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