2280 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 2281 return internal_clock_gettime(clk_id, tp); 2282 return REAL(clock_gettime)(clk_id, tp); 2283} 2284} // extern "C" 2285} // namespace __sanitizer 2286#endif 2287INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) { 2288 void *ctx; 2289 COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp); 2290 COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz); 2291 return REAL(clock_settime)(clk_id, tp); 2292} 2293#define INIT_CLOCK_GETTIME \ 2294 COMMON_INTERCEPT_FUNCTION(clock_getres); \ 2295 COMMON_INTERCEPT_FUNCTION(clock_gettime); \ 2296 COMMON_INTERCEPT_FUNCTION(clock_settime); 2297#else 2298#define INIT_CLOCK_GETTIME 2299#endif 2300 2301#if SANITIZER_INTERCEPT_CLOCK_GETCPUCLOCKID 2302INTERCEPTOR(int, clock_getcpuclockid, pid_t pid, 2303 __sanitizer_clockid_t *clockid) { 2304 void *ctx; 2305 COMMON_INTERCEPTOR_ENTER(ctx, clock_getcpuclockid, pid, clockid); 2306 int res = REAL(clock_getcpuclockid)(pid, clockid); 2307 if (!res && clockid) { 2308 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid); 2309 } 2310 return res; 2311} 2312 2313INTERCEPTOR(int, pthread_getcpuclockid, uptr thread, 2314 __sanitizer_clockid_t *clockid) { 2315 void *ctx; 2316 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getcpuclockid, thread, clockid); 2317 int res = REAL(pthread_getcpuclockid)(thread, clockid); 2318 if (!res && clockid) { 2319 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid); 2320 } 2321 return res; 2322} 2323 2324#define INIT_CLOCK_GETCPUCLOCKID \ 2325 COMMON_INTERCEPT_FUNCTION(clock_getcpuclockid); \ 2326 COMMON_INTERCEPT_FUNCTION(pthread_getcpuclockid); 2327#else 2328#define INIT_CLOCK_GETCPUCLOCKID 2329#endif 2330 2331#if SANITIZER_INTERCEPT_GETITIMER 2332INTERCEPTOR(int, getitimer, int which, void *curr_value) { 2333 void *ctx; 2334 COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value); 2335 // FIXME: under ASan the call below may write to freed memory and corrupt 2336 // its metadata. See 2337 // https://github.com/google/sanitizers/issues/321. 2338 int res = REAL(getitimer)(which, curr_value); 2339 if (!res && curr_value) { 2340 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz); 2341 } 2342 return res; 2343} 2344INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) { 2345 void *ctx; 2346 COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value); 2347 if (new_value) { 2348 // itimerval can contain padding that may be legitimately uninitialized 2349 const struct __sanitizer_itimerval *nv = 2350 (const struct __sanitizer_itimerval *)new_value; 2351 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_sec, 2352 sizeof(__sanitizer_time_t)); 2353 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_usec, 2354 sizeof(__sanitizer_suseconds_t)); 2355 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_sec, 2356 sizeof(__sanitizer_time_t)); 2357 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_usec, 2358 sizeof(__sanitizer_suseconds_t)); 2359 } 2360 // FIXME: under ASan the call below may write to freed memory and corrupt 2361 // its metadata. See 2362 // https://github.com/google/sanitizers/issues/321. 2363 int res = REAL(setitimer)(which, new_value, old_value); 2364 if (!res && old_value) { 2365 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz); 2366 } 2367 return res; 2368} 2369#define INIT_GETITIMER \ 2370 COMMON_INTERCEPT_FUNCTION(getitimer); \ 2371 COMMON_INTERCEPT_FUNCTION(setitimer); 2372#else 2373#define INIT_GETITIMER 2374#endif 2375 2376#if SANITIZER_INTERCEPT_GLOB 2377static void unpoison_glob_t(void *ctx, __sanitizer_glob_t *pglob) { 2378 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob)); 2379 // +1 for NULL pointer at the end. 2380 if (pglob->gl_pathv) 2381 COMMON_INTERCEPTOR_WRITE_RANGE( 2382 ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv)); 2383 for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) { 2384 char *p = pglob->gl_pathv[i]; 2385 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, internal_strlen(p) + 1); 2386 } 2387} 2388 2389#if SANITIZER_SOLARIS 2390INTERCEPTOR(int, glob, const char *pattern, int flags, 2391 int (*errfunc)(const char *epath, int eerrno), 2392 __sanitizer_glob_t *pglob) { 2393 void *ctx; 2394 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob); 2395 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); 2396 int res = REAL(glob)(pattern, flags, errfunc, pglob); 2397 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); 2398 return res; 2399} 2400#else 2401static THREADLOCAL __sanitizer_glob_t *pglob_copy; 2402 2403static void wrapped_gl_closedir(void *dir) { 2404 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 2405 pglob_copy->gl_closedir(dir); 2406} 2407 2408static void *wrapped_gl_readdir(void *dir) { 2409 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 2410 return pglob_copy->gl_readdir(dir); 2411} 2412 2413static void *wrapped_gl_opendir(const char *s) { 2414 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 2415 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1); 2416 return pglob_copy->gl_opendir(s); 2417} 2418 2419static int wrapped_gl_lstat(const char *s, void *st) { 2420 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 2421 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1); 2422 return pglob_copy->gl_lstat(s, st); 2423} 2424 2425static int wrapped_gl_stat(const char *s, void *st) { 2426 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 2427 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1); 2428 return pglob_copy->gl_stat(s, st); 2429} 2430 2431static const __sanitizer_glob_t kGlobCopy = { 2432 0, 0, 0, 2433 0, wrapped_gl_closedir, wrapped_gl_readdir, 2434 wrapped_gl_opendir, wrapped_gl_lstat, wrapped_gl_stat}; 2435 2436INTERCEPTOR(int, glob, const char *pattern, int flags, 2437 int (*errfunc)(const char *epath, int eerrno), 2438 __sanitizer_glob_t *pglob) { 2439 void *ctx; 2440 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob); 2441 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); 2442 __sanitizer_glob_t glob_copy; 2443 internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy)); 2444 if (flags & glob_altdirfunc) { 2445 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2446 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2447 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2448 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2449 Swap(pglob->gl_stat, glob_copy.gl_stat); 2450 pglob_copy = &glob_copy; 2451 } 2452 int res = REAL(glob)(pattern, flags, errfunc, pglob); 2453 if (flags & glob_altdirfunc) { 2454 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2455 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2456 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2457 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2458 Swap(pglob->gl_stat, glob_copy.gl_stat); 2459 } 2460 pglob_copy = 0; 2461 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); 2462 return res; 2463} 2464#endif // SANITIZER_SOLARIS 2465#define INIT_GLOB \ 2466 COMMON_INTERCEPT_FUNCTION(glob); 2467#else // SANITIZER_INTERCEPT_GLOB 2468#define INIT_GLOB 2469#endif // SANITIZER_INTERCEPT_GLOB 2470 2471#if SANITIZER_INTERCEPT_GLOB64 2472INTERCEPTOR(int, glob64, const char *pattern, int flags, 2473 int (*errfunc)(const char *epath, int eerrno), 2474 __sanitizer_glob_t *pglob) { 2475 void *ctx; 2476 COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob); 2477 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); 2478 __sanitizer_glob_t glob_copy; 2479 internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy)); 2480 if (flags & glob_altdirfunc) { 2481 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2482 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2483 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2484 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2485 Swap(pglob->gl_stat, glob_copy.gl_stat); 2486 pglob_copy = &glob_copy; 2487 } 2488 int res = REAL(glob64)(pattern, flags, errfunc, pglob); 2489 if (flags & glob_altdirfunc) { 2490 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2491 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2492 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2493 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2494 Swap(pglob->gl_stat, glob_copy.gl_stat); 2495 } 2496 pglob_copy = 0; 2497 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); 2498 return res; 2499} 2500#define INIT_GLOB64 \ 2501 COMMON_INTERCEPT_FUNCTION(glob64); 2502#else // SANITIZER_INTERCEPT_GLOB64 2503#define INIT_GLOB64 2504#endif // SANITIZER_INTERCEPT_GLOB64 2505 2506#if SANITIZER_INTERCEPT___B64_TO 2507INTERCEPTOR(int, __b64_ntop, unsigned char const *src, SIZE_T srclength, 2508 char *target, SIZE_T targsize) { 2509 void *ctx; 2510 COMMON_INTERCEPTOR_ENTER(ctx, __b64_ntop, src, srclength, target, targsize); 2511 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, srclength); 2512 int res = REAL(__b64_ntop)(src, srclength, target, targsize); 2513 if (res >= 0) 2514 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res + 1); 2515 return res; 2516} 2517INTERCEPTOR(int, __b64_pton, char const *src, char *target, SIZE_T targsize) { 2518 void *ctx; 2519 COMMON_INTERCEPTOR_ENTER(ctx, __b64_pton, src, target, targsize); 2520 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 2521 int res = REAL(__b64_pton)(src, target, targsize); 2522 if (res >= 0) 2523 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res); 2524 return res; 2525} 2526#define INIT___B64_TO \ 2527 COMMON_INTERCEPT_FUNCTION(__b64_ntop); \ 2528 COMMON_INTERCEPT_FUNCTION(__b64_pton); 2529#else // SANITIZER_INTERCEPT___B64_TO 2530#define INIT___B64_TO 2531#endif // SANITIZER_INTERCEPT___B64_TO 2532 2533#if SANITIZER_INTERCEPT___DN_EXPAND 2534# if __GLIBC_PREREQ(2, 34) 2535// Changed with https://sourceware.org/git/?p=glibc.git;h=640bbdf 2536# define DN_EXPAND_INTERCEPTOR_NAME dn_expand 2537# else 2538# define DN_EXPAND_INTERCEPTOR_NAME __dn_expand 2539# endif 2540INTERCEPTOR(int, DN_EXPAND_INTERCEPTOR_NAME, unsigned char const *base, 2541 unsigned char const *end, unsigned char const *src, char *dest, 2542 int space) { 2543 void *ctx; 2544 COMMON_INTERCEPTOR_ENTER(ctx, DN_EXPAND_INTERCEPTOR_NAME, base, end, src, 2545 dest, space); 2546 // TODO: add read check if __dn_comp intercept added 2547 int res = REAL(DN_EXPAND_INTERCEPTOR_NAME)(base, end, src, dest, space); 2548 if (res >= 0) 2549 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, internal_strlen(dest) + 1); 2550 return res; 2551} 2552# define INIT___DN_EXPAND \ 2553 COMMON_INTERCEPT_FUNCTION(DN_EXPAND_INTERCEPTOR_NAME); 2554#else // SANITIZER_INTERCEPT___DN_EXPAND 2555# define INIT___DN_EXPAND 2556#endif // SANITIZER_INTERCEPT___DN_EXPAND 2557 2558#if SANITIZER_INTERCEPT_POSIX_SPAWN 2559 2560template <class RealSpawnPtr> 2561static int PosixSpawnImpl(void *ctx, RealSpawnPtr *real_posix_spawn, pid_t *pid, 2562 const char *file_or_path, const void *file_actions, 2563 const void *attrp, char *const argv[], 2564 char *const envp[]) { 2565 COMMON_INTERCEPTOR_READ_RANGE(ctx, file_or_path, 2566 internal_strlen(file_or_path) + 1); 2567 if (argv) { 2568 for (char *const *s = argv; ; ++s) { 2569 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s)); 2570 if (!*s) break; 2571 COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1); 2572 } 2573 } 2574 if (envp) { 2575 for (char *const *s = envp; ; ++s) { 2576 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s)); 2577 if (!*s) break; 2578 COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1); 2579 } 2580 } 2581 int res = 2582 real_posix_spawn(pid, file_or_path, file_actions, attrp, argv, envp); 2583 if (res == 0) 2584 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pid, sizeof(*pid)); 2585 return res; 2586} 2587INTERCEPTOR(int, posix_spawn, pid_t *pid, const char *path, 2588 const void *file_actions, const void *attrp, char *const argv[], 2589 char *const envp[]) { 2590 void *ctx; 2591 COMMON_INTERCEPTOR_ENTER(ctx, posix_spawn, pid, path, file_actions, attrp, 2592 argv, envp); 2593 return PosixSpawnImpl(ctx, REAL(posix_spawn), pid, path, file_actions, attrp, 2594 argv, envp); 2595} 2596INTERCEPTOR(int, posix_spawnp, pid_t *pid, const char *file, 2597 const void *file_actions, const void *attrp, char *const argv[], 2598 char *const envp[]) { 2599 void *ctx; 2600 COMMON_INTERCEPTOR_ENTER(ctx, posix_spawnp, pid, file, file_actions, attrp, 2601 argv, envp); 2602 return PosixSpawnImpl(ctx, REAL(posix_spawnp), pid, file, file_actions, attrp, 2603 argv, envp); 2604} 2605# define INIT_POSIX_SPAWN \ 2606 COMMON_INTERCEPT_FUNCTION(posix_spawn); \ 2607 COMMON_INTERCEPT_FUNCTION(posix_spawnp); 2608#else // SANITIZER_INTERCEPT_POSIX_SPAWN 2609# define INIT_POSIX_SPAWN 2610#endif // SANITIZER_INTERCEPT_POSIX_SPAWN 2611 2612#if SANITIZER_INTERCEPT_WAIT 2613// According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version 2614// suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for 2615// details. 2616INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) { 2617 void *ctx; 2618 COMMON_INTERCEPTOR_ENTER(ctx, wait, status); 2619 // FIXME: under ASan the call below may write to freed memory and corrupt 2620 // its metadata. See 2621 // https://github.com/google/sanitizers/issues/321. 2622 int res = REAL(wait)(status); 2623 if (res != -1 && status) 2624 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2625 return res; 2626} 2627// On FreeBSD id_t is always 64-bit wide. 2628#if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32) 2629INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, long long id, void *infop, 2630 int options) { 2631#else 2632INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop, 2633 int options) { 2634#endif 2635 void *ctx; 2636 COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options); 2637 // FIXME: under ASan the call below may write to freed memory and corrupt 2638 // its metadata. See 2639 // https://github.com/google/sanitizers/issues/321. 2640 int res = REAL(waitid)(idtype, id, infop, options); 2641 if (res != -1 && infop) 2642 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz); 2643 return res; 2644} 2645INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) { 2646 void *ctx; 2647 COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options); 2648 // FIXME: under ASan the call below may write to freed memory and corrupt 2649 // its metadata. See 2650 // https://github.com/google/sanitizers/issues/321. 2651 int res = REAL(waitpid)(pid, status, options); 2652 if (res != -1 && status) 2653 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2654 return res; 2655} 2656INTERCEPTOR(int, wait3, int *status, int options, void *rusage) { 2657 void *ctx; 2658 COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage); 2659 // FIXME: under ASan the call below may write to freed memory and corrupt 2660 // its metadata. See 2661 // https://github.com/google/sanitizers/issues/321. 2662 int res = REAL(wait3)(status, options, rusage); 2663 if (res != -1) { 2664 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2665 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); 2666 } 2667 return res; 2668} 2669#if SANITIZER_ANDROID 2670INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) { 2671 void *ctx; 2672 COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage); 2673 // FIXME: under ASan the call below may write to freed memory and corrupt 2674 // its metadata. See 2675 // https://github.com/google/sanitizers/issues/321. 2676 int res = REAL(__wait4)(pid, status, options, rusage); 2677 if (res != -1) { 2678 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2679 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); 2680 } 2681 return res; 2682} 2683#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4); 2684#else 2685INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) { 2686 void *ctx; 2687 COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage); 2688 // FIXME: under ASan the call below may write to freed memory and corrupt 2689 // its metadata. See 2690 // https://github.com/google/sanitizers/issues/321. 2691 int res = REAL(wait4)(pid, status, options, rusage); 2692 if (res != -1) { 2693 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2694 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); 2695 } 2696 return res; 2697} 2698#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4); 2699#endif // SANITIZER_ANDROID 2700#define INIT_WAIT \ 2701 COMMON_INTERCEPT_FUNCTION(wait); \ 2702 COMMON_INTERCEPT_FUNCTION(waitid); \ 2703 COMMON_INTERCEPT_FUNCTION(waitpid); \ 2704 COMMON_INTERCEPT_FUNCTION(wait3); 2705#else 2706#define INIT_WAIT 2707#define INIT_WAIT4 2708#endif 2709 2710#if SANITIZER_INTERCEPT_INET 2711INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) { 2712 void *ctx; 2713 COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size); 2714 uptr sz = __sanitizer_in_addr_sz(af); 2715 if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz); 2716 // FIXME: figure out read size based on the address family. 2717 // FIXME: under ASan the call below may write to freed memory and corrupt 2718 // its metadata. See 2719 // https://github.com/google/sanitizers/issues/321. 2720 char *res = REAL(inet_ntop)(af, src, dst, size); 2721 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 2722 return res; 2723} 2724INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) { 2725 void *ctx; 2726 COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst); 2727 COMMON_INTERCEPTOR_READ_STRING(ctx, src, 0); 2728 // FIXME: figure out read size based on the address family. 2729 // FIXME: under ASan the call below may write to freed memory and corrupt 2730 // its metadata. See 2731 // https://github.com/google/sanitizers/issues/321. 2732 int res = REAL(inet_pton)(af, src, dst); 2733 if (res == 1) { 2734 uptr sz = __sanitizer_in_addr_sz(af); 2735 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz); 2736 } 2737 return res; 2738} 2739#define INIT_INET \ 2740 COMMON_INTERCEPT_FUNCTION(inet_ntop); \ 2741 COMMON_INTERCEPT_FUNCTION(inet_pton); 2742#else 2743#define INIT_INET 2744#endif 2745 2746#if SANITIZER_INTERCEPT_INET 2747INTERCEPTOR(int, inet_aton, const char *cp, void *dst) { 2748 void *ctx; 2749 COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst); 2750 if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, internal_strlen(cp) + 1); 2751 // FIXME: under ASan the call below may write to freed memory and corrupt 2752 // its metadata. See 2753 // https://github.com/google/sanitizers/issues/321. 2754 int res = REAL(inet_aton)(cp, dst); 2755 if (res != 0) { 2756 uptr sz = __sanitizer_in_addr_sz(af_inet); 2757 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz); 2758 } 2759 return res; 2760} 2761#define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton); 2762#else 2763#define INIT_INET_ATON 2764#endif 2765 2766#if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM 2767INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) { 2768 void *ctx; 2769 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param); 2770 // FIXME: under ASan the call below may write to freed memory and corrupt 2771 // its metadata. See 2772 // https://github.com/google/sanitizers/issues/321. 2773 int res = REAL(pthread_getschedparam)(thread, policy, param); 2774 if (res == 0) { 2775 if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy)); 2776 if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param)); 2777 } 2778 return res; 2779} 2780#define INIT_PTHREAD_GETSCHEDPARAM \ 2781 COMMON_INTERCEPT_FUNCTION(pthread_getschedparam); 2782#else 2783#define INIT_PTHREAD_GETSCHEDPARAM 2784#endif 2785 2786#if SANITIZER_INTERCEPT_GETADDRINFO 2787INTERCEPTOR(int, getaddrinfo, char *node, char *service, 2788 struct __sanitizer_addrinfo *hints, 2789 struct __sanitizer_addrinfo **out) { 2790 void *ctx; 2791 COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out); 2792 if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, internal_strlen(node) + 1); 2793 if (service) 2794 COMMON_INTERCEPTOR_READ_RANGE(ctx, service, internal_strlen(service) + 1); 2795 if (hints) 2796 COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo)); 2797 // FIXME: under ASan the call below may write to freed memory and corrupt 2798 // its metadata. See 2799 // https://github.com/google/sanitizers/issues/321. 2800 int res = REAL(getaddrinfo)(node, service, hints, out); 2801 if (res == 0 && out) { 2802 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out)); 2803 struct __sanitizer_addrinfo *p = *out; 2804 while (p) { 2805 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 2806 if (p->ai_addr) 2807 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen); 2808 if (p->ai_canonname) 2809 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname, 2810 internal_strlen(p->ai_canonname) + 1); 2811 p = p->ai_next; 2812 } 2813 } 2814 return res; 2815} 2816#define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo); 2817#else 2818#define INIT_GETADDRINFO 2819#endif 2820 2821#if SANITIZER_INTERCEPT_GETNAMEINFO 2822INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host, 2823 unsigned hostlen, char *serv, unsigned servlen, int flags) { 2824 void *ctx; 2825 COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen, 2826 serv, servlen, flags); 2827 // FIXME: consider adding READ_RANGE(sockaddr, salen) 2828 // There is padding in in_addr that may make this too noisy 2829 // FIXME: under ASan the call below may write to freed memory and corrupt 2830 // its metadata. See 2831 // https://github.com/google/sanitizers/issues/321. 2832 int res = 2833 REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags); 2834 if (res == 0) { 2835 if (host && hostlen) 2836 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, internal_strlen(host) + 1); 2837 if (serv && servlen) 2838 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, internal_strlen(serv) + 1); 2839 } 2840 return res; 2841} 2842#define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo); 2843#else 2844#define INIT_GETNAMEINFO 2845#endif 2846 2847#if SANITIZER_INTERCEPT_GETSOCKNAME 2848INTERCEPTOR(int, getsockname, int sock_fd, void *addr, unsigned *addrlen) { 2849 void *ctx; 2850 COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen); 2851 unsigned addr_sz; 2852 if (addrlen) { 2853 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 2854 addr_sz = *addrlen; 2855 } 2856 // FIXME: under ASan the call below may write to freed memory and corrupt 2857 // its metadata. See 2858 // https://github.com/google/sanitizers/issues/321. 2859 int res = REAL(getsockname)(sock_fd, addr, addrlen); 2860 if (!res && addr && addrlen) { 2861 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen)); 2862 } 2863 return res; 2864} 2865#define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname); 2866#else 2867#define INIT_GETSOCKNAME 2868#endif 2869 2870#if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R 2871static void write_hostent(void *ctx, struct __sanitizer_hostent *h) { 2872 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent)); 2873 if (h->h_name) 2874 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, internal_strlen(h->h_name) + 1); 2875 char **p = h->h_aliases; 2876 while (*p) { 2877 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1); 2878 ++p; 2879 } 2880 COMMON_INTERCEPTOR_WRITE_RANGE( 2881 ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases)); 2882 p = h->h_addr_list; 2883 while (*p) { 2884 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length); 2885 ++p; 2886 } 2887 COMMON_INTERCEPTOR_WRITE_RANGE( 2888 ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list)); 2889} 2890#endif 2891 2892#if SANITIZER_INTERCEPT_GETHOSTBYNAME 2893INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) { 2894 void *ctx; 2895 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name); 2896 struct __sanitizer_hostent *res = REAL(gethostbyname)(name); 2897 if (res) write_hostent(ctx, res); 2898 return res; 2899} 2900 2901INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len, 2902 int type) { 2903 void *ctx; 2904 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type); 2905 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len); 2906 struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type); 2907 if (res) write_hostent(ctx, res); 2908 return res; 2909} 2910 2911INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) { 2912 void *ctx; 2913 COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake); 2914 struct __sanitizer_hostent *res = REAL(gethostent)(fake); 2915 if (res) write_hostent(ctx, res); 2916 return res; 2917} 2918#define INIT_GETHOSTBYNAME \ 2919 COMMON_INTERCEPT_FUNCTION(gethostent); \ 2920 COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \ 2921 COMMON_INTERCEPT_FUNCTION(gethostbyname); 2922#else 2923#define INIT_GETHOSTBYNAME 2924#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME 2925 2926#if SANITIZER_INTERCEPT_GETHOSTBYNAME2 2927INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) { 2928 void *ctx; 2929 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af); 2930 struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af); 2931 if (res) write_hostent(ctx, res); 2932 return res; 2933} 2934#define INIT_GETHOSTBYNAME2 COMMON_INTERCEPT_FUNCTION(gethostbyname2); 2935#else 2936#define INIT_GETHOSTBYNAME2 2937#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME2 2938 2939#if SANITIZER_INTERCEPT_GETHOSTBYNAME_R 2940INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret, 2941 char *buf, SIZE_T buflen, __sanitizer_hostent **result, 2942 int *h_errnop) { 2943 void *ctx; 2944 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result, 2945 h_errnop); 2946 // FIXME: under ASan the call below may write to freed memory and corrupt 2947 // its metadata. See 2948 // https://github.com/google/sanitizers/issues/321. 2949 int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop); 2950 if (result) { 2951 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2952 if (res == 0 && *result) write_hostent(ctx, *result); 2953 } 2954 if (h_errnop) 2955 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 2956 return res; 2957} 2958#define INIT_GETHOSTBYNAME_R COMMON_INTERCEPT_FUNCTION(gethostbyname_r); 2959#else 2960#define INIT_GETHOSTBYNAME_R 2961#endif 2962 2963#if SANITIZER_INTERCEPT_GETHOSTENT_R 2964INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf, 2965 SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) { 2966 void *ctx; 2967 COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result, 2968 h_errnop); 2969 // FIXME: under ASan the call below may write to freed memory and corrupt 2970 // its metadata. See 2971 // https://github.com/google/sanitizers/issues/321. 2972 int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop); 2973 if (result) { 2974 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2975 if (res == 0 && *result) write_hostent(ctx, *result); 2976 } 2977 if (h_errnop) 2978 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 2979 return res; 2980} 2981#define INIT_GETHOSTENT_R \ 2982 COMMON_INTERCEPT_FUNCTION(gethostent_r); 2983#else 2984#define INIT_GETHOSTENT_R 2985#endif 2986 2987#if SANITIZER_INTERCEPT_GETHOSTBYADDR_R 2988INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type, 2989 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen, 2990 __sanitizer_hostent **result, int *h_errnop) { 2991 void *ctx; 2992 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf, 2993 buflen, result, h_errnop); 2994 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len); 2995 // FIXME: under ASan the call below may write to freed memory and corrupt 2996 // its metadata. See 2997 // https://github.com/google/sanitizers/issues/321. 2998 int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result, 2999 h_errnop); 3000 if (result) { 3001 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 3002 if (res == 0 && *result) write_hostent(ctx, *result); 3003 } 3004 if (h_errnop) 3005 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 3006 return res; 3007} 3008#define INIT_GETHOSTBYADDR_R \ 3009 COMMON_INTERCEPT_FUNCTION(gethostbyaddr_r); 3010#else 3011#define INIT_GETHOSTBYADDR_R 3012#endif 3013 3014#if SANITIZER_INTERCEPT_GETHOSTBYNAME2_R 3015INTERCEPTOR(int, gethostbyname2_r, char *name, int af, 3016 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen, 3017 __sanitizer_hostent **result, int *h_errnop) { 3018 void *ctx; 3019 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen, 3020 result, h_errnop); 3021 // FIXME: under ASan the call below may write to freed memory and corrupt 3022 // its metadata. See 3023 // https://github.com/google/sanitizers/issues/321. 3024 int res = 3025 REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop); 3026 if (result) { 3027 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 3028 if (res == 0 && *result) write_hostent(ctx, *result); 3029 } 3030 if (h_errnop) 3031 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 3032 return res; 3033} 3034#define INIT_GETHOSTBYNAME2_R \ 3035 COMMON_INTERCEPT_FUNCTION(gethostbyname2_r); 3036#else 3037#define INIT_GETHOSTBYNAME2_R 3038#endif 3039 3040#if SANITIZER_INTERCEPT_GETSOCKOPT 3041INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval, 3042 int *optlen) { 3043 void *ctx; 3044 COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval, 3045 optlen); 3046 if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen)); 3047 // FIXME: under ASan the call below may write to freed memory and corrupt 3048 // its metadata. See 3049 // https://github.com/google/sanitizers/issues/321. 3050 int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen); 3051 if (res == 0) 3052 if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen); 3053 return res; 3054} 3055#define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt); 3056#else 3057#define INIT_GETSOCKOPT 3058#endif 3059 3060#if SANITIZER_INTERCEPT_ACCEPT 3061INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) { 3062 void *ctx; 3063 COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen); 3064 unsigned addrlen0 = 0; 3065 if (addrlen) { 3066 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 3067 addrlen0 = *addrlen; 3068 } 3069 int fd2 = REAL(accept)(fd, addr, addrlen); 3070 if (fd2 >= 0) { 3071 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); 3072 if (addr && addrlen) 3073 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); 3074 } 3075 return fd2; 3076} 3077#define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept); 3078#else 3079#define INIT_ACCEPT 3080#endif 3081 3082#if SANITIZER_INTERCEPT_ACCEPT4 3083INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) { 3084 void *ctx; 3085 COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f); 3086 unsigned addrlen0 = 0; 3087 if (addrlen) { 3088 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 3089 addrlen0 = *addrlen; 3090 } 3091 // FIXME: under ASan the call below may write to freed memory and corrupt 3092 // its metadata. See 3093 // https://github.com/google/sanitizers/issues/321. 3094 int fd2 = REAL(accept4)(fd, addr, addrlen, f); 3095 if (fd2 >= 0) { 3096 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); 3097 if (addr && addrlen) 3098 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); 3099 } 3100 return fd2; 3101} 3102#define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4); 3103#else 3104#define INIT_ACCEPT4 3105#endif 3106 3107#if SANITIZER_INTERCEPT_PACCEPT 3108INTERCEPTOR(int, paccept, int fd, void *addr, unsigned *addrlen, 3109 __sanitizer_sigset_t *set, int f) { 3110 void *ctx; 3111 COMMON_INTERCEPTOR_ENTER(ctx, paccept, fd, addr, addrlen, set, f); 3112 unsigned addrlen0 = 0; 3113 if (addrlen) { 3114 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 3115 addrlen0 = *addrlen; 3116 } 3117 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 3118 int fd2 = REAL(paccept)(fd, addr, addrlen, set, f); 3119 if (fd2 >= 0) { 3120 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); 3121 if (addr && addrlen) 3122 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); 3123 } 3124 return fd2; 3125} 3126#define INIT_PACCEPT COMMON_INTERCEPT_FUNCTION(paccept); 3127#else 3128#define INIT_PACCEPT 3129#endif 3130 3131#if SANITIZER_INTERCEPT_MODF 3132INTERCEPTOR(double, modf, double x, double *iptr) { 3133 void *ctx; 3134 COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr); 3135 // FIXME: under ASan the call below may write to freed memory and corrupt 3136 // its metadata. See 3137 // https://github.com/google/sanitizers/issues/321. 3138 double res = REAL(modf)(x, iptr); 3139 if (iptr) { 3140 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); 3141 } 3142 return res; 3143} 3144INTERCEPTOR(float, modff, float x, float *iptr) { 3145 void *ctx; 3146 COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr); 3147 // FIXME: under ASan the call below may write to freed memory and corrupt 3148 // its metadata. See 3149 // https://github.com/google/sanitizers/issues/321. 3150 float res = REAL(modff)(x, iptr); 3151 if (iptr) { 3152 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); 3153 } 3154 return res; 3155} 3156INTERCEPTOR(long double, modfl, long double x, long double *iptr) { 3157 void *ctx; 3158 COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr); 3159 // FIXME: under ASan the call below may write to freed memory and corrupt 3160 // its metadata. See 3161 // https://github.com/google/sanitizers/issues/321. 3162 long double res = REAL(modfl)(x, iptr); 3163 if (iptr) { 3164 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); 3165 } 3166 return res; 3167} 3168#define INIT_MODF \ 3169 COMMON_INTERCEPT_FUNCTION(modf); \ 3170 COMMON_INTERCEPT_FUNCTION(modff); \ 3171 COMMON_INTERCEPT_FUNCTION_LDBL(modfl); 3172#else 3173#define INIT_MODF 3174#endif 3175 3176#if SANITIZER_INTERCEPT_RECVMSG || SANITIZER_INTERCEPT_RECVMMSG 3177static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg, 3178 SSIZE_T maxlen) { 3179 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg)); 3180 if (msg->msg_name && msg->msg_namelen) 3181 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name, msg->msg_namelen); 3182 if (msg->msg_iov && msg->msg_iovlen) 3183 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov, 3184 sizeof(*msg->msg_iov) * msg->msg_iovlen); 3185 write_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen); 3186 if (msg->msg_control && msg->msg_controllen) 3187 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen); 3188} 3189#endif 3190 3191#if SANITIZER_INTERCEPT_RECVMSG 3192INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg, 3193 int flags) { 3194 void *ctx; 3195 COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags); 3196 // FIXME: under ASan the call below may write to freed memory and corrupt 3197 // its metadata. See 3198 // https://github.com/google/sanitizers/issues/321. 3199 SSIZE_T res = REAL(recvmsg)(fd, msg, flags); 3200 if (res >= 0) { 3201 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 3202 if (msg) { 3203 write_msghdr(ctx, msg, res); 3204 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg); 3205 } 3206 } 3207 return res; 3208} 3209#define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg); 3210#else 3211#define INIT_RECVMSG 3212#endif 3213 3214#if SANITIZER_INTERCEPT_RECVMMSG 3215INTERCEPTOR(int, recvmmsg, int fd, struct __sanitizer_mmsghdr *msgvec, 3216 unsigned int vlen, int flags, void *timeout) { 3217 void *ctx; 3218 COMMON_INTERCEPTOR_ENTER(ctx, recvmmsg, fd, msgvec, vlen, flags, timeout); 3219 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz); 3220 int res = REAL(recvmmsg)(fd, msgvec, vlen, flags, timeout); 3221 if (res >= 0) { 3222 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 3223 for (int i = 0; i < res; ++i) { 3224 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len, 3225 sizeof(msgvec[i].msg_len)); 3226 write_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len); 3227 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, &msgvec[i].msg_hdr); 3228 } 3229 } 3230 return res; 3231} 3232#define INIT_RECVMMSG COMMON_INTERCEPT_FUNCTION(recvmmsg); 3233#else 3234#define INIT_RECVMMSG 3235#endif 3236 3237#if SANITIZER_INTERCEPT_SENDMSG || SANITIZER_INTERCEPT_SENDMMSG 3238static void read_msghdr_control(void *ctx, void *control, uptr controllen) { 3239 const unsigned kCmsgDataOffset = 3240 RoundUpTo(sizeof(__sanitizer_cmsghdr), sizeof(uptr)); 3241 3242 char *p = (char *)control; 3243 char *const control_end = p + controllen; 3244 while (true) { 3245 if (p + sizeof(__sanitizer_cmsghdr) > control_end) break; 3246 __sanitizer_cmsghdr *cmsg = (__sanitizer_cmsghdr *)p; 3247 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_len, sizeof(cmsg->cmsg_len)); 3248 3249 if (p + RoundUpTo(cmsg->cmsg_len, sizeof(uptr)) > control_end) break; 3250 3251 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_level, 3252 sizeof(cmsg->cmsg_level)); 3253 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_type, 3254 sizeof(cmsg->cmsg_type)); 3255 3256 if (cmsg->cmsg_len > kCmsgDataOffset) { 3257 char *data = p + kCmsgDataOffset; 3258 unsigned data_len = cmsg->cmsg_len - kCmsgDataOffset; 3259 if (data_len > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, data, data_len); 3260 } 3261 3262 p += RoundUpTo(cmsg->cmsg_len, sizeof(uptr)); 3263 } 3264} 3265 3266static void read_msghdr(void *ctx, struct __sanitizer_msghdr *msg, 3267 SSIZE_T maxlen) { 3268#define R(f) \ 3269 COMMON_INTERCEPTOR_READ_RANGE(ctx, &msg->msg_##f, sizeof(msg->msg_##f)) 3270 R(name); 3271 R(namelen); 3272 R(iov); 3273 R(iovlen); 3274 R(control); 3275 R(controllen); 3276 R(flags); 3277#undef R 3278 if (msg->msg_name && msg->msg_namelen) 3279 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_name, msg->msg_namelen); 3280 if (msg->msg_iov && msg->msg_iovlen) 3281 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_iov, 3282 sizeof(*msg->msg_iov) * msg->msg_iovlen); 3283 read_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen); 3284 if (msg->msg_control && msg->msg_controllen) 3285 read_msghdr_control(ctx, msg->msg_control, msg->msg_controllen); 3286} 3287#endif 3288 3289#if SANITIZER_INTERCEPT_SENDMSG 3290INTERCEPTOR(SSIZE_T, sendmsg, int fd, struct __sanitizer_msghdr *msg, 3291 int flags) { 3292 void *ctx; 3293 COMMON_INTERCEPTOR_ENTER(ctx, sendmsg, fd, msg, flags); 3294 if (fd >= 0) { 3295 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 3296 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 3297 } 3298 SSIZE_T res = REAL(sendmsg)(fd, msg, flags); 3299 if (common_flags()->intercept_send && res >= 0 && msg) 3300 read_msghdr(ctx, msg, res); 3301 return res; 3302} 3303#define INIT_SENDMSG COMMON_INTERCEPT_FUNCTION(sendmsg); 3304#else 3305#define INIT_SENDMSG 3306#endif 3307 3308#if SANITIZER_INTERCEPT_SENDMMSG 3309INTERCEPTOR(int, sendmmsg, int fd, struct __sanitizer_mmsghdr *msgvec, 3310 unsigned vlen, int flags) { 3311 void *ctx; 3312 COMMON_INTERCEPTOR_ENTER(ctx, sendmmsg, fd, msgvec, vlen, flags); 3313 if (fd >= 0) { 3314 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 3315 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 3316 } 3317 int res = REAL(sendmmsg)(fd, msgvec, vlen, flags); 3318 if (res >= 0 && msgvec) { 3319 for (int i = 0; i < res; ++i) { 3320 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len, 3321 sizeof(msgvec[i].msg_len)); 3322 if (common_flags()->intercept_send) 3323 read_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len); 3324 } 3325 } 3326 return res; 3327} 3328#define INIT_SENDMMSG COMMON_INTERCEPT_FUNCTION(sendmmsg); 3329#else 3330#define INIT_SENDMMSG 3331#endif 3332 3333#if SANITIZER_INTERCEPT_SYSMSG 3334INTERCEPTOR(int, msgsnd, int msqid, const void *msgp, SIZE_T msgsz, 3335 int msgflg) { 3336 void *ctx; 3337 COMMON_INTERCEPTOR_ENTER(ctx, msgsnd, msqid, msgp, msgsz, msgflg); 3338 if (msgp) 3339 COMMON_INTERCEPTOR_READ_RANGE(ctx, msgp, sizeof(long) + msgsz); 3340 int res = REAL(msgsnd)(msqid, msgp, msgsz, msgflg); 3341 return res; 3342} 3343 3344INTERCEPTOR(SSIZE_T, msgrcv, int msqid, void *msgp, SIZE_T msgsz, 3345 long msgtyp, int msgflg) { 3346 void *ctx; 3347 COMMON_INTERCEPTOR_ENTER(ctx, msgrcv, msqid, msgp, msgsz, msgtyp, msgflg); 3348 SSIZE_T len = REAL(msgrcv)(msqid, msgp, msgsz, msgtyp, msgflg); 3349 if (len != -1) 3350 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msgp, sizeof(long) + len); 3351 return len; 3352} 3353 3354#define INIT_SYSMSG \ 3355 COMMON_INTERCEPT_FUNCTION(msgsnd); \ 3356 COMMON_INTERCEPT_FUNCTION(msgrcv); 3357#else 3358#define INIT_SYSMSG 3359#endif 3360 3361#if SANITIZER_INTERCEPT_GETPEERNAME 3362INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) { 3363 void *ctx; 3364 COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen); 3365 unsigned addr_sz; 3366 if (addrlen) { 3367 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 3368 addr_sz = *addrlen; 3369 } 3370 // FIXME: under ASan the call below may write to freed memory and corrupt 3371 // its metadata. See 3372 // https://github.com/google/sanitizers/issues/321. 3373 int res = REAL(getpeername)(sockfd, addr, addrlen); 3374 if (!res && addr && addrlen) { 3375 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen)); 3376 } 3377 return res; 3378} 3379#define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername); 3380#else 3381#define INIT_GETPEERNAME 3382#endif 3383 3384#if SANITIZER_INTERCEPT_SYSINFO 3385INTERCEPTOR(int, sysinfo, void *info) { 3386 void *ctx; 3387 // FIXME: under ASan the call below may write to freed memory and corrupt 3388 // its metadata. See 3389 // https://github.com/google/sanitizers/issues/321. 3390 COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info); 3391 int res = REAL(sysinfo)(info); 3392 if (!res && info) 3393 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz); 3394 return res; 3395} 3396#define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo); 3397#else 3398#define INIT_SYSINFO 3399#endif 3400 3401#if SANITIZER_INTERCEPT_READDIR 3402INTERCEPTOR(__sanitizer_dirent *, opendir, const char *path) { 3403 void *ctx; 3404 COMMON_INTERCEPTOR_ENTER(ctx, opendir, path); 3405 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 3406 __sanitizer_dirent *res = REAL(opendir)(path); 3407 if (res) 3408 COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path); 3409 return res; 3410} 3411 3412INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) { 3413 void *ctx; 3414 COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp); 3415 // FIXME: under ASan the call below may write to freed memory and corrupt 3416 // its metadata. See 3417 // https://github.com/google/sanitizers/issues/321. 3418 __sanitizer_dirent *res = REAL(readdir)(dirp); 3419 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen); 3420 return res; 3421} 3422 3423INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry, 3424 __sanitizer_dirent **result) { 3425 void *ctx; 3426 COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result); 3427 // FIXME: under ASan the call below may write to freed memory and corrupt 3428 // its metadata. See 3429 // https://github.com/google/sanitizers/issues/321. 3430 int res = REAL(readdir_r)(dirp, entry, result); 3431 if (!res) { 3432 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 3433 if (*result) 3434 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen); 3435 } 3436 return res; 3437} 3438 3439#define INIT_READDIR \ 3440 COMMON_INTERCEPT_FUNCTION(opendir); \ 3441 COMMON_INTERCEPT_FUNCTION(readdir); \ 3442 COMMON_INTERCEPT_FUNCTION(readdir_r); 3443#else 3444#define INIT_READDIR 3445#endif 3446 3447#if SANITIZER_INTERCEPT_READDIR64 3448INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) { 3449 void *ctx; 3450 COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp); 3451 // FIXME: under ASan the call below may write to freed memory and corrupt 3452 // its metadata. See 3453 // https://github.com/google/sanitizers/issues/321. 3454 __sanitizer_dirent64 *res = REAL(readdir64)(dirp); 3455 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen); 3456 return res; 3457} 3458 3459INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry, 3460 __sanitizer_dirent64 **result) { 3461 void *ctx; 3462 COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result); 3463 // FIXME: under ASan the call below may write to freed memory and corrupt 3464 // its metadata. See 3465 // https://github.com/google/sanitizers/issues/321. 3466 int res = REAL(readdir64_r)(dirp, entry, result); 3467 if (!res) { 3468 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 3469 if (*result) 3470 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen); 3471 } 3472 return res; 3473} 3474#define INIT_READDIR64 \ 3475 COMMON_INTERCEPT_FUNCTION(readdir64); \ 3476 COMMON_INTERCEPT_FUNCTION(readdir64_r); 3477#else 3478#define INIT_READDIR64 3479#endif 3480 3481#if SANITIZER_INTERCEPT_PTRACE 3482INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) { 3483 void *ctx; 3484 COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data); 3485 __sanitizer_iovec local_iovec; 3486 3487 if (data) { 3488 if (request == ptrace_setregs) { 3489 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_regs_struct_sz); 3490 } else if (request == ptrace_setfpregs) { 3491 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpregs_struct_sz); 3492 } else if (request == ptrace_setfpxregs) { 3493 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpxregs_struct_sz); 3494 } else if (request == ptrace_setvfpregs) { 3495 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_vfpregs_struct_sz); 3496 } else if (request == ptrace_setsiginfo) { 3497 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, siginfo_t_sz); 3498 3499 // Some kernel might zero the iovec::iov_base in case of invalid 3500 // write access. In this case copy the invalid address for further 3501 // inspection. 3502 } else if (request == ptrace_setregset || request == ptrace_getregset) { 3503 __sanitizer_iovec *iovec = (__sanitizer_iovec*)data; 3504 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec)); 3505 local_iovec = *iovec; 3506 if (request == ptrace_setregset) 3507 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec->iov_base, iovec->iov_len); 3508 } 3509 } 3510 3511 // FIXME: under ASan the call below may write to freed memory and corrupt 3512 // its metadata. See 3513 // https://github.com/google/sanitizers/issues/321. 3514 uptr res = REAL(ptrace)(request, pid, addr, data); 3515 3516 if (!res && data) { 3517 // Note that PEEK* requests assign different meaning to the return value. 3518 // This function does not handle them (nor does it need to). 3519 if (request == ptrace_getregs) { 3520 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_regs_struct_sz); 3521 } else if (request == ptrace_getfpregs) { 3522 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpregs_struct_sz); 3523 } else if (request == ptrace_getfpxregs) { 3524 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpxregs_struct_sz); 3525 } else if (request == ptrace_getvfpregs) { 3526 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_vfpregs_struct_sz); 3527 } else if (request == ptrace_getsiginfo) { 3528 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, siginfo_t_sz); 3529 } else if (request == ptrace_geteventmsg) { 3530 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(unsigned long)); 3531 } else if (request == ptrace_getregset) { 3532 __sanitizer_iovec *iovec = (__sanitizer_iovec*)data; 3533 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec, sizeof(*iovec)); 3534 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, local_iovec.iov_base, 3535 local_iovec.iov_len); 3536 } 3537 } 3538 return res; 3539} 3540 3541#define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace); 3542#else 3543#define INIT_PTRACE 3544#endif 3545 3546#if SANITIZER_INTERCEPT_SETLOCALE 3547static void unpoison_ctype_arrays(void *ctx) { 3548#if SANITIZER_NETBSD 3549 // These arrays contain 256 regular elements in unsigned char range + 1 EOF 3550 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _ctype_tab_, 257 * sizeof(short)); 3551 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _toupper_tab_, 257 * sizeof(short)); 3552 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _tolower_tab_, 257 * sizeof(short)); 3553#endif 3554} 3555 3556INTERCEPTOR(char *, setlocale, int category, char *locale) { 3557 void *ctx; 3558 COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale); 3559 if (locale) 3560 COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, internal_strlen(locale) + 1); 3561 char *res = REAL(setlocale)(category, locale); 3562 if (res) { 3563 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 3564 unpoison_ctype_arrays(ctx); 3565 } 3566 return res; 3567} 3568 3569#define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale); 3570#else 3571#define INIT_SETLOCALE 3572#endif 3573 3574#if SANITIZER_INTERCEPT_GETCWD 3575INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) { 3576 void *ctx; 3577 COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size); 3578 // FIXME: under ASan the call below may write to freed memory and corrupt 3579 // its metadata. See 3580 // https://github.com/google/sanitizers/issues/321. 3581 char *res = REAL(getcwd)(buf, size); 3582 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 3583 return res; 3584} 3585#define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd); 3586#else 3587#define INIT_GETCWD 3588#endif 3589 3590#if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME 3591INTERCEPTOR(char *, get_current_dir_name, int fake) { 3592 void *ctx; 3593 COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name, fake); 3594 // FIXME: under ASan the call below may write to freed memory and corrupt 3595 // its metadata. See 3596 // https://github.com/google/sanitizers/issues/321. 3597 char *res = REAL(get_current_dir_name)(fake); 3598 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 3599 return res; 3600} 3601 3602#define INIT_GET_CURRENT_DIR_NAME \ 3603 COMMON_INTERCEPT_FUNCTION(get_current_dir_name); 3604#else 3605#define INIT_GET_CURRENT_DIR_NAME 3606#endif 3607 3608UNUSED static inline void FixRealStrtolEndptr(const char *nptr, char **endptr) { 3609 CHECK(endptr); 3610 if (nptr == *endptr) { 3611 // No digits were found at strtol call, we need to find out the last 3612 // symbol accessed by strtoll on our own. 3613 // We get this symbol by skipping leading blanks and optional +/- sign. 3614 while (IsSpace(*nptr)) nptr++; 3615 if (*nptr == '+' || *nptr == '-') nptr++; 3616 *endptr = const_cast<char *>(nptr); 3617 } 3618 CHECK(*endptr >= nptr); 3619} 3620 3621UNUSED static inline void StrtolFixAndCheck(void *ctx, const char *nptr, 3622 char **endptr, char *real_endptr, int base) { 3623 if (endptr) { 3624 *endptr = real_endptr; 3625 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr)); 3626 } 3627 // If base has unsupported value, strtol can exit with EINVAL 3628 // without reading any characters. So do additional checks only 3629 // if base is valid. 3630 bool is_valid_base = (base == 0) || (2 <= base && base <= 36); 3631 if (is_valid_base) { 3632 FixRealStrtolEndptr(nptr, &real_endptr); 3633 } 3634 COMMON_INTERCEPTOR_READ_STRING(ctx, nptr, is_valid_base ? 3635 (real_endptr - nptr) + 1 : 0); 3636} 3637 3638 3639#if SANITIZER_INTERCEPT_STRTOIMAX 3640INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) { 3641 void *ctx; 3642 COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base); 3643 // FIXME: under ASan the call below may write to freed memory and corrupt 3644 // its metadata. See 3645 // https://github.com/google/sanitizers/issues/321. 3646 char *real_endptr; 3647 INTMAX_T res = REAL(strtoimax)(nptr, &real_endptr, base); 3648 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 3649 return res; 3650} 3651 3652INTERCEPTOR(UINTMAX_T, strtoumax, const char *nptr, char **endptr, int base) { 3653 void *ctx; 3654 COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base); 3655 // FIXME: under ASan the call below may write to freed memory and corrupt 3656 // its metadata. See 3657 // https://github.com/google/sanitizers/issues/321. 3658 char *real_endptr; 3659 UINTMAX_T res = REAL(strtoumax)(nptr, &real_endptr, base); 3660 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 3661 return res; 3662} 3663 3664#define INIT_STRTOIMAX \ 3665 COMMON_INTERCEPT_FUNCTION(strtoimax); \ 3666 COMMON_INTERCEPT_FUNCTION(strtoumax); 3667#else 3668#define INIT_STRTOIMAX 3669#endif 3670 3671#if SANITIZER_INTERCEPT_MBSTOWCS 3672INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) { 3673 void *ctx; 3674 COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len); 3675 // FIXME: under ASan the call below may write to freed memory and corrupt 3676 // its metadata. See 3677 // https://github.com/google/sanitizers/issues/321. 3678 SIZE_T res = REAL(mbstowcs)(dest, src, len); 3679 if (res != (SIZE_T) - 1 && dest) { 3680 SIZE_T write_cnt = res + (res < len); 3681 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); 3682 } 3683 return res; 3684} 3685 3686INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len, 3687 void *ps) { 3688 void *ctx; 3689 COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps); 3690 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3691 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3692 // FIXME: under ASan the call below may write to freed memory and corrupt 3693 // its metadata. See 3694 // https://github.com/google/sanitizers/issues/321. 3695 SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps); 3696 if (res != (SIZE_T)(-1) && dest && src) { 3697 // This function, and several others, may or may not write the terminating 3698 // \0 character. They write it iff they clear *src. 3699 SIZE_T write_cnt = res + !*src; 3700 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); 3701 } 3702 return res; 3703} 3704 3705#define INIT_MBSTOWCS \ 3706 COMMON_INTERCEPT_FUNCTION(mbstowcs); \ 3707 COMMON_INTERCEPT_FUNCTION(mbsrtowcs); 3708#else 3709#define INIT_MBSTOWCS 3710#endif 3711 3712#if SANITIZER_INTERCEPT_MBSNRTOWCS 3713INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms, 3714 SIZE_T len, void *ps) { 3715 void *ctx; 3716 COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps); 3717 if (src) { 3718 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3719 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms); 3720 } 3721 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3722 // FIXME: under ASan the call below may write to freed memory and corrupt 3723 // its metadata. See 3724 // https://github.com/google/sanitizers/issues/321. 3725 SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps); 3726 if (res != (SIZE_T)(-1) && dest && src) { 3727 SIZE_T write_cnt = res + !*src; 3728 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); 3729 } 3730 return res; 3731} 3732 3733#define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs); 3734#else 3735#define INIT_MBSNRTOWCS 3736#endif 3737 3738#if SANITIZER_INTERCEPT_WCSTOMBS 3739INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) { 3740 void *ctx; 3741 COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len); 3742 // FIXME: under ASan the call below may write to freed memory and corrupt 3743 // its metadata. See 3744 // https://github.com/google/sanitizers/issues/321. 3745 SIZE_T res = REAL(wcstombs)(dest, src, len); 3746 if (res != (SIZE_T) - 1 && dest) { 3747 SIZE_T write_cnt = res + (res < len); 3748 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3749 } 3750 return res; 3751} 3752 3753INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len, 3754 void *ps) { 3755 void *ctx; 3756 COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps); 3757 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3758 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3759 // FIXME: under ASan the call below may write to freed memory and corrupt 3760 // its metadata. See 3761 // https://github.com/google/sanitizers/issues/321. 3762 SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps); 3763 if (res != (SIZE_T) - 1 && dest && src) { 3764 SIZE_T write_cnt = res + !*src; 3765 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3766 } 3767 return res; 3768} 3769 3770#define INIT_WCSTOMBS \ 3771 COMMON_INTERCEPT_FUNCTION(wcstombs); \ 3772 COMMON_INTERCEPT_FUNCTION(wcsrtombs); 3773#else 3774#define INIT_WCSTOMBS 3775#endif 3776 3777#if SANITIZER_INTERCEPT_WCSNRTOMBS 3778INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms, 3779 SIZE_T len, void *ps) { 3780 void *ctx; 3781 COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps); 3782 if (src) { 3783 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3784 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms); 3785 } 3786 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3787 // FIXME: under ASan the call below may write to freed memory and corrupt 3788 // its metadata. See 3789 // https://github.com/google/sanitizers/issues/321. 3790 SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps); 3791 if (res != ((SIZE_T)-1) && dest && src) { 3792 SIZE_T write_cnt = res + !*src; 3793 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3794 } 3795 return res; 3796} 3797 3798#define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs); 3799#else 3800#define INIT_WCSNRTOMBS 3801#endif 3802 3803 3804#if SANITIZER_INTERCEPT_WCRTOMB 3805INTERCEPTOR(SIZE_T, wcrtomb, char *dest, wchar_t src, void *ps) { 3806 void *ctx; 3807 COMMON_INTERCEPTOR_ENTER(ctx, wcrtomb, dest, src, ps); 3808 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3809 3810 if (!dest) 3811 return REAL(wcrtomb)(dest, src, ps); 3812 3813 char local_dest[32]; 3814 SIZE_T res = REAL(wcrtomb)(local_dest, src, ps); 3815 if (res != ((SIZE_T)-1)) { 3816 CHECK_LE(res, sizeof(local_dest)); 3817 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res); 3818 REAL(memcpy)(dest, local_dest, res); 3819 } 3820 return res; 3821} 3822 3823#define INIT_WCRTOMB COMMON_INTERCEPT_FUNCTION(wcrtomb); 3824#else 3825#define INIT_WCRTOMB 3826#endif 3827 3828#if SANITIZER_INTERCEPT_WCTOMB 3829INTERCEPTOR(int, wctomb, char *dest, wchar_t src) { 3830 void *ctx; 3831 COMMON_INTERCEPTOR_ENTER(ctx, wctomb, dest, src); 3832 if (!dest) 3833 return REAL(wctomb)(dest, src); 3834 3835 char local_dest[32]; 3836 int res = REAL(wctomb)(local_dest, src); 3837 if (res != -1) { 3838 CHECK_LE(res, sizeof(local_dest)); 3839 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res); 3840 REAL(memcpy)(dest, local_dest, res); 3841 } 3842 return res; 3843} 3844 3845#define INIT_WCTOMB COMMON_INTERCEPT_FUNCTION(wctomb); 3846#else 3847#define INIT_WCTOMB 3848#endif 3849 3850#if SANITIZER_INTERCEPT_TCGETATTR 3851INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) { 3852 void *ctx; 3853 COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p); 3854 // FIXME: under ASan the call below may write to freed memory and corrupt 3855 // its metadata. See 3856 // https://github.com/google/sanitizers/issues/321. 3857 int res = REAL(tcgetattr)(fd, termios_p); 3858 if (!res && termios_p) 3859 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz); 3860 return res; 3861} 3862 3863#define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr); 3864#else 3865#define INIT_TCGETATTR 3866#endif 3867 3868#if SANITIZER_INTERCEPT_REALPATH 3869INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) { 3870 void *ctx; 3871 COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path); 3872 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 3873 3874 // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest 3875 // version of a versioned symbol. For realpath(), this gives us something 3876 // (called __old_realpath) that does not handle NULL in the second argument. 3877 // Handle it as part of the interceptor. 3878 char *allocated_path = nullptr; 3879 if (!resolved_path) 3880 allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1); 3881 3882 char *res = REAL(realpath)(path, resolved_path); 3883 if (allocated_path && !res) 3884 WRAP(free)(allocated_path); 3885 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 3886 return res; 3887} 3888# define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath); 3889#else 3890#define INIT_REALPATH 3891#endif 3892 3893#if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME 3894INTERCEPTOR(char *, canonicalize_file_name, const char *path) { 3895 void *ctx; 3896 COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path); 3897 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 3898 char *res = REAL(canonicalize_file_name)(path); 3899 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 3900 return res; 3901} 3902#define INIT_CANONICALIZE_FILE_NAME \ 3903 COMMON_INTERCEPT_FUNCTION(canonicalize_file_name); 3904#else 3905#define INIT_CANONICALIZE_FILE_NAME 3906#endif 3907 3908#if SANITIZER_INTERCEPT_CONFSTR 3909INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) { 3910 void *ctx; 3911 COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len); 3912 // FIXME: under ASan the call below may write to freed memory and corrupt 3913 // its metadata. See 3914 // https://github.com/google/sanitizers/issues/321. 3915 SIZE_T res = REAL(confstr)(name, buf, len); 3916 if (buf && res) 3917 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len); 3918 return res; 3919} 3920#define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr); 3921#else 3922#define INIT_CONFSTR 3923#endif 3924 3925#if SANITIZER_INTERCEPT_SCHED_GETAFFINITY 3926INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) { 3927 void *ctx; 3928 COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask); 3929 // FIXME: under ASan the call below may write to freed memory and corrupt 3930 // its metadata. See 3931 // https://github.com/google/sanitizers/issues/321. 3932 int res = REAL(sched_getaffinity)(pid, cpusetsize, mask); 3933 if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize); 3934 return res; 3935} 3936#define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity); 3937#else 3938#define INIT_SCHED_GETAFFINITY 3939#endif 3940 3941#if SANITIZER_INTERCEPT_SCHED_GETPARAM 3942INTERCEPTOR(int, sched_getparam, int pid, void *param) { 3943 void *ctx; 3944 COMMON_INTERCEPTOR_ENTER(ctx, sched_getparam, pid, param); 3945 int res = REAL(sched_getparam)(pid, param); 3946 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, struct_sched_param_sz); 3947 return res; 3948} 3949#define INIT_SCHED_GETPARAM COMMON_INTERCEPT_FUNCTION(sched_getparam); 3950#else 3951#define INIT_SCHED_GETPARAM 3952#endif 3953 3954#if SANITIZER_INTERCEPT_STRERROR 3955INTERCEPTOR(char *, strerror, int errnum) { 3956 void *ctx; 3957 COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum); 3958 COMMON_INTERCEPTOR_STRERROR(); 3959 char *res = REAL(strerror)(errnum); 3960 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 3961 return res; 3962} 3963#define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror); 3964#else 3965#define INIT_STRERROR 3966#endif 3967 3968#if SANITIZER_INTERCEPT_STRERROR_R 3969// There are 2 versions of strerror_r: 3970// * POSIX version returns 0 on success, negative error code on failure, 3971// writes message to buf. 3972// * GNU version returns message pointer, which points to either buf or some 3973// static storage. 3974#if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE) || \ 3975 SANITIZER_APPLE || SANITIZER_ANDROID || SANITIZER_NETBSD || \ 3976 SANITIZER_FREEBSD 3977// POSIX version. Spec is not clear on whether buf is NULL-terminated. 3978// At least on OSX, buf contents are valid even when the call fails. 3979INTERCEPTOR(int, strerror_r, int errnum, char *buf, SIZE_T buflen) { 3980 void *ctx; 3981 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen); 3982 // FIXME: under ASan the call below may write to freed memory and corrupt 3983 // its metadata. See 3984 // https://github.com/google/sanitizers/issues/321. 3985 int res = REAL(strerror_r)(errnum, buf, buflen); 3986 3987 SIZE_T sz = internal_strnlen(buf, buflen); 3988 if (sz < buflen) ++sz; 3989 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz); 3990 return res; 3991} 3992#else 3993// GNU version. 3994INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) { 3995 void *ctx; 3996 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen); 3997 // FIXME: under ASan the call below may write to freed memory and corrupt 3998 // its metadata. See 3999 // https://github.com/google/sanitizers/issues/321. 4000 char *res = REAL(strerror_r)(errnum, buf, buflen); 4001 if (res == buf) 4002 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 4003 else 4004 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 4005 return res; 4006} 4007#endif //(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE || 4008 //SANITIZER_APPLE 4009#define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r); 4010#else 4011#define INIT_STRERROR_R 4012#endif 4013 4014#if SANITIZER_INTERCEPT_XPG_STRERROR_R 4015INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) { 4016 void *ctx; 4017 COMMON_INTERCEPTOR_ENTER(ctx, __xpg_strerror_r, errnum, buf, buflen); 4018 // FIXME: under ASan the call below may write to freed memory and corrupt 4019 // its metadata. See 4020 // https://github.com/google/sanitizers/issues/321. 4021 int res = REAL(__xpg_strerror_r)(errnum, buf, buflen); 4022 // This version always returns a null-terminated string. 4023 if (buf && buflen) 4024 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1); 4025 return res; 4026} 4027#define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r); 4028#else 4029#define INIT_XPG_STRERROR_R 4030#endif 4031 4032#if SANITIZER_INTERCEPT_SCANDIR 4033typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *); 4034typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **, 4035 const struct __sanitizer_dirent **); 4036 4037static THREADLOCAL scandir_filter_f scandir_filter; 4038static THREADLOCAL scandir_compar_f scandir_compar; 4039 4040static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) { 4041 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 4042 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, dir->d_reclen); 4043 return scandir_filter(dir); 4044} 4045 4046static int wrapped_scandir_compar(const struct __sanitizer_dirent **a, 4047 const struct __sanitizer_dirent **b) { 4048 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 4049 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a)); 4050 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, (*a)->d_reclen); 4051 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b)); 4052 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, (*b)->d_reclen); 4053 return scandir_compar(a, b); 4054} 4055 4056INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist, 4057 scandir_filter_f filter, scandir_compar_f compar) { 4058 void *ctx; 4059 COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar); 4060 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1); 4061 scandir_filter = filter; 4062 scandir_compar = compar; 4063 // FIXME: under ASan the call below may write to freed memory and corrupt 4064 // its metadata. See 4065 // https://github.com/google/sanitizers/issues/321. 4066 int res = REAL(scandir)(dirp, namelist, 4067 filter ? wrapped_scandir_filter : nullptr, 4068 compar ? wrapped_scandir_compar : nullptr); 4069 scandir_filter = nullptr; 4070 scandir_compar = nullptr; 4071 if (namelist && res > 0) { 4072 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist)); 4073 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res); 4074 for (int i = 0; i < res; ++i) 4075 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i], 4076 (*namelist)[i]->d_reclen); 4077 } 4078 return res; 4079} 4080#define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir); 4081#else 4082#define INIT_SCANDIR 4083#endif 4084 4085#if SANITIZER_INTERCEPT_SCANDIR64 4086typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *); 4087typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **, 4088 const struct __sanitizer_dirent64 **); 4089 4090static THREADLOCAL scandir64_filter_f scandir64_filter; 4091static THREADLOCAL scandir64_compar_f scandir64_compar; 4092 4093static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) { 4094 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 4095 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, dir->d_reclen); 4096 return scandir64_filter(dir); 4097} 4098 4099static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a, 4100 const struct __sanitizer_dirent64 **b) { 4101 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 4102 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a)); 4103 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, (*a)->d_reclen); 4104 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b)); 4105 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, (*b)->d_reclen); 4106 return scandir64_compar(a, b); 4107} 4108 4109INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist, 4110 scandir64_filter_f filter, scandir64_compar_f compar) { 4111 void *ctx; 4112 COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar); 4113 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1); 4114 scandir64_filter = filter; 4115 scandir64_compar = compar; 4116 // FIXME: under ASan the call below may write to freed memory and corrupt 4117 // its metadata. See 4118 // https://github.com/google/sanitizers/issues/321. 4119 int res = 4120 REAL(scandir64)(dirp, namelist, 4121 filter ? wrapped_scandir64_filter : nullptr, 4122 compar ? wrapped_scandir64_compar : nullptr); 4123 scandir64_filter = nullptr; 4124 scandir64_compar = nullptr; 4125 if (namelist && res > 0) { 4126 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist)); 4127 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res); 4128 for (int i = 0; i < res; ++i) 4129 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i], 4130 (*namelist)[i]->d_reclen); 4131 } 4132 return res; 4133} 4134#define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64); 4135#else 4136#define INIT_SCANDIR64 4137#endif 4138 4139#if SANITIZER_INTERCEPT_GETGROUPS 4140INTERCEPTOR(int, getgroups, int size, u32 *lst) { 4141 void *ctx; 4142 COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst); 4143 // FIXME: under ASan the call below may write to freed memory and corrupt 4144 // its metadata. See 4145 // https://github.com/google/sanitizers/issues/321. 4146 int res = REAL(getgroups)(size, lst); 4147 if (res >= 0 && lst && size > 0) 4148 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst)); 4149 return res; 4150} 4151#define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups); 4152#else 4153#define INIT_GETGROUPS 4154#endif 4155 4156#if SANITIZER_INTERCEPT_POLL 4157static void read_pollfd(void *ctx, __sanitizer_pollfd *fds, 4158 __sanitizer_nfds_t nfds) { 4159 for (unsigned i = 0; i < nfds; ++i) { 4160 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd)); 4161 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events)); 4162 } 4163} 4164 4165static void write_pollfd(void *ctx, __sanitizer_pollfd *fds, 4166 __sanitizer_nfds_t nfds) { 4167 for (unsigned i = 0; i < nfds; ++i) 4168 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents, 4169 sizeof(fds[i].revents)); 4170} 4171 4172INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds, 4173 int timeout) { 4174 void *ctx; 4175 COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout); 4176 if (fds && nfds) read_pollfd(ctx, fds, nfds); 4177 int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout); 4178 if (fds && nfds) write_pollfd(ctx, fds, nfds); 4179 return res; 4180} 4181#define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll); 4182#else 4183#define INIT_POLL 4184#endif 4185 4186#if SANITIZER_INTERCEPT_PPOLL 4187INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds, 4188 void *timeout_ts, __sanitizer_sigset_t *sigmask) { 4189 void *ctx; 4190 COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask); 4191 if (fds && nfds) read_pollfd(ctx, fds, nfds); 4192 if (timeout_ts) 4193 COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz); 4194 if (sigmask) COMMON_INTERCEPTOR_READ_RANGE(ctx, sigmask, sizeof(*sigmask)); 4195 int res = 4196 COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask); 4197 if (fds && nfds) write_pollfd(ctx, fds, nfds); 4198 return res; 4199} 4200#define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll); 4201#else 4202#define INIT_PPOLL 4203#endif 4204 4205#if SANITIZER_INTERCEPT_WORDEXP 4206INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) { 4207 void *ctx; 4208 COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags); 4209 if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); 4210 // FIXME: under ASan the call below may write to freed memory and corrupt 4211 // its metadata. See 4212 // https://github.com/google/sanitizers/issues/321. 4213 int res = REAL(wordexp)(s, p, flags); 4214 if (!res && p) { 4215 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 4216 uptr we_wordc = 4217 ((flags & wordexp_wrde_dooffs) ? p->we_offs : 0) + p->we_wordc; 4218 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv, 4219 sizeof(*p->we_wordv) * (we_wordc + 1)); 4220 for (uptr i = 0; i < we_wordc; ++i) { 4221 char *w = p->we_wordv[i]; 4222 if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, internal_strlen(w) + 1); 4223 } 4224 } 4225 return res; 4226} 4227#define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp); 4228#else 4229#define INIT_WORDEXP 4230#endif 4231 4232#if SANITIZER_INTERCEPT_SIGWAIT 4233INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) { 4234 void *ctx; 4235 COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig); 4236 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 4237 // FIXME: under ASan the call below may write to freed memory and corrupt 4238 // its metadata. See 4239 // https://github.com/google/sanitizers/issues/321. 4240 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwait)(set, sig); 4241 if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig)); 4242 return res; 4243} 4244#define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait); 4245#else 4246#define INIT_SIGWAIT 4247#endif 4248 4249#if SANITIZER_INTERCEPT_SIGWAITINFO 4250INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) { 4251 void *ctx; 4252 COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info); 4253 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 4254 // FIXME: under ASan the call below may write to freed memory and corrupt 4255 // its metadata. See 4256 // https://github.com/google/sanitizers/issues/321. 4257 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwaitinfo)(set, info); 4258 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz); 4259 return res; 4260} 4261#define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo); 4262#else 4263#define INIT_SIGWAITINFO 4264#endif 4265 4266#if SANITIZER_INTERCEPT_SIGTIMEDWAIT 4267INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info, 4268 void *timeout) { 4269 void *ctx; 4270 COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout); 4271 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz); 4272 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 4273 // FIXME: under ASan the call below may write to freed memory and corrupt 4274 // its metadata. See 4275 // https://github.com/google/sanitizers/issues/321. 4276 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigtimedwait)(set, info, timeout); 4277 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz); 4278 return res; 4279} 4280#define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait); 4281#else 4282#define INIT_SIGTIMEDWAIT 4283#endif 4284 4285#if SANITIZER_INTERCEPT_SIGSETOPS 4286INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) { 4287 void *ctx; 4288 COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set); 4289 // FIXME: under ASan the call below may write to freed memory and corrupt 4290 // its metadata. See 4291 // https://github.com/google/sanitizers/issues/321. 4292 int res = REAL(sigemptyset)(set); 4293 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); 4294 return res; 4295} 4296 4297INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) { 4298 void *ctx; 4299 COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set); 4300 // FIXME: under ASan the call below may write to freed memory and corrupt 4301 // its metadata. See 4302 // https://github.com/google/sanitizers/issues/321. 4303 int res = REAL(sigfillset)(set); 4304 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); 4305 return res; 4306} 4307#define INIT_SIGSETOPS \ 4308 COMMON_INTERCEPT_FUNCTION(sigemptyset); \ 4309 COMMON_INTERCEPT_FUNCTION(sigfillset); 4310#else 4311#define INIT_SIGSETOPS 4312#endif 4313 4314#if SANITIZER_INTERCEPT_SIGSET_LOGICOPS 4315INTERCEPTOR(int, sigandset, __sanitizer_sigset_t *dst, 4316 __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) { 4317 void *ctx; 4318 COMMON_INTERCEPTOR_ENTER(ctx, sigandset, dst, src1, src2); 4319 if (src1) 4320 COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1)); 4321 if (src2) 4322 COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2)); 4323 int res = REAL(sigandset)(dst, src1, src2); 4324 if (!res && dst) 4325 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); 4326 return res; 4327} 4328 4329INTERCEPTOR(int, sigorset, __sanitizer_sigset_t *dst, 4330 __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) { 4331 void *ctx; 4332 COMMON_INTERCEPTOR_ENTER(ctx, sigorset, dst, src1, src2); 4333 if (src1) 4334 COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1)); 4335 if (src2) 4336 COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2)); 4337 int res = REAL(sigorset)(dst, src1, src2); 4338 if (!res && dst) 4339 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); 4340 return res; 4341} 4342#define INIT_SIGSET_LOGICOPS \ 4343 COMMON_INTERCEPT_FUNCTION(sigandset); \ 4344 COMMON_INTERCEPT_FUNCTION(sigorset); 4345#else 4346#define INIT_SIGSET_LOGICOPS 4347#endif 4348 4349#if SANITIZER_INTERCEPT_SIGPENDING 4350INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) { 4351 void *ctx; 4352 COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set); 4353 // FIXME: under ASan the call below may write to freed memory and corrupt 4354 // its metadata. See 4355 // https://github.com/google/sanitizers/issues/321. 4356 int res = REAL(sigpending)(set); 4357 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); 4358 return res; 4359} 4360#define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending); 4361#else 4362#define INIT_SIGPENDING 4363#endif 4364 4365#if SANITIZER_INTERCEPT_SIGPROCMASK 4366INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set, 4367 __sanitizer_sigset_t *oldset) { 4368 void *ctx; 4369 COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset); 4370 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 4371 // FIXME: under ASan the call below may write to freed memory and corrupt 4372 // its metadata. See 4373 // https://github.com/google/sanitizers/issues/321. 4374 int res = REAL(sigprocmask)(how, set, oldset); 4375 if (!res && oldset) 4376 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset)); 4377 return res; 4378} 4379#define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask); 4380#else 4381#define INIT_SIGPROCMASK 4382#endif 4383 4384#if SANITIZER_INTERCEPT_PTHREAD_SIGMASK 4385INTERCEPTOR(int, pthread_sigmask, int how, __sanitizer_sigset_t *set, 4386 __sanitizer_sigset_t *oldset) { 4387 void *ctx; 4388 COMMON_INTERCEPTOR_ENTER(ctx, pthread_sigmask, how, set, oldset); 4389 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 4390 // FIXME: under ASan the call below may write to freed memory and corrupt 4391 // its metadata. See 4392 // https://github.com/google/sanitizers/issues/321. 4393 int res = REAL(pthread_sigmask)(how, set, oldset); 4394 if (!res && oldset) 4395 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset)); 4396 return res; 4397} 4398#define INIT_PTHREAD_SIGMASK COMMON_INTERCEPT_FUNCTION(pthread_sigmask); 4399#else 4400#define INIT_PTHREAD_SIGMASK 4401#endif 4402 4403#if SANITIZER_INTERCEPT_BACKTRACE 4404INTERCEPTOR(int, backtrace, void **buffer, int size) { 4405 void *ctx; 4406 COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size); 4407 // FIXME: under ASan the call below may write to freed memory and corrupt 4408 // its metadata. See 4409 // https://github.com/google/sanitizers/issues/321. 4410 int res = REAL(backtrace)(buffer, size); 4411 if (res && buffer) 4412 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer)); 4413 return res; 4414} 4415 4416INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) { 4417 void *ctx; 4418 COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size); 4419 if (buffer && size) 4420 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer)); 4421 // FIXME: under ASan the call below may write to freed memory and corrupt 4422 // its metadata. See 4423 // https://github.com/google/sanitizers/issues/321. 4424 char **res = REAL(backtrace_symbols)(buffer, size); 4425 if (res && size) { 4426 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res)); 4427 for (int i = 0; i < size; ++i) 4428 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], internal_strlen(res[i]) + 1); 4429 } 4430 return res; 4431} 4432#define INIT_BACKTRACE \ 4433 COMMON_INTERCEPT_FUNCTION(backtrace); \ 4434 COMMON_INTERCEPT_FUNCTION(backtrace_symbols); 4435#else 4436#define INIT_BACKTRACE 4437#endif 4438 4439#if SANITIZER_INTERCEPT__EXIT 4440INTERCEPTOR(void, _exit, int status) { 4441 void *ctx; 4442 COMMON_INTERCEPTOR_ENTER(ctx, _exit, status); 4443 COMMON_INTERCEPTOR_USER_CALLBACK_START(); 4444 int status1 = COMMON_INTERCEPTOR_ON_EXIT(ctx); 4445 COMMON_INTERCEPTOR_USER_CALLBACK_END(); 4446 if (status == 0) status = status1; 4447 REAL(_exit)(status); 4448} 4449#define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit); 4450#else 4451#define INIT__EXIT 4452#endif 4453 4454#if SANITIZER_INTERCEPT_PTHREAD_MUTEX 4455INTERCEPTOR(int, pthread_mutex_lock, void *m) { 4456 void *ctx; 4457 COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_lock, m); 4458 COMMON_INTERCEPTOR_MUTEX_PRE_LOCK(ctx, m); 4459 int res = REAL(pthread_mutex_lock)(m); 4460 if (res == errno_EOWNERDEAD) 4461 COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m); 4462 if (res == 0 || res == errno_EOWNERDEAD) 4463 COMMON_INTERCEPTOR_MUTEX_POST_LOCK(ctx, m); 4464 if (res == errno_EINVAL) 4465 COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m); 4466 return res; 4467} 4468 4469INTERCEPTOR(int, pthread_mutex_unlock, void *m) { 4470 void *ctx; 4471 COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_unlock, m); 4472 COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m); 4473 int res = REAL(pthread_mutex_unlock)(m); 4474 if (res == errno_EINVAL) 4475 COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m); 4476 return res; 4477} 4478 4479#define INIT_PTHREAD_MUTEX_LOCK COMMON_INTERCEPT_FUNCTION(pthread_mutex_lock) 4480#define INIT_PTHREAD_MUTEX_UNLOCK \ 4481 COMMON_INTERCEPT_FUNCTION(pthread_mutex_unlock) 4482#else 4483#define INIT_PTHREAD_MUTEX_LOCK 4484#define INIT_PTHREAD_MUTEX_UNLOCK 4485#endif 4486 4487#if SANITIZER_INTERCEPT___PTHREAD_MUTEX 4488INTERCEPTOR(int, __pthread_mutex_lock, void *m) { 4489 void *ctx; 4490 COMMON_INTERCEPTOR_ENTER(ctx, __pthread_mutex_lock, m); 4491 COMMON_INTERCEPTOR_MUTEX_PRE_LOCK(ctx, m); 4492 int res = REAL(__pthread_mutex_lock)(m); 4493 if (res == errno_EOWNERDEAD) 4494 COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m); 4495 if (res == 0 || res == errno_EOWNERDEAD) 4496 COMMON_INTERCEPTOR_MUTEX_POST_LOCK(ctx, m); 4497 if (res == errno_EINVAL) 4498 COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m); 4499 return res; 4500} 4501 4502INTERCEPTOR(int, __pthread_mutex_unlock, void *m) { 4503 void *ctx; 4504 COMMON_INTERCEPTOR_ENTER(ctx, __pthread_mutex_unlock, m); 4505 COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m); 4506 int res = REAL(__pthread_mutex_unlock)(m); 4507 if (res == errno_EINVAL) 4508 COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m); 4509 return res; 4510} 4511 4512#define INIT___PTHREAD_MUTEX_LOCK \ 4513 COMMON_INTERCEPT_FUNCTION(__pthread_mutex_lock) 4514#define INIT___PTHREAD_MUTEX_UNLOCK \ 4515 COMMON_INTERCEPT_FUNCTION(__pthread_mutex_unlock) 4516#else 4517#define INIT___PTHREAD_MUTEX_LOCK 4518#define INIT___PTHREAD_MUTEX_UNLOCK 4519#endif 4520 4521#if SANITIZER_INTERCEPT___LIBC_MUTEX 4522INTERCEPTOR(int, __libc_mutex_lock, void *m) 4523ALIAS(WRAPPER_NAME(pthread_mutex_lock)); 4524 4525INTERCEPTOR(int, __libc_mutex_unlock, void *m) 4526ALIAS(WRAPPER_NAME(pthread_mutex_unlock)); 4527 4528INTERCEPTOR(int, __libc_thr_setcancelstate, int state, int *oldstate) 4529ALIAS(WRAPPER_NAME(pthread_setcancelstate)); 4530 4531#define INIT___LIBC_MUTEX_LOCK COMMON_INTERCEPT_FUNCTION(__libc_mutex_lock) 4532#define INIT___LIBC_MUTEX_UNLOCK COMMON_INTERCEPT_FUNCTION(__libc_mutex_unlock) 4533#define INIT___LIBC_THR_SETCANCELSTATE \ 4534 COMMON_INTERCEPT_FUNCTION(__libc_thr_setcancelstate) 4535#else 4536#define INIT___LIBC_MUTEX_LOCK 4537#define INIT___LIBC_MUTEX_UNLOCK 4538#define INIT___LIBC_THR_SETCANCELSTATE 4539#endif 4540 4541#if SANITIZER_INTERCEPT_GETMNTENT || SANITIZER_INTERCEPT_GETMNTENT_R 4542static void write_mntent(void *ctx, __sanitizer_mntent *mnt) { 4543 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt, sizeof(*mnt)); 4544 if (mnt->mnt_fsname) 4545 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_fsname, 4546 internal_strlen(mnt->mnt_fsname) + 1); 4547 if (mnt->mnt_dir) 4548 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir, 4549 internal_strlen(mnt->mnt_dir) + 1); 4550 if (mnt->mnt_type) 4551 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type, 4552 internal_strlen(mnt->mnt_type) + 1); 4553 if (mnt->mnt_opts) 4554 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts, 4555 internal_strlen(mnt->mnt_opts) + 1); 4556} 4557#endif 4558 4559#if SANITIZER_INTERCEPT_GETMNTENT 4560INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) { 4561 void *ctx; 4562 COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp); 4563 __sanitizer_mntent *res = REAL(getmntent)(fp); 4564 if (res) write_mntent(ctx, res); 4565 return res; 4566} 4567#define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent); 4568#else 4569#define INIT_GETMNTENT 4570#endif 4571 4572#if SANITIZER_INTERCEPT_GETMNTENT_R 4573INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp, 4574 __sanitizer_mntent *mntbuf, char *buf, int buflen) { 4575 void *ctx; 4576 COMMON_INTERCEPTOR_ENTER(ctx, getmntent_r, fp, mntbuf, buf, buflen); 4577 __sanitizer_mntent *res = REAL(getmntent_r)(fp, mntbuf, buf, buflen); 4578 if (res) write_mntent(ctx, res); 4579 return res; 4580} 4581#define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r); 4582#else 4583#define INIT_GETMNTENT_R 4584#endif 4585 4586#if SANITIZER_INTERCEPT_STATFS 4587INTERCEPTOR(int, statfs, char *path, void *buf) { 4588 void *ctx; 4589 COMMON_INTERCEPTOR_ENTER(ctx, statfs, path, buf); 4590 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 4591 // FIXME: under ASan the call below may write to freed memory and corrupt 4592 // its metadata. See 4593 // https://github.com/google/sanitizers/issues/321. 4594 int res = REAL(statfs)(path, buf); 4595 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz); 4596 return res; 4597} 4598INTERCEPTOR(int, fstatfs, int fd, void *buf) { 4599 void *ctx; 4600 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs, fd, buf); 4601 // FIXME: under ASan the call below may write to freed memory and corrupt 4602 // its metadata. See 4603 // https://github.com/google/sanitizers/issues/321. 4604 int res = REAL(fstatfs)(fd, buf); 4605 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz); 4606 return res; 4607} 4608#define INIT_STATFS \ 4609 COMMON_INTERCEPT_FUNCTION(statfs); \ 4610 COMMON_INTERCEPT_FUNCTION(fstatfs); 4611#else 4612#define INIT_STATFS 4613#endif 4614 4615#if SANITIZER_INTERCEPT_STATFS64 4616INTERCEPTOR(int, statfs64, char *path, void *buf) { 4617 void *ctx; 4618 COMMON_INTERCEPTOR_ENTER(ctx, statfs64, path, buf); 4619 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 4620 // FIXME: under ASan the call below may write to freed memory and corrupt 4621 // its metadata. See 4622 // https://github.com/google/sanitizers/issues/321. 4623 int res = REAL(statfs64)(path, buf); 4624 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz); 4625 return res; 4626} 4627INTERCEPTOR(int, fstatfs64, int fd, void *buf) { 4628 void *ctx; 4629 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs64, fd, buf); 4630 // FIXME: under ASan the call below may write to freed memory and corrupt 4631 // its metadata. See 4632 // https://github.com/google/sanitizers/issues/321. 4633 int res = REAL(fstatfs64)(fd, buf); 4634 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz); 4635 return res; 4636} 4637#define INIT_STATFS64 \ 4638 COMMON_INTERCEPT_FUNCTION(statfs64); \ 4639 COMMON_INTERCEPT_FUNCTION(fstatfs64); 4640#else 4641#define INIT_STATFS64 4642#endif 4643 4644#if SANITIZER_INTERCEPT_STATVFS 4645INTERCEPTOR(int, statvfs, char *path, void *buf) { 4646 void *ctx; 4647 COMMON_INTERCEPTOR_ENTER(ctx, statvfs, path, buf); 4648 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 4649 // FIXME: under ASan the call below may write to freed memory and corrupt 4650 // its metadata. See 4651 // https://github.com/google/sanitizers/issues/321. 4652 int res = REAL(statvfs)(path, buf); 4653 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 4654 return res; 4655} 4656INTERCEPTOR(int, fstatvfs, int fd, void *buf) { 4657 void *ctx; 4658 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf); 4659 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 4660 // FIXME: under ASan the call below may write to freed memory and corrupt 4661 // its metadata. See 4662 // https://github.com/google/sanitizers/issues/321. 4663 int res = REAL(fstatvfs)(fd, buf); 4664 if (!res) { 4665 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 4666 if (fd >= 0) 4667 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 4668 } 4669 return res; 4670} 4671#define INIT_STATVFS \ 4672 COMMON_INTERCEPT_FUNCTION(statvfs); \ 4673 COMMON_INTERCEPT_FUNCTION(fstatvfs); 4674#else 4675#define INIT_STATVFS 4676#endif 4677 4678#if SANITIZER_INTERCEPT_STATVFS64 4679INTERCEPTOR(int, statvfs64, char *path, void *buf) { 4680 void *ctx; 4681 COMMON_INTERCEPTOR_ENTER(ctx, statvfs64, path, buf); 4682 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 4683 // FIXME: under ASan the call below may write to freed memory and corrupt 4684 // its metadata. See 4685 // https://github.com/google/sanitizers/issues/321. 4686 int res = REAL(statvfs64)(path, buf); 4687 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz); 4688 return res; 4689} 4690INTERCEPTOR(int, fstatvfs64, int fd, void *buf) { 4691 void *ctx; 4692 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs64, fd, buf); 4693 // FIXME: under ASan the call below may write to freed memory and corrupt 4694 // its metadata. See 4695 // https://github.com/google/sanitizers/issues/321. 4696 int res = REAL(fstatvfs64)(fd, buf); 4697 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz); 4698 return res; 4699} 4700#define INIT_STATVFS64 \ 4701 COMMON_INTERCEPT_FUNCTION(statvfs64); \ 4702 COMMON_INTERCEPT_FUNCTION(fstatvfs64); 4703#else 4704#define INIT_STATVFS64 4705#endif 4706 4707#if SANITIZER_INTERCEPT_INITGROUPS 4708INTERCEPTOR(int, initgroups, char *user, u32 group) { 4709 void *ctx; 4710 COMMON_INTERCEPTOR_ENTER(ctx, initgroups, user, group); 4711 if (user) COMMON_INTERCEPTOR_READ_RANGE(ctx, user, internal_strlen(user) + 1); 4712 int res = REAL(initgroups)(user, group); 4713 return res; 4714} 4715#define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups); 4716#else 4717#define INIT_INITGROUPS 4718#endif 4719 4720#if SANITIZER_INTERCEPT_ETHER_NTOA_ATON 4721INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) { 4722 void *ctx; 4723 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa, addr); 4724 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); 4725 char *res = REAL(ether_ntoa)(addr); 4726 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 4727 return res; 4728} 4729INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) { 4730 void *ctx; 4731 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton, buf); 4732 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1); 4733 __sanitizer_ether_addr *res = REAL(ether_aton)(buf); 4734 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, sizeof(*res)); 4735 return res; 4736} 4737#define INIT_ETHER_NTOA_ATON \ 4738 COMMON_INTERCEPT_FUNCTION(ether_ntoa); \ 4739 COMMON_INTERCEPT_FUNCTION(ether_aton); 4740#else 4741#define INIT_ETHER_NTOA_ATON 4742#endif 4743 4744#if SANITIZER_INTERCEPT_ETHER_HOST 4745INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) { 4746 void *ctx; 4747 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntohost, hostname, addr); 4748 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); 4749 // FIXME: under ASan the call below may write to freed memory and corrupt 4750 // its metadata. See 4751 // https://github.com/google/sanitizers/issues/321. 4752 int res = REAL(ether_ntohost)(hostname, addr); 4753 if (!res && hostname) 4754 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1); 4755 return res; 4756} 4757INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) { 4758 void *ctx; 4759 COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr); 4760 if (hostname) 4761 COMMON_INTERCEPTOR_READ_RANGE(ctx, hostname, internal_strlen(hostname) + 1); 4762 // FIXME: under ASan the call below may write to freed memory and corrupt 4763 // its metadata. See 4764 // https://github.com/google/sanitizers/issues/321. 4765 int res = REAL(ether_hostton)(hostname, addr); 4766 if (!res && addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); 4767 return res; 4768} 4769INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr, 4770 char *hostname) { 4771 void *ctx; 4772 COMMON_INTERCEPTOR_ENTER(ctx, ether_line, line, addr, hostname); 4773 if (line) COMMON_INTERCEPTOR_READ_RANGE(ctx, line, internal_strlen(line) + 1); 4774 // FIXME: under ASan the call below may write to freed memory and corrupt 4775 // its metadata. See 4776 // https://github.com/google/sanitizers/issues/321. 4777 int res = REAL(ether_line)(line, addr, hostname); 4778 if (!res) { 4779 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); 4780 if (hostname) 4781 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1); 4782 } 4783 return res; 4784} 4785#define INIT_ETHER_HOST \ 4786 COMMON_INTERCEPT_FUNCTION(ether_ntohost); \ 4787 COMMON_INTERCEPT_FUNCTION(ether_hostton); \ 4788 COMMON_INTERCEPT_FUNCTION(ether_line); 4789#else 4790#define INIT_ETHER_HOST 4791#endif 4792 4793#if SANITIZER_INTERCEPT_ETHER_R 4794INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) { 4795 void *ctx; 4796 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa_r, addr, buf); 4797 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); 4798 // FIXME: under ASan the call below may write to freed memory and corrupt 4799 // its metadata. See 4800 // https://github.com/google/sanitizers/issues/321. 4801 char *res = REAL(ether_ntoa_r)(addr, buf); 4802 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 4803 return res; 4804} 4805INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf, 4806 __sanitizer_ether_addr *addr) { 4807 void *ctx; 4808 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton_r, buf, addr); 4809 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1); 4810 // FIXME: under ASan the call below may write to freed memory and corrupt 4811 // its metadata. See 4812 // https://github.com/google/sanitizers/issues/321. 4813 __sanitizer_ether_addr *res = REAL(ether_aton_r)(buf, addr); 4814 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(*res)); 4815 return res; 4816} 4817#define INIT_ETHER_R \ 4818 COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \ 4819 COMMON_INTERCEPT_FUNCTION(ether_aton_r); 4820#else 4821#define INIT_ETHER_R 4822#endif 4823 4824#if SANITIZER_INTERCEPT_SHMCTL 4825INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) { 4826 void *ctx; 4827 COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf); 4828 // FIXME: under ASan the call below may write to freed memory and corrupt 4829 // its metadata. See 4830 // https://github.com/google/sanitizers/issues/321. 4831 int res = REAL(shmctl)(shmid, cmd, buf); 4832 if (res >= 0) { 4833 unsigned sz = 0; 4834 if (cmd == shmctl_ipc_stat || cmd == shmctl_shm_stat) 4835 sz = sizeof(__sanitizer_shmid_ds); 4836 else if (cmd == shmctl_ipc_info) 4837 sz = struct_shminfo_sz; 4838 else if (cmd == shmctl_shm_info) 4839 sz = struct_shm_info_sz; 4840 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz); 4841 } 4842 return res; 4843} 4844#define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl); 4845#else 4846#define INIT_SHMCTL 4847#endif 4848 4849#if SANITIZER_INTERCEPT_RANDOM_R 4850INTERCEPTOR(int, random_r, void *buf, u32 *result) { 4851 void *ctx; 4852 COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result); 4853 // FIXME: under ASan the call below may write to freed memory and corrupt 4854 // its metadata. See 4855 // https://github.com/google/sanitizers/issues/321. 4856 int res = REAL(random_r)(buf, result); 4857 if (!res && result) 4858 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 4859 return res; 4860} 4861#define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r); 4862#else 4863#define INIT_RANDOM_R 4864#endif 4865 4866// FIXME: under ASan the REAL() call below may write to freed memory and corrupt 4867// its metadata. See 4868// https://github.com/google/sanitizers/issues/321. 4869#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET || \ 4870 SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED || \ 4871 SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSSCHED || \ 4872 SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GET || \ 4873 SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GET || \ 4874 SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GET || \ 4875 SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GET 4876#define INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(fn, sz) \ 4877 INTERCEPTOR(int, fn, void *attr, void *r) { \ 4878 void *ctx; \ 4879 COMMON_INTERCEPTOR_ENTER(ctx, fn, attr, r); \ 4880 int res = REAL(fn)(attr, r); \ 4881 if (!res && r) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, r, sz); \ 4882 return res; \ 4883 } 4884#define INTERCEPTOR_PTHREAD_ATTR_GET(what, sz) \ 4885 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_attr_get##what, sz) 4886#define INTERCEPTOR_PTHREAD_MUTEXATTR_GET(what, sz) \ 4887 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_mutexattr_get##what, sz) 4888#define INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(what, sz) \ 4889 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_rwlockattr_get##what, sz) 4890#define INTERCEPTOR_PTHREAD_CONDATTR_GET(what, sz) \ 4891 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_condattr_get##what, sz) 4892#define INTERCEPTOR_PTHREAD_BARRIERATTR_GET(what, sz) \ 4893 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_barrierattr_get##what, sz) 4894#endif 4895 4896#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET 4897INTERCEPTOR_PTHREAD_ATTR_GET(detachstate, sizeof(int)) 4898INTERCEPTOR_PTHREAD_ATTR_GET(guardsize, sizeof(SIZE_T)) 4899INTERCEPTOR_PTHREAD_ATTR_GET(scope, sizeof(int)) 4900INTERCEPTOR_PTHREAD_ATTR_GET(stacksize, sizeof(SIZE_T)) 4901INTERCEPTOR(int, pthread_attr_getstack, void *attr, void **addr, SIZE_T *size) { 4902 void *ctx; 4903 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size); 4904 // FIXME: under ASan the call below may write to freed memory and corrupt 4905 // its metadata. See 4906 // https://github.com/google/sanitizers/issues/321. 4907 int res = REAL(pthread_attr_getstack)(attr, addr, size); 4908 if (!res) { 4909 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); 4910 if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size)); 4911 } 4912 return res; 4913} 4914 4915// We may need to call the real pthread_attr_getstack from the run-time 4916// in sanitizer_common, but we don't want to include the interception headers 4917// there. So, just define this function here. 4918namespace __sanitizer { 4919extern "C" { 4920int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) { 4921 return REAL(pthread_attr_getstack)(attr, addr, size); 4922} 4923} // extern "C" 4924} // namespace __sanitizer 4925 4926#define INIT_PTHREAD_ATTR_GET \ 4927 COMMON_INTERCEPT_FUNCTION(pthread_attr_getdetachstate); \ 4928 COMMON_INTERCEPT_FUNCTION(pthread_attr_getguardsize); \ 4929 COMMON_INTERCEPT_FUNCTION(pthread_attr_getscope); \ 4930 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstacksize); \ 4931 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstack); 4932#else 4933#define INIT_PTHREAD_ATTR_GET 4934#endif 4935 4936#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED 4937INTERCEPTOR_PTHREAD_ATTR_GET(schedparam, struct_sched_param_sz) 4938INTERCEPTOR_PTHREAD_ATTR_GET(schedpolicy, sizeof(int)) 4939 4940#define INIT_PTHREAD_ATTR_GET_SCHED \ 4941 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedparam); \ 4942 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedpolicy); 4943#else 4944#define INIT_PTHREAD_ATTR_GET_SCHED 4945#endif 4946 4947#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED 4948INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int)) 4949 4950#define INIT_PTHREAD_ATTR_GETINHERITSCHED \ 4951 COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched); 4952#else 4953#define INIT_PTHREAD_ATTR_GETINHERITSCHED 4954#endif 4955 4956#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP 4957INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize, 4958 void *cpuset) { 4959 void *ctx; 4960 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize, 4961 cpuset); 4962 // FIXME: under ASan the call below may write to freed memory and corrupt 4963 // its metadata. See 4964 // https://github.com/google/sanitizers/issues/321. 4965 int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset); 4966 if (!res && cpusetsize && cpuset) 4967 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize); 4968 return res; 4969} 4970 4971#define INIT_PTHREAD_ATTR_GETAFFINITY_NP \ 4972 COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np); 4973#else 4974#define INIT_PTHREAD_ATTR_GETAFFINITY_NP 4975#endif 4976 4977#if SANITIZER_INTERCEPT_PTHREAD_GETAFFINITY_NP 4978INTERCEPTOR(int, pthread_getaffinity_np, void *attr, SIZE_T cpusetsize, 4979 void *cpuset) { 4980 void *ctx; 4981 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getaffinity_np, attr, cpusetsize, 4982 cpuset); 4983 // FIXME: under ASan the call below may write to freed memory and corrupt 4984 // its metadata. See 4985 // https://github.com/google/sanitizers/issues/321. 4986 int res = REAL(pthread_getaffinity_np)(attr, cpusetsize, cpuset); 4987 if (!res && cpusetsize && cpuset) 4988 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize); 4989 return res; 4990} 4991 4992#define INIT_PTHREAD_GETAFFINITY_NP \ 4993 COMMON_INTERCEPT_FUNCTION(pthread_getaffinity_np); 4994#else 4995#define INIT_PTHREAD_GETAFFINITY_NP 4996#endif 4997 4998#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPSHARED 4999INTERCEPTOR_PTHREAD_MUTEXATTR_GET(pshared, sizeof(int)) 5000#define INIT_PTHREAD_MUTEXATTR_GETPSHARED \ 5001 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getpshared); 5002#else 5003#define INIT_PTHREAD_MUTEXATTR_GETPSHARED 5004#endif 5005 5006#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE 5007INTERCEPTOR_PTHREAD_MUTEXATTR_GET(type, sizeof(int)) 5008#define INIT_PTHREAD_MUTEXATTR_GETTYPE \ 5009 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_gettype); 5010#else 5011#define INIT_PTHREAD_MUTEXATTR_GETTYPE 5012#endif 5013 5014#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPROTOCOL 5015INTERCEPTOR_PTHREAD_MUTEXATTR_GET(protocol, sizeof(int)) 5016#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL \ 5017 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprotocol); 5018#else 5019#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL 5020#endif 5021 5022#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPRIOCEILING 5023INTERCEPTOR_PTHREAD_MUTEXATTR_GET(prioceiling, sizeof(int)) 5024#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING \ 5025 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprioceiling); 5026#else 5027#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING 5028#endif 5029 5030#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST 5031INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust, sizeof(int)) 5032#define INIT_PTHREAD_MUTEXATTR_GETROBUST \ 5033 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust); 5034#else 5035#define INIT_PTHREAD_MUTEXATTR_GETROBUST 5036#endif 5037 5038#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST_NP 5039INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust_np, sizeof(int)) 5040#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP \ 5041 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust_np); 5042#else 5043#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP 5044#endif 5045 5046#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETPSHARED 5047INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(pshared, sizeof(int)) 5048#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED \ 5049 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getpshared); 5050#else 5051#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED 5052#endif 5053 5054#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETKIND_NP 5055INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(kind_np, sizeof(int)) 5056#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP \ 5057 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getkind_np); 5058#else 5059#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP 5060#endif 5061 5062#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETPSHARED 5063INTERCEPTOR_PTHREAD_CONDATTR_GET(pshared, sizeof(int)) 5064#define INIT_PTHREAD_CONDATTR_GETPSHARED \ 5065 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getpshared); 5066#else 5067#define INIT_PTHREAD_CONDATTR_GETPSHARED 5068#endif 5069 5070#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETCLOCK 5071INTERCEPTOR_PTHREAD_CONDATTR_GET(clock, sizeof(int)) 5072#define INIT_PTHREAD_CONDATTR_GETCLOCK \ 5073 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getclock); 5074#else 5075#define INIT_PTHREAD_CONDATTR_GETCLOCK 5076#endif 5077 5078#if SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED 5079INTERCEPTOR_PTHREAD_BARRIERATTR_GET(pshared, sizeof(int)) // !mac !android 5080#define INIT_PTHREAD_BARRIERATTR_GETPSHARED \ 5081 COMMON_INTERCEPT_FUNCTION(pthread_barrierattr_getpshared); 5082#else 5083#define INIT_PTHREAD_BARRIERATTR_GETPSHARED 5084#endif 5085 5086#if SANITIZER_INTERCEPT_TMPNAM 5087INTERCEPTOR(char *, tmpnam, char *s) { 5088 void *ctx; 5089 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s); 5090 char *res = REAL(tmpnam)(s); 5091 if (res) { 5092 if (s) 5093 // FIXME: under ASan the call below may write to freed memory and corrupt 5094 // its metadata. See 5095 // https://github.com/google/sanitizers/issues/321. 5096 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1); 5097 else 5098 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 5099 } 5100 return res; 5101} 5102#define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam); 5103#else 5104#define INIT_TMPNAM 5105#endif 5106 5107#if SANITIZER_INTERCEPT_TMPNAM_R 5108INTERCEPTOR(char *, tmpnam_r, char *s) { 5109 void *ctx; 5110 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam_r, s); 5111 // FIXME: under ASan the call below may write to freed memory and corrupt 5112 // its metadata. See 5113 // https://github.com/google/sanitizers/issues/321. 5114 char *res = REAL(tmpnam_r)(s); 5115 if (res && s) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1); 5116 return res; 5117} 5118#define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r); 5119#else 5120#define INIT_TMPNAM_R 5121#endif 5122 5123#if SANITIZER_INTERCEPT_PTSNAME 5124INTERCEPTOR(char *, ptsname, int fd) { 5125 void *ctx; 5126 COMMON_INTERCEPTOR_ENTER(ctx, ptsname, fd); 5127 char *res = REAL(ptsname)(fd); 5128 if (res != nullptr) 5129 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 5130 return res; 5131} 5132#define INIT_PTSNAME COMMON_INTERCEPT_FUNCTION(ptsname); 5133#else 5134#define INIT_PTSNAME 5135#endif 5136 5137#if SANITIZER_INTERCEPT_PTSNAME_R 5138INTERCEPTOR(int, ptsname_r, int fd, char *name, SIZE_T namesize) { 5139 void *ctx; 5140 COMMON_INTERCEPTOR_ENTER(ctx, ptsname_r, fd, name, namesize); 5141 int res = REAL(ptsname_r)(fd, name, namesize); 5142 if (res == 0) 5143 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); 5144 return res; 5145} 5146#define INIT_PTSNAME_R COMMON_INTERCEPT_FUNCTION(ptsname_r); 5147#else 5148#define INIT_PTSNAME_R 5149#endif 5150 5151#if SANITIZER_INTERCEPT_TTYNAME 5152INTERCEPTOR(char *, ttyname, int fd) { 5153 void *ctx; 5154 COMMON_INTERCEPTOR_ENTER(ctx, ttyname, fd); 5155 char *res = REAL(ttyname)(fd); 5156 if (res != nullptr) 5157 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 5158 return res; 5159} 5160#define INIT_TTYNAME COMMON_INTERCEPT_FUNCTION(ttyname); 5161#else 5162#define INIT_TTYNAME 5163#endif 5164 5165#if SANITIZER_INTERCEPT_TTYNAME_R 5166INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) { 5167 void *ctx; 5168 COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize); 5169 int res = REAL(ttyname_r)(fd, name, namesize); 5170 if (res == 0) 5171 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); 5172 return res; 5173} 5174#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r); 5175#else 5176#define INIT_TTYNAME_R 5177#endif 5178 5179#if SANITIZER_INTERCEPT_TEMPNAM 5180INTERCEPTOR(char *, tempnam, char *dir, char *pfx) { 5181 void *ctx; 5182 COMMON_INTERCEPTOR_ENTER(ctx, tempnam, dir, pfx); 5183 if (dir) COMMON_INTERCEPTOR_READ_RANGE(ctx, dir, internal_strlen(dir) + 1); 5184 if (pfx) COMMON_INTERCEPTOR_READ_RANGE(ctx, pfx, internal_strlen(pfx) + 1); 5185 char *res = REAL(tempnam)(dir, pfx); 5186 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 5187 return res; 5188} 5189#define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam); 5190#else 5191#define INIT_TEMPNAM 5192#endif 5193 5194#if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && !SANITIZER_NETBSD 5195INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) { 5196 void *ctx; 5197 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name); 5198 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0); 5199 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name); 5200 return REAL(pthread_setname_np)(thread, name); 5201} 5202#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np); 5203#elif SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && SANITIZER_NETBSD 5204INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name, void *arg) { 5205 void *ctx; 5206 char newname[32]; // PTHREAD_MAX_NAMELEN_NP=32 5207 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name, arg); 5208 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0); 5209 internal_snprintf(newname, sizeof(newname), name, arg); 5210 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, newname); 5211 return REAL(pthread_setname_np)(thread, name, arg); 5212} 5213#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np); 5214#else 5215#define INIT_PTHREAD_SETNAME_NP 5216#endif 5217 5218#if SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP 5219INTERCEPTOR(int, pthread_getname_np, uptr thread, char *name, SIZE_T len) { 5220 void *ctx; 5221 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getname_np, thread, name, len); 5222 int res = REAL(pthread_getname_np)(thread, name, len); 5223 if (!res) 5224 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strnlen(name, len) + 1); 5225 return res; 5226} 5227#define INIT_PTHREAD_GETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_getname_np); 5228#else 5229#define INIT_PTHREAD_GETNAME_NP 5230#endif 5231 5232#if SANITIZER_INTERCEPT_SINCOS 5233INTERCEPTOR(void, sincos, double x, double *sin, double *cos) { 5234 void *ctx; 5235 COMMON_INTERCEPTOR_ENTER(ctx, sincos, x, sin, cos); 5236 // FIXME: under ASan the call below may write to freed memory and corrupt 5237 // its metadata. See 5238 // https://github.com/google/sanitizers/issues/321. 5239 REAL(sincos)(x, sin, cos); 5240 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); 5241 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); 5242} 5243INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) { 5244 void *ctx; 5245 COMMON_INTERCEPTOR_ENTER(ctx, sincosf, x, sin, cos); 5246 // FIXME: under ASan the call below may write to freed memory and corrupt 5247 // its metadata. See 5248 // https://github.com/google/sanitizers/issues/321. 5249 REAL(sincosf)(x, sin, cos); 5250 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); 5251 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); 5252} 5253INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) { 5254 void *ctx; 5255 COMMON_INTERCEPTOR_ENTER(ctx, sincosl, x, sin, cos); 5256 // FIXME: under ASan the call below may write to freed memory and corrupt 5257 // its metadata. See 5258 // https://github.com/google/sanitizers/issues/321. 5259 REAL(sincosl)(x, sin, cos); 5260 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); 5261 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); 5262} 5263#define INIT_SINCOS \ 5264 COMMON_INTERCEPT_FUNCTION(sincos); \ 5265 COMMON_INTERCEPT_FUNCTION(sincosf); \ 5266 COMMON_INTERCEPT_FUNCTION_LDBL(sincosl); 5267#else 5268#define INIT_SINCOS 5269#endif 5270 5271#if SANITIZER_INTERCEPT_REMQUO 5272INTERCEPTOR(double, remquo, double x, double y, int *quo) { 5273 void *ctx; 5274 COMMON_INTERCEPTOR_ENTER(ctx, remquo, x, y, quo); 5275 // FIXME: under ASan the call below may write to freed memory and corrupt 5276 // its metadata. See 5277 // https://github.com/google/sanitizers/issues/321. 5278 double res = REAL(remquo)(x, y, quo); 5279 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); 5280 return res; 5281} 5282INTERCEPTOR(float, remquof, float x, float y, int *quo) { 5283 void *ctx; 5284 COMMON_INTERCEPTOR_ENTER(ctx, remquof, x, y, quo); 5285 // FIXME: under ASan the call below may write to freed memory and corrupt 5286 // its metadata. See 5287 // https://github.com/google/sanitizers/issues/321. 5288 float res = REAL(remquof)(x, y, quo); 5289 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); 5290 return res; 5291} 5292#define INIT_REMQUO \ 5293 COMMON_INTERCEPT_FUNCTION(remquo); \ 5294 COMMON_INTERCEPT_FUNCTION(remquof); 5295#else 5296#define INIT_REMQUO 5297#endif 5298 5299#if SANITIZER_INTERCEPT_REMQUOL 5300INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) { 5301 void *ctx; 5302 COMMON_INTERCEPTOR_ENTER(ctx, remquol, x, y, quo); 5303 // FIXME: under ASan the call below may write to freed memory and corrupt 5304 // its metadata. See 5305 // https://github.com/google/sanitizers/issues/321. 5306 long double res = REAL(remquol)(x, y, quo); 5307 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); 5308 return res; 5309} 5310#define INIT_REMQUOL \ 5311 COMMON_INTERCEPT_FUNCTION_LDBL(remquol); 5312#else 5313#define INIT_REMQUOL 5314#endif 5315 5316#if SANITIZER_INTERCEPT_LGAMMA 5317extern int signgam; 5318INTERCEPTOR(double, lgamma, double x) { 5319 void *ctx; 5320 COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x); 5321 double res = REAL(lgamma)(x); 5322 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); 5323 return res; 5324} 5325INTERCEPTOR(float, lgammaf, float x) { 5326 void *ctx; 5327 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x); 5328 float res = REAL(lgammaf)(x); 5329 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); 5330 return res; 5331} 5332#define INIT_LGAMMA \ 5333 COMMON_INTERCEPT_FUNCTION(lgamma); \ 5334 COMMON_INTERCEPT_FUNCTION(lgammaf); 5335#else 5336#define INIT_LGAMMA 5337#endif 5338 5339#if SANITIZER_INTERCEPT_LGAMMAL 5340INTERCEPTOR(long double, lgammal, long double x) { 5341 void *ctx; 5342 COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x); 5343 long double res = REAL(lgammal)(x); 5344 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); 5345 return res; 5346} 5347#define INIT_LGAMMAL \ 5348 COMMON_INTERCEPT_FUNCTION_LDBL(lgammal); 5349#else 5350#define INIT_LGAMMAL 5351#endif 5352 5353#if SANITIZER_INTERCEPT_LGAMMA_R 5354INTERCEPTOR(double, lgamma_r, double x, int *signp) { 5355 void *ctx; 5356 COMMON_INTERCEPTOR_ENTER(ctx, lgamma_r, x, signp); 5357 // FIXME: under ASan the call below may write to freed memory and corrupt 5358 // its metadata. See 5359 // https://github.com/google/sanitizers/issues/321. 5360 double res = REAL(lgamma_r)(x, signp); 5361 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); 5362 return res; 5363} 5364INTERCEPTOR(float, lgammaf_r, float x, int *signp) { 5365 void *ctx; 5366 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf_r, x, signp); 5367 // FIXME: under ASan the call below may write to freed memory and corrupt 5368 // its metadata. See 5369 // https://github.com/google/sanitizers/issues/321. 5370 float res = REAL(lgammaf_r)(x, signp); 5371 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); 5372 return res; 5373} 5374#define INIT_LGAMMA_R \ 5375 COMMON_INTERCEPT_FUNCTION(lgamma_r); \ 5376 COMMON_INTERCEPT_FUNCTION(lgammaf_r); 5377#else 5378#define INIT_LGAMMA_R 5379#endif 5380 5381#if SANITIZER_INTERCEPT_LGAMMAL_R 5382INTERCEPTOR(long double, lgammal_r, long double x, int *signp) { 5383 void *ctx; 5384 COMMON_INTERCEPTOR_ENTER(ctx, lgammal_r, x, signp); 5385 // FIXME: under ASan the call below may write to freed memory and corrupt 5386 // its metadata. See 5387 // https://github.com/google/sanitizers/issues/321. 5388 long double res = REAL(lgammal_r)(x, signp); 5389 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); 5390 return res; 5391} 5392#define INIT_LGAMMAL_R COMMON_INTERCEPT_FUNCTION_LDBL(lgammal_r); 5393#else 5394#define INIT_LGAMMAL_R 5395#endif 5396 5397#if SANITIZER_INTERCEPT_DRAND48_R 5398INTERCEPTOR(int, drand48_r, void *buffer, double *result) { 5399 void *ctx; 5400 COMMON_INTERCEPTOR_ENTER(ctx, drand48_r, buffer, result); 5401 // FIXME: under ASan the call below may write to freed memory and corrupt 5402 // its metadata. See 5403 // https://github.com/google/sanitizers/issues/321. 5404 int res = REAL(drand48_r)(buffer, result); 5405 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 5406 return res; 5407} 5408INTERCEPTOR(int, lrand48_r, void *buffer, long *result) { 5409 void *ctx; 5410 COMMON_INTERCEPTOR_ENTER(ctx, lrand48_r, buffer, result); 5411 // FIXME: under ASan the call below may write to freed memory and corrupt 5412 // its metadata. See 5413 // https://github.com/google/sanitizers/issues/321. 5414 int res = REAL(lrand48_r)(buffer, result); 5415 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 5416 return res; 5417} 5418#define INIT_DRAND48_R \ 5419 COMMON_INTERCEPT_FUNCTION(drand48_r); \ 5420 COMMON_INTERCEPT_FUNCTION(lrand48_r); 5421#else 5422#define INIT_DRAND48_R 5423#endif 5424 5425#if SANITIZER_INTERCEPT_RAND_R 5426INTERCEPTOR(int, rand_r, unsigned *seedp) { 5427 void *ctx; 5428 COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp); 5429 COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp)); 5430 return REAL(rand_r)(seedp); 5431} 5432#define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r); 5433#else 5434#define INIT_RAND_R 5435#endif 5436 5437#if SANITIZER_INTERCEPT_GETLINE 5438INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) { 5439 void *ctx; 5440 COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream); 5441 // FIXME: under ASan the call below may write to freed memory and corrupt 5442 // its metadata. See 5443 // https://github.com/google/sanitizers/issues/321. 5444 SSIZE_T res = REAL(getline)(lineptr, n, stream); 5445 if (res > 0) { 5446 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); 5447 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 5448 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); 5449 } 5450 return res; 5451} 5452 5453// FIXME: under ASan the call below may write to freed memory and corrupt its 5454// metadata. See 5455// https://github.com/google/sanitizers/issues/321. 5456#define GETDELIM_INTERCEPTOR_IMPL(vname) \ 5457 { \ 5458 void *ctx; \ 5459 COMMON_INTERCEPTOR_ENTER(ctx, vname, lineptr, n, delim, stream); \ 5460 SSIZE_T res = REAL(vname)(lineptr, n, delim, stream); \ 5461 if (res > 0) { \ 5462 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); \ 5463 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); \ 5464 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); \ 5465 } \ 5466 return res; \ 5467 } 5468 5469INTERCEPTOR(SSIZE_T, __getdelim, char **lineptr, SIZE_T *n, int delim, 5470 void *stream) 5471GETDELIM_INTERCEPTOR_IMPL(__getdelim) 5472 5473// There's no __getdelim() on FreeBSD so we supply the getdelim() interceptor 5474// with its own body. 5475INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim, 5476 void *stream) 5477GETDELIM_INTERCEPTOR_IMPL(getdelim) 5478 5479#define INIT_GETLINE \ 5480 COMMON_INTERCEPT_FUNCTION(getline); \ 5481 COMMON_INTERCEPT_FUNCTION(__getdelim); \ 5482 COMMON_INTERCEPT_FUNCTION(getdelim); 5483#else 5484#define INIT_GETLINE 5485#endif 5486 5487#if SANITIZER_INTERCEPT_ICONV 5488INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft, 5489 char **outbuf, SIZE_T *outbytesleft) { 5490 void *ctx; 5491 COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf, 5492 outbytesleft); 5493 if (inbytesleft) 5494 COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft)); 5495 if (inbuf && inbytesleft) 5496 COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft); 5497 if (outbytesleft) 5498 COMMON_INTERCEPTOR_READ_RANGE(ctx, outbytesleft, sizeof(*outbytesleft)); 5499 void *outbuf_orig = outbuf ? *outbuf : nullptr; 5500 // FIXME: under ASan the call below may write to freed memory and corrupt 5501 // its metadata. See 5502 // https://github.com/google/sanitizers/issues/321. 5503 SIZE_T res = REAL(iconv)(cd, inbuf, inbytesleft, outbuf, outbytesleft); 5504 if (outbuf && *outbuf > outbuf_orig) { 5505 SIZE_T sz = (char *)*outbuf - (char *)outbuf_orig; 5506 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, outbuf_orig, sz); 5507 } 5508 return res; 5509} 5510#define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv); 5511#else 5512#define INIT_ICONV 5513#endif 5514 5515#if SANITIZER_INTERCEPT_TIMES 5516INTERCEPTOR(__sanitizer_clock_t, times, void *tms) { 5517 void *ctx; 5518 COMMON_INTERCEPTOR_ENTER(ctx, times, tms); 5519 // FIXME: under ASan the call below may write to freed memory and corrupt 5520 // its metadata. See 5521 // https://github.com/google/sanitizers/issues/321. 5522 __sanitizer_clock_t res = REAL(times)(tms); 5523 if (res != (__sanitizer_clock_t)-1 && tms) 5524 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tms, struct_tms_sz); 5525 return res; 5526} 5527#define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times); 5528#else 5529#define INIT_TIMES 5530#endif 5531 5532#if SANITIZER_S390 && \ 5533 (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET) 5534extern "C" uptr __tls_get_offset_wrapper(void *arg, uptr (*fn)(void *arg)); 5535DEFINE_REAL(uptr, __tls_get_offset, void *arg) 5536#endif 5537 5538#if SANITIZER_INTERCEPT_TLS_GET_ADDR 5539#if !SANITIZER_S390 5540#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_addr) 5541// If you see any crashes around this functions, there are 2 known issues with 5542// it: 1. __tls_get_addr can be called with mis-aligned stack due to: 5543// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 5544// 2. It can be called recursively if sanitizer code uses __tls_get_addr 5545// to access thread local variables (it should not happen normally, 5546// because sanitizers use initial-exec tls model). 5547INTERCEPTOR(void *, __tls_get_addr, void *arg) { 5548 void *ctx; 5549 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr, arg); 5550 void *res = REAL(__tls_get_addr)(arg); 5551 uptr tls_begin, tls_end; 5552 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end); 5553 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, res, tls_begin, tls_end); 5554 if (dtv) { 5555 // New DTLS block has been allocated. 5556 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size); 5557 } 5558 return res; 5559} 5560#if SANITIZER_PPC 5561// On PowerPC, we also need to intercept __tls_get_addr_opt, which has 5562// mostly the same semantics as __tls_get_addr, but its presence enables 5563// some optimizations in linker (which are safe to ignore here). 5564extern "C" __attribute__((alias("__interceptor___tls_get_addr"), 5565 visibility("default"))) 5566void *__tls_get_addr_opt(void *arg); 5567#endif 5568#else // SANITIZER_S390 5569// On s390, we have to intercept two functions here: 5570// - __tls_get_addr_internal, which is a glibc-internal function that is like 5571// the usual __tls_get_addr, but returns a TP-relative offset instead of 5572// a proper pointer. It is used by dlsym for TLS symbols. 5573// - __tls_get_offset, which is like the above, but also takes a GOT-relative 5574// descriptor offset as an argument instead of a pointer. GOT address 5575// is passed in r12, so it's necessary to write it in assembly. This is 5576// the function used by the compiler. 5577#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_offset) 5578INTERCEPTOR(uptr, __tls_get_addr_internal, void *arg) { 5579 void *ctx; 5580 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr_internal, arg); 5581 uptr res = __tls_get_offset_wrapper(arg, REAL(__tls_get_offset)); 5582 uptr tp = reinterpret_cast<uptr>(__builtin_thread_pointer()); 5583 void *ptr = reinterpret_cast<void *>(res + tp); 5584 uptr tls_begin, tls_end; 5585 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end); 5586 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, ptr, tls_begin, tls_end); 5587 if (dtv) { 5588 // New DTLS block has been allocated. 5589 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size); 5590 } 5591 return res; 5592} 5593#endif // SANITIZER_S390 5594#else 5595#define INIT_TLS_GET_ADDR 5596#endif 5597 5598#if SANITIZER_S390 && \ 5599 (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET) 5600extern "C" uptr __tls_get_offset(void *arg); 5601extern "C" uptr __interceptor___tls_get_offset(void *arg); 5602// We need a hidden symbol aliasing the above, so that we can jump 5603// directly to it from the assembly below. 5604extern "C" __attribute__((alias("__interceptor___tls_get_addr_internal"), 5605 visibility("hidden"))) 5606uptr __tls_get_addr_hidden(void *arg); 5607// Now carefully intercept __tls_get_offset. 5608asm( 5609 ".text\n" 5610// The __intercept_ version has to exist, so that gen_dynamic_list.py 5611// exports our symbol. 5612 ".weak __tls_get_offset\n" 5613 ".type __tls_get_offset, @function\n" 5614 "__tls_get_offset:\n" 5615 ".global __interceptor___tls_get_offset\n" 5616 ".type __interceptor___tls_get_offset, @function\n" 5617 "__interceptor___tls_get_offset:\n" 5618#ifdef __s390x__ 5619 "la %r2, 0(%r2,%r12)\n" 5620 "jg __tls_get_addr_hidden\n" 5621#else 5622 "basr %r3,0\n" 5623 "0: la %r2,0(%r2,%r12)\n" 5624 "l %r4,1f-0b(%r3)\n" 5625 "b 0(%r4,%r3)\n" 5626 "1: .long __tls_get_addr_hidden - 0b\n" 5627#endif 5628 ".size __interceptor___tls_get_offset, .-__interceptor___tls_get_offset\n" 5629// Assembly wrapper to call REAL(__tls_get_offset)(arg) 5630 ".type __tls_get_offset_wrapper, @function\n" 5631 "__tls_get_offset_wrapper:\n" 5632#ifdef __s390x__ 5633 "sgr %r2,%r12\n" 5634#else 5635 "sr %r2,%r12\n" 5636#endif 5637 "br %r3\n" 5638 ".size __tls_get_offset_wrapper, .-__tls_get_offset_wrapper\n" 5639); 5640#endif 5641 5642#if SANITIZER_INTERCEPT_LISTXATTR 5643INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) { 5644 void *ctx; 5645 COMMON_INTERCEPTOR_ENTER(ctx, listxattr, path, list, size); 5646 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 5647 // FIXME: under ASan the call below may write to freed memory and corrupt 5648 // its metadata. See 5649 // https://github.com/google/sanitizers/issues/321. 5650 SSIZE_T res = REAL(listxattr)(path, list, size); 5651 // Here and below, size == 0 is a special case where nothing is written to the 5652 // buffer, and res contains the desired buffer size. 5653 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); 5654 return res; 5655} 5656INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) { 5657 void *ctx; 5658 COMMON_INTERCEPTOR_ENTER(ctx, llistxattr, path, list, size); 5659 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 5660 // FIXME: under ASan the call below may write to freed memory and corrupt 5661 // its metadata. See 5662 // https://github.com/google/sanitizers/issues/321. 5663 SSIZE_T res = REAL(llistxattr)(path, list, size); 5664 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); 5665 return res; 5666} 5667INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) { 5668 void *ctx; 5669 COMMON_INTERCEPTOR_ENTER(ctx, flistxattr, fd, list, size); 5670 // FIXME: under ASan the call below may write to freed memory and corrupt 5671 // its metadata. See 5672 // https://github.com/google/sanitizers/issues/321. 5673 SSIZE_T res = REAL(flistxattr)(fd, list, size); 5674 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); 5675 return res; 5676} 5677#define INIT_LISTXATTR \ 5678 COMMON_INTERCEPT_FUNCTION(listxattr); \ 5679 COMMON_INTERCEPT_FUNCTION(llistxattr); \ 5680 COMMON_INTERCEPT_FUNCTION(flistxattr); 5681#else 5682#define INIT_LISTXATTR 5683#endif 5684 5685#if SANITIZER_INTERCEPT_GETXATTR 5686INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value, 5687 SIZE_T size) { 5688 void *ctx; 5689 COMMON_INTERCEPTOR_ENTER(ctx, getxattr, path, name, value, size); 5690 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 5691 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 5692 // FIXME: under ASan the call below may write to freed memory and corrupt 5693 // its metadata. See 5694 // https://github.com/google/sanitizers/issues/321. 5695 SSIZE_T res = REAL(getxattr)(path, name, value, size); 5696 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); 5697 return res; 5698} 5699INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value, 5700 SIZE_T size) { 5701 void *ctx; 5702 COMMON_INTERCEPTOR_ENTER(ctx, lgetxattr, path, name, value, size); 5703 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 5704 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 5705 // FIXME: under ASan the call below may write to freed memory and corrupt 5706 // its metadata. See 5707 // https://github.com/google/sanitizers/issues/321. 5708 SSIZE_T res = REAL(lgetxattr)(path, name, value, size); 5709 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); 5710 return res; 5711} 5712INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value, 5713 SIZE_T size) { 5714 void *ctx; 5715 COMMON_INTERCEPTOR_ENTER(ctx, fgetxattr, fd, name, value, size); 5716 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 5717 // FIXME: under ASan the call below may write to freed memory and corrupt 5718 // its metadata. See 5719 // https://github.com/google/sanitizers/issues/321. 5720 SSIZE_T res = REAL(fgetxattr)(fd, name, value, size); 5721 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); 5722 return res; 5723} 5724#define INIT_GETXATTR \ 5725 COMMON_INTERCEPT_FUNCTION(getxattr); \ 5726 COMMON_INTERCEPT_FUNCTION(lgetxattr); \ 5727 COMMON_INTERCEPT_FUNCTION(fgetxattr); 5728#else 5729#define INIT_GETXATTR 5730#endif 5731 5732#if SANITIZER_INTERCEPT_GETRESID 5733INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) { 5734 void *ctx; 5735 COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid); 5736 // FIXME: under ASan the call below may write to freed memory and corrupt 5737 // its metadata. See 5738 // https://github.com/google/sanitizers/issues/321. 5739 int res = REAL(getresuid)(ruid, euid, suid); 5740 if (res >= 0) { 5741 if (ruid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ruid, uid_t_sz); 5742 if (euid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, euid, uid_t_sz); 5743 if (suid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, suid, uid_t_sz); 5744 } 5745 return res; 5746} 5747INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) { 5748 void *ctx; 5749 COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid); 5750 // FIXME: under ASan the call below may write to freed memory and corrupt 5751 // its metadata. See 5752 // https://github.com/google/sanitizers/issues/321. 5753 int res = REAL(getresgid)(rgid, egid, sgid); 5754 if (res >= 0) { 5755 if (rgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rgid, gid_t_sz); 5756 if (egid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, egid, gid_t_sz); 5757 if (sgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sgid, gid_t_sz); 5758 } 5759 return res; 5760} 5761#define INIT_GETRESID \ 5762 COMMON_INTERCEPT_FUNCTION(getresuid); \ 5763 COMMON_INTERCEPT_FUNCTION(getresgid); 5764#else 5765#define INIT_GETRESID 5766#endif 5767 5768#if SANITIZER_INTERCEPT_GETIFADDRS 5769// As long as getifaddrs()/freeifaddrs() use calloc()/free(), we don't need to 5770// intercept freeifaddrs(). If that ceases to be the case, we might need to 5771// intercept it to poison the memory again. 5772INTERCEPTOR(int, getifaddrs, __sanitizer_ifaddrs **ifap) { 5773 void *ctx; 5774 COMMON_INTERCEPTOR_ENTER(ctx, getifaddrs, ifap); 5775 // FIXME: under ASan the call below may write to freed memory and corrupt 5776 // its metadata. See 5777 // https://github.com/google/sanitizers/issues/321. 5778 int res = REAL(getifaddrs)(ifap); 5779 if (res == 0 && ifap) { 5780 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifap, sizeof(void *)); 5781 __sanitizer_ifaddrs *p = *ifap; 5782 while (p) { 5783 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs)); 5784 if (p->ifa_name) 5785 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name, 5786 internal_strlen(p->ifa_name) + 1); 5787 if (p->ifa_addr) 5788 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz); 5789 if (p->ifa_netmask) 5790 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_netmask, struct_sockaddr_sz); 5791 // On Linux this is a union, but the other member also points to a 5792 // struct sockaddr, so the following is sufficient. 5793 if (p->ifa_dstaddr) 5794 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz); 5795 // FIXME(smatveev): Unpoison p->ifa_data as well. 5796 p = p->ifa_next; 5797 } 5798 } 5799 return res; 5800} 5801#define INIT_GETIFADDRS \ 5802 COMMON_INTERCEPT_FUNCTION(getifaddrs); 5803#else 5804#define INIT_GETIFADDRS 5805#endif 5806 5807#if SANITIZER_INTERCEPT_IF_INDEXTONAME 5808INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) { 5809 void *ctx; 5810 COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname); 5811 // FIXME: under ASan the call below may write to freed memory and corrupt 5812 // its metadata. See 5813 // https://github.com/google/sanitizers/issues/321. 5814 char *res = REAL(if_indextoname)(ifindex, ifname); 5815 if (res && ifname) 5816 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, internal_strlen(ifname) + 1); 5817 return res; 5818} 5819INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) { 5820 void *ctx; 5821 COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname); 5822 if (ifname) 5823 COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, internal_strlen(ifname) + 1); 5824 return REAL(if_nametoindex)(ifname); 5825} 5826#define INIT_IF_INDEXTONAME \ 5827 COMMON_INTERCEPT_FUNCTION(if_indextoname); \ 5828 COMMON_INTERCEPT_FUNCTION(if_nametoindex); 5829#else 5830#define INIT_IF_INDEXTONAME 5831#endif 5832 5833#if SANITIZER_INTERCEPT_CAPGET 5834INTERCEPTOR(int, capget, void *hdrp, void *datap) { 5835 void *ctx; 5836 COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap); 5837 if (hdrp) 5838 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz); 5839 // FIXME: under ASan the call below may write to freed memory and corrupt 5840 // its metadata. See 5841 // https://github.com/google/sanitizers/issues/321. 5842 int res = REAL(capget)(hdrp, datap); 5843 if (res == 0 && datap) 5844 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datap, __user_cap_data_struct_sz); 5845 // We can also return -1 and write to hdrp->version if the version passed in 5846 // hdrp->version is unsupported. But that's not a trivial condition to check, 5847 // and anyway COMMON_INTERCEPTOR_READ_RANGE protects us to some extent. 5848 return res; 5849} 5850INTERCEPTOR(int, capset, void *hdrp, const void *datap) { 5851 void *ctx; 5852 COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap); 5853 if (hdrp) 5854 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz); 5855 if (datap) 5856 COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, __user_cap_data_struct_sz); 5857 return REAL(capset)(hdrp, datap); 5858} 5859#define INIT_CAPGET \ 5860 COMMON_INTERCEPT_FUNCTION(capget); \ 5861 COMMON_INTERCEPT_FUNCTION(capset); 5862#else 5863#define INIT_CAPGET 5864#endif 5865 5866#if SANITIZER_INTERCEPT_AEABI_MEM 5867INTERCEPTOR(void *, __aeabi_memmove, void *to, const void *from, uptr size) { 5868 void *ctx; 5869 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size); 5870} 5871 5872INTERCEPTOR(void *, __aeabi_memmove4, void *to, const void *from, uptr size) { 5873 void *ctx; 5874 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size); 5875} 5876 5877INTERCEPTOR(void *, __aeabi_memmove8, void *to, const void *from, uptr size) { 5878 void *ctx; 5879 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size); 5880} 5881 5882INTERCEPTOR(void *, __aeabi_memcpy, void *to, const void *from, uptr size) { 5883 void *ctx; 5884 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size); 5885} 5886 5887INTERCEPTOR(void *, __aeabi_memcpy4, void *to, const void *from, uptr size) { 5888 void *ctx; 5889 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size); 5890} 5891 5892INTERCEPTOR(void *, __aeabi_memcpy8, void *to, const void *from, uptr size) { 5893 void *ctx; 5894 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size); 5895} 5896 5897// Note the argument order. 5898INTERCEPTOR(void *, __aeabi_memset, void *block, uptr size, int c) { 5899 void *ctx; 5900 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size); 5901} 5902 5903INTERCEPTOR(void *, __aeabi_memset4, void *block, uptr size, int c) { 5904 void *ctx; 5905 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size); 5906} 5907 5908INTERCEPTOR(void *, __aeabi_memset8, void *block, uptr size, int c) { 5909 void *ctx; 5910 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size); 5911} 5912 5913INTERCEPTOR(void *, __aeabi_memclr, void *block, uptr size) { 5914 void *ctx; 5915 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5916} 5917 5918INTERCEPTOR(void *, __aeabi_memclr4, void *block, uptr size) { 5919 void *ctx; 5920 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5921} 5922 5923INTERCEPTOR(void *, __aeabi_memclr8, void *block, uptr size) { 5924 void *ctx; 5925 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5926} 5927 5928#define INIT_AEABI_MEM \ 5929 COMMON_INTERCEPT_FUNCTION(__aeabi_memmove); \ 5930 COMMON_INTERCEPT_FUNCTION(__aeabi_memmove4); \ 5931 COMMON_INTERCEPT_FUNCTION(__aeabi_memmove8); \ 5932 COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy); \ 5933 COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy4); \ 5934 COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy8); \ 5935 COMMON_INTERCEPT_FUNCTION(__aeabi_memset); \ 5936 COMMON_INTERCEPT_FUNCTION(__aeabi_memset4); \ 5937 COMMON_INTERCEPT_FUNCTION(__aeabi_memset8); \ 5938 COMMON_INTERCEPT_FUNCTION(__aeabi_memclr); \ 5939 COMMON_INTERCEPT_FUNCTION(__aeabi_memclr4); \ 5940 COMMON_INTERCEPT_FUNCTION(__aeabi_memclr8); 5941#else 5942#define INIT_AEABI_MEM 5943#endif // SANITIZER_INTERCEPT_AEABI_MEM 5944 5945#if SANITIZER_INTERCEPT___BZERO 5946INTERCEPTOR(void *, __bzero, void *block, uptr size) { 5947 void *ctx; 5948 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5949} 5950#define INIT___BZERO COMMON_INTERCEPT_FUNCTION(__bzero); 5951#else 5952#define INIT___BZERO 5953#endif // SANITIZER_INTERCEPT___BZERO 5954 5955#if SANITIZER_INTERCEPT_BZERO 5956INTERCEPTOR(void *, bzero, void *block, uptr size) { 5957 void *ctx; 5958 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5959} 5960#define INIT_BZERO COMMON_INTERCEPT_FUNCTION(bzero); 5961#else 5962#define INIT_BZERO 5963#endif // SANITIZER_INTERCEPT_BZERO 5964 5965#if SANITIZER_INTERCEPT_FTIME 5966INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) { 5967 void *ctx; 5968 COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp); 5969 // FIXME: under ASan the call below may write to freed memory and corrupt 5970 // its metadata. See 5971 // https://github.com/google/sanitizers/issues/321. 5972 int res = REAL(ftime)(tp); 5973 if (tp) 5974 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp)); 5975 return res; 5976} 5977#define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime); 5978#else 5979#define INIT_FTIME 5980#endif // SANITIZER_INTERCEPT_FTIME 5981 5982#if SANITIZER_INTERCEPT_XDR 5983INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr, 5984 unsigned size, int op) { 5985 void *ctx; 5986 COMMON_INTERCEPTOR_ENTER(ctx, xdrmem_create, xdrs, addr, size, op); 5987 // FIXME: under ASan the call below may write to freed memory and corrupt 5988 // its metadata. See 5989 // https://github.com/google/sanitizers/issues/321. 5990 REAL(xdrmem_create)(xdrs, addr, size, op); 5991 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs)); 5992 if (op == __sanitizer_XDR_ENCODE) { 5993 // It's not obvious how much data individual xdr_ routines write. 5994 // Simply unpoison the entire target buffer in advance. 5995 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (void *)addr, size); 5996 } 5997} 5998 5999INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) { 6000 void *ctx; 6001 COMMON_INTERCEPTOR_ENTER(ctx, xdrstdio_create, xdrs, file, op); 6002 // FIXME: under ASan the call below may write to freed memory and corrupt 6003 // its metadata. See 6004 // https://github.com/google/sanitizers/issues/321. 6005 REAL(xdrstdio_create)(xdrs, file, op); 6006 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs)); 6007} 6008 6009// FIXME: under ASan the call below may write to freed memory and corrupt 6010// its metadata. See 6011// https://github.com/google/sanitizers/issues/321. 6012#define XDR_INTERCEPTOR(F, T) \ 6013 INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) { \ 6014 void *ctx; \ 6015 COMMON_INTERCEPTOR_ENTER(ctx, F, xdrs, p); \ 6016 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) \ 6017 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); \ 6018 int res = REAL(F)(xdrs, p); \ 6019 if (res && p && xdrs->x_op == __sanitizer_XDR_DECODE) \ 6020 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); \ 6021 return res; \ 6022 } 6023 6024XDR_INTERCEPTOR(xdr_short, short) 6025XDR_INTERCEPTOR(xdr_u_short, unsigned short) 6026XDR_INTERCEPTOR(xdr_int, int) 6027XDR_INTERCEPTOR(xdr_u_int, unsigned) 6028XDR_INTERCEPTOR(xdr_long, long) 6029XDR_INTERCEPTOR(xdr_u_long, unsigned long) 6030XDR_INTERCEPTOR(xdr_hyper, long long) 6031XDR_INTERCEPTOR(xdr_u_hyper, unsigned long long) 6032XDR_INTERCEPTOR(xdr_longlong_t, long long) 6033XDR_INTERCEPTOR(xdr_u_longlong_t, unsigned long long) 6034XDR_INTERCEPTOR(xdr_int8_t, u8) 6035XDR_INTERCEPTOR(xdr_uint8_t, u8) 6036XDR_INTERCEPTOR(xdr_int16_t, u16) 6037XDR_INTERCEPTOR(xdr_uint16_t, u16) 6038XDR_INTERCEPTOR(xdr_int32_t, u32) 6039XDR_INTERCEPTOR(xdr_uint32_t, u32) 6040XDR_INTERCEPTOR(xdr_int64_t, u64) 6041XDR_INTERCEPTOR(xdr_uint64_t, u64) 6042XDR_INTERCEPTOR(xdr_quad_t, long long) 6043XDR_INTERCEPTOR(xdr_u_quad_t, unsigned long long) 6044XDR_INTERCEPTOR(xdr_bool, bool) 6045XDR_INTERCEPTOR(xdr_enum, int) 6046XDR_INTERCEPTOR(xdr_char, char) 6047XDR_INTERCEPTOR(xdr_u_char, unsigned char) 6048XDR_INTERCEPTOR(xdr_float, float) 6049XDR_INTERCEPTOR(xdr_double, double) 6050 6051// FIXME: intercept xdr_array, opaque, union, vector, reference, pointer, 6052// wrapstring, sizeof 6053 6054INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep, 6055 unsigned maxsize) { 6056 void *ctx; 6057 COMMON_INTERCEPTOR_ENTER(ctx, xdr_bytes, xdrs, p, sizep, maxsize); 6058 if (p && sizep && xdrs->x_op == __sanitizer_XDR_ENCODE) { 6059 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); 6060 COMMON_INTERCEPTOR_READ_RANGE(ctx, sizep, sizeof(*sizep)); 6061 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, *sizep); 6062 } 6063 // FIXME: under ASan the call below may write to freed memory and corrupt 6064 // its metadata. See 6065 // https://github.com/google/sanitizers/issues/321. 6066 int res = REAL(xdr_bytes)(xdrs, p, sizep, maxsize); 6067 if (p && sizep && xdrs->x_op == __sanitizer_XDR_DECODE) { 6068 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 6069 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizep, sizeof(*sizep)); 6070 if (res && *p && *sizep) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, *sizep); 6071 } 6072 return res; 6073} 6074 6075INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p, 6076 unsigned maxsize) { 6077 void *ctx; 6078 COMMON_INTERCEPTOR_ENTER(ctx, xdr_string, xdrs, p, maxsize); 6079 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) { 6080 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); 6081 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, internal_strlen(*p) + 1); 6082 } 6083 // FIXME: under ASan the call below may write to freed memory and corrupt 6084 // its metadata. See 6085 // https://github.com/google/sanitizers/issues/321. 6086 int res = REAL(xdr_string)(xdrs, p, maxsize); 6087 if (p && xdrs->x_op == __sanitizer_XDR_DECODE) { 6088 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 6089 if (res && *p) 6090 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1); 6091 } 6092 return res; 6093} 6094 6095#define INIT_XDR \ 6096 COMMON_INTERCEPT_FUNCTION(xdrmem_create); \ 6097 COMMON_INTERCEPT_FUNCTION(xdrstdio_create); \ 6098 COMMON_INTERCEPT_FUNCTION(xdr_short); \ 6099 COMMON_INTERCEPT_FUNCTION(xdr_u_short); \ 6100 COMMON_INTERCEPT_FUNCTION(xdr_int); \ 6101 COMMON_INTERCEPT_FUNCTION(xdr_u_int); \ 6102 COMMON_INTERCEPT_FUNCTION(xdr_long); \ 6103 COMMON_INTERCEPT_FUNCTION(xdr_u_long); \ 6104 COMMON_INTERCEPT_FUNCTION(xdr_hyper); \ 6105 COMMON_INTERCEPT_FUNCTION(xdr_u_hyper); \ 6106 COMMON_INTERCEPT_FUNCTION(xdr_longlong_t); \ 6107 COMMON_INTERCEPT_FUNCTION(xdr_u_longlong_t); \ 6108 COMMON_INTERCEPT_FUNCTION(xdr_int8_t); \ 6109 COMMON_INTERCEPT_FUNCTION(xdr_uint8_t); \ 6110 COMMON_INTERCEPT_FUNCTION(xdr_int16_t); \ 6111 COMMON_INTERCEPT_FUNCTION(xdr_uint16_t); \ 6112 COMMON_INTERCEPT_FUNCTION(xdr_int32_t); \ 6113 COMMON_INTERCEPT_FUNCTION(xdr_uint32_t); \ 6114 COMMON_INTERCEPT_FUNCTION(xdr_int64_t); \ 6115 COMMON_INTERCEPT_FUNCTION(xdr_uint64_t); \ 6116 COMMON_INTERCEPT_FUNCTION(xdr_quad_t); \ 6117 COMMON_INTERCEPT_FUNCTION(xdr_u_quad_t); \ 6118 COMMON_INTERCEPT_FUNCTION(xdr_bool); \ 6119 COMMON_INTERCEPT_FUNCTION(xdr_enum); \ 6120 COMMON_INTERCEPT_FUNCTION(xdr_char); \ 6121 COMMON_INTERCEPT_FUNCTION(xdr_u_char); \ 6122 COMMON_INTERCEPT_FUNCTION(xdr_float); \ 6123 COMMON_INTERCEPT_FUNCTION(xdr_double); \ 6124 COMMON_INTERCEPT_FUNCTION(xdr_bytes); \ 6125 COMMON_INTERCEPT_FUNCTION(xdr_string); 6126#else 6127#define INIT_XDR 6128#endif // SANITIZER_INTERCEPT_XDR 6129 6130#if SANITIZER_INTERCEPT_XDRREC 6131typedef int (*xdrrec_cb)(char*, char*, int); 6132struct XdrRecWrapper { 6133 char *handle; 6134 xdrrec_cb rd, wr; 6135}; 6136typedef AddrHashMap<XdrRecWrapper *, 11> XdrRecWrapMap; 6137static XdrRecWrapMap *xdrrec_wrap_map; 6138 6139static int xdrrec_wr_wrap(char *handle, char *buf, int count) { 6140 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6141 COMMON_INTERCEPTOR_INITIALIZE_RANGE(buf, count); 6142 XdrRecWrapper *wrap = (XdrRecWrapper *)handle; 6143 return wrap->wr(wrap->handle, buf, count); 6144} 6145 6146static int xdrrec_rd_wrap(char *handle, char *buf, int count) { 6147 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6148 XdrRecWrapper *wrap = (XdrRecWrapper *)handle; 6149 return wrap->rd(wrap->handle, buf, count); 6150} 6151 6152// This doesn't apply to the solaris version as it has a different function 6153// signature. 6154INTERCEPTOR(void, xdrrec_create, __sanitizer_XDR *xdr, unsigned sndsize, 6155 unsigned rcvsize, char *handle, int (*rd)(char*, char*, int), 6156 int (*wr)(char*, char*, int)) { 6157 void *ctx; 6158 COMMON_INTERCEPTOR_ENTER(ctx, xdrrec_create, xdr, sndsize, rcvsize, 6159 handle, rd, wr); 6160 COMMON_INTERCEPTOR_READ_RANGE(ctx, &xdr->x_op, sizeof xdr->x_op); 6161 6162 // We can't allocate a wrapper on the stack, as the handle is used outside 6163 // this stack frame. So we put it on the heap, and keep track of it with 6164 // the HashMap (keyed by x_private). When we later need to xdr_destroy, 6165 // we can index the map, free the wrapper, and then clean the map entry. 6166 XdrRecWrapper *wrap_data = 6167 (XdrRecWrapper *)InternalAlloc(sizeof(XdrRecWrapper)); 6168 wrap_data->handle = handle; 6169 wrap_data->rd = rd; 6170 wrap_data->wr = wr; 6171 if (wr) 6172 wr = xdrrec_wr_wrap; 6173 if (rd) 6174 rd = xdrrec_rd_wrap; 6175 handle = (char *)wrap_data; 6176 6177 REAL(xdrrec_create)(xdr, sndsize, rcvsize, handle, rd, wr); 6178 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdr, sizeof *xdr); 6179 6180 XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, false, true); 6181 *wrap = wrap_data; 6182} 6183 6184// We have to intercept this to be able to free wrapper memory; 6185// otherwise it's not necessary. 6186INTERCEPTOR(void, xdr_destroy, __sanitizer_XDR *xdr) { 6187 void *ctx; 6188 COMMON_INTERCEPTOR_ENTER(ctx, xdr_destroy, xdr); 6189 6190 XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, true); 6191 InternalFree(*wrap); 6192 REAL(xdr_destroy)(xdr); 6193} 6194#define INIT_XDRREC_LINUX \ 6195 static u64 xdrrec_wrap_mem[sizeof(XdrRecWrapMap) / sizeof(u64) + 1]; \ 6196 xdrrec_wrap_map = new ((void *)&xdrrec_wrap_mem) XdrRecWrapMap(); \ 6197 COMMON_INTERCEPT_FUNCTION(xdrrec_create); \ 6198 COMMON_INTERCEPT_FUNCTION(xdr_destroy); 6199#else 6200#define INIT_XDRREC_LINUX 6201#endif 6202 6203#if SANITIZER_INTERCEPT_TSEARCH 6204INTERCEPTOR(void *, tsearch, void *key, void **rootp, 6205 int (*compar)(const void *, const void *)) { 6206 void *ctx; 6207 COMMON_INTERCEPTOR_ENTER(ctx, tsearch, key, rootp, compar); 6208 // FIXME: under ASan the call below may write to freed memory and corrupt 6209 // its metadata. See 6210 // https://github.com/google/sanitizers/issues/321. 6211 void *res = REAL(tsearch)(key, rootp, compar); 6212 if (res && *(void **)res == key) 6213 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(void *)); 6214 return res; 6215} 6216#define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch); 6217#else 6218#define INIT_TSEARCH 6219#endif 6220 6221#if SANITIZER_INTERCEPT_LIBIO_INTERNALS || SANITIZER_INTERCEPT_FOPEN || \ 6222 SANITIZER_INTERCEPT_OPEN_MEMSTREAM 6223void unpoison_file(__sanitizer_FILE *fp) { 6224#if SANITIZER_HAS_STRUCT_FILE 6225 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp, sizeof(*fp)); 6226#if SANITIZER_NETBSD 6227 if (fp->_bf._base && fp->_bf._size > 0) 6228 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_bf._base, 6229 fp->_bf._size); 6230#else 6231 if (fp->_IO_read_base && fp->_IO_read_base < fp->_IO_read_end) 6232 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_read_base, 6233 fp->_IO_read_end - fp->_IO_read_base); 6234 if (fp->_IO_write_base && fp->_IO_write_base < fp->_IO_write_end) 6235 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_write_base, 6236 fp->_IO_write_end - fp->_IO_write_base); 6237#endif 6238#endif // SANITIZER_HAS_STRUCT_FILE 6239} 6240#endif 6241 6242#if SANITIZER_INTERCEPT_LIBIO_INTERNALS 6243// These guys are called when a .c source is built with -O2. 6244INTERCEPTOR(int, __uflow, __sanitizer_FILE *fp) { 6245 void *ctx; 6246 COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp); 6247 int res = REAL(__uflow)(fp); 6248 unpoison_file(fp); 6249 return res; 6250} 6251INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) { 6252 void *ctx; 6253 COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp); 6254 int res = REAL(__underflow)(fp); 6255 unpoison_file(fp); 6256 return res; 6257} 6258INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) { 6259 void *ctx; 6260 COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch); 6261 int res = REAL(__overflow)(fp, ch); 6262 unpoison_file(fp); 6263 return res; 6264} 6265INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) { 6266 void *ctx; 6267 COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp); 6268 int res = REAL(__wuflow)(fp); 6269 unpoison_file(fp); 6270 return res; 6271} 6272INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) { 6273 void *ctx; 6274 COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp); 6275 int res = REAL(__wunderflow)(fp); 6276 unpoison_file(fp); 6277 return res; 6278} 6279INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) { 6280 void *ctx; 6281 COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch); 6282 int res = REAL(__woverflow)(fp, ch); 6283 unpoison_file(fp); 6284 return res; 6285} 6286#define INIT_LIBIO_INTERNALS \ 6287 COMMON_INTERCEPT_FUNCTION(__uflow); \ 6288 COMMON_INTERCEPT_FUNCTION(__underflow); \ 6289 COMMON_INTERCEPT_FUNCTION(__overflow); \ 6290 COMMON_INTERCEPT_FUNCTION(__wuflow); \ 6291 COMMON_INTERCEPT_FUNCTION(__wunderflow); \ 6292 COMMON_INTERCEPT_FUNCTION(__woverflow); 6293#else 6294#define INIT_LIBIO_INTERNALS 6295#endif 6296 6297#if SANITIZER_INTERCEPT_FOPEN 6298INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) { 6299 void *ctx; 6300 COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode); 6301 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 6302 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); 6303 __sanitizer_FILE *res = REAL(fopen)(path, mode); 6304 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 6305 if (res) unpoison_file(res); 6306 return res; 6307} 6308INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) { 6309 void *ctx; 6310 COMMON_INTERCEPTOR_ENTER(ctx, fdopen, fd, mode); 6311 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); 6312 __sanitizer_FILE *res = REAL(fdopen)(fd, mode); 6313 if (res) unpoison_file(res); 6314 return res; 6315} 6316INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode, 6317 __sanitizer_FILE *fp) { 6318 void *ctx; 6319 COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp); 6320 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 6321 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); 6322 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 6323 __sanitizer_FILE *res = REAL(freopen)(path, mode, fp); 6324 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 6325 if (res) unpoison_file(res); 6326 return res; 6327} 6328#define INIT_FOPEN \ 6329 COMMON_INTERCEPT_FUNCTION(fopen); \ 6330 COMMON_INTERCEPT_FUNCTION(fdopen); \ 6331 COMMON_INTERCEPT_FUNCTION(freopen); 6332#else 6333#define INIT_FOPEN 6334#endif 6335 6336#if SANITIZER_INTERCEPT_FLOPEN 6337INTERCEPTOR(int, flopen, const char *path, int flags, ...) { 6338 void *ctx; 6339 va_list ap; 6340 va_start(ap, flags); 6341 u16 mode = static_cast<u16>(va_arg(ap, u32)); 6342 va_end(ap); 6343 COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode); 6344 if (path) { 6345 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 6346 } 6347 return REAL(flopen)(path, flags, mode); 6348} 6349 6350INTERCEPTOR(int, flopenat, int dirfd, const char *path, int flags, ...) { 6351 void *ctx; 6352 va_list ap; 6353 va_start(ap, flags); 6354 u16 mode = static_cast<u16>(va_arg(ap, u32)); 6355 va_end(ap); 6356 COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode); 6357 if (path) { 6358 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 6359 } 6360 return REAL(flopenat)(dirfd, path, flags, mode); 6361} 6362 6363#define INIT_FLOPEN \ 6364 COMMON_INTERCEPT_FUNCTION(flopen); \ 6365 COMMON_INTERCEPT_FUNCTION(flopenat); 6366#else 6367#define INIT_FLOPEN 6368#endif 6369 6370#if SANITIZER_INTERCEPT_FOPEN64 6371INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) { 6372 void *ctx; 6373 COMMON_INTERCEPTOR_ENTER(ctx, fopen64, path, mode); 6374 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 6375 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); 6376 __sanitizer_FILE *res = REAL(fopen64)(path, mode); 6377 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 6378 if (res) unpoison_file(res); 6379 return res; 6380} 6381INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode, 6382 __sanitizer_FILE *fp) { 6383 void *ctx; 6384 COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp); 6385 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 6386 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); 6387 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 6388 __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp); 6389 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 6390 if (res) unpoison_file(res); 6391 return res; 6392} 6393#define INIT_FOPEN64 \ 6394 COMMON_INTERCEPT_FUNCTION(fopen64); \ 6395 COMMON_INTERCEPT_FUNCTION(freopen64); 6396#else 6397#define INIT_FOPEN64 6398#endif 6399 6400#if SANITIZER_INTERCEPT_OPEN_MEMSTREAM 6401INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) { 6402 void *ctx; 6403 COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc); 6404 // FIXME: under ASan the call below may write to freed memory and corrupt 6405 // its metadata. See 6406 // https://github.com/google/sanitizers/issues/321. 6407 __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc); 6408 if (res) { 6409 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr)); 6410 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc)); 6411 unpoison_file(res); 6412 FileMetadata file = {ptr, sizeloc}; 6413 SetInterceptorMetadata(res, file); 6414 } 6415 return res; 6416} 6417INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr, 6418 SIZE_T *sizeloc) { 6419 void *ctx; 6420 COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc); 6421 __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc); 6422 if (res) { 6423 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr)); 6424 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc)); 6425 unpoison_file(res); 6426 FileMetadata file = {(char **)ptr, sizeloc}; 6427 SetInterceptorMetadata(res, file); 6428 } 6429 return res; 6430} 6431INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size, 6432 const char *mode) { 6433 void *ctx; 6434 COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode); 6435 // FIXME: under ASan the call below may write to freed memory and corrupt 6436 // its metadata. See 6437 // https://github.com/google/sanitizers/issues/321. 6438 __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode); 6439 if (res) unpoison_file(res); 6440 return res; 6441} 6442#define INIT_OPEN_MEMSTREAM \ 6443 COMMON_INTERCEPT_FUNCTION(open_memstream); \ 6444 COMMON_INTERCEPT_FUNCTION(open_wmemstream); \ 6445 COMMON_INTERCEPT_FUNCTION(fmemopen); 6446#else 6447#define INIT_OPEN_MEMSTREAM 6448#endif 6449 6450#if SANITIZER_INTERCEPT_OBSTACK 6451static void initialize_obstack(__sanitizer_obstack *obstack) { 6452 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack)); 6453 if (obstack->chunk) 6454 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk, 6455 sizeof(*obstack->chunk)); 6456} 6457 6458INTERCEPTOR(int, _obstack_begin_1, __sanitizer_obstack *obstack, int sz, 6459 int align, void *(*alloc_fn)(uptr arg, uptr sz), 6460 void (*free_fn)(uptr arg, void *p)) { 6461 void *ctx; 6462 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn, 6463 free_fn); 6464 int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn); 6465 if (res) initialize_obstack(obstack); 6466 return res; 6467} 6468INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz, 6469 int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) { 6470 void *ctx; 6471 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn, 6472 free_fn); 6473 int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn); 6474 if (res) initialize_obstack(obstack); 6475 return res; 6476} 6477INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) { 6478 void *ctx; 6479 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length); 6480 REAL(_obstack_newchunk)(obstack, length); 6481 if (obstack->chunk) 6482 COMMON_INTERCEPTOR_INITIALIZE_RANGE( 6483 obstack->chunk, obstack->next_free - (char *)obstack->chunk); 6484} 6485#define INIT_OBSTACK \ 6486 COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \ 6487 COMMON_INTERCEPT_FUNCTION(_obstack_begin); \ 6488 COMMON_INTERCEPT_FUNCTION(_obstack_newchunk); 6489#else 6490#define INIT_OBSTACK 6491#endif 6492 6493#if SANITIZER_INTERCEPT_FFLUSH 6494INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) { 6495 void *ctx; 6496 COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp); 6497 if (fp) 6498 unpoison_file(fp); 6499 int res = REAL(fflush)(fp); 6500 // FIXME: handle fp == NULL 6501 if (fp) { 6502 const FileMetadata *m = GetInterceptorMetadata(fp); 6503 if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); 6504 } 6505 return res; 6506} 6507#define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush); 6508#else 6509#define INIT_FFLUSH 6510#endif 6511 6512#if SANITIZER_INTERCEPT_FCLOSE 6513INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) { 6514 void *ctx; 6515 COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp); 6516 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 6517 const FileMetadata *m = GetInterceptorMetadata(fp); 6518 if (fp) 6519 unpoison_file(fp); 6520 int res = REAL(fclose)(fp); 6521 if (m) { 6522 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); 6523 DeleteInterceptorMetadata(fp); 6524 } 6525 return res; 6526} 6527#define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose); 6528#else 6529#define INIT_FCLOSE 6530#endif 6531 6532#if SANITIZER_INTERCEPT_DLOPEN_DLCLOSE 6533INTERCEPTOR(void*, dlopen, const char *filename, int flag) { 6534 void *ctx; 6535 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlopen, filename, flag); 6536 if (filename) COMMON_INTERCEPTOR_READ_STRING(ctx, filename, 0); 6537 void *res = COMMON_INTERCEPTOR_DLOPEN(filename, flag); 6538 Symbolizer::GetOrInit()->InvalidateModuleList(); 6539 COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, res); 6540 return res; 6541} 6542 6543INTERCEPTOR(int, dlclose, void *handle) { 6544 void *ctx; 6545 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlclose, handle); 6546 int res = REAL(dlclose)(handle); 6547 Symbolizer::GetOrInit()->InvalidateModuleList(); 6548 COMMON_INTERCEPTOR_LIBRARY_UNLOADED(); 6549 return res; 6550} 6551#define INIT_DLOPEN_DLCLOSE \ 6552 COMMON_INTERCEPT_FUNCTION(dlopen); \ 6553 COMMON_INTERCEPT_FUNCTION(dlclose); 6554#else 6555#define INIT_DLOPEN_DLCLOSE 6556#endif 6557 6558#if SANITIZER_INTERCEPT_GETPASS 6559INTERCEPTOR(char *, getpass, const char *prompt) { 6560 void *ctx; 6561 COMMON_INTERCEPTOR_ENTER(ctx, getpass, prompt); 6562 if (prompt) 6563 COMMON_INTERCEPTOR_READ_RANGE(ctx, prompt, internal_strlen(prompt)+1); 6564 char *res = REAL(getpass)(prompt); 6565 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res)+1); 6566 return res; 6567} 6568 6569#define INIT_GETPASS COMMON_INTERCEPT_FUNCTION(getpass); 6570#else 6571#define INIT_GETPASS 6572#endif 6573 6574#if SANITIZER_INTERCEPT_TIMERFD 6575INTERCEPTOR(int, timerfd_settime, int fd, int flags, void *new_value, 6576 void *old_value) { 6577 void *ctx; 6578 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_settime, fd, flags, new_value, 6579 old_value); 6580 COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerspec_sz); 6581 int res = REAL(timerfd_settime)(fd, flags, new_value, old_value); 6582 if (res != -1 && old_value) 6583 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerspec_sz); 6584 return res; 6585} 6586 6587INTERCEPTOR(int, timerfd_gettime, int fd, void *curr_value) { 6588 void *ctx; 6589 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_gettime, fd, curr_value); 6590 int res = REAL(timerfd_gettime)(fd, curr_value); 6591 if (res != -1 && curr_value) 6592 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerspec_sz); 6593 return res; 6594} 6595#define INIT_TIMERFD \ 6596 COMMON_INTERCEPT_FUNCTION(timerfd_settime); \ 6597 COMMON_INTERCEPT_FUNCTION(timerfd_gettime); 6598#else 6599#define INIT_TIMERFD 6600#endif 6601 6602#if SANITIZER_INTERCEPT_MLOCKX 6603// Linux kernel has a bug that leads to kernel deadlock if a process 6604// maps TBs of memory and then calls mlock(). 6605static void MlockIsUnsupported() { 6606 static atomic_uint8_t printed; 6607 if (atomic_exchange(&printed, 1, memory_order_relaxed)) 6608 return; 6609 VPrintf(1, "%s ignores mlock/mlockall/munlock/munlockall\n", 6610 SanitizerToolName); 6611} 6612 6613INTERCEPTOR(int, mlock, const void *addr, uptr len) { 6614 MlockIsUnsupported(); 6615 return 0; 6616} 6617 6618INTERCEPTOR(int, munlock, const void *addr, uptr len) { 6619 MlockIsUnsupported(); 6620 return 0; 6621} 6622 6623INTERCEPTOR(int, mlockall, int flags) { 6624 MlockIsUnsupported(); 6625 return 0; 6626} 6627 6628INTERCEPTOR(int, munlockall, void) { 6629 MlockIsUnsupported(); 6630 return 0; 6631} 6632 6633#define INIT_MLOCKX \ 6634 COMMON_INTERCEPT_FUNCTION(mlock); \ 6635 COMMON_INTERCEPT_FUNCTION(munlock); \ 6636 COMMON_INTERCEPT_FUNCTION(mlockall); \ 6637 COMMON_INTERCEPT_FUNCTION(munlockall); 6638 6639#else 6640#define INIT_MLOCKX 6641#endif // SANITIZER_INTERCEPT_MLOCKX 6642 6643#if SANITIZER_INTERCEPT_FOPENCOOKIE 6644struct WrappedCookie { 6645 void *real_cookie; 6646 __sanitizer_cookie_io_functions_t real_io_funcs; 6647}; 6648 6649static uptr wrapped_read(void *cookie, char *buf, uptr size) { 6650 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6651 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6652 __sanitizer_cookie_io_read real_read = wrapped_cookie->real_io_funcs.read; 6653 return real_read ? real_read(wrapped_cookie->real_cookie, buf, size) : 0; 6654} 6655 6656static uptr wrapped_write(void *cookie, const char *buf, uptr size) { 6657 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6658 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6659 __sanitizer_cookie_io_write real_write = wrapped_cookie->real_io_funcs.write; 6660 return real_write ? real_write(wrapped_cookie->real_cookie, buf, size) : size; 6661} 6662 6663static int wrapped_seek(void *cookie, u64 *offset, int whence) { 6664 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6665 COMMON_INTERCEPTOR_INITIALIZE_RANGE(offset, sizeof(*offset)); 6666 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6667 __sanitizer_cookie_io_seek real_seek = wrapped_cookie->real_io_funcs.seek; 6668 return real_seek ? real_seek(wrapped_cookie->real_cookie, offset, whence) 6669 : -1; 6670} 6671 6672static int wrapped_close(void *cookie) { 6673 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 6674 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6675 __sanitizer_cookie_io_close real_close = wrapped_cookie->real_io_funcs.close; 6676 int res = real_close ? real_close(wrapped_cookie->real_cookie) : 0; 6677 InternalFree(wrapped_cookie); 6678 return res; 6679} 6680 6681INTERCEPTOR(__sanitizer_FILE *, fopencookie, void *cookie, const char *mode, 6682 __sanitizer_cookie_io_functions_t io_funcs) { 6683 void *ctx; 6684 COMMON_INTERCEPTOR_ENTER(ctx, fopencookie, cookie, mode, io_funcs); 6685 WrappedCookie *wrapped_cookie = 6686 (WrappedCookie *)InternalAlloc(sizeof(WrappedCookie)); 6687 wrapped_cookie->real_cookie = cookie; 6688 wrapped_cookie->real_io_funcs = io_funcs; 6689 __sanitizer_FILE *res = 6690 REAL(fopencookie)(wrapped_cookie, mode, {wrapped_read, wrapped_write, 6691 wrapped_seek, wrapped_close}); 6692 return res; 6693} 6694 6695#define INIT_FOPENCOOKIE COMMON_INTERCEPT_FUNCTION(fopencookie); 6696#else 6697#define INIT_FOPENCOOKIE 6698#endif // SANITIZER_INTERCEPT_FOPENCOOKIE 6699 6700#if SANITIZER_INTERCEPT_SEM 6701INTERCEPTOR(int, sem_init, __sanitizer_sem_t *s, int pshared, unsigned value) { 6702 void *ctx; 6703 COMMON_INTERCEPTOR_ENTER(ctx, sem_init, s, pshared, value); 6704 // Workaround a bug in glibc's "old" semaphore implementation by 6705 // zero-initializing the sem_t contents. This has to be done here because 6706 // interceptors bind to the lowest version before glibc 2.36, hitting the 6707 // buggy code path while the non-sanitized build of the same code works fine. 6708 REAL(memset)(s, 0, sizeof(*s)); 6709 int res = REAL(sem_init)(s, pshared, value); 6710 return res; 6711} 6712 6713INTERCEPTOR(int, sem_destroy, __sanitizer_sem_t *s) { 6714 void *ctx; 6715 COMMON_INTERCEPTOR_ENTER(ctx, sem_destroy, s); 6716 int res = REAL(sem_destroy)(s); 6717 return res; 6718} 6719 6720INTERCEPTOR(int, sem_wait, __sanitizer_sem_t *s) { 6721 void *ctx; 6722 COMMON_INTERCEPTOR_ENTER(ctx, sem_wait, s); 6723 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_wait)(s); 6724 if (res == 0) { 6725 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6726 } 6727 return res; 6728} 6729 6730INTERCEPTOR(int, sem_trywait, __sanitizer_sem_t *s) { 6731 void *ctx; 6732 COMMON_INTERCEPTOR_ENTER(ctx, sem_trywait, s); 6733 int res = REAL(sem_trywait)(s); 6734 if (res == 0) { 6735 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6736 } 6737 return res; 6738} 6739 6740INTERCEPTOR(int, sem_timedwait, __sanitizer_sem_t *s, void *abstime) { 6741 void *ctx; 6742 COMMON_INTERCEPTOR_ENTER(ctx, sem_timedwait, s, abstime); 6743 COMMON_INTERCEPTOR_READ_RANGE(ctx, abstime, struct_timespec_sz); 6744 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_timedwait)(s, abstime); 6745 if (res == 0) { 6746 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6747 } 6748 return res; 6749} 6750 6751INTERCEPTOR(int, sem_post, __sanitizer_sem_t *s) { 6752 void *ctx; 6753 COMMON_INTERCEPTOR_ENTER(ctx, sem_post, s); 6754 COMMON_INTERCEPTOR_RELEASE(ctx, (uptr)s); 6755 int res = REAL(sem_post)(s); 6756 return res; 6757} 6758 6759INTERCEPTOR(int, sem_getvalue, __sanitizer_sem_t *s, int *sval) { 6760 void *ctx; 6761 COMMON_INTERCEPTOR_ENTER(ctx, sem_getvalue, s, sval); 6762 int res = REAL(sem_getvalue)(s, sval); 6763 if (res == 0) { 6764 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6765 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sval, sizeof(*sval)); 6766 } 6767 return res; 6768} 6769 6770INTERCEPTOR(__sanitizer_sem_t *, sem_open, const char *name, int oflag, ...) { 6771 void *ctx; 6772 va_list ap; 6773 va_start(ap, oflag); 6774 u32 mode = va_arg(ap, u32); 6775 u32 value = va_arg(ap, u32); 6776 COMMON_INTERCEPTOR_ENTER(ctx, sem_open, name, oflag, mode, value); 6777 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 6778 __sanitizer_sem_t *s = REAL(sem_open)(name, oflag, mode, value); 6779 if (s) 6780 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, sizeof(*s)); 6781 va_end(ap); 6782 return s; 6783} 6784 6785INTERCEPTOR(int, sem_unlink, const char *name) { 6786 void *ctx; 6787 COMMON_INTERCEPTOR_ENTER(ctx, sem_unlink, name); 6788 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 6789 return REAL(sem_unlink)(name); 6790} 6791 6792# define INIT_SEM \ 6793 COMMON_INTERCEPT_FUNCTION(sem_init); \ 6794 COMMON_INTERCEPT_FUNCTION(sem_destroy); \ 6795 COMMON_INTERCEPT_FUNCTION(sem_wait); \ 6796 COMMON_INTERCEPT_FUNCTION(sem_trywait); \ 6797 COMMON_INTERCEPT_FUNCTION(sem_timedwait); \ 6798 COMMON_INTERCEPT_FUNCTION(sem_post); \ 6799 COMMON_INTERCEPT_FUNCTION(sem_getvalue); \ 6800 COMMON_INTERCEPT_FUNCTION(sem_open); \ 6801 COMMON_INTERCEPT_FUNCTION(sem_unlink); 6802#else 6803# define INIT_SEM 6804#endif // SANITIZER_INTERCEPT_SEM 6805 6806#if SANITIZER_INTERCEPT_PTHREAD_SETCANCEL 6807INTERCEPTOR(int, pthread_setcancelstate, int state, int *oldstate) { 6808 void *ctx; 6809 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcancelstate, state, oldstate); 6810 int res = REAL(pthread_setcancelstate)(state, oldstate); 6811 if (res == 0 && oldstate != nullptr) 6812 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldstate, sizeof(*oldstate)); 6813 return res; 6814} 6815 6816INTERCEPTOR(int, pthread_setcanceltype, int type, int *oldtype) { 6817 void *ctx; 6818 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcanceltype, type, oldtype); 6819 int res = REAL(pthread_setcanceltype)(type, oldtype); 6820 if (res == 0 && oldtype != nullptr) 6821 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldtype, sizeof(*oldtype)); 6822 return res; 6823} 6824#define INIT_PTHREAD_SETCANCEL \ 6825 COMMON_INTERCEPT_FUNCTION(pthread_setcancelstate); \ 6826 COMMON_INTERCEPT_FUNCTION(pthread_setcanceltype); 6827#else 6828#define INIT_PTHREAD_SETCANCEL 6829#endif 6830 6831#if SANITIZER_INTERCEPT_MINCORE 6832INTERCEPTOR(int, mincore, void *addr, uptr length, unsigned char *vec) { 6833 void *ctx; 6834 COMMON_INTERCEPTOR_ENTER(ctx, mincore, addr, length, vec); 6835 int res = REAL(mincore)(addr, length, vec); 6836 if (res == 0) { 6837 uptr page_size = GetPageSizeCached(); 6838 uptr vec_size = ((length + page_size - 1) & (~(page_size - 1))) / page_size; 6839 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, vec, vec_size); 6840 } 6841 return res; 6842} 6843#define INIT_MINCORE COMMON_INTERCEPT_FUNCTION(mincore); 6844#else 6845#define INIT_MINCORE 6846#endif 6847 6848#if SANITIZER_INTERCEPT_PROCESS_VM_READV 6849INTERCEPTOR(SSIZE_T, process_vm_readv, int pid, __sanitizer_iovec *local_iov, 6850 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt, 6851 uptr flags) { 6852 void *ctx; 6853 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_readv, pid, local_iov, liovcnt, 6854 remote_iov, riovcnt, flags); 6855 SSIZE_T res = REAL(process_vm_readv)(pid, local_iov, liovcnt, remote_iov, 6856 riovcnt, flags); 6857 if (res > 0) 6858 write_iovec(ctx, local_iov, liovcnt, res); 6859 return res; 6860} 6861 6862INTERCEPTOR(SSIZE_T, process_vm_writev, int pid, __sanitizer_iovec *local_iov, 6863 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt, 6864 uptr flags) { 6865 void *ctx; 6866 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_writev, pid, local_iov, liovcnt, 6867 remote_iov, riovcnt, flags); 6868 SSIZE_T res = REAL(process_vm_writev)(pid, local_iov, liovcnt, remote_iov, 6869 riovcnt, flags); 6870 if (res > 0) 6871 read_iovec(ctx, local_iov, liovcnt, res); 6872 return res; 6873} 6874#define INIT_PROCESS_VM_READV \ 6875 COMMON_INTERCEPT_FUNCTION(process_vm_readv); \ 6876 COMMON_INTERCEPT_FUNCTION(process_vm_writev); 6877#else 6878#define INIT_PROCESS_VM_READV 6879#endif 6880 6881#if SANITIZER_INTERCEPT_CTERMID 6882INTERCEPTOR(char *, ctermid, char *s) { 6883 void *ctx; 6884 COMMON_INTERCEPTOR_ENTER(ctx, ctermid, s); 6885 char *res = REAL(ctermid)(s); 6886 if (res) { 6887 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 6888 } 6889 return res; 6890} 6891#define INIT_CTERMID COMMON_INTERCEPT_FUNCTION(ctermid); 6892#else 6893#define INIT_CTERMID 6894#endif 6895 6896#if SANITIZER_INTERCEPT_CTERMID_R 6897INTERCEPTOR(char *, ctermid_r, char *s) { 6898 void *ctx; 6899 COMMON_INTERCEPTOR_ENTER(ctx, ctermid_r, s); 6900 char *res = REAL(ctermid_r)(s); 6901 if (res) { 6902 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 6903 } 6904 return res; 6905} 6906#define INIT_CTERMID_R COMMON_INTERCEPT_FUNCTION(ctermid_r); 6907#else 6908#define INIT_CTERMID_R 6909#endif 6910 6911#if SANITIZER_INTERCEPT_RECV_RECVFROM 6912INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) { 6913 void *ctx; 6914 COMMON_INTERCEPTOR_ENTER(ctx, recv, fd, buf, len, flags); 6915 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6916 SSIZE_T res = REAL(recv)(fd, buf, len, flags); 6917 if (res > 0) { 6918 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6919 } 6920 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 6921 return res; 6922} 6923 6924INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags, 6925 void *srcaddr, int *addrlen) { 6926 void *ctx; 6927 COMMON_INTERCEPTOR_ENTER(ctx, recvfrom, fd, buf, len, flags, srcaddr, 6928 addrlen); 6929 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6930 SIZE_T srcaddr_sz; 6931 if (srcaddr) srcaddr_sz = *addrlen; 6932 (void)srcaddr_sz; // prevent "set but not used" warning 6933 SSIZE_T res = REAL(recvfrom)(fd, buf, len, flags, srcaddr, addrlen); 6934 if (res > 0) 6935 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6936 if (res >= 0 && srcaddr) 6937 COMMON_INTERCEPTOR_INITIALIZE_RANGE(srcaddr, 6938 Min((SIZE_T)*addrlen, srcaddr_sz)); 6939 return res; 6940} 6941#define INIT_RECV_RECVFROM \ 6942 COMMON_INTERCEPT_FUNCTION(recv); \ 6943 COMMON_INTERCEPT_FUNCTION(recvfrom); 6944#else 6945#define INIT_RECV_RECVFROM 6946#endif 6947 6948#if SANITIZER_INTERCEPT_SEND_SENDTO 6949INTERCEPTOR(SSIZE_T, send, int fd, void *buf, SIZE_T len, int flags) { 6950 void *ctx; 6951 COMMON_INTERCEPTOR_ENTER(ctx, send, fd, buf, len, flags); 6952 if (fd >= 0) { 6953 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6954 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 6955 } 6956 SSIZE_T res = REAL(send)(fd, buf, len, flags); 6957 if (common_flags()->intercept_send && res > 0) 6958 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6959 return res; 6960} 6961 6962INTERCEPTOR(SSIZE_T, sendto, int fd, void *buf, SIZE_T len, int flags, 6963 void *dstaddr, int addrlen) { 6964 void *ctx; 6965 COMMON_INTERCEPTOR_ENTER(ctx, sendto, fd, buf, len, flags, dstaddr, addrlen); 6966 if (fd >= 0) { 6967 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6968 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 6969 } 6970 // Can't check dstaddr as it may have uninitialized padding at the end. 6971 SSIZE_T res = REAL(sendto)(fd, buf, len, flags, dstaddr, addrlen); 6972 if (common_flags()->intercept_send && res > 0) 6973 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6974 return res; 6975} 6976#define INIT_SEND_SENDTO \ 6977 COMMON_INTERCEPT_FUNCTION(send); \ 6978 COMMON_INTERCEPT_FUNCTION(sendto); 6979#else 6980#define INIT_SEND_SENDTO 6981#endif 6982 6983#if SANITIZER_INTERCEPT_EVENTFD_READ_WRITE 6984INTERCEPTOR(int, eventfd_read, int fd, u64 *value) { 6985 void *ctx; 6986 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_read, fd, value); 6987 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6988 int res = REAL(eventfd_read)(fd, value); 6989 if (res == 0) { 6990 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, sizeof(*value)); 6991 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 6992 } 6993 return res; 6994} 6995INTERCEPTOR(int, eventfd_write, int fd, u64 value) { 6996 void *ctx; 6997 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_write, fd, value); 6998 if (fd >= 0) { 6999 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 7000 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 7001 } 7002 int res = REAL(eventfd_write)(fd, value); 7003 return res; 7004} 7005#define INIT_EVENTFD_READ_WRITE \ 7006 COMMON_INTERCEPT_FUNCTION(eventfd_read); \ 7007 COMMON_INTERCEPT_FUNCTION(eventfd_write) 7008#else 7009#define INIT_EVENTFD_READ_WRITE 7010#endif 7011 7012#if SANITIZER_INTERCEPT_STAT 7013INTERCEPTOR(int, stat, const char *path, void *buf) { 7014 void *ctx; 7015 COMMON_INTERCEPTOR_ENTER(ctx, stat, path, buf); 7016 if (common_flags()->intercept_stat) 7017 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7018 int res = REAL(stat)(path, buf); 7019 if (!res) 7020 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 7021 return res; 7022} 7023#define INIT_STAT COMMON_INTERCEPT_FUNCTION(stat) 7024#else 7025#define INIT_STAT 7026#endif 7027 7028#if SANITIZER_INTERCEPT_STAT64 7029INTERCEPTOR(int, stat64, const char *path, void *buf) { 7030 void *ctx; 7031 COMMON_INTERCEPTOR_ENTER(ctx, stat64, path, buf); 7032 if (common_flags()->intercept_stat) 7033 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7034 int res = REAL(stat64)(path, buf); 7035 if (!res) 7036 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); 7037 return res; 7038} 7039#define INIT_STAT64 COMMON_INTERCEPT_FUNCTION(stat64) 7040#else 7041#define INIT_STAT64 7042#endif 7043 7044 7045#if SANITIZER_INTERCEPT_LSTAT 7046INTERCEPTOR(int, lstat, const char *path, void *buf) { 7047 void *ctx; 7048 COMMON_INTERCEPTOR_ENTER(ctx, lstat, path, buf); 7049 if (common_flags()->intercept_stat) 7050 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7051 int res = REAL(lstat)(path, buf); 7052 if (!res) 7053 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 7054 return res; 7055} 7056#define INIT_LSTAT COMMON_INTERCEPT_FUNCTION(lstat) 7057#else 7058#define INIT_LSTAT 7059#endif 7060 7061#if SANITIZER_INTERCEPT_STAT64 7062INTERCEPTOR(int, lstat64, const char *path, void *buf) { 7063 void *ctx; 7064 COMMON_INTERCEPTOR_ENTER(ctx, lstat64, path, buf); 7065 if (common_flags()->intercept_stat) 7066 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7067 int res = REAL(lstat64)(path, buf); 7068 if (!res) 7069 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); 7070 return res; 7071} 7072#define INIT_LSTAT64 COMMON_INTERCEPT_FUNCTION(lstat64) 7073#else 7074#define INIT_LSTAT64 7075#endif 7076 7077#if SANITIZER_INTERCEPT___XSTAT 7078INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) { 7079 void *ctx; 7080 COMMON_INTERCEPTOR_ENTER(ctx, __xstat, version, path, buf); 7081 if (common_flags()->intercept_stat) 7082 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7083 int res = REAL(__xstat)(version, path, buf); 7084 if (!res) 7085 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 7086 return res; 7087} 7088#define INIT___XSTAT COMMON_INTERCEPT_FUNCTION(__xstat) 7089#else 7090#define INIT___XSTAT 7091#endif 7092 7093#if SANITIZER_INTERCEPT___XSTAT64 7094INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) { 7095 void *ctx; 7096 COMMON_INTERCEPTOR_ENTER(ctx, __xstat64, version, path, buf); 7097 if (common_flags()->intercept_stat) 7098 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7099 int res = REAL(__xstat64)(version, path, buf); 7100 if (!res) 7101 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); 7102 return res; 7103} 7104#define INIT___XSTAT64 COMMON_INTERCEPT_FUNCTION(__xstat64) 7105#else 7106#define INIT___XSTAT64 7107#endif 7108 7109#if SANITIZER_INTERCEPT___LXSTAT 7110INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) { 7111 void *ctx; 7112 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat, version, path, buf); 7113 if (common_flags()->intercept_stat) 7114 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7115 int res = REAL(__lxstat)(version, path, buf); 7116 if (!res) 7117 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 7118 return res; 7119} 7120#define INIT___LXSTAT COMMON_INTERCEPT_FUNCTION(__lxstat) 7121#else 7122#define INIT___LXSTAT 7123#endif 7124 7125#if SANITIZER_INTERCEPT___LXSTAT64 7126INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) { 7127 void *ctx; 7128 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat64, version, path, buf); 7129 if (common_flags()->intercept_stat) 7130 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 7131 int res = REAL(__lxstat64)(version, path, buf); 7132 if (!res) 7133 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); 7134 return res; 7135} 7136#define INIT___LXSTAT64 COMMON_INTERCEPT_FUNCTION(__lxstat64) 7137#else 7138#define INIT___LXSTAT64 7139#endif 7140 7141// FIXME: add other *stat interceptor 7142 7143#if SANITIZER_INTERCEPT_UTMP 7144INTERCEPTOR(void *, getutent, int dummy) { 7145 void *ctx; 7146 COMMON_INTERCEPTOR_ENTER(ctx, getutent, dummy); 7147 void *res = REAL(getutent)(dummy); 7148 if (res) 7149 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); 7150 return res; 7151} 7152INTERCEPTOR(void *, getutid, void *ut) { 7153 void *ctx; 7154 COMMON_INTERCEPTOR_ENTER(ctx, getutid, ut); 7155 void *res = REAL(getutid)(ut); 7156 if (res) 7157 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); 7158 return res; 7159} 7160INTERCEPTOR(void *, getutline, void *ut) { 7161 void *ctx; 7162 COMMON_INTERCEPTOR_ENTER(ctx, getutline, ut); 7163 void *res = REAL(getutline)(ut); 7164 if (res) 7165 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); 7166 return res; 7167} 7168#define INIT_UTMP \ 7169 COMMON_INTERCEPT_FUNCTION(getutent); \ 7170 COMMON_INTERCEPT_FUNCTION(getutid); \ 7171 COMMON_INTERCEPT_FUNCTION(getutline); 7172#else 7173#define INIT_UTMP 7174#endif 7175 7176#if SANITIZER_INTERCEPT_UTMPX 7177INTERCEPTOR(void *, getutxent, int dummy) { 7178 void *ctx; 7179 COMMON_INTERCEPTOR_ENTER(ctx, getutxent, dummy); 7180 void *res = REAL(getutxent)(dummy); 7181 if (res) 7182 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); 7183 return res; 7184} 7185INTERCEPTOR(void *, getutxid, void *ut) { 7186 void *ctx; 7187 COMMON_INTERCEPTOR_ENTER(ctx, getutxid, ut); 7188 void *res = REAL(getutxid)(ut); 7189 if (res) 7190 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); 7191 return res; 7192} 7193INTERCEPTOR(void *, getutxline, void *ut) { 7194 void *ctx; 7195 COMMON_INTERCEPTOR_ENTER(ctx, getutxline, ut); 7196 void *res = REAL(getutxline)(ut); 7197 if (res) 7198 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); 7199 return res; 7200} 7201INTERCEPTOR(void *, pututxline, const void *ut) { 7202 void *ctx; 7203 COMMON_INTERCEPTOR_ENTER(ctx, pututxline, ut); 7204 if (ut) 7205 COMMON_INTERCEPTOR_READ_RANGE(ctx, ut, __sanitizer::struct_utmpx_sz); 7206 void *res = REAL(pututxline)(ut); 7207 if (res) 7208 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_utmpx_sz); 7209 return res; 7210} 7211#define INIT_UTMPX \ 7212 COMMON_INTERCEPT_FUNCTION(getutxent); \ 7213 COMMON_INTERCEPT_FUNCTION(getutxid); \ 7214 COMMON_INTERCEPT_FUNCTION(getutxline); \ 7215 COMMON_INTERCEPT_FUNCTION(pututxline); 7216#else 7217#define INIT_UTMPX 7218#endif 7219 7220#if SANITIZER_INTERCEPT_GETLOADAVG 7221INTERCEPTOR(int, getloadavg, double *loadavg, int nelem) { 7222 void *ctx; 7223 COMMON_INTERCEPTOR_ENTER(ctx, getloadavg, loadavg, nelem); 7224 int res = REAL(getloadavg)(loadavg, nelem); 7225 if (res > 0) 7226 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, loadavg, res * sizeof(*loadavg)); 7227 return res; 7228} 7229#define INIT_GETLOADAVG \ 7230 COMMON_INTERCEPT_FUNCTION(getloadavg); 7231#else 7232#define INIT_GETLOADAVG 7233#endif 7234 7235#if SANITIZER_INTERCEPT_MCHECK_MPROBE 7236INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) { 7237 return 0; 7238} 7239 7240INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) { 7241 return 0; 7242} 7243 7244INTERCEPTOR(int, mprobe, void *ptr) { 7245 return 0; 7246} 7247#endif 7248 7249INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) { 7250 void *ctx; 7251 COMMON_INTERCEPTOR_ENTER(ctx, wcslen, s); 7252 SIZE_T res = REAL(wcslen)(s); 7253 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (res + 1)); 7254 return res; 7255} 7256 7257INTERCEPTOR(SIZE_T, wcsnlen, const wchar_t *s, SIZE_T n) { 7258 void *ctx; 7259 COMMON_INTERCEPTOR_ENTER(ctx, wcsnlen, s, n); 7260 SIZE_T res = REAL(wcsnlen)(s, n); 7261 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * Min(res + 1, n)); 7262 return res; 7263} 7264#define INIT_WCSLEN \ 7265 COMMON_INTERCEPT_FUNCTION(wcslen); \ 7266 COMMON_INTERCEPT_FUNCTION(wcsnlen); 7267 7268#if SANITIZER_INTERCEPT_WCSCAT 7269INTERCEPTOR(wchar_t *, wcscat, wchar_t *dst, const wchar_t *src) { 7270 void *ctx; 7271 COMMON_INTERCEPTOR_ENTER(ctx, wcscat, dst, src); 7272 SIZE_T src_size = internal_wcslen(src); 7273 SIZE_T dst_size = internal_wcslen(dst); 7274 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, (src_size + 1) * sizeof(wchar_t)); 7275 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t)); 7276 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size, 7277 (src_size + 1) * sizeof(wchar_t)); 7278 return REAL(wcscat)(dst, src); 7279} 7280 7281INTERCEPTOR(wchar_t *, wcsncat, wchar_t *dst, const wchar_t *src, SIZE_T n) { 7282 void *ctx; 7283 COMMON_INTERCEPTOR_ENTER(ctx, wcsncat, dst, src, n); 7284 SIZE_T src_size = internal_wcsnlen(src, n); 7285 SIZE_T dst_size = internal_wcslen(dst); 7286 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, 7287 Min(src_size + 1, n) * sizeof(wchar_t)); 7288 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t)); 7289 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size, 7290 (src_size + 1) * sizeof(wchar_t)); 7291 return REAL(wcsncat)(dst, src, n); 7292} 7293#define INIT_WCSCAT \ 7294 COMMON_INTERCEPT_FUNCTION(wcscat); \ 7295 COMMON_INTERCEPT_FUNCTION(wcsncat); 7296#else 7297#define INIT_WCSCAT 7298#endif 7299 7300#if SANITIZER_INTERCEPT_WCSDUP 7301INTERCEPTOR(wchar_t *, wcsdup, wchar_t *s) { 7302 void *ctx; 7303 COMMON_INTERCEPTOR_ENTER(ctx, wcsdup, s); 7304 SIZE_T len = internal_wcslen(s); 7305 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (len + 1)); 7306 wchar_t *result = REAL(wcsdup)(s); 7307 if (result) 7308 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(wchar_t) * (len + 1)); 7309 return result; 7310} 7311 7312#define INIT_WCSDUP COMMON_INTERCEPT_FUNCTION(wcsdup); 7313#else 7314#define INIT_WCSDUP 7315#endif 7316 7317#if SANITIZER_INTERCEPT_STRXFRM 7318static SIZE_T RealStrLen(const char *str) { return internal_strlen(str); } 7319 7320static SIZE_T RealStrLen(const wchar_t *str) { return internal_wcslen(str); } 7321 7322#define STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len, ...) \ 7323 { \ 7324 void *ctx; \ 7325 COMMON_INTERCEPTOR_ENTER(ctx, strxfrm, dest, src, len, ##__VA_ARGS__); \ 7326 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, \ 7327 sizeof(*src) * (RealStrLen(src) + 1)); \ 7328 SIZE_T res = REAL(strxfrm)(dest, src, len, ##__VA_ARGS__); \ 7329 if (res < len) \ 7330 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, sizeof(*src) * (res + 1)); \ 7331 return res; \ 7332 } 7333 7334INTERCEPTOR(SIZE_T, strxfrm, char *dest, const char *src, SIZE_T len) { 7335 STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len); 7336} 7337 7338INTERCEPTOR(SIZE_T, strxfrm_l, char *dest, const char *src, SIZE_T len, 7339 void *locale) { 7340 STRXFRM_INTERCEPTOR_IMPL(strxfrm_l, dest, src, len, locale); 7341} 7342 7343#define INIT_STRXFRM \ 7344 COMMON_INTERCEPT_FUNCTION(strxfrm); \ 7345 COMMON_INTERCEPT_FUNCTION(strxfrm_l); 7346#else 7347#define INIT_STRXFRM 7348#endif 7349 7350#if SANITIZER_INTERCEPT___STRXFRM_L 7351INTERCEPTOR(SIZE_T, __strxfrm_l, char *dest, const char *src, SIZE_T len, 7352 void *locale) { 7353 STRXFRM_INTERCEPTOR_IMPL(__strxfrm_l, dest, src, len, locale); 7354} 7355 7356#define INIT___STRXFRM_L COMMON_INTERCEPT_FUNCTION(__strxfrm_l); 7357#else 7358#define INIT___STRXFRM_L 7359#endif 7360 7361#if SANITIZER_INTERCEPT_WCSXFRM 7362INTERCEPTOR(SIZE_T, wcsxfrm, wchar_t *dest, const wchar_t *src, SIZE_T len) { 7363 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm, dest, src, len); 7364} 7365 7366INTERCEPTOR(SIZE_T, wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len, 7367 void *locale) { 7368 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm_l, dest, src, len, locale); 7369} 7370 7371#define INIT_WCSXFRM \ 7372 COMMON_INTERCEPT_FUNCTION(wcsxfrm); \ 7373 COMMON_INTERCEPT_FUNCTION(wcsxfrm_l); 7374#else 7375#define INIT_WCSXFRM 7376#endif 7377 7378#if SANITIZER_INTERCEPT___WCSXFRM_L 7379INTERCEPTOR(SIZE_T, __wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len, 7380 void *locale) { 7381 STRXFRM_INTERCEPTOR_IMPL(__wcsxfrm_l, dest, src, len, locale); 7382} 7383 7384#define INIT___WCSXFRM_L COMMON_INTERCEPT_FUNCTION(__wcsxfrm_l); 7385#else 7386#define INIT___WCSXFRM_L 7387#endif 7388 7389#if SANITIZER_INTERCEPT_ACCT 7390INTERCEPTOR(int, acct, const char *file) { 7391 void *ctx; 7392 COMMON_INTERCEPTOR_ENTER(ctx, acct, file); 7393 if (file) 7394 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1); 7395 return REAL(acct)(file); 7396} 7397#define INIT_ACCT COMMON_INTERCEPT_FUNCTION(acct) 7398#else 7399#define INIT_ACCT 7400#endif 7401 7402#if SANITIZER_INTERCEPT_USER_FROM_UID 7403INTERCEPTOR(const char *, user_from_uid, u32 uid, int nouser) { 7404 void *ctx; 7405 const char *user; 7406 COMMON_INTERCEPTOR_ENTER(ctx, user_from_uid, uid, nouser); 7407 user = REAL(user_from_uid)(uid, nouser); 7408 if (user) 7409 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, user, internal_strlen(user) + 1); 7410 return user; 7411} 7412#define INIT_USER_FROM_UID COMMON_INTERCEPT_FUNCTION(user_from_uid) 7413#else 7414#define INIT_USER_FROM_UID 7415#endif 7416 7417#if SANITIZER_INTERCEPT_UID_FROM_USER 7418INTERCEPTOR(int, uid_from_user, const char *name, u32 *uid) { 7419 void *ctx; 7420 int res; 7421 COMMON_INTERCEPTOR_ENTER(ctx, uid_from_user, name, uid); 7422 if (name) 7423 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7424 res = REAL(uid_from_user)(name, uid); 7425 if (uid) 7426 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, uid, sizeof(*uid)); 7427 return res; 7428} 7429#define INIT_UID_FROM_USER COMMON_INTERCEPT_FUNCTION(uid_from_user) 7430#else 7431#define INIT_UID_FROM_USER 7432#endif 7433 7434#if SANITIZER_INTERCEPT_GROUP_FROM_GID 7435INTERCEPTOR(const char *, group_from_gid, u32 gid, int nogroup) { 7436 void *ctx; 7437 const char *group; 7438 COMMON_INTERCEPTOR_ENTER(ctx, group_from_gid, gid, nogroup); 7439 group = REAL(group_from_gid)(gid, nogroup); 7440 if (group) 7441 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, group, internal_strlen(group) + 1); 7442 return group; 7443} 7444#define INIT_GROUP_FROM_GID COMMON_INTERCEPT_FUNCTION(group_from_gid) 7445#else 7446#define INIT_GROUP_FROM_GID 7447#endif 7448 7449#if SANITIZER_INTERCEPT_GID_FROM_GROUP 7450INTERCEPTOR(int, gid_from_group, const char *group, u32 *gid) { 7451 void *ctx; 7452 int res; 7453 COMMON_INTERCEPTOR_ENTER(ctx, gid_from_group, group, gid); 7454 if (group) 7455 COMMON_INTERCEPTOR_READ_RANGE(ctx, group, internal_strlen(group) + 1); 7456 res = REAL(gid_from_group)(group, gid); 7457 if (gid) 7458 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, gid, sizeof(*gid)); 7459 return res; 7460} 7461#define INIT_GID_FROM_GROUP COMMON_INTERCEPT_FUNCTION(gid_from_group) 7462#else 7463#define INIT_GID_FROM_GROUP 7464#endif 7465 7466#if SANITIZER_INTERCEPT_ACCESS 7467INTERCEPTOR(int, access, const char *path, int mode) { 7468 void *ctx; 7469 COMMON_INTERCEPTOR_ENTER(ctx, access, path, mode); 7470 if (path) 7471 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 7472 return REAL(access)(path, mode); 7473} 7474#define INIT_ACCESS COMMON_INTERCEPT_FUNCTION(access) 7475#else 7476#define INIT_ACCESS 7477#endif 7478 7479#if SANITIZER_INTERCEPT_FACCESSAT 7480INTERCEPTOR(int, faccessat, int fd, const char *path, int mode, int flags) { 7481 void *ctx; 7482 COMMON_INTERCEPTOR_ENTER(ctx, faccessat, fd, path, mode, flags); 7483 if (path) 7484 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 7485 return REAL(faccessat)(fd, path, mode, flags); 7486} 7487#define INIT_FACCESSAT COMMON_INTERCEPT_FUNCTION(faccessat) 7488#else 7489#define INIT_FACCESSAT 7490#endif 7491 7492#if SANITIZER_INTERCEPT_GETGROUPLIST 7493INTERCEPTOR(int, getgrouplist, const char *name, u32 basegid, u32 *groups, 7494 int *ngroups) { 7495 void *ctx; 7496 int res; 7497 COMMON_INTERCEPTOR_ENTER(ctx, getgrouplist, name, basegid, groups, ngroups); 7498 if (name) 7499 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7500 if (ngroups) 7501 COMMON_INTERCEPTOR_READ_RANGE(ctx, ngroups, sizeof(*ngroups)); 7502 res = REAL(getgrouplist)(name, basegid, groups, ngroups); 7503 if (!res && groups && ngroups) { 7504 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups)); 7505 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups)); 7506 } 7507 return res; 7508} 7509 7510#define INIT_GETGROUPLIST COMMON_INTERCEPT_FUNCTION(getgrouplist); 7511#else 7512#define INIT_GETGROUPLIST 7513#endif 7514 7515#if SANITIZER_INTERCEPT_GETGROUPMEMBERSHIP 7516INTERCEPTOR(int, getgroupmembership, const char *name, u32 basegid, u32 *groups, 7517 int maxgrp, int *ngroups) { 7518 void *ctx; 7519 int res; 7520 COMMON_INTERCEPTOR_ENTER(ctx, getgroupmembership, name, basegid, groups, 7521 maxgrp, ngroups); 7522 if (name) 7523 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7524 res = REAL(getgroupmembership)(name, basegid, groups, maxgrp, ngroups); 7525 if (!res && groups && ngroups) { 7526 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups)); 7527 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups)); 7528 } 7529 return res; 7530} 7531 7532#define INIT_GETGROUPMEMBERSHIP COMMON_INTERCEPT_FUNCTION(getgroupmembership); 7533#else 7534#define INIT_GETGROUPMEMBERSHIP 7535#endif 7536 7537#if SANITIZER_INTERCEPT_READLINK 7538INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) { 7539 void* ctx; 7540 COMMON_INTERCEPTOR_ENTER(ctx, readlink, path, buf, bufsiz); 7541 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 7542 SSIZE_T res = REAL(readlink)(path, buf, bufsiz); 7543 if (res > 0) 7544 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); 7545 return res; 7546} 7547 7548#define INIT_READLINK COMMON_INTERCEPT_FUNCTION(readlink) 7549#else 7550#define INIT_READLINK 7551#endif 7552 7553#if SANITIZER_INTERCEPT_READLINKAT 7554INTERCEPTOR(SSIZE_T, readlinkat, int dirfd, const char *path, char *buf, 7555 SIZE_T bufsiz) { 7556 void* ctx; 7557 COMMON_INTERCEPTOR_ENTER(ctx, readlinkat, dirfd, path, buf, bufsiz); 7558 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 7559 SSIZE_T res = REAL(readlinkat)(dirfd, path, buf, bufsiz); 7560 if (res > 0) 7561 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); 7562 return res; 7563} 7564 7565#define INIT_READLINKAT COMMON_INTERCEPT_FUNCTION(readlinkat) 7566#else 7567#define INIT_READLINKAT 7568#endif 7569 7570#if SANITIZER_INTERCEPT_NAME_TO_HANDLE_AT 7571INTERCEPTOR(int, name_to_handle_at, int dirfd, const char *pathname, 7572 struct file_handle *handle, int *mount_id, int flags) { 7573 void* ctx; 7574 COMMON_INTERCEPTOR_ENTER(ctx, name_to_handle_at, dirfd, pathname, handle, 7575 mount_id, flags); 7576 COMMON_INTERCEPTOR_READ_RANGE(ctx, pathname, internal_strlen(pathname) + 1); 7577 7578 __sanitizer_file_handle *sanitizer_handle = 7579 reinterpret_cast<__sanitizer_file_handle*>(handle); 7580 COMMON_INTERCEPTOR_READ_RANGE( 7581 ctx, &sanitizer_handle->handle_bytes, 7582 sizeof(sanitizer_handle->handle_bytes)); 7583 7584 int res = REAL(name_to_handle_at)(dirfd, pathname, handle, mount_id, flags); 7585 if (!res) { 7586 COMMON_INTERCEPTOR_WRITE_RANGE( 7587 ctx, &sanitizer_handle->handle_bytes, 7588 sizeof(sanitizer_handle->handle_bytes)); 7589 COMMON_INTERCEPTOR_WRITE_RANGE( 7590 ctx, &sanitizer_handle->handle_type, 7591 sizeof(sanitizer_handle->handle_type)); 7592 COMMON_INTERCEPTOR_WRITE_RANGE( 7593 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes); 7594 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mount_id, sizeof(*mount_id)); 7595 } 7596 return res; 7597} 7598 7599#define INIT_NAME_TO_HANDLE_AT COMMON_INTERCEPT_FUNCTION(name_to_handle_at) 7600#else 7601#define INIT_NAME_TO_HANDLE_AT 7602#endif 7603 7604#if SANITIZER_INTERCEPT_OPEN_BY_HANDLE_AT 7605INTERCEPTOR(int, open_by_handle_at, int mount_fd, struct file_handle* handle, 7606 int flags) { 7607 void* ctx; 7608 COMMON_INTERCEPTOR_ENTER(ctx, open_by_handle_at, mount_fd, handle, flags); 7609 7610 __sanitizer_file_handle *sanitizer_handle = 7611 reinterpret_cast<__sanitizer_file_handle*>(handle); 7612 COMMON_INTERCEPTOR_READ_RANGE( 7613 ctx, &sanitizer_handle->handle_bytes, 7614 sizeof(sanitizer_handle->handle_bytes)); 7615 COMMON_INTERCEPTOR_READ_RANGE( 7616 ctx, &sanitizer_handle->handle_type, 7617 sizeof(sanitizer_handle->handle_type)); 7618 COMMON_INTERCEPTOR_READ_RANGE( 7619 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes); 7620 7621 return REAL(open_by_handle_at)(mount_fd, handle, flags); 7622} 7623 7624#define INIT_OPEN_BY_HANDLE_AT COMMON_INTERCEPT_FUNCTION(open_by_handle_at) 7625#else 7626#define INIT_OPEN_BY_HANDLE_AT 7627#endif 7628 7629#if SANITIZER_INTERCEPT_STRLCPY 7630INTERCEPTOR(SIZE_T, strlcpy, char *dst, char *src, SIZE_T size) { 7631 void *ctx; 7632 SIZE_T res; 7633 COMMON_INTERCEPTOR_ENTER(ctx, strlcpy, dst, src, size); 7634 if (src) { 7635 // Keep strnlen as macro argument, as macro may ignore it. 7636 COMMON_INTERCEPTOR_READ_STRING( 7637 ctx, src, Min(internal_strnlen(src, size), size - 1) + 1); 7638 } 7639 res = REAL(strlcpy)(dst, src, size); 7640 COMMON_INTERCEPTOR_COPY_STRING(ctx, dst, src, internal_strlen(dst) + 1); 7641 return res; 7642} 7643 7644INTERCEPTOR(SIZE_T, strlcat, char *dst, char *src, SIZE_T size) { 7645 void *ctx; 7646 SIZE_T len = 0; 7647 COMMON_INTERCEPTOR_ENTER(ctx, strlcat, dst, src, size); 7648 // src is checked in the strlcpy() interceptor 7649 if (dst) { 7650 len = internal_strnlen(dst, size); 7651 COMMON_INTERCEPTOR_READ_STRING(ctx, dst, Min(len, size - 1) + 1); 7652 } 7653 // Reuse the rest of the code in the strlcpy() interceptor 7654 return WRAP(strlcpy)(dst + len, src, size - len) + len; 7655} 7656#define INIT_STRLCPY \ 7657 COMMON_INTERCEPT_FUNCTION(strlcpy); \ 7658 COMMON_INTERCEPT_FUNCTION(strlcat); 7659#else 7660#define INIT_STRLCPY 7661#endif 7662 7663#if SANITIZER_INTERCEPT_MMAP 7664INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags, int fd, 7665 OFF_T off) { 7666 void *ctx; 7667 if (common_flags()->detect_write_exec) 7668 ReportMmapWriteExec(prot, flags); 7669 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7670 return (void *)internal_mmap(addr, sz, prot, flags, fd, off); 7671 COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off); 7672 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, off); 7673} 7674 7675INTERCEPTOR(int, mprotect, void *addr, SIZE_T sz, int prot) { 7676 void *ctx; 7677 if (common_flags()->detect_write_exec) 7678 ReportMmapWriteExec(prot, 0); 7679 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7680 return (int)internal_mprotect(addr, sz, prot); 7681 COMMON_INTERCEPTOR_ENTER(ctx, mprotect, addr, sz, prot); 7682 MprotectMallocZones(addr, prot); 7683 return REAL(mprotect)(addr, sz, prot); 7684} 7685#define INIT_MMAP \ 7686 COMMON_INTERCEPT_FUNCTION(mmap); \ 7687 COMMON_INTERCEPT_FUNCTION(mprotect); 7688#else 7689#define INIT_MMAP 7690#endif 7691 7692#if SANITIZER_INTERCEPT_MMAP64 7693INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags, int fd, 7694 OFF64_T off) { 7695 void *ctx; 7696 if (common_flags()->detect_write_exec) 7697 ReportMmapWriteExec(prot, flags); 7698 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7699 return (void *)internal_mmap(addr, sz, prot, flags, fd, off); 7700 COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off); 7701 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap64, addr, sz, prot, flags, fd, off); 7702} 7703#define INIT_MMAP64 COMMON_INTERCEPT_FUNCTION(mmap64); 7704#else 7705#define INIT_MMAP64 7706#endif 7707 7708#if SANITIZER_INTERCEPT_DEVNAME 7709INTERCEPTOR(char *, devname, u64 dev, u32 type) { 7710 void *ctx; 7711 char *name; 7712 COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type); 7713 name = REAL(devname)(dev, type); 7714 if (name) 7715 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); 7716 return name; 7717} 7718#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname); 7719#else 7720#define INIT_DEVNAME 7721#endif 7722 7723#if SANITIZER_INTERCEPT_DEVNAME_R 7724#if SANITIZER_NETBSD 7725#define DEVNAME_R_RETTYPE int 7726#define DEVNAME_R_SUCCESS(x) (!(x)) 7727#else 7728#define DEVNAME_R_RETTYPE char* 7729#define DEVNAME_R_SUCCESS(x) (x) 7730#endif 7731INTERCEPTOR(DEVNAME_R_RETTYPE, devname_r, u64 dev, u32 type, char *path, 7732 uptr len) { 7733 void *ctx; 7734 COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len); 7735 DEVNAME_R_RETTYPE res = REAL(devname_r)(dev, type, path, len); 7736 if (DEVNAME_R_SUCCESS(res)) 7737 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, internal_strlen(path) + 1); 7738 return res; 7739} 7740#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r); 7741#else 7742#define INIT_DEVNAME_R 7743#endif 7744 7745#if SANITIZER_INTERCEPT_FGETLN 7746INTERCEPTOR(char *, fgetln, __sanitizer_FILE *stream, SIZE_T *len) { 7747 void *ctx; 7748 COMMON_INTERCEPTOR_ENTER(ctx, fgetln, stream, len); 7749 char *str = REAL(fgetln)(stream, len); 7750 if (str && len) { 7751 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 7752 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, *len); 7753 } 7754 return str; 7755} 7756#define INIT_FGETLN COMMON_INTERCEPT_FUNCTION(fgetln) 7757#else 7758#define INIT_FGETLN 7759#endif 7760 7761#if SANITIZER_INTERCEPT_STRMODE 7762INTERCEPTOR(void, strmode, u32 mode, char *bp) { 7763 void *ctx; 7764 COMMON_INTERCEPTOR_ENTER(ctx, strmode, mode, bp); 7765 REAL(strmode)(mode, bp); 7766 if (bp) 7767 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, bp, internal_strlen(bp) + 1); 7768} 7769#define INIT_STRMODE COMMON_INTERCEPT_FUNCTION(strmode) 7770#else 7771#define INIT_STRMODE 7772#endif 7773 7774#if SANITIZER_INTERCEPT_TTYENT 7775INTERCEPTOR(struct __sanitizer_ttyent *, getttyent, void) { 7776 void *ctx; 7777 COMMON_INTERCEPTOR_ENTER(ctx, getttyent); 7778 struct __sanitizer_ttyent *ttyent = REAL(getttyent)(); 7779 if (ttyent) 7780 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz); 7781 return ttyent; 7782} 7783INTERCEPTOR(struct __sanitizer_ttyent *, getttynam, char *name) { 7784 void *ctx; 7785 COMMON_INTERCEPTOR_ENTER(ctx, getttynam, name); 7786 if (name) 7787 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7788 struct __sanitizer_ttyent *ttyent = REAL(getttynam)(name); 7789 if (ttyent) 7790 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz); 7791 return ttyent; 7792} 7793#define INIT_TTYENT \ 7794 COMMON_INTERCEPT_FUNCTION(getttyent); \ 7795 COMMON_INTERCEPT_FUNCTION(getttynam); 7796#else 7797#define INIT_TTYENT 7798#endif 7799 7800#if SANITIZER_INTERCEPT_TTYENTPATH 7801INTERCEPTOR(int, setttyentpath, char *path) { 7802 void *ctx; 7803 COMMON_INTERCEPTOR_ENTER(ctx, setttyentpath, path); 7804 if (path) 7805 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 7806 return REAL(setttyentpath)(path); 7807} 7808#define INIT_TTYENTPATH COMMON_INTERCEPT_FUNCTION(setttyentpath); 7809#else 7810#define INIT_TTYENTPATH 7811#endif 7812 7813#if SANITIZER_INTERCEPT_PROTOENT 7814static void write_protoent(void *ctx, struct __sanitizer_protoent *p) { 7815 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 7816 7817 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, internal_strlen(p->p_name) + 1); 7818 7819 SIZE_T pp_size = 1; // One handles the trailing \0 7820 7821 for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size) 7822 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, internal_strlen(*pp) + 1); 7823 7824 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, 7825 pp_size * sizeof(char **)); 7826} 7827 7828INTERCEPTOR(struct __sanitizer_protoent *, getprotoent) { 7829 void *ctx; 7830 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent); 7831 struct __sanitizer_protoent *p = REAL(getprotoent)(); 7832 if (p) 7833 write_protoent(ctx, p); 7834 return p; 7835} 7836 7837INTERCEPTOR(struct __sanitizer_protoent *, getprotobyname, const char *name) { 7838 void *ctx; 7839 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname, name); 7840 if (name) 7841 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7842 struct __sanitizer_protoent *p = REAL(getprotobyname)(name); 7843 if (p) 7844 write_protoent(ctx, p); 7845 return p; 7846} 7847 7848INTERCEPTOR(struct __sanitizer_protoent *, getprotobynumber, int proto) { 7849 void *ctx; 7850 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber, proto); 7851 struct __sanitizer_protoent *p = REAL(getprotobynumber)(proto); 7852 if (p) 7853 write_protoent(ctx, p); 7854 return p; 7855} 7856#define INIT_PROTOENT \ 7857 COMMON_INTERCEPT_FUNCTION(getprotoent); \ 7858 COMMON_INTERCEPT_FUNCTION(getprotobyname); \ 7859 COMMON_INTERCEPT_FUNCTION(getprotobynumber) 7860#else 7861#define INIT_PROTOENT 7862#endif 7863 7864#if SANITIZER_INTERCEPT_PROTOENT_R 7865INTERCEPTOR(int, getprotoent_r, struct __sanitizer_protoent *result_buf, 7866 char *buf, SIZE_T buflen, struct __sanitizer_protoent **result) { 7867 void *ctx; 7868 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent_r, result_buf, buf, buflen, 7869 result); 7870 int res = REAL(getprotoent_r)(result_buf, buf, buflen, result); 7871 7872 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result); 7873 if (!res && *result) 7874 write_protoent(ctx, *result); 7875 return res; 7876} 7877 7878INTERCEPTOR(int, getprotobyname_r, const char *name, 7879 struct __sanitizer_protoent *result_buf, char *buf, SIZE_T buflen, 7880 struct __sanitizer_protoent **result) { 7881 void *ctx; 7882 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname_r, name, result_buf, buf, 7883 buflen, result); 7884 if (name) 7885 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7886 int res = REAL(getprotobyname_r)(name, result_buf, buf, buflen, result); 7887 7888 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result); 7889 if (!res && *result) 7890 write_protoent(ctx, *result); 7891 return res; 7892} 7893 7894INTERCEPTOR(int, getprotobynumber_r, int num, 7895 struct __sanitizer_protoent *result_buf, char *buf, 7896 SIZE_T buflen, struct __sanitizer_protoent **result) { 7897 void *ctx; 7898 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber_r, num, result_buf, buf, 7899 buflen, result); 7900 int res = REAL(getprotobynumber_r)(num, result_buf, buf, buflen, result); 7901 7902 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result); 7903 if (!res && *result) 7904 write_protoent(ctx, *result); 7905 return res; 7906} 7907 7908#define INIT_PROTOENT_R \ 7909 COMMON_INTERCEPT_FUNCTION(getprotoent_r); \ 7910 COMMON_INTERCEPT_FUNCTION(getprotobyname_r); \ 7911 COMMON_INTERCEPT_FUNCTION(getprotobynumber_r); 7912#else 7913#define INIT_PROTOENT_R 7914#endif 7915 7916#if SANITIZER_INTERCEPT_NETENT 7917INTERCEPTOR(struct __sanitizer_netent *, getnetent) { 7918 void *ctx; 7919 COMMON_INTERCEPTOR_ENTER(ctx, getnetent); 7920 struct __sanitizer_netent *n = REAL(getnetent)(); 7921 if (n) { 7922 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 7923 7924 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1); 7925 7926 SIZE_T nn_size = 1; // One handles the trailing \0 7927 7928 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) 7929 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1); 7930 7931 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, 7932 nn_size * sizeof(char **)); 7933 } 7934 return n; 7935} 7936 7937INTERCEPTOR(struct __sanitizer_netent *, getnetbyname, const char *name) { 7938 void *ctx; 7939 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyname, name); 7940 if (name) 7941 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 7942 struct __sanitizer_netent *n = REAL(getnetbyname)(name); 7943 if (n) { 7944 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 7945 7946 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1); 7947 7948 SIZE_T nn_size = 1; // One handles the trailing \0 7949 7950 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) 7951 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1); 7952 7953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, 7954 nn_size * sizeof(char **)); 7955 } 7956 return n; 7957} 7958 7959INTERCEPTOR(struct __sanitizer_netent *, getnetbyaddr, u32 net, int type) { 7960 void *ctx; 7961 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyaddr, net, type); 7962 struct __sanitizer_netent *n = REAL(getnetbyaddr)(net, type); 7963 if (n) { 7964 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 7965 7966 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1); 7967 7968 SIZE_T nn_size = 1; // One handles the trailing \0 7969 7970 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) 7971 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1); 7972 7973 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, 7974 nn_size * sizeof(char **)); 7975 } 7976 return n; 7977} 7978#define INIT_NETENT \ 7979 COMMON_INTERCEPT_FUNCTION(getnetent); \ 7980 COMMON_INTERCEPT_FUNCTION(getnetbyname); \ 7981 COMMON_INTERCEPT_FUNCTION(getnetbyaddr) 7982#else 7983#define INIT_NETENT 7984#endif 7985 7986#if SANITIZER_INTERCEPT_GETMNTINFO 7987INTERCEPTOR(int, getmntinfo, void **mntbufp, int flags) { 7988 void *ctx; 7989 COMMON_INTERCEPTOR_ENTER(ctx, getmntinfo, mntbufp, flags); 7990 int cnt = REAL(getmntinfo)(mntbufp, flags); 7991 if (cnt > 0 && mntbufp) { 7992 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mntbufp, sizeof(void *)); 7993 if (*mntbufp) 7994#if SANITIZER_NETBSD 7995 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statvfs_sz); 7996#else 7997 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statfs_sz); 7998#endif 7999 } 8000 return cnt; 8001} 8002#define INIT_GETMNTINFO COMMON_INTERCEPT_FUNCTION(getmntinfo) 8003#else 8004#define INIT_GETMNTINFO 8005#endif 8006 8007#if SANITIZER_INTERCEPT_MI_VECTOR_HASH 8008INTERCEPTOR(void, mi_vector_hash, const void *key, SIZE_T len, u32 seed, 8009 u32 hashes[3]) { 8010 void *ctx; 8011 COMMON_INTERCEPTOR_ENTER(ctx, mi_vector_hash, key, len, seed, hashes); 8012 if (key) 8013 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, len); 8014 REAL(mi_vector_hash)(key, len, seed, hashes); 8015 if (hashes) 8016 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hashes, sizeof(hashes[0]) * 3); 8017} 8018#define INIT_MI_VECTOR_HASH COMMON_INTERCEPT_FUNCTION(mi_vector_hash) 8019#else 8020#define INIT_MI_VECTOR_HASH 8021#endif 8022 8023#if SANITIZER_INTERCEPT_SETVBUF 8024INTERCEPTOR(int, setvbuf, __sanitizer_FILE *stream, char *buf, int mode, 8025 SIZE_T size) { 8026 void *ctx; 8027 COMMON_INTERCEPTOR_ENTER(ctx, setvbuf, stream, buf, mode, size); 8028 int ret = REAL(setvbuf)(stream, buf, mode, size); 8029 if (buf) 8030 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size); 8031 if (stream) 8032 unpoison_file(stream); 8033 return ret; 8034} 8035 8036INTERCEPTOR(void, setbuf, __sanitizer_FILE *stream, char *buf) { 8037 void *ctx; 8038 COMMON_INTERCEPTOR_ENTER(ctx, setbuf, stream, buf); 8039 REAL(setbuf)(stream, buf); 8040 if (buf) { 8041 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz); 8042 } 8043 if (stream) 8044 unpoison_file(stream); 8045} 8046 8047INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf, SIZE_T size) { 8048 void *ctx; 8049 COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, size); 8050 REAL(setbuffer)(stream, buf, size); 8051 if (buf) { 8052 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size); 8053 } 8054 if (stream) 8055 unpoison_file(stream); 8056} 8057 8058INTERCEPTOR(void, setlinebuf, __sanitizer_FILE *stream) { 8059 void *ctx; 8060 COMMON_INTERCEPTOR_ENTER(ctx, setlinebuf, stream); 8061 REAL(setlinebuf)(stream); 8062 if (stream) 8063 unpoison_file(stream); 8064} 8065#define INIT_SETVBUF COMMON_INTERCEPT_FUNCTION(setvbuf); \ 8066 COMMON_INTERCEPT_FUNCTION(setbuf); \ 8067 COMMON_INTERCEPT_FUNCTION(setbuffer); \ 8068 COMMON_INTERCEPT_FUNCTION(setlinebuf) 8069#else 8070#define INIT_SETVBUF 8071#endif 8072 8073#if SANITIZER_INTERCEPT_GETVFSSTAT 8074INTERCEPTOR(int, getvfsstat, void *buf, SIZE_T bufsize, int flags) { 8075 void *ctx; 8076 COMMON_INTERCEPTOR_ENTER(ctx, getvfsstat, buf, bufsize, flags); 8077 int ret = REAL(getvfsstat)(buf, bufsize, flags); 8078 if (buf && ret > 0) 8079 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, ret * struct_statvfs_sz); 8080 return ret; 8081} 8082#define INIT_GETVFSSTAT COMMON_INTERCEPT_FUNCTION(getvfsstat) 8083#else 8084#define INIT_GETVFSSTAT 8085#endif 8086 8087#if SANITIZER_INTERCEPT_REGEX 8088INTERCEPTOR(int, regcomp, void *preg, const char *pattern, int cflags) { 8089 void *ctx; 8090 COMMON_INTERCEPTOR_ENTER(ctx, regcomp, preg, pattern, cflags); 8091 if (pattern) 8092 COMMON_INTERCEPTOR_READ_RANGE(ctx, pattern, internal_strlen(pattern) + 1); 8093 int res = REAL(regcomp)(preg, pattern, cflags); 8094 if (preg) 8095 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, preg, struct_regex_sz); 8096 return res; 8097} 8098INTERCEPTOR(int, regexec, const void *preg, const char *string, SIZE_T nmatch, 8099 struct __sanitizer_regmatch *pmatch[], int eflags) { 8100 void *ctx; 8101 COMMON_INTERCEPTOR_ENTER(ctx, regexec, preg, string, nmatch, pmatch, eflags); 8102 if (preg) 8103 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); 8104 if (string) 8105 COMMON_INTERCEPTOR_READ_RANGE(ctx, string, internal_strlen(string) + 1); 8106 int res = REAL(regexec)(preg, string, nmatch, pmatch, eflags); 8107 if (!res && pmatch) 8108 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pmatch, nmatch * struct_regmatch_sz); 8109 return res; 8110} 8111INTERCEPTOR(SIZE_T, regerror, int errcode, const void *preg, char *errbuf, 8112 SIZE_T errbuf_size) { 8113 void *ctx; 8114 COMMON_INTERCEPTOR_ENTER(ctx, regerror, errcode, preg, errbuf, errbuf_size); 8115 if (preg) 8116 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); 8117 SIZE_T res = REAL(regerror)(errcode, preg, errbuf, errbuf_size); 8118 if (errbuf) 8119 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errbuf, internal_strlen(errbuf) + 1); 8120 return res; 8121} 8122INTERCEPTOR(void, regfree, const void *preg) { 8123 void *ctx; 8124 COMMON_INTERCEPTOR_ENTER(ctx, regfree, preg); 8125 if (preg) 8126 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); 8127 REAL(regfree)(preg); 8128} 8129#define INIT_REGEX \ 8130 COMMON_INTERCEPT_FUNCTION(regcomp); \ 8131 COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(regexec, "GLIBC_2.3.4"); \ 8132 COMMON_INTERCEPT_FUNCTION(regerror); \ 8133 COMMON_INTERCEPT_FUNCTION(regfree); 8134#else 8135#define INIT_REGEX 8136#endif 8137 8138#if SANITIZER_INTERCEPT_REGEXSUB 8139INTERCEPTOR(SSIZE_T, regnsub, char *buf, SIZE_T bufsiz, const char *sub, 8140 const struct __sanitizer_regmatch *rm, const char *str) { 8141 void *ctx; 8142 COMMON_INTERCEPTOR_ENTER(ctx, regnsub, buf, bufsiz, sub, rm, str); 8143 if (sub) 8144 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1); 8145 // The implementation demands and hardcodes 10 elements 8146 if (rm) 8147 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz); 8148 if (str) 8149 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1); 8150 SSIZE_T res = REAL(regnsub)(buf, bufsiz, sub, rm, str); 8151 if (res > 0 && buf) 8152 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1); 8153 return res; 8154} 8155INTERCEPTOR(SSIZE_T, regasub, char **buf, const char *sub, 8156 const struct __sanitizer_regmatch *rm, const char *sstr) { 8157 void *ctx; 8158 COMMON_INTERCEPTOR_ENTER(ctx, regasub, buf, sub, rm, sstr); 8159 if (sub) 8160 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1); 8161 // Hardcode 10 elements as this is hardcoded size 8162 if (rm) 8163 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz); 8164 if (sstr) 8165 COMMON_INTERCEPTOR_READ_RANGE(ctx, sstr, internal_strlen(sstr) + 1); 8166 SSIZE_T res = REAL(regasub)(buf, sub, rm, sstr); 8167 if (res > 0 && buf) { 8168 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sizeof(char *)); 8169 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *buf, internal_strlen(*buf) + 1); 8170 } 8171 return res; 8172} 8173 8174#define INIT_REGEXSUB \ 8175 COMMON_INTERCEPT_FUNCTION(regnsub); \ 8176 COMMON_INTERCEPT_FUNCTION(regasub); 8177#else 8178#define INIT_REGEXSUB 8179#endif 8180 8181#if SANITIZER_INTERCEPT_FTS 8182INTERCEPTOR(void *, fts_open, char *const *path_argv, int options, 8183 int (*compar)(void **, void **)) { 8184 void *ctx; 8185 COMMON_INTERCEPTOR_ENTER(ctx, fts_open, path_argv, options, compar); 8186 if (path_argv) { 8187 for (char *const *pa = path_argv; ; ++pa) { 8188 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); 8189 if (!*pa) 8190 break; 8191 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1); 8192 } 8193 } 8194 // TODO(kamil): handle compar callback 8195 void *fts = REAL(fts_open)(path_argv, options, compar); 8196 if (fts) 8197 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, fts, struct_FTS_sz); 8198 return fts; 8199} 8200 8201INTERCEPTOR(void *, fts_read, void *ftsp) { 8202 void *ctx; 8203 COMMON_INTERCEPTOR_ENTER(ctx, fts_read, ftsp); 8204 if (ftsp) 8205 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 8206 void *ftsent = REAL(fts_read)(ftsp); 8207 if (ftsent) 8208 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz); 8209 return ftsent; 8210} 8211 8212INTERCEPTOR(void *, fts_children, void *ftsp, int options) { 8213 void *ctx; 8214 COMMON_INTERCEPTOR_ENTER(ctx, fts_children, ftsp, options); 8215 if (ftsp) 8216 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 8217 void *ftsent = REAL(fts_children)(ftsp, options); 8218 if (ftsent) 8219 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz); 8220 return ftsent; 8221} 8222 8223INTERCEPTOR(int, fts_set, void *ftsp, void *f, int options) { 8224 void *ctx; 8225 COMMON_INTERCEPTOR_ENTER(ctx, fts_set, ftsp, f, options); 8226 if (ftsp) 8227 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 8228 if (f) 8229 COMMON_INTERCEPTOR_READ_RANGE(ctx, f, struct_FTSENT_sz); 8230 return REAL(fts_set)(ftsp, f, options); 8231} 8232 8233INTERCEPTOR(int, fts_close, void *ftsp) { 8234 void *ctx; 8235 COMMON_INTERCEPTOR_ENTER(ctx, fts_close, ftsp); 8236 if (ftsp) 8237 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 8238 return REAL(fts_close)(ftsp); 8239} 8240#define INIT_FTS \ 8241 COMMON_INTERCEPT_FUNCTION(fts_open); \ 8242 COMMON_INTERCEPT_FUNCTION(fts_read); \ 8243 COMMON_INTERCEPT_FUNCTION(fts_children); \ 8244 COMMON_INTERCEPT_FUNCTION(fts_set); \ 8245 COMMON_INTERCEPT_FUNCTION(fts_close); 8246#else 8247#define INIT_FTS 8248#endif 8249 8250#if SANITIZER_INTERCEPT_SYSCTL 8251INTERCEPTOR(int, sysctl, int *name, unsigned int namelen, void *oldp, 8252 SIZE_T *oldlenp, void *newp, SIZE_T newlen) { 8253 void *ctx; 8254 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 8255 return internal_sysctl(name, namelen, oldp, oldlenp, newp, newlen); 8256 COMMON_INTERCEPTOR_ENTER(ctx, sysctl, name, namelen, oldp, oldlenp, newp, 8257 newlen); 8258 if (name) 8259 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, namelen * sizeof(*name)); 8260 if (oldlenp) 8261 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 8262 if (newp && newlen) 8263 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen); 8264 int res = REAL(sysctl)(name, namelen, oldp, oldlenp, newp, newlen); 8265 if (!res) { 8266 if (oldlenp) { 8267 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 8268 if (oldp) 8269 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp); 8270 } 8271 } 8272 return res; 8273} 8274 8275INTERCEPTOR(int, sysctlbyname, char *sname, void *oldp, SIZE_T *oldlenp, 8276 void *newp, SIZE_T newlen) { 8277 void *ctx; 8278 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 8279 return internal_sysctlbyname(sname, oldp, oldlenp, newp, newlen); 8280 COMMON_INTERCEPTOR_ENTER(ctx, sysctlbyname, sname, oldp, oldlenp, newp, 8281 newlen); 8282 if (sname) 8283 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); 8284 if (oldlenp) 8285 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 8286 if (newp && newlen) 8287 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen); 8288 int res = REAL(sysctlbyname)(sname, oldp, oldlenp, newp, newlen); 8289 if (!res) { 8290 if (oldlenp) { 8291 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 8292 if (oldp) 8293 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp); 8294 } 8295 } 8296 return res; 8297} 8298 8299INTERCEPTOR(int, sysctlnametomib, const char *sname, int *name, 8300 SIZE_T *namelenp) { 8301 void *ctx; 8302 COMMON_INTERCEPTOR_ENTER(ctx, sysctlnametomib, sname, name, namelenp); 8303 if (sname) 8304 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); 8305 if (namelenp) 8306 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp)); 8307 int res = REAL(sysctlnametomib)(sname, name, namelenp); 8308 if (!res) { 8309 if (namelenp) { 8310 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp)); 8311 if (name) 8312 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name)); 8313 } 8314 } 8315 return res; 8316} 8317 8318#define INIT_SYSCTL \ 8319 COMMON_INTERCEPT_FUNCTION(sysctl); \ 8320 COMMON_INTERCEPT_FUNCTION(sysctlbyname); \ 8321 COMMON_INTERCEPT_FUNCTION(sysctlnametomib); 8322#else 8323#define INIT_SYSCTL 8324#endif 8325 8326#if SANITIZER_INTERCEPT_ASYSCTL 8327INTERCEPTOR(void *, asysctl, const int *name, SIZE_T namelen, SIZE_T *len) { 8328 void *ctx; 8329 COMMON_INTERCEPTOR_ENTER(ctx, asysctl, name, namelen, len); 8330 if (name) 8331 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, sizeof(*name) * namelen); 8332 void *res = REAL(asysctl)(name, namelen, len); 8333 if (res && len) { 8334 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 8335 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len); 8336 } 8337 return res; 8338} 8339 8340INTERCEPTOR(void *, asysctlbyname, const char *sname, SIZE_T *len) { 8341 void *ctx; 8342 COMMON_INTERCEPTOR_ENTER(ctx, asysctlbyname, sname, len); 8343 if (sname) 8344 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); 8345 void *res = REAL(asysctlbyname)(sname, len); 8346 if (res && len) { 8347 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 8348 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len); 8349 } 8350 return res; 8351} 8352#define INIT_ASYSCTL \ 8353 COMMON_INTERCEPT_FUNCTION(asysctl); \ 8354 COMMON_INTERCEPT_FUNCTION(asysctlbyname); 8355#else 8356#define INIT_ASYSCTL 8357#endif 8358 8359#if SANITIZER_INTERCEPT_SYSCTLGETMIBINFO 8360INTERCEPTOR(int, sysctlgetmibinfo, char *sname, int *name, 8361 unsigned int *namelenp, char *cname, SIZE_T *csz, void **rnode, 8362 int v) { 8363 void *ctx; 8364 COMMON_INTERCEPTOR_ENTER(ctx, sysctlgetmibinfo, sname, name, namelenp, cname, 8365 csz, rnode, v); 8366 if (sname) 8367 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); 8368 if (namelenp) 8369 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp)); 8370 if (csz) 8371 COMMON_INTERCEPTOR_READ_RANGE(ctx, csz, sizeof(*csz)); 8372 // Skip rnode, it's rarely used and not trivial to sanitize 8373 // It's also used mostly internally 8374 int res = REAL(sysctlgetmibinfo)(sname, name, namelenp, cname, csz, rnode, v); 8375 if (!res) { 8376 if (namelenp) { 8377 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp)); 8378 if (name) 8379 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name)); 8380 } 8381 if (csz) { 8382 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, csz, sizeof(*csz)); 8383 if (cname) 8384 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cname, *csz); 8385 } 8386 } 8387 return res; 8388} 8389#define INIT_SYSCTLGETMIBINFO \ 8390 COMMON_INTERCEPT_FUNCTION(sysctlgetmibinfo); 8391#else 8392#define INIT_SYSCTLGETMIBINFO 8393#endif 8394 8395#if SANITIZER_INTERCEPT_NL_LANGINFO 8396INTERCEPTOR(char *, nl_langinfo, long item) { 8397 void *ctx; 8398 COMMON_INTERCEPTOR_ENTER(ctx, nl_langinfo, item); 8399 char *ret = REAL(nl_langinfo)(item); 8400 if (ret) 8401 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1); 8402 return ret; 8403} 8404#define INIT_NL_LANGINFO COMMON_INTERCEPT_FUNCTION(nl_langinfo) 8405#else 8406#define INIT_NL_LANGINFO 8407#endif 8408 8409#if SANITIZER_INTERCEPT_MODCTL 8410INTERCEPTOR(int, modctl, int operation, void *argp) { 8411 void *ctx; 8412 int ret; 8413 COMMON_INTERCEPTOR_ENTER(ctx, modctl, operation, argp); 8414 8415 if (operation == modctl_load) { 8416 if (argp) { 8417 __sanitizer_modctl_load_t *ml = (__sanitizer_modctl_load_t *)argp; 8418 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml, sizeof(*ml)); 8419 if (ml->ml_filename) 8420 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_filename, 8421 internal_strlen(ml->ml_filename) + 1); 8422 if (ml->ml_props) 8423 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_props, ml->ml_propslen); 8424 } 8425 ret = REAL(modctl)(operation, argp); 8426 } else if (operation == modctl_unload) { 8427 if (argp) { 8428 const char *name = (const char *)argp; 8429 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); 8430 } 8431 ret = REAL(modctl)(operation, argp); 8432 } else if (operation == modctl_stat) { 8433 uptr iov_len; 8434 struct __sanitizer_iovec *iov = (struct __sanitizer_iovec *)argp; 8435 if (iov) { 8436 COMMON_INTERCEPTOR_READ_RANGE(ctx, iov, sizeof(*iov)); 8437 iov_len = iov->iov_len; 8438 } 8439 ret = REAL(modctl)(operation, argp); 8440 if (iov) 8441 COMMON_INTERCEPTOR_WRITE_RANGE( 8442 ctx, iov->iov_base, Min(iov_len, iov->iov_len)); 8443 } else if (operation == modctl_exists) { 8444 ret = REAL(modctl)(operation, argp); 8445 } else { 8446 ret = REAL(modctl)(operation, argp); 8447 } 8448 8449 return ret; 8450} 8451#define INIT_MODCTL COMMON_INTERCEPT_FUNCTION(modctl) 8452#else 8453#define INIT_MODCTL 8454#endif 8455 8456#if SANITIZER_INTERCEPT_STRTONUM 8457INTERCEPTOR(long long, strtonum, const char *nptr, long long minval, 8458 long long maxval, const char **errstr) { 8459 void *ctx; 8460 COMMON_INTERCEPTOR_ENTER(ctx, strtonum, nptr, minval, maxval, errstr); 8461 8462 // TODO(kamil): Implement strtoll as a common inteceptor 8463 char *real_endptr; 8464 long long ret = (long long)REAL(strtoimax)(nptr, &real_endptr, 10); 8465 StrtolFixAndCheck(ctx, nptr, nullptr, real_endptr, 10); 8466 8467 ret = REAL(strtonum)(nptr, minval, maxval, errstr); 8468 if (errstr) { 8469 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errstr, sizeof(const char *)); 8470 if (*errstr) 8471 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *errstr, internal_strlen(*errstr) + 1); 8472 } 8473 return ret; 8474} 8475#define INIT_STRTONUM COMMON_INTERCEPT_FUNCTION(strtonum) 8476#else 8477#define INIT_STRTONUM 8478#endif 8479 8480#if SANITIZER_INTERCEPT_FPARSELN 8481INTERCEPTOR(char *, fparseln, __sanitizer_FILE *stream, SIZE_T *len, 8482 SIZE_T *lineno, const char delim[3], int flags) { 8483 void *ctx; 8484 COMMON_INTERCEPTOR_ENTER(ctx, fparseln, stream, len, lineno, delim, flags); 8485 if (lineno) 8486 COMMON_INTERCEPTOR_READ_RANGE(ctx, lineno, sizeof(*lineno)); 8487 if (delim) 8488 COMMON_INTERCEPTOR_READ_RANGE(ctx, delim, sizeof(delim[0]) * 3); 8489 char *ret = REAL(fparseln)(stream, len, lineno, delim, flags); 8490 if (ret) { 8491 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1); 8492 if (len) 8493 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 8494 if (lineno) 8495 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineno, sizeof(*lineno)); 8496 } 8497 return ret; 8498} 8499#define INIT_FPARSELN COMMON_INTERCEPT_FUNCTION(fparseln) 8500#else 8501#define INIT_FPARSELN 8502#endif 8503 8504#if SANITIZER_INTERCEPT_STATVFS1 8505INTERCEPTOR(int, statvfs1, const char *path, void *buf, int flags) { 8506 void *ctx; 8507 COMMON_INTERCEPTOR_ENTER(ctx, statvfs1, path, buf, flags); 8508 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 8509 int res = REAL(statvfs1)(path, buf, flags); 8510 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 8511 return res; 8512} 8513INTERCEPTOR(int, fstatvfs1, int fd, void *buf, int flags) { 8514 void *ctx; 8515 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs1, fd, buf, flags); 8516 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 8517 int res = REAL(fstatvfs1)(fd, buf, flags); 8518 if (!res) { 8519 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 8520 if (fd >= 0) 8521 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 8522 } 8523 return res; 8524} 8525#define INIT_STATVFS1 \ 8526 COMMON_INTERCEPT_FUNCTION(statvfs1); \ 8527 COMMON_INTERCEPT_FUNCTION(fstatvfs1); 8528#else 8529#define INIT_STATVFS1 8530#endif 8531 8532#if SANITIZER_INTERCEPT_STRTOI 8533INTERCEPTOR(INTMAX_T, strtoi, const char *nptr, char **endptr, int base, 8534 INTMAX_T low, INTMAX_T high, int *rstatus) { 8535 void *ctx; 8536 COMMON_INTERCEPTOR_ENTER(ctx, strtoi, nptr, endptr, base, low, high, rstatus); 8537 char *real_endptr; 8538 INTMAX_T ret = REAL(strtoi)(nptr, &real_endptr, base, low, high, rstatus); 8539 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 8540 if (rstatus) 8541 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus)); 8542 return ret; 8543} 8544 8545INTERCEPTOR(UINTMAX_T, strtou, const char *nptr, char **endptr, int base, 8546 UINTMAX_T low, UINTMAX_T high, int *rstatus) { 8547 void *ctx; 8548 COMMON_INTERCEPTOR_ENTER(ctx, strtou, nptr, endptr, base, low, high, rstatus); 8549 char *real_endptr; 8550 UINTMAX_T ret = REAL(strtou)(nptr, &real_endptr, base, low, high, rstatus); 8551 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 8552 if (rstatus) 8553 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus)); 8554 return ret; 8555} 8556#define INIT_STRTOI \ 8557 COMMON_INTERCEPT_FUNCTION(strtoi); \ 8558 COMMON_INTERCEPT_FUNCTION(strtou) 8559#else 8560#define INIT_STRTOI 8561#endif 8562 8563#if SANITIZER_INTERCEPT_CAPSICUM 8564#define CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights, ...) \ 8565 { \ 8566 void *ctx; \ 8567 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_init, rights, ##__VA_ARGS__); \ 8568 if (rights) \ 8569 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 8570 __sanitizer_cap_rights_t *ret = \ 8571 REAL(cap_rights_init)(rights, ##__VA_ARGS__); \ 8572 if (ret) \ 8573 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ 8574 return ret; \ 8575 } 8576 8577#define CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights, ...) \ 8578 { \ 8579 void *ctx; \ 8580 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_set, rights, ##__VA_ARGS__); \ 8581 if (rights) \ 8582 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 8583 __sanitizer_cap_rights_t *ret = \ 8584 REAL(cap_rights_set)(rights, ##__VA_ARGS__); \ 8585 if (ret) \ 8586 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ 8587 return ret; \ 8588 } 8589 8590#define CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights, ...) \ 8591 { \ 8592 void *ctx; \ 8593 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_clear, rights, ##__VA_ARGS__); \ 8594 if (rights) \ 8595 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 8596 __sanitizer_cap_rights_t *ret = \ 8597 REAL(cap_rights_clear)(rights, ##__VA_ARGS__); \ 8598 if (ret) \ 8599 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ 8600 return ret; \ 8601 } 8602 8603#define CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights, ...) \ 8604 { \ 8605 void *ctx; \ 8606 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_set, rights, ##__VA_ARGS__); \ 8607 if (rights) \ 8608 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 8609 return REAL(cap_rights_is_set)(rights, ##__VA_ARGS__); \ 8610 } 8611 8612INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_init, 8613 __sanitizer_cap_rights_t *rights) { 8614 CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights); 8615} 8616 8617INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_set, 8618 __sanitizer_cap_rights_t *rights) { 8619 CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights); 8620} 8621 8622INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_clear, 8623 __sanitizer_cap_rights_t *rights) { 8624 CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights); 8625} 8626 8627INTERCEPTOR(bool, cap_rights_is_set, 8628 __sanitizer_cap_rights_t *rights) { 8629 CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights); 8630} 8631 8632INTERCEPTOR(int, cap_rights_limit, int fd, 8633 const __sanitizer_cap_rights_t *rights) { 8634 void *ctx; 8635 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_limit, fd, rights); 8636 if (rights) 8637 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); 8638 8639 return REAL(cap_rights_limit)(fd, rights); 8640} 8641 8642INTERCEPTOR(int, cap_rights_get, int fd, __sanitizer_cap_rights_t *rights) { 8643 void *ctx; 8644 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_get, fd, rights); 8645 int ret = REAL(cap_rights_get)(fd, rights); 8646 if (!ret && rights) 8647 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rights, sizeof(*rights)); 8648 8649 return ret; 8650} 8651 8652INTERCEPTOR(bool, cap_rights_is_valid, const __sanitizer_cap_rights_t *rights) { 8653 void *ctx; 8654 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_valid, rights); 8655 if (rights) 8656 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); 8657 8658 return REAL(cap_rights_is_valid(rights)); 8659} 8660 8661INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_merge, 8662 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) { 8663 void *ctx; 8664 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_merge, dst, src); 8665 if (src) 8666 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 8667 8668 __sanitizer_cap_rights *ret = REAL(cap_rights_merge)(dst, src); 8669 if (dst) 8670 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); 8671 8672 return ret; 8673} 8674 8675INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_remove, 8676 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) { 8677 void *ctx; 8678 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_remove, dst, src); 8679 if (src) 8680 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 8681 8682 __sanitizer_cap_rights *ret = REAL(cap_rights_remove)(dst, src); 8683 if (dst) 8684 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); 8685 8686 return ret; 8687} 8688 8689INTERCEPTOR(bool, cap_rights_contains, const __sanitizer_cap_rights *big, 8690 const __sanitizer_cap_rights *little) { 8691 void *ctx; 8692 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_contains, big, little); 8693 if (little) 8694 COMMON_INTERCEPTOR_READ_RANGE(ctx, little, sizeof(*little)); 8695 if (big) 8696 COMMON_INTERCEPTOR_READ_RANGE(ctx, big, sizeof(*big)); 8697 8698 return REAL(cap_rights_contains)(big, little); 8699} 8700 8701INTERCEPTOR(int, cap_ioctls_limit, int fd, const uptr *cmds, SIZE_T ncmds) { 8702 void *ctx; 8703 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_limit, fd, cmds, ncmds); 8704 if (cmds) 8705 COMMON_INTERCEPTOR_READ_RANGE(ctx, cmds, sizeof(*cmds) * ncmds); 8706 8707 return REAL(cap_ioctls_limit)(fd, cmds, ncmds); 8708} 8709 8710INTERCEPTOR(int, cap_ioctls_get, int fd, uptr *cmds, SIZE_T maxcmds) { 8711 void *ctx; 8712 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_get, fd, cmds, maxcmds); 8713 int ret = REAL(cap_ioctls_get)(fd, cmds, maxcmds); 8714 if (!ret && cmds) 8715 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cmds, sizeof(*cmds) * maxcmds); 8716 8717 return ret; 8718} 8719#define INIT_CAPSICUM \ 8720 COMMON_INTERCEPT_FUNCTION(cap_rights_init); \ 8721 COMMON_INTERCEPT_FUNCTION(cap_rights_set); \ 8722 COMMON_INTERCEPT_FUNCTION(cap_rights_clear); \ 8723 COMMON_INTERCEPT_FUNCTION(cap_rights_is_set); \ 8724 COMMON_INTERCEPT_FUNCTION(cap_rights_get); \ 8725 COMMON_INTERCEPT_FUNCTION(cap_rights_limit); \ 8726 COMMON_INTERCEPT_FUNCTION(cap_rights_contains); \ 8727 COMMON_INTERCEPT_FUNCTION(cap_rights_remove); \ 8728 COMMON_INTERCEPT_FUNCTION(cap_rights_merge); \ 8729 COMMON_INTERCEPT_FUNCTION(cap_rights_is_valid); \ 8730 COMMON_INTERCEPT_FUNCTION(cap_ioctls_get); \ 8731 COMMON_INTERCEPT_FUNCTION(cap_ioctls_limit) 8732#else 8733#define INIT_CAPSICUM 8734#endif 8735 8736#if SANITIZER_INTERCEPT_SHA1 8737INTERCEPTOR(void, SHA1Init, void *context) { 8738 void *ctx; 8739 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Init, context); 8740 REAL(SHA1Init)(context); 8741 if (context) 8742 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz); 8743} 8744INTERCEPTOR(void, SHA1Update, void *context, const u8 *data, unsigned len) { 8745 void *ctx; 8746 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Update, context, data, len); 8747 if (data && len > 0) 8748 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8749 if (context) 8750 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); 8751 REAL(SHA1Update)(context, data, len); 8752 if (context) 8753 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz); 8754} 8755INTERCEPTOR(void, SHA1Final, u8 digest[20], void *context) { 8756 void *ctx; 8757 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Final, digest, context); 8758 if (context) 8759 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); 8760 REAL(SHA1Final)(digest, context); 8761 if (digest) 8762 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20); 8763} 8764INTERCEPTOR(void, SHA1Transform, u32 state[5], u8 buffer[64]) { 8765 void *ctx; 8766 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Transform, state, buffer); 8767 if (state) 8768 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5); 8769 if (buffer) 8770 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u8) * 64); 8771 REAL(SHA1Transform)(state, buffer); 8772 if (state) 8773 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5); 8774} 8775INTERCEPTOR(char *, SHA1End, void *context, char *buf) { 8776 void *ctx; 8777 COMMON_INTERCEPTOR_ENTER(ctx, SHA1End, context, buf); 8778 if (context) 8779 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); 8780 char *ret = REAL(SHA1End)(context, buf); 8781 if (ret) 8782 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8783 return ret; 8784} 8785INTERCEPTOR(char *, SHA1File, char *filename, char *buf) { 8786 void *ctx; 8787 COMMON_INTERCEPTOR_ENTER(ctx, SHA1File, filename, buf); 8788 if (filename) 8789 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 8790 char *ret = REAL(SHA1File)(filename, buf); 8791 if (ret) 8792 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8793 return ret; 8794} 8795INTERCEPTOR(char *, SHA1FileChunk, char *filename, char *buf, OFF_T offset, 8796 OFF_T length) { 8797 void *ctx; 8798 COMMON_INTERCEPTOR_ENTER(ctx, SHA1FileChunk, filename, buf, offset, length); 8799 if (filename) 8800 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 8801 char *ret = REAL(SHA1FileChunk)(filename, buf, offset, length); 8802 if (ret) 8803 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8804 return ret; 8805} 8806INTERCEPTOR(char *, SHA1Data, u8 *data, SIZE_T len, char *buf) { 8807 void *ctx; 8808 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Data, data, len, buf); 8809 if (data) 8810 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8811 char *ret = REAL(SHA1Data)(data, len, buf); 8812 if (ret) 8813 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8814 return ret; 8815} 8816#define INIT_SHA1 \ 8817 COMMON_INTERCEPT_FUNCTION(SHA1Init); \ 8818 COMMON_INTERCEPT_FUNCTION(SHA1Update); \ 8819 COMMON_INTERCEPT_FUNCTION(SHA1Final); \ 8820 COMMON_INTERCEPT_FUNCTION(SHA1Transform); \ 8821 COMMON_INTERCEPT_FUNCTION(SHA1End); \ 8822 COMMON_INTERCEPT_FUNCTION(SHA1File); \ 8823 COMMON_INTERCEPT_FUNCTION(SHA1FileChunk); \ 8824 COMMON_INTERCEPT_FUNCTION(SHA1Data) 8825#else 8826#define INIT_SHA1 8827#endif 8828 8829#if SANITIZER_INTERCEPT_MD4 8830INTERCEPTOR(void, MD4Init, void *context) { 8831 void *ctx; 8832 COMMON_INTERCEPTOR_ENTER(ctx, MD4Init, context); 8833 REAL(MD4Init)(context); 8834 if (context) 8835 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz); 8836} 8837 8838INTERCEPTOR(void, MD4Update, void *context, const unsigned char *data, 8839 unsigned int len) { 8840 void *ctx; 8841 COMMON_INTERCEPTOR_ENTER(ctx, MD4Update, context, data, len); 8842 if (data && len > 0) 8843 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8844 if (context) 8845 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); 8846 REAL(MD4Update)(context, data, len); 8847 if (context) 8848 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz); 8849} 8850 8851INTERCEPTOR(void, MD4Final, unsigned char digest[16], void *context) { 8852 void *ctx; 8853 COMMON_INTERCEPTOR_ENTER(ctx, MD4Final, digest, context); 8854 if (context) 8855 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); 8856 REAL(MD4Final)(digest, context); 8857 if (digest) 8858 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); 8859} 8860 8861INTERCEPTOR(char *, MD4End, void *context, char *buf) { 8862 void *ctx; 8863 COMMON_INTERCEPTOR_ENTER(ctx, MD4End, context, buf); 8864 if (context) 8865 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); 8866 char *ret = REAL(MD4End)(context, buf); 8867 if (ret) 8868 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); 8869 return ret; 8870} 8871 8872INTERCEPTOR(char *, MD4File, const char *filename, char *buf) { 8873 void *ctx; 8874 COMMON_INTERCEPTOR_ENTER(ctx, MD4File, filename, buf); 8875 if (filename) 8876 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 8877 char *ret = REAL(MD4File)(filename, buf); 8878 if (ret) 8879 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); 8880 return ret; 8881} 8882 8883INTERCEPTOR(char *, MD4Data, const unsigned char *data, unsigned int len, 8884 char *buf) { 8885 void *ctx; 8886 COMMON_INTERCEPTOR_ENTER(ctx, MD4Data, data, len, buf); 8887 if (data && len > 0) 8888 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8889 char *ret = REAL(MD4Data)(data, len, buf); 8890 if (ret) 8891 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); 8892 return ret; 8893} 8894 8895#define INIT_MD4 \ 8896 COMMON_INTERCEPT_FUNCTION(MD4Init); \ 8897 COMMON_INTERCEPT_FUNCTION(MD4Update); \ 8898 COMMON_INTERCEPT_FUNCTION(MD4Final); \ 8899 COMMON_INTERCEPT_FUNCTION(MD4End); \ 8900 COMMON_INTERCEPT_FUNCTION(MD4File); \ 8901 COMMON_INTERCEPT_FUNCTION(MD4Data) 8902#else 8903#define INIT_MD4 8904#endif 8905 8906#if SANITIZER_INTERCEPT_RMD160 8907INTERCEPTOR(void, RMD160Init, void *context) { 8908 void *ctx; 8909 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Init, context); 8910 REAL(RMD160Init)(context); 8911 if (context) 8912 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz); 8913} 8914INTERCEPTOR(void, RMD160Update, void *context, const u8 *data, unsigned len) { 8915 void *ctx; 8916 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Update, context, data, len); 8917 if (data && len > 0) 8918 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8919 if (context) 8920 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); 8921 REAL(RMD160Update)(context, data, len); 8922 if (context) 8923 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz); 8924} 8925INTERCEPTOR(void, RMD160Final, u8 digest[20], void *context) { 8926 void *ctx; 8927 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Final, digest, context); 8928 if (context) 8929 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); 8930 REAL(RMD160Final)(digest, context); 8931 if (digest) 8932 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20); 8933} 8934INTERCEPTOR(void, RMD160Transform, u32 state[5], u16 buffer[16]) { 8935 void *ctx; 8936 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Transform, state, buffer); 8937 if (state) 8938 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5); 8939 if (buffer) 8940 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u32) * 16); 8941 REAL(RMD160Transform)(state, buffer); 8942 if (state) 8943 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5); 8944} 8945INTERCEPTOR(char *, RMD160End, void *context, char *buf) { 8946 void *ctx; 8947 COMMON_INTERCEPTOR_ENTER(ctx, RMD160End, context, buf); 8948 if (context) 8949 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); 8950 char *ret = REAL(RMD160End)(context, buf); 8951 if (ret) 8952 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8953 return ret; 8954} 8955INTERCEPTOR(char *, RMD160File, char *filename, char *buf) { 8956 void *ctx; 8957 COMMON_INTERCEPTOR_ENTER(ctx, RMD160File, filename, buf); 8958 if (filename) 8959 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 8960 char *ret = REAL(RMD160File)(filename, buf); 8961 if (ret) 8962 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8963 return ret; 8964} 8965INTERCEPTOR(char *, RMD160FileChunk, char *filename, char *buf, OFF_T offset, 8966 OFF_T length) { 8967 void *ctx; 8968 COMMON_INTERCEPTOR_ENTER(ctx, RMD160FileChunk, filename, buf, offset, length); 8969 if (filename) 8970 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 8971 char *ret = REAL(RMD160FileChunk)(filename, buf, offset, length); 8972 if (ret) 8973 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8974 return ret; 8975} 8976INTERCEPTOR(char *, RMD160Data, u8 *data, SIZE_T len, char *buf) { 8977 void *ctx; 8978 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Data, data, len, buf); 8979 if (data && len > 0) 8980 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8981 char *ret = REAL(RMD160Data)(data, len, buf); 8982 if (ret) 8983 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8984 return ret; 8985} 8986#define INIT_RMD160 \ 8987 COMMON_INTERCEPT_FUNCTION(RMD160Init); \ 8988 COMMON_INTERCEPT_FUNCTION(RMD160Update); \ 8989 COMMON_INTERCEPT_FUNCTION(RMD160Final); \ 8990 COMMON_INTERCEPT_FUNCTION(RMD160Transform); \ 8991 COMMON_INTERCEPT_FUNCTION(RMD160End); \ 8992 COMMON_INTERCEPT_FUNCTION(RMD160File); \ 8993 COMMON_INTERCEPT_FUNCTION(RMD160FileChunk); \ 8994 COMMON_INTERCEPT_FUNCTION(RMD160Data) 8995#else 8996#define INIT_RMD160 8997#endif 8998 8999#if SANITIZER_INTERCEPT_MD5 9000INTERCEPTOR(void, MD5Init, void *context) { 9001 void *ctx; 9002 COMMON_INTERCEPTOR_ENTER(ctx, MD5Init, context); 9003 REAL(MD5Init)(context); 9004 if (context) 9005 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD5_CTX_sz); 9006} 9007 9008INTERCEPTOR(void, MD5Update, void *context, const unsigned char *data, 9009 unsigned int len) { 9010 void *ctx; 9011 COMMON_INTERCEPTOR_ENTER(ctx, MD5Update, context, data, len); 9012 if (data && len > 0) 9013 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 9014 if (context) 9015 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz); 9016 REAL(MD5Update)(context, data, len); 9017 if (context) 9018 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD5_CTX_sz); 9019} 9020 9021INTERCEPTOR(void, MD5Final, unsigned char digest[16], void *context) { 9022 void *ctx; 9023 COMMON_INTERCEPTOR_ENTER(ctx, MD5Final, digest, context); 9024 if (context) 9025 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz); 9026 REAL(MD5Final)(digest, context); 9027 if (digest) 9028 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); 9029} 9030 9031INTERCEPTOR(char *, MD5End, void *context, char *buf) { 9032 void *ctx; 9033 COMMON_INTERCEPTOR_ENTER(ctx, MD5End, context, buf); 9034 if (context) 9035 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz); 9036 char *ret = REAL(MD5End)(context, buf); 9037 if (ret) 9038 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length); 9039 return ret; 9040} 9041 9042INTERCEPTOR(char *, MD5File, const char *filename, char *buf) { 9043 void *ctx; 9044 COMMON_INTERCEPTOR_ENTER(ctx, MD5File, filename, buf); 9045 if (filename) 9046 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 9047 char *ret = REAL(MD5File)(filename, buf); 9048 if (ret) 9049 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length); 9050 return ret; 9051} 9052 9053INTERCEPTOR(char *, MD5Data, const unsigned char *data, unsigned int len, 9054 char *buf) { 9055 void *ctx; 9056 COMMON_INTERCEPTOR_ENTER(ctx, MD5Data, data, len, buf); 9057 if (data && len > 0) 9058 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 9059 char *ret = REAL(MD5Data)(data, len, buf); 9060 if (ret) 9061 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length); 9062 return ret; 9063} 9064 9065#define INIT_MD5 \ 9066 COMMON_INTERCEPT_FUNCTION(MD5Init); \ 9067 COMMON_INTERCEPT_FUNCTION(MD5Update); \ 9068 COMMON_INTERCEPT_FUNCTION(MD5Final); \ 9069 COMMON_INTERCEPT_FUNCTION(MD5End); \ 9070 COMMON_INTERCEPT_FUNCTION(MD5File); \ 9071 COMMON_INTERCEPT_FUNCTION(MD5Data) 9072#else 9073#define INIT_MD5 9074#endif 9075 9076#if SANITIZER_INTERCEPT_FSEEK 9077INTERCEPTOR(int, fseek, __sanitizer_FILE *stream, long int offset, int whence) { 9078 void *ctx; 9079 COMMON_INTERCEPTOR_ENTER(ctx, fseek, stream, offset, whence); 9080 return REAL(fseek)(stream, offset, whence); 9081} 9082INTERCEPTOR(int, fseeko, __sanitizer_FILE *stream, OFF_T offset, int whence) { 9083 void *ctx; 9084 COMMON_INTERCEPTOR_ENTER(ctx, fseeko, stream, offset, whence); 9085 return REAL(fseeko)(stream, offset, whence); 9086} 9087INTERCEPTOR(long int, ftell, __sanitizer_FILE *stream) { 9088 void *ctx; 9089 COMMON_INTERCEPTOR_ENTER(ctx, ftell, stream); 9090 return REAL(ftell)(stream); 9091} 9092INTERCEPTOR(OFF_T, ftello, __sanitizer_FILE *stream) { 9093 void *ctx; 9094 COMMON_INTERCEPTOR_ENTER(ctx, ftello, stream); 9095 return REAL(ftello)(stream); 9096} 9097INTERCEPTOR(void, rewind, __sanitizer_FILE *stream) { 9098 void *ctx; 9099 COMMON_INTERCEPTOR_ENTER(ctx, rewind, stream); 9100 return REAL(rewind)(stream); 9101} 9102INTERCEPTOR(int, fgetpos, __sanitizer_FILE *stream, void *pos) { 9103 void *ctx; 9104 COMMON_INTERCEPTOR_ENTER(ctx, fgetpos, stream, pos); 9105 int ret = REAL(fgetpos)(stream, pos); 9106 if (pos && !ret) 9107 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pos, fpos_t_sz); 9108 return ret; 9109} 9110INTERCEPTOR(int, fsetpos, __sanitizer_FILE *stream, const void *pos) { 9111 void *ctx; 9112 COMMON_INTERCEPTOR_ENTER(ctx, fsetpos, stream, pos); 9113 if (pos) 9114 COMMON_INTERCEPTOR_READ_RANGE(ctx, pos, fpos_t_sz); 9115 return REAL(fsetpos)(stream, pos); 9116} 9117#define INIT_FSEEK \ 9118 COMMON_INTERCEPT_FUNCTION(fseek); \ 9119 COMMON_INTERCEPT_FUNCTION(fseeko); \ 9120 COMMON_INTERCEPT_FUNCTION(ftell); \ 9121 COMMON_INTERCEPT_FUNCTION(ftello); \ 9122 COMMON_INTERCEPT_FUNCTION(rewind); \ 9123 COMMON_INTERCEPT_FUNCTION(fgetpos); \ 9124 COMMON_INTERCEPT_FUNCTION(fsetpos) 9125#else 9126#define INIT_FSEEK 9127#endif 9128 9129#if SANITIZER_INTERCEPT_MD2 9130INTERCEPTOR(void, MD2Init, void *context) { 9131 void *ctx; 9132 COMMON_INTERCEPTOR_ENTER(ctx, MD2Init, context); 9133 REAL(MD2Init)(context); 9134 if (context) 9135 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz); 9136} 9137 9138INTERCEPTOR(void, MD2Update, void *context, const unsigned char *data, 9139 unsigned int len) { 9140 void *ctx; 9141 COMMON_INTERCEPTOR_ENTER(ctx, MD2Update, context, data, len); 9142 if (data && len > 0) 9143 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 9144 if (context) 9145 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); 9146 REAL(MD2Update)(context, data, len); 9147 if (context) 9148 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz); 9149} 9150 9151INTERCEPTOR(void, MD2Final, unsigned char digest[16], void *context) { 9152 void *ctx; 9153 COMMON_INTERCEPTOR_ENTER(ctx, MD2Final, digest, context); 9154 if (context) 9155 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); 9156 REAL(MD2Final)(digest, context); 9157 if (digest) 9158 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); 9159} 9160 9161INTERCEPTOR(char *, MD2End, void *context, char *buf) { 9162 void *ctx; 9163 COMMON_INTERCEPTOR_ENTER(ctx, MD2End, context, buf); 9164 if (context) 9165 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); 9166 char *ret = REAL(MD2End)(context, buf); 9167 if (ret) 9168 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); 9169 return ret; 9170} 9171 9172INTERCEPTOR(char *, MD2File, const char *filename, char *buf) { 9173 void *ctx; 9174 COMMON_INTERCEPTOR_ENTER(ctx, MD2File, filename, buf); 9175 if (filename) 9176 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); 9177 char *ret = REAL(MD2File)(filename, buf); 9178 if (ret) 9179 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); 9180 return ret; 9181} 9182 9183INTERCEPTOR(char *, MD2Data, const unsigned char *data, unsigned int len, 9184 char *buf) { 9185 void *ctx; 9186 COMMON_INTERCEPTOR_ENTER(ctx, MD2Data, data, len, buf); 9187 if (data && len > 0) 9188 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 9189 char *ret = REAL(MD2Data)(data, len, buf); 9190 if (ret) 9191 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); 9192 return ret; 9193} 9194 9195#define INIT_MD2 \ 9196 COMMON_INTERCEPT_FUNCTION(MD2Init); \ 9197 COMMON_INTERCEPT_FUNCTION(MD2Update); \ 9198 COMMON_INTERCEPT_FUNCTION(MD2Final); \ 9199 COMMON_INTERCEPT_FUNCTION(MD2End); \ 9200 COMMON_INTERCEPT_FUNCTION(MD2File); \ 9201 COMMON_INTERCEPT_FUNCTION(MD2Data) 9202#else 9203#define INIT_MD2 9204#endif 9205 9206#if SANITIZER_INTERCEPT_SHA2 9207#define SHA2_INTERCEPTORS(LEN, SHA2_STATE_T) \ 9208 INTERCEPTOR(void, SHA##LEN##_Init, void *context) { \ 9209 void *ctx; \ 9210 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Init, context); \ 9211 REAL(SHA##LEN##_Init)(context); \ 9212 if (context) \ 9213 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 9214 } \ 9215 INTERCEPTOR(void, SHA##LEN##_Update, void *context, \ 9216 const u8 *data, SIZE_T len) { \ 9217 void *ctx; \ 9218 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Update, context, data, len); \ 9219 if (data && len > 0) \ 9220 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); \ 9221 if (context) \ 9222 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 9223 REAL(SHA##LEN##_Update)(context, data, len); \ 9224 if (context) \ 9225 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 9226 } \ 9227 INTERCEPTOR(void, SHA##LEN##_Final, u8 digest[LEN/8], \ 9228 void *context) { \ 9229 void *ctx; \ 9230 CHECK_EQ(SHA##LEN##_digest_length, LEN/8); \ 9231 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Final, digest, context); \ 9232 if (context) \ 9233 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 9234 REAL(SHA##LEN##_Final)(digest, context); \ 9235 if (digest) \ 9236 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, \ 9237 sizeof(digest[0]) * \ 9238 SHA##LEN##_digest_length); \ 9239 } \ 9240 INTERCEPTOR(char *, SHA##LEN##_End, void *context, char *buf) { \ 9241 void *ctx; \ 9242 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_End, context, buf); \ 9243 if (context) \ 9244 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 9245 char *ret = REAL(SHA##LEN##_End)(context, buf); \ 9246 if (ret) \ 9247 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 9248 return ret; \ 9249 } \ 9250 INTERCEPTOR(char *, SHA##LEN##_File, const char *filename, char *buf) { \ 9251 void *ctx; \ 9252 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_File, filename, buf); \ 9253 if (filename) \ 9254 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);\ 9255 char *ret = REAL(SHA##LEN##_File)(filename, buf); \ 9256 if (ret) \ 9257 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 9258 return ret; \ 9259 } \ 9260 INTERCEPTOR(char *, SHA##LEN##_FileChunk, const char *filename, char *buf, \ 9261 OFF_T offset, OFF_T length) { \ 9262 void *ctx; \ 9263 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_FileChunk, filename, buf, offset, \ 9264 length); \ 9265 if (filename) \ 9266 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1);\ 9267 char *ret = REAL(SHA##LEN##_FileChunk)(filename, buf, offset, length); \ 9268 if (ret) \ 9269 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 9270 return ret; \ 9271 } \ 9272 INTERCEPTOR(char *, SHA##LEN##_Data, u8 *data, SIZE_T len, char *buf) { \ 9273 void *ctx; \ 9274 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Data, data, len, buf); \ 9275 if (data && len > 0) \ 9276 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); \ 9277 char *ret = REAL(SHA##LEN##_Data)(data, len, buf); \ 9278 if (ret) \ 9279 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 9280 return ret; \ 9281 } 9282 9283SHA2_INTERCEPTORS(224, u32) 9284SHA2_INTERCEPTORS(256, u32) 9285SHA2_INTERCEPTORS(384, u64) 9286SHA2_INTERCEPTORS(512, u64) 9287 9288#define INIT_SHA2_INTECEPTORS(LEN) \ 9289 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Init); \ 9290 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Update); \ 9291 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Final); \ 9292 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_End); \ 9293 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_File); \ 9294 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_FileChunk); \ 9295 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Data) 9296 9297#define INIT_SHA2 \ 9298 INIT_SHA2_INTECEPTORS(224); \ 9299 INIT_SHA2_INTECEPTORS(256); \ 9300 INIT_SHA2_INTECEPTORS(384); \ 9301 INIT_SHA2_INTECEPTORS(512) 9302#undef SHA2_INTERCEPTORS 9303#else 9304#define INIT_SHA2 9305#endif 9306 9307#if SANITIZER_INTERCEPT_VIS 9308INTERCEPTOR(char *, vis, char *dst, int c, int flag, int nextc) { 9309 void *ctx; 9310 COMMON_INTERCEPTOR_ENTER(ctx, vis, dst, c, flag, nextc); 9311 char *end = REAL(vis)(dst, c, flag, nextc); 9312 // dst is NULL terminated and end points to the NULL char 9313 if (dst && end) 9314 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); 9315 return end; 9316} 9317INTERCEPTOR(char *, nvis, char *dst, SIZE_T dlen, int c, int flag, int nextc) { 9318 void *ctx; 9319 COMMON_INTERCEPTOR_ENTER(ctx, nvis, dst, dlen, c, flag, nextc); 9320 char *end = REAL(nvis)(dst, dlen, c, flag, nextc); 9321 // nvis cannot make sure the dst is NULL terminated 9322 if (dst && end) 9323 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); 9324 return end; 9325} 9326INTERCEPTOR(int, strvis, char *dst, const char *src, int flag) { 9327 void *ctx; 9328 COMMON_INTERCEPTOR_ENTER(ctx, strvis, dst, src, flag); 9329 if (src) 9330 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9331 int len = REAL(strvis)(dst, src, flag); 9332 if (dst) 9333 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 9334 return len; 9335} 9336INTERCEPTOR(int, stravis, char **dst, const char *src, int flag) { 9337 void *ctx; 9338 COMMON_INTERCEPTOR_ENTER(ctx, stravis, dst, src, flag); 9339 if (src) 9340 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9341 int len = REAL(stravis)(dst, src, flag); 9342 if (dst) { 9343 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(char *)); 9344 if (*dst) 9345 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *dst, len + 1); 9346 } 9347 return len; 9348} 9349INTERCEPTOR(int, strnvis, char *dst, SIZE_T dlen, const char *src, int flag) { 9350 void *ctx; 9351 COMMON_INTERCEPTOR_ENTER(ctx, strnvis, dst, dlen, src, flag); 9352 if (src) 9353 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9354 int len = REAL(strnvis)(dst, dlen, src, flag); 9355 // The interface will be valid even if there is no space for NULL char 9356 if (dst && len > 0) 9357 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 9358 return len; 9359} 9360INTERCEPTOR(int, strvisx, char *dst, const char *src, SIZE_T len, int flag) { 9361 void *ctx; 9362 COMMON_INTERCEPTOR_ENTER(ctx, strvisx, dst, src, len, flag); 9363 if (src) 9364 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 9365 int ret = REAL(strvisx)(dst, src, len, flag); 9366 if (dst) 9367 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9368 return ret; 9369} 9370INTERCEPTOR(int, strnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, 9371 int flag) { 9372 void *ctx; 9373 COMMON_INTERCEPTOR_ENTER(ctx, strnvisx, dst, dlen, src, len, flag); 9374 if (src) 9375 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 9376 int ret = REAL(strnvisx)(dst, dlen, src, len, flag); 9377 if (dst && ret >= 0) 9378 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9379 return ret; 9380} 9381INTERCEPTOR(int, strenvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, 9382 int flag, int *cerr_ptr) { 9383 void *ctx; 9384 COMMON_INTERCEPTOR_ENTER(ctx, strenvisx, dst, dlen, src, len, flag, cerr_ptr); 9385 if (src) 9386 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 9387 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold 9388 // according to the implementation 9389 if (cerr_ptr) 9390 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int)); 9391 int ret = REAL(strenvisx)(dst, dlen, src, len, flag, cerr_ptr); 9392 if (dst && ret >= 0) 9393 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9394 if (cerr_ptr) 9395 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int)); 9396 return ret; 9397} 9398INTERCEPTOR(char *, svis, char *dst, int c, int flag, int nextc, 9399 const char *extra) { 9400 void *ctx; 9401 COMMON_INTERCEPTOR_ENTER(ctx, svis, dst, c, flag, nextc, extra); 9402 if (extra) 9403 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9404 char *end = REAL(svis)(dst, c, flag, nextc, extra); 9405 if (dst && end) 9406 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); 9407 return end; 9408} 9409INTERCEPTOR(char *, snvis, char *dst, SIZE_T dlen, int c, int flag, int nextc, 9410 const char *extra) { 9411 void *ctx; 9412 COMMON_INTERCEPTOR_ENTER(ctx, snvis, dst, dlen, c, flag, nextc, extra); 9413 if (extra) 9414 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9415 char *end = REAL(snvis)(dst, dlen, c, flag, nextc, extra); 9416 if (dst && end) 9417 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, 9418 Min((SIZE_T)(end - dst + 1), dlen)); 9419 return end; 9420} 9421INTERCEPTOR(int, strsvis, char *dst, const char *src, int flag, 9422 const char *extra) { 9423 void *ctx; 9424 COMMON_INTERCEPTOR_ENTER(ctx, strsvis, dst, src, flag, extra); 9425 if (src) 9426 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9427 if (extra) 9428 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9429 int len = REAL(strsvis)(dst, src, flag, extra); 9430 if (dst) 9431 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 9432 return len; 9433} 9434INTERCEPTOR(int, strsnvis, char *dst, SIZE_T dlen, const char *src, int flag, 9435 const char *extra) { 9436 void *ctx; 9437 COMMON_INTERCEPTOR_ENTER(ctx, strsnvis, dst, dlen, src, flag, extra); 9438 if (src) 9439 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9440 if (extra) 9441 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9442 int len = REAL(strsnvis)(dst, dlen, src, flag, extra); 9443 // The interface will be valid even if there is no space for NULL char 9444 if (dst && len >= 0) 9445 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 9446 return len; 9447} 9448INTERCEPTOR(int, strsvisx, char *dst, const char *src, SIZE_T len, int flag, 9449 const char *extra) { 9450 void *ctx; 9451 COMMON_INTERCEPTOR_ENTER(ctx, strsvisx, dst, src, len, flag, extra); 9452 if (src) 9453 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 9454 if (extra) 9455 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9456 int ret = REAL(strsvisx)(dst, src, len, flag, extra); 9457 if (dst) 9458 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9459 return ret; 9460} 9461INTERCEPTOR(int, strsnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, 9462 int flag, const char *extra) { 9463 void *ctx; 9464 COMMON_INTERCEPTOR_ENTER(ctx, strsnvisx, dst, dlen, src, len, flag, extra); 9465 if (src) 9466 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 9467 if (extra) 9468 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9469 int ret = REAL(strsnvisx)(dst, dlen, src, len, flag, extra); 9470 if (dst && ret >= 0) 9471 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9472 return ret; 9473} 9474INTERCEPTOR(int, strsenvisx, char *dst, SIZE_T dlen, const char *src, 9475 SIZE_T len, int flag, const char *extra, int *cerr_ptr) { 9476 void *ctx; 9477 COMMON_INTERCEPTOR_ENTER(ctx, strsenvisx, dst, dlen, src, len, flag, extra, 9478 cerr_ptr); 9479 if (src) 9480 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 9481 if (extra) 9482 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); 9483 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold 9484 // according to the implementation 9485 if (cerr_ptr) 9486 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int)); 9487 int ret = REAL(strsenvisx)(dst, dlen, src, len, flag, extra, cerr_ptr); 9488 if (dst && ret >= 0) 9489 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9490 if (cerr_ptr) 9491 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int)); 9492 return ret; 9493} 9494INTERCEPTOR(int, unvis, char *cp, int c, int *astate, int flag) { 9495 void *ctx; 9496 COMMON_INTERCEPTOR_ENTER(ctx, unvis, cp, c, astate, flag); 9497 if (astate) 9498 COMMON_INTERCEPTOR_READ_RANGE(ctx, astate, sizeof(*astate)); 9499 int ret = REAL(unvis)(cp, c, astate, flag); 9500 if (ret == unvis_valid || ret == unvis_validpush) { 9501 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cp, sizeof(*cp)); 9502 } 9503 return ret; 9504} 9505INTERCEPTOR(int, strunvis, char *dst, const char *src) { 9506 void *ctx; 9507 COMMON_INTERCEPTOR_ENTER(ctx, strunvis, dst, src); 9508 if (src) 9509 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9510 int ret = REAL(strunvis)(dst, src); 9511 if (ret != -1) 9512 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9513 return ret; 9514} 9515INTERCEPTOR(int, strnunvis, char *dst, SIZE_T dlen, const char *src) { 9516 void *ctx; 9517 COMMON_INTERCEPTOR_ENTER(ctx, strnunvis, dst, dlen, src); 9518 if (src) 9519 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9520 int ret = REAL(strnunvis)(dst, dlen, src); 9521 if (ret != -1) 9522 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9523 return ret; 9524} 9525INTERCEPTOR(int, strunvisx, char *dst, const char *src, int flag) { 9526 void *ctx; 9527 COMMON_INTERCEPTOR_ENTER(ctx, strunvisx, dst, src, flag); 9528 if (src) 9529 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9530 int ret = REAL(strunvisx)(dst, src, flag); 9531 if (ret != -1) 9532 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9533 return ret; 9534} 9535INTERCEPTOR(int, strnunvisx, char *dst, SIZE_T dlen, const char *src, 9536 int flag) { 9537 void *ctx; 9538 COMMON_INTERCEPTOR_ENTER(ctx, strnunvisx, dst, dlen, src, flag); 9539 if (src) 9540 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); 9541 int ret = REAL(strnunvisx)(dst, dlen, src, flag); 9542 if (ret != -1) 9543 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 9544 return ret; 9545} 9546#define INIT_VIS \ 9547 COMMON_INTERCEPT_FUNCTION(vis); \ 9548 COMMON_INTERCEPT_FUNCTION(nvis); \ 9549 COMMON_INTERCEPT_FUNCTION(strvis); \ 9550 COMMON_INTERCEPT_FUNCTION(stravis); \ 9551 COMMON_INTERCEPT_FUNCTION(strnvis); \ 9552 COMMON_INTERCEPT_FUNCTION(strvisx); \ 9553 COMMON_INTERCEPT_FUNCTION(strnvisx); \ 9554 COMMON_INTERCEPT_FUNCTION(strenvisx); \ 9555 COMMON_INTERCEPT_FUNCTION(svis); \ 9556 COMMON_INTERCEPT_FUNCTION(snvis); \ 9557 COMMON_INTERCEPT_FUNCTION(strsvis); \ 9558 COMMON_INTERCEPT_FUNCTION(strsnvis); \ 9559 COMMON_INTERCEPT_FUNCTION(strsvisx); \ 9560 COMMON_INTERCEPT_FUNCTION(strsnvisx); \ 9561 COMMON_INTERCEPT_FUNCTION(strsenvisx); \ 9562 COMMON_INTERCEPT_FUNCTION(unvis); \ 9563 COMMON_INTERCEPT_FUNCTION(strunvis); \ 9564 COMMON_INTERCEPT_FUNCTION(strnunvis); \ 9565 COMMON_INTERCEPT_FUNCTION(strunvisx); \ 9566 COMMON_INTERCEPT_FUNCTION(strnunvisx) 9567#else 9568#define INIT_VIS 9569#endif 9570 9571#if SANITIZER_INTERCEPT_CDB 9572INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open, const char *path, int flags) { 9573 void *ctx; 9574 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open, path, flags); 9575 if (path) 9576 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 9577 struct __sanitizer_cdbr *cdbr = REAL(cdbr_open)(path, flags); 9578 if (cdbr) 9579 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr)); 9580 return cdbr; 9581} 9582 9583INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open_mem, void *base, SIZE_T size, 9584 int flags, void (*unmap)(void *, void *, SIZE_T), void *cookie) { 9585 void *ctx; 9586 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open_mem, base, size, flags, unmap, 9587 cookie); 9588 if (base && size) 9589 COMMON_INTERCEPTOR_READ_RANGE(ctx, base, size); 9590 struct __sanitizer_cdbr *cdbr = 9591 REAL(cdbr_open_mem)(base, size, flags, unmap, cookie); 9592 if (cdbr) 9593 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr)); 9594 return cdbr; 9595} 9596 9597INTERCEPTOR(u32, cdbr_entries, struct __sanitizer_cdbr *cdbr) { 9598 void *ctx; 9599 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_entries, cdbr); 9600 if (cdbr) 9601 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 9602 return REAL(cdbr_entries)(cdbr); 9603} 9604 9605INTERCEPTOR(int, cdbr_get, struct __sanitizer_cdbr *cdbr, u32 index, 9606 const void **data, SIZE_T *datalen) { 9607 void *ctx; 9608 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_get, cdbr, index, data, datalen); 9609 if (cdbr) 9610 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 9611 int ret = REAL(cdbr_get)(cdbr, index, data, datalen); 9612 if (!ret) { 9613 if (data) 9614 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data)); 9615 if (datalen) 9616 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen)); 9617 if (data && datalen) 9618 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen); 9619 } 9620 return ret; 9621} 9622 9623INTERCEPTOR(int, cdbr_find, struct __sanitizer_cdbr *cdbr, const void *key, 9624 SIZE_T keylen, const void **data, SIZE_T *datalen) { 9625 void *ctx; 9626 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_find, cdbr, key, keylen, data, datalen); 9627 if (cdbr) 9628 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 9629 if (key) 9630 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); 9631 int ret = REAL(cdbr_find)(cdbr, key, keylen, data, datalen); 9632 if (!ret) { 9633 if (data) 9634 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data)); 9635 if (datalen) 9636 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen)); 9637 if (data && datalen) 9638 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen); 9639 } 9640 return ret; 9641} 9642 9643INTERCEPTOR(void, cdbr_close, struct __sanitizer_cdbr *cdbr) { 9644 void *ctx; 9645 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_close, cdbr); 9646 if (cdbr) 9647 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 9648 REAL(cdbr_close)(cdbr); 9649} 9650 9651INTERCEPTOR(struct __sanitizer_cdbw *, cdbw_open) { 9652 void *ctx; 9653 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_open); 9654 struct __sanitizer_cdbw *ret = REAL(cdbw_open)(); 9655 if (ret) 9656 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); 9657 return ret; 9658} 9659 9660INTERCEPTOR(int, cdbw_put, struct __sanitizer_cdbw *cdbw, const void *key, 9661 SIZE_T keylen, const void *data, SIZE_T datalen) { 9662 void *ctx; 9663 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put, cdbw, key, keylen, data, datalen); 9664 if (cdbw) 9665 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9666 if (data && datalen) 9667 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen); 9668 if (key && keylen) 9669 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); 9670 int ret = REAL(cdbw_put)(cdbw, key, keylen, data, datalen); 9671 if (!ret && cdbw) 9672 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9673 return ret; 9674} 9675 9676INTERCEPTOR(int, cdbw_put_data, struct __sanitizer_cdbw *cdbw, const void *data, 9677 SIZE_T datalen, u32 *index) { 9678 void *ctx; 9679 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_data, cdbw, data, datalen, index); 9680 if (cdbw) 9681 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9682 if (data && datalen) 9683 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen); 9684 int ret = REAL(cdbw_put_data)(cdbw, data, datalen, index); 9685 if (!ret) { 9686 if (index) 9687 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, index, sizeof(*index)); 9688 if (cdbw) 9689 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9690 } 9691 return ret; 9692} 9693 9694INTERCEPTOR(int, cdbw_put_key, struct __sanitizer_cdbw *cdbw, const void *key, 9695 SIZE_T keylen, u32 index) { 9696 void *ctx; 9697 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_key, cdbw, key, keylen, index); 9698 if (cdbw) 9699 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9700 if (key && keylen) 9701 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); 9702 int ret = REAL(cdbw_put_key)(cdbw, key, keylen, index); 9703 if (!ret && cdbw) 9704 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9705 return ret; 9706} 9707 9708INTERCEPTOR(int, cdbw_output, struct __sanitizer_cdbw *cdbw, int output, 9709 const char descr[16], u32 (*seedgen)(void)) { 9710 void *ctx; 9711 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_output, cdbw, output, descr, seedgen); 9712 COMMON_INTERCEPTOR_FD_ACCESS(ctx, output); 9713 if (cdbw) 9714 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9715 if (descr) 9716 COMMON_INTERCEPTOR_READ_RANGE(ctx, descr, internal_strnlen(descr, 16)); 9717 if (seedgen) 9718 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)seedgen, sizeof(seedgen)); 9719 int ret = REAL(cdbw_output)(cdbw, output, descr, seedgen); 9720 if (!ret) { 9721 if (cdbw) 9722 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9723 if (output >= 0) 9724 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, output); 9725 } 9726 return ret; 9727} 9728 9729INTERCEPTOR(void, cdbw_close, struct __sanitizer_cdbw *cdbw) { 9730 void *ctx; 9731 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_close, cdbw); 9732 if (cdbw) 9733 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9734 REAL(cdbw_close)(cdbw); 9735} 9736 9737#define INIT_CDB \ 9738 COMMON_INTERCEPT_FUNCTION(cdbr_open); \ 9739 COMMON_INTERCEPT_FUNCTION(cdbr_open_mem); \ 9740 COMMON_INTERCEPT_FUNCTION(cdbr_entries); \ 9741 COMMON_INTERCEPT_FUNCTION(cdbr_get); \ 9742 COMMON_INTERCEPT_FUNCTION(cdbr_find); \ 9743 COMMON_INTERCEPT_FUNCTION(cdbr_close); \ 9744 COMMON_INTERCEPT_FUNCTION(cdbw_open); \ 9745 COMMON_INTERCEPT_FUNCTION(cdbw_put); \ 9746 COMMON_INTERCEPT_FUNCTION(cdbw_put_data); \ 9747 COMMON_INTERCEPT_FUNCTION(cdbw_put_key); \ 9748 COMMON_INTERCEPT_FUNCTION(cdbw_output); \ 9749 COMMON_INTERCEPT_FUNCTION(cdbw_close) 9750#else 9751#define INIT_CDB 9752#endif 9753 9754#if SANITIZER_INTERCEPT_GETFSENT 9755INTERCEPTOR(void *, getfsent) { 9756 void *ctx; 9757 COMMON_INTERCEPTOR_ENTER(ctx, getfsent); 9758 void *ret = REAL(getfsent)(); 9759 if (ret) 9760 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); 9761 return ret; 9762} 9763 9764INTERCEPTOR(void *, getfsspec, const char *spec) { 9765 void *ctx; 9766 COMMON_INTERCEPTOR_ENTER(ctx, getfsspec, spec); 9767 if (spec) 9768 COMMON_INTERCEPTOR_READ_RANGE(ctx, spec, internal_strlen(spec) + 1); 9769 void *ret = REAL(getfsspec)(spec); 9770 if (ret) 9771 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); 9772 return ret; 9773} 9774 9775INTERCEPTOR(void *, getfsfile, const char *file) { 9776 void *ctx; 9777 COMMON_INTERCEPTOR_ENTER(ctx, getfsfile, file); 9778 if (file) 9779 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1); 9780 void *ret = REAL(getfsfile)(file); 9781 if (ret) 9782 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); 9783 return ret; 9784} 9785 9786#define INIT_GETFSENT \ 9787 COMMON_INTERCEPT_FUNCTION(getfsent); \ 9788 COMMON_INTERCEPT_FUNCTION(getfsspec); \ 9789 COMMON_INTERCEPT_FUNCTION(getfsfile); 9790#else 9791#define INIT_GETFSENT 9792#endif 9793 9794#if SANITIZER_INTERCEPT_ARC4RANDOM 9795INTERCEPTOR(void, arc4random_buf, void *buf, SIZE_T len) { 9796 void *ctx; 9797 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_buf, buf, len); 9798 REAL(arc4random_buf)(buf, len); 9799 if (buf && len) 9800 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, len); 9801} 9802 9803INTERCEPTOR(void, arc4random_addrandom, u8 *dat, int datlen) { 9804 void *ctx; 9805 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_addrandom, dat, datlen); 9806 if (dat && datlen) 9807 COMMON_INTERCEPTOR_READ_RANGE(ctx, dat, datlen); 9808 REAL(arc4random_addrandom)(dat, datlen); 9809} 9810 9811#define INIT_ARC4RANDOM \ 9812 COMMON_INTERCEPT_FUNCTION(arc4random_buf); \ 9813 COMMON_INTERCEPT_FUNCTION(arc4random_addrandom); 9814#else 9815#define INIT_ARC4RANDOM 9816#endif 9817 9818#if SANITIZER_INTERCEPT_POPEN 9819INTERCEPTOR(__sanitizer_FILE *, popen, const char *command, const char *type) { 9820 void *ctx; 9821 COMMON_INTERCEPTOR_ENTER(ctx, popen, command, type); 9822 if (command) 9823 COMMON_INTERCEPTOR_READ_RANGE(ctx, command, internal_strlen(command) + 1); 9824 if (type) 9825 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1); 9826 __sanitizer_FILE *res = REAL(popen)(command, type); 9827 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr); 9828 if (res) unpoison_file(res); 9829 return res; 9830} 9831#define INIT_POPEN COMMON_INTERCEPT_FUNCTION(popen) 9832#else 9833#define INIT_POPEN 9834#endif 9835 9836#if SANITIZER_INTERCEPT_POPENVE 9837INTERCEPTOR(__sanitizer_FILE *, popenve, const char *path, 9838 char *const *argv, char *const *envp, const char *type) { 9839 void *ctx; 9840 COMMON_INTERCEPTOR_ENTER(ctx, popenve, path, argv, envp, type); 9841 if (path) 9842 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); 9843 if (argv) { 9844 for (char *const *pa = argv; ; ++pa) { 9845 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); 9846 if (!*pa) 9847 break; 9848 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1); 9849 } 9850 } 9851 if (envp) { 9852 for (char *const *pa = envp; ; ++pa) { 9853 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); 9854 if (!*pa) 9855 break; 9856 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1); 9857 } 9858 } 9859 if (type) 9860 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1); 9861 __sanitizer_FILE *res = REAL(popenve)(path, argv, envp, type); 9862 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr); 9863 if (res) unpoison_file(res); 9864 return res; 9865} 9866#define INIT_POPENVE COMMON_INTERCEPT_FUNCTION(popenve) 9867#else 9868#define INIT_POPENVE 9869#endif 9870 9871#if SANITIZER_INTERCEPT_PCLOSE 9872INTERCEPTOR(int, pclose, __sanitizer_FILE *fp) { 9873 void *ctx; 9874 COMMON_INTERCEPTOR_ENTER(ctx, pclose, fp); 9875 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 9876 const FileMetadata *m = GetInterceptorMetadata(fp); 9877 int res = REAL(pclose)(fp); 9878 if (m) { 9879 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); 9880 DeleteInterceptorMetadata(fp); 9881 } 9882 return res; 9883} 9884#define INIT_PCLOSE COMMON_INTERCEPT_FUNCTION(pclose); 9885#else 9886#define INIT_PCLOSE 9887#endif 9888 9889#if SANITIZER_INTERCEPT_FUNOPEN 9890typedef int (*funopen_readfn)(void *cookie, char *buf, int len); 9891typedef int (*funopen_writefn)(void *cookie, const char *buf, int len); 9892typedef OFF_T (*funopen_seekfn)(void *cookie, OFF_T offset, int whence); 9893typedef int (*funopen_closefn)(void *cookie); 9894 9895struct WrappedFunopenCookie { 9896 void *real_cookie; 9897 funopen_readfn real_read; 9898 funopen_writefn real_write; 9899 funopen_seekfn real_seek; 9900 funopen_closefn real_close; 9901}; 9902 9903static int wrapped_funopen_read(void *cookie, char *buf, int len) { 9904 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9905 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9906 funopen_readfn real_read = wrapped_cookie->real_read; 9907 return real_read(wrapped_cookie->real_cookie, buf, len); 9908} 9909 9910static int wrapped_funopen_write(void *cookie, const char *buf, int len) { 9911 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9912 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9913 funopen_writefn real_write = wrapped_cookie->real_write; 9914 return real_write(wrapped_cookie->real_cookie, buf, len); 9915} 9916 9917static OFF_T wrapped_funopen_seek(void *cookie, OFF_T offset, int whence) { 9918 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9919 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9920 funopen_seekfn real_seek = wrapped_cookie->real_seek; 9921 return real_seek(wrapped_cookie->real_cookie, offset, whence); 9922} 9923 9924static int wrapped_funopen_close(void *cookie) { 9925 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 9926 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9927 funopen_closefn real_close = wrapped_cookie->real_close; 9928 int res = real_close(wrapped_cookie->real_cookie); 9929 InternalFree(wrapped_cookie); 9930 return res; 9931} 9932 9933INTERCEPTOR(__sanitizer_FILE *, funopen, void *cookie, funopen_readfn readfn, 9934 funopen_writefn writefn, funopen_seekfn seekfn, 9935 funopen_closefn closefn) { 9936 void *ctx; 9937 COMMON_INTERCEPTOR_ENTER(ctx, funopen, cookie, readfn, writefn, seekfn, 9938 closefn); 9939 9940 WrappedFunopenCookie *wrapped_cookie = 9941 (WrappedFunopenCookie *)InternalAlloc(sizeof(WrappedFunopenCookie)); 9942 wrapped_cookie->real_cookie = cookie; 9943 wrapped_cookie->real_read = readfn; 9944 wrapped_cookie->real_write = writefn; 9945 wrapped_cookie->real_seek = seekfn; 9946 wrapped_cookie->real_close = closefn; 9947 9948 __sanitizer_FILE *res = 9949 REAL(funopen)(wrapped_cookie, 9950 readfn ? wrapped_funopen_read : nullptr, 9951 writefn ? wrapped_funopen_write : nullptr, 9952 seekfn ? wrapped_funopen_seek : nullptr, 9953 closefn ? wrapped_funopen_close : nullptr); 9954 if (res) 9955 unpoison_file(res); 9956 return res; 9957} 9958#define INIT_FUNOPEN COMMON_INTERCEPT_FUNCTION(funopen) 9959#else 9960#define INIT_FUNOPEN 9961#endif 9962 9963#if SANITIZER_INTERCEPT_FUNOPEN2 9964typedef SSIZE_T (*funopen2_readfn)(void *cookie, void *buf, SIZE_T len); 9965typedef SSIZE_T (*funopen2_writefn)(void *cookie, const void *buf, SIZE_T len); 9966typedef OFF_T (*funopen2_seekfn)(void *cookie, OFF_T offset, int whence); 9967typedef int (*funopen2_flushfn)(void *cookie); 9968typedef int (*funopen2_closefn)(void *cookie); 9969 9970struct WrappedFunopen2Cookie { 9971 void *real_cookie; 9972 funopen2_readfn real_read; 9973 funopen2_writefn real_write; 9974 funopen2_seekfn real_seek; 9975 funopen2_flushfn real_flush; 9976 funopen2_closefn real_close; 9977}; 9978 9979static SSIZE_T wrapped_funopen2_read(void *cookie, void *buf, SIZE_T len) { 9980 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9981 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9982 funopen2_readfn real_read = wrapped_cookie->real_read; 9983 return real_read(wrapped_cookie->real_cookie, buf, len); 9984} 9985 9986static SSIZE_T wrapped_funopen2_write(void *cookie, const void *buf, 9987 SIZE_T len) { 9988 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9989 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9990 funopen2_writefn real_write = wrapped_cookie->real_write; 9991 return real_write(wrapped_cookie->real_cookie, buf, len); 9992} 9993 9994static OFF_T wrapped_funopen2_seek(void *cookie, OFF_T offset, int whence) { 9995 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9996 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9997 funopen2_seekfn real_seek = wrapped_cookie->real_seek; 9998 return real_seek(wrapped_cookie->real_cookie, offset, whence); 9999} 10000 10001static int wrapped_funopen2_flush(void *cookie) { 10002 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 10003 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 10004 funopen2_flushfn real_flush = wrapped_cookie->real_flush; 10005 return real_flush(wrapped_cookie->real_cookie); 10006} 10007 10008static int wrapped_funopen2_close(void *cookie) { 10009 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 10010 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 10011 funopen2_closefn real_close = wrapped_cookie->real_close; 10012 int res = real_close(wrapped_cookie->real_cookie); 10013 InternalFree(wrapped_cookie); 10014 return res; 10015} 10016 10017INTERCEPTOR(__sanitizer_FILE *, funopen2, void *cookie, funopen2_readfn readfn, 10018 funopen2_writefn writefn, funopen2_seekfn seekfn, 10019 funopen2_flushfn flushfn, funopen2_closefn closefn) { 10020 void *ctx; 10021 COMMON_INTERCEPTOR_ENTER(ctx, funopen2, cookie, readfn, writefn, seekfn, 10022 flushfn, closefn); 10023 10024 WrappedFunopen2Cookie *wrapped_cookie = 10025 (WrappedFunopen2Cookie *)InternalAlloc(sizeof(WrappedFunopen2Cookie)); 10026 wrapped_cookie->real_cookie = cookie; 10027 wrapped_cookie->real_read = readfn; 10028 wrapped_cookie->real_write = writefn; 10029 wrapped_cookie->real_seek = seekfn; 10030 wrapped_cookie->real_flush = flushfn; 10031 wrapped_cookie->real_close = closefn; 10032 10033 __sanitizer_FILE *res = 10034 REAL(funopen2)(wrapped_cookie, 10035 readfn ? wrapped_funopen2_read : nullptr, 10036 writefn ? wrapped_funopen2_write : nullptr, 10037 seekfn ? wrapped_funopen2_seek : nullptr, 10038 flushfn ? wrapped_funopen2_flush : nullptr, 10039 closefn ? wrapped_funopen2_close : nullptr); 10040 if (res) 10041 unpoison_file(res); 10042 return res; 10043} 10044#define INIT_FUNOPEN2 COMMON_INTERCEPT_FUNCTION(funopen2) 10045#else 10046#define INIT_FUNOPEN2 10047#endif 10048 10049#if SANITIZER_INTERCEPT_FDEVNAME 10050INTERCEPTOR(char *, fdevname, int fd) { 10051 void *ctx; 10052 COMMON_INTERCEPTOR_ENTER(ctx, fdevname, fd); 10053 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 10054 char *name = REAL(fdevname)(fd); 10055 if (name) { 10056 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); 10057 if (fd > 0) 10058 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 10059 } 10060 return name; 10061} 10062 10063INTERCEPTOR(char *, fdevname_r, int fd, char *buf, SIZE_T len) { 10064 void *ctx; 10065 COMMON_INTERCEPTOR_ENTER(ctx, fdevname_r, fd, buf, len); 10066 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 10067 char *name = REAL(fdevname_r)(fd, buf, len); 10068 if (name && buf && len > 0) { 10069 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1); 10070 if (fd > 0) 10071 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 10072 } 10073 return name; 10074} 10075 10076#define INIT_FDEVNAME \ 10077 COMMON_INTERCEPT_FUNCTION(fdevname); \ 10078 COMMON_INTERCEPT_FUNCTION(fdevname_r); 10079#else 10080#define INIT_FDEVNAME 10081#endif 10082 10083#if SANITIZER_INTERCEPT_GETUSERSHELL 10084INTERCEPTOR(char *, getusershell) { 10085 void *ctx; 10086 COMMON_INTERCEPTOR_ENTER(ctx, getusershell); 10087 char *res = REAL(getusershell)(); 10088 if (res) 10089 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 10090 return res; 10091} 10092 10093#define INIT_GETUSERSHELL COMMON_INTERCEPT_FUNCTION(getusershell); 10094#else 10095#define INIT_GETUSERSHELL 10096#endif 10097 10098#if SANITIZER_INTERCEPT_SL_INIT 10099INTERCEPTOR(void *, sl_init) { 10100 void *ctx; 10101 COMMON_INTERCEPTOR_ENTER(ctx, sl_init); 10102 void *res = REAL(sl_init)(); 10103 if (res) 10104 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_StringList_sz); 10105 return res; 10106} 10107 10108INTERCEPTOR(int, sl_add, void *sl, char *item) { 10109 void *ctx; 10110 COMMON_INTERCEPTOR_ENTER(ctx, sl_add, sl, item); 10111 if (sl) 10112 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 10113 if (item) 10114 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1); 10115 int res = REAL(sl_add)(sl, item); 10116 if (!res) 10117 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 10118 return res; 10119} 10120 10121INTERCEPTOR(char *, sl_find, void *sl, const char *item) { 10122 void *ctx; 10123 COMMON_INTERCEPTOR_ENTER(ctx, sl_find, sl, item); 10124 if (sl) 10125 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 10126 if (item) 10127 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1); 10128 char *res = REAL(sl_find)(sl, item); 10129 if (res) 10130 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); 10131 return res; 10132} 10133 10134INTERCEPTOR(void, sl_free, void *sl, int freeall) { 10135 void *ctx; 10136 COMMON_INTERCEPTOR_ENTER(ctx, sl_free, sl, freeall); 10137 if (sl) 10138 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 10139 REAL(sl_free)(sl, freeall); 10140} 10141 10142#define INIT_SL_INIT \ 10143 COMMON_INTERCEPT_FUNCTION(sl_init); \ 10144 COMMON_INTERCEPT_FUNCTION(sl_add); \ 10145 COMMON_INTERCEPT_FUNCTION(sl_find); \ 10146 COMMON_INTERCEPT_FUNCTION(sl_free); 10147#else 10148#define INIT_SL_INIT 10149#endif 10150 10151#if SANITIZER_INTERCEPT_GETRANDOM 10152INTERCEPTOR(SSIZE_T, getrandom, void *buf, SIZE_T buflen, unsigned int flags) { 10153 void *ctx; 10154 COMMON_INTERCEPTOR_ENTER(ctx, getrandom, buf, buflen, flags); 10155 SSIZE_T n = REAL(getrandom)(buf, buflen, flags); 10156 if (n > 0) { 10157 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, n); 10158 } 10159 return n; 10160} 10161#define INIT_GETRANDOM COMMON_INTERCEPT_FUNCTION(getrandom) 10162#else 10163#define INIT_GETRANDOM 10164#endif 10165 10166#if SANITIZER_INTERCEPT_CRYPT 10167INTERCEPTOR(char *, crypt, char *key, char *salt) { 10168 void *ctx; 10169 COMMON_INTERCEPTOR_ENTER(ctx, crypt, key, salt); 10170 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, internal_strlen(key) + 1); 10171 COMMON_INTERCEPTOR_READ_RANGE(ctx, salt, internal_strlen(salt) + 1); 10172 char *res = REAL(crypt)(key, salt); 10173 if (res != nullptr) 10174 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 10175 return res; 10176} 10177#define INIT_CRYPT COMMON_INTERCEPT_FUNCTION(crypt); 10178#else 10179#define INIT_CRYPT 10180#endif 10181 10182#if SANITIZER_INTERCEPT_CRYPT_R 10183INTERCEPTOR(char *, crypt_r, char *key, char *salt, void *data) { 10184 void *ctx; 10185 COMMON_INTERCEPTOR_ENTER(ctx, crypt_r, key, salt, data); 10186 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, internal_strlen(key) + 1); 10187 COMMON_INTERCEPTOR_READ_RANGE(ctx, salt, internal_strlen(salt) + 1); 10188 char *res = REAL(crypt_r)(key, salt, data); 10189 if (res != nullptr) { 10190 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, 10191 __sanitizer::struct_crypt_data_sz); 10192 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); 10193 } 10194 return res; 10195} 10196#define INIT_CRYPT_R COMMON_INTERCEPT_FUNCTION(crypt_r); 10197#else 10198#define INIT_CRYPT_R 10199#endif 10200 10201#if SANITIZER_INTERCEPT_GETENTROPY 10202INTERCEPTOR(int, getentropy, void *buf, SIZE_T buflen) { 10203 void *ctx; 10204 COMMON_INTERCEPTOR_ENTER(ctx, getentropy, buf, buflen); 10205 int r = REAL(getentropy)(buf, buflen); 10206 if (r == 0) { 10207 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 10208 } 10209 return r; 10210} 10211#define INIT_GETENTROPY COMMON_INTERCEPT_FUNCTION(getentropy) 10212#else 10213#define INIT_GETENTROPY 10214#endif 10215 10216#if SANITIZER_INTERCEPT_QSORT_R 10217typedef int (*qsort_r_compar_f)(const void *, const void *, void *); 10218struct qsort_r_compar_params { 10219 SIZE_T size; 10220 qsort_r_compar_f compar; 10221 void *arg; 10222}; 10223static int wrapped_qsort_r_compar(const void *a, const void *b, void *arg) { 10224 qsort_r_compar_params *params = (qsort_r_compar_params *)arg; 10225 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 10226 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, params->size); 10227 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, params->size); 10228 return params->compar(a, b, params->arg); 10229} 10230 10231INTERCEPTOR(void, qsort_r, void *base, SIZE_T nmemb, SIZE_T size, 10232 qsort_r_compar_f compar, void *arg) { 10233 void *ctx; 10234 COMMON_INTERCEPTOR_ENTER(ctx, qsort_r, base, nmemb, size, compar, arg); 10235 // Run the comparator over all array elements to detect any memory issues. 10236 if (nmemb > 1) { 10237 for (SIZE_T i = 0; i < nmemb - 1; ++i) { 10238 void *p = (void *)((char *)base + i * size); 10239 void *q = (void *)((char *)base + (i + 1) * size); 10240 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 10241 compar(p, q, arg); 10242 } 10243 } 10244 qsort_r_compar_params params = {size, compar, arg}; 10245 REAL(qsort_r)(base, nmemb, size, wrapped_qsort_r_compar, ¶ms); 10246 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size); 10247} 10248# define INIT_QSORT_R COMMON_INTERCEPT_FUNCTION(qsort_r) 10249#else 10250# define INIT_QSORT_R 10251#endif 10252 10253#if SANITIZER_INTERCEPT_QSORT && SANITIZER_INTERCEPT_QSORT_R 10254INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size, 10255 qsort_r_compar_f compar) { 10256 void *ctx; 10257 COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar); 10258 WRAP(qsort_r)(base, nmemb, size, compar, nullptr); 10259} 10260# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort) 10261#elif SANITIZER_INTERCEPT_QSORT && !SANITIZER_INTERCEPT_QSORT_R 10262// Glibc qsort uses a temporary buffer allocated either on stack or on heap. 10263// Poisoned memory from there may get copied into the comparator arguments, 10264// where it needs to be dealt with. But even that is not enough - the results of 10265// the sort may be copied into the input/output array based on the results of 10266// the comparator calls, but directly from the temp memory, bypassing the 10267// unpoisoning done in wrapped_qsort_compar. We deal with this by, again, 10268// unpoisoning the entire array after the sort is done. 10269// 10270// We can not check that the entire array is initialized at the beginning. IMHO, 10271// it's fine for parts of the sorted objects to contain uninitialized memory, 10272// ex. as padding in structs. 10273typedef int (*qsort_compar_f)(const void *, const void *); 10274static THREADLOCAL qsort_compar_f qsort_compar; 10275static THREADLOCAL SIZE_T qsort_size; 10276static int wrapped_qsort_compar(const void *a, const void *b) { 10277 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 10278 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, qsort_size); 10279 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, qsort_size); 10280 return qsort_compar(a, b); 10281} 10282 10283INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size, 10284 qsort_compar_f compar) { 10285 void *ctx; 10286 COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar); 10287 // Run the comparator over all array elements to detect any memory issues. 10288 if (nmemb > 1) { 10289 for (SIZE_T i = 0; i < nmemb - 1; ++i) { 10290 void *p = (void *)((char *)base + i * size); 10291 void *q = (void *)((char *)base + (i + 1) * size); 10292 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 10293 compar(p, q); 10294 } 10295 } 10296 qsort_compar_f old_compar = qsort_compar; 10297 SIZE_T old_size = qsort_size; 10298 // Handle qsort() implementations that recurse using an 10299 // interposable function call: 10300 bool already_wrapped = compar == wrapped_qsort_compar; 10301 if (already_wrapped) { 10302 // This case should only happen if the qsort() implementation calls itself 10303 // using a preemptible function call (e.g. the FreeBSD libc version). 10304 // Check that the size and comparator arguments are as expected. 10305 CHECK_NE(compar, qsort_compar); 10306 CHECK_EQ(qsort_size, size); 10307 } else { 10308 qsort_compar = compar; 10309 qsort_size = size; 10310 } 10311 REAL(qsort)(base, nmemb, size, wrapped_qsort_compar); 10312 if (!already_wrapped) { 10313 qsort_compar = old_compar; 10314 qsort_size = old_size; 10315 } 10316 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size); 10317} 10318# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort) 10319#else 10320# define INIT_QSORT 10321#endif 10322 10323#if SANITIZER_INTERCEPT_BSEARCH 10324typedef int (*bsearch_compar_f)(const void *, const void *); 10325struct bsearch_compar_params { 10326 const void *key; 10327 bsearch_compar_f compar; 10328}; 10329 10330static int wrapped_bsearch_compar(const void *key, const void *b) { 10331 const bsearch_compar_params *params = (const bsearch_compar_params *)key; 10332 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 10333 return params->compar(params->key, b); 10334} 10335 10336INTERCEPTOR(void *, bsearch, const void *key, const void *base, SIZE_T nmemb, 10337 SIZE_T size, bsearch_compar_f compar) { 10338 void *ctx; 10339 COMMON_INTERCEPTOR_ENTER(ctx, bsearch, key, base, nmemb, size, compar); 10340 bsearch_compar_params params = {key, compar}; 10341 return REAL(bsearch)(¶ms, base, nmemb, size, wrapped_bsearch_compar); 10342} 10343# define INIT_BSEARCH COMMON_INTERCEPT_FUNCTION(bsearch) 10344#else 10345# define INIT_BSEARCH 10346#endif 10347 10348#if SANITIZER_INTERCEPT_SIGALTSTACK 10349INTERCEPTOR(int, sigaltstack, void *ss, void *oss) { 10350 void *ctx; 10351 COMMON_INTERCEPTOR_ENTER(ctx, sigaltstack, ss, oss); 10352 int r = REAL(sigaltstack)(ss, oss); 10353 if (r == 0 && oss != nullptr) { 10354 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oss, struct_stack_t_sz); 10355 } 10356 return r; 10357} 10358#define INIT_SIGALTSTACK COMMON_INTERCEPT_FUNCTION(sigaltstack) 10359#else 10360#define INIT_SIGALTSTACK 10361#endif 10362 10363#if SANITIZER_INTERCEPT_PROCCTL 10364INTERCEPTOR(int, procctl, int idtype, u64 id, int cmd, uptr data) { 10365 void *ctx; 10366 COMMON_INTERCEPTOR_ENTER(ctx, procctl, idtype, id, cmd, data); 10367 static const int PROC_REAP_ACQUIRE = 2; 10368 static const int PROC_REAP_RELEASE = 3; 10369 static const int PROC_REAP_STATUS = 4; 10370 static const int PROC_REAP_GETPIDS = 5; 10371 static const int PROC_REAP_KILL = 6; 10372 if (cmd < PROC_REAP_ACQUIRE || cmd > PROC_REAP_KILL) { 10373 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, sizeof(int)); 10374 } else { 10375 // reap_acquire/reap_release bears no arguments. 10376 if (cmd > PROC_REAP_RELEASE) { 10377 unsigned int reapsz; 10378 switch (cmd) { 10379 case PROC_REAP_STATUS: 10380 reapsz = struct_procctl_reaper_status_sz; 10381 break; 10382 case PROC_REAP_GETPIDS: 10383 reapsz = struct_procctl_reaper_pids_sz; 10384 break; 10385 case PROC_REAP_KILL: 10386 reapsz = struct_procctl_reaper_kill_sz; 10387 break; 10388 } 10389 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, reapsz); 10390 } 10391 } 10392 return REAL(procctl)(idtype, id, cmd, data); 10393} 10394#define INIT_PROCCTL COMMON_INTERCEPT_FUNCTION(procctl) 10395#else 10396#define INIT_PROCCTL 10397#endif 10398 10399#if SANITIZER_INTERCEPT_UNAME 10400INTERCEPTOR(int, uname, struct utsname *utsname) { 10401#if SANITIZER_LINUX 10402 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 10403 return internal_uname(utsname); 10404#endif 10405 void *ctx; 10406 COMMON_INTERCEPTOR_ENTER(ctx, uname, utsname); 10407 int res = REAL(uname)(utsname); 10408 if (!res) 10409 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname, 10410 __sanitizer::struct_utsname_sz); 10411 return res; 10412} 10413#define INIT_UNAME COMMON_INTERCEPT_FUNCTION(uname) 10414#else 10415#define INIT_UNAME 10416#endif 10417 10418#if SANITIZER_INTERCEPT___XUNAME 10419// FreeBSD's <sys/utsname.h> define uname() as 10420// static __inline int uname(struct utsname *name) { 10421// return __xuname(SYS_NMLN, (void*)name); 10422// } 10423INTERCEPTOR(int, __xuname, int size, void *utsname) { 10424 void *ctx; 10425 COMMON_INTERCEPTOR_ENTER(ctx, __xuname, size, utsname); 10426 int res = REAL(__xuname)(size, utsname); 10427 if (!res) 10428 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname, 10429 __sanitizer::struct_utsname_sz); 10430 return res; 10431} 10432#define INIT___XUNAME COMMON_INTERCEPT_FUNCTION(__xuname) 10433#else 10434#define INIT___XUNAME 10435#endif 10436 10437#include "sanitizer_common_interceptors_netbsd_compat.inc" 10438 10439static void InitializeCommonInterceptors() { 10440#if SI_POSIX 10441 static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1]; 10442 interceptor_metadata_map = new ((void *)&metadata_mem) MetadataHashMap(); 10443#endif 10444 10445 INIT_MMAP; 10446 INIT_MMAP64; 10447 INIT_TEXTDOMAIN; 10448 INIT_STRLEN; 10449 INIT_STRNLEN; 10450 INIT_STRNDUP; 10451 INIT___STRNDUP; 10452 INIT_STRCMP; 10453 INIT_STRNCMP; 10454 INIT_STRCASECMP; 10455 INIT_STRNCASECMP; 10456 INIT_STRSTR; 10457 INIT_STRCASESTR; 10458 INIT_STRCHR; 10459 INIT_STRCHRNUL; 10460 INIT_STRRCHR; 10461 INIT_STRSPN; 10462 INIT_STRTOK; 10463 INIT_STRPBRK; 10464 INIT_STRXFRM; 10465 INIT___STRXFRM_L; 10466 INIT_MEMSET; 10467 INIT_MEMMOVE; 10468 INIT_MEMCPY; 10469 INIT_MEMCHR; 10470 INIT_MEMCMP; 10471 INIT_BCMP; 10472 INIT_MEMRCHR; 10473 INIT_MEMMEM; 10474 INIT_READ; 10475 INIT_FREAD; 10476 INIT_PREAD; 10477 INIT_PREAD64; 10478 INIT_READV; 10479 INIT_PREADV; 10480 INIT_PREADV64; 10481 INIT_WRITE; 10482 INIT_FWRITE; 10483 INIT_PWRITE; 10484 INIT_PWRITE64; 10485 INIT_WRITEV; 10486 INIT_PWRITEV; 10487 INIT_PWRITEV64; 10488 INIT_FGETS; 10489 INIT_FPUTS; 10490 INIT_PUTS; 10491 INIT_PRCTL; 10492 INIT_LOCALTIME_AND_FRIENDS; 10493 INIT_STRPTIME; 10494 INIT_SCANF; 10495 INIT_ISOC99_SCANF; 10496 INIT_PRINTF; 10497 INIT_PRINTF_L; 10498 INIT_ISOC99_PRINTF; 10499 INIT_FREXP; 10500 INIT_FREXPF_FREXPL; 10501 INIT_GETPWNAM_AND_FRIENDS; 10502 INIT_GETPWNAM_R_AND_FRIENDS; 10503 INIT_GETPWENT; 10504 INIT_FGETPWENT; 10505 INIT_GETPWENT_R; 10506 INIT_FGETPWENT_R; 10507 INIT_FGETGRENT_R; 10508 INIT_SETPWENT; 10509 INIT_CLOCK_GETTIME; 10510 INIT_CLOCK_GETCPUCLOCKID; 10511 INIT_GETITIMER; 10512 INIT_TIME; 10513 INIT_GLOB; 10514 INIT_GLOB64; 10515 INIT___B64_TO; 10516 INIT___DN_EXPAND; 10517 INIT_POSIX_SPAWN; 10518 INIT_WAIT; 10519 INIT_WAIT4; 10520 INIT_INET; 10521 INIT_PTHREAD_GETSCHEDPARAM; 10522 INIT_GETADDRINFO; 10523 INIT_GETNAMEINFO; 10524 INIT_GETSOCKNAME; 10525 INIT_GETHOSTBYNAME; 10526 INIT_GETHOSTBYNAME2; 10527 INIT_GETHOSTBYNAME_R; 10528 INIT_GETHOSTBYNAME2_R; 10529 INIT_GETHOSTBYADDR_R; 10530 INIT_GETHOSTENT_R; 10531 INIT_GETSOCKOPT; 10532 INIT_ACCEPT; 10533 INIT_ACCEPT4; 10534 INIT_PACCEPT; 10535 INIT_MODF; 10536 INIT_RECVMSG; 10537 INIT_SENDMSG; 10538 INIT_RECVMMSG; 10539 INIT_SENDMMSG; 10540 INIT_SYSMSG; 10541 INIT_GETPEERNAME; 10542 INIT_IOCTL; 10543 INIT_INET_ATON; 10544 INIT_SYSINFO; 10545 INIT_READDIR; 10546 INIT_READDIR64; 10547 INIT_PTRACE; 10548 INIT_SETLOCALE; 10549 INIT_GETCWD; 10550 INIT_GET_CURRENT_DIR_NAME; 10551 INIT_STRTOIMAX; 10552 INIT_MBSTOWCS; 10553 INIT_MBSNRTOWCS; 10554 INIT_WCSTOMBS; 10555 INIT_WCSNRTOMBS; 10556 INIT_WCRTOMB; 10557 INIT_WCTOMB; 10558 INIT_TCGETATTR; 10559 INIT_REALPATH; 10560 INIT_CANONICALIZE_FILE_NAME; 10561 INIT_CONFSTR; 10562 INIT_SCHED_GETAFFINITY; 10563 INIT_SCHED_GETPARAM; 10564 INIT_STRERROR; 10565 INIT_STRERROR_R; 10566 INIT_XPG_STRERROR_R; 10567 INIT_SCANDIR; 10568 INIT_SCANDIR64; 10569 INIT_GETGROUPS; 10570 INIT_POLL; 10571 INIT_PPOLL; 10572 INIT_WORDEXP; 10573 INIT_SIGWAIT; 10574 INIT_SIGWAITINFO; 10575 INIT_SIGTIMEDWAIT; 10576 INIT_SIGSETOPS; 10577 INIT_SIGSET_LOGICOPS; 10578 INIT_SIGPENDING; 10579 INIT_SIGPROCMASK; 10580 INIT_PTHREAD_SIGMASK; 10581 INIT_BACKTRACE; 10582 INIT__EXIT; 10583 INIT_PTHREAD_MUTEX_LOCK; 10584 INIT_PTHREAD_MUTEX_UNLOCK; 10585 INIT___PTHREAD_MUTEX_LOCK; 10586 INIT___PTHREAD_MUTEX_UNLOCK; 10587 INIT___LIBC_MUTEX_LOCK; 10588 INIT___LIBC_MUTEX_UNLOCK; 10589 INIT___LIBC_THR_SETCANCELSTATE; 10590 INIT_GETMNTENT; 10591 INIT_GETMNTENT_R; 10592 INIT_STATFS; 10593 INIT_STATFS64; 10594 INIT_STATVFS; 10595 INIT_STATVFS64; 10596 INIT_INITGROUPS; 10597 INIT_ETHER_NTOA_ATON; 10598 INIT_ETHER_HOST; 10599 INIT_ETHER_R; 10600 INIT_SHMCTL; 10601 INIT_RANDOM_R; 10602 INIT_PTHREAD_ATTR_GET; 10603 INIT_PTHREAD_ATTR_GET_SCHED; 10604 INIT_PTHREAD_ATTR_GETINHERITSCHED; 10605 INIT_PTHREAD_ATTR_GETAFFINITY_NP; 10606 INIT_PTHREAD_GETAFFINITY_NP; 10607 INIT_PTHREAD_MUTEXATTR_GETPSHARED; 10608 INIT_PTHREAD_MUTEXATTR_GETTYPE; 10609 INIT_PTHREAD_MUTEXATTR_GETPROTOCOL; 10610 INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING; 10611 INIT_PTHREAD_MUTEXATTR_GETROBUST; 10612 INIT_PTHREAD_MUTEXATTR_GETROBUST_NP; 10613 INIT_PTHREAD_RWLOCKATTR_GETPSHARED; 10614 INIT_PTHREAD_RWLOCKATTR_GETKIND_NP; 10615 INIT_PTHREAD_CONDATTR_GETPSHARED; 10616 INIT_PTHREAD_CONDATTR_GETCLOCK; 10617 INIT_PTHREAD_BARRIERATTR_GETPSHARED; 10618 INIT_TMPNAM; 10619 INIT_TMPNAM_R; 10620 INIT_PTSNAME; 10621 INIT_PTSNAME_R; 10622 INIT_TTYNAME; 10623 INIT_TTYNAME_R; 10624 INIT_TEMPNAM; 10625 INIT_PTHREAD_SETNAME_NP; 10626 INIT_PTHREAD_GETNAME_NP; 10627 INIT_SINCOS; 10628 INIT_REMQUO; 10629 INIT_REMQUOL; 10630 INIT_LGAMMA; 10631 INIT_LGAMMAL; 10632 INIT_LGAMMA_R; 10633 INIT_LGAMMAL_R; 10634 INIT_DRAND48_R; 10635 INIT_RAND_R; 10636 INIT_GETLINE; 10637 INIT_ICONV; 10638 INIT_TIMES; 10639 INIT_TLS_GET_ADDR; 10640 INIT_LISTXATTR; 10641 INIT_GETXATTR; 10642 INIT_GETRESID; 10643 INIT_GETIFADDRS; 10644 INIT_IF_INDEXTONAME; 10645 INIT_CAPGET; 10646 INIT_AEABI_MEM; 10647 INIT___BZERO; 10648 INIT_BZERO; 10649 INIT_FTIME; 10650 INIT_XDR; 10651 INIT_XDRREC_LINUX; 10652 INIT_TSEARCH; 10653 INIT_LIBIO_INTERNALS; 10654 INIT_FOPEN; 10655 INIT_FOPEN64; 10656 INIT_FLOPEN; 10657 INIT_OPEN_MEMSTREAM; 10658 INIT_OBSTACK; 10659 INIT_FFLUSH; 10660 INIT_FCLOSE; 10661 INIT_DLOPEN_DLCLOSE; 10662 INIT_GETPASS; 10663 INIT_TIMERFD; 10664 INIT_MLOCKX; 10665 INIT_FOPENCOOKIE; 10666 INIT_SEM; 10667 INIT_PTHREAD_SETCANCEL; 10668 INIT_MINCORE; 10669 INIT_PROCESS_VM_READV; 10670 INIT_CTERMID; 10671 INIT_CTERMID_R; 10672 INIT_RECV_RECVFROM; 10673 INIT_SEND_SENDTO; 10674 INIT_STAT; 10675 INIT_STAT64; 10676 INIT_EVENTFD_READ_WRITE; 10677 INIT_LSTAT; 10678 INIT_LSTAT64; 10679 INIT___XSTAT; 10680 INIT___XSTAT64; 10681 INIT___LXSTAT; 10682 INIT___LXSTAT64; 10683 // FIXME: add other *stat interceptors. 10684 INIT_UTMP; 10685 INIT_UTMPX; 10686 INIT_GETLOADAVG; 10687 INIT_WCSLEN; 10688 INIT_WCSCAT; 10689 INIT_WCSDUP; 10690 INIT_WCSXFRM; 10691 INIT___WCSXFRM_L; 10692 INIT_ACCT; 10693 INIT_USER_FROM_UID; 10694 INIT_UID_FROM_USER; 10695 INIT_GROUP_FROM_GID; 10696 INIT_GID_FROM_GROUP; 10697 INIT_ACCESS; 10698 INIT_FACCESSAT; 10699 INIT_GETGROUPLIST; 10700 INIT_GETGROUPMEMBERSHIP; 10701 INIT_READLINK; 10702 INIT_READLINKAT; 10703 INIT_NAME_TO_HANDLE_AT; 10704 INIT_OPEN_BY_HANDLE_AT; 10705 INIT_STRLCPY; 10706 INIT_DEVNAME; 10707 INIT_DEVNAME_R; 10708 INIT_FGETLN; 10709 INIT_STRMODE; 10710 INIT_TTYENT; 10711 INIT_PROTOENT; 10712 INIT_PROTOENT_R; 10713 INIT_NETENT; 10714 INIT_GETMNTINFO; 10715 INIT_MI_VECTOR_HASH; 10716 INIT_SETVBUF; 10717 INIT_GETVFSSTAT; 10718 INIT_REGEX; 10719 INIT_REGEXSUB; 10720 INIT_FTS; 10721 INIT_SYSCTL; 10722 INIT_ASYSCTL; 10723 INIT_SYSCTLGETMIBINFO; 10724 INIT_NL_LANGINFO; 10725 INIT_MODCTL; 10726 INIT_STRTONUM; 10727 INIT_FPARSELN; 10728 INIT_STATVFS1; 10729 INIT_STRTOI; 10730 INIT_CAPSICUM; 10731 INIT_SHA1; 10732 INIT_MD4; 10733 INIT_RMD160; 10734 INIT_MD5; 10735 INIT_FSEEK; 10736 INIT_MD2; 10737 INIT_SHA2; 10738 INIT_VIS; 10739 INIT_CDB; 10740 INIT_GETFSENT; 10741 INIT_ARC4RANDOM; 10742 INIT_POPEN; 10743 INIT_POPENVE; 10744 INIT_PCLOSE; 10745 INIT_FUNOPEN; 10746 INIT_FUNOPEN2; 10747 INIT_FDEVNAME; 10748 INIT_GETUSERSHELL; 10749 INIT_SL_INIT; 10750 INIT_GETRANDOM; 10751 INIT_CRYPT; 10752 INIT_CRYPT_R; 10753 INIT_GETENTROPY; 10754 INIT_QSORT; 10755 INIT_QSORT_R; 10756 INIT_BSEARCH; 10757 INIT_SIGALTSTACK; 10758 INIT_PROCCTL 10759 INIT_UNAME; 10760 INIT___XUNAME; 10761 10762 INIT___PRINTF_CHK; 10763} 10764