1//===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// Common function interceptors for tools like AddressSanitizer, 11// ThreadSanitizer, MemorySanitizer, etc. 12// 13// This file should be included into the tool's interceptor file, 14// which has to define its own macros: 15// COMMON_INTERCEPTOR_ENTER 16// COMMON_INTERCEPTOR_ENTER_NOIGNORE 17// COMMON_INTERCEPTOR_READ_RANGE 18// COMMON_INTERCEPTOR_WRITE_RANGE 19// COMMON_INTERCEPTOR_INITIALIZE_RANGE 20// COMMON_INTERCEPTOR_DIR_ACQUIRE 21// COMMON_INTERCEPTOR_FD_ACQUIRE 22// COMMON_INTERCEPTOR_FD_RELEASE 23// COMMON_INTERCEPTOR_FD_ACCESS 24// COMMON_INTERCEPTOR_SET_THREAD_NAME 25// COMMON_INTERCEPTOR_ON_DLOPEN 26// COMMON_INTERCEPTOR_ON_EXIT 27// COMMON_INTERCEPTOR_MUTEX_PRE_LOCK 28// COMMON_INTERCEPTOR_MUTEX_POST_LOCK 29// COMMON_INTERCEPTOR_MUTEX_UNLOCK 30// COMMON_INTERCEPTOR_MUTEX_REPAIR 31// COMMON_INTERCEPTOR_SET_PTHREAD_NAME 32// COMMON_INTERCEPTOR_HANDLE_RECVMSG 33// COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED 34// COMMON_INTERCEPTOR_MEMSET_IMPL 35// COMMON_INTERCEPTOR_MEMMOVE_IMPL 36// COMMON_INTERCEPTOR_MEMCPY_IMPL 37// COMMON_INTERCEPTOR_MMAP_IMPL 38// COMMON_INTERCEPTOR_COPY_STRING 39// COMMON_INTERCEPTOR_STRNDUP_IMPL 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 fts_children __fts_children60 83#define fts_close __fts_close60 84#define fts_open __fts_open60 85#define fts_read __fts_read60 86#define fts_set __fts_set60 87#define getitimer __getitimer50 88#define getmntinfo __getmntinfo13 89#define getpwent __getpwent50 90#define getpwnam __getpwnam50 91#define getpwnam_r __getpwnam_r50 92#define getpwuid __getpwuid50 93#define getpwuid_r __getpwuid_r50 94#define getutent __getutent50 95#define getutxent __getutxent50 96#define getutxid __getutxid50 97#define getutxline __getutxline50 98#define pututxline __pututxline50 99#define glob __glob30 100#define gmtime __gmtime50 101#define gmtime_r __gmtime_r50 102#define localtime __locatime50 103#define localtime_r __localtime_r50 104#define mktime __mktime50 105#define lstat __lstat50 106#define opendir __opendir30 107#define readdir __readdir30 108#define readdir_r __readdir_r30 109#define scandir __scandir30 110#define setitimer __setitimer50 111#define setlocale __setlocale50 112#define shmctl __shmctl50 113#define sigemptyset __sigemptyset14 114#define sigfillset __sigfillset14 115#define sigpending __sigpending14 116#define sigprocmask __sigprocmask14 117#define sigtimedwait __sigtimedwait50 118#define stat __stat50 119#define time __time50 120#define times __times13 121#define unvis __unvis50 122#define wait3 __wait350 123#define wait4 __wait450 124extern const unsigned short *_ctype_tab_; 125extern const short *_toupper_tab_; 126extern const short *_tolower_tab_; 127#endif 128 129// Platform-specific options. 130#if SANITIZER_MAC 131namespace __sanitizer { 132bool PlatformHasDifferentMemcpyAndMemmove(); 133} 134#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE \ 135 (__sanitizer::PlatformHasDifferentMemcpyAndMemmove()) 136#elif SANITIZER_WINDOWS64 137#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE false 138#else 139#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE true 140#endif // SANITIZER_MAC 141 142#ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE 143#define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {} 144#endif 145 146#ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM 147#define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {} 148#endif 149 150#ifndef COMMON_INTERCEPTOR_FD_ACCESS 151#define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {} 152#endif 153 154#ifndef COMMON_INTERCEPTOR_MUTEX_PRE_LOCK 155#define COMMON_INTERCEPTOR_MUTEX_PRE_LOCK(ctx, m) {} 156#endif 157 158#ifndef COMMON_INTERCEPTOR_MUTEX_POST_LOCK 159#define COMMON_INTERCEPTOR_MUTEX_POST_LOCK(ctx, m) {} 160#endif 161 162#ifndef COMMON_INTERCEPTOR_MUTEX_UNLOCK 163#define COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m) {} 164#endif 165 166#ifndef COMMON_INTERCEPTOR_MUTEX_REPAIR 167#define COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m) {} 168#endif 169 170#ifndef COMMON_INTERCEPTOR_MUTEX_INVALID 171#define COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m) {} 172#endif 173 174#ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG 175#define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg)) 176#endif 177 178#ifndef COMMON_INTERCEPTOR_FILE_OPEN 179#define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {} 180#endif 181 182#ifndef COMMON_INTERCEPTOR_FILE_CLOSE 183#define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {} 184#endif 185 186#ifndef COMMON_INTERCEPTOR_LIBRARY_LOADED 187#define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) {} 188#endif 189 190#ifndef COMMON_INTERCEPTOR_LIBRARY_UNLOADED 191#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED() {} 192#endif 193 194#ifndef COMMON_INTERCEPTOR_ENTER_NOIGNORE 195#define COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, ...) \ 196 COMMON_INTERCEPTOR_ENTER(ctx, __VA_ARGS__) 197#endif 198 199#ifndef COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED 200#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED (0) 201#endif 202 203#define COMMON_INTERCEPTOR_READ_STRING(ctx, s, n) \ 204 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s), \ 205 common_flags()->strict_string_checks ? (REAL(strlen)(s)) + 1 : (n) ) 206 207#ifndef COMMON_INTERCEPTOR_ON_DLOPEN 208#define COMMON_INTERCEPTOR_ON_DLOPEN(filename, flag) \ 209 CheckNoDeepBind(filename, flag); 210#endif 211 212#ifndef COMMON_INTERCEPTOR_GET_TLS_RANGE 213#define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) *begin = *end = 0; 214#endif 215 216#ifndef COMMON_INTERCEPTOR_ACQUIRE 217#define COMMON_INTERCEPTOR_ACQUIRE(ctx, u) {} 218#endif 219 220#ifndef COMMON_INTERCEPTOR_RELEASE 221#define COMMON_INTERCEPTOR_RELEASE(ctx, u) {} 222#endif 223 224#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_START 225#define COMMON_INTERCEPTOR_USER_CALLBACK_START() {} 226#endif 227 228#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_END 229#define COMMON_INTERCEPTOR_USER_CALLBACK_END() {} 230#endif 231 232#ifdef SANITIZER_NLDBL_VERSION 233#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \ 234 COMMON_INTERCEPT_FUNCTION_VER(fn, SANITIZER_NLDBL_VERSION) 235#else 236#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \ 237 COMMON_INTERCEPT_FUNCTION(fn) 238#endif 239 240#ifndef COMMON_INTERCEPTOR_MEMSET_IMPL 241#define COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, dst, v, size) \ 242 { \ 243 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) \ 244 return internal_memset(dst, v, size); \ 245 COMMON_INTERCEPTOR_ENTER(ctx, memset, dst, v, size); \ 246 if (common_flags()->intercept_intrin) \ 247 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size); \ 248 return REAL(memset)(dst, v, size); \ 249 } 250#endif 251 252#ifndef COMMON_INTERCEPTOR_MEMMOVE_IMPL 253#define COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size) \ 254 { \ 255 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) \ 256 return internal_memmove(dst, src, size); \ 257 COMMON_INTERCEPTOR_ENTER(ctx, memmove, dst, src, size); \ 258 if (common_flags()->intercept_intrin) { \ 259 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size); \ 260 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, size); \ 261 } \ 262 return REAL(memmove)(dst, src, size); \ 263 } 264#endif 265 266#ifndef COMMON_INTERCEPTOR_MEMCPY_IMPL 267#define COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, dst, src, size) \ 268 { \ 269 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) { \ 270 return internal_memmove(dst, src, size); \ 271 } \ 272 COMMON_INTERCEPTOR_ENTER(ctx, memcpy, dst, src, size); \ 273 if (common_flags()->intercept_intrin) { \ 274 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size); \ 275 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, size); \ 276 } \ 277 return REAL(memcpy)(dst, src, size); \ 278 } 279#endif 280 281#ifndef COMMON_INTERCEPTOR_MMAP_IMPL 282#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, \ 283 off) \ 284 { return REAL(mmap)(addr, sz, prot, flags, fd, off); } 285#endif 286 287#ifndef COMMON_INTERCEPTOR_COPY_STRING 288#define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) {} 289#endif 290 291#ifndef COMMON_INTERCEPTOR_STRNDUP_IMPL 292#define COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size) \ 293 COMMON_INTERCEPTOR_ENTER(ctx, strndup, s, size); \ 294 uptr copy_length = internal_strnlen(s, size); \ 295 char *new_mem = (char *)WRAP(malloc)(copy_length + 1); \ 296 if (common_flags()->intercept_strndup) { \ 297 COMMON_INTERCEPTOR_READ_STRING(ctx, s, Min(size, copy_length + 1)); \ 298 } \ 299 COMMON_INTERCEPTOR_COPY_STRING(ctx, new_mem, s, copy_length); \ 300 internal_memcpy(new_mem, s, copy_length); \ 301 new_mem[copy_length] = '\0'; \ 302 return new_mem; 303#endif 304 305struct FileMetadata { 306 // For open_memstream(). 307 char **addr; 308 SIZE_T *size; 309}; 310 311struct CommonInterceptorMetadata { 312 enum { 313 CIMT_INVALID = 0, 314 CIMT_FILE 315 } type; 316 union { 317 FileMetadata file; 318 }; 319}; 320 321typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap; 322 323static MetadataHashMap *interceptor_metadata_map; 324 325#if SI_POSIX 326UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr, 327 const FileMetadata &file) { 328 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr); 329 CHECK(h.created()); 330 h->type = CommonInterceptorMetadata::CIMT_FILE; 331 h->file = file; 332} 333 334UNUSED static const FileMetadata *GetInterceptorMetadata( 335 __sanitizer_FILE *addr) { 336 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, 337 /* remove */ false, 338 /* create */ false); 339 if (addr && h.exists()) { 340 CHECK(!h.created()); 341 CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE); 342 return &h->file; 343 } else { 344 return 0; 345 } 346} 347 348UNUSED static void DeleteInterceptorMetadata(void *addr) { 349 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true); 350 CHECK(h.exists()); 351} 352#endif // SI_POSIX 353 354#if SANITIZER_INTERCEPT_STRLEN 355INTERCEPTOR(SIZE_T, strlen, const char *s) { 356 // Sometimes strlen is called prior to InitializeCommonInterceptors, 357 // in which case the REAL(strlen) typically used in 358 // COMMON_INTERCEPTOR_ENTER will fail. We use internal_strlen here 359 // to handle that. 360 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 361 return internal_strlen(s); 362 void *ctx; 363 COMMON_INTERCEPTOR_ENTER(ctx, strlen, s); 364 SIZE_T result = REAL(strlen)(s); 365 if (common_flags()->intercept_strlen) 366 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, result + 1); 367 return result; 368} 369#define INIT_STRLEN COMMON_INTERCEPT_FUNCTION(strlen) 370#else 371#define INIT_STRLEN 372#endif 373 374#if SANITIZER_INTERCEPT_STRNLEN 375INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T maxlen) { 376 void *ctx; 377 COMMON_INTERCEPTOR_ENTER(ctx, strnlen, s, maxlen); 378 SIZE_T length = REAL(strnlen)(s, maxlen); 379 if (common_flags()->intercept_strlen) 380 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, Min(length + 1, maxlen)); 381 return length; 382} 383#define INIT_STRNLEN COMMON_INTERCEPT_FUNCTION(strnlen) 384#else 385#define INIT_STRNLEN 386#endif 387 388#if SANITIZER_INTERCEPT_STRNDUP 389INTERCEPTOR(char*, strndup, const char *s, uptr size) { 390 void *ctx; 391 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size); 392} 393#define INIT_STRNDUP COMMON_INTERCEPT_FUNCTION(strndup) 394#else 395#define INIT_STRNDUP 396#endif // SANITIZER_INTERCEPT_STRNDUP 397 398#if SANITIZER_INTERCEPT___STRNDUP 399INTERCEPTOR(char*, __strndup, const char *s, uptr size) { 400 void *ctx; 401 COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size); 402} 403#define INIT___STRNDUP COMMON_INTERCEPT_FUNCTION(__strndup) 404#else 405#define INIT___STRNDUP 406#endif // SANITIZER_INTERCEPT___STRNDUP 407 408#if SANITIZER_INTERCEPT_TEXTDOMAIN 409INTERCEPTOR(char*, textdomain, const char *domainname) { 410 void *ctx; 411 COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname); 412 if (domainname) COMMON_INTERCEPTOR_READ_STRING(ctx, domainname, 0); 413 char *domain = REAL(textdomain)(domainname); 414 if (domain) { 415 COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, REAL(strlen)(domain) + 1); 416 } 417 return domain; 418} 419#define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain) 420#else 421#define INIT_TEXTDOMAIN 422#endif 423 424#if SANITIZER_INTERCEPT_STRCMP 425static inline int CharCmpX(unsigned char c1, unsigned char c2) { 426 return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1; 427} 428 429DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, uptr called_pc, 430 const char *s1, const char *s2, int result) 431 432INTERCEPTOR(int, strcmp, const char *s1, const char *s2) { 433 void *ctx; 434 COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2); 435 unsigned char c1, c2; 436 uptr i; 437 for (i = 0;; i++) { 438 c1 = (unsigned char)s1[i]; 439 c2 = (unsigned char)s2[i]; 440 if (c1 != c2 || c1 == '\0') break; 441 } 442 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1); 443 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1); 444 int result = CharCmpX(c1, c2); 445 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, GET_CALLER_PC(), s1, 446 s2, result); 447 return result; 448} 449 450DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, uptr called_pc, 451 const char *s1, const char *s2, uptr n, 452 int result) 453 454INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr size) { 455 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 456 return internal_strncmp(s1, s2, size); 457 void *ctx; 458 COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size); 459 unsigned char c1 = 0, c2 = 0; 460 uptr i; 461 for (i = 0; i < size; i++) { 462 c1 = (unsigned char)s1[i]; 463 c2 = (unsigned char)s2[i]; 464 if (c1 != c2 || c1 == '\0') break; 465 } 466 uptr i1 = i; 467 uptr i2 = i; 468 if (common_flags()->strict_string_checks) { 469 for (; i1 < size && s1[i1]; i1++) {} 470 for (; i2 < size && s2[i2]; i2++) {} 471 } 472 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size)); 473 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size)); 474 int result = CharCmpX(c1, c2); 475 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, GET_CALLER_PC(), s1, 476 s2, size, result); 477 return result; 478} 479 480#define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp) 481#define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp) 482#else 483#define INIT_STRCMP 484#define INIT_STRNCMP 485#endif 486 487#if SANITIZER_INTERCEPT_STRCASECMP 488static inline int CharCaseCmp(unsigned char c1, unsigned char c2) { 489 int c1_low = ToLower(c1); 490 int c2_low = ToLower(c2); 491 return c1_low - c2_low; 492} 493 494DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, uptr called_pc, 495 const char *s1, const char *s2, int result) 496 497INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) { 498 void *ctx; 499 COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2); 500 unsigned char c1 = 0, c2 = 0; 501 uptr i; 502 for (i = 0;; i++) { 503 c1 = (unsigned char)s1[i]; 504 c2 = (unsigned char)s2[i]; 505 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; 506 } 507 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1); 508 COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1); 509 int result = CharCaseCmp(c1, c2); 510 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, GET_CALLER_PC(), 511 s1, s2, result); 512 return result; 513} 514 515DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, uptr called_pc, 516 const char *s1, const char *s2, uptr size, 517 int result) 518 519INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T size) { 520 void *ctx; 521 COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, size); 522 unsigned char c1 = 0, c2 = 0; 523 uptr i; 524 for (i = 0; i < size; i++) { 525 c1 = (unsigned char)s1[i]; 526 c2 = (unsigned char)s2[i]; 527 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; 528 } 529 uptr i1 = i; 530 uptr i2 = i; 531 if (common_flags()->strict_string_checks) { 532 for (; i1 < size && s1[i1]; i1++) {} 533 for (; i2 < size && s2[i2]; i2++) {} 534 } 535 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size)); 536 COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size)); 537 int result = CharCaseCmp(c1, c2); 538 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, GET_CALLER_PC(), 539 s1, s2, size, result); 540 return result; 541} 542 543#define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp) 544#define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp) 545#else 546#define INIT_STRCASECMP 547#define INIT_STRNCASECMP 548#endif 549 550#if SANITIZER_INTERCEPT_STRSTR || SANITIZER_INTERCEPT_STRCASESTR 551static inline void StrstrCheck(void *ctx, char *r, const char *s1, 552 const char *s2) { 553 uptr len1 = REAL(strlen)(s1); 554 uptr len2 = REAL(strlen)(s2); 555 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r ? r - s1 + len2 : len1 + 1); 556 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2 + 1); 557} 558#endif 559 560#if SANITIZER_INTERCEPT_STRSTR 561 562DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, uptr called_pc, 563 const char *s1, const char *s2, char *result) 564 565INTERCEPTOR(char*, strstr, const char *s1, const char *s2) { 566 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 567 return internal_strstr(s1, s2); 568 void *ctx; 569 COMMON_INTERCEPTOR_ENTER(ctx, strstr, s1, s2); 570 char *r = REAL(strstr)(s1, s2); 571 if (common_flags()->intercept_strstr) 572 StrstrCheck(ctx, r, s1, s2); 573 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, GET_CALLER_PC(), s1, 574 s2, r); 575 return r; 576} 577 578#define INIT_STRSTR COMMON_INTERCEPT_FUNCTION(strstr); 579#else 580#define INIT_STRSTR 581#endif 582 583#if SANITIZER_INTERCEPT_STRCASESTR 584 585DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, uptr called_pc, 586 const char *s1, const char *s2, char *result) 587 588INTERCEPTOR(char*, strcasestr, const char *s1, const char *s2) { 589 void *ctx; 590 COMMON_INTERCEPTOR_ENTER(ctx, strcasestr, s1, s2); 591 char *r = REAL(strcasestr)(s1, s2); 592 if (common_flags()->intercept_strstr) 593 StrstrCheck(ctx, r, s1, s2); 594 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, GET_CALLER_PC(), 595 s1, s2, r); 596 return r; 597} 598 599#define INIT_STRCASESTR COMMON_INTERCEPT_FUNCTION(strcasestr); 600#else 601#define INIT_STRCASESTR 602#endif 603 604#if SANITIZER_INTERCEPT_STRTOK 605 606INTERCEPTOR(char*, strtok, char *str, const char *delimiters) { 607 void *ctx; 608 COMMON_INTERCEPTOR_ENTER(ctx, strtok, str, delimiters); 609 if (!common_flags()->intercept_strtok) { 610 return REAL(strtok)(str, delimiters); 611 } 612 if (common_flags()->strict_string_checks) { 613 // If strict_string_checks is enabled, we check the whole first argument 614 // string on the first call (strtok saves this string in a static buffer 615 // for subsequent calls). We do not need to check strtok's result. 616 // As the delimiters can change, we check them every call. 617 if (str != nullptr) { 618 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, REAL(strlen)(str) + 1); 619 } 620 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 621 REAL(strlen)(delimiters) + 1); 622 return REAL(strtok)(str, delimiters); 623 } else { 624 // However, when strict_string_checks is disabled we cannot check the 625 // whole string on the first call. Instead, we check the result string 626 // which is guaranteed to be a NULL-terminated substring of the first 627 // argument. We also conservatively check one character of str and the 628 // delimiters. 629 if (str != nullptr) { 630 COMMON_INTERCEPTOR_READ_STRING(ctx, str, 1); 631 } 632 COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 1); 633 char *result = REAL(strtok)(str, delimiters); 634 if (result != nullptr) { 635 COMMON_INTERCEPTOR_READ_RANGE(ctx, result, REAL(strlen)(result) + 1); 636 } else if (str != nullptr) { 637 // No delimiter were found, it's safe to assume that the entire str was 638 // scanned. 639 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, REAL(strlen)(str) + 1); 640 } 641 return result; 642 } 643} 644 645#define INIT_STRTOK COMMON_INTERCEPT_FUNCTION(strtok) 646#else 647#define INIT_STRTOK 648#endif 649 650#if SANITIZER_INTERCEPT_MEMMEM 651DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, uptr called_pc, 652 const void *s1, SIZE_T len1, const void *s2, 653 SIZE_T len2, void *result) 654 655INTERCEPTOR(void*, memmem, const void *s1, SIZE_T len1, const void *s2, 656 SIZE_T len2) { 657 void *ctx; 658 COMMON_INTERCEPTOR_ENTER(ctx, memmem, s1, len1, s2, len2); 659 void *r = REAL(memmem)(s1, len1, s2, len2); 660 if (common_flags()->intercept_memmem) { 661 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, len1); 662 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2); 663 } 664 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, GET_CALLER_PC(), 665 s1, len1, s2, len2, r); 666 return r; 667} 668 669#define INIT_MEMMEM COMMON_INTERCEPT_FUNCTION(memmem); 670#else 671#define INIT_MEMMEM 672#endif // SANITIZER_INTERCEPT_MEMMEM 673 674#if SANITIZER_INTERCEPT_STRCHR 675INTERCEPTOR(char*, strchr, const char *s, int c) { 676 void *ctx; 677 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 678 return internal_strchr(s, c); 679 COMMON_INTERCEPTOR_ENTER(ctx, strchr, s, c); 680 char *result = REAL(strchr)(s, c); 681 if (common_flags()->intercept_strchr) { 682 // Keep strlen as macro argument, as macro may ignore it. 683 COMMON_INTERCEPTOR_READ_STRING(ctx, s, 684 (result ? result - s : REAL(strlen)(s)) + 1); 685 } 686 return result; 687} 688#define INIT_STRCHR COMMON_INTERCEPT_FUNCTION(strchr) 689#else 690#define INIT_STRCHR 691#endif 692 693#if SANITIZER_INTERCEPT_STRCHRNUL 694INTERCEPTOR(char*, strchrnul, const char *s, int c) { 695 void *ctx; 696 COMMON_INTERCEPTOR_ENTER(ctx, strchrnul, s, c); 697 char *result = REAL(strchrnul)(s, c); 698 uptr len = result - s + 1; 699 if (common_flags()->intercept_strchr) 700 COMMON_INTERCEPTOR_READ_STRING(ctx, s, len); 701 return result; 702} 703#define INIT_STRCHRNUL COMMON_INTERCEPT_FUNCTION(strchrnul) 704#else 705#define INIT_STRCHRNUL 706#endif 707 708#if SANITIZER_INTERCEPT_STRRCHR 709INTERCEPTOR(char*, strrchr, const char *s, int c) { 710 void *ctx; 711 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 712 return internal_strrchr(s, c); 713 COMMON_INTERCEPTOR_ENTER(ctx, strrchr, s, c); 714 if (common_flags()->intercept_strchr) 715 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1); 716 return REAL(strrchr)(s, c); 717} 718#define INIT_STRRCHR COMMON_INTERCEPT_FUNCTION(strrchr) 719#else 720#define INIT_STRRCHR 721#endif 722 723#if SANITIZER_INTERCEPT_STRSPN 724INTERCEPTOR(SIZE_T, strspn, const char *s1, const char *s2) { 725 void *ctx; 726 COMMON_INTERCEPTOR_ENTER(ctx, strspn, s1, s2); 727 SIZE_T r = REAL(strspn)(s1, s2); 728 if (common_flags()->intercept_strspn) { 729 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, REAL(strlen)(s2) + 1); 730 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1); 731 } 732 return r; 733} 734 735INTERCEPTOR(SIZE_T, strcspn, const char *s1, const char *s2) { 736 void *ctx; 737 COMMON_INTERCEPTOR_ENTER(ctx, strcspn, s1, s2); 738 SIZE_T r = REAL(strcspn)(s1, s2); 739 if (common_flags()->intercept_strspn) { 740 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, REAL(strlen)(s2) + 1); 741 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1); 742 } 743 return r; 744} 745 746#define INIT_STRSPN \ 747 COMMON_INTERCEPT_FUNCTION(strspn); \ 748 COMMON_INTERCEPT_FUNCTION(strcspn); 749#else 750#define INIT_STRSPN 751#endif 752 753#if SANITIZER_INTERCEPT_STRPBRK 754INTERCEPTOR(char *, strpbrk, const char *s1, const char *s2) { 755 void *ctx; 756 COMMON_INTERCEPTOR_ENTER(ctx, strpbrk, s1, s2); 757 char *r = REAL(strpbrk)(s1, s2); 758 if (common_flags()->intercept_strpbrk) { 759 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, REAL(strlen)(s2) + 1); 760 COMMON_INTERCEPTOR_READ_STRING(ctx, s1, 761 r ? r - s1 + 1 : REAL(strlen)(s1) + 1); 762 } 763 return r; 764} 765 766#define INIT_STRPBRK COMMON_INTERCEPT_FUNCTION(strpbrk); 767#else 768#define INIT_STRPBRK 769#endif 770 771#if SANITIZER_INTERCEPT_MEMSET 772INTERCEPTOR(void *, memset, void *dst, int v, uptr size) { 773 void *ctx; 774 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, dst, v, size); 775} 776 777#define INIT_MEMSET COMMON_INTERCEPT_FUNCTION(memset) 778#else 779#define INIT_MEMSET 780#endif 781 782#if SANITIZER_INTERCEPT_MEMMOVE 783INTERCEPTOR(void *, memmove, void *dst, const void *src, uptr size) { 784 void *ctx; 785 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size); 786} 787 788#define INIT_MEMMOVE COMMON_INTERCEPT_FUNCTION(memmove) 789#else 790#define INIT_MEMMOVE 791#endif 792 793#if SANITIZER_INTERCEPT_MEMCPY 794INTERCEPTOR(void *, memcpy, void *dst, const void *src, uptr size) { 795 // On OS X, calling internal_memcpy here will cause memory corruptions, 796 // because memcpy and memmove are actually aliases of the same 797 // implementation. We need to use internal_memmove here. 798 // N.B.: If we switch this to internal_ we'll have to use internal_memmove 799 // due to memcpy being an alias of memmove on OS X. 800 void *ctx; 801 if (PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE) { 802 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, dst, src, size); 803 } else { 804 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size); 805 } 806} 807 808#define INIT_MEMCPY \ 809 do { \ 810 if (PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE) { \ 811 COMMON_INTERCEPT_FUNCTION(memcpy); \ 812 } else { \ 813 ASSIGN_REAL(memcpy, memmove); \ 814 } \ 815 CHECK(REAL(memcpy)); \ 816 } while (false) 817 818#else 819#define INIT_MEMCPY 820#endif 821 822#if SANITIZER_INTERCEPT_MEMCMP 823 824DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, uptr called_pc, 825 const void *s1, const void *s2, uptr n, 826 int result) 827 828INTERCEPTOR(int, memcmp, const void *a1, const void *a2, uptr size) { 829 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 830 return internal_memcmp(a1, a2, size); 831 void *ctx; 832 COMMON_INTERCEPTOR_ENTER(ctx, memcmp, a1, a2, size); 833 if (common_flags()->intercept_memcmp) { 834 if (common_flags()->strict_memcmp) { 835 // Check the entire regions even if the first bytes of the buffers are 836 // different. 837 COMMON_INTERCEPTOR_READ_RANGE(ctx, a1, size); 838 COMMON_INTERCEPTOR_READ_RANGE(ctx, a2, size); 839 // Fallthrough to REAL(memcmp) below. 840 } else { 841 unsigned char c1 = 0, c2 = 0; 842 const unsigned char *s1 = (const unsigned char*)a1; 843 const unsigned char *s2 = (const unsigned char*)a2; 844 uptr i; 845 for (i = 0; i < size; i++) { 846 c1 = s1[i]; 847 c2 = s2[i]; 848 if (c1 != c2) break; 849 } 850 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size)); 851 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size)); 852 int r = CharCmpX(c1, c2); 853 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), 854 a1, a2, size, r); 855 return r; 856 } 857 } 858 int result = REAL(memcmp(a1, a2, size)); 859 CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), a1, 860 a2, size, result); 861 return result; 862} 863 864#define INIT_MEMCMP COMMON_INTERCEPT_FUNCTION(memcmp) 865#else 866#define INIT_MEMCMP 867#endif 868 869#if SANITIZER_INTERCEPT_MEMCHR 870INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) { 871 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 872 return internal_memchr(s, c, n); 873 void *ctx; 874 COMMON_INTERCEPTOR_ENTER(ctx, memchr, s, c, n); 875#if SANITIZER_WINDOWS 876 void *res; 877 if (REAL(memchr)) { 878 res = REAL(memchr)(s, c, n); 879 } else { 880 res = internal_memchr(s, c, n); 881 } 882#else 883 void *res = REAL(memchr)(s, c, n); 884#endif 885 uptr len = res ? (char *)res - (const char *)s + 1 : n; 886 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, len); 887 return res; 888} 889 890#define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr) 891#else 892#define INIT_MEMCHR 893#endif 894 895#if SANITIZER_INTERCEPT_MEMRCHR 896INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) { 897 void *ctx; 898 COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n); 899 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n); 900 return REAL(memrchr)(s, c, n); 901} 902 903#define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr) 904#else 905#define INIT_MEMRCHR 906#endif 907 908#if SANITIZER_INTERCEPT_FREXP 909INTERCEPTOR(double, frexp, double x, int *exp) { 910 void *ctx; 911 COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp); 912 // Assuming frexp() always writes to |exp|. 913 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); 914 double res = REAL(frexp)(x, exp); 915 return res; 916} 917 918#define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp); 919#else 920#define INIT_FREXP 921#endif // SANITIZER_INTERCEPT_FREXP 922 923#if SANITIZER_INTERCEPT_FREXPF_FREXPL 924INTERCEPTOR(float, frexpf, float x, int *exp) { 925 void *ctx; 926 COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp); 927 // FIXME: under ASan the call below may write to freed memory and corrupt 928 // its metadata. See 929 // https://github.com/google/sanitizers/issues/321. 930 float res = REAL(frexpf)(x, exp); 931 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); 932 return res; 933} 934 935INTERCEPTOR(long double, frexpl, long double x, int *exp) { 936 void *ctx; 937 COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp); 938 // FIXME: under ASan the call below may write to freed memory and corrupt 939 // its metadata. See 940 // https://github.com/google/sanitizers/issues/321. 941 long double res = REAL(frexpl)(x, exp); 942 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); 943 return res; 944} 945 946#define INIT_FREXPF_FREXPL \ 947 COMMON_INTERCEPT_FUNCTION(frexpf); \ 948 COMMON_INTERCEPT_FUNCTION_LDBL(frexpl) 949#else 950#define INIT_FREXPF_FREXPL 951#endif // SANITIZER_INTERCEPT_FREXPF_FREXPL 952 953#if SI_POSIX 954static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec, 955 SIZE_T iovlen, SIZE_T maxlen) { 956 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) { 957 SSIZE_T sz = Min(iovec[i].iov_len, maxlen); 958 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz); 959 maxlen -= sz; 960 } 961} 962 963static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec, 964 SIZE_T iovlen, SIZE_T maxlen) { 965 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen); 966 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) { 967 SSIZE_T sz = Min(iovec[i].iov_len, maxlen); 968 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz); 969 maxlen -= sz; 970 } 971} 972#endif 973 974#if SANITIZER_INTERCEPT_READ 975INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) { 976 void *ctx; 977 COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count); 978 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 979 // FIXME: under ASan the call below may write to freed memory and corrupt 980 // its metadata. See 981 // https://github.com/google/sanitizers/issues/321. 982 SSIZE_T res = REAL(read)(fd, ptr, count); 983 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); 984 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 985 return res; 986} 987#define INIT_READ COMMON_INTERCEPT_FUNCTION(read) 988#else 989#define INIT_READ 990#endif 991 992#if SANITIZER_INTERCEPT_FREAD 993INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) { 994 // libc file streams can call user-supplied functions, see fopencookie. 995 void *ctx; 996 COMMON_INTERCEPTOR_ENTER(ctx, fread, ptr, size, nmemb, file); 997 // FIXME: under ASan the call below may write to freed memory and corrupt 998 // its metadata. See 999 // https://github.com/google/sanitizers/issues/321. 1000 SIZE_T res = REAL(fread)(ptr, size, nmemb, file); 1001 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res * size); 1002 return res; 1003} 1004#define INIT_FREAD COMMON_INTERCEPT_FUNCTION(fread) 1005#else 1006#define INIT_FREAD 1007#endif 1008 1009#if SANITIZER_INTERCEPT_PREAD 1010INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) { 1011 void *ctx; 1012 COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset); 1013 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1014 // FIXME: under ASan the call below may write to freed memory and corrupt 1015 // its metadata. See 1016 // https://github.com/google/sanitizers/issues/321. 1017 SSIZE_T res = REAL(pread)(fd, ptr, count, offset); 1018 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); 1019 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1020 return res; 1021} 1022#define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread) 1023#else 1024#define INIT_PREAD 1025#endif 1026 1027#if SANITIZER_INTERCEPT_PREAD64 1028INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) { 1029 void *ctx; 1030 COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset); 1031 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1032 // FIXME: under ASan the call below may write to freed memory and corrupt 1033 // its metadata. See 1034 // https://github.com/google/sanitizers/issues/321. 1035 SSIZE_T res = REAL(pread64)(fd, ptr, count, offset); 1036 if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); 1037 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1038 return res; 1039} 1040#define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64) 1041#else 1042#define INIT_PREAD64 1043#endif 1044 1045#if SANITIZER_INTERCEPT_READV 1046INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov, 1047 int iovcnt) { 1048 void *ctx; 1049 COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt); 1050 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1051 SSIZE_T res = REAL(readv)(fd, iov, iovcnt); 1052 if (res > 0) write_iovec(ctx, iov, iovcnt, res); 1053 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1054 return res; 1055} 1056#define INIT_READV COMMON_INTERCEPT_FUNCTION(readv) 1057#else 1058#define INIT_READV 1059#endif 1060 1061#if SANITIZER_INTERCEPT_PREADV 1062INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt, 1063 OFF_T offset) { 1064 void *ctx; 1065 COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset); 1066 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1067 SSIZE_T res = REAL(preadv)(fd, iov, iovcnt, offset); 1068 if (res > 0) write_iovec(ctx, iov, iovcnt, res); 1069 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1070 return res; 1071} 1072#define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv) 1073#else 1074#define INIT_PREADV 1075#endif 1076 1077#if SANITIZER_INTERCEPT_PREADV64 1078INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt, 1079 OFF64_T offset) { 1080 void *ctx; 1081 COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset); 1082 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1083 SSIZE_T res = REAL(preadv64)(fd, iov, iovcnt, offset); 1084 if (res > 0) write_iovec(ctx, iov, iovcnt, res); 1085 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 1086 return res; 1087} 1088#define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64) 1089#else 1090#define INIT_PREADV64 1091#endif 1092 1093#if SANITIZER_INTERCEPT_WRITE 1094INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) { 1095 void *ctx; 1096 COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count); 1097 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1098 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1099 SSIZE_T res = REAL(write)(fd, ptr, count); 1100 // FIXME: this check should be _before_ the call to REAL(write), not after 1101 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); 1102 return res; 1103} 1104#define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write) 1105#else 1106#define INIT_WRITE 1107#endif 1108 1109#if SANITIZER_INTERCEPT_FWRITE 1110INTERCEPTOR(SIZE_T, fwrite, const void *p, uptr size, uptr nmemb, void *file) { 1111 // libc file streams can call user-supplied functions, see fopencookie. 1112 void *ctx; 1113 COMMON_INTERCEPTOR_ENTER(ctx, fwrite, p, size, nmemb, file); 1114 SIZE_T res = REAL(fwrite)(p, size, nmemb, file); 1115 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, p, res * size); 1116 return res; 1117} 1118#define INIT_FWRITE COMMON_INTERCEPT_FUNCTION(fwrite) 1119#else 1120#define INIT_FWRITE 1121#endif 1122 1123#if SANITIZER_INTERCEPT_PWRITE 1124INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) { 1125 void *ctx; 1126 COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset); 1127 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1128 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1129 SSIZE_T res = REAL(pwrite)(fd, ptr, count, offset); 1130 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); 1131 return res; 1132} 1133#define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite) 1134#else 1135#define INIT_PWRITE 1136#endif 1137 1138#if SANITIZER_INTERCEPT_PWRITE64 1139INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count, 1140 OFF64_T offset) { 1141 void *ctx; 1142 COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset); 1143 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1144 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1145 SSIZE_T res = REAL(pwrite64)(fd, ptr, count, offset); 1146 if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); 1147 return res; 1148} 1149#define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64) 1150#else 1151#define INIT_PWRITE64 1152#endif 1153 1154#if SANITIZER_INTERCEPT_WRITEV 1155INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov, 1156 int iovcnt) { 1157 void *ctx; 1158 COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt); 1159 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1160 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1161 SSIZE_T res = REAL(writev)(fd, iov, iovcnt); 1162 if (res > 0) read_iovec(ctx, iov, iovcnt, res); 1163 return res; 1164} 1165#define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev) 1166#else 1167#define INIT_WRITEV 1168#endif 1169 1170#if SANITIZER_INTERCEPT_PWRITEV 1171INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt, 1172 OFF_T offset) { 1173 void *ctx; 1174 COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset); 1175 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1176 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1177 SSIZE_T res = REAL(pwritev)(fd, iov, iovcnt, offset); 1178 if (res > 0) read_iovec(ctx, iov, iovcnt, res); 1179 return res; 1180} 1181#define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev) 1182#else 1183#define INIT_PWRITEV 1184#endif 1185 1186#if SANITIZER_INTERCEPT_PWRITEV64 1187INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt, 1188 OFF64_T offset) { 1189 void *ctx; 1190 COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset); 1191 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 1192 if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 1193 SSIZE_T res = REAL(pwritev64)(fd, iov, iovcnt, offset); 1194 if (res > 0) read_iovec(ctx, iov, iovcnt, res); 1195 return res; 1196} 1197#define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64) 1198#else 1199#define INIT_PWRITEV64 1200#endif 1201 1202#if SANITIZER_INTERCEPT_FGETS 1203INTERCEPTOR(char *, fgets, char *s, SIZE_T size, void *file) { 1204 // libc file streams can call user-supplied functions, see fopencookie. 1205 void *ctx; 1206 COMMON_INTERCEPTOR_ENTER(ctx, fgets, s, size, file); 1207 // FIXME: under ASan the call below may write to freed memory and corrupt 1208 // its metadata. See 1209 // https://github.com/google/sanitizers/issues/321. 1210 char *res = REAL(fgets)(s, size, file); 1211 if (res) 1212 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, REAL(strlen)(s) + 1); 1213 return res; 1214} 1215#define INIT_FGETS COMMON_INTERCEPT_FUNCTION(fgets) 1216#else 1217#define INIT_FGETS 1218#endif 1219 1220#if SANITIZER_INTERCEPT_FPUTS 1221INTERCEPTOR_WITH_SUFFIX(int, fputs, char *s, void *file) { 1222 // libc file streams can call user-supplied functions, see fopencookie. 1223 void *ctx; 1224 COMMON_INTERCEPTOR_ENTER(ctx, fputs, s, file); 1225 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1); 1226 return REAL(fputs)(s, file); 1227} 1228#define INIT_FPUTS COMMON_INTERCEPT_FUNCTION(fputs) 1229#else 1230#define INIT_FPUTS 1231#endif 1232 1233#if SANITIZER_INTERCEPT_PUTS 1234INTERCEPTOR(int, puts, char *s) { 1235 // libc file streams can call user-supplied functions, see fopencookie. 1236 void *ctx; 1237 COMMON_INTERCEPTOR_ENTER(ctx, puts, s); 1238 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1); 1239 return REAL(puts)(s); 1240} 1241#define INIT_PUTS COMMON_INTERCEPT_FUNCTION(puts) 1242#else 1243#define INIT_PUTS 1244#endif 1245 1246#if SANITIZER_INTERCEPT_PRCTL 1247INTERCEPTOR(int, prctl, int option, unsigned long arg2, 1248 unsigned long arg3, // NOLINT 1249 unsigned long arg4, unsigned long arg5) { // NOLINT 1250 void *ctx; 1251 COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5); 1252 static const int PR_SET_NAME = 15; 1253 int res = REAL(prctl(option, arg2, arg3, arg4, arg5)); 1254 if (option == PR_SET_NAME) { 1255 char buff[16]; 1256 internal_strncpy(buff, (char *)arg2, 15); 1257 buff[15] = 0; 1258 COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff); 1259 } 1260 return res; 1261} 1262#define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl) 1263#else 1264#define INIT_PRCTL 1265#endif // SANITIZER_INTERCEPT_PRCTL 1266 1267#if SANITIZER_INTERCEPT_TIME 1268INTERCEPTOR(unsigned long, time, unsigned long *t) { 1269 void *ctx; 1270 COMMON_INTERCEPTOR_ENTER(ctx, time, t); 1271 unsigned long local_t; 1272 unsigned long res = REAL(time)(&local_t); 1273 if (t && res != (unsigned long)-1) { 1274 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t)); 1275 *t = local_t; 1276 } 1277 return res; 1278} 1279#define INIT_TIME COMMON_INTERCEPT_FUNCTION(time); 1280#else 1281#define INIT_TIME 1282#endif // SANITIZER_INTERCEPT_TIME 1283 1284#if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS 1285static void unpoison_tm(void *ctx, __sanitizer_tm *tm) { 1286 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm)); 1287#if !SANITIZER_SOLARIS 1288 if (tm->tm_zone) { 1289 // Can not use COMMON_INTERCEPTOR_WRITE_RANGE here, because tm->tm_zone 1290 // can point to shared memory and tsan would report a data race. 1291 COMMON_INTERCEPTOR_INITIALIZE_RANGE(tm->tm_zone, 1292 REAL(strlen(tm->tm_zone)) + 1); 1293 } 1294#endif 1295} 1296INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) { 1297 void *ctx; 1298 COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep); 1299 __sanitizer_tm *res = REAL(localtime)(timep); 1300 if (res) { 1301 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1302 unpoison_tm(ctx, res); 1303 } 1304 return res; 1305} 1306INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) { 1307 void *ctx; 1308 COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result); 1309 __sanitizer_tm *res = REAL(localtime_r)(timep, result); 1310 if (res) { 1311 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1312 unpoison_tm(ctx, res); 1313 } 1314 return res; 1315} 1316INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) { 1317 void *ctx; 1318 COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep); 1319 __sanitizer_tm *res = REAL(gmtime)(timep); 1320 if (res) { 1321 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1322 unpoison_tm(ctx, res); 1323 } 1324 return res; 1325} 1326INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) { 1327 void *ctx; 1328 COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result); 1329 __sanitizer_tm *res = REAL(gmtime_r)(timep, result); 1330 if (res) { 1331 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1332 unpoison_tm(ctx, res); 1333 } 1334 return res; 1335} 1336INTERCEPTOR(char *, ctime, unsigned long *timep) { 1337 void *ctx; 1338 COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep); 1339 // FIXME: under ASan the call below may write to freed memory and corrupt 1340 // its metadata. See 1341 // https://github.com/google/sanitizers/issues/321. 1342 char *res = REAL(ctime)(timep); 1343 if (res) { 1344 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1345 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 1346 } 1347 return res; 1348} 1349INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) { 1350 void *ctx; 1351 COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result); 1352 // FIXME: under ASan the call below may write to freed memory and corrupt 1353 // its metadata. See 1354 // https://github.com/google/sanitizers/issues/321. 1355 char *res = REAL(ctime_r)(timep, result); 1356 if (res) { 1357 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); 1358 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 1359 } 1360 return res; 1361} 1362INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) { 1363 void *ctx; 1364 COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm); 1365 // FIXME: under ASan the call below may write to freed memory and corrupt 1366 // its metadata. See 1367 // https://github.com/google/sanitizers/issues/321. 1368 char *res = REAL(asctime)(tm); 1369 if (res) { 1370 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm)); 1371 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 1372 } 1373 return res; 1374} 1375INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) { 1376 void *ctx; 1377 COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result); 1378 // FIXME: under ASan the call below may write to freed memory and corrupt 1379 // its metadata. See 1380 // https://github.com/google/sanitizers/issues/321. 1381 char *res = REAL(asctime_r)(tm, result); 1382 if (res) { 1383 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm)); 1384 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 1385 } 1386 return res; 1387} 1388INTERCEPTOR(long, mktime, __sanitizer_tm *tm) { 1389 void *ctx; 1390 COMMON_INTERCEPTOR_ENTER(ctx, mktime, tm); 1391 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_sec, sizeof(tm->tm_sec)); 1392 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_min, sizeof(tm->tm_min)); 1393 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_hour, sizeof(tm->tm_hour)); 1394 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mday, sizeof(tm->tm_mday)); 1395 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mon, sizeof(tm->tm_mon)); 1396 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_year, sizeof(tm->tm_year)); 1397 COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_isdst, sizeof(tm->tm_isdst)); 1398 long res = REAL(mktime)(tm); 1399 if (res != -1) unpoison_tm(ctx, tm); 1400 return res; 1401} 1402#define INIT_LOCALTIME_AND_FRIENDS \ 1403 COMMON_INTERCEPT_FUNCTION(localtime); \ 1404 COMMON_INTERCEPT_FUNCTION(localtime_r); \ 1405 COMMON_INTERCEPT_FUNCTION(gmtime); \ 1406 COMMON_INTERCEPT_FUNCTION(gmtime_r); \ 1407 COMMON_INTERCEPT_FUNCTION(ctime); \ 1408 COMMON_INTERCEPT_FUNCTION(ctime_r); \ 1409 COMMON_INTERCEPT_FUNCTION(asctime); \ 1410 COMMON_INTERCEPT_FUNCTION(asctime_r); \ 1411 COMMON_INTERCEPT_FUNCTION(mktime); 1412#else 1413#define INIT_LOCALTIME_AND_FRIENDS 1414#endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS 1415 1416#if SANITIZER_INTERCEPT_STRPTIME 1417INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) { 1418 void *ctx; 1419 COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm); 1420 if (format) 1421 COMMON_INTERCEPTOR_READ_RANGE(ctx, format, REAL(strlen)(format) + 1); 1422 // FIXME: under ASan the call below may write to freed memory and corrupt 1423 // its metadata. See 1424 // https://github.com/google/sanitizers/issues/321. 1425 char *res = REAL(strptime)(s, format, tm); 1426 COMMON_INTERCEPTOR_READ_STRING(ctx, s, res ? res - s : 0); 1427 if (res && tm) { 1428 // Do not call unpoison_tm here, because strptime does not, in fact, 1429 // initialize the entire struct tm. For example, tm_zone pointer is left 1430 // uninitialized. 1431 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm)); 1432 } 1433 return res; 1434} 1435#define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime); 1436#else 1437#define INIT_STRPTIME 1438#endif 1439 1440#if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF 1441#include "sanitizer_common_interceptors_format.inc" 1442 1443#define FORMAT_INTERCEPTOR_IMPL(name, vname, ...) \ 1444 { \ 1445 void *ctx; \ 1446 va_list ap; \ 1447 va_start(ap, format); \ 1448 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \ 1449 int res = WRAP(vname)(__VA_ARGS__, ap); \ 1450 va_end(ap); \ 1451 return res; \ 1452 } 1453 1454#endif 1455 1456#if SANITIZER_INTERCEPT_SCANF 1457 1458#define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \ 1459 { \ 1460 void *ctx; \ 1461 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \ 1462 va_list aq; \ 1463 va_copy(aq, ap); \ 1464 int res = REAL(vname)(__VA_ARGS__); \ 1465 if (res > 0) \ 1466 scanf_common(ctx, res, allowGnuMalloc, format, aq); \ 1467 va_end(aq); \ 1468 return res; \ 1469 } 1470 1471INTERCEPTOR(int, vscanf, const char *format, va_list ap) 1472VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap) 1473 1474INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap) 1475VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap) 1476 1477INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap) 1478VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap) 1479 1480#if SANITIZER_INTERCEPT_ISOC99_SCANF 1481INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap) 1482VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap) 1483 1484INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format, 1485 va_list ap) 1486VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap) 1487 1488INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap) 1489VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap) 1490#endif // SANITIZER_INTERCEPT_ISOC99_SCANF 1491 1492INTERCEPTOR(int, scanf, const char *format, ...) 1493FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format) 1494 1495INTERCEPTOR(int, fscanf, void *stream, const char *format, ...) 1496FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format) 1497 1498INTERCEPTOR(int, sscanf, const char *str, const char *format, ...) 1499FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format) 1500 1501#if SANITIZER_INTERCEPT_ISOC99_SCANF 1502INTERCEPTOR(int, __isoc99_scanf, const char *format, ...) 1503FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format) 1504 1505INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...) 1506FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format) 1507 1508INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...) 1509FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format) 1510#endif 1511 1512#endif 1513 1514#if SANITIZER_INTERCEPT_SCANF 1515#define INIT_SCANF \ 1516 COMMON_INTERCEPT_FUNCTION_LDBL(scanf); \ 1517 COMMON_INTERCEPT_FUNCTION_LDBL(sscanf); \ 1518 COMMON_INTERCEPT_FUNCTION_LDBL(fscanf); \ 1519 COMMON_INTERCEPT_FUNCTION_LDBL(vscanf); \ 1520 COMMON_INTERCEPT_FUNCTION_LDBL(vsscanf); \ 1521 COMMON_INTERCEPT_FUNCTION_LDBL(vfscanf); 1522#else 1523#define INIT_SCANF 1524#endif 1525 1526#if SANITIZER_INTERCEPT_ISOC99_SCANF 1527#define INIT_ISOC99_SCANF \ 1528 COMMON_INTERCEPT_FUNCTION(__isoc99_scanf); \ 1529 COMMON_INTERCEPT_FUNCTION(__isoc99_sscanf); \ 1530 COMMON_INTERCEPT_FUNCTION(__isoc99_fscanf); \ 1531 COMMON_INTERCEPT_FUNCTION(__isoc99_vscanf); \ 1532 COMMON_INTERCEPT_FUNCTION(__isoc99_vsscanf); \ 1533 COMMON_INTERCEPT_FUNCTION(__isoc99_vfscanf); 1534#else 1535#define INIT_ISOC99_SCANF 1536#endif 1537 1538#if SANITIZER_INTERCEPT_PRINTF 1539 1540#define VPRINTF_INTERCEPTOR_ENTER(vname, ...) \ 1541 void *ctx; \ 1542 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \ 1543 va_list aq; \ 1544 va_copy(aq, ap); 1545 1546#define VPRINTF_INTERCEPTOR_RETURN() \ 1547 va_end(aq); 1548 1549#define VPRINTF_INTERCEPTOR_IMPL(vname, ...) \ 1550 { \ 1551 VPRINTF_INTERCEPTOR_ENTER(vname, __VA_ARGS__); \ 1552 if (common_flags()->check_printf) \ 1553 printf_common(ctx, format, aq); \ 1554 int res = REAL(vname)(__VA_ARGS__); \ 1555 VPRINTF_INTERCEPTOR_RETURN(); \ 1556 return res; \ 1557 } 1558 1559// FIXME: under ASan the REAL() call below may write to freed memory and 1560// corrupt its metadata. See 1561// https://github.com/google/sanitizers/issues/321. 1562#define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...) \ 1563 { \ 1564 VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__) \ 1565 if (common_flags()->check_printf) { \ 1566 printf_common(ctx, format, aq); \ 1567 } \ 1568 int res = REAL(vname)(str, __VA_ARGS__); \ 1569 if (res >= 0) { \ 1570 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1); \ 1571 } \ 1572 VPRINTF_INTERCEPTOR_RETURN(); \ 1573 return res; \ 1574 } 1575 1576// FIXME: under ASan the REAL() call below may write to freed memory and 1577// corrupt its metadata. See 1578// https://github.com/google/sanitizers/issues/321. 1579#define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...) \ 1580 { \ 1581 VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__) \ 1582 if (common_flags()->check_printf) { \ 1583 printf_common(ctx, format, aq); \ 1584 } \ 1585 int res = REAL(vname)(str, size, __VA_ARGS__); \ 1586 if (res >= 0) { \ 1587 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1))); \ 1588 } \ 1589 VPRINTF_INTERCEPTOR_RETURN(); \ 1590 return res; \ 1591 } 1592 1593// FIXME: under ASan the REAL() call below may write to freed memory and 1594// corrupt its metadata. See 1595// https://github.com/google/sanitizers/issues/321. 1596#define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...) \ 1597 { \ 1598 VPRINTF_INTERCEPTOR_ENTER(vname, strp, __VA_ARGS__) \ 1599 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, strp, sizeof(char *)); \ 1600 if (common_flags()->check_printf) { \ 1601 printf_common(ctx, format, aq); \ 1602 } \ 1603 int res = REAL(vname)(strp, __VA_ARGS__); \ 1604 if (res >= 0) { \ 1605 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1); \ 1606 } \ 1607 VPRINTF_INTERCEPTOR_RETURN(); \ 1608 return res; \ 1609 } 1610 1611INTERCEPTOR(int, vprintf, const char *format, va_list ap) 1612VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap) 1613 1614INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format, 1615 va_list ap) 1616VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap) 1617 1618INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format, 1619 va_list ap) 1620VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap) 1621 1622#if SANITIZER_INTERCEPT___PRINTF_CHK 1623INTERCEPTOR(int, __vsnprintf_chk, char *str, SIZE_T size, int flag, 1624 SIZE_T size_to, const char *format, va_list ap) 1625VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap) 1626#endif 1627 1628#if SANITIZER_INTERCEPT_PRINTF_L 1629INTERCEPTOR(int, vsnprintf_l, char *str, SIZE_T size, void *loc, 1630 const char *format, va_list ap) 1631VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf_l, str, size, loc, format, ap) 1632 1633INTERCEPTOR(int, snprintf_l, char *str, SIZE_T size, void *loc, 1634 const char *format, ...) 1635FORMAT_INTERCEPTOR_IMPL(snprintf_l, vsnprintf_l, str, size, loc, format) 1636#endif // SANITIZER_INTERCEPT_PRINTF_L 1637 1638INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap) 1639VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap) 1640 1641#if SANITIZER_INTERCEPT___PRINTF_CHK 1642INTERCEPTOR(int, __vsprintf_chk, char *str, int flag, SIZE_T size_to, 1643 const char *format, va_list ap) 1644VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap) 1645#endif 1646 1647INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap) 1648VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap) 1649 1650#if SANITIZER_INTERCEPT_ISOC99_PRINTF 1651INTERCEPTOR(int, __isoc99_vprintf, const char *format, va_list ap) 1652VPRINTF_INTERCEPTOR_IMPL(__isoc99_vprintf, format, ap) 1653 1654INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream, 1655 const char *format, va_list ap) 1656VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap) 1657 1658INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format, 1659 va_list ap) 1660VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap) 1661 1662INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format, 1663 va_list ap) 1664VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format, 1665 ap) 1666 1667#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF 1668 1669INTERCEPTOR(int, printf, const char *format, ...) 1670FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format) 1671 1672INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...) 1673FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format) 1674 1675#if SANITIZER_INTERCEPT___PRINTF_CHK 1676INTERCEPTOR(int, __fprintf_chk, __sanitizer_FILE *stream, SIZE_T size, 1677 const char *format, ...) 1678FORMAT_INTERCEPTOR_IMPL(__fprintf_chk, vfprintf, stream, format) 1679#endif 1680 1681INTERCEPTOR(int, sprintf, char *str, const char *format, ...) // NOLINT 1682FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format) // NOLINT 1683 1684#if SANITIZER_INTERCEPT___PRINTF_CHK 1685INTERCEPTOR(int, __sprintf_chk, char *str, int flag, SIZE_T size_to, 1686 const char *format, ...) // NOLINT 1687FORMAT_INTERCEPTOR_IMPL(__sprintf_chk, vsprintf, str, format) // NOLINT 1688#endif 1689 1690INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...) 1691FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format) 1692 1693#if SANITIZER_INTERCEPT___PRINTF_CHK 1694INTERCEPTOR(int, __snprintf_chk, char *str, SIZE_T size, int flag, 1695 SIZE_T size_to, const char *format, ...) // NOLINT 1696FORMAT_INTERCEPTOR_IMPL(__snprintf_chk, vsnprintf, str, size, format) // NOLINT 1697#endif 1698 1699INTERCEPTOR(int, asprintf, char **strp, const char *format, ...) 1700FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format) 1701 1702#if SANITIZER_INTERCEPT_ISOC99_PRINTF 1703INTERCEPTOR(int, __isoc99_printf, const char *format, ...) 1704FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format) 1705 1706INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format, 1707 ...) 1708FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format) 1709 1710INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...) 1711FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format) 1712 1713INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size, 1714 const char *format, ...) 1715FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size, 1716 format) 1717 1718#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF 1719 1720#endif // SANITIZER_INTERCEPT_PRINTF 1721 1722#if SANITIZER_INTERCEPT_PRINTF 1723#define INIT_PRINTF \ 1724 COMMON_INTERCEPT_FUNCTION_LDBL(printf); \ 1725 COMMON_INTERCEPT_FUNCTION_LDBL(sprintf); \ 1726 COMMON_INTERCEPT_FUNCTION_LDBL(snprintf); \ 1727 COMMON_INTERCEPT_FUNCTION_LDBL(asprintf); \ 1728 COMMON_INTERCEPT_FUNCTION_LDBL(fprintf); \ 1729 COMMON_INTERCEPT_FUNCTION_LDBL(vprintf); \ 1730 COMMON_INTERCEPT_FUNCTION_LDBL(vsprintf); \ 1731 COMMON_INTERCEPT_FUNCTION_LDBL(vsnprintf); \ 1732 COMMON_INTERCEPT_FUNCTION_LDBL(vasprintf); \ 1733 COMMON_INTERCEPT_FUNCTION_LDBL(vfprintf); 1734#else 1735#define INIT_PRINTF 1736#endif 1737 1738#if SANITIZER_INTERCEPT___PRINTF_CHK 1739#define INIT___PRINTF_CHK \ 1740 COMMON_INTERCEPT_FUNCTION(__sprintf_chk); \ 1741 COMMON_INTERCEPT_FUNCTION(__snprintf_chk); \ 1742 COMMON_INTERCEPT_FUNCTION(__vsprintf_chk); \ 1743 COMMON_INTERCEPT_FUNCTION(__vsnprintf_chk); \ 1744 COMMON_INTERCEPT_FUNCTION(__fprintf_chk); 1745#else 1746#define INIT___PRINTF_CHK 1747#endif 1748 1749#if SANITIZER_INTERCEPT_PRINTF_L 1750#define INIT_PRINTF_L \ 1751 COMMON_INTERCEPT_FUNCTION(snprintf_l); \ 1752 COMMON_INTERCEPT_FUNCTION(vsnprintf_l); 1753#else 1754#define INIT_PRINTF_L 1755#endif 1756 1757#if SANITIZER_INTERCEPT_ISOC99_PRINTF 1758#define INIT_ISOC99_PRINTF \ 1759 COMMON_INTERCEPT_FUNCTION(__isoc99_printf); \ 1760 COMMON_INTERCEPT_FUNCTION(__isoc99_sprintf); \ 1761 COMMON_INTERCEPT_FUNCTION(__isoc99_snprintf); \ 1762 COMMON_INTERCEPT_FUNCTION(__isoc99_fprintf); \ 1763 COMMON_INTERCEPT_FUNCTION(__isoc99_vprintf); \ 1764 COMMON_INTERCEPT_FUNCTION(__isoc99_vsprintf); \ 1765 COMMON_INTERCEPT_FUNCTION(__isoc99_vsnprintf); \ 1766 COMMON_INTERCEPT_FUNCTION(__isoc99_vfprintf); 1767#else 1768#define INIT_ISOC99_PRINTF 1769#endif 1770 1771#if SANITIZER_INTERCEPT_IOCTL 1772#include "sanitizer_common_interceptors_ioctl.inc" 1773#include "sanitizer_interceptors_ioctl_netbsd.inc" 1774INTERCEPTOR(int, ioctl, int d, unsigned long request, ...) { 1775 // We need a frame pointer, because we call into ioctl_common_[pre|post] which 1776 // can trigger a report and we need to be able to unwind through this 1777 // function. On Mac in debug mode we might not have a frame pointer, because 1778 // ioctl_common_[pre|post] doesn't get inlined here. 1779 ENABLE_FRAME_POINTER; 1780 1781 void *ctx; 1782 va_list ap; 1783 va_start(ap, request); 1784 void *arg = va_arg(ap, void *); 1785 va_end(ap); 1786 COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg); 1787 1788 CHECK(ioctl_initialized); 1789 1790 // Note: TSan does not use common flags, and they are zero-initialized. 1791 // This effectively disables ioctl handling in TSan. 1792 if (!common_flags()->handle_ioctl) return REAL(ioctl)(d, request, arg); 1793 1794 // Although request is unsigned long, the rest of the interceptor uses it 1795 // as just "unsigned" to save space, because we know that all values fit in 1796 // "unsigned" - they are compile-time constants. 1797 1798 const ioctl_desc *desc = ioctl_lookup(request); 1799 ioctl_desc decoded_desc; 1800 if (!desc) { 1801 VPrintf(2, "Decoding unknown ioctl 0x%x\n", request); 1802 if (!ioctl_decode(request, &decoded_desc)) 1803 Printf("WARNING: failed decoding unknown ioctl 0x%x\n", request); 1804 else 1805 desc = &decoded_desc; 1806 } 1807 1808 if (desc) ioctl_common_pre(ctx, desc, d, request, arg); 1809 int res = REAL(ioctl)(d, request, arg); 1810 // FIXME: some ioctls have different return values for success and failure. 1811 if (desc && res != -1) ioctl_common_post(ctx, desc, res, d, request, arg); 1812 return res; 1813} 1814#define INIT_IOCTL \ 1815 ioctl_init(); \ 1816 COMMON_INTERCEPT_FUNCTION(ioctl); 1817#else 1818#define INIT_IOCTL 1819#endif 1820 1821#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS || \ 1822 SANITIZER_INTERCEPT_GETPWENT || SANITIZER_INTERCEPT_FGETPWENT || \ 1823 SANITIZER_INTERCEPT_GETPWENT_R || \ 1824 SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS || \ 1825 SANITIZER_INTERCEPT_FGETPWENT_R || \ 1826 SANITIZER_INTERCEPT_FGETGRENT_R 1827static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) { 1828 if (pwd) { 1829 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd)); 1830 if (pwd->pw_name) 1831 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_name, 1832 REAL(strlen)(pwd->pw_name) + 1); 1833 if (pwd->pw_passwd) 1834 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_passwd, 1835 REAL(strlen)(pwd->pw_passwd) + 1); 1836#if !SANITIZER_ANDROID 1837 if (pwd->pw_gecos) 1838 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_gecos, 1839 REAL(strlen)(pwd->pw_gecos) + 1); 1840#endif 1841#if SANITIZER_MAC 1842 if (pwd->pw_class) 1843 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_class, 1844 REAL(strlen)(pwd->pw_class) + 1); 1845#endif 1846 if (pwd->pw_dir) 1847 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_dir, 1848 REAL(strlen)(pwd->pw_dir) + 1); 1849 if (pwd->pw_shell) 1850 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_shell, 1851 REAL(strlen)(pwd->pw_shell) + 1); 1852 } 1853} 1854 1855static void unpoison_group(void *ctx, __sanitizer_group *grp) { 1856 if (grp) { 1857 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp)); 1858 if (grp->gr_name) 1859 COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_name, 1860 REAL(strlen)(grp->gr_name) + 1); 1861 if (grp->gr_passwd) 1862 COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_passwd, 1863 REAL(strlen)(grp->gr_passwd) + 1); 1864 char **p = grp->gr_mem; 1865 for (; *p; ++p) { 1866 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*p, REAL(strlen)(*p) + 1); 1867 } 1868 COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_mem, 1869 (p - grp->gr_mem + 1) * sizeof(*p)); 1870 } 1871} 1872#endif // SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS || 1873 // SANITIZER_INTERCEPT_GETPWENT || SANITIZER_INTERCEPT_FGETPWENT || 1874 // SANITIZER_INTERCEPT_GETPWENT_R || 1875 // SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS 1876 1877#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS 1878INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) { 1879 void *ctx; 1880 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name); 1881 if (name) 1882 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 1883 __sanitizer_passwd *res = REAL(getpwnam)(name); 1884 if (res) unpoison_passwd(ctx, res); 1885 return res; 1886} 1887INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) { 1888 void *ctx; 1889 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid); 1890 __sanitizer_passwd *res = REAL(getpwuid)(uid); 1891 if (res) unpoison_passwd(ctx, res); 1892 return res; 1893} 1894INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) { 1895 void *ctx; 1896 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name); 1897 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 1898 __sanitizer_group *res = REAL(getgrnam)(name); 1899 if (res) unpoison_group(ctx, res); 1900 return res; 1901} 1902INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) { 1903 void *ctx; 1904 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid); 1905 __sanitizer_group *res = REAL(getgrgid)(gid); 1906 if (res) unpoison_group(ctx, res); 1907 return res; 1908} 1909#define INIT_GETPWNAM_AND_FRIENDS \ 1910 COMMON_INTERCEPT_FUNCTION(getpwnam); \ 1911 COMMON_INTERCEPT_FUNCTION(getpwuid); \ 1912 COMMON_INTERCEPT_FUNCTION(getgrnam); \ 1913 COMMON_INTERCEPT_FUNCTION(getgrgid); 1914#else 1915#define INIT_GETPWNAM_AND_FRIENDS 1916#endif 1917 1918#if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS 1919INTERCEPTOR(int, getpwnam_r, const char *name, __sanitizer_passwd *pwd, 1920 char *buf, SIZE_T buflen, __sanitizer_passwd **result) { 1921 void *ctx; 1922 COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result); 1923 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 1924 // FIXME: under ASan the call below may write to freed memory and corrupt 1925 // its metadata. See 1926 // https://github.com/google/sanitizers/issues/321. 1927 int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result); 1928 if (!res) { 1929 if (result && *result) unpoison_passwd(ctx, *result); 1930 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 1931 } 1932 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 1933 return res; 1934} 1935INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf, 1936 SIZE_T buflen, __sanitizer_passwd **result) { 1937 void *ctx; 1938 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result); 1939 // FIXME: under ASan the call below may write to freed memory and corrupt 1940 // its metadata. See 1941 // https://github.com/google/sanitizers/issues/321. 1942 int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result); 1943 if (!res) { 1944 if (result && *result) unpoison_passwd(ctx, *result); 1945 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 1946 } 1947 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 1948 return res; 1949} 1950INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp, 1951 char *buf, SIZE_T buflen, __sanitizer_group **result) { 1952 void *ctx; 1953 COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result); 1954 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 1955 // FIXME: under ASan the call below may write to freed memory and corrupt 1956 // its metadata. See 1957 // https://github.com/google/sanitizers/issues/321. 1958 int res = REAL(getgrnam_r)(name, grp, buf, buflen, result); 1959 if (!res) { 1960 if (result && *result) unpoison_group(ctx, *result); 1961 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 1962 } 1963 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 1964 return res; 1965} 1966INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf, 1967 SIZE_T buflen, __sanitizer_group **result) { 1968 void *ctx; 1969 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result); 1970 // FIXME: under ASan the call below may write to freed memory and corrupt 1971 // its metadata. See 1972 // https://github.com/google/sanitizers/issues/321. 1973 int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result); 1974 if (!res) { 1975 if (result && *result) unpoison_group(ctx, *result); 1976 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 1977 } 1978 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 1979 return res; 1980} 1981#define INIT_GETPWNAM_R_AND_FRIENDS \ 1982 COMMON_INTERCEPT_FUNCTION(getpwnam_r); \ 1983 COMMON_INTERCEPT_FUNCTION(getpwuid_r); \ 1984 COMMON_INTERCEPT_FUNCTION(getgrnam_r); \ 1985 COMMON_INTERCEPT_FUNCTION(getgrgid_r); 1986#else 1987#define INIT_GETPWNAM_R_AND_FRIENDS 1988#endif 1989 1990#if SANITIZER_INTERCEPT_GETPWENT 1991INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) { 1992 void *ctx; 1993 COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy); 1994 __sanitizer_passwd *res = REAL(getpwent)(dummy); 1995 if (res) unpoison_passwd(ctx, res); 1996 return res; 1997} 1998INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) { 1999 void *ctx; 2000 COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy); 2001 __sanitizer_group *res = REAL(getgrent)(dummy); 2002 if (res) unpoison_group(ctx, res);; 2003 return res; 2004} 2005#define INIT_GETPWENT \ 2006 COMMON_INTERCEPT_FUNCTION(getpwent); \ 2007 COMMON_INTERCEPT_FUNCTION(getgrent); 2008#else 2009#define INIT_GETPWENT 2010#endif 2011 2012#if SANITIZER_INTERCEPT_FGETPWENT 2013INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) { 2014 void *ctx; 2015 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp); 2016 __sanitizer_passwd *res = REAL(fgetpwent)(fp); 2017 if (res) unpoison_passwd(ctx, res); 2018 return res; 2019} 2020INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) { 2021 void *ctx; 2022 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp); 2023 __sanitizer_group *res = REAL(fgetgrent)(fp); 2024 if (res) unpoison_group(ctx, res); 2025 return res; 2026} 2027#define INIT_FGETPWENT \ 2028 COMMON_INTERCEPT_FUNCTION(fgetpwent); \ 2029 COMMON_INTERCEPT_FUNCTION(fgetgrent); 2030#else 2031#define INIT_FGETPWENT 2032#endif 2033 2034#if SANITIZER_INTERCEPT_GETPWENT_R 2035INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf, 2036 SIZE_T buflen, __sanitizer_passwd **pwbufp) { 2037 void *ctx; 2038 COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp); 2039 // FIXME: under ASan the call below may write to freed memory and corrupt 2040 // its metadata. See 2041 // https://github.com/google/sanitizers/issues/321. 2042 int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp); 2043 if (!res) { 2044 if (pwbufp && *pwbufp) unpoison_passwd(ctx, *pwbufp); 2045 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 2046 } 2047 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2048 return res; 2049} 2050INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen, 2051 __sanitizer_group **pwbufp) { 2052 void *ctx; 2053 COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp); 2054 // FIXME: under ASan the call below may write to freed memory and corrupt 2055 // its metadata. See 2056 // https://github.com/google/sanitizers/issues/321. 2057 int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp); 2058 if (!res) { 2059 if (pwbufp && *pwbufp) unpoison_group(ctx, *pwbufp); 2060 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 2061 } 2062 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2063 return res; 2064} 2065#define INIT_GETPWENT_R \ 2066 COMMON_INTERCEPT_FUNCTION(getpwent_r); \ 2067 COMMON_INTERCEPT_FUNCTION(getgrent_r); 2068#else 2069#define INIT_GETPWENT_R 2070#endif 2071 2072#if SANITIZER_INTERCEPT_FGETPWENT_R 2073INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf, 2074 SIZE_T buflen, __sanitizer_passwd **pwbufp) { 2075 void *ctx; 2076 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp); 2077 // FIXME: under ASan the call below may write to freed memory and corrupt 2078 // its metadata. See 2079 // https://github.com/google/sanitizers/issues/321. 2080 int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp); 2081 if (!res) { 2082 if (pwbufp && *pwbufp) unpoison_passwd(ctx, *pwbufp); 2083 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 2084 } 2085 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2086 return res; 2087} 2088#define INIT_FGETPWENT_R \ 2089 COMMON_INTERCEPT_FUNCTION(fgetpwent_r); 2090#else 2091#define INIT_FGETPWENT_R 2092#endif 2093 2094#if SANITIZER_INTERCEPT_FGETGRENT_R 2095INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf, 2096 SIZE_T buflen, __sanitizer_group **pwbufp) { 2097 void *ctx; 2098 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp); 2099 // FIXME: under ASan the call below may write to freed memory and corrupt 2100 // its metadata. See 2101 // https://github.com/google/sanitizers/issues/321. 2102 int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp); 2103 if (!res) { 2104 if (pwbufp && *pwbufp) unpoison_group(ctx, *pwbufp); 2105 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); 2106 } 2107 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); 2108 return res; 2109} 2110#define INIT_FGETGRENT_R \ 2111 COMMON_INTERCEPT_FUNCTION(fgetgrent_r); 2112#else 2113#define INIT_FGETGRENT_R 2114#endif 2115 2116#if SANITIZER_INTERCEPT_SETPWENT 2117// The only thing these interceptors do is disable any nested interceptors. 2118// These functions may open nss modules and call uninstrumented functions from 2119// them, and we don't want things like strlen() to trigger. 2120INTERCEPTOR(void, setpwent, int dummy) { 2121 void *ctx; 2122 COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy); 2123 REAL(setpwent)(dummy); 2124} 2125INTERCEPTOR(void, endpwent, int dummy) { 2126 void *ctx; 2127 COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy); 2128 REAL(endpwent)(dummy); 2129} 2130INTERCEPTOR(void, setgrent, int dummy) { 2131 void *ctx; 2132 COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy); 2133 REAL(setgrent)(dummy); 2134} 2135INTERCEPTOR(void, endgrent, int dummy) { 2136 void *ctx; 2137 COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy); 2138 REAL(endgrent)(dummy); 2139} 2140#define INIT_SETPWENT \ 2141 COMMON_INTERCEPT_FUNCTION(setpwent); \ 2142 COMMON_INTERCEPT_FUNCTION(endpwent); \ 2143 COMMON_INTERCEPT_FUNCTION(setgrent); \ 2144 COMMON_INTERCEPT_FUNCTION(endgrent); 2145#else 2146#define INIT_SETPWENT 2147#endif 2148 2149#if SANITIZER_INTERCEPT_CLOCK_GETTIME 2150INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) { 2151 void *ctx; 2152 COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp); 2153 // FIXME: under ASan the call below may write to freed memory and corrupt 2154 // its metadata. See 2155 // https://github.com/google/sanitizers/issues/321. 2156 int res = REAL(clock_getres)(clk_id, tp); 2157 if (!res && tp) { 2158 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz); 2159 } 2160 return res; 2161} 2162INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) { 2163 void *ctx; 2164 COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp); 2165 // FIXME: under ASan the call below may write to freed memory and corrupt 2166 // its metadata. See 2167 // https://github.com/google/sanitizers/issues/321. 2168 int res = REAL(clock_gettime)(clk_id, tp); 2169 if (!res) { 2170 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz); 2171 } 2172 return res; 2173} 2174namespace __sanitizer { 2175extern "C" { 2176int real_clock_gettime(u32 clk_id, void *tp) { 2177 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 2178 return internal_clock_gettime(clk_id, tp); 2179 return REAL(clock_gettime)(clk_id, tp); 2180} 2181} // extern "C" 2182} // namespace __sanitizer 2183INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) { 2184 void *ctx; 2185 COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp); 2186 COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz); 2187 return REAL(clock_settime)(clk_id, tp); 2188} 2189#define INIT_CLOCK_GETTIME \ 2190 COMMON_INTERCEPT_FUNCTION(clock_getres); \ 2191 COMMON_INTERCEPT_FUNCTION(clock_gettime); \ 2192 COMMON_INTERCEPT_FUNCTION(clock_settime); 2193#else 2194#define INIT_CLOCK_GETTIME 2195#endif 2196 2197#if SANITIZER_INTERCEPT_GETITIMER 2198INTERCEPTOR(int, getitimer, int which, void *curr_value) { 2199 void *ctx; 2200 COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value); 2201 // FIXME: under ASan the call below may write to freed memory and corrupt 2202 // its metadata. See 2203 // https://github.com/google/sanitizers/issues/321. 2204 int res = REAL(getitimer)(which, curr_value); 2205 if (!res && curr_value) { 2206 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz); 2207 } 2208 return res; 2209} 2210INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) { 2211 void *ctx; 2212 COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value); 2213 if (new_value) { 2214 // itimerval can contain padding that may be legitimately uninitialized 2215 const struct __sanitizer_itimerval *nv = 2216 (const struct __sanitizer_itimerval *)new_value; 2217 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_sec, 2218 sizeof(__sanitizer_time_t)); 2219 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_usec, 2220 sizeof(__sanitizer_suseconds_t)); 2221 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_sec, 2222 sizeof(__sanitizer_time_t)); 2223 COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_usec, 2224 sizeof(__sanitizer_suseconds_t)); 2225 } 2226 // FIXME: under ASan the call below may write to freed memory and corrupt 2227 // its metadata. See 2228 // https://github.com/google/sanitizers/issues/321. 2229 int res = REAL(setitimer)(which, new_value, old_value); 2230 if (!res && old_value) { 2231 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz); 2232 } 2233 return res; 2234} 2235#define INIT_GETITIMER \ 2236 COMMON_INTERCEPT_FUNCTION(getitimer); \ 2237 COMMON_INTERCEPT_FUNCTION(setitimer); 2238#else 2239#define INIT_GETITIMER 2240#endif 2241 2242#if SANITIZER_INTERCEPT_GLOB 2243static void unpoison_glob_t(void *ctx, __sanitizer_glob_t *pglob) { 2244 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob)); 2245 // +1 for NULL pointer at the end. 2246 if (pglob->gl_pathv) 2247 COMMON_INTERCEPTOR_WRITE_RANGE( 2248 ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv)); 2249 for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) { 2250 char *p = pglob->gl_pathv[i]; 2251 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, REAL(strlen)(p) + 1); 2252 } 2253} 2254 2255#if SANITIZER_SOLARIS 2256INTERCEPTOR(int, glob, const char *pattern, int flags, 2257 int (*errfunc)(const char *epath, int eerrno), 2258 __sanitizer_glob_t *pglob) { 2259 void *ctx; 2260 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob); 2261 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); 2262 int res = REAL(glob)(pattern, flags, errfunc, pglob); 2263 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); 2264 return res; 2265} 2266#else 2267static THREADLOCAL __sanitizer_glob_t *pglob_copy; 2268 2269static void wrapped_gl_closedir(void *dir) { 2270 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 2271 pglob_copy->gl_closedir(dir); 2272} 2273 2274static void *wrapped_gl_readdir(void *dir) { 2275 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 2276 return pglob_copy->gl_readdir(dir); 2277} 2278 2279static void *wrapped_gl_opendir(const char *s) { 2280 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 2281 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, REAL(strlen)(s) + 1); 2282 return pglob_copy->gl_opendir(s); 2283} 2284 2285static int wrapped_gl_lstat(const char *s, void *st) { 2286 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 2287 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, REAL(strlen)(s) + 1); 2288 return pglob_copy->gl_lstat(s, st); 2289} 2290 2291static int wrapped_gl_stat(const char *s, void *st) { 2292 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 2293 COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, REAL(strlen)(s) + 1); 2294 return pglob_copy->gl_stat(s, st); 2295} 2296 2297static const __sanitizer_glob_t kGlobCopy = { 2298 0, 0, 0, 2299 0, wrapped_gl_closedir, wrapped_gl_readdir, 2300 wrapped_gl_opendir, wrapped_gl_lstat, wrapped_gl_stat}; 2301 2302INTERCEPTOR(int, glob, const char *pattern, int flags, 2303 int (*errfunc)(const char *epath, int eerrno), 2304 __sanitizer_glob_t *pglob) { 2305 void *ctx; 2306 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob); 2307 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); 2308 __sanitizer_glob_t glob_copy; 2309 internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy)); 2310 if (flags & glob_altdirfunc) { 2311 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2312 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2313 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2314 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2315 Swap(pglob->gl_stat, glob_copy.gl_stat); 2316 pglob_copy = &glob_copy; 2317 } 2318 int res = REAL(glob)(pattern, flags, errfunc, pglob); 2319 if (flags & glob_altdirfunc) { 2320 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2321 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2322 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2323 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2324 Swap(pglob->gl_stat, glob_copy.gl_stat); 2325 } 2326 pglob_copy = 0; 2327 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); 2328 return res; 2329} 2330#endif // SANITIZER_SOLARIS 2331#define INIT_GLOB \ 2332 COMMON_INTERCEPT_FUNCTION(glob); 2333#else // SANITIZER_INTERCEPT_GLOB 2334#define INIT_GLOB 2335#endif // SANITIZER_INTERCEPT_GLOB 2336 2337#if SANITIZER_INTERCEPT_GLOB64 2338INTERCEPTOR(int, glob64, const char *pattern, int flags, 2339 int (*errfunc)(const char *epath, int eerrno), 2340 __sanitizer_glob_t *pglob) { 2341 void *ctx; 2342 COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob); 2343 COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); 2344 __sanitizer_glob_t glob_copy; 2345 internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy)); 2346 if (flags & glob_altdirfunc) { 2347 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2348 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2349 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2350 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2351 Swap(pglob->gl_stat, glob_copy.gl_stat); 2352 pglob_copy = &glob_copy; 2353 } 2354 int res = REAL(glob64)(pattern, flags, errfunc, pglob); 2355 if (flags & glob_altdirfunc) { 2356 Swap(pglob->gl_closedir, glob_copy.gl_closedir); 2357 Swap(pglob->gl_readdir, glob_copy.gl_readdir); 2358 Swap(pglob->gl_opendir, glob_copy.gl_opendir); 2359 Swap(pglob->gl_lstat, glob_copy.gl_lstat); 2360 Swap(pglob->gl_stat, glob_copy.gl_stat); 2361 } 2362 pglob_copy = 0; 2363 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); 2364 return res; 2365} 2366#define INIT_GLOB64 \ 2367 COMMON_INTERCEPT_FUNCTION(glob64); 2368#else // SANITIZER_INTERCEPT_GLOB64 2369#define INIT_GLOB64 2370#endif // SANITIZER_INTERCEPT_GLOB64 2371 2372#if SANITIZER_INTERCEPT_WAIT 2373// According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version 2374// suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for 2375// details. 2376INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) { 2377 void *ctx; 2378 COMMON_INTERCEPTOR_ENTER(ctx, wait, status); 2379 // FIXME: under ASan the call below may write to freed memory and corrupt 2380 // its metadata. See 2381 // https://github.com/google/sanitizers/issues/321. 2382 int res = REAL(wait)(status); 2383 if (res != -1 && status) 2384 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2385 return res; 2386} 2387// On FreeBSD id_t is always 64-bit wide. 2388#if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32) 2389INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, long long id, void *infop, 2390 int options) { 2391#else 2392INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop, 2393 int options) { 2394#endif 2395 void *ctx; 2396 COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options); 2397 // FIXME: under ASan the call below may write to freed memory and corrupt 2398 // its metadata. See 2399 // https://github.com/google/sanitizers/issues/321. 2400 int res = REAL(waitid)(idtype, id, infop, options); 2401 if (res != -1 && infop) 2402 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz); 2403 return res; 2404} 2405INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) { 2406 void *ctx; 2407 COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options); 2408 // FIXME: under ASan the call below may write to freed memory and corrupt 2409 // its metadata. See 2410 // https://github.com/google/sanitizers/issues/321. 2411 int res = REAL(waitpid)(pid, status, options); 2412 if (res != -1 && status) 2413 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2414 return res; 2415} 2416INTERCEPTOR(int, wait3, int *status, int options, void *rusage) { 2417 void *ctx; 2418 COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage); 2419 // FIXME: under ASan the call below may write to freed memory and corrupt 2420 // its metadata. See 2421 // https://github.com/google/sanitizers/issues/321. 2422 int res = REAL(wait3)(status, options, rusage); 2423 if (res != -1) { 2424 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2425 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); 2426 } 2427 return res; 2428} 2429#if SANITIZER_ANDROID 2430INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) { 2431 void *ctx; 2432 COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage); 2433 // FIXME: under ASan the call below may write to freed memory and corrupt 2434 // its metadata. See 2435 // https://github.com/google/sanitizers/issues/321. 2436 int res = REAL(__wait4)(pid, status, options, rusage); 2437 if (res != -1) { 2438 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2439 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); 2440 } 2441 return res; 2442} 2443#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4); 2444#else 2445INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) { 2446 void *ctx; 2447 COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage); 2448 // FIXME: under ASan the call below may write to freed memory and corrupt 2449 // its metadata. See 2450 // https://github.com/google/sanitizers/issues/321. 2451 int res = REAL(wait4)(pid, status, options, rusage); 2452 if (res != -1) { 2453 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); 2454 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); 2455 } 2456 return res; 2457} 2458#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4); 2459#endif // SANITIZER_ANDROID 2460#define INIT_WAIT \ 2461 COMMON_INTERCEPT_FUNCTION(wait); \ 2462 COMMON_INTERCEPT_FUNCTION(waitid); \ 2463 COMMON_INTERCEPT_FUNCTION(waitpid); \ 2464 COMMON_INTERCEPT_FUNCTION(wait3); 2465#else 2466#define INIT_WAIT 2467#define INIT_WAIT4 2468#endif 2469 2470#if SANITIZER_INTERCEPT_INET 2471INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) { 2472 void *ctx; 2473 COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size); 2474 uptr sz = __sanitizer_in_addr_sz(af); 2475 if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz); 2476 // FIXME: figure out read size based on the address family. 2477 // FIXME: under ASan the call below may write to freed memory and corrupt 2478 // its metadata. See 2479 // https://github.com/google/sanitizers/issues/321. 2480 char *res = REAL(inet_ntop)(af, src, dst, size); 2481 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 2482 return res; 2483} 2484INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) { 2485 void *ctx; 2486 COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst); 2487 COMMON_INTERCEPTOR_READ_STRING(ctx, src, 0); 2488 // FIXME: figure out read size based on the address family. 2489 // FIXME: under ASan the call below may write to freed memory and corrupt 2490 // its metadata. See 2491 // https://github.com/google/sanitizers/issues/321. 2492 int res = REAL(inet_pton)(af, src, dst); 2493 if (res == 1) { 2494 uptr sz = __sanitizer_in_addr_sz(af); 2495 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz); 2496 } 2497 return res; 2498} 2499#define INIT_INET \ 2500 COMMON_INTERCEPT_FUNCTION(inet_ntop); \ 2501 COMMON_INTERCEPT_FUNCTION(inet_pton); 2502#else 2503#define INIT_INET 2504#endif 2505 2506#if SANITIZER_INTERCEPT_INET 2507INTERCEPTOR(int, inet_aton, const char *cp, void *dst) { 2508 void *ctx; 2509 COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst); 2510 if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, REAL(strlen)(cp) + 1); 2511 // FIXME: under ASan the call below may write to freed memory and corrupt 2512 // its metadata. See 2513 // https://github.com/google/sanitizers/issues/321. 2514 int res = REAL(inet_aton)(cp, dst); 2515 if (res != 0) { 2516 uptr sz = __sanitizer_in_addr_sz(af_inet); 2517 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz); 2518 } 2519 return res; 2520} 2521#define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton); 2522#else 2523#define INIT_INET_ATON 2524#endif 2525 2526#if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM 2527INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) { 2528 void *ctx; 2529 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param); 2530 // FIXME: under ASan the call below may write to freed memory and corrupt 2531 // its metadata. See 2532 // https://github.com/google/sanitizers/issues/321. 2533 int res = REAL(pthread_getschedparam)(thread, policy, param); 2534 if (res == 0) { 2535 if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy)); 2536 if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param)); 2537 } 2538 return res; 2539} 2540#define INIT_PTHREAD_GETSCHEDPARAM \ 2541 COMMON_INTERCEPT_FUNCTION(pthread_getschedparam); 2542#else 2543#define INIT_PTHREAD_GETSCHEDPARAM 2544#endif 2545 2546#if SANITIZER_INTERCEPT_GETADDRINFO 2547INTERCEPTOR(int, getaddrinfo, char *node, char *service, 2548 struct __sanitizer_addrinfo *hints, 2549 struct __sanitizer_addrinfo **out) { 2550 void *ctx; 2551 COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out); 2552 if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, REAL(strlen)(node) + 1); 2553 if (service) 2554 COMMON_INTERCEPTOR_READ_RANGE(ctx, service, REAL(strlen)(service) + 1); 2555 if (hints) 2556 COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo)); 2557 // FIXME: under ASan the call below may write to freed memory and corrupt 2558 // its metadata. See 2559 // https://github.com/google/sanitizers/issues/321. 2560 int res = REAL(getaddrinfo)(node, service, hints, out); 2561 if (res == 0 && out) { 2562 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out)); 2563 struct __sanitizer_addrinfo *p = *out; 2564 while (p) { 2565 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 2566 if (p->ai_addr) 2567 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen); 2568 if (p->ai_canonname) 2569 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname, 2570 REAL(strlen)(p->ai_canonname) + 1); 2571 p = p->ai_next; 2572 } 2573 } 2574 return res; 2575} 2576#define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo); 2577#else 2578#define INIT_GETADDRINFO 2579#endif 2580 2581#if SANITIZER_INTERCEPT_GETNAMEINFO 2582INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host, 2583 unsigned hostlen, char *serv, unsigned servlen, int flags) { 2584 void *ctx; 2585 COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen, 2586 serv, servlen, flags); 2587 // FIXME: consider adding READ_RANGE(sockaddr, salen) 2588 // There is padding in in_addr that may make this too noisy 2589 // FIXME: under ASan the call below may write to freed memory and corrupt 2590 // its metadata. See 2591 // https://github.com/google/sanitizers/issues/321. 2592 int res = 2593 REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags); 2594 if (res == 0) { 2595 if (host && hostlen) 2596 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, REAL(strlen)(host) + 1); 2597 if (serv && servlen) 2598 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, REAL(strlen)(serv) + 1); 2599 } 2600 return res; 2601} 2602#define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo); 2603#else 2604#define INIT_GETNAMEINFO 2605#endif 2606 2607#if SANITIZER_INTERCEPT_GETSOCKNAME 2608INTERCEPTOR(int, getsockname, int sock_fd, void *addr, int *addrlen) { 2609 void *ctx; 2610 COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen); 2611 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 2612 int addrlen_in = *addrlen; 2613 // FIXME: under ASan the call below may write to freed memory and corrupt 2614 // its metadata. See 2615 // https://github.com/google/sanitizers/issues/321. 2616 int res = REAL(getsockname)(sock_fd, addr, addrlen); 2617 if (res == 0) { 2618 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addrlen_in, *addrlen)); 2619 } 2620 return res; 2621} 2622#define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname); 2623#else 2624#define INIT_GETSOCKNAME 2625#endif 2626 2627#if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R 2628static void write_hostent(void *ctx, struct __sanitizer_hostent *h) { 2629 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent)); 2630 if (h->h_name) 2631 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, REAL(strlen)(h->h_name) + 1); 2632 char **p = h->h_aliases; 2633 while (*p) { 2634 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1); 2635 ++p; 2636 } 2637 COMMON_INTERCEPTOR_WRITE_RANGE( 2638 ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases)); 2639 p = h->h_addr_list; 2640 while (*p) { 2641 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length); 2642 ++p; 2643 } 2644 COMMON_INTERCEPTOR_WRITE_RANGE( 2645 ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list)); 2646} 2647#endif 2648 2649#if SANITIZER_INTERCEPT_GETHOSTBYNAME 2650INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) { 2651 void *ctx; 2652 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name); 2653 struct __sanitizer_hostent *res = REAL(gethostbyname)(name); 2654 if (res) write_hostent(ctx, res); 2655 return res; 2656} 2657 2658INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len, 2659 int type) { 2660 void *ctx; 2661 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type); 2662 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len); 2663 struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type); 2664 if (res) write_hostent(ctx, res); 2665 return res; 2666} 2667 2668INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) { 2669 void *ctx; 2670 COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake); 2671 struct __sanitizer_hostent *res = REAL(gethostent)(fake); 2672 if (res) write_hostent(ctx, res); 2673 return res; 2674} 2675#define INIT_GETHOSTBYNAME \ 2676 COMMON_INTERCEPT_FUNCTION(gethostent); \ 2677 COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \ 2678 COMMON_INTERCEPT_FUNCTION(gethostbyname); 2679#else 2680#define INIT_GETHOSTBYNAME 2681#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME 2682 2683#if SANITIZER_INTERCEPT_GETHOSTBYNAME2 2684INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) { 2685 void *ctx; 2686 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af); 2687 struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af); 2688 if (res) write_hostent(ctx, res); 2689 return res; 2690} 2691#define INIT_GETHOSTBYNAME2 COMMON_INTERCEPT_FUNCTION(gethostbyname2); 2692#else 2693#define INIT_GETHOSTBYNAME2 2694#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME2 2695 2696#if SANITIZER_INTERCEPT_GETHOSTBYNAME_R 2697INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret, 2698 char *buf, SIZE_T buflen, __sanitizer_hostent **result, 2699 int *h_errnop) { 2700 void *ctx; 2701 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result, 2702 h_errnop); 2703 // FIXME: under ASan the call below may write to freed memory and corrupt 2704 // its metadata. See 2705 // https://github.com/google/sanitizers/issues/321. 2706 int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop); 2707 if (result) { 2708 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2709 if (res == 0 && *result) write_hostent(ctx, *result); 2710 } 2711 if (h_errnop) 2712 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 2713 return res; 2714} 2715#define INIT_GETHOSTBYNAME_R COMMON_INTERCEPT_FUNCTION(gethostbyname_r); 2716#else 2717#define INIT_GETHOSTBYNAME_R 2718#endif 2719 2720#if SANITIZER_INTERCEPT_GETHOSTENT_R 2721INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf, 2722 SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) { 2723 void *ctx; 2724 COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result, 2725 h_errnop); 2726 // FIXME: under ASan the call below may write to freed memory and corrupt 2727 // its metadata. See 2728 // https://github.com/google/sanitizers/issues/321. 2729 int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop); 2730 if (result) { 2731 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2732 if (res == 0 && *result) write_hostent(ctx, *result); 2733 } 2734 if (h_errnop) 2735 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 2736 return res; 2737} 2738#define INIT_GETHOSTENT_R \ 2739 COMMON_INTERCEPT_FUNCTION(gethostent_r); 2740#else 2741#define INIT_GETHOSTENT_R 2742#endif 2743 2744#if SANITIZER_INTERCEPT_GETHOSTBYADDR_R 2745INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type, 2746 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen, 2747 __sanitizer_hostent **result, int *h_errnop) { 2748 void *ctx; 2749 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf, 2750 buflen, result, h_errnop); 2751 COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len); 2752 // FIXME: under ASan the call below may write to freed memory and corrupt 2753 // its metadata. See 2754 // https://github.com/google/sanitizers/issues/321. 2755 int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result, 2756 h_errnop); 2757 if (result) { 2758 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2759 if (res == 0 && *result) write_hostent(ctx, *result); 2760 } 2761 if (h_errnop) 2762 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 2763 return res; 2764} 2765#define INIT_GETHOSTBYADDR_R \ 2766 COMMON_INTERCEPT_FUNCTION(gethostbyaddr_r); 2767#else 2768#define INIT_GETHOSTBYADDR_R 2769#endif 2770 2771#if SANITIZER_INTERCEPT_GETHOSTBYNAME2_R 2772INTERCEPTOR(int, gethostbyname2_r, char *name, int af, 2773 struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen, 2774 __sanitizer_hostent **result, int *h_errnop) { 2775 void *ctx; 2776 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen, 2777 result, h_errnop); 2778 // FIXME: under ASan the call below may write to freed memory and corrupt 2779 // its metadata. See 2780 // https://github.com/google/sanitizers/issues/321. 2781 int res = 2782 REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop); 2783 if (result) { 2784 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 2785 if (res == 0 && *result) write_hostent(ctx, *result); 2786 } 2787 if (h_errnop) 2788 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); 2789 return res; 2790} 2791#define INIT_GETHOSTBYNAME2_R \ 2792 COMMON_INTERCEPT_FUNCTION(gethostbyname2_r); 2793#else 2794#define INIT_GETHOSTBYNAME2_R 2795#endif 2796 2797#if SANITIZER_INTERCEPT_GETSOCKOPT 2798INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval, 2799 int *optlen) { 2800 void *ctx; 2801 COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval, 2802 optlen); 2803 if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen)); 2804 // FIXME: under ASan the call below may write to freed memory and corrupt 2805 // its metadata. See 2806 // https://github.com/google/sanitizers/issues/321. 2807 int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen); 2808 if (res == 0) 2809 if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen); 2810 return res; 2811} 2812#define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt); 2813#else 2814#define INIT_GETSOCKOPT 2815#endif 2816 2817#if SANITIZER_INTERCEPT_ACCEPT 2818INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) { 2819 void *ctx; 2820 COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen); 2821 unsigned addrlen0 = 0; 2822 if (addrlen) { 2823 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 2824 addrlen0 = *addrlen; 2825 } 2826 int fd2 = REAL(accept)(fd, addr, addrlen); 2827 if (fd2 >= 0) { 2828 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); 2829 if (addr && addrlen) 2830 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); 2831 } 2832 return fd2; 2833} 2834#define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept); 2835#else 2836#define INIT_ACCEPT 2837#endif 2838 2839#if SANITIZER_INTERCEPT_ACCEPT4 2840INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) { 2841 void *ctx; 2842 COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f); 2843 unsigned addrlen0 = 0; 2844 if (addrlen) { 2845 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 2846 addrlen0 = *addrlen; 2847 } 2848 // FIXME: under ASan the call below may write to freed memory and corrupt 2849 // its metadata. See 2850 // https://github.com/google/sanitizers/issues/321. 2851 int fd2 = REAL(accept4)(fd, addr, addrlen, f); 2852 if (fd2 >= 0) { 2853 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); 2854 if (addr && addrlen) 2855 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); 2856 } 2857 return fd2; 2858} 2859#define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4); 2860#else 2861#define INIT_ACCEPT4 2862#endif 2863 2864#if SANITIZER_INTERCEPT_PACCEPT 2865INTERCEPTOR(int, paccept, int fd, void *addr, unsigned *addrlen, 2866 __sanitizer_sigset_t *set, int f) { 2867 void *ctx; 2868 COMMON_INTERCEPTOR_ENTER(ctx, paccept, fd, addr, addrlen, set, f); 2869 unsigned addrlen0 = 0; 2870 if (addrlen) { 2871 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); 2872 addrlen0 = *addrlen; 2873 } 2874 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 2875 int fd2 = REAL(paccept)(fd, addr, addrlen, set, f); 2876 if (fd2 >= 0) { 2877 if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); 2878 if (addr && addrlen) 2879 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); 2880 } 2881 return fd2; 2882} 2883#define INIT_PACCEPT COMMON_INTERCEPT_FUNCTION(paccept); 2884#else 2885#define INIT_PACCEPT 2886#endif 2887 2888#if SANITIZER_INTERCEPT_MODF 2889INTERCEPTOR(double, modf, double x, double *iptr) { 2890 void *ctx; 2891 COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr); 2892 // FIXME: under ASan the call below may write to freed memory and corrupt 2893 // its metadata. See 2894 // https://github.com/google/sanitizers/issues/321. 2895 double res = REAL(modf)(x, iptr); 2896 if (iptr) { 2897 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); 2898 } 2899 return res; 2900} 2901INTERCEPTOR(float, modff, float x, float *iptr) { 2902 void *ctx; 2903 COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr); 2904 // FIXME: under ASan the call below may write to freed memory and corrupt 2905 // its metadata. See 2906 // https://github.com/google/sanitizers/issues/321. 2907 float res = REAL(modff)(x, iptr); 2908 if (iptr) { 2909 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); 2910 } 2911 return res; 2912} 2913INTERCEPTOR(long double, modfl, long double x, long double *iptr) { 2914 void *ctx; 2915 COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr); 2916 // FIXME: under ASan the call below may write to freed memory and corrupt 2917 // its metadata. See 2918 // https://github.com/google/sanitizers/issues/321. 2919 long double res = REAL(modfl)(x, iptr); 2920 if (iptr) { 2921 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); 2922 } 2923 return res; 2924} 2925#define INIT_MODF \ 2926 COMMON_INTERCEPT_FUNCTION(modf); \ 2927 COMMON_INTERCEPT_FUNCTION(modff); \ 2928 COMMON_INTERCEPT_FUNCTION_LDBL(modfl); 2929#else 2930#define INIT_MODF 2931#endif 2932 2933#if SANITIZER_INTERCEPT_RECVMSG || SANITIZER_INTERCEPT_RECVMMSG 2934static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg, 2935 SSIZE_T maxlen) { 2936 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg)); 2937 if (msg->msg_name && msg->msg_namelen) 2938 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name, msg->msg_namelen); 2939 if (msg->msg_iov && msg->msg_iovlen) 2940 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov, 2941 sizeof(*msg->msg_iov) * msg->msg_iovlen); 2942 write_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen); 2943 if (msg->msg_control && msg->msg_controllen) 2944 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen); 2945} 2946#endif 2947 2948#if SANITIZER_INTERCEPT_RECVMSG 2949INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg, 2950 int flags) { 2951 void *ctx; 2952 COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags); 2953 // FIXME: under ASan the call below may write to freed memory and corrupt 2954 // its metadata. See 2955 // https://github.com/google/sanitizers/issues/321. 2956 SSIZE_T res = REAL(recvmsg)(fd, msg, flags); 2957 if (res >= 0) { 2958 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 2959 if (msg) { 2960 write_msghdr(ctx, msg, res); 2961 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg); 2962 } 2963 } 2964 return res; 2965} 2966#define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg); 2967#else 2968#define INIT_RECVMSG 2969#endif 2970 2971#if SANITIZER_INTERCEPT_RECVMMSG 2972INTERCEPTOR(int, recvmmsg, int fd, struct __sanitizer_mmsghdr *msgvec, 2973 unsigned int vlen, int flags, void *timeout) { 2974 void *ctx; 2975 COMMON_INTERCEPTOR_ENTER(ctx, recvmmsg, fd, msgvec, vlen, flags, timeout); 2976 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz); 2977 int res = REAL(recvmmsg)(fd, msgvec, vlen, flags, timeout); 2978 if (res >= 0) { 2979 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 2980 for (int i = 0; i < res; ++i) { 2981 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len, 2982 sizeof(msgvec[i].msg_len)); 2983 write_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len); 2984 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, &msgvec[i].msg_hdr); 2985 } 2986 } 2987 return res; 2988} 2989#define INIT_RECVMMSG COMMON_INTERCEPT_FUNCTION(recvmmsg); 2990#else 2991#define INIT_RECVMMSG 2992#endif 2993 2994#if SANITIZER_INTERCEPT_SENDMSG || SANITIZER_INTERCEPT_SENDMMSG 2995static void read_msghdr_control(void *ctx, void *control, uptr controllen) { 2996 const unsigned kCmsgDataOffset = 2997 RoundUpTo(sizeof(__sanitizer_cmsghdr), sizeof(uptr)); 2998 2999 char *p = (char *)control; 3000 char *const control_end = p + controllen; 3001 while (true) { 3002 if (p + sizeof(__sanitizer_cmsghdr) > control_end) break; 3003 __sanitizer_cmsghdr *cmsg = (__sanitizer_cmsghdr *)p; 3004 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_len, sizeof(cmsg->cmsg_len)); 3005 3006 if (p + RoundUpTo(cmsg->cmsg_len, sizeof(uptr)) > control_end) break; 3007 3008 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_level, 3009 sizeof(cmsg->cmsg_level)); 3010 COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_type, 3011 sizeof(cmsg->cmsg_type)); 3012 3013 if (cmsg->cmsg_len > kCmsgDataOffset) { 3014 char *data = p + kCmsgDataOffset; 3015 unsigned data_len = cmsg->cmsg_len - kCmsgDataOffset; 3016 if (data_len > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, data, data_len); 3017 } 3018 3019 p += RoundUpTo(cmsg->cmsg_len, sizeof(uptr)); 3020 } 3021} 3022 3023static void read_msghdr(void *ctx, struct __sanitizer_msghdr *msg, 3024 SSIZE_T maxlen) { 3025#define R(f) \ 3026 COMMON_INTERCEPTOR_READ_RANGE(ctx, &msg->msg_##f, sizeof(msg->msg_##f)) 3027 R(name); 3028 R(namelen); 3029 R(iov); 3030 R(iovlen); 3031 R(control); 3032 R(controllen); 3033 R(flags); 3034#undef R 3035 if (msg->msg_name && msg->msg_namelen) 3036 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_name, msg->msg_namelen); 3037 if (msg->msg_iov && msg->msg_iovlen) 3038 COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_iov, 3039 sizeof(*msg->msg_iov) * msg->msg_iovlen); 3040 read_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen); 3041 if (msg->msg_control && msg->msg_controllen) 3042 read_msghdr_control(ctx, msg->msg_control, msg->msg_controllen); 3043} 3044#endif 3045 3046#if SANITIZER_INTERCEPT_SENDMSG 3047INTERCEPTOR(SSIZE_T, sendmsg, int fd, struct __sanitizer_msghdr *msg, 3048 int flags) { 3049 void *ctx; 3050 COMMON_INTERCEPTOR_ENTER(ctx, sendmsg, fd, msg, flags); 3051 if (fd >= 0) { 3052 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 3053 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 3054 } 3055 SSIZE_T res = REAL(sendmsg)(fd, msg, flags); 3056 if (common_flags()->intercept_send && res >= 0 && msg) 3057 read_msghdr(ctx, msg, res); 3058 return res; 3059} 3060#define INIT_SENDMSG COMMON_INTERCEPT_FUNCTION(sendmsg); 3061#else 3062#define INIT_SENDMSG 3063#endif 3064 3065#if SANITIZER_INTERCEPT_SENDMMSG 3066INTERCEPTOR(int, sendmmsg, int fd, struct __sanitizer_mmsghdr *msgvec, 3067 unsigned vlen, int flags) { 3068 void *ctx; 3069 COMMON_INTERCEPTOR_ENTER(ctx, sendmmsg, fd, msgvec, vlen, flags); 3070 if (fd >= 0) { 3071 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 3072 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 3073 } 3074 int res = REAL(sendmmsg)(fd, msgvec, vlen, flags); 3075 if (res >= 0 && msgvec) 3076 for (int i = 0; i < res; ++i) { 3077 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len, 3078 sizeof(msgvec[i].msg_len)); 3079 if (common_flags()->intercept_send) 3080 read_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len); 3081 } 3082 return res; 3083} 3084#define INIT_SENDMMSG COMMON_INTERCEPT_FUNCTION(sendmmsg); 3085#else 3086#define INIT_SENDMMSG 3087#endif 3088 3089#if SANITIZER_INTERCEPT_GETPEERNAME 3090INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) { 3091 void *ctx; 3092 COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen); 3093 unsigned addr_sz; 3094 if (addrlen) addr_sz = *addrlen; 3095 // FIXME: under ASan the call below may write to freed memory and corrupt 3096 // its metadata. See 3097 // https://github.com/google/sanitizers/issues/321. 3098 int res = REAL(getpeername)(sockfd, addr, addrlen); 3099 if (!res && addr && addrlen) 3100 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen)); 3101 return res; 3102} 3103#define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername); 3104#else 3105#define INIT_GETPEERNAME 3106#endif 3107 3108#if SANITIZER_INTERCEPT_SYSINFO 3109INTERCEPTOR(int, sysinfo, void *info) { 3110 void *ctx; 3111 // FIXME: under ASan the call below may write to freed memory and corrupt 3112 // its metadata. See 3113 // https://github.com/google/sanitizers/issues/321. 3114 COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info); 3115 int res = REAL(sysinfo)(info); 3116 if (!res && info) 3117 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz); 3118 return res; 3119} 3120#define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo); 3121#else 3122#define INIT_SYSINFO 3123#endif 3124 3125#if SANITIZER_INTERCEPT_READDIR 3126INTERCEPTOR(__sanitizer_dirent *, opendir, const char *path) { 3127 void *ctx; 3128 COMMON_INTERCEPTOR_ENTER(ctx, opendir, path); 3129 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 3130 __sanitizer_dirent *res = REAL(opendir)(path); 3131 if (res) 3132 COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path); 3133 return res; 3134} 3135 3136INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) { 3137 void *ctx; 3138 COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp); 3139 // FIXME: under ASan the call below may write to freed memory and corrupt 3140 // its metadata. See 3141 // https://github.com/google/sanitizers/issues/321. 3142 __sanitizer_dirent *res = REAL(readdir)(dirp); 3143 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen); 3144 return res; 3145} 3146 3147INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry, 3148 __sanitizer_dirent **result) { 3149 void *ctx; 3150 COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result); 3151 // FIXME: under ASan the call below may write to freed memory and corrupt 3152 // its metadata. See 3153 // https://github.com/google/sanitizers/issues/321. 3154 int res = REAL(readdir_r)(dirp, entry, result); 3155 if (!res) { 3156 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 3157 if (*result) 3158 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen); 3159 } 3160 return res; 3161} 3162 3163#define INIT_READDIR \ 3164 COMMON_INTERCEPT_FUNCTION(opendir); \ 3165 COMMON_INTERCEPT_FUNCTION(readdir); \ 3166 COMMON_INTERCEPT_FUNCTION(readdir_r); 3167#else 3168#define INIT_READDIR 3169#endif 3170 3171#if SANITIZER_INTERCEPT_READDIR64 3172INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) { 3173 void *ctx; 3174 COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp); 3175 // FIXME: under ASan the call below may write to freed memory and corrupt 3176 // its metadata. See 3177 // https://github.com/google/sanitizers/issues/321. 3178 __sanitizer_dirent64 *res = REAL(readdir64)(dirp); 3179 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen); 3180 return res; 3181} 3182 3183INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry, 3184 __sanitizer_dirent64 **result) { 3185 void *ctx; 3186 COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result); 3187 // FIXME: under ASan the call below may write to freed memory and corrupt 3188 // its metadata. See 3189 // https://github.com/google/sanitizers/issues/321. 3190 int res = REAL(readdir64_r)(dirp, entry, result); 3191 if (!res) { 3192 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 3193 if (*result) 3194 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen); 3195 } 3196 return res; 3197} 3198#define INIT_READDIR64 \ 3199 COMMON_INTERCEPT_FUNCTION(readdir64); \ 3200 COMMON_INTERCEPT_FUNCTION(readdir64_r); 3201#else 3202#define INIT_READDIR64 3203#endif 3204 3205#if SANITIZER_INTERCEPT_PTRACE 3206INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) { 3207 void *ctx; 3208 COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data); 3209 __sanitizer_iovec local_iovec; 3210 3211 if (data) { 3212 if (request == ptrace_setregs) 3213 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_regs_struct_sz); 3214 else if (request == ptrace_setfpregs) 3215 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpregs_struct_sz); 3216 else if (request == ptrace_setfpxregs) 3217 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpxregs_struct_sz); 3218 else if (request == ptrace_setvfpregs) 3219 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_vfpregs_struct_sz); 3220 else if (request == ptrace_setsiginfo) 3221 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, siginfo_t_sz); 3222 // Some kernel might zero the iovec::iov_base in case of invalid 3223 // write access. In this case copy the invalid address for further 3224 // inspection. 3225 else if (request == ptrace_setregset || request == ptrace_getregset) { 3226 __sanitizer_iovec *iovec = (__sanitizer_iovec*)data; 3227 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec)); 3228 local_iovec = *iovec; 3229 if (request == ptrace_setregset) 3230 COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec->iov_base, iovec->iov_len); 3231 } 3232 } 3233 3234 // FIXME: under ASan the call below may write to freed memory and corrupt 3235 // its metadata. See 3236 // https://github.com/google/sanitizers/issues/321. 3237 uptr res = REAL(ptrace)(request, pid, addr, data); 3238 3239 if (!res && data) { 3240 // Note that PEEK* requests assign different meaning to the return value. 3241 // This function does not handle them (nor does it need to). 3242 if (request == ptrace_getregs) 3243 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_regs_struct_sz); 3244 else if (request == ptrace_getfpregs) 3245 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpregs_struct_sz); 3246 else if (request == ptrace_getfpxregs) 3247 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpxregs_struct_sz); 3248 else if (request == ptrace_getvfpregs) 3249 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_vfpregs_struct_sz); 3250 else if (request == ptrace_getsiginfo) 3251 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, siginfo_t_sz); 3252 else if (request == ptrace_geteventmsg) 3253 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(unsigned long)); 3254 else if (request == ptrace_getregset) { 3255 __sanitizer_iovec *iovec = (__sanitizer_iovec*)data; 3256 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec, sizeof(*iovec)); 3257 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, local_iovec.iov_base, 3258 local_iovec.iov_len); 3259 } 3260 } 3261 return res; 3262} 3263 3264#define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace); 3265#else 3266#define INIT_PTRACE 3267#endif 3268 3269#if SANITIZER_INTERCEPT_SETLOCALE 3270static void unpoison_ctype_arrays(void *ctx) { 3271#if SANITIZER_NETBSD 3272 // These arrays contain 256 regular elements in unsigned char range + 1 EOF 3273 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _ctype_tab_, 257 * sizeof(short)); 3274 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _toupper_tab_, 257 * sizeof(short)); 3275 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _tolower_tab_, 257 * sizeof(short)); 3276#endif 3277} 3278 3279INTERCEPTOR(char *, setlocale, int category, char *locale) { 3280 void *ctx; 3281 COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale); 3282 if (locale) 3283 COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, REAL(strlen)(locale) + 1); 3284 char *res = REAL(setlocale)(category, locale); 3285 if (res) { 3286 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 3287 unpoison_ctype_arrays(ctx); 3288 } 3289 return res; 3290} 3291 3292#define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale); 3293#else 3294#define INIT_SETLOCALE 3295#endif 3296 3297#if SANITIZER_INTERCEPT_GETCWD 3298INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) { 3299 void *ctx; 3300 COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size); 3301 // FIXME: under ASan the call below may write to freed memory and corrupt 3302 // its metadata. See 3303 // https://github.com/google/sanitizers/issues/321. 3304 char *res = REAL(getcwd)(buf, size); 3305 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 3306 return res; 3307} 3308#define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd); 3309#else 3310#define INIT_GETCWD 3311#endif 3312 3313#if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME 3314INTERCEPTOR(char *, get_current_dir_name, int fake) { 3315 void *ctx; 3316 COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name, fake); 3317 // FIXME: under ASan the call below may write to freed memory and corrupt 3318 // its metadata. See 3319 // https://github.com/google/sanitizers/issues/321. 3320 char *res = REAL(get_current_dir_name)(fake); 3321 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 3322 return res; 3323} 3324 3325#define INIT_GET_CURRENT_DIR_NAME \ 3326 COMMON_INTERCEPT_FUNCTION(get_current_dir_name); 3327#else 3328#define INIT_GET_CURRENT_DIR_NAME 3329#endif 3330 3331UNUSED static inline void FixRealStrtolEndptr(const char *nptr, char **endptr) { 3332 CHECK(endptr); 3333 if (nptr == *endptr) { 3334 // No digits were found at strtol call, we need to find out the last 3335 // symbol accessed by strtoll on our own. 3336 // We get this symbol by skipping leading blanks and optional +/- sign. 3337 while (IsSpace(*nptr)) nptr++; 3338 if (*nptr == '+' || *nptr == '-') nptr++; 3339 *endptr = const_cast<char *>(nptr); 3340 } 3341 CHECK(*endptr >= nptr); 3342} 3343 3344UNUSED static inline void StrtolFixAndCheck(void *ctx, const char *nptr, 3345 char **endptr, char *real_endptr, int base) { 3346 if (endptr) { 3347 *endptr = real_endptr; 3348 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr)); 3349 } 3350 // If base has unsupported value, strtol can exit with EINVAL 3351 // without reading any characters. So do additional checks only 3352 // if base is valid. 3353 bool is_valid_base = (base == 0) || (2 <= base && base <= 36); 3354 if (is_valid_base) { 3355 FixRealStrtolEndptr(nptr, &real_endptr); 3356 } 3357 COMMON_INTERCEPTOR_READ_STRING(ctx, nptr, is_valid_base ? 3358 (real_endptr - nptr) + 1 : 0); 3359} 3360 3361 3362#if SANITIZER_INTERCEPT_STRTOIMAX 3363INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) { 3364 void *ctx; 3365 COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base); 3366 // FIXME: under ASan the call below may write to freed memory and corrupt 3367 // its metadata. See 3368 // https://github.com/google/sanitizers/issues/321. 3369 char *real_endptr; 3370 INTMAX_T res = REAL(strtoimax)(nptr, &real_endptr, base); 3371 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 3372 return res; 3373} 3374 3375INTERCEPTOR(UINTMAX_T, strtoumax, const char *nptr, char **endptr, int base) { 3376 void *ctx; 3377 COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base); 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 char *real_endptr; 3382 UINTMAX_T res = REAL(strtoumax)(nptr, &real_endptr, base); 3383 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 3384 return res; 3385} 3386 3387#define INIT_STRTOIMAX \ 3388 COMMON_INTERCEPT_FUNCTION(strtoimax); \ 3389 COMMON_INTERCEPT_FUNCTION(strtoumax); 3390#else 3391#define INIT_STRTOIMAX 3392#endif 3393 3394#if SANITIZER_INTERCEPT_MBSTOWCS 3395INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) { 3396 void *ctx; 3397 COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len); 3398 // FIXME: under ASan the call below may write to freed memory and corrupt 3399 // its metadata. See 3400 // https://github.com/google/sanitizers/issues/321. 3401 SIZE_T res = REAL(mbstowcs)(dest, src, len); 3402 if (res != (SIZE_T) - 1 && dest) { 3403 SIZE_T write_cnt = res + (res < len); 3404 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); 3405 } 3406 return res; 3407} 3408 3409INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len, 3410 void *ps) { 3411 void *ctx; 3412 COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps); 3413 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3414 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3415 // FIXME: under ASan the call below may write to freed memory and corrupt 3416 // its metadata. See 3417 // https://github.com/google/sanitizers/issues/321. 3418 SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps); 3419 if (res != (SIZE_T)(-1) && dest && src) { 3420 // This function, and several others, may or may not write the terminating 3421 // \0 character. They write it iff they clear *src. 3422 SIZE_T write_cnt = res + !*src; 3423 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); 3424 } 3425 return res; 3426} 3427 3428#define INIT_MBSTOWCS \ 3429 COMMON_INTERCEPT_FUNCTION(mbstowcs); \ 3430 COMMON_INTERCEPT_FUNCTION(mbsrtowcs); 3431#else 3432#define INIT_MBSTOWCS 3433#endif 3434 3435#if SANITIZER_INTERCEPT_MBSNRTOWCS 3436INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms, 3437 SIZE_T len, void *ps) { 3438 void *ctx; 3439 COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps); 3440 if (src) { 3441 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3442 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms); 3443 } 3444 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 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 SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps); 3449 if (res != (SIZE_T)(-1) && dest && src) { 3450 SIZE_T write_cnt = res + !*src; 3451 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); 3452 } 3453 return res; 3454} 3455 3456#define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs); 3457#else 3458#define INIT_MBSNRTOWCS 3459#endif 3460 3461#if SANITIZER_INTERCEPT_WCSTOMBS 3462INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) { 3463 void *ctx; 3464 COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len); 3465 // FIXME: under ASan the call below may write to freed memory and corrupt 3466 // its metadata. See 3467 // https://github.com/google/sanitizers/issues/321. 3468 SIZE_T res = REAL(wcstombs)(dest, src, len); 3469 if (res != (SIZE_T) - 1 && dest) { 3470 SIZE_T write_cnt = res + (res < len); 3471 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3472 } 3473 return res; 3474} 3475 3476INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len, 3477 void *ps) { 3478 void *ctx; 3479 COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps); 3480 if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3481 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3482 // FIXME: under ASan the call below may write to freed memory and corrupt 3483 // its metadata. See 3484 // https://github.com/google/sanitizers/issues/321. 3485 SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps); 3486 if (res != (SIZE_T) - 1 && dest && src) { 3487 SIZE_T write_cnt = res + !*src; 3488 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3489 } 3490 return res; 3491} 3492 3493#define INIT_WCSTOMBS \ 3494 COMMON_INTERCEPT_FUNCTION(wcstombs); \ 3495 COMMON_INTERCEPT_FUNCTION(wcsrtombs); 3496#else 3497#define INIT_WCSTOMBS 3498#endif 3499 3500#if SANITIZER_INTERCEPT_WCSNRTOMBS 3501INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms, 3502 SIZE_T len, void *ps) { 3503 void *ctx; 3504 COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps); 3505 if (src) { 3506 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 3507 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms); 3508 } 3509 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 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 SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps); 3514 if (res != ((SIZE_T)-1) && dest && src) { 3515 SIZE_T write_cnt = res + !*src; 3516 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3517 } 3518 return res; 3519} 3520 3521#define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs); 3522#else 3523#define INIT_WCSNRTOMBS 3524#endif 3525 3526 3527#if SANITIZER_INTERCEPT_WCRTOMB 3528INTERCEPTOR(SIZE_T, wcrtomb, char *dest, wchar_t src, void *ps) { 3529 void *ctx; 3530 COMMON_INTERCEPTOR_ENTER(ctx, wcrtomb, dest, src, ps); 3531 if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); 3532 // FIXME: under ASan the call below may write to freed memory and corrupt 3533 // its metadata. See 3534 // https://github.com/google/sanitizers/issues/321. 3535 SIZE_T res = REAL(wcrtomb)(dest, src, ps); 3536 if (res != ((SIZE_T)-1) && dest) { 3537 SIZE_T write_cnt = res; 3538 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); 3539 } 3540 return res; 3541} 3542 3543#define INIT_WCRTOMB COMMON_INTERCEPT_FUNCTION(wcrtomb); 3544#else 3545#define INIT_WCRTOMB 3546#endif 3547 3548#if SANITIZER_INTERCEPT_TCGETATTR 3549INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) { 3550 void *ctx; 3551 COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p); 3552 // FIXME: under ASan the call below may write to freed memory and corrupt 3553 // its metadata. See 3554 // https://github.com/google/sanitizers/issues/321. 3555 int res = REAL(tcgetattr)(fd, termios_p); 3556 if (!res && termios_p) 3557 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz); 3558 return res; 3559} 3560 3561#define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr); 3562#else 3563#define INIT_TCGETATTR 3564#endif 3565 3566#if SANITIZER_INTERCEPT_REALPATH 3567INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) { 3568 void *ctx; 3569 COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path); 3570 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 3571 3572 // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest 3573 // version of a versioned symbol. For realpath(), this gives us something 3574 // (called __old_realpath) that does not handle NULL in the second argument. 3575 // Handle it as part of the interceptor. 3576 char *allocated_path = nullptr; 3577 if (!resolved_path) 3578 allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1); 3579 3580 char *res = REAL(realpath)(path, resolved_path); 3581 if (allocated_path && !res) WRAP(free)(allocated_path); 3582 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 3583 return res; 3584} 3585#define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath); 3586#else 3587#define INIT_REALPATH 3588#endif 3589 3590#if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME 3591INTERCEPTOR(char *, canonicalize_file_name, const char *path) { 3592 void *ctx; 3593 COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path); 3594 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 3595 char *res = REAL(canonicalize_file_name)(path); 3596 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 3597 return res; 3598} 3599#define INIT_CANONICALIZE_FILE_NAME \ 3600 COMMON_INTERCEPT_FUNCTION(canonicalize_file_name); 3601#else 3602#define INIT_CANONICALIZE_FILE_NAME 3603#endif 3604 3605#if SANITIZER_INTERCEPT_CONFSTR 3606INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) { 3607 void *ctx; 3608 COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, 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(confstr)(name, buf, len); 3613 if (buf && res) 3614 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len); 3615 return res; 3616} 3617#define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr); 3618#else 3619#define INIT_CONFSTR 3620#endif 3621 3622#if SANITIZER_INTERCEPT_SCHED_GETAFFINITY 3623INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) { 3624 void *ctx; 3625 COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask); 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 int res = REAL(sched_getaffinity)(pid, cpusetsize, mask); 3630 if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize); 3631 return res; 3632} 3633#define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity); 3634#else 3635#define INIT_SCHED_GETAFFINITY 3636#endif 3637 3638#if SANITIZER_INTERCEPT_SCHED_GETPARAM 3639INTERCEPTOR(int, sched_getparam, int pid, void *param) { 3640 void *ctx; 3641 COMMON_INTERCEPTOR_ENTER(ctx, sched_getparam, pid, param); 3642 int res = REAL(sched_getparam)(pid, param); 3643 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, struct_sched_param_sz); 3644 return res; 3645} 3646#define INIT_SCHED_GETPARAM COMMON_INTERCEPT_FUNCTION(sched_getparam); 3647#else 3648#define INIT_SCHED_GETPARAM 3649#endif 3650 3651#if SANITIZER_INTERCEPT_STRERROR 3652INTERCEPTOR(char *, strerror, int errnum) { 3653 void *ctx; 3654 COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum); 3655 char *res = REAL(strerror)(errnum); 3656 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 3657 return res; 3658} 3659#define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror); 3660#else 3661#define INIT_STRERROR 3662#endif 3663 3664#if SANITIZER_INTERCEPT_STRERROR_R 3665// There are 2 versions of strerror_r: 3666// * POSIX version returns 0 on success, negative error code on failure, 3667// writes message to buf. 3668// * GNU version returns message pointer, which points to either buf or some 3669// static storage. 3670#if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE) || \ 3671 SANITIZER_MAC || SANITIZER_ANDROID || SANITIZER_NETBSD || \ 3672 SANITIZER_FREEBSD || SANITIZER_OPENBSD 3673// POSIX version. Spec is not clear on whether buf is NULL-terminated. 3674// At least on OSX, buf contents are valid even when the call fails. 3675INTERCEPTOR(int, strerror_r, int errnum, char *buf, SIZE_T buflen) { 3676 void *ctx; 3677 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen); 3678 // FIXME: under ASan the call below may write to freed memory and corrupt 3679 // its metadata. See 3680 // https://github.com/google/sanitizers/issues/321. 3681 int res = REAL(strerror_r)(errnum, buf, buflen); 3682 3683 SIZE_T sz = internal_strnlen(buf, buflen); 3684 if (sz < buflen) ++sz; 3685 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz); 3686 return res; 3687} 3688#else 3689// GNU version. 3690INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) { 3691 void *ctx; 3692 COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen); 3693 // FIXME: under ASan the call below may write to freed memory and corrupt 3694 // its metadata. See 3695 // https://github.com/google/sanitizers/issues/321. 3696 char *res = REAL(strerror_r)(errnum, buf, buflen); 3697 if (res == buf) 3698 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 3699 else 3700 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 3701 return res; 3702} 3703#endif //(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE || 3704 //SANITIZER_MAC 3705#define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r); 3706#else 3707#define INIT_STRERROR_R 3708#endif 3709 3710#if SANITIZER_INTERCEPT_XPG_STRERROR_R 3711INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) { 3712 void *ctx; 3713 COMMON_INTERCEPTOR_ENTER(ctx, __xpg_strerror_r, errnum, buf, buflen); 3714 // FIXME: under ASan the call below may write to freed memory and corrupt 3715 // its metadata. See 3716 // https://github.com/google/sanitizers/issues/321. 3717 int res = REAL(__xpg_strerror_r)(errnum, buf, buflen); 3718 // This version always returns a null-terminated string. 3719 if (buf && buflen) 3720 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, REAL(strlen)(buf) + 1); 3721 return res; 3722} 3723#define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r); 3724#else 3725#define INIT_XPG_STRERROR_R 3726#endif 3727 3728#if SANITIZER_INTERCEPT_SCANDIR 3729typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *); 3730typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **, 3731 const struct __sanitizer_dirent **); 3732 3733static THREADLOCAL scandir_filter_f scandir_filter; 3734static THREADLOCAL scandir_compar_f scandir_compar; 3735 3736static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) { 3737 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 3738 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, dir->d_reclen); 3739 return scandir_filter(dir); 3740} 3741 3742static int wrapped_scandir_compar(const struct __sanitizer_dirent **a, 3743 const struct __sanitizer_dirent **b) { 3744 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 3745 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a)); 3746 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, (*a)->d_reclen); 3747 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b)); 3748 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, (*b)->d_reclen); 3749 return scandir_compar(a, b); 3750} 3751 3752INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist, 3753 scandir_filter_f filter, scandir_compar_f compar) { 3754 void *ctx; 3755 COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar); 3756 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, REAL(strlen)(dirp) + 1); 3757 scandir_filter = filter; 3758 scandir_compar = compar; 3759 // FIXME: under ASan the call below may write to freed memory and corrupt 3760 // its metadata. See 3761 // https://github.com/google/sanitizers/issues/321. 3762 int res = REAL(scandir)(dirp, namelist, 3763 filter ? wrapped_scandir_filter : nullptr, 3764 compar ? wrapped_scandir_compar : nullptr); 3765 scandir_filter = nullptr; 3766 scandir_compar = nullptr; 3767 if (namelist && res > 0) { 3768 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist)); 3769 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res); 3770 for (int i = 0; i < res; ++i) 3771 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i], 3772 (*namelist)[i]->d_reclen); 3773 } 3774 return res; 3775} 3776#define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir); 3777#else 3778#define INIT_SCANDIR 3779#endif 3780 3781#if SANITIZER_INTERCEPT_SCANDIR64 3782typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *); 3783typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **, 3784 const struct __sanitizer_dirent64 **); 3785 3786static THREADLOCAL scandir64_filter_f scandir64_filter; 3787static THREADLOCAL scandir64_compar_f scandir64_compar; 3788 3789static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) { 3790 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 3791 COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, dir->d_reclen); 3792 return scandir64_filter(dir); 3793} 3794 3795static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a, 3796 const struct __sanitizer_dirent64 **b) { 3797 COMMON_INTERCEPTOR_UNPOISON_PARAM(2); 3798 COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a)); 3799 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, (*a)->d_reclen); 3800 COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b)); 3801 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, (*b)->d_reclen); 3802 return scandir64_compar(a, b); 3803} 3804 3805INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist, 3806 scandir64_filter_f filter, scandir64_compar_f compar) { 3807 void *ctx; 3808 COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar); 3809 if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, REAL(strlen)(dirp) + 1); 3810 scandir64_filter = filter; 3811 scandir64_compar = compar; 3812 // FIXME: under ASan the call below may write to freed memory and corrupt 3813 // its metadata. See 3814 // https://github.com/google/sanitizers/issues/321. 3815 int res = 3816 REAL(scandir64)(dirp, namelist, 3817 filter ? wrapped_scandir64_filter : nullptr, 3818 compar ? wrapped_scandir64_compar : nullptr); 3819 scandir64_filter = nullptr; 3820 scandir64_compar = nullptr; 3821 if (namelist && res > 0) { 3822 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist)); 3823 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res); 3824 for (int i = 0; i < res; ++i) 3825 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i], 3826 (*namelist)[i]->d_reclen); 3827 } 3828 return res; 3829} 3830#define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64); 3831#else 3832#define INIT_SCANDIR64 3833#endif 3834 3835#if SANITIZER_INTERCEPT_GETGROUPS 3836INTERCEPTOR(int, getgroups, int size, u32 *lst) { 3837 void *ctx; 3838 COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst); 3839 // FIXME: under ASan the call below may write to freed memory and corrupt 3840 // its metadata. See 3841 // https://github.com/google/sanitizers/issues/321. 3842 int res = REAL(getgroups)(size, lst); 3843 if (res >= 0 && lst && size > 0) 3844 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst)); 3845 return res; 3846} 3847#define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups); 3848#else 3849#define INIT_GETGROUPS 3850#endif 3851 3852#if SANITIZER_INTERCEPT_POLL 3853static void read_pollfd(void *ctx, __sanitizer_pollfd *fds, 3854 __sanitizer_nfds_t nfds) { 3855 for (unsigned i = 0; i < nfds; ++i) { 3856 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd)); 3857 COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events)); 3858 } 3859} 3860 3861static void write_pollfd(void *ctx, __sanitizer_pollfd *fds, 3862 __sanitizer_nfds_t nfds) { 3863 for (unsigned i = 0; i < nfds; ++i) 3864 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents, 3865 sizeof(fds[i].revents)); 3866} 3867 3868INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds, 3869 int timeout) { 3870 void *ctx; 3871 COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout); 3872 if (fds && nfds) read_pollfd(ctx, fds, nfds); 3873 int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout); 3874 if (fds && nfds) write_pollfd(ctx, fds, nfds); 3875 return res; 3876} 3877#define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll); 3878#else 3879#define INIT_POLL 3880#endif 3881 3882#if SANITIZER_INTERCEPT_PPOLL 3883INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds, 3884 void *timeout_ts, __sanitizer_sigset_t *sigmask) { 3885 void *ctx; 3886 COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask); 3887 if (fds && nfds) read_pollfd(ctx, fds, nfds); 3888 if (timeout_ts) 3889 COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz); 3890 if (sigmask) COMMON_INTERCEPTOR_READ_RANGE(ctx, sigmask, sizeof(*sigmask)); 3891 int res = 3892 COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask); 3893 if (fds && nfds) write_pollfd(ctx, fds, nfds); 3894 return res; 3895} 3896#define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll); 3897#else 3898#define INIT_PPOLL 3899#endif 3900 3901#if SANITIZER_INTERCEPT_WORDEXP 3902INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) { 3903 void *ctx; 3904 COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags); 3905 if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1); 3906 // FIXME: under ASan the call below may write to freed memory and corrupt 3907 // its metadata. See 3908 // https://github.com/google/sanitizers/issues/321. 3909 int res = REAL(wordexp)(s, p, flags); 3910 if (!res && p) { 3911 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 3912 if (p->we_wordc) 3913 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv, 3914 sizeof(*p->we_wordv) * p->we_wordc); 3915 for (uptr i = 0; i < p->we_wordc; ++i) { 3916 char *w = p->we_wordv[i]; 3917 if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, REAL(strlen)(w) + 1); 3918 } 3919 } 3920 return res; 3921} 3922#define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp); 3923#else 3924#define INIT_WORDEXP 3925#endif 3926 3927#if SANITIZER_INTERCEPT_SIGWAIT 3928INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) { 3929 void *ctx; 3930 COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig); 3931 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 3932 // FIXME: under ASan the call below may write to freed memory and corrupt 3933 // its metadata. See 3934 // https://github.com/google/sanitizers/issues/321. 3935 int res = REAL(sigwait)(set, sig); 3936 if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig)); 3937 return res; 3938} 3939#define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait); 3940#else 3941#define INIT_SIGWAIT 3942#endif 3943 3944#if SANITIZER_INTERCEPT_SIGWAITINFO 3945INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) { 3946 void *ctx; 3947 COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info); 3948 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 3949 // FIXME: under ASan the call below may write to freed memory and corrupt 3950 // its metadata. See 3951 // https://github.com/google/sanitizers/issues/321. 3952 int res = REAL(sigwaitinfo)(set, info); 3953 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz); 3954 return res; 3955} 3956#define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo); 3957#else 3958#define INIT_SIGWAITINFO 3959#endif 3960 3961#if SANITIZER_INTERCEPT_SIGTIMEDWAIT 3962INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info, 3963 void *timeout) { 3964 void *ctx; 3965 COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout); 3966 if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz); 3967 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 3968 // FIXME: under ASan the call below may write to freed memory and corrupt 3969 // its metadata. See 3970 // https://github.com/google/sanitizers/issues/321. 3971 int res = REAL(sigtimedwait)(set, info, timeout); 3972 if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz); 3973 return res; 3974} 3975#define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait); 3976#else 3977#define INIT_SIGTIMEDWAIT 3978#endif 3979 3980#if SANITIZER_INTERCEPT_SIGSETOPS 3981INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) { 3982 void *ctx; 3983 COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set); 3984 // FIXME: under ASan the call below may write to freed memory and corrupt 3985 // its metadata. See 3986 // https://github.com/google/sanitizers/issues/321. 3987 int res = REAL(sigemptyset)(set); 3988 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); 3989 return res; 3990} 3991 3992INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) { 3993 void *ctx; 3994 COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set); 3995 // FIXME: under ASan the call below may write to freed memory and corrupt 3996 // its metadata. See 3997 // https://github.com/google/sanitizers/issues/321. 3998 int res = REAL(sigfillset)(set); 3999 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); 4000 return res; 4001} 4002#define INIT_SIGSETOPS \ 4003 COMMON_INTERCEPT_FUNCTION(sigemptyset); \ 4004 COMMON_INTERCEPT_FUNCTION(sigfillset); 4005#else 4006#define INIT_SIGSETOPS 4007#endif 4008 4009#if SANITIZER_INTERCEPT_SIGPENDING 4010INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) { 4011 void *ctx; 4012 COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set); 4013 // FIXME: under ASan the call below may write to freed memory and corrupt 4014 // its metadata. See 4015 // https://github.com/google/sanitizers/issues/321. 4016 int res = REAL(sigpending)(set); 4017 if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); 4018 return res; 4019} 4020#define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending); 4021#else 4022#define INIT_SIGPENDING 4023#endif 4024 4025#if SANITIZER_INTERCEPT_SIGPROCMASK 4026INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set, 4027 __sanitizer_sigset_t *oldset) { 4028 void *ctx; 4029 COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset); 4030 if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); 4031 // FIXME: under ASan the call below may write to freed memory and corrupt 4032 // its metadata. See 4033 // https://github.com/google/sanitizers/issues/321. 4034 int res = REAL(sigprocmask)(how, set, oldset); 4035 if (!res && oldset) 4036 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset)); 4037 return res; 4038} 4039#define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask); 4040#else 4041#define INIT_SIGPROCMASK 4042#endif 4043 4044#if SANITIZER_INTERCEPT_BACKTRACE 4045INTERCEPTOR(int, backtrace, void **buffer, int size) { 4046 void *ctx; 4047 COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size); 4048 // FIXME: under ASan the call below may write to freed memory and corrupt 4049 // its metadata. See 4050 // https://github.com/google/sanitizers/issues/321. 4051 int res = REAL(backtrace)(buffer, size); 4052 if (res && buffer) 4053 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer)); 4054 return res; 4055} 4056 4057INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) { 4058 void *ctx; 4059 COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size); 4060 if (buffer && size) 4061 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer)); 4062 // FIXME: under ASan the call below may write to freed memory and corrupt 4063 // its metadata. See 4064 // https://github.com/google/sanitizers/issues/321. 4065 char **res = REAL(backtrace_symbols)(buffer, size); 4066 if (res && size) { 4067 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res)); 4068 for (int i = 0; i < size; ++i) 4069 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], REAL(strlen(res[i])) + 1); 4070 } 4071 return res; 4072} 4073#define INIT_BACKTRACE \ 4074 COMMON_INTERCEPT_FUNCTION(backtrace); \ 4075 COMMON_INTERCEPT_FUNCTION(backtrace_symbols); 4076#else 4077#define INIT_BACKTRACE 4078#endif 4079 4080#if SANITIZER_INTERCEPT__EXIT 4081INTERCEPTOR(void, _exit, int status) { 4082 void *ctx; 4083 COMMON_INTERCEPTOR_ENTER(ctx, _exit, status); 4084 COMMON_INTERCEPTOR_USER_CALLBACK_START(); 4085 int status1 = COMMON_INTERCEPTOR_ON_EXIT(ctx); 4086 COMMON_INTERCEPTOR_USER_CALLBACK_END(); 4087 if (status == 0) status = status1; 4088 REAL(_exit)(status); 4089} 4090#define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit); 4091#else 4092#define INIT__EXIT 4093#endif 4094 4095#if SANITIZER_INTERCEPT_PTHREAD_MUTEX 4096INTERCEPTOR(int, pthread_mutex_lock, void *m) { 4097 void *ctx; 4098 COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_lock, m); 4099 COMMON_INTERCEPTOR_MUTEX_PRE_LOCK(ctx, m); 4100 int res = REAL(pthread_mutex_lock)(m); 4101 if (res == errno_EOWNERDEAD) 4102 COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m); 4103 if (res == 0 || res == errno_EOWNERDEAD) 4104 COMMON_INTERCEPTOR_MUTEX_POST_LOCK(ctx, m); 4105 if (res == errno_EINVAL) 4106 COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m); 4107 return res; 4108} 4109 4110INTERCEPTOR(int, pthread_mutex_unlock, void *m) { 4111 void *ctx; 4112 COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_unlock, m); 4113 COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m); 4114 int res = REAL(pthread_mutex_unlock)(m); 4115 if (res == errno_EINVAL) 4116 COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m); 4117 return res; 4118} 4119 4120#define INIT_PTHREAD_MUTEX_LOCK COMMON_INTERCEPT_FUNCTION(pthread_mutex_lock) 4121#define INIT_PTHREAD_MUTEX_UNLOCK \ 4122 COMMON_INTERCEPT_FUNCTION(pthread_mutex_unlock) 4123#else 4124#define INIT_PTHREAD_MUTEX_LOCK 4125#define INIT_PTHREAD_MUTEX_UNLOCK 4126#endif 4127 4128#if SANITIZER_INTERCEPT___PTHREAD_MUTEX 4129INTERCEPTOR(int, __pthread_mutex_lock, void *m) { 4130 return WRAP(pthread_mutex_lock)(m); 4131} 4132 4133INTERCEPTOR(int, __pthread_mutex_unlock, void *m) { 4134 return WRAP(pthread_mutex_unlock)(m); 4135} 4136 4137#define INIT___PTHREAD_MUTEX_LOCK \ 4138 COMMON_INTERCEPT_FUNCTION(__pthread_mutex_lock) 4139#define INIT___PTHREAD_MUTEX_UNLOCK \ 4140 COMMON_INTERCEPT_FUNCTION(__pthread_mutex_unlock) 4141#else 4142#define INIT___PTHREAD_MUTEX_LOCK 4143#define INIT___PTHREAD_MUTEX_UNLOCK 4144#endif 4145 4146#if SANITIZER_INTERCEPT___LIBC_MUTEX 4147INTERCEPTOR(int, __libc_mutex_lock, void *m) 4148ALIAS(WRAPPER_NAME(pthread_mutex_lock)); 4149 4150INTERCEPTOR(int, __libc_mutex_unlock, void *m) 4151ALIAS(WRAPPER_NAME(pthread_mutex_unlock)); 4152 4153INTERCEPTOR(int, __libc_thr_setcancelstate, int state, int *oldstate) 4154ALIAS(WRAPPER_NAME(pthread_setcancelstate)); 4155 4156#define INIT___LIBC_MUTEX_LOCK COMMON_INTERCEPT_FUNCTION(__libc_mutex_lock) 4157#define INIT___LIBC_MUTEX_UNLOCK COMMON_INTERCEPT_FUNCTION(__libc_mutex_unlock) 4158#define INIT___LIBC_THR_SETCANCELSTATE \ 4159 COMMON_INTERCEPT_FUNCTION(__libc_thr_setcancelstate) 4160#else 4161#define INIT___LIBC_MUTEX_LOCK 4162#define INIT___LIBC_MUTEX_UNLOCK 4163#define INIT___LIBC_THR_SETCANCELSTATE 4164#endif 4165 4166#if SANITIZER_INTERCEPT_GETMNTENT || SANITIZER_INTERCEPT_GETMNTENT_R 4167static void write_mntent(void *ctx, __sanitizer_mntent *mnt) { 4168 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt, sizeof(*mnt)); 4169 if (mnt->mnt_fsname) 4170 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_fsname, 4171 REAL(strlen)(mnt->mnt_fsname) + 1); 4172 if (mnt->mnt_dir) 4173 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir, 4174 REAL(strlen)(mnt->mnt_dir) + 1); 4175 if (mnt->mnt_type) 4176 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type, 4177 REAL(strlen)(mnt->mnt_type) + 1); 4178 if (mnt->mnt_opts) 4179 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts, 4180 REAL(strlen)(mnt->mnt_opts) + 1); 4181} 4182#endif 4183 4184#if SANITIZER_INTERCEPT_GETMNTENT 4185INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) { 4186 void *ctx; 4187 COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp); 4188 __sanitizer_mntent *res = REAL(getmntent)(fp); 4189 if (res) write_mntent(ctx, res); 4190 return res; 4191} 4192#define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent); 4193#else 4194#define INIT_GETMNTENT 4195#endif 4196 4197#if SANITIZER_INTERCEPT_GETMNTENT_R 4198INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp, 4199 __sanitizer_mntent *mntbuf, char *buf, int buflen) { 4200 void *ctx; 4201 COMMON_INTERCEPTOR_ENTER(ctx, getmntent_r, fp, mntbuf, buf, buflen); 4202 __sanitizer_mntent *res = REAL(getmntent_r)(fp, mntbuf, buf, buflen); 4203 if (res) write_mntent(ctx, res); 4204 return res; 4205} 4206#define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r); 4207#else 4208#define INIT_GETMNTENT_R 4209#endif 4210 4211#if SANITIZER_INTERCEPT_STATFS 4212INTERCEPTOR(int, statfs, char *path, void *buf) { 4213 void *ctx; 4214 COMMON_INTERCEPTOR_ENTER(ctx, statfs, path, buf); 4215 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 4216 // FIXME: under ASan the call below may write to freed memory and corrupt 4217 // its metadata. See 4218 // https://github.com/google/sanitizers/issues/321. 4219 int res = REAL(statfs)(path, buf); 4220 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz); 4221 return res; 4222} 4223INTERCEPTOR(int, fstatfs, int fd, void *buf) { 4224 void *ctx; 4225 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs, fd, buf); 4226 // FIXME: under ASan the call below may write to freed memory and corrupt 4227 // its metadata. See 4228 // https://github.com/google/sanitizers/issues/321. 4229 int res = REAL(fstatfs)(fd, buf); 4230 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz); 4231 return res; 4232} 4233#define INIT_STATFS \ 4234 COMMON_INTERCEPT_FUNCTION(statfs); \ 4235 COMMON_INTERCEPT_FUNCTION(fstatfs); 4236#else 4237#define INIT_STATFS 4238#endif 4239 4240#if SANITIZER_INTERCEPT_STATFS64 4241INTERCEPTOR(int, statfs64, char *path, void *buf) { 4242 void *ctx; 4243 COMMON_INTERCEPTOR_ENTER(ctx, statfs64, path, buf); 4244 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 4245 // FIXME: under ASan the call below may write to freed memory and corrupt 4246 // its metadata. See 4247 // https://github.com/google/sanitizers/issues/321. 4248 int res = REAL(statfs64)(path, buf); 4249 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz); 4250 return res; 4251} 4252INTERCEPTOR(int, fstatfs64, int fd, void *buf) { 4253 void *ctx; 4254 COMMON_INTERCEPTOR_ENTER(ctx, fstatfs64, fd, buf); 4255 // FIXME: under ASan the call below may write to freed memory and corrupt 4256 // its metadata. See 4257 // https://github.com/google/sanitizers/issues/321. 4258 int res = REAL(fstatfs64)(fd, buf); 4259 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz); 4260 return res; 4261} 4262#define INIT_STATFS64 \ 4263 COMMON_INTERCEPT_FUNCTION(statfs64); \ 4264 COMMON_INTERCEPT_FUNCTION(fstatfs64); 4265#else 4266#define INIT_STATFS64 4267#endif 4268 4269#if SANITIZER_INTERCEPT_STATVFS 4270INTERCEPTOR(int, statvfs, char *path, void *buf) { 4271 void *ctx; 4272 COMMON_INTERCEPTOR_ENTER(ctx, statvfs, path, buf); 4273 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 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(statvfs)(path, buf); 4278 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 4279 return res; 4280} 4281INTERCEPTOR(int, fstatvfs, int fd, void *buf) { 4282 void *ctx; 4283 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf); 4284 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 4285 // FIXME: under ASan the call below may write to freed memory and corrupt 4286 // its metadata. See 4287 // https://github.com/google/sanitizers/issues/321. 4288 int res = REAL(fstatvfs)(fd, buf); 4289 if (!res) { 4290 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 4291 if (fd >= 0) 4292 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 4293 } 4294 return res; 4295} 4296#define INIT_STATVFS \ 4297 COMMON_INTERCEPT_FUNCTION(statvfs); \ 4298 COMMON_INTERCEPT_FUNCTION(fstatvfs); 4299#else 4300#define INIT_STATVFS 4301#endif 4302 4303#if SANITIZER_INTERCEPT_STATVFS64 4304INTERCEPTOR(int, statvfs64, char *path, void *buf) { 4305 void *ctx; 4306 COMMON_INTERCEPTOR_ENTER(ctx, statvfs64, path, buf); 4307 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 4308 // FIXME: under ASan the call below may write to freed memory and corrupt 4309 // its metadata. See 4310 // https://github.com/google/sanitizers/issues/321. 4311 int res = REAL(statvfs64)(path, buf); 4312 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz); 4313 return res; 4314} 4315INTERCEPTOR(int, fstatvfs64, int fd, void *buf) { 4316 void *ctx; 4317 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs64, fd, buf); 4318 // FIXME: under ASan the call below may write to freed memory and corrupt 4319 // its metadata. See 4320 // https://github.com/google/sanitizers/issues/321. 4321 int res = REAL(fstatvfs64)(fd, buf); 4322 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz); 4323 return res; 4324} 4325#define INIT_STATVFS64 \ 4326 COMMON_INTERCEPT_FUNCTION(statvfs64); \ 4327 COMMON_INTERCEPT_FUNCTION(fstatvfs64); 4328#else 4329#define INIT_STATVFS64 4330#endif 4331 4332#if SANITIZER_INTERCEPT_INITGROUPS 4333INTERCEPTOR(int, initgroups, char *user, u32 group) { 4334 void *ctx; 4335 COMMON_INTERCEPTOR_ENTER(ctx, initgroups, user, group); 4336 if (user) COMMON_INTERCEPTOR_READ_RANGE(ctx, user, REAL(strlen)(user) + 1); 4337 int res = REAL(initgroups)(user, group); 4338 return res; 4339} 4340#define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups); 4341#else 4342#define INIT_INITGROUPS 4343#endif 4344 4345#if SANITIZER_INTERCEPT_ETHER_NTOA_ATON 4346INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) { 4347 void *ctx; 4348 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa, addr); 4349 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); 4350 char *res = REAL(ether_ntoa)(addr); 4351 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 4352 return res; 4353} 4354INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) { 4355 void *ctx; 4356 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton, buf); 4357 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, REAL(strlen)(buf) + 1); 4358 __sanitizer_ether_addr *res = REAL(ether_aton)(buf); 4359 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, sizeof(*res)); 4360 return res; 4361} 4362#define INIT_ETHER_NTOA_ATON \ 4363 COMMON_INTERCEPT_FUNCTION(ether_ntoa); \ 4364 COMMON_INTERCEPT_FUNCTION(ether_aton); 4365#else 4366#define INIT_ETHER_NTOA_ATON 4367#endif 4368 4369#if SANITIZER_INTERCEPT_ETHER_HOST 4370INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) { 4371 void *ctx; 4372 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntohost, hostname, addr); 4373 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); 4374 // FIXME: under ASan the call below may write to freed memory and corrupt 4375 // its metadata. See 4376 // https://github.com/google/sanitizers/issues/321. 4377 int res = REAL(ether_ntohost)(hostname, addr); 4378 if (!res && hostname) 4379 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1); 4380 return res; 4381} 4382INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) { 4383 void *ctx; 4384 COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr); 4385 if (hostname) 4386 COMMON_INTERCEPTOR_READ_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1); 4387 // FIXME: under ASan the call below may write to freed memory and corrupt 4388 // its metadata. See 4389 // https://github.com/google/sanitizers/issues/321. 4390 int res = REAL(ether_hostton)(hostname, addr); 4391 if (!res && addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); 4392 return res; 4393} 4394INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr, 4395 char *hostname) { 4396 void *ctx; 4397 COMMON_INTERCEPTOR_ENTER(ctx, ether_line, line, addr, hostname); 4398 if (line) COMMON_INTERCEPTOR_READ_RANGE(ctx, line, REAL(strlen)(line) + 1); 4399 // FIXME: under ASan the call below may write to freed memory and corrupt 4400 // its metadata. See 4401 // https://github.com/google/sanitizers/issues/321. 4402 int res = REAL(ether_line)(line, addr, hostname); 4403 if (!res) { 4404 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); 4405 if (hostname) 4406 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1); 4407 } 4408 return res; 4409} 4410#define INIT_ETHER_HOST \ 4411 COMMON_INTERCEPT_FUNCTION(ether_ntohost); \ 4412 COMMON_INTERCEPT_FUNCTION(ether_hostton); \ 4413 COMMON_INTERCEPT_FUNCTION(ether_line); 4414#else 4415#define INIT_ETHER_HOST 4416#endif 4417 4418#if SANITIZER_INTERCEPT_ETHER_R 4419INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) { 4420 void *ctx; 4421 COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa_r, addr, buf); 4422 if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); 4423 // FIXME: under ASan the call below may write to freed memory and corrupt 4424 // its metadata. See 4425 // https://github.com/google/sanitizers/issues/321. 4426 char *res = REAL(ether_ntoa_r)(addr, buf); 4427 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 4428 return res; 4429} 4430INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf, 4431 __sanitizer_ether_addr *addr) { 4432 void *ctx; 4433 COMMON_INTERCEPTOR_ENTER(ctx, ether_aton_r, buf, addr); 4434 if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, REAL(strlen)(buf) + 1); 4435 // FIXME: under ASan the call below may write to freed memory and corrupt 4436 // its metadata. See 4437 // https://github.com/google/sanitizers/issues/321. 4438 __sanitizer_ether_addr *res = REAL(ether_aton_r)(buf, addr); 4439 if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(*res)); 4440 return res; 4441} 4442#define INIT_ETHER_R \ 4443 COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \ 4444 COMMON_INTERCEPT_FUNCTION(ether_aton_r); 4445#else 4446#define INIT_ETHER_R 4447#endif 4448 4449#if SANITIZER_INTERCEPT_SHMCTL 4450INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) { 4451 void *ctx; 4452 COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf); 4453 // FIXME: under ASan the call below may write to freed memory and corrupt 4454 // its metadata. See 4455 // https://github.com/google/sanitizers/issues/321. 4456 int res = REAL(shmctl)(shmid, cmd, buf); 4457 if (res >= 0) { 4458 unsigned sz = 0; 4459 if (cmd == shmctl_ipc_stat || cmd == shmctl_shm_stat) 4460 sz = sizeof(__sanitizer_shmid_ds); 4461 else if (cmd == shmctl_ipc_info) 4462 sz = struct_shminfo_sz; 4463 else if (cmd == shmctl_shm_info) 4464 sz = struct_shm_info_sz; 4465 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz); 4466 } 4467 return res; 4468} 4469#define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl); 4470#else 4471#define INIT_SHMCTL 4472#endif 4473 4474#if SANITIZER_INTERCEPT_RANDOM_R 4475INTERCEPTOR(int, random_r, void *buf, u32 *result) { 4476 void *ctx; 4477 COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result); 4478 // FIXME: under ASan the call below may write to freed memory and corrupt 4479 // its metadata. See 4480 // https://github.com/google/sanitizers/issues/321. 4481 int res = REAL(random_r)(buf, result); 4482 if (!res && result) 4483 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 4484 return res; 4485} 4486#define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r); 4487#else 4488#define INIT_RANDOM_R 4489#endif 4490 4491// FIXME: under ASan the REAL() call below may write to freed memory and corrupt 4492// its metadata. See 4493// https://github.com/google/sanitizers/issues/321. 4494#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET || \ 4495 SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED || \ 4496 SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSSCHED || \ 4497 SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GET || \ 4498 SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GET || \ 4499 SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GET || \ 4500 SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GET 4501#define INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(fn, sz) \ 4502 INTERCEPTOR(int, fn, void *attr, void *r) { \ 4503 void *ctx; \ 4504 COMMON_INTERCEPTOR_ENTER(ctx, fn, attr, r); \ 4505 int res = REAL(fn)(attr, r); \ 4506 if (!res && r) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, r, sz); \ 4507 return res; \ 4508 } 4509#define INTERCEPTOR_PTHREAD_ATTR_GET(what, sz) \ 4510 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_attr_get##what, sz) 4511#define INTERCEPTOR_PTHREAD_MUTEXATTR_GET(what, sz) \ 4512 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_mutexattr_get##what, sz) 4513#define INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(what, sz) \ 4514 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_rwlockattr_get##what, sz) 4515#define INTERCEPTOR_PTHREAD_CONDATTR_GET(what, sz) \ 4516 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_condattr_get##what, sz) 4517#define INTERCEPTOR_PTHREAD_BARRIERATTR_GET(what, sz) \ 4518 INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_barrierattr_get##what, sz) 4519#endif 4520 4521#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET 4522INTERCEPTOR_PTHREAD_ATTR_GET(detachstate, sizeof(int)) 4523INTERCEPTOR_PTHREAD_ATTR_GET(guardsize, sizeof(SIZE_T)) 4524INTERCEPTOR_PTHREAD_ATTR_GET(scope, sizeof(int)) 4525INTERCEPTOR_PTHREAD_ATTR_GET(stacksize, sizeof(SIZE_T)) 4526INTERCEPTOR(int, pthread_attr_getstack, void *attr, void **addr, SIZE_T *size) { 4527 void *ctx; 4528 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size); 4529 // FIXME: under ASan the call below may write to freed memory and corrupt 4530 // its metadata. See 4531 // https://github.com/google/sanitizers/issues/321. 4532 int res = REAL(pthread_attr_getstack)(attr, addr, size); 4533 if (!res) { 4534 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); 4535 if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size)); 4536 } 4537 return res; 4538} 4539 4540// We may need to call the real pthread_attr_getstack from the run-time 4541// in sanitizer_common, but we don't want to include the interception headers 4542// there. So, just define this function here. 4543namespace __sanitizer { 4544extern "C" { 4545int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) { 4546 return REAL(pthread_attr_getstack)(attr, addr, size); 4547} 4548} // extern "C" 4549} // namespace __sanitizer 4550 4551#define INIT_PTHREAD_ATTR_GET \ 4552 COMMON_INTERCEPT_FUNCTION(pthread_attr_getdetachstate); \ 4553 COMMON_INTERCEPT_FUNCTION(pthread_attr_getguardsize); \ 4554 COMMON_INTERCEPT_FUNCTION(pthread_attr_getscope); \ 4555 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstacksize); \ 4556 COMMON_INTERCEPT_FUNCTION(pthread_attr_getstack); 4557#else 4558#define INIT_PTHREAD_ATTR_GET 4559#endif 4560 4561#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED 4562INTERCEPTOR_PTHREAD_ATTR_GET(schedparam, struct_sched_param_sz) 4563INTERCEPTOR_PTHREAD_ATTR_GET(schedpolicy, sizeof(int)) 4564 4565#define INIT_PTHREAD_ATTR_GET_SCHED \ 4566 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedparam); \ 4567 COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedpolicy); 4568#else 4569#define INIT_PTHREAD_ATTR_GET_SCHED 4570#endif 4571 4572#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED 4573INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int)) 4574 4575#define INIT_PTHREAD_ATTR_GETINHERITSCHED \ 4576 COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched); 4577#else 4578#define INIT_PTHREAD_ATTR_GETINHERITSCHED 4579#endif 4580 4581#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP 4582INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize, 4583 void *cpuset) { 4584 void *ctx; 4585 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize, 4586 cpuset); 4587 // FIXME: under ASan the call below may write to freed memory and corrupt 4588 // its metadata. See 4589 // https://github.com/google/sanitizers/issues/321. 4590 int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset); 4591 if (!res && cpusetsize && cpuset) 4592 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize); 4593 return res; 4594} 4595 4596#define INIT_PTHREAD_ATTR_GETAFFINITY_NP \ 4597 COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np); 4598#else 4599#define INIT_PTHREAD_ATTR_GETAFFINITY_NP 4600#endif 4601 4602#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPSHARED 4603INTERCEPTOR_PTHREAD_MUTEXATTR_GET(pshared, sizeof(int)) 4604#define INIT_PTHREAD_MUTEXATTR_GETPSHARED \ 4605 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getpshared); 4606#else 4607#define INIT_PTHREAD_MUTEXATTR_GETPSHARED 4608#endif 4609 4610#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE 4611INTERCEPTOR_PTHREAD_MUTEXATTR_GET(type, sizeof(int)) 4612#define INIT_PTHREAD_MUTEXATTR_GETTYPE \ 4613 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_gettype); 4614#else 4615#define INIT_PTHREAD_MUTEXATTR_GETTYPE 4616#endif 4617 4618#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPROTOCOL 4619INTERCEPTOR_PTHREAD_MUTEXATTR_GET(protocol, sizeof(int)) 4620#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL \ 4621 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprotocol); 4622#else 4623#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL 4624#endif 4625 4626#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPRIOCEILING 4627INTERCEPTOR_PTHREAD_MUTEXATTR_GET(prioceiling, sizeof(int)) 4628#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING \ 4629 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprioceiling); 4630#else 4631#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING 4632#endif 4633 4634#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST 4635INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust, sizeof(int)) 4636#define INIT_PTHREAD_MUTEXATTR_GETROBUST \ 4637 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust); 4638#else 4639#define INIT_PTHREAD_MUTEXATTR_GETROBUST 4640#endif 4641 4642#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST_NP 4643INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust_np, sizeof(int)) 4644#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP \ 4645 COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust_np); 4646#else 4647#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP 4648#endif 4649 4650#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETPSHARED 4651INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(pshared, sizeof(int)) 4652#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED \ 4653 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getpshared); 4654#else 4655#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED 4656#endif 4657 4658#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETKIND_NP 4659INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(kind_np, sizeof(int)) 4660#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP \ 4661 COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getkind_np); 4662#else 4663#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP 4664#endif 4665 4666#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETPSHARED 4667INTERCEPTOR_PTHREAD_CONDATTR_GET(pshared, sizeof(int)) 4668#define INIT_PTHREAD_CONDATTR_GETPSHARED \ 4669 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getpshared); 4670#else 4671#define INIT_PTHREAD_CONDATTR_GETPSHARED 4672#endif 4673 4674#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETCLOCK 4675INTERCEPTOR_PTHREAD_CONDATTR_GET(clock, sizeof(int)) 4676#define INIT_PTHREAD_CONDATTR_GETCLOCK \ 4677 COMMON_INTERCEPT_FUNCTION(pthread_condattr_getclock); 4678#else 4679#define INIT_PTHREAD_CONDATTR_GETCLOCK 4680#endif 4681 4682#if SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED 4683INTERCEPTOR_PTHREAD_BARRIERATTR_GET(pshared, sizeof(int)) // !mac !android 4684#define INIT_PTHREAD_BARRIERATTR_GETPSHARED \ 4685 COMMON_INTERCEPT_FUNCTION(pthread_barrierattr_getpshared); 4686#else 4687#define INIT_PTHREAD_BARRIERATTR_GETPSHARED 4688#endif 4689 4690#if SANITIZER_INTERCEPT_TMPNAM 4691INTERCEPTOR(char *, tmpnam, char *s) { 4692 void *ctx; 4693 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s); 4694 char *res = REAL(tmpnam)(s); 4695 if (res) { 4696 if (s) 4697 // FIXME: under ASan the call below may write to freed memory and corrupt 4698 // its metadata. See 4699 // https://github.com/google/sanitizers/issues/321. 4700 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, REAL(strlen)(s) + 1); 4701 else 4702 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 4703 } 4704 return res; 4705} 4706#define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam); 4707#else 4708#define INIT_TMPNAM 4709#endif 4710 4711#if SANITIZER_INTERCEPT_TMPNAM_R 4712INTERCEPTOR(char *, tmpnam_r, char *s) { 4713 void *ctx; 4714 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam_r, s); 4715 // FIXME: under ASan the call below may write to freed memory and corrupt 4716 // its metadata. See 4717 // https://github.com/google/sanitizers/issues/321. 4718 char *res = REAL(tmpnam_r)(s); 4719 if (res && s) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, REAL(strlen)(s) + 1); 4720 return res; 4721} 4722#define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r); 4723#else 4724#define INIT_TMPNAM_R 4725#endif 4726 4727#if SANITIZER_INTERCEPT_TTYNAME_R 4728INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) { 4729 void *ctx; 4730 COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize); 4731 int res = REAL(ttyname_r)(fd, name, namesize); 4732 if (res == 0) 4733 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1); 4734 return res; 4735} 4736#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r); 4737#else 4738#define INIT_TTYNAME_R 4739#endif 4740 4741#if SANITIZER_INTERCEPT_TEMPNAM 4742INTERCEPTOR(char *, tempnam, char *dir, char *pfx) { 4743 void *ctx; 4744 COMMON_INTERCEPTOR_ENTER(ctx, tempnam, dir, pfx); 4745 if (dir) COMMON_INTERCEPTOR_READ_RANGE(ctx, dir, REAL(strlen)(dir) + 1); 4746 if (pfx) COMMON_INTERCEPTOR_READ_RANGE(ctx, pfx, REAL(strlen)(pfx) + 1); 4747 char *res = REAL(tempnam)(dir, pfx); 4748 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 4749 return res; 4750} 4751#define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam); 4752#else 4753#define INIT_TEMPNAM 4754#endif 4755 4756#if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && !SANITIZER_NETBSD 4757INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) { 4758 void *ctx; 4759 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name); 4760 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0); 4761 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name); 4762 return REAL(pthread_setname_np)(thread, name); 4763} 4764#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np); 4765#elif SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && SANITIZER_NETBSD 4766INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name, void *arg) { 4767 void *ctx; 4768 char newname[32]; // PTHREAD_MAX_NAMELEN_NP=32 4769 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name, arg); 4770 COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0); 4771 internal_snprintf(newname, sizeof(newname), name, arg); 4772 COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, newname); 4773 return REAL(pthread_setname_np)(thread, name, arg); 4774} 4775#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np); 4776#else 4777#define INIT_PTHREAD_SETNAME_NP 4778#endif 4779 4780#if SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP 4781INTERCEPTOR(int, pthread_getname_np, uptr thread, char *name, SIZE_T len) { 4782 void *ctx; 4783 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getname_np, thread, name, len); 4784 int res = REAL(pthread_getname_np)(thread, name, len); 4785 if (!res) 4786 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strnlen(name, len) + 1); 4787 return res; 4788} 4789#define INIT_PTHREAD_GETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_getname_np); 4790#else 4791#define INIT_PTHREAD_GETNAME_NP 4792#endif 4793 4794#if SANITIZER_INTERCEPT_SINCOS 4795INTERCEPTOR(void, sincos, double x, double *sin, double *cos) { 4796 void *ctx; 4797 COMMON_INTERCEPTOR_ENTER(ctx, sincos, x, sin, cos); 4798 // FIXME: under ASan the call below may write to freed memory and corrupt 4799 // its metadata. See 4800 // https://github.com/google/sanitizers/issues/321. 4801 REAL(sincos)(x, sin, cos); 4802 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); 4803 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); 4804} 4805INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) { 4806 void *ctx; 4807 COMMON_INTERCEPTOR_ENTER(ctx, sincosf, x, sin, cos); 4808 // FIXME: under ASan the call below may write to freed memory and corrupt 4809 // its metadata. See 4810 // https://github.com/google/sanitizers/issues/321. 4811 REAL(sincosf)(x, sin, cos); 4812 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); 4813 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); 4814} 4815INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) { 4816 void *ctx; 4817 COMMON_INTERCEPTOR_ENTER(ctx, sincosl, x, sin, cos); 4818 // FIXME: under ASan the call below may write to freed memory and corrupt 4819 // its metadata. See 4820 // https://github.com/google/sanitizers/issues/321. 4821 REAL(sincosl)(x, sin, cos); 4822 if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); 4823 if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); 4824} 4825#define INIT_SINCOS \ 4826 COMMON_INTERCEPT_FUNCTION(sincos); \ 4827 COMMON_INTERCEPT_FUNCTION(sincosf); \ 4828 COMMON_INTERCEPT_FUNCTION_LDBL(sincosl); 4829#else 4830#define INIT_SINCOS 4831#endif 4832 4833#if SANITIZER_INTERCEPT_REMQUO 4834INTERCEPTOR(double, remquo, double x, double y, int *quo) { 4835 void *ctx; 4836 COMMON_INTERCEPTOR_ENTER(ctx, remquo, x, y, quo); 4837 // FIXME: under ASan the call below may write to freed memory and corrupt 4838 // its metadata. See 4839 // https://github.com/google/sanitizers/issues/321. 4840 double res = REAL(remquo)(x, y, quo); 4841 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); 4842 return res; 4843} 4844INTERCEPTOR(float, remquof, float x, float y, int *quo) { 4845 void *ctx; 4846 COMMON_INTERCEPTOR_ENTER(ctx, remquof, x, y, quo); 4847 // FIXME: under ASan the call below may write to freed memory and corrupt 4848 // its metadata. See 4849 // https://github.com/google/sanitizers/issues/321. 4850 float res = REAL(remquof)(x, y, quo); 4851 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); 4852 return res; 4853} 4854#define INIT_REMQUO \ 4855 COMMON_INTERCEPT_FUNCTION(remquo); \ 4856 COMMON_INTERCEPT_FUNCTION(remquof); 4857#else 4858#define INIT_REMQUO 4859#endif 4860 4861#if SANITIZER_INTERCEPT_REMQUOL 4862INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) { 4863 void *ctx; 4864 COMMON_INTERCEPTOR_ENTER(ctx, remquol, x, y, quo); 4865 // FIXME: under ASan the call below may write to freed memory and corrupt 4866 // its metadata. See 4867 // https://github.com/google/sanitizers/issues/321. 4868 long double res = REAL(remquol)(x, y, quo); 4869 if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); 4870 return res; 4871} 4872#define INIT_REMQUOL \ 4873 COMMON_INTERCEPT_FUNCTION_LDBL(remquol); 4874#else 4875#define INIT_REMQUOL 4876#endif 4877 4878#if SANITIZER_INTERCEPT_LGAMMA 4879extern int signgam; 4880INTERCEPTOR(double, lgamma, double x) { 4881 void *ctx; 4882 COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x); 4883 double res = REAL(lgamma)(x); 4884 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); 4885 return res; 4886} 4887INTERCEPTOR(float, lgammaf, float x) { 4888 void *ctx; 4889 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x); 4890 float res = REAL(lgammaf)(x); 4891 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); 4892 return res; 4893} 4894#define INIT_LGAMMA \ 4895 COMMON_INTERCEPT_FUNCTION(lgamma); \ 4896 COMMON_INTERCEPT_FUNCTION(lgammaf); 4897#else 4898#define INIT_LGAMMA 4899#endif 4900 4901#if SANITIZER_INTERCEPT_LGAMMAL 4902INTERCEPTOR(long double, lgammal, long double x) { 4903 void *ctx; 4904 COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x); 4905 long double res = REAL(lgammal)(x); 4906 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); 4907 return res; 4908} 4909#define INIT_LGAMMAL \ 4910 COMMON_INTERCEPT_FUNCTION_LDBL(lgammal); 4911#else 4912#define INIT_LGAMMAL 4913#endif 4914 4915#if SANITIZER_INTERCEPT_LGAMMA_R 4916INTERCEPTOR(double, lgamma_r, double x, int *signp) { 4917 void *ctx; 4918 COMMON_INTERCEPTOR_ENTER(ctx, lgamma_r, x, signp); 4919 // FIXME: under ASan the call below may write to freed memory and corrupt 4920 // its metadata. See 4921 // https://github.com/google/sanitizers/issues/321. 4922 double res = REAL(lgamma_r)(x, signp); 4923 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); 4924 return res; 4925} 4926INTERCEPTOR(float, lgammaf_r, float x, int *signp) { 4927 void *ctx; 4928 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf_r, x, signp); 4929 // FIXME: under ASan the call below may write to freed memory and corrupt 4930 // its metadata. See 4931 // https://github.com/google/sanitizers/issues/321. 4932 float res = REAL(lgammaf_r)(x, signp); 4933 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); 4934 return res; 4935} 4936#define INIT_LGAMMA_R \ 4937 COMMON_INTERCEPT_FUNCTION(lgamma_r); \ 4938 COMMON_INTERCEPT_FUNCTION(lgammaf_r); 4939#else 4940#define INIT_LGAMMA_R 4941#endif 4942 4943#if SANITIZER_INTERCEPT_LGAMMAL_R 4944INTERCEPTOR(long double, lgammal_r, long double x, int *signp) { 4945 void *ctx; 4946 COMMON_INTERCEPTOR_ENTER(ctx, lgammal_r, x, signp); 4947 // FIXME: under ASan the call below may write to freed memory and corrupt 4948 // its metadata. See 4949 // https://github.com/google/sanitizers/issues/321. 4950 long double res = REAL(lgammal_r)(x, signp); 4951 if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); 4952 return res; 4953} 4954#define INIT_LGAMMAL_R COMMON_INTERCEPT_FUNCTION_LDBL(lgammal_r); 4955#else 4956#define INIT_LGAMMAL_R 4957#endif 4958 4959#if SANITIZER_INTERCEPT_DRAND48_R 4960INTERCEPTOR(int, drand48_r, void *buffer, double *result) { 4961 void *ctx; 4962 COMMON_INTERCEPTOR_ENTER(ctx, drand48_r, buffer, result); 4963 // FIXME: under ASan the call below may write to freed memory and corrupt 4964 // its metadata. See 4965 // https://github.com/google/sanitizers/issues/321. 4966 int res = REAL(drand48_r)(buffer, result); 4967 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 4968 return res; 4969} 4970INTERCEPTOR(int, lrand48_r, void *buffer, long *result) { 4971 void *ctx; 4972 COMMON_INTERCEPTOR_ENTER(ctx, lrand48_r, buffer, result); 4973 // FIXME: under ASan the call below may write to freed memory and corrupt 4974 // its metadata. See 4975 // https://github.com/google/sanitizers/issues/321. 4976 int res = REAL(lrand48_r)(buffer, result); 4977 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); 4978 return res; 4979} 4980#define INIT_DRAND48_R \ 4981 COMMON_INTERCEPT_FUNCTION(drand48_r); \ 4982 COMMON_INTERCEPT_FUNCTION(lrand48_r); 4983#else 4984#define INIT_DRAND48_R 4985#endif 4986 4987#if SANITIZER_INTERCEPT_RAND_R 4988INTERCEPTOR(int, rand_r, unsigned *seedp) { 4989 void *ctx; 4990 COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp); 4991 COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp)); 4992 return REAL(rand_r)(seedp); 4993} 4994#define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r); 4995#else 4996#define INIT_RAND_R 4997#endif 4998 4999#if SANITIZER_INTERCEPT_GETLINE 5000INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) { 5001 void *ctx; 5002 COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream); 5003 // FIXME: under ASan the call below may write to freed memory and corrupt 5004 // its metadata. See 5005 // https://github.com/google/sanitizers/issues/321. 5006 SSIZE_T res = REAL(getline)(lineptr, n, stream); 5007 if (res > 0) { 5008 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); 5009 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 5010 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); 5011 } 5012 return res; 5013} 5014 5015// FIXME: under ASan the call below may write to freed memory and corrupt its 5016// metadata. See 5017// https://github.com/google/sanitizers/issues/321. 5018#define GETDELIM_INTERCEPTOR_IMPL(vname) \ 5019 { \ 5020 void *ctx; \ 5021 COMMON_INTERCEPTOR_ENTER(ctx, vname, lineptr, n, delim, stream); \ 5022 SSIZE_T res = REAL(vname)(lineptr, n, delim, stream); \ 5023 if (res > 0) { \ 5024 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); \ 5025 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); \ 5026 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); \ 5027 } \ 5028 return res; \ 5029 } 5030 5031INTERCEPTOR(SSIZE_T, __getdelim, char **lineptr, SIZE_T *n, int delim, 5032 void *stream) 5033GETDELIM_INTERCEPTOR_IMPL(__getdelim) 5034 5035// There's no __getdelim() on FreeBSD so we supply the getdelim() interceptor 5036// with its own body. 5037INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim, 5038 void *stream) 5039GETDELIM_INTERCEPTOR_IMPL(getdelim) 5040 5041#define INIT_GETLINE \ 5042 COMMON_INTERCEPT_FUNCTION(getline); \ 5043 COMMON_INTERCEPT_FUNCTION(__getdelim); \ 5044 COMMON_INTERCEPT_FUNCTION(getdelim); 5045#else 5046#define INIT_GETLINE 5047#endif 5048 5049#if SANITIZER_INTERCEPT_ICONV 5050INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft, 5051 char **outbuf, SIZE_T *outbytesleft) { 5052 void *ctx; 5053 COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf, 5054 outbytesleft); 5055 if (inbytesleft) 5056 COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft)); 5057 if (inbuf && inbytesleft) 5058 COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft); 5059 if (outbytesleft) 5060 COMMON_INTERCEPTOR_READ_RANGE(ctx, outbytesleft, sizeof(*outbytesleft)); 5061 void *outbuf_orig = outbuf ? *outbuf : nullptr; 5062 // FIXME: under ASan the call below may write to freed memory and corrupt 5063 // its metadata. See 5064 // https://github.com/google/sanitizers/issues/321. 5065 SIZE_T res = REAL(iconv)(cd, inbuf, inbytesleft, outbuf, outbytesleft); 5066 if (outbuf && *outbuf > outbuf_orig) { 5067 SIZE_T sz = (char *)*outbuf - (char *)outbuf_orig; 5068 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, outbuf_orig, sz); 5069 } 5070 return res; 5071} 5072#define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv); 5073#else 5074#define INIT_ICONV 5075#endif 5076 5077#if SANITIZER_INTERCEPT_TIMES 5078INTERCEPTOR(__sanitizer_clock_t, times, void *tms) { 5079 void *ctx; 5080 COMMON_INTERCEPTOR_ENTER(ctx, times, tms); 5081 // FIXME: under ASan the call below may write to freed memory and corrupt 5082 // its metadata. See 5083 // https://github.com/google/sanitizers/issues/321. 5084 __sanitizer_clock_t res = REAL(times)(tms); 5085 if (res != (__sanitizer_clock_t)-1 && tms) 5086 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tms, struct_tms_sz); 5087 return res; 5088} 5089#define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times); 5090#else 5091#define INIT_TIMES 5092#endif 5093 5094#if SANITIZER_INTERCEPT_TLS_GET_ADDR 5095#if !SANITIZER_S390 5096#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_addr) 5097// If you see any crashes around this functions, there are 2 known issues with 5098// it: 1. __tls_get_addr can be called with mis-aligned stack due to: 5099// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 5100// 2. It can be called recursively if sanitizer code uses __tls_get_addr 5101// to access thread local variables (it should not happen normally, 5102// because sanitizers use initial-exec tls model). 5103INTERCEPTOR(void *, __tls_get_addr, void *arg) { 5104 void *ctx; 5105 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr, arg); 5106 void *res = REAL(__tls_get_addr)(arg); 5107 uptr tls_begin, tls_end; 5108 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end); 5109 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, res, tls_begin, tls_end); 5110 if (dtv) { 5111 // New DTLS block has been allocated. 5112 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size); 5113 } 5114 return res; 5115} 5116#if SANITIZER_PPC 5117// On PowerPC, we also need to intercept __tls_get_addr_opt, which has 5118// mostly the same semantics as __tls_get_addr, but its presence enables 5119// some optimizations in linker (which are safe to ignore here). 5120extern "C" __attribute__((alias("__interceptor___tls_get_addr"), 5121 visibility("default"))) 5122void *__tls_get_addr_opt(void *arg); 5123#endif 5124#else // SANITIZER_S390 5125// On s390, we have to intercept two functions here: 5126// - __tls_get_addr_internal, which is a glibc-internal function that is like 5127// the usual __tls_get_addr, but returns a TP-relative offset instead of 5128// a proper pointer. It is used by dlsym for TLS symbols. 5129// - __tls_get_offset, which is like the above, but also takes a GOT-relative 5130// descriptor offset as an argument instead of a pointer. GOT address 5131// is passed in r12, so it's necessary to write it in assembly. This is 5132// the function used by the compiler. 5133extern "C" uptr __tls_get_offset_wrapper(void *arg, uptr (*fn)(void *arg)); 5134#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_offset) 5135DEFINE_REAL(uptr, __tls_get_offset, void *arg) 5136extern "C" uptr __tls_get_offset(void *arg); 5137extern "C" uptr __interceptor___tls_get_offset(void *arg); 5138INTERCEPTOR(uptr, __tls_get_addr_internal, void *arg) { 5139 void *ctx; 5140 COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr_internal, arg); 5141 uptr res = __tls_get_offset_wrapper(arg, REAL(__tls_get_offset)); 5142 uptr tp = reinterpret_cast<uptr>(__builtin_thread_pointer()); 5143 void *ptr = reinterpret_cast<void *>(res + tp); 5144 uptr tls_begin, tls_end; 5145 COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end); 5146 DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, ptr, tls_begin, tls_end); 5147 if (dtv) { 5148 // New DTLS block has been allocated. 5149 COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size); 5150 } 5151 return res; 5152} 5153// We need a hidden symbol aliasing the above, so that we can jump 5154// directly to it from the assembly below. 5155extern "C" __attribute__((alias("__interceptor___tls_get_addr_internal"), 5156 visibility("hidden"))) 5157uptr __tls_get_addr_hidden(void *arg); 5158// Now carefully intercept __tls_get_offset. 5159asm( 5160 ".text\n" 5161// The __intercept_ version has to exist, so that gen_dynamic_list.py 5162// exports our symbol. 5163 ".weak __tls_get_offset\n" 5164 ".type __tls_get_offset, @function\n" 5165 "__tls_get_offset:\n" 5166 ".global __interceptor___tls_get_offset\n" 5167 ".type __interceptor___tls_get_offset, @function\n" 5168 "__interceptor___tls_get_offset:\n" 5169#ifdef __s390x__ 5170 "la %r2, 0(%r2,%r12)\n" 5171 "jg __tls_get_addr_hidden\n" 5172#else 5173 "basr %r3,0\n" 5174 "0: la %r2,0(%r2,%r12)\n" 5175 "l %r4,1f-0b(%r3)\n" 5176 "b 0(%r4,%r3)\n" 5177 "1: .long __tls_get_addr_hidden - 0b\n" 5178#endif 5179 ".size __interceptor___tls_get_offset, .-__interceptor___tls_get_offset\n" 5180// Assembly wrapper to call REAL(__tls_get_offset)(arg) 5181 ".type __tls_get_offset_wrapper, @function\n" 5182 "__tls_get_offset_wrapper:\n" 5183#ifdef __s390x__ 5184 "sgr %r2,%r12\n" 5185#else 5186 "sr %r2,%r12\n" 5187#endif 5188 "br %r3\n" 5189 ".size __tls_get_offset_wrapper, .-__tls_get_offset_wrapper\n" 5190); 5191#endif // SANITIZER_S390 5192#else 5193#define INIT_TLS_GET_ADDR 5194#endif 5195 5196#if SANITIZER_INTERCEPT_LISTXATTR 5197INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) { 5198 void *ctx; 5199 COMMON_INTERCEPTOR_ENTER(ctx, listxattr, path, list, size); 5200 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5201 // FIXME: under ASan the call below may write to freed memory and corrupt 5202 // its metadata. See 5203 // https://github.com/google/sanitizers/issues/321. 5204 SSIZE_T res = REAL(listxattr)(path, list, size); 5205 // Here and below, size == 0 is a special case where nothing is written to the 5206 // buffer, and res contains the desired buffer size. 5207 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); 5208 return res; 5209} 5210INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) { 5211 void *ctx; 5212 COMMON_INTERCEPTOR_ENTER(ctx, llistxattr, path, list, size); 5213 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5214 // FIXME: under ASan the call below may write to freed memory and corrupt 5215 // its metadata. See 5216 // https://github.com/google/sanitizers/issues/321. 5217 SSIZE_T res = REAL(llistxattr)(path, list, size); 5218 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); 5219 return res; 5220} 5221INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) { 5222 void *ctx; 5223 COMMON_INTERCEPTOR_ENTER(ctx, flistxattr, fd, list, size); 5224 // FIXME: under ASan the call below may write to freed memory and corrupt 5225 // its metadata. See 5226 // https://github.com/google/sanitizers/issues/321. 5227 SSIZE_T res = REAL(flistxattr)(fd, list, size); 5228 if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); 5229 return res; 5230} 5231#define INIT_LISTXATTR \ 5232 COMMON_INTERCEPT_FUNCTION(listxattr); \ 5233 COMMON_INTERCEPT_FUNCTION(llistxattr); \ 5234 COMMON_INTERCEPT_FUNCTION(flistxattr); 5235#else 5236#define INIT_LISTXATTR 5237#endif 5238 5239#if SANITIZER_INTERCEPT_GETXATTR 5240INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value, 5241 SIZE_T size) { 5242 void *ctx; 5243 COMMON_INTERCEPTOR_ENTER(ctx, getxattr, path, name, value, size); 5244 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5245 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 5246 // FIXME: under ASan the call below may write to freed memory and corrupt 5247 // its metadata. See 5248 // https://github.com/google/sanitizers/issues/321. 5249 SSIZE_T res = REAL(getxattr)(path, name, value, size); 5250 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); 5251 return res; 5252} 5253INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value, 5254 SIZE_T size) { 5255 void *ctx; 5256 COMMON_INTERCEPTOR_ENTER(ctx, lgetxattr, path, name, value, size); 5257 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5258 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 5259 // FIXME: under ASan the call below may write to freed memory and corrupt 5260 // its metadata. See 5261 // https://github.com/google/sanitizers/issues/321. 5262 SSIZE_T res = REAL(lgetxattr)(path, name, value, size); 5263 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); 5264 return res; 5265} 5266INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value, 5267 SIZE_T size) { 5268 void *ctx; 5269 COMMON_INTERCEPTOR_ENTER(ctx, fgetxattr, fd, name, value, size); 5270 if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 5271 // FIXME: under ASan the call below may write to freed memory and corrupt 5272 // its metadata. See 5273 // https://github.com/google/sanitizers/issues/321. 5274 SSIZE_T res = REAL(fgetxattr)(fd, name, value, size); 5275 if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); 5276 return res; 5277} 5278#define INIT_GETXATTR \ 5279 COMMON_INTERCEPT_FUNCTION(getxattr); \ 5280 COMMON_INTERCEPT_FUNCTION(lgetxattr); \ 5281 COMMON_INTERCEPT_FUNCTION(fgetxattr); 5282#else 5283#define INIT_GETXATTR 5284#endif 5285 5286#if SANITIZER_INTERCEPT_GETRESID 5287INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) { 5288 void *ctx; 5289 COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid); 5290 // FIXME: under ASan the call below may write to freed memory and corrupt 5291 // its metadata. See 5292 // https://github.com/google/sanitizers/issues/321. 5293 int res = REAL(getresuid)(ruid, euid, suid); 5294 if (res >= 0) { 5295 if (ruid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ruid, uid_t_sz); 5296 if (euid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, euid, uid_t_sz); 5297 if (suid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, suid, uid_t_sz); 5298 } 5299 return res; 5300} 5301INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) { 5302 void *ctx; 5303 COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid); 5304 // FIXME: under ASan the call below may write to freed memory and corrupt 5305 // its metadata. See 5306 // https://github.com/google/sanitizers/issues/321. 5307 int res = REAL(getresgid)(rgid, egid, sgid); 5308 if (res >= 0) { 5309 if (rgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rgid, gid_t_sz); 5310 if (egid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, egid, gid_t_sz); 5311 if (sgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sgid, gid_t_sz); 5312 } 5313 return res; 5314} 5315#define INIT_GETRESID \ 5316 COMMON_INTERCEPT_FUNCTION(getresuid); \ 5317 COMMON_INTERCEPT_FUNCTION(getresgid); 5318#else 5319#define INIT_GETRESID 5320#endif 5321 5322#if SANITIZER_INTERCEPT_GETIFADDRS 5323// As long as getifaddrs()/freeifaddrs() use calloc()/free(), we don't need to 5324// intercept freeifaddrs(). If that ceases to be the case, we might need to 5325// intercept it to poison the memory again. 5326INTERCEPTOR(int, getifaddrs, __sanitizer_ifaddrs **ifap) { 5327 void *ctx; 5328 COMMON_INTERCEPTOR_ENTER(ctx, getifaddrs, ifap); 5329 // FIXME: under ASan the call below may write to freed memory and corrupt 5330 // its metadata. See 5331 // https://github.com/google/sanitizers/issues/321. 5332 int res = REAL(getifaddrs)(ifap); 5333 if (res == 0 && ifap) { 5334 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifap, sizeof(void *)); 5335 __sanitizer_ifaddrs *p = *ifap; 5336 while (p) { 5337 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs)); 5338 if (p->ifa_name) 5339 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name, 5340 REAL(strlen)(p->ifa_name) + 1); 5341 if (p->ifa_addr) 5342 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz); 5343 if (p->ifa_netmask) 5344 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_netmask, struct_sockaddr_sz); 5345 // On Linux this is a union, but the other member also points to a 5346 // struct sockaddr, so the following is sufficient. 5347 if (p->ifa_dstaddr) 5348 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz); 5349 // FIXME(smatveev): Unpoison p->ifa_data as well. 5350 p = p->ifa_next; 5351 } 5352 } 5353 return res; 5354} 5355#define INIT_GETIFADDRS \ 5356 COMMON_INTERCEPT_FUNCTION(getifaddrs); 5357#else 5358#define INIT_GETIFADDRS 5359#endif 5360 5361#if SANITIZER_INTERCEPT_IF_INDEXTONAME 5362INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) { 5363 void *ctx; 5364 COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname); 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 char *res = REAL(if_indextoname)(ifindex, ifname); 5369 if (res && ifname) 5370 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, REAL(strlen)(ifname) + 1); 5371 return res; 5372} 5373INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) { 5374 void *ctx; 5375 COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname); 5376 if (ifname) 5377 COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, REAL(strlen)(ifname) + 1); 5378 return REAL(if_nametoindex)(ifname); 5379} 5380#define INIT_IF_INDEXTONAME \ 5381 COMMON_INTERCEPT_FUNCTION(if_indextoname); \ 5382 COMMON_INTERCEPT_FUNCTION(if_nametoindex); 5383#else 5384#define INIT_IF_INDEXTONAME 5385#endif 5386 5387#if SANITIZER_INTERCEPT_CAPGET 5388INTERCEPTOR(int, capget, void *hdrp, void *datap) { 5389 void *ctx; 5390 COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap); 5391 if (hdrp) 5392 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz); 5393 // FIXME: under ASan the call below may write to freed memory and corrupt 5394 // its metadata. See 5395 // https://github.com/google/sanitizers/issues/321. 5396 int res = REAL(capget)(hdrp, datap); 5397 if (res == 0 && datap) 5398 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datap, __user_cap_data_struct_sz); 5399 // We can also return -1 and write to hdrp->version if the version passed in 5400 // hdrp->version is unsupported. But that's not a trivial condition to check, 5401 // and anyway COMMON_INTERCEPTOR_READ_RANGE protects us to some extent. 5402 return res; 5403} 5404INTERCEPTOR(int, capset, void *hdrp, const void *datap) { 5405 void *ctx; 5406 COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap); 5407 if (hdrp) 5408 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz); 5409 if (datap) 5410 COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, __user_cap_data_struct_sz); 5411 return REAL(capset)(hdrp, datap); 5412} 5413#define INIT_CAPGET \ 5414 COMMON_INTERCEPT_FUNCTION(capget); \ 5415 COMMON_INTERCEPT_FUNCTION(capset); 5416#else 5417#define INIT_CAPGET 5418#endif 5419 5420#if SANITIZER_INTERCEPT_AEABI_MEM 5421INTERCEPTOR(void *, __aeabi_memmove, void *to, const void *from, uptr size) { 5422 void *ctx; 5423 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size); 5424} 5425 5426INTERCEPTOR(void *, __aeabi_memmove4, void *to, const void *from, uptr size) { 5427 void *ctx; 5428 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size); 5429} 5430 5431INTERCEPTOR(void *, __aeabi_memmove8, void *to, const void *from, uptr size) { 5432 void *ctx; 5433 COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size); 5434} 5435 5436INTERCEPTOR(void *, __aeabi_memcpy, void *to, const void *from, uptr size) { 5437 void *ctx; 5438 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size); 5439} 5440 5441INTERCEPTOR(void *, __aeabi_memcpy4, void *to, const void *from, uptr size) { 5442 void *ctx; 5443 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size); 5444} 5445 5446INTERCEPTOR(void *, __aeabi_memcpy8, void *to, const void *from, uptr size) { 5447 void *ctx; 5448 COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size); 5449} 5450 5451// Note the argument order. 5452INTERCEPTOR(void *, __aeabi_memset, void *block, uptr size, int c) { 5453 void *ctx; 5454 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size); 5455} 5456 5457INTERCEPTOR(void *, __aeabi_memset4, void *block, uptr size, int c) { 5458 void *ctx; 5459 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size); 5460} 5461 5462INTERCEPTOR(void *, __aeabi_memset8, void *block, uptr size, int c) { 5463 void *ctx; 5464 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size); 5465} 5466 5467INTERCEPTOR(void *, __aeabi_memclr, void *block, uptr size) { 5468 void *ctx; 5469 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5470} 5471 5472INTERCEPTOR(void *, __aeabi_memclr4, void *block, uptr size) { 5473 void *ctx; 5474 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5475} 5476 5477INTERCEPTOR(void *, __aeabi_memclr8, void *block, uptr size) { 5478 void *ctx; 5479 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5480} 5481 5482#define INIT_AEABI_MEM \ 5483 COMMON_INTERCEPT_FUNCTION(__aeabi_memmove); \ 5484 COMMON_INTERCEPT_FUNCTION(__aeabi_memmove4); \ 5485 COMMON_INTERCEPT_FUNCTION(__aeabi_memmove8); \ 5486 COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy); \ 5487 COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy4); \ 5488 COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy8); \ 5489 COMMON_INTERCEPT_FUNCTION(__aeabi_memset); \ 5490 COMMON_INTERCEPT_FUNCTION(__aeabi_memset4); \ 5491 COMMON_INTERCEPT_FUNCTION(__aeabi_memset8); \ 5492 COMMON_INTERCEPT_FUNCTION(__aeabi_memclr); \ 5493 COMMON_INTERCEPT_FUNCTION(__aeabi_memclr4); \ 5494 COMMON_INTERCEPT_FUNCTION(__aeabi_memclr8); 5495#else 5496#define INIT_AEABI_MEM 5497#endif // SANITIZER_INTERCEPT_AEABI_MEM 5498 5499#if SANITIZER_INTERCEPT___BZERO 5500INTERCEPTOR(void *, __bzero, void *block, uptr size) { 5501 void *ctx; 5502 COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, 0, size); 5503} 5504 5505#define INIT___BZERO COMMON_INTERCEPT_FUNCTION(__bzero); 5506#else 5507#define INIT___BZERO 5508#endif // SANITIZER_INTERCEPT___BZERO 5509 5510#if SANITIZER_INTERCEPT_FTIME 5511INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) { 5512 void *ctx; 5513 COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp); 5514 // FIXME: under ASan the call below may write to freed memory and corrupt 5515 // its metadata. See 5516 // https://github.com/google/sanitizers/issues/321. 5517 int res = REAL(ftime)(tp); 5518 if (tp) 5519 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp)); 5520 return res; 5521} 5522#define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime); 5523#else 5524#define INIT_FTIME 5525#endif // SANITIZER_INTERCEPT_FTIME 5526 5527#if SANITIZER_INTERCEPT_XDR 5528INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr, 5529 unsigned size, int op) { 5530 void *ctx; 5531 COMMON_INTERCEPTOR_ENTER(ctx, xdrmem_create, xdrs, addr, size, op); 5532 // FIXME: under ASan the call below may write to freed memory and corrupt 5533 // its metadata. See 5534 // https://github.com/google/sanitizers/issues/321. 5535 REAL(xdrmem_create)(xdrs, addr, size, op); 5536 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs)); 5537 if (op == __sanitizer_XDR_ENCODE) { 5538 // It's not obvious how much data individual xdr_ routines write. 5539 // Simply unpoison the entire target buffer in advance. 5540 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (void *)addr, size); 5541 } 5542} 5543 5544INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) { 5545 void *ctx; 5546 COMMON_INTERCEPTOR_ENTER(ctx, xdrstdio_create, xdrs, file, op); 5547 // FIXME: under ASan the call below may write to freed memory and corrupt 5548 // its metadata. See 5549 // https://github.com/google/sanitizers/issues/321. 5550 REAL(xdrstdio_create)(xdrs, file, op); 5551 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs)); 5552} 5553 5554// FIXME: under ASan the call below may write to freed memory and corrupt 5555// its metadata. See 5556// https://github.com/google/sanitizers/issues/321. 5557#define XDR_INTERCEPTOR(F, T) \ 5558 INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) { \ 5559 void *ctx; \ 5560 COMMON_INTERCEPTOR_ENTER(ctx, F, xdrs, p); \ 5561 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) \ 5562 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); \ 5563 int res = REAL(F)(xdrs, p); \ 5564 if (res && p && xdrs->x_op == __sanitizer_XDR_DECODE) \ 5565 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); \ 5566 return res; \ 5567 } 5568 5569XDR_INTERCEPTOR(xdr_short, short) 5570XDR_INTERCEPTOR(xdr_u_short, unsigned short) 5571XDR_INTERCEPTOR(xdr_int, int) 5572XDR_INTERCEPTOR(xdr_u_int, unsigned) 5573XDR_INTERCEPTOR(xdr_long, long) 5574XDR_INTERCEPTOR(xdr_u_long, unsigned long) 5575XDR_INTERCEPTOR(xdr_hyper, long long) 5576XDR_INTERCEPTOR(xdr_u_hyper, unsigned long long) 5577XDR_INTERCEPTOR(xdr_longlong_t, long long) 5578XDR_INTERCEPTOR(xdr_u_longlong_t, unsigned long long) 5579XDR_INTERCEPTOR(xdr_int8_t, u8) 5580XDR_INTERCEPTOR(xdr_uint8_t, u8) 5581XDR_INTERCEPTOR(xdr_int16_t, u16) 5582XDR_INTERCEPTOR(xdr_uint16_t, u16) 5583XDR_INTERCEPTOR(xdr_int32_t, u32) 5584XDR_INTERCEPTOR(xdr_uint32_t, u32) 5585XDR_INTERCEPTOR(xdr_int64_t, u64) 5586XDR_INTERCEPTOR(xdr_uint64_t, u64) 5587XDR_INTERCEPTOR(xdr_quad_t, long long) 5588XDR_INTERCEPTOR(xdr_u_quad_t, unsigned long long) 5589XDR_INTERCEPTOR(xdr_bool, bool) 5590XDR_INTERCEPTOR(xdr_enum, int) 5591XDR_INTERCEPTOR(xdr_char, char) 5592XDR_INTERCEPTOR(xdr_u_char, unsigned char) 5593XDR_INTERCEPTOR(xdr_float, float) 5594XDR_INTERCEPTOR(xdr_double, double) 5595 5596// FIXME: intercept xdr_array, opaque, union, vector, reference, pointer, 5597// wrapstring, sizeof 5598 5599INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep, 5600 unsigned maxsize) { 5601 void *ctx; 5602 COMMON_INTERCEPTOR_ENTER(ctx, xdr_bytes, xdrs, p, sizep, maxsize); 5603 if (p && sizep && xdrs->x_op == __sanitizer_XDR_ENCODE) { 5604 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); 5605 COMMON_INTERCEPTOR_READ_RANGE(ctx, sizep, sizeof(*sizep)); 5606 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, *sizep); 5607 } 5608 // FIXME: under ASan the call below may write to freed memory and corrupt 5609 // its metadata. See 5610 // https://github.com/google/sanitizers/issues/321. 5611 int res = REAL(xdr_bytes)(xdrs, p, sizep, maxsize); 5612 if (p && sizep && xdrs->x_op == __sanitizer_XDR_DECODE) { 5613 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 5614 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizep, sizeof(*sizep)); 5615 if (res && *p && *sizep) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, *sizep); 5616 } 5617 return res; 5618} 5619 5620INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p, 5621 unsigned maxsize) { 5622 void *ctx; 5623 COMMON_INTERCEPTOR_ENTER(ctx, xdr_string, xdrs, p, maxsize); 5624 if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) { 5625 COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); 5626 COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, REAL(strlen)(*p) + 1); 5627 } 5628 // FIXME: under ASan the call below may write to freed memory and corrupt 5629 // its metadata. See 5630 // https://github.com/google/sanitizers/issues/321. 5631 int res = REAL(xdr_string)(xdrs, p, maxsize); 5632 if (p && xdrs->x_op == __sanitizer_XDR_DECODE) { 5633 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 5634 if (res && *p) 5635 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1); 5636 } 5637 return res; 5638} 5639 5640#define INIT_XDR \ 5641 COMMON_INTERCEPT_FUNCTION(xdrmem_create); \ 5642 COMMON_INTERCEPT_FUNCTION(xdrstdio_create); \ 5643 COMMON_INTERCEPT_FUNCTION(xdr_short); \ 5644 COMMON_INTERCEPT_FUNCTION(xdr_u_short); \ 5645 COMMON_INTERCEPT_FUNCTION(xdr_int); \ 5646 COMMON_INTERCEPT_FUNCTION(xdr_u_int); \ 5647 COMMON_INTERCEPT_FUNCTION(xdr_long); \ 5648 COMMON_INTERCEPT_FUNCTION(xdr_u_long); \ 5649 COMMON_INTERCEPT_FUNCTION(xdr_hyper); \ 5650 COMMON_INTERCEPT_FUNCTION(xdr_u_hyper); \ 5651 COMMON_INTERCEPT_FUNCTION(xdr_longlong_t); \ 5652 COMMON_INTERCEPT_FUNCTION(xdr_u_longlong_t); \ 5653 COMMON_INTERCEPT_FUNCTION(xdr_int8_t); \ 5654 COMMON_INTERCEPT_FUNCTION(xdr_uint8_t); \ 5655 COMMON_INTERCEPT_FUNCTION(xdr_int16_t); \ 5656 COMMON_INTERCEPT_FUNCTION(xdr_uint16_t); \ 5657 COMMON_INTERCEPT_FUNCTION(xdr_int32_t); \ 5658 COMMON_INTERCEPT_FUNCTION(xdr_uint32_t); \ 5659 COMMON_INTERCEPT_FUNCTION(xdr_int64_t); \ 5660 COMMON_INTERCEPT_FUNCTION(xdr_uint64_t); \ 5661 COMMON_INTERCEPT_FUNCTION(xdr_quad_t); \ 5662 COMMON_INTERCEPT_FUNCTION(xdr_u_quad_t); \ 5663 COMMON_INTERCEPT_FUNCTION(xdr_bool); \ 5664 COMMON_INTERCEPT_FUNCTION(xdr_enum); \ 5665 COMMON_INTERCEPT_FUNCTION(xdr_char); \ 5666 COMMON_INTERCEPT_FUNCTION(xdr_u_char); \ 5667 COMMON_INTERCEPT_FUNCTION(xdr_float); \ 5668 COMMON_INTERCEPT_FUNCTION(xdr_double); \ 5669 COMMON_INTERCEPT_FUNCTION(xdr_bytes); \ 5670 COMMON_INTERCEPT_FUNCTION(xdr_string); 5671#else 5672#define INIT_XDR 5673#endif // SANITIZER_INTERCEPT_XDR 5674 5675#if SANITIZER_INTERCEPT_TSEARCH 5676INTERCEPTOR(void *, tsearch, void *key, void **rootp, 5677 int (*compar)(const void *, const void *)) { 5678 void *ctx; 5679 COMMON_INTERCEPTOR_ENTER(ctx, tsearch, key, rootp, compar); 5680 // FIXME: under ASan the call below may write to freed memory and corrupt 5681 // its metadata. See 5682 // https://github.com/google/sanitizers/issues/321. 5683 void *res = REAL(tsearch)(key, rootp, compar); 5684 if (res && *(void **)res == key) 5685 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(void *)); 5686 return res; 5687} 5688#define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch); 5689#else 5690#define INIT_TSEARCH 5691#endif 5692 5693#if SANITIZER_INTERCEPT_LIBIO_INTERNALS || SANITIZER_INTERCEPT_FOPEN || \ 5694 SANITIZER_INTERCEPT_OPEN_MEMSTREAM 5695void unpoison_file(__sanitizer_FILE *fp) { 5696#if SANITIZER_HAS_STRUCT_FILE 5697 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp, sizeof(*fp)); 5698#if SANITIZER_NETBSD 5699 if (fp->_bf._base && fp->_bf._size > 0) 5700 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_bf._base, 5701 fp->_bf._size); 5702#else 5703 if (fp->_IO_read_base && fp->_IO_read_base < fp->_IO_read_end) 5704 COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_read_base, 5705 fp->_IO_read_end - fp->_IO_read_base); 5706#endif 5707#endif // SANITIZER_HAS_STRUCT_FILE 5708} 5709#endif 5710 5711#if SANITIZER_INTERCEPT_LIBIO_INTERNALS 5712// These guys are called when a .c source is built with -O2. 5713INTERCEPTOR(int, __uflow, __sanitizer_FILE *fp) { 5714 void *ctx; 5715 COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp); 5716 int res = REAL(__uflow)(fp); 5717 unpoison_file(fp); 5718 return res; 5719} 5720INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) { 5721 void *ctx; 5722 COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp); 5723 int res = REAL(__underflow)(fp); 5724 unpoison_file(fp); 5725 return res; 5726} 5727INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) { 5728 void *ctx; 5729 COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch); 5730 int res = REAL(__overflow)(fp, ch); 5731 unpoison_file(fp); 5732 return res; 5733} 5734INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) { 5735 void *ctx; 5736 COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp); 5737 int res = REAL(__wuflow)(fp); 5738 unpoison_file(fp); 5739 return res; 5740} 5741INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) { 5742 void *ctx; 5743 COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp); 5744 int res = REAL(__wunderflow)(fp); 5745 unpoison_file(fp); 5746 return res; 5747} 5748INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) { 5749 void *ctx; 5750 COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch); 5751 int res = REAL(__woverflow)(fp, ch); 5752 unpoison_file(fp); 5753 return res; 5754} 5755#define INIT_LIBIO_INTERNALS \ 5756 COMMON_INTERCEPT_FUNCTION(__uflow); \ 5757 COMMON_INTERCEPT_FUNCTION(__underflow); \ 5758 COMMON_INTERCEPT_FUNCTION(__overflow); \ 5759 COMMON_INTERCEPT_FUNCTION(__wuflow); \ 5760 COMMON_INTERCEPT_FUNCTION(__wunderflow); \ 5761 COMMON_INTERCEPT_FUNCTION(__woverflow); 5762#else 5763#define INIT_LIBIO_INTERNALS 5764#endif 5765 5766#if SANITIZER_INTERCEPT_FOPEN 5767INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) { 5768 void *ctx; 5769 COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode); 5770 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5771 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1); 5772 __sanitizer_FILE *res = REAL(fopen)(path, mode); 5773 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 5774 if (res) unpoison_file(res); 5775 return res; 5776} 5777INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) { 5778 void *ctx; 5779 COMMON_INTERCEPTOR_ENTER(ctx, fdopen, fd, mode); 5780 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1); 5781 __sanitizer_FILE *res = REAL(fdopen)(fd, mode); 5782 if (res) unpoison_file(res); 5783 return res; 5784} 5785INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode, 5786 __sanitizer_FILE *fp) { 5787 void *ctx; 5788 COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp); 5789 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5790 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1); 5791 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 5792 __sanitizer_FILE *res = REAL(freopen)(path, mode, fp); 5793 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 5794 if (res) unpoison_file(res); 5795 return res; 5796} 5797#define INIT_FOPEN \ 5798 COMMON_INTERCEPT_FUNCTION(fopen); \ 5799 COMMON_INTERCEPT_FUNCTION(fdopen); \ 5800 COMMON_INTERCEPT_FUNCTION(freopen); 5801#else 5802#define INIT_FOPEN 5803#endif 5804 5805#if SANITIZER_INTERCEPT_FOPEN64 5806INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) { 5807 void *ctx; 5808 COMMON_INTERCEPTOR_ENTER(ctx, fopen64, path, mode); 5809 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5810 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1); 5811 __sanitizer_FILE *res = REAL(fopen64)(path, mode); 5812 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 5813 if (res) unpoison_file(res); 5814 return res; 5815} 5816INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode, 5817 __sanitizer_FILE *fp) { 5818 void *ctx; 5819 COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp); 5820 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 5821 COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1); 5822 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 5823 __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp); 5824 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); 5825 if (res) unpoison_file(res); 5826 return res; 5827} 5828#define INIT_FOPEN64 \ 5829 COMMON_INTERCEPT_FUNCTION(fopen64); \ 5830 COMMON_INTERCEPT_FUNCTION(freopen64); 5831#else 5832#define INIT_FOPEN64 5833#endif 5834 5835#if SANITIZER_INTERCEPT_OPEN_MEMSTREAM 5836INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) { 5837 void *ctx; 5838 COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc); 5839 // FIXME: under ASan the call below may write to freed memory and corrupt 5840 // its metadata. See 5841 // https://github.com/google/sanitizers/issues/321. 5842 __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc); 5843 if (res) { 5844 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr)); 5845 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc)); 5846 unpoison_file(res); 5847 FileMetadata file = {ptr, sizeloc}; 5848 SetInterceptorMetadata(res, file); 5849 } 5850 return res; 5851} 5852INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr, 5853 SIZE_T *sizeloc) { 5854 void *ctx; 5855 COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc); 5856 __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc); 5857 if (res) { 5858 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr)); 5859 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc)); 5860 unpoison_file(res); 5861 FileMetadata file = {(char **)ptr, sizeloc}; 5862 SetInterceptorMetadata(res, file); 5863 } 5864 return res; 5865} 5866INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size, 5867 const char *mode) { 5868 void *ctx; 5869 COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode); 5870 // FIXME: under ASan the call below may write to freed memory and corrupt 5871 // its metadata. See 5872 // https://github.com/google/sanitizers/issues/321. 5873 __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode); 5874 if (res) unpoison_file(res); 5875 return res; 5876} 5877#define INIT_OPEN_MEMSTREAM \ 5878 COMMON_INTERCEPT_FUNCTION(open_memstream); \ 5879 COMMON_INTERCEPT_FUNCTION(open_wmemstream); \ 5880 COMMON_INTERCEPT_FUNCTION(fmemopen); 5881#else 5882#define INIT_OPEN_MEMSTREAM 5883#endif 5884 5885#if SANITIZER_INTERCEPT_OBSTACK 5886static void initialize_obstack(__sanitizer_obstack *obstack) { 5887 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack)); 5888 if (obstack->chunk) 5889 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk, 5890 sizeof(*obstack->chunk)); 5891} 5892 5893INTERCEPTOR(int, _obstack_begin_1, __sanitizer_obstack *obstack, int sz, 5894 int align, void *(*alloc_fn)(uptr arg, uptr sz), 5895 void (*free_fn)(uptr arg, void *p)) { 5896 void *ctx; 5897 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn, 5898 free_fn); 5899 int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn); 5900 if (res) initialize_obstack(obstack); 5901 return res; 5902} 5903INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz, 5904 int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) { 5905 void *ctx; 5906 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn, 5907 free_fn); 5908 int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn); 5909 if (res) initialize_obstack(obstack); 5910 return res; 5911} 5912INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) { 5913 void *ctx; 5914 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length); 5915 REAL(_obstack_newchunk)(obstack, length); 5916 if (obstack->chunk) 5917 COMMON_INTERCEPTOR_INITIALIZE_RANGE( 5918 obstack->chunk, obstack->next_free - (char *)obstack->chunk); 5919} 5920#define INIT_OBSTACK \ 5921 COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \ 5922 COMMON_INTERCEPT_FUNCTION(_obstack_begin); \ 5923 COMMON_INTERCEPT_FUNCTION(_obstack_newchunk); 5924#else 5925#define INIT_OBSTACK 5926#endif 5927 5928#if SANITIZER_INTERCEPT_FFLUSH 5929INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) { 5930 void *ctx; 5931 COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp); 5932 int res = REAL(fflush)(fp); 5933 // FIXME: handle fp == NULL 5934 if (fp) { 5935 const FileMetadata *m = GetInterceptorMetadata(fp); 5936 if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); 5937 } 5938 return res; 5939} 5940#define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush); 5941#else 5942#define INIT_FFLUSH 5943#endif 5944 5945#if SANITIZER_INTERCEPT_FCLOSE 5946INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) { 5947 void *ctx; 5948 COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp); 5949 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 5950 const FileMetadata *m = GetInterceptorMetadata(fp); 5951 int res = REAL(fclose)(fp); 5952 if (m) { 5953 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); 5954 DeleteInterceptorMetadata(fp); 5955 } 5956 return res; 5957} 5958#define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose); 5959#else 5960#define INIT_FCLOSE 5961#endif 5962 5963#if SANITIZER_INTERCEPT_DLOPEN_DLCLOSE 5964INTERCEPTOR(void*, dlopen, const char *filename, int flag) { 5965 void *ctx; 5966 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlopen, filename, flag); 5967 if (filename) COMMON_INTERCEPTOR_READ_STRING(ctx, filename, 0); 5968 COMMON_INTERCEPTOR_ON_DLOPEN(filename, flag); 5969 void *res = REAL(dlopen)(filename, flag); 5970 Symbolizer::GetOrInit()->InvalidateModuleList(); 5971 COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, res); 5972 return res; 5973} 5974 5975INTERCEPTOR(int, dlclose, void *handle) { 5976 void *ctx; 5977 COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlclose, handle); 5978 int res = REAL(dlclose)(handle); 5979 Symbolizer::GetOrInit()->InvalidateModuleList(); 5980 COMMON_INTERCEPTOR_LIBRARY_UNLOADED(); 5981 return res; 5982} 5983#define INIT_DLOPEN_DLCLOSE \ 5984 COMMON_INTERCEPT_FUNCTION(dlopen); \ 5985 COMMON_INTERCEPT_FUNCTION(dlclose); 5986#else 5987#define INIT_DLOPEN_DLCLOSE 5988#endif 5989 5990#if SANITIZER_INTERCEPT_GETPASS 5991INTERCEPTOR(char *, getpass, const char *prompt) { 5992 void *ctx; 5993 COMMON_INTERCEPTOR_ENTER(ctx, getpass, prompt); 5994 if (prompt) 5995 COMMON_INTERCEPTOR_READ_RANGE(ctx, prompt, REAL(strlen)(prompt)+1); 5996 char *res = REAL(getpass)(prompt); 5997 if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res)+1); 5998 return res; 5999} 6000 6001#define INIT_GETPASS COMMON_INTERCEPT_FUNCTION(getpass); 6002#else 6003#define INIT_GETPASS 6004#endif 6005 6006#if SANITIZER_INTERCEPT_TIMERFD 6007INTERCEPTOR(int, timerfd_settime, int fd, int flags, void *new_value, 6008 void *old_value) { 6009 void *ctx; 6010 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_settime, fd, flags, new_value, 6011 old_value); 6012 COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerspec_sz); 6013 int res = REAL(timerfd_settime)(fd, flags, new_value, old_value); 6014 if (res != -1 && old_value) 6015 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerspec_sz); 6016 return res; 6017} 6018 6019INTERCEPTOR(int, timerfd_gettime, int fd, void *curr_value) { 6020 void *ctx; 6021 COMMON_INTERCEPTOR_ENTER(ctx, timerfd_gettime, fd, curr_value); 6022 int res = REAL(timerfd_gettime)(fd, curr_value); 6023 if (res != -1 && curr_value) 6024 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerspec_sz); 6025 return res; 6026} 6027#define INIT_TIMERFD \ 6028 COMMON_INTERCEPT_FUNCTION(timerfd_settime); \ 6029 COMMON_INTERCEPT_FUNCTION(timerfd_gettime); 6030#else 6031#define INIT_TIMERFD 6032#endif 6033 6034#if SANITIZER_INTERCEPT_MLOCKX 6035// Linux kernel has a bug that leads to kernel deadlock if a process 6036// maps TBs of memory and then calls mlock(). 6037static void MlockIsUnsupported() { 6038 static atomic_uint8_t printed; 6039 if (atomic_exchange(&printed, 1, memory_order_relaxed)) 6040 return; 6041 VPrintf(1, "%s ignores mlock/mlockall/munlock/munlockall\n", 6042 SanitizerToolName); 6043} 6044 6045INTERCEPTOR(int, mlock, const void *addr, uptr len) { 6046 MlockIsUnsupported(); 6047 return 0; 6048} 6049 6050INTERCEPTOR(int, munlock, const void *addr, uptr len) { 6051 MlockIsUnsupported(); 6052 return 0; 6053} 6054 6055INTERCEPTOR(int, mlockall, int flags) { 6056 MlockIsUnsupported(); 6057 return 0; 6058} 6059 6060INTERCEPTOR(int, munlockall, void) { 6061 MlockIsUnsupported(); 6062 return 0; 6063} 6064 6065#define INIT_MLOCKX \ 6066 COMMON_INTERCEPT_FUNCTION(mlock); \ 6067 COMMON_INTERCEPT_FUNCTION(munlock); \ 6068 COMMON_INTERCEPT_FUNCTION(mlockall); \ 6069 COMMON_INTERCEPT_FUNCTION(munlockall); 6070 6071#else 6072#define INIT_MLOCKX 6073#endif // SANITIZER_INTERCEPT_MLOCKX 6074 6075#if SANITIZER_INTERCEPT_FOPENCOOKIE 6076struct WrappedCookie { 6077 void *real_cookie; 6078 __sanitizer_cookie_io_functions_t real_io_funcs; 6079}; 6080 6081static uptr wrapped_read(void *cookie, char *buf, uptr size) { 6082 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6083 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6084 __sanitizer_cookie_io_read real_read = wrapped_cookie->real_io_funcs.read; 6085 return real_read ? real_read(wrapped_cookie->real_cookie, buf, size) : 0; 6086} 6087 6088static uptr wrapped_write(void *cookie, const char *buf, uptr size) { 6089 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6090 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6091 __sanitizer_cookie_io_write real_write = wrapped_cookie->real_io_funcs.write; 6092 return real_write ? real_write(wrapped_cookie->real_cookie, buf, size) : size; 6093} 6094 6095static int wrapped_seek(void *cookie, u64 *offset, int whence) { 6096 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 6097 COMMON_INTERCEPTOR_INITIALIZE_RANGE(offset, sizeof(*offset)); 6098 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6099 __sanitizer_cookie_io_seek real_seek = wrapped_cookie->real_io_funcs.seek; 6100 return real_seek ? real_seek(wrapped_cookie->real_cookie, offset, whence) 6101 : -1; 6102} 6103 6104static int wrapped_close(void *cookie) { 6105 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 6106 WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; 6107 __sanitizer_cookie_io_close real_close = wrapped_cookie->real_io_funcs.close; 6108 int res = real_close ? real_close(wrapped_cookie->real_cookie) : 0; 6109 InternalFree(wrapped_cookie); 6110 return res; 6111} 6112 6113INTERCEPTOR(__sanitizer_FILE *, fopencookie, void *cookie, const char *mode, 6114 __sanitizer_cookie_io_functions_t io_funcs) { 6115 void *ctx; 6116 COMMON_INTERCEPTOR_ENTER(ctx, fopencookie, cookie, mode, io_funcs); 6117 WrappedCookie *wrapped_cookie = 6118 (WrappedCookie *)InternalAlloc(sizeof(WrappedCookie)); 6119 wrapped_cookie->real_cookie = cookie; 6120 wrapped_cookie->real_io_funcs = io_funcs; 6121 __sanitizer_FILE *res = 6122 REAL(fopencookie)(wrapped_cookie, mode, {wrapped_read, wrapped_write, 6123 wrapped_seek, wrapped_close}); 6124 return res; 6125} 6126 6127#define INIT_FOPENCOOKIE COMMON_INTERCEPT_FUNCTION(fopencookie); 6128#else 6129#define INIT_FOPENCOOKIE 6130#endif // SANITIZER_INTERCEPT_FOPENCOOKIE 6131 6132#if SANITIZER_INTERCEPT_SEM 6133INTERCEPTOR(int, sem_init, __sanitizer_sem_t *s, int pshared, unsigned value) { 6134 void *ctx; 6135 COMMON_INTERCEPTOR_ENTER(ctx, sem_init, s, pshared, value); 6136 // Workaround a bug in glibc's "old" semaphore implementation by 6137 // zero-initializing the sem_t contents. This has to be done here because 6138 // interceptors bind to the lowest symbols version by default, hitting the 6139 // buggy code path while the non-sanitized build of the same code works fine. 6140 REAL(memset)(s, 0, sizeof(*s)); 6141 int res = REAL(sem_init)(s, pshared, value); 6142 return res; 6143} 6144 6145INTERCEPTOR(int, sem_destroy, __sanitizer_sem_t *s) { 6146 void *ctx; 6147 COMMON_INTERCEPTOR_ENTER(ctx, sem_destroy, s); 6148 int res = REAL(sem_destroy)(s); 6149 return res; 6150} 6151 6152INTERCEPTOR(int, sem_wait, __sanitizer_sem_t *s) { 6153 void *ctx; 6154 COMMON_INTERCEPTOR_ENTER(ctx, sem_wait, s); 6155 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_wait)(s); 6156 if (res == 0) { 6157 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6158 } 6159 return res; 6160} 6161 6162INTERCEPTOR(int, sem_trywait, __sanitizer_sem_t *s) { 6163 void *ctx; 6164 COMMON_INTERCEPTOR_ENTER(ctx, sem_trywait, s); 6165 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_trywait)(s); 6166 if (res == 0) { 6167 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6168 } 6169 return res; 6170} 6171 6172INTERCEPTOR(int, sem_timedwait, __sanitizer_sem_t *s, void *abstime) { 6173 void *ctx; 6174 COMMON_INTERCEPTOR_ENTER(ctx, sem_timedwait, s, abstime); 6175 COMMON_INTERCEPTOR_READ_RANGE(ctx, abstime, struct_timespec_sz); 6176 int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_timedwait)(s, abstime); 6177 if (res == 0) { 6178 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6179 } 6180 return res; 6181} 6182 6183INTERCEPTOR(int, sem_post, __sanitizer_sem_t *s) { 6184 void *ctx; 6185 COMMON_INTERCEPTOR_ENTER(ctx, sem_post, s); 6186 COMMON_INTERCEPTOR_RELEASE(ctx, (uptr)s); 6187 int res = REAL(sem_post)(s); 6188 return res; 6189} 6190 6191INTERCEPTOR(int, sem_getvalue, __sanitizer_sem_t *s, int *sval) { 6192 void *ctx; 6193 COMMON_INTERCEPTOR_ENTER(ctx, sem_getvalue, s, sval); 6194 int res = REAL(sem_getvalue)(s, sval); 6195 if (res == 0) { 6196 COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); 6197 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sval, sizeof(*sval)); 6198 } 6199 return res; 6200} 6201#define INIT_SEM \ 6202 COMMON_INTERCEPT_FUNCTION(sem_init); \ 6203 COMMON_INTERCEPT_FUNCTION(sem_destroy); \ 6204 COMMON_INTERCEPT_FUNCTION(sem_wait); \ 6205 COMMON_INTERCEPT_FUNCTION(sem_trywait); \ 6206 COMMON_INTERCEPT_FUNCTION(sem_timedwait); \ 6207 COMMON_INTERCEPT_FUNCTION(sem_post); \ 6208 COMMON_INTERCEPT_FUNCTION(sem_getvalue); 6209#else 6210#define INIT_SEM 6211#endif // SANITIZER_INTERCEPT_SEM 6212 6213#if SANITIZER_INTERCEPT_PTHREAD_SETCANCEL 6214INTERCEPTOR(int, pthread_setcancelstate, int state, int *oldstate) { 6215 void *ctx; 6216 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcancelstate, state, oldstate); 6217 int res = REAL(pthread_setcancelstate)(state, oldstate); 6218 if (res == 0 && oldstate != nullptr) 6219 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldstate, sizeof(*oldstate)); 6220 return res; 6221} 6222 6223INTERCEPTOR(int, pthread_setcanceltype, int type, int *oldtype) { 6224 void *ctx; 6225 COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcanceltype, type, oldtype); 6226 int res = REAL(pthread_setcanceltype)(type, oldtype); 6227 if (res == 0 && oldtype != nullptr) 6228 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldtype, sizeof(*oldtype)); 6229 return res; 6230} 6231#define INIT_PTHREAD_SETCANCEL \ 6232 COMMON_INTERCEPT_FUNCTION(pthread_setcancelstate); \ 6233 COMMON_INTERCEPT_FUNCTION(pthread_setcanceltype); 6234#else 6235#define INIT_PTHREAD_SETCANCEL 6236#endif 6237 6238#if SANITIZER_INTERCEPT_MINCORE 6239INTERCEPTOR(int, mincore, void *addr, uptr length, unsigned char *vec) { 6240 void *ctx; 6241 COMMON_INTERCEPTOR_ENTER(ctx, mincore, addr, length, vec); 6242 int res = REAL(mincore)(addr, length, vec); 6243 if (res == 0) { 6244 uptr page_size = GetPageSizeCached(); 6245 uptr vec_size = ((length + page_size - 1) & (~(page_size - 1))) / page_size; 6246 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, vec, vec_size); 6247 } 6248 return res; 6249} 6250#define INIT_MINCORE COMMON_INTERCEPT_FUNCTION(mincore); 6251#else 6252#define INIT_MINCORE 6253#endif 6254 6255#if SANITIZER_INTERCEPT_PROCESS_VM_READV 6256INTERCEPTOR(SSIZE_T, process_vm_readv, int pid, __sanitizer_iovec *local_iov, 6257 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt, 6258 uptr flags) { 6259 void *ctx; 6260 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_readv, pid, local_iov, liovcnt, 6261 remote_iov, riovcnt, flags); 6262 SSIZE_T res = REAL(process_vm_readv)(pid, local_iov, liovcnt, remote_iov, 6263 riovcnt, flags); 6264 if (res > 0) 6265 write_iovec(ctx, local_iov, liovcnt, res); 6266 return res; 6267} 6268 6269INTERCEPTOR(SSIZE_T, process_vm_writev, int pid, __sanitizer_iovec *local_iov, 6270 uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt, 6271 uptr flags) { 6272 void *ctx; 6273 COMMON_INTERCEPTOR_ENTER(ctx, process_vm_writev, pid, local_iov, liovcnt, 6274 remote_iov, riovcnt, flags); 6275 SSIZE_T res = REAL(process_vm_writev)(pid, local_iov, liovcnt, remote_iov, 6276 riovcnt, flags); 6277 if (res > 0) 6278 read_iovec(ctx, local_iov, liovcnt, res); 6279 return res; 6280} 6281#define INIT_PROCESS_VM_READV \ 6282 COMMON_INTERCEPT_FUNCTION(process_vm_readv); \ 6283 COMMON_INTERCEPT_FUNCTION(process_vm_writev); 6284#else 6285#define INIT_PROCESS_VM_READV 6286#endif 6287 6288#if SANITIZER_INTERCEPT_CTERMID 6289INTERCEPTOR(char *, ctermid, char *s) { 6290 void *ctx; 6291 COMMON_INTERCEPTOR_ENTER(ctx, ctermid, s); 6292 char *res = REAL(ctermid)(s); 6293 if (res) { 6294 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 6295 } 6296 return res; 6297} 6298#define INIT_CTERMID COMMON_INTERCEPT_FUNCTION(ctermid); 6299#else 6300#define INIT_CTERMID 6301#endif 6302 6303#if SANITIZER_INTERCEPT_CTERMID_R 6304INTERCEPTOR(char *, ctermid_r, char *s) { 6305 void *ctx; 6306 COMMON_INTERCEPTOR_ENTER(ctx, ctermid_r, s); 6307 char *res = REAL(ctermid_r)(s); 6308 if (res) { 6309 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1); 6310 } 6311 return res; 6312} 6313#define INIT_CTERMID_R COMMON_INTERCEPT_FUNCTION(ctermid_r); 6314#else 6315#define INIT_CTERMID_R 6316#endif 6317 6318#if SANITIZER_INTERCEPT_RECV_RECVFROM 6319INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) { 6320 void *ctx; 6321 COMMON_INTERCEPTOR_ENTER(ctx, recv, fd, buf, len, flags); 6322 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6323 SSIZE_T res = REAL(recv)(fd, buf, len, flags); 6324 if (res > 0) { 6325 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6326 } 6327 if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 6328 return res; 6329} 6330 6331INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags, 6332 void *srcaddr, int *addrlen) { 6333 void *ctx; 6334 COMMON_INTERCEPTOR_ENTER(ctx, recvfrom, fd, buf, len, flags, srcaddr, 6335 addrlen); 6336 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6337 SIZE_T srcaddr_sz; 6338 if (srcaddr) srcaddr_sz = *addrlen; 6339 (void)srcaddr_sz; // prevent "set but not used" warning 6340 SSIZE_T res = REAL(recvfrom)(fd, buf, len, flags, srcaddr, addrlen); 6341 if (res > 0) { 6342 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6343 if (srcaddr) 6344 COMMON_INTERCEPTOR_INITIALIZE_RANGE(srcaddr, 6345 Min((SIZE_T)*addrlen, srcaddr_sz)); 6346 } 6347 return res; 6348} 6349#define INIT_RECV_RECVFROM \ 6350 COMMON_INTERCEPT_FUNCTION(recv); \ 6351 COMMON_INTERCEPT_FUNCTION(recvfrom); 6352#else 6353#define INIT_RECV_RECVFROM 6354#endif 6355 6356#if SANITIZER_INTERCEPT_SEND_SENDTO 6357INTERCEPTOR(SSIZE_T, send, int fd, void *buf, SIZE_T len, int flags) { 6358 void *ctx; 6359 COMMON_INTERCEPTOR_ENTER(ctx, send, fd, buf, len, flags); 6360 if (fd >= 0) { 6361 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6362 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 6363 } 6364 SSIZE_T res = REAL(send)(fd, buf, len, flags); 6365 if (common_flags()->intercept_send && res > 0) 6366 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6367 return res; 6368} 6369 6370INTERCEPTOR(SSIZE_T, sendto, int fd, void *buf, SIZE_T len, int flags, 6371 void *dstaddr, int addrlen) { 6372 void *ctx; 6373 COMMON_INTERCEPTOR_ENTER(ctx, sendto, fd, buf, len, flags, dstaddr, addrlen); 6374 if (fd >= 0) { 6375 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6376 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 6377 } 6378 // Can't check dstaddr as it may have uninitialized padding at the end. 6379 SSIZE_T res = REAL(sendto)(fd, buf, len, flags, dstaddr, addrlen); 6380 if (common_flags()->intercept_send && res > 0) 6381 COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len)); 6382 return res; 6383} 6384#define INIT_SEND_SENDTO \ 6385 COMMON_INTERCEPT_FUNCTION(send); \ 6386 COMMON_INTERCEPT_FUNCTION(sendto); 6387#else 6388#define INIT_SEND_SENDTO 6389#endif 6390 6391#if SANITIZER_INTERCEPT_EVENTFD_READ_WRITE 6392INTERCEPTOR(int, eventfd_read, int fd, u64 *value) { 6393 void *ctx; 6394 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_read, fd, value); 6395 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6396 int res = REAL(eventfd_read)(fd, value); 6397 if (res == 0) { 6398 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, sizeof(*value)); 6399 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 6400 } 6401 return res; 6402} 6403INTERCEPTOR(int, eventfd_write, int fd, u64 value) { 6404 void *ctx; 6405 COMMON_INTERCEPTOR_ENTER(ctx, eventfd_write, fd, value); 6406 if (fd >= 0) { 6407 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 6408 COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); 6409 } 6410 int res = REAL(eventfd_write)(fd, value); 6411 return res; 6412} 6413#define INIT_EVENTFD_READ_WRITE \ 6414 COMMON_INTERCEPT_FUNCTION(eventfd_read); \ 6415 COMMON_INTERCEPT_FUNCTION(eventfd_write) 6416#else 6417#define INIT_EVENTFD_READ_WRITE 6418#endif 6419 6420#if SANITIZER_INTERCEPT_STAT 6421INTERCEPTOR(int, stat, const char *path, void *buf) { 6422 void *ctx; 6423 COMMON_INTERCEPTOR_ENTER(ctx, stat, path, buf); 6424 if (common_flags()->intercept_stat) 6425 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 6426 int res = REAL(stat)(path, buf); 6427 if (!res) 6428 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 6429 return res; 6430} 6431#define INIT_STAT COMMON_INTERCEPT_FUNCTION(stat) 6432#else 6433#define INIT_STAT 6434#endif 6435 6436#if SANITIZER_INTERCEPT_LSTAT 6437INTERCEPTOR(int, lstat, const char *path, void *buf) { 6438 void *ctx; 6439 COMMON_INTERCEPTOR_ENTER(ctx, lstat, path, buf); 6440 if (common_flags()->intercept_stat) 6441 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 6442 int res = REAL(lstat)(path, buf); 6443 if (!res) 6444 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 6445 return res; 6446} 6447#define INIT_LSTAT COMMON_INTERCEPT_FUNCTION(lstat) 6448#else 6449#define INIT_LSTAT 6450#endif 6451 6452#if SANITIZER_INTERCEPT___XSTAT 6453INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) { 6454 void *ctx; 6455 COMMON_INTERCEPTOR_ENTER(ctx, __xstat, version, path, buf); 6456 if (common_flags()->intercept_stat) 6457 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 6458 int res = REAL(__xstat)(version, path, buf); 6459 if (!res) 6460 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 6461 return res; 6462} 6463#define INIT___XSTAT COMMON_INTERCEPT_FUNCTION(__xstat) 6464#else 6465#define INIT___XSTAT 6466#endif 6467 6468#if SANITIZER_INTERCEPT___XSTAT64 6469INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) { 6470 void *ctx; 6471 COMMON_INTERCEPTOR_ENTER(ctx, __xstat64, version, path, buf); 6472 if (common_flags()->intercept_stat) 6473 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 6474 int res = REAL(__xstat64)(version, path, buf); 6475 if (!res) 6476 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); 6477 return res; 6478} 6479#define INIT___XSTAT64 COMMON_INTERCEPT_FUNCTION(__xstat64) 6480#else 6481#define INIT___XSTAT64 6482#endif 6483 6484#if SANITIZER_INTERCEPT___LXSTAT 6485INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) { 6486 void *ctx; 6487 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat, version, path, buf); 6488 if (common_flags()->intercept_stat) 6489 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 6490 int res = REAL(__lxstat)(version, path, buf); 6491 if (!res) 6492 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); 6493 return res; 6494} 6495#define INIT___LXSTAT COMMON_INTERCEPT_FUNCTION(__lxstat) 6496#else 6497#define INIT___LXSTAT 6498#endif 6499 6500#if SANITIZER_INTERCEPT___LXSTAT64 6501INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) { 6502 void *ctx; 6503 COMMON_INTERCEPTOR_ENTER(ctx, __lxstat64, version, path, buf); 6504 if (common_flags()->intercept_stat) 6505 COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); 6506 int res = REAL(__lxstat64)(version, path, buf); 6507 if (!res) 6508 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); 6509 return res; 6510} 6511#define INIT___LXSTAT64 COMMON_INTERCEPT_FUNCTION(__lxstat64) 6512#else 6513#define INIT___LXSTAT64 6514#endif 6515 6516// FIXME: add other *stat interceptor 6517 6518#if SANITIZER_INTERCEPT_UTMP 6519INTERCEPTOR(void *, getutent, int dummy) { 6520 void *ctx; 6521 COMMON_INTERCEPTOR_ENTER(ctx, getutent, dummy); 6522 void *res = REAL(getutent)(dummy); 6523 if (res) 6524 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); 6525 return res; 6526} 6527INTERCEPTOR(void *, getutid, void *ut) { 6528 void *ctx; 6529 COMMON_INTERCEPTOR_ENTER(ctx, getutid, ut); 6530 void *res = REAL(getutid)(ut); 6531 if (res) 6532 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); 6533 return res; 6534} 6535INTERCEPTOR(void *, getutline, void *ut) { 6536 void *ctx; 6537 COMMON_INTERCEPTOR_ENTER(ctx, getutline, ut); 6538 void *res = REAL(getutline)(ut); 6539 if (res) 6540 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); 6541 return res; 6542} 6543#define INIT_UTMP \ 6544 COMMON_INTERCEPT_FUNCTION(getutent); \ 6545 COMMON_INTERCEPT_FUNCTION(getutid); \ 6546 COMMON_INTERCEPT_FUNCTION(getutline); 6547#else 6548#define INIT_UTMP 6549#endif 6550 6551#if SANITIZER_INTERCEPT_UTMPX 6552INTERCEPTOR(void *, getutxent, int dummy) { 6553 void *ctx; 6554 COMMON_INTERCEPTOR_ENTER(ctx, getutxent, dummy); 6555 void *res = REAL(getutxent)(dummy); 6556 if (res) 6557 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); 6558 return res; 6559} 6560INTERCEPTOR(void *, getutxid, void *ut) { 6561 void *ctx; 6562 COMMON_INTERCEPTOR_ENTER(ctx, getutxid, ut); 6563 void *res = REAL(getutxid)(ut); 6564 if (res) 6565 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); 6566 return res; 6567} 6568INTERCEPTOR(void *, getutxline, void *ut) { 6569 void *ctx; 6570 COMMON_INTERCEPTOR_ENTER(ctx, getutxline, ut); 6571 void *res = REAL(getutxline)(ut); 6572 if (res) 6573 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); 6574 return res; 6575} 6576INTERCEPTOR(void *, pututxline, const void *ut) { 6577 void *ctx; 6578 COMMON_INTERCEPTOR_ENTER(ctx, pututxline, ut); 6579 if (ut) 6580 COMMON_INTERCEPTOR_READ_RANGE(ctx, ut, __sanitizer::struct_utmpx_sz); 6581 void *res = REAL(pututxline)(ut); 6582 if (res) 6583 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_utmpx_sz); 6584 return res; 6585} 6586#define INIT_UTMPX \ 6587 COMMON_INTERCEPT_FUNCTION(getutxent); \ 6588 COMMON_INTERCEPT_FUNCTION(getutxid); \ 6589 COMMON_INTERCEPT_FUNCTION(getutxline); \ 6590 COMMON_INTERCEPT_FUNCTION(pututxline); 6591#else 6592#define INIT_UTMPX 6593#endif 6594 6595#if SANITIZER_INTERCEPT_GETLOADAVG 6596INTERCEPTOR(int, getloadavg, double *loadavg, int nelem) { 6597 void *ctx; 6598 COMMON_INTERCEPTOR_ENTER(ctx, getloadavg, loadavg, nelem); 6599 int res = REAL(getloadavg)(loadavg, nelem); 6600 if (res > 0) 6601 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, loadavg, res * sizeof(*loadavg)); 6602 return res; 6603} 6604#define INIT_GETLOADAVG \ 6605 COMMON_INTERCEPT_FUNCTION(getloadavg); 6606#else 6607#define INIT_GETLOADAVG 6608#endif 6609 6610#if SANITIZER_INTERCEPT_MCHECK_MPROBE 6611INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) { 6612 return 0; 6613} 6614 6615INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) { 6616 return 0; 6617} 6618 6619INTERCEPTOR(int, mprobe, void *ptr) { 6620 return 0; 6621} 6622#endif 6623 6624INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) { 6625 void *ctx; 6626 COMMON_INTERCEPTOR_ENTER(ctx, wcslen, s); 6627 SIZE_T res = REAL(wcslen)(s); 6628 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (res + 1)); 6629 return res; 6630} 6631 6632INTERCEPTOR(SIZE_T, wcsnlen, const wchar_t *s, SIZE_T n) { 6633 void *ctx; 6634 COMMON_INTERCEPTOR_ENTER(ctx, wcsnlen, s, n); 6635 SIZE_T res = REAL(wcsnlen)(s, n); 6636 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * Min(res + 1, n)); 6637 return res; 6638} 6639#define INIT_WCSLEN \ 6640 COMMON_INTERCEPT_FUNCTION(wcslen); \ 6641 COMMON_INTERCEPT_FUNCTION(wcsnlen); 6642 6643#if SANITIZER_INTERCEPT_WCSCAT 6644INTERCEPTOR(wchar_t *, wcscat, wchar_t *dst, const wchar_t *src) { 6645 void *ctx; 6646 COMMON_INTERCEPTOR_ENTER(ctx, wcscat, dst, src); 6647 SIZE_T src_size = REAL(wcslen)(src); 6648 SIZE_T dst_size = REAL(wcslen)(dst); 6649 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, (src_size + 1) * sizeof(wchar_t)); 6650 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t)); 6651 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size, 6652 (src_size + 1) * sizeof(wchar_t)); 6653 return REAL(wcscat)(dst, src); // NOLINT 6654} 6655 6656INTERCEPTOR(wchar_t *, wcsncat, wchar_t *dst, const wchar_t *src, SIZE_T n) { 6657 void *ctx; 6658 COMMON_INTERCEPTOR_ENTER(ctx, wcsncat, dst, src, n); 6659 SIZE_T src_size = REAL(wcsnlen)(src, n); 6660 SIZE_T dst_size = REAL(wcslen)(dst); 6661 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, 6662 Min(src_size + 1, n) * sizeof(wchar_t)); 6663 COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t)); 6664 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size, 6665 (src_size + 1) * sizeof(wchar_t)); 6666 return REAL(wcsncat)(dst, src, n); // NOLINT 6667} 6668#define INIT_WCSCAT \ 6669 COMMON_INTERCEPT_FUNCTION(wcscat); \ 6670 COMMON_INTERCEPT_FUNCTION(wcsncat); 6671#else 6672#define INIT_WCSCAT 6673#endif 6674 6675#if SANITIZER_INTERCEPT_STRXFRM 6676static SIZE_T RealStrLen(const char *str) { return REAL(strlen)(str); } 6677 6678static SIZE_T RealStrLen(const wchar_t *str) { return REAL(wcslen)(str); } 6679 6680#define STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len, ...) \ 6681 { \ 6682 void *ctx; \ 6683 COMMON_INTERCEPTOR_ENTER(ctx, strxfrm, dest, src, len, ##__VA_ARGS__); \ 6684 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, \ 6685 sizeof(*src) * (RealStrLen(src) + 1)); \ 6686 SIZE_T res = REAL(strxfrm)(dest, src, len, ##__VA_ARGS__); \ 6687 if (res < len) \ 6688 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, sizeof(*src) * (res + 1)); \ 6689 return res; \ 6690 } 6691 6692INTERCEPTOR(SIZE_T, strxfrm, char *dest, const char *src, SIZE_T len) { 6693 STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len); 6694} 6695 6696INTERCEPTOR(SIZE_T, strxfrm_l, char *dest, const char *src, SIZE_T len, 6697 void *locale) { 6698 STRXFRM_INTERCEPTOR_IMPL(strxfrm_l, dest, src, len, locale); 6699} 6700 6701#define INIT_STRXFRM \ 6702 COMMON_INTERCEPT_FUNCTION(strxfrm); \ 6703 COMMON_INTERCEPT_FUNCTION(strxfrm_l); 6704#else 6705#define INIT_STRXFRM 6706#endif 6707 6708#if SANITIZER_INTERCEPT___STRXFRM_L 6709INTERCEPTOR(SIZE_T, __strxfrm_l, char *dest, const char *src, SIZE_T len, 6710 void *locale) { 6711 STRXFRM_INTERCEPTOR_IMPL(__strxfrm_l, dest, src, len, locale); 6712} 6713 6714#define INIT___STRXFRM_L COMMON_INTERCEPT_FUNCTION(__strxfrm_l); 6715#else 6716#define INIT___STRXFRM_L 6717#endif 6718 6719#if SANITIZER_INTERCEPT_WCSXFRM 6720INTERCEPTOR(SIZE_T, wcsxfrm, wchar_t *dest, const wchar_t *src, SIZE_T len) { 6721 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm, dest, src, len); 6722} 6723 6724INTERCEPTOR(SIZE_T, wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len, 6725 void *locale) { 6726 STRXFRM_INTERCEPTOR_IMPL(wcsxfrm_l, dest, src, len, locale); 6727} 6728 6729#define INIT_WCSXFRM \ 6730 COMMON_INTERCEPT_FUNCTION(wcsxfrm); \ 6731 COMMON_INTERCEPT_FUNCTION(wcsxfrm_l); 6732#else 6733#define INIT_WCSXFRM 6734#endif 6735 6736#if SANITIZER_INTERCEPT___WCSXFRM_L 6737INTERCEPTOR(SIZE_T, __wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len, 6738 void *locale) { 6739 STRXFRM_INTERCEPTOR_IMPL(__wcsxfrm_l, dest, src, len, locale); 6740} 6741 6742#define INIT___WCSXFRM_L COMMON_INTERCEPT_FUNCTION(__wcsxfrm_l); 6743#else 6744#define INIT___WCSXFRM_L 6745#endif 6746 6747#if SANITIZER_INTERCEPT_ACCT 6748INTERCEPTOR(int, acct, const char *file) { 6749 void *ctx; 6750 COMMON_INTERCEPTOR_ENTER(ctx, acct, file); 6751 if (file) 6752 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, REAL(strlen)(file) + 1); 6753 return REAL(acct)(file); 6754} 6755#define INIT_ACCT COMMON_INTERCEPT_FUNCTION(acct) 6756#else 6757#define INIT_ACCT 6758#endif 6759 6760#if SANITIZER_INTERCEPT_USER_FROM_UID 6761INTERCEPTOR(const char *, user_from_uid, u32 uid, int nouser) { 6762 void *ctx; 6763 const char *user; 6764 COMMON_INTERCEPTOR_ENTER(ctx, user_from_uid, uid, nouser); 6765 user = REAL(user_from_uid)(uid, nouser); 6766 if (user) 6767 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, user, REAL(strlen)(user) + 1); 6768 return user; 6769} 6770#define INIT_USER_FROM_UID COMMON_INTERCEPT_FUNCTION(user_from_uid) 6771#else 6772#define INIT_USER_FROM_UID 6773#endif 6774 6775#if SANITIZER_INTERCEPT_UID_FROM_USER 6776INTERCEPTOR(int, uid_from_user, const char *name, u32 *uid) { 6777 void *ctx; 6778 int res; 6779 COMMON_INTERCEPTOR_ENTER(ctx, uid_from_user, name, uid); 6780 if (name) 6781 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 6782 res = REAL(uid_from_user)(name, uid); 6783 if (uid) 6784 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, uid, sizeof(*uid)); 6785 return res; 6786} 6787#define INIT_UID_FROM_USER COMMON_INTERCEPT_FUNCTION(uid_from_user) 6788#else 6789#define INIT_UID_FROM_USER 6790#endif 6791 6792#if SANITIZER_INTERCEPT_GROUP_FROM_GID 6793INTERCEPTOR(const char *, group_from_gid, u32 gid, int nogroup) { 6794 void *ctx; 6795 const char *group; 6796 COMMON_INTERCEPTOR_ENTER(ctx, group_from_gid, gid, nogroup); 6797 group = REAL(group_from_gid)(gid, nogroup); 6798 if (group) 6799 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, group, REAL(strlen)(group) + 1); 6800 return group; 6801} 6802#define INIT_GROUP_FROM_GID COMMON_INTERCEPT_FUNCTION(group_from_gid) 6803#else 6804#define INIT_GROUP_FROM_GID 6805#endif 6806 6807#if SANITIZER_INTERCEPT_GID_FROM_GROUP 6808INTERCEPTOR(int, gid_from_group, const char *group, u32 *gid) { 6809 void *ctx; 6810 int res; 6811 COMMON_INTERCEPTOR_ENTER(ctx, gid_from_group, group, gid); 6812 if (group) 6813 COMMON_INTERCEPTOR_READ_RANGE(ctx, group, REAL(strlen)(group) + 1); 6814 res = REAL(gid_from_group)(group, gid); 6815 if (gid) 6816 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, gid, sizeof(*gid)); 6817 return res; 6818} 6819#define INIT_GID_FROM_GROUP COMMON_INTERCEPT_FUNCTION(gid_from_group) 6820#else 6821#define INIT_GID_FROM_GROUP 6822#endif 6823 6824#if SANITIZER_INTERCEPT_ACCESS 6825INTERCEPTOR(int, access, const char *path, int mode) { 6826 void *ctx; 6827 COMMON_INTERCEPTOR_ENTER(ctx, access, path, mode); 6828 if (path) 6829 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 6830 return REAL(access)(path, mode); 6831} 6832#define INIT_ACCESS COMMON_INTERCEPT_FUNCTION(access) 6833#else 6834#define INIT_ACCESS 6835#endif 6836 6837#if SANITIZER_INTERCEPT_FACCESSAT 6838INTERCEPTOR(int, faccessat, int fd, const char *path, int mode, int flags) { 6839 void *ctx; 6840 COMMON_INTERCEPTOR_ENTER(ctx, faccessat, fd, path, mode, flags); 6841 if (path) 6842 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 6843 return REAL(faccessat)(fd, path, mode, flags); 6844} 6845#define INIT_FACCESSAT COMMON_INTERCEPT_FUNCTION(faccessat) 6846#else 6847#define INIT_FACCESSAT 6848#endif 6849 6850#if SANITIZER_INTERCEPT_GETGROUPLIST 6851INTERCEPTOR(int, getgrouplist, const char *name, u32 basegid, u32 *groups, 6852 int *ngroups) { 6853 void *ctx; 6854 int res; 6855 COMMON_INTERCEPTOR_ENTER(ctx, getgrouplist, name, basegid, groups, ngroups); 6856 if (name) 6857 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 6858 if (ngroups) 6859 COMMON_INTERCEPTOR_READ_RANGE(ctx, ngroups, sizeof(*ngroups)); 6860 res = REAL(getgrouplist)(name, basegid, groups, ngroups); 6861 if (!res && groups && ngroups) { 6862 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups)); 6863 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups)); 6864 } 6865 return res; 6866} 6867 6868#define INIT_GETGROUPLIST COMMON_INTERCEPT_FUNCTION(getgrouplist); 6869#else 6870#define INIT_GETGROUPLIST 6871#endif 6872 6873#if SANITIZER_INTERCEPT_GETGROUPMEMBERSHIP 6874INTERCEPTOR(int, getgroupmembership, const char *name, u32 basegid, u32 *groups, 6875 int maxgrp, int *ngroups) { 6876 void *ctx; 6877 int res; 6878 COMMON_INTERCEPTOR_ENTER(ctx, getgroupmembership, name, basegid, groups, 6879 maxgrp, ngroups); 6880 if (name) 6881 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 6882 res = REAL(getgroupmembership)(name, basegid, groups, maxgrp, ngroups); 6883 if (!res && groups && ngroups) { 6884 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups)); 6885 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups)); 6886 } 6887 return res; 6888} 6889 6890#define INIT_GETGROUPMEMBERSHIP COMMON_INTERCEPT_FUNCTION(getgroupmembership); 6891#else 6892#define INIT_GETGROUPMEMBERSHIP 6893#endif 6894 6895#if SANITIZER_INTERCEPT_READLINK 6896INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) { 6897 void* ctx; 6898 COMMON_INTERCEPTOR_ENTER(ctx, readlink, path, buf, bufsiz); 6899 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 6900 SSIZE_T res = REAL(readlink)(path, buf, bufsiz); 6901 if (res > 0) 6902 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); 6903 return res; 6904} 6905 6906#define INIT_READLINK COMMON_INTERCEPT_FUNCTION(readlink) 6907#else 6908#define INIT_READLINK 6909#endif 6910 6911#if SANITIZER_INTERCEPT_READLINKAT 6912INTERCEPTOR(SSIZE_T, readlinkat, int dirfd, const char *path, char *buf, 6913 SIZE_T bufsiz) { 6914 void* ctx; 6915 COMMON_INTERCEPTOR_ENTER(ctx, readlinkat, dirfd, path, buf, bufsiz); 6916 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 6917 SSIZE_T res = REAL(readlinkat)(dirfd, path, buf, bufsiz); 6918 if (res > 0) 6919 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); 6920 return res; 6921} 6922 6923#define INIT_READLINKAT COMMON_INTERCEPT_FUNCTION(readlinkat) 6924#else 6925#define INIT_READLINKAT 6926#endif 6927 6928#if SANITIZER_INTERCEPT_NAME_TO_HANDLE_AT 6929INTERCEPTOR(int, name_to_handle_at, int dirfd, const char *pathname, 6930 struct file_handle *handle, int *mount_id, int flags) { 6931 void* ctx; 6932 COMMON_INTERCEPTOR_ENTER(ctx, name_to_handle_at, dirfd, pathname, handle, 6933 mount_id, flags); 6934 COMMON_INTERCEPTOR_READ_RANGE(ctx, pathname, REAL(strlen)(pathname) + 1); 6935 6936 __sanitizer_file_handle *sanitizer_handle = 6937 reinterpret_cast<__sanitizer_file_handle*>(handle); 6938 COMMON_INTERCEPTOR_READ_RANGE( 6939 ctx, &sanitizer_handle->handle_bytes, 6940 sizeof(sanitizer_handle->handle_bytes)); 6941 6942 int res = REAL(name_to_handle_at)(dirfd, pathname, handle, mount_id, flags); 6943 if (!res) { 6944 COMMON_INTERCEPTOR_WRITE_RANGE( 6945 ctx, &sanitizer_handle->handle_bytes, 6946 sizeof(sanitizer_handle->handle_bytes)); 6947 COMMON_INTERCEPTOR_WRITE_RANGE( 6948 ctx, &sanitizer_handle->handle_type, 6949 sizeof(sanitizer_handle->handle_type)); 6950 COMMON_INTERCEPTOR_WRITE_RANGE( 6951 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes); 6952 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mount_id, sizeof(*mount_id)); 6953 } 6954 return res; 6955} 6956 6957#define INIT_NAME_TO_HANDLE_AT COMMON_INTERCEPT_FUNCTION(name_to_handle_at) 6958#else 6959#define INIT_NAME_TO_HANDLE_AT 6960#endif 6961 6962#if SANITIZER_INTERCEPT_OPEN_BY_HANDLE_AT 6963INTERCEPTOR(int, open_by_handle_at, int mount_fd, struct file_handle* handle, 6964 int flags) { 6965 void* ctx; 6966 COMMON_INTERCEPTOR_ENTER(ctx, open_by_handle_at, mount_fd, handle, flags); 6967 6968 __sanitizer_file_handle *sanitizer_handle = 6969 reinterpret_cast<__sanitizer_file_handle*>(handle); 6970 COMMON_INTERCEPTOR_READ_RANGE( 6971 ctx, &sanitizer_handle->handle_bytes, 6972 sizeof(sanitizer_handle->handle_bytes)); 6973 COMMON_INTERCEPTOR_READ_RANGE( 6974 ctx, &sanitizer_handle->handle_type, 6975 sizeof(sanitizer_handle->handle_type)); 6976 COMMON_INTERCEPTOR_READ_RANGE( 6977 ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes); 6978 6979 return REAL(open_by_handle_at)(mount_fd, handle, flags); 6980} 6981 6982#define INIT_OPEN_BY_HANDLE_AT COMMON_INTERCEPT_FUNCTION(open_by_handle_at) 6983#else 6984#define INIT_OPEN_BY_HANDLE_AT 6985#endif 6986 6987#if SANITIZER_INTERCEPT_STRLCPY 6988INTERCEPTOR(SIZE_T, strlcpy, char *dst, char *src, SIZE_T size) { 6989 void *ctx; 6990 SIZE_T res; 6991 COMMON_INTERCEPTOR_ENTER(ctx, strlcpy, dst, src, size); 6992 if (src) { 6993 // Keep strnlen as macro argument, as macro may ignore it. 6994 COMMON_INTERCEPTOR_READ_STRING( 6995 ctx, src, Min(internal_strnlen(src, size), size - 1) + 1); 6996 } 6997 res = REAL(strlcpy)(dst, src, size); 6998 COMMON_INTERCEPTOR_COPY_STRING(ctx, dst, src, REAL(strlen)(dst) + 1); 6999 return res; 7000} 7001 7002INTERCEPTOR(SIZE_T, strlcat, char *dst, char *src, SIZE_T size) { 7003 void *ctx; 7004 SIZE_T len = 0; 7005 COMMON_INTERCEPTOR_ENTER(ctx, strlcat, dst, src, size); 7006 // src is checked in the strlcpy() interceptor 7007 if (dst) { 7008 len = internal_strnlen(dst, size); 7009 COMMON_INTERCEPTOR_READ_STRING(ctx, dst, Min(len, size - 1) + 1); 7010 } 7011 // Reuse the rest of the code in the strlcpy() interceptor 7012 return WRAP(strlcpy)(dst + len, src, size - len) + len; 7013} 7014#define INIT_STRLCPY \ 7015 COMMON_INTERCEPT_FUNCTION(strlcpy); \ 7016 COMMON_INTERCEPT_FUNCTION(strlcat); 7017#else 7018#define INIT_STRLCPY 7019#endif 7020 7021#if SANITIZER_INTERCEPT_MMAP 7022INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags, int fd, 7023 OFF_T off) { 7024 void *ctx; 7025 if (common_flags()->detect_write_exec) 7026 ReportMmapWriteExec(prot); 7027 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7028 return (void *)internal_mmap(addr, sz, prot, flags, fd, off); 7029 COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off); 7030 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, off); 7031} 7032 7033INTERCEPTOR(int, mprotect, void *addr, SIZE_T sz, int prot) { 7034 void *ctx; 7035 if (common_flags()->detect_write_exec) 7036 ReportMmapWriteExec(prot); 7037 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7038 return (int)internal_mprotect(addr, sz, prot); 7039 COMMON_INTERCEPTOR_ENTER(ctx, mprotect, addr, sz, prot); 7040 MprotectMallocZones(addr, prot); 7041 return REAL(mprotect)(addr, sz, prot); 7042} 7043#define INIT_MMAP \ 7044 COMMON_INTERCEPT_FUNCTION(mmap); \ 7045 COMMON_INTERCEPT_FUNCTION(mprotect); 7046#else 7047#define INIT_MMAP 7048#endif 7049 7050#if SANITIZER_INTERCEPT_MMAP64 7051INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags, int fd, 7052 OFF64_T off) { 7053 void *ctx; 7054 if (common_flags()->detect_write_exec) 7055 ReportMmapWriteExec(prot); 7056 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7057 return (void *)internal_mmap(addr, sz, prot, flags, fd, off); 7058 COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off); 7059 COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap64, addr, sz, prot, flags, fd, off); 7060} 7061#define INIT_MMAP64 COMMON_INTERCEPT_FUNCTION(mmap64); 7062#else 7063#define INIT_MMAP64 7064#endif 7065 7066#if SANITIZER_INTERCEPT_DEVNAME 7067INTERCEPTOR(char *, devname, u64 dev, u32 type) { 7068 void *ctx; 7069 char *name; 7070 COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type); 7071 name = REAL(devname)(dev, type); 7072 if (name) 7073 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1); 7074 return name; 7075} 7076#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname); 7077#else 7078#define INIT_DEVNAME 7079#endif 7080 7081#if SANITIZER_INTERCEPT_DEVNAME_R 7082#if SANITIZER_NETBSD 7083#define DEVNAME_R_RETTYPE int 7084#define DEVNAME_R_SUCCESS(x) (!(x)) 7085#else 7086#define DEVNAME_R_RETTYPE char* 7087#define DEVNAME_R_SUCCESS(x) (x) 7088#endif 7089INTERCEPTOR(DEVNAME_R_RETTYPE, devname_r, u64 dev, u32 type, char *path, 7090 uptr len) { 7091 void *ctx; 7092 COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len); 7093 DEVNAME_R_RETTYPE res = REAL(devname_r)(dev, type, path, len); 7094 if (DEVNAME_R_SUCCESS(res)) 7095 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, REAL(strlen)(path) + 1); 7096 return res; 7097} 7098#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r); 7099#else 7100#define INIT_DEVNAME_R 7101#endif 7102 7103#if SANITIZER_INTERCEPT_FGETLN 7104INTERCEPTOR(char *, fgetln, __sanitizer_FILE *stream, SIZE_T *len) { 7105 void *ctx; 7106 COMMON_INTERCEPTOR_ENTER(ctx, fgetln, stream, len); 7107 char *str = REAL(fgetln)(stream, len); 7108 if (str && len) { 7109 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 7110 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, *len); 7111 } 7112 return str; 7113} 7114#define INIT_FGETLN COMMON_INTERCEPT_FUNCTION(fgetln) 7115#else 7116#define INIT_FGETLN 7117#endif 7118 7119#if SANITIZER_INTERCEPT_STRMODE 7120INTERCEPTOR(void, strmode, u32 mode, char *bp) { 7121 void *ctx; 7122 COMMON_INTERCEPTOR_ENTER(ctx, strmode, mode, bp); 7123 REAL(strmode)(mode, bp); 7124 if (bp) 7125 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, bp, REAL(strlen)(bp) + 1); 7126} 7127#define INIT_STRMODE COMMON_INTERCEPT_FUNCTION(strmode) 7128#else 7129#define INIT_STRMODE 7130#endif 7131 7132#if SANITIZER_INTERCEPT_TTYENT 7133INTERCEPTOR(struct __sanitizer_ttyent *, getttyent, void) { 7134 void *ctx; 7135 COMMON_INTERCEPTOR_ENTER(ctx, getttyent); 7136 struct __sanitizer_ttyent *ttyent = REAL(getttyent)(); 7137 if (ttyent) 7138 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz); 7139 return ttyent; 7140} 7141INTERCEPTOR(struct __sanitizer_ttyent *, getttynam, char *name) { 7142 void *ctx; 7143 COMMON_INTERCEPTOR_ENTER(ctx, getttynam, name); 7144 if (name) 7145 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 7146 struct __sanitizer_ttyent *ttyent = REAL(getttynam)(name); 7147 if (ttyent) 7148 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz); 7149 return ttyent; 7150} 7151INTERCEPTOR(int, setttyentpath, char *path) { 7152 void *ctx; 7153 COMMON_INTERCEPTOR_ENTER(ctx, setttyentpath, path); 7154 if (path) 7155 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 7156 return REAL(setttyentpath)(path); 7157} 7158#define INIT_TTYENT \ 7159 COMMON_INTERCEPT_FUNCTION(getttyent); \ 7160 COMMON_INTERCEPT_FUNCTION(getttynam); \ 7161 COMMON_INTERCEPT_FUNCTION(setttyentpath) 7162#else 7163#define INIT_TTYENT 7164#endif 7165 7166#if SANITIZER_INTERCEPT_PROTOENT 7167INTERCEPTOR(struct __sanitizer_protoent *, getprotoent) { 7168 void *ctx; 7169 COMMON_INTERCEPTOR_ENTER(ctx, getprotoent); 7170 struct __sanitizer_protoent *p = REAL(getprotoent)(); 7171 if (p) { 7172 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 7173 7174 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, REAL(strlen)(p->p_name) + 1); 7175 7176 SIZE_T pp_size = 1; // One handles the trailing \0 7177 7178 for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size) 7179 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, REAL(strlen)(*pp) + 1); 7180 7181 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, 7182 pp_size * sizeof(char **)); 7183 } 7184 return p; 7185} 7186 7187INTERCEPTOR(struct __sanitizer_protoent *, getprotobyname, const char *name) { 7188 void *ctx; 7189 COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname, name); 7190 if (name) 7191 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 7192 struct __sanitizer_protoent *p = REAL(getprotobyname)(name); 7193 if (p) { 7194 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 7195 7196 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, REAL(strlen)(p->p_name) + 1); 7197 7198 SIZE_T pp_size = 1; // One handles the trailing \0 7199 7200 for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size) 7201 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, REAL(strlen)(*pp) + 1); 7202 7203 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, 7204 pp_size * sizeof(char **)); 7205 } 7206 return p; 7207} 7208 7209INTERCEPTOR(struct __sanitizer_protoent *, getprotobynumber, int proto) { 7210 void *ctx; 7211 COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber, proto); 7212 struct __sanitizer_protoent *p = REAL(getprotobynumber)(proto); 7213 if (p) { 7214 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); 7215 7216 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, REAL(strlen)(p->p_name) + 1); 7217 7218 SIZE_T pp_size = 1; // One handles the trailing \0 7219 7220 for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size) 7221 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, REAL(strlen)(*pp) + 1); 7222 7223 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, 7224 pp_size * sizeof(char **)); 7225 } 7226 return p; 7227} 7228#define INIT_PROTOENT \ 7229 COMMON_INTERCEPT_FUNCTION(getprotoent); \ 7230 COMMON_INTERCEPT_FUNCTION(getprotobyname); \ 7231 COMMON_INTERCEPT_FUNCTION(getprotobynumber) 7232#else 7233#define INIT_PROTOENT 7234#endif 7235 7236#if SANITIZER_INTERCEPT_NETENT 7237INTERCEPTOR(struct __sanitizer_netent *, getnetent) { 7238 void *ctx; 7239 COMMON_INTERCEPTOR_ENTER(ctx, getnetent); 7240 struct __sanitizer_netent *n = REAL(getnetent)(); 7241 if (n) { 7242 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 7243 7244 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, REAL(strlen)(n->n_name) + 1); 7245 7246 SIZE_T nn_size = 1; // One handles the trailing \0 7247 7248 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) 7249 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, REAL(strlen)(*nn) + 1); 7250 7251 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, 7252 nn_size * sizeof(char **)); 7253 } 7254 return n; 7255} 7256 7257INTERCEPTOR(struct __sanitizer_netent *, getnetbyname, const char *name) { 7258 void *ctx; 7259 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyname, name); 7260 if (name) 7261 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 7262 struct __sanitizer_netent *n = REAL(getnetbyname)(name); 7263 if (n) { 7264 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 7265 7266 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, REAL(strlen)(n->n_name) + 1); 7267 7268 SIZE_T nn_size = 1; // One handles the trailing \0 7269 7270 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) 7271 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, REAL(strlen)(*nn) + 1); 7272 7273 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, 7274 nn_size * sizeof(char **)); 7275 } 7276 return n; 7277} 7278 7279INTERCEPTOR(struct __sanitizer_netent *, getnetbyaddr, u32 net, int type) { 7280 void *ctx; 7281 COMMON_INTERCEPTOR_ENTER(ctx, getnetbyaddr, net, type); 7282 struct __sanitizer_netent *n = REAL(getnetbyaddr)(net, type); 7283 if (n) { 7284 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); 7285 7286 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, REAL(strlen)(n->n_name) + 1); 7287 7288 SIZE_T nn_size = 1; // One handles the trailing \0 7289 7290 for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) 7291 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, REAL(strlen)(*nn) + 1); 7292 7293 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, 7294 nn_size * sizeof(char **)); 7295 } 7296 return n; 7297} 7298#define INIT_NETENT \ 7299 COMMON_INTERCEPT_FUNCTION(getnetent); \ 7300 COMMON_INTERCEPT_FUNCTION(getnetbyname); \ 7301 COMMON_INTERCEPT_FUNCTION(getnetbyaddr) 7302#else 7303#define INIT_NETENT 7304#endif 7305 7306#if SANITIZER_INTERCEPT_GETMNTINFO 7307INTERCEPTOR(int, getmntinfo, void **mntbufp, int flags) { 7308 void *ctx; 7309 COMMON_INTERCEPTOR_ENTER(ctx, getmntinfo, mntbufp, flags); 7310 int cnt = REAL(getmntinfo)(mntbufp, flags); 7311 if (cnt > 0 && mntbufp) { 7312 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mntbufp, sizeof(void *)); 7313 if (*mntbufp) 7314#if SANITIZER_NETBSD 7315 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statvfs_sz); 7316#else 7317 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statfs_sz); 7318#endif 7319 } 7320 return cnt; 7321} 7322#define INIT_GETMNTINFO COMMON_INTERCEPT_FUNCTION(getmntinfo) 7323#else 7324#define INIT_GETMNTINFO 7325#endif 7326 7327#if SANITIZER_INTERCEPT_MI_VECTOR_HASH 7328INTERCEPTOR(void, mi_vector_hash, const void *key, SIZE_T len, u32 seed, 7329 u32 hashes[3]) { 7330 void *ctx; 7331 COMMON_INTERCEPTOR_ENTER(ctx, mi_vector_hash, key, len, seed, hashes); 7332 if (key) 7333 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, len); 7334 REAL(mi_vector_hash)(key, len, seed, hashes); 7335 if (hashes) 7336 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hashes, sizeof(hashes[0]) * 3); 7337} 7338#define INIT_MI_VECTOR_HASH COMMON_INTERCEPT_FUNCTION(mi_vector_hash) 7339#else 7340#define INIT_MI_VECTOR_HASH 7341#endif 7342 7343#if SANITIZER_INTERCEPT_SETVBUF 7344INTERCEPTOR(int, setvbuf, __sanitizer_FILE *stream, char *buf, int mode, 7345 SIZE_T size) { 7346 void *ctx; 7347 COMMON_INTERCEPTOR_ENTER(ctx, setvbuf, stream, buf, mode, size); 7348 int ret = REAL(setvbuf)(stream, buf, mode, size); 7349 if (buf) 7350 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size); 7351 if (stream) 7352 unpoison_file(stream); 7353 return ret; 7354} 7355 7356INTERCEPTOR(void, setbuf, __sanitizer_FILE *stream, char *buf) { 7357 void *ctx; 7358 COMMON_INTERCEPTOR_ENTER(ctx, setbuf, stream, buf); 7359 REAL(setbuf)(stream, buf); 7360 if (buf) { 7361 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz); 7362 } 7363 if (stream) 7364 unpoison_file(stream); 7365} 7366 7367INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf, int mode) { 7368 void *ctx; 7369 COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, mode); 7370 REAL(setbuffer)(stream, buf, mode); 7371 if (buf) { 7372 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz); 7373 } 7374 if (stream) 7375 unpoison_file(stream); 7376} 7377 7378INTERCEPTOR(void, setlinebuf, __sanitizer_FILE *stream) { 7379 void *ctx; 7380 COMMON_INTERCEPTOR_ENTER(ctx, setlinebuf, stream); 7381 REAL(setlinebuf)(stream); 7382 if (stream) 7383 unpoison_file(stream); 7384} 7385#define INIT_SETVBUF COMMON_INTERCEPT_FUNCTION(setvbuf); \ 7386 COMMON_INTERCEPT_FUNCTION(setbuf); \ 7387 COMMON_INTERCEPT_FUNCTION(setbuffer); \ 7388 COMMON_INTERCEPT_FUNCTION(setlinebuf) 7389#else 7390#define INIT_SETVBUF 7391#endif 7392 7393#if SANITIZER_INTERCEPT_GETVFSSTAT 7394INTERCEPTOR(int, getvfsstat, void *buf, SIZE_T bufsize, int flags) { 7395 void *ctx; 7396 COMMON_INTERCEPTOR_ENTER(ctx, getvfsstat, buf, bufsize, flags); 7397 int ret = REAL(getvfsstat)(buf, bufsize, flags); 7398 if (buf && ret > 0) 7399 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, ret * struct_statvfs_sz); 7400 return ret; 7401} 7402#define INIT_GETVFSSTAT COMMON_INTERCEPT_FUNCTION(getvfsstat) 7403#else 7404#define INIT_GETVFSSTAT 7405#endif 7406 7407#if SANITIZER_INTERCEPT_REGEX 7408INTERCEPTOR(int, regcomp, void *preg, const char *pattern, int cflags) { 7409 void *ctx; 7410 COMMON_INTERCEPTOR_ENTER(ctx, regcomp, preg, pattern, cflags); 7411 if (pattern) 7412 COMMON_INTERCEPTOR_READ_RANGE(ctx, pattern, REAL(strlen)(pattern) + 1); 7413 int res = REAL(regcomp)(preg, pattern, cflags); 7414 if (!res) 7415 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, preg, struct_regex_sz); 7416 return res; 7417} 7418INTERCEPTOR(int, regexec, const void *preg, const char *string, SIZE_T nmatch, 7419 struct __sanitizer_regmatch *pmatch[], int eflags) { 7420 void *ctx; 7421 COMMON_INTERCEPTOR_ENTER(ctx, regexec, preg, string, nmatch, pmatch, eflags); 7422 if (preg) 7423 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); 7424 if (string) 7425 COMMON_INTERCEPTOR_READ_RANGE(ctx, string, REAL(strlen)(string) + 1); 7426 int res = REAL(regexec)(preg, string, nmatch, pmatch, eflags); 7427 if (!res && pmatch) 7428 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pmatch, nmatch * struct_regmatch_sz); 7429 return res; 7430} 7431INTERCEPTOR(SIZE_T, regerror, int errcode, const void *preg, char *errbuf, 7432 SIZE_T errbuf_size) { 7433 void *ctx; 7434 COMMON_INTERCEPTOR_ENTER(ctx, regerror, errcode, preg, errbuf, errbuf_size); 7435 if (preg) 7436 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); 7437 SIZE_T res = REAL(regerror)(errcode, preg, errbuf, errbuf_size); 7438 if (errbuf) 7439 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errbuf, REAL(strlen)(errbuf) + 1); 7440 return res; 7441} 7442INTERCEPTOR(void, regfree, const void *preg) { 7443 void *ctx; 7444 COMMON_INTERCEPTOR_ENTER(ctx, regfree, preg); 7445 if (preg) 7446 COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); 7447 REAL(regfree)(preg); 7448} 7449#define INIT_REGEX \ 7450 COMMON_INTERCEPT_FUNCTION(regcomp); \ 7451 COMMON_INTERCEPT_FUNCTION(regexec); \ 7452 COMMON_INTERCEPT_FUNCTION(regerror); \ 7453 COMMON_INTERCEPT_FUNCTION(regfree); 7454#else 7455#define INIT_REGEX 7456#endif 7457 7458#if SANITIZER_INTERCEPT_REGEXSUB 7459INTERCEPTOR(SSIZE_T, regnsub, char *buf, SIZE_T bufsiz, const char *sub, 7460 const struct __sanitizer_regmatch *rm, const char *str) { 7461 void *ctx; 7462 COMMON_INTERCEPTOR_ENTER(ctx, regnsub, buf, bufsiz, sub, rm, str); 7463 if (sub) 7464 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, REAL(strlen)(sub) + 1); 7465 // The implementation demands and hardcodes 10 elements 7466 if (rm) 7467 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz); 7468 if (str) 7469 COMMON_INTERCEPTOR_READ_RANGE(ctx, str, REAL(strlen)(str) + 1); 7470 SSIZE_T res = REAL(regnsub)(buf, bufsiz, sub, rm, str); 7471 if (res > 0 && buf) 7472 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, REAL(strlen)(buf) + 1); 7473 return res; 7474} 7475INTERCEPTOR(SSIZE_T, regasub, char **buf, const char *sub, 7476 const struct __sanitizer_regmatch *rm, const char *sstr) { 7477 void *ctx; 7478 COMMON_INTERCEPTOR_ENTER(ctx, regasub, buf, sub, rm, sstr); 7479 if (sub) 7480 COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, REAL(strlen)(sub) + 1); 7481 // Hardcode 10 elements as this is hardcoded size 7482 if (rm) 7483 COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz); 7484 if (sstr) 7485 COMMON_INTERCEPTOR_READ_RANGE(ctx, sstr, REAL(strlen)(sstr) + 1); 7486 SSIZE_T res = REAL(regasub)(buf, sub, rm, sstr); 7487 if (res > 0 && buf) { 7488 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sizeof(char *)); 7489 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *buf, REAL(strlen)(*buf) + 1); 7490 } 7491 return res; 7492} 7493 7494#define INIT_REGEXSUB \ 7495 COMMON_INTERCEPT_FUNCTION(regnsub); \ 7496 COMMON_INTERCEPT_FUNCTION(regasub); 7497#else 7498#define INIT_REGEXSUB 7499#endif 7500 7501#if SANITIZER_INTERCEPT_FTS 7502INTERCEPTOR(void *, fts_open, char *const *path_argv, int options, 7503 int (*compar)(void **, void **)) { 7504 void *ctx; 7505 COMMON_INTERCEPTOR_ENTER(ctx, fts_open, path_argv, options, compar); 7506 if (path_argv) { 7507 for (char *const *pa = path_argv; ; ++pa) { 7508 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); 7509 if (!*pa) 7510 break; 7511 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, REAL(strlen)(*pa) + 1); 7512 } 7513 } 7514 // TODO(kamil): handle compar callback 7515 void *fts = REAL(fts_open)(path_argv, options, compar); 7516 if (fts) 7517 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, fts, struct_FTS_sz); 7518 return fts; 7519} 7520 7521INTERCEPTOR(void *, fts_read, void *ftsp) { 7522 void *ctx; 7523 COMMON_INTERCEPTOR_ENTER(ctx, fts_read, ftsp); 7524 if (ftsp) 7525 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 7526 void *ftsent = REAL(fts_read)(ftsp); 7527 if (ftsent) 7528 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz); 7529 return ftsent; 7530} 7531 7532INTERCEPTOR(void *, fts_children, void *ftsp, int options) { 7533 void *ctx; 7534 COMMON_INTERCEPTOR_ENTER(ctx, fts_children, ftsp, options); 7535 if (ftsp) 7536 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 7537 void *ftsent = REAL(fts_children)(ftsp, options); 7538 if (ftsent) 7539 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz); 7540 return ftsent; 7541} 7542 7543INTERCEPTOR(int, fts_set, void *ftsp, void *f, int options) { 7544 void *ctx; 7545 COMMON_INTERCEPTOR_ENTER(ctx, fts_set, ftsp, f, options); 7546 if (ftsp) 7547 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 7548 if (f) 7549 COMMON_INTERCEPTOR_READ_RANGE(ctx, f, struct_FTSENT_sz); 7550 return REAL(fts_set)(ftsp, f, options); 7551} 7552 7553INTERCEPTOR(int, fts_close, void *ftsp) { 7554 void *ctx; 7555 COMMON_INTERCEPTOR_ENTER(ctx, fts_close, ftsp); 7556 if (ftsp) 7557 COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); 7558 return REAL(fts_close)(ftsp); 7559} 7560#define INIT_FTS \ 7561 COMMON_INTERCEPT_FUNCTION(fts_open); \ 7562 COMMON_INTERCEPT_FUNCTION(fts_read); \ 7563 COMMON_INTERCEPT_FUNCTION(fts_children); \ 7564 COMMON_INTERCEPT_FUNCTION(fts_set); \ 7565 COMMON_INTERCEPT_FUNCTION(fts_close); 7566#else 7567#define INIT_FTS 7568#endif 7569 7570#if SANITIZER_INTERCEPT_SYSCTL 7571INTERCEPTOR(int, sysctl, int *name, unsigned int namelen, void *oldp, 7572 SIZE_T *oldlenp, void *newp, SIZE_T newlen) { 7573 void *ctx; 7574 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7575 return internal_sysctl(name, namelen, oldp, oldlenp, newp, newlen); 7576 COMMON_INTERCEPTOR_ENTER(ctx, sysctl, name, namelen, oldp, oldlenp, newp, 7577 newlen); 7578 if (name) 7579 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, namelen * sizeof(*name)); 7580 if (oldlenp) 7581 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 7582 if (newp && newlen) 7583 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen); 7584 int res = REAL(sysctl)(name, namelen, oldp, oldlenp, newp, newlen); 7585 if (!res) { 7586 if (oldlenp) { 7587 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 7588 if (oldp) 7589 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp); 7590 } 7591 } 7592 return res; 7593} 7594 7595INTERCEPTOR(int, sysctlbyname, char *sname, void *oldp, SIZE_T *oldlenp, 7596 void *newp, SIZE_T newlen) { 7597 void *ctx; 7598 if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) 7599 return internal_sysctlbyname(sname, oldp, oldlenp, newp, newlen); 7600 COMMON_INTERCEPTOR_ENTER(ctx, sysctlbyname, sname, oldp, oldlenp, newp, 7601 newlen); 7602 if (sname) 7603 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, REAL(strlen)(sname) + 1); 7604 if (oldlenp) 7605 COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 7606 if (newp && newlen) 7607 COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen); 7608 int res = REAL(sysctlbyname)(sname, oldp, oldlenp, newp, newlen); 7609 if (!res) { 7610 if (oldlenp) { 7611 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp)); 7612 if (oldp) 7613 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp); 7614 } 7615 } 7616 return res; 7617} 7618 7619INTERCEPTOR(int, sysctlnametomib, const char *sname, int *name, 7620 SIZE_T *namelenp) { 7621 void *ctx; 7622 COMMON_INTERCEPTOR_ENTER(ctx, sysctlnametomib, sname, name, namelenp); 7623 if (sname) 7624 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, REAL(strlen)(sname) + 1); 7625 if (namelenp) 7626 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp)); 7627 int res = REAL(sysctlnametomib)(sname, name, namelenp); 7628 if (!res) { 7629 if (namelenp) { 7630 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp)); 7631 if (name) 7632 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name)); 7633 } 7634 } 7635 return res; 7636} 7637 7638#define INIT_SYSCTL \ 7639 COMMON_INTERCEPT_FUNCTION(sysctl); \ 7640 COMMON_INTERCEPT_FUNCTION(sysctlbyname); \ 7641 COMMON_INTERCEPT_FUNCTION(sysctlnametomib); 7642#else 7643#define INIT_SYSCTL 7644#endif 7645 7646#if SANITIZER_INTERCEPT_ASYSCTL 7647INTERCEPTOR(void *, asysctl, const int *name, SIZE_T namelen, SIZE_T *len) { 7648 void *ctx; 7649 COMMON_INTERCEPTOR_ENTER(ctx, asysctl, name, namelen, len); 7650 if (name) 7651 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, sizeof(*name) * namelen); 7652 void *res = REAL(asysctl)(name, namelen, len); 7653 if (res && len) { 7654 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 7655 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len); 7656 } 7657 return res; 7658} 7659 7660INTERCEPTOR(void *, asysctlbyname, const char *sname, SIZE_T *len) { 7661 void *ctx; 7662 COMMON_INTERCEPTOR_ENTER(ctx, asysctlbyname, sname, len); 7663 if (sname) 7664 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, REAL(strlen)(sname) + 1); 7665 void *res = REAL(asysctlbyname)(sname, len); 7666 if (res && len) { 7667 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 7668 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len); 7669 } 7670 return res; 7671} 7672#define INIT_ASYSCTL \ 7673 COMMON_INTERCEPT_FUNCTION(asysctl); \ 7674 COMMON_INTERCEPT_FUNCTION(asysctlbyname); 7675#else 7676#define INIT_ASYSCTL 7677#endif 7678 7679#if SANITIZER_INTERCEPT_SYSCTLGETMIBINFO 7680INTERCEPTOR(int, sysctlgetmibinfo, char *sname, int *name, 7681 unsigned int *namelenp, char *cname, SIZE_T *csz, void **rnode, 7682 int v) { 7683 void *ctx; 7684 COMMON_INTERCEPTOR_ENTER(ctx, sysctlgetmibinfo, sname, name, namelenp, cname, 7685 csz, rnode, v); 7686 if (sname) 7687 COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, REAL(strlen)(sname) + 1); 7688 if (namelenp) 7689 COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp)); 7690 if (csz) 7691 COMMON_INTERCEPTOR_READ_RANGE(ctx, csz, sizeof(*csz)); 7692 // Skip rnode, it's rarely used and not trivial to sanitize 7693 // It's also used mostly internally 7694 int res = REAL(sysctlgetmibinfo)(sname, name, namelenp, cname, csz, rnode, v); 7695 if (!res) { 7696 if (namelenp) { 7697 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp)); 7698 if (name) 7699 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name)); 7700 } 7701 if (csz) { 7702 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, csz, sizeof(*csz)); 7703 if (cname) 7704 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cname, *csz); 7705 } 7706 } 7707 return res; 7708} 7709#define INIT_SYSCTLGETMIBINFO \ 7710 COMMON_INTERCEPT_FUNCTION(sysctlgetmibinfo); 7711#else 7712#define INIT_SYSCTLGETMIBINFO 7713#endif 7714 7715#if SANITIZER_INTERCEPT_NL_LANGINFO 7716INTERCEPTOR(char *, nl_langinfo, long item) { 7717 void *ctx; 7718 COMMON_INTERCEPTOR_ENTER(ctx, nl_langinfo, item); 7719 char *ret = REAL(nl_langinfo)(item); 7720 if (ret) 7721 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, REAL(strlen)(ret) + 1); 7722 return ret; 7723} 7724#define INIT_NL_LANGINFO COMMON_INTERCEPT_FUNCTION(nl_langinfo) 7725#else 7726#define INIT_NL_LANGINFO 7727#endif 7728 7729#if SANITIZER_INTERCEPT_MODCTL 7730INTERCEPTOR(int, modctl, int operation, void *argp) { 7731 void *ctx; 7732 int ret; 7733 COMMON_INTERCEPTOR_ENTER(ctx, modctl, operation, argp); 7734 7735 if (operation == modctl_load) { 7736 if (argp) { 7737 __sanitizer_modctl_load_t *ml = (__sanitizer_modctl_load_t *)argp; 7738 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml, sizeof(*ml)); 7739 if (ml->ml_filename) 7740 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_filename, 7741 REAL(strlen)(ml->ml_filename) + 1); 7742 if (ml->ml_props) 7743 COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_props, ml->ml_propslen); 7744 } 7745 ret = REAL(modctl)(operation, argp); 7746 } else if (operation == modctl_unload) { 7747 if (argp) { 7748 const char *name = (const char *)argp; 7749 COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1); 7750 } 7751 ret = REAL(modctl)(operation, argp); 7752 } else if (operation == modctl_stat) { 7753 uptr iov_len; 7754 struct __sanitizer_iovec *iov = (struct __sanitizer_iovec *)argp; 7755 if (iov) { 7756 COMMON_INTERCEPTOR_READ_RANGE(ctx, iov, sizeof(*iov)); 7757 iov_len = iov->iov_len; 7758 } 7759 ret = REAL(modctl)(operation, argp); 7760 if (iov) 7761 COMMON_INTERCEPTOR_WRITE_RANGE( 7762 ctx, iov->iov_base, Min(iov_len, iov->iov_len)); 7763 } else if (operation == modctl_exists) 7764 ret = REAL(modctl)(operation, argp); 7765 else 7766 ret = REAL(modctl)(operation, argp); 7767 7768 return ret; 7769} 7770#define INIT_MODCTL COMMON_INTERCEPT_FUNCTION(modctl) 7771#else 7772#define INIT_MODCTL 7773#endif 7774 7775#if SANITIZER_INTERCEPT_STRTONUM 7776INTERCEPTOR(long long, strtonum, const char *nptr, long long minval, 7777 long long maxval, const char **errstr) { 7778 void *ctx; 7779 COMMON_INTERCEPTOR_ENTER(ctx, strtonum, nptr, minval, maxval, errstr); 7780 7781 // TODO(kamil): Implement strtoll as a common inteceptor 7782 char *real_endptr; 7783 long long ret = (long long)REAL(strtoimax)(nptr, &real_endptr, 10); 7784 StrtolFixAndCheck(ctx, nptr, nullptr, real_endptr, 10); 7785 7786 ret = REAL(strtonum)(nptr, minval, maxval, errstr); 7787 if (errstr) { 7788 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errstr, sizeof(const char *)); 7789 if (*errstr) 7790 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *errstr, REAL(strlen)(*errstr) + 1); 7791 } 7792 return ret; 7793} 7794#define INIT_STRTONUM COMMON_INTERCEPT_FUNCTION(strtonum) 7795#else 7796#define INIT_STRTONUM 7797#endif 7798 7799#if SANITIZER_INTERCEPT_FPARSELN 7800INTERCEPTOR(char *, fparseln, __sanitizer_FILE *stream, SIZE_T *len, 7801 SIZE_T *lineno, const char delim[3], int flags) { 7802 void *ctx; 7803 COMMON_INTERCEPTOR_ENTER(ctx, fparseln, stream, len, lineno, delim, flags); 7804 if (lineno) 7805 COMMON_INTERCEPTOR_READ_RANGE(ctx, lineno, sizeof(*lineno)); 7806 if (delim) 7807 COMMON_INTERCEPTOR_READ_RANGE(ctx, delim, sizeof(delim[0]) * 3); 7808 char *ret = REAL(fparseln)(stream, len, lineno, delim, flags); 7809 if (ret) { 7810 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, REAL(strlen)(ret) + 1); 7811 if (len) 7812 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); 7813 if (lineno) 7814 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineno, sizeof(*lineno)); 7815 } 7816 return ret; 7817} 7818#define INIT_FPARSELN COMMON_INTERCEPT_FUNCTION(fparseln) 7819#else 7820#define INIT_FPARSELN 7821#endif 7822 7823#if SANITIZER_INTERCEPT_STATVFS1 7824INTERCEPTOR(int, statvfs1, const char *path, void *buf, int flags) { 7825 void *ctx; 7826 COMMON_INTERCEPTOR_ENTER(ctx, statvfs1, path, buf, flags); 7827 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 7828 int res = REAL(statvfs1)(path, buf, flags); 7829 if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 7830 return res; 7831} 7832INTERCEPTOR(int, fstatvfs1, int fd, void *buf, int flags) { 7833 void *ctx; 7834 COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs1, fd, buf, flags); 7835 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 7836 int res = REAL(fstatvfs1)(fd, buf, flags); 7837 if (!res) { 7838 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); 7839 if (fd >= 0) 7840 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 7841 } 7842 return res; 7843} 7844#define INIT_STATVFS1 \ 7845 COMMON_INTERCEPT_FUNCTION(statvfs1); \ 7846 COMMON_INTERCEPT_FUNCTION(fstatvfs1); 7847#else 7848#define INIT_STATVFS1 7849#endif 7850 7851#if SANITIZER_INTERCEPT_STRTOI 7852INTERCEPTOR(INTMAX_T, strtoi, const char *nptr, char **endptr, int base, 7853 INTMAX_T low, INTMAX_T high, int *rstatus) { 7854 void *ctx; 7855 COMMON_INTERCEPTOR_ENTER(ctx, strtoi, nptr, endptr, base, low, high, rstatus); 7856 char *real_endptr; 7857 INTMAX_T ret = REAL(strtoi)(nptr, &real_endptr, base, low, high, rstatus); 7858 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 7859 if (rstatus) 7860 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus)); 7861 return ret; 7862} 7863 7864INTERCEPTOR(UINTMAX_T, strtou, const char *nptr, char **endptr, int base, 7865 UINTMAX_T low, UINTMAX_T high, int *rstatus) { 7866 void *ctx; 7867 COMMON_INTERCEPTOR_ENTER(ctx, strtou, nptr, endptr, base, low, high, rstatus); 7868 char *real_endptr; 7869 UINTMAX_T ret = REAL(strtou)(nptr, &real_endptr, base, low, high, rstatus); 7870 StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); 7871 if (rstatus) 7872 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus)); 7873 return ret; 7874} 7875#define INIT_STRTOI \ 7876 COMMON_INTERCEPT_FUNCTION(strtoi); \ 7877 COMMON_INTERCEPT_FUNCTION(strtou) 7878#else 7879#define INIT_STRTOI 7880#endif 7881 7882#if SANITIZER_INTERCEPT_CAPSICUM 7883#define CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights, ...) \ 7884 { \ 7885 void *ctx; \ 7886 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_init, rights, ##__VA_ARGS__); \ 7887 if (rights) \ 7888 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 7889 __sanitizer_cap_rights_t *ret = \ 7890 REAL(cap_rights_init)(rights, ##__VA_ARGS__); \ 7891 if (ret) \ 7892 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ 7893 return ret; \ 7894 } 7895 7896#define CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights, ...) \ 7897 { \ 7898 void *ctx; \ 7899 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_set, rights, ##__VA_ARGS__); \ 7900 if (rights) \ 7901 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 7902 __sanitizer_cap_rights_t *ret = \ 7903 REAL(cap_rights_set)(rights, ##__VA_ARGS__); \ 7904 if (ret) \ 7905 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ 7906 return ret; \ 7907 } 7908 7909#define CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights, ...) \ 7910 { \ 7911 void *ctx; \ 7912 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_clear, rights, ##__VA_ARGS__); \ 7913 if (rights) \ 7914 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 7915 __sanitizer_cap_rights_t *ret = \ 7916 REAL(cap_rights_clear)(rights, ##__VA_ARGS__); \ 7917 if (ret) \ 7918 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ 7919 return ret; \ 7920 } 7921 7922#define CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights, ...) \ 7923 { \ 7924 void *ctx; \ 7925 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_set, rights, ##__VA_ARGS__); \ 7926 if (rights) \ 7927 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ 7928 return REAL(cap_rights_is_set)(rights, ##__VA_ARGS__); \ 7929 } 7930 7931INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_init, 7932 __sanitizer_cap_rights_t *rights) { 7933 CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights); 7934} 7935 7936INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_set, 7937 __sanitizer_cap_rights_t *rights) { 7938 CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights); 7939} 7940 7941INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_clear, 7942 __sanitizer_cap_rights_t *rights) { 7943 CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights); 7944} 7945 7946INTERCEPTOR(bool, cap_rights_is_set, 7947 __sanitizer_cap_rights_t *rights) { 7948 CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights); 7949} 7950 7951INTERCEPTOR(int, cap_rights_limit, int fd, 7952 const __sanitizer_cap_rights_t *rights) { 7953 void *ctx; 7954 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_limit, fd, rights); 7955 if (rights) 7956 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); 7957 7958 return REAL(cap_rights_limit)(fd, rights); 7959} 7960 7961INTERCEPTOR(int, cap_rights_get, int fd, __sanitizer_cap_rights_t *rights) { 7962 void *ctx; 7963 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_get, fd, rights); 7964 int ret = REAL(cap_rights_get)(fd, rights); 7965 if (!ret && rights) 7966 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rights, sizeof(*rights)); 7967 7968 return ret; 7969} 7970 7971INTERCEPTOR(bool, cap_rights_is_valid, const __sanitizer_cap_rights_t *rights) { 7972 void *ctx; 7973 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_valid, rights); 7974 if (rights) 7975 COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); 7976 7977 return REAL(cap_rights_is_valid(rights)); 7978} 7979 7980INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_merge, 7981 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) { 7982 void *ctx; 7983 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_merge, dst, src); 7984 if (src) 7985 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 7986 7987 __sanitizer_cap_rights *ret = REAL(cap_rights_merge)(dst, src); 7988 if (dst) 7989 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); 7990 7991 return ret; 7992} 7993 7994INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_remove, 7995 __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) { 7996 void *ctx; 7997 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_remove, dst, src); 7998 if (src) 7999 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); 8000 8001 __sanitizer_cap_rights *ret = REAL(cap_rights_remove)(dst, src); 8002 if (dst) 8003 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); 8004 8005 return ret; 8006} 8007 8008INTERCEPTOR(bool, cap_rights_contains, const __sanitizer_cap_rights *big, 8009 const __sanitizer_cap_rights *little) { 8010 void *ctx; 8011 COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_contains, big, little); 8012 if (little) 8013 COMMON_INTERCEPTOR_READ_RANGE(ctx, little, sizeof(*little)); 8014 if (big) 8015 COMMON_INTERCEPTOR_READ_RANGE(ctx, big, sizeof(*big)); 8016 8017 return REAL(cap_rights_contains)(big, little); 8018} 8019 8020INTERCEPTOR(int, cap_ioctls_limit, int fd, const uptr *cmds, SIZE_T ncmds) { 8021 void *ctx; 8022 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_limit, fd, cmds, ncmds); 8023 if (cmds) 8024 COMMON_INTERCEPTOR_READ_RANGE(ctx, cmds, sizeof(*cmds) * ncmds); 8025 8026 return REAL(cap_ioctls_limit)(fd, cmds, ncmds); 8027} 8028 8029INTERCEPTOR(int, cap_ioctls_get, int fd, uptr *cmds, SIZE_T maxcmds) { 8030 void *ctx; 8031 COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_get, fd, cmds, maxcmds); 8032 int ret = REAL(cap_ioctls_get)(fd, cmds, maxcmds); 8033 if (!ret && cmds) 8034 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cmds, sizeof(*cmds) * maxcmds); 8035 8036 return ret; 8037} 8038#define INIT_CAPSICUM \ 8039 COMMON_INTERCEPT_FUNCTION(cap_rights_init); \ 8040 COMMON_INTERCEPT_FUNCTION(cap_rights_set); \ 8041 COMMON_INTERCEPT_FUNCTION(cap_rights_clear); \ 8042 COMMON_INTERCEPT_FUNCTION(cap_rights_is_set); \ 8043 COMMON_INTERCEPT_FUNCTION(cap_rights_get); \ 8044 COMMON_INTERCEPT_FUNCTION(cap_rights_limit); \ 8045 COMMON_INTERCEPT_FUNCTION(cap_rights_contains); \ 8046 COMMON_INTERCEPT_FUNCTION(cap_rights_remove); \ 8047 COMMON_INTERCEPT_FUNCTION(cap_rights_merge); \ 8048 COMMON_INTERCEPT_FUNCTION(cap_rights_is_valid); \ 8049 COMMON_INTERCEPT_FUNCTION(cap_ioctls_get); \ 8050 COMMON_INTERCEPT_FUNCTION(cap_ioctls_limit) 8051#else 8052#define INIT_CAPSICUM 8053#endif 8054 8055#if SANITIZER_INTERCEPT_SHA1 8056INTERCEPTOR(void, SHA1Init, void *context) { 8057 void *ctx; 8058 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Init, context); 8059 REAL(SHA1Init)(context); 8060 if (context) 8061 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz); 8062} 8063INTERCEPTOR(void, SHA1Update, void *context, const u8 *data, unsigned len) { 8064 void *ctx; 8065 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Update, context, data, len); 8066 if (data && len > 0) 8067 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8068 if (context) 8069 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); 8070 REAL(SHA1Update)(context, data, len); 8071 if (context) 8072 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz); 8073} 8074INTERCEPTOR(void, SHA1Final, u8 digest[20], void *context) { 8075 void *ctx; 8076 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Final, digest, context); 8077 if (context) 8078 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); 8079 REAL(SHA1Final)(digest, context); 8080 if (digest) 8081 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20); 8082} 8083INTERCEPTOR(void, SHA1Transform, u32 state[5], u8 buffer[64]) { 8084 void *ctx; 8085 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Transform, state, buffer); 8086 if (state) 8087 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5); 8088 if (buffer) 8089 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u8) * 64); 8090 REAL(SHA1Transform)(state, buffer); 8091 if (state) 8092 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5); 8093} 8094INTERCEPTOR(char *, SHA1End, void *context, char *buf) { 8095 void *ctx; 8096 COMMON_INTERCEPTOR_ENTER(ctx, SHA1End, context, buf); 8097 if (context) 8098 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); 8099 char *ret = REAL(SHA1End)(context, buf); 8100 if (ret) 8101 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8102 return ret; 8103} 8104INTERCEPTOR(char *, SHA1File, char *filename, char *buf) { 8105 void *ctx; 8106 COMMON_INTERCEPTOR_ENTER(ctx, SHA1File, filename, buf); 8107 if (filename) 8108 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8109 char *ret = REAL(SHA1File)(filename, buf); 8110 if (ret) 8111 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8112 return ret; 8113} 8114INTERCEPTOR(char *, SHA1FileChunk, char *filename, char *buf, OFF_T offset, 8115 OFF_T length) { 8116 void *ctx; 8117 COMMON_INTERCEPTOR_ENTER(ctx, SHA1FileChunk, filename, buf, offset, length); 8118 if (filename) 8119 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8120 char *ret = REAL(SHA1FileChunk)(filename, buf, offset, length); 8121 if (ret) 8122 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8123 return ret; 8124} 8125INTERCEPTOR(char *, SHA1Data, u8 *data, SIZE_T len, char *buf) { 8126 void *ctx; 8127 COMMON_INTERCEPTOR_ENTER(ctx, SHA1Data, data, len, buf); 8128 if (data) 8129 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8130 char *ret = REAL(SHA1Data)(data, len, buf); 8131 if (ret) 8132 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); 8133 return ret; 8134} 8135#define INIT_SHA1 \ 8136 COMMON_INTERCEPT_FUNCTION(SHA1Init); \ 8137 COMMON_INTERCEPT_FUNCTION(SHA1Update); \ 8138 COMMON_INTERCEPT_FUNCTION(SHA1Final); \ 8139 COMMON_INTERCEPT_FUNCTION(SHA1Transform); \ 8140 COMMON_INTERCEPT_FUNCTION(SHA1End); \ 8141 COMMON_INTERCEPT_FUNCTION(SHA1File); \ 8142 COMMON_INTERCEPT_FUNCTION(SHA1FileChunk); \ 8143 COMMON_INTERCEPT_FUNCTION(SHA1Data) 8144#else 8145#define INIT_SHA1 8146#endif 8147 8148#if SANITIZER_INTERCEPT_MD4 8149INTERCEPTOR(void, MD4Init, void *context) { 8150 void *ctx; 8151 COMMON_INTERCEPTOR_ENTER(ctx, MD4Init, context); 8152 REAL(MD4Init)(context); 8153 if (context) 8154 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz); 8155} 8156 8157INTERCEPTOR(void, MD4Update, void *context, const unsigned char *data, 8158 unsigned int len) { 8159 void *ctx; 8160 COMMON_INTERCEPTOR_ENTER(ctx, MD4Update, context, data, len); 8161 if (data && len > 0) 8162 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8163 if (context) 8164 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); 8165 REAL(MD4Update)(context, data, len); 8166 if (context) 8167 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz); 8168} 8169 8170INTERCEPTOR(void, MD4Final, unsigned char digest[16], void *context) { 8171 void *ctx; 8172 COMMON_INTERCEPTOR_ENTER(ctx, MD4Final, digest, context); 8173 if (context) 8174 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); 8175 REAL(MD4Final)(digest, context); 8176 if (digest) 8177 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); 8178} 8179 8180INTERCEPTOR(char *, MD4End, void *context, char *buf) { 8181 void *ctx; 8182 COMMON_INTERCEPTOR_ENTER(ctx, MD4End, context, buf); 8183 if (context) 8184 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); 8185 char *ret = REAL(MD4End)(context, buf); 8186 if (ret) 8187 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); 8188 return ret; 8189} 8190 8191INTERCEPTOR(char *, MD4File, const char *filename, char *buf) { 8192 void *ctx; 8193 COMMON_INTERCEPTOR_ENTER(ctx, MD4File, filename, buf); 8194 if (filename) 8195 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8196 char *ret = REAL(MD4File)(filename, buf); 8197 if (ret) 8198 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); 8199 return ret; 8200} 8201 8202INTERCEPTOR(char *, MD4Data, const unsigned char *data, unsigned int len, 8203 char *buf) { 8204 void *ctx; 8205 COMMON_INTERCEPTOR_ENTER(ctx, MD4Data, data, len, buf); 8206 if (data && len > 0) 8207 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8208 char *ret = REAL(MD4Data)(data, len, buf); 8209 if (ret) 8210 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); 8211 return ret; 8212} 8213 8214#define INIT_MD4 \ 8215 COMMON_INTERCEPT_FUNCTION(MD4Init); \ 8216 COMMON_INTERCEPT_FUNCTION(MD4Update); \ 8217 COMMON_INTERCEPT_FUNCTION(MD4Final); \ 8218 COMMON_INTERCEPT_FUNCTION(MD4End); \ 8219 COMMON_INTERCEPT_FUNCTION(MD4File); \ 8220 COMMON_INTERCEPT_FUNCTION(MD4Data) 8221#else 8222#define INIT_MD4 8223#endif 8224 8225#if SANITIZER_INTERCEPT_RMD160 8226INTERCEPTOR(void, RMD160Init, void *context) { 8227 void *ctx; 8228 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Init, context); 8229 REAL(RMD160Init)(context); 8230 if (context) 8231 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz); 8232} 8233INTERCEPTOR(void, RMD160Update, void *context, const u8 *data, unsigned len) { 8234 void *ctx; 8235 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Update, context, data, len); 8236 if (data && len > 0) 8237 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8238 if (context) 8239 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); 8240 REAL(RMD160Update)(context, data, len); 8241 if (context) 8242 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz); 8243} 8244INTERCEPTOR(void, RMD160Final, u8 digest[20], void *context) { 8245 void *ctx; 8246 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Final, digest, context); 8247 if (context) 8248 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); 8249 REAL(RMD160Final)(digest, context); 8250 if (digest) 8251 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20); 8252} 8253INTERCEPTOR(void, RMD160Transform, u32 state[5], u16 buffer[16]) { 8254 void *ctx; 8255 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Transform, state, buffer); 8256 if (state) 8257 COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5); 8258 if (buffer) 8259 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u32) * 16); 8260 REAL(RMD160Transform)(state, buffer); 8261 if (state) 8262 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5); 8263} 8264INTERCEPTOR(char *, RMD160End, void *context, char *buf) { 8265 void *ctx; 8266 COMMON_INTERCEPTOR_ENTER(ctx, RMD160End, context, buf); 8267 if (context) 8268 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); 8269 char *ret = REAL(RMD160End)(context, buf); 8270 if (ret) 8271 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8272 return ret; 8273} 8274INTERCEPTOR(char *, RMD160File, char *filename, char *buf) { 8275 void *ctx; 8276 COMMON_INTERCEPTOR_ENTER(ctx, RMD160File, filename, buf); 8277 if (filename) 8278 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8279 char *ret = REAL(RMD160File)(filename, buf); 8280 if (ret) 8281 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8282 return ret; 8283} 8284INTERCEPTOR(char *, RMD160FileChunk, char *filename, char *buf, OFF_T offset, 8285 OFF_T length) { 8286 void *ctx; 8287 COMMON_INTERCEPTOR_ENTER(ctx, RMD160FileChunk, filename, buf, offset, length); 8288 if (filename) 8289 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8290 char *ret = REAL(RMD160FileChunk)(filename, buf, offset, length); 8291 if (ret) 8292 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8293 return ret; 8294} 8295INTERCEPTOR(char *, RMD160Data, u8 *data, SIZE_T len, char *buf) { 8296 void *ctx; 8297 COMMON_INTERCEPTOR_ENTER(ctx, RMD160Data, data, len, buf); 8298 if (data && len > 0) 8299 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8300 char *ret = REAL(RMD160Data)(data, len, buf); 8301 if (ret) 8302 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); 8303 return ret; 8304} 8305#define INIT_RMD160 \ 8306 COMMON_INTERCEPT_FUNCTION(RMD160Init); \ 8307 COMMON_INTERCEPT_FUNCTION(RMD160Update); \ 8308 COMMON_INTERCEPT_FUNCTION(RMD160Final); \ 8309 COMMON_INTERCEPT_FUNCTION(RMD160Transform); \ 8310 COMMON_INTERCEPT_FUNCTION(RMD160End); \ 8311 COMMON_INTERCEPT_FUNCTION(RMD160File); \ 8312 COMMON_INTERCEPT_FUNCTION(RMD160FileChunk); \ 8313 COMMON_INTERCEPT_FUNCTION(RMD160Data) 8314#else 8315#define INIT_RMD160 8316#endif 8317 8318#if SANITIZER_INTERCEPT_MD5 8319INTERCEPTOR(void, MD5Init, void *context) { 8320 void *ctx; 8321 COMMON_INTERCEPTOR_ENTER(ctx, MD5Init, context); 8322 REAL(MD5Init)(context); 8323 if (context) 8324 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD5_CTX_sz); 8325} 8326 8327INTERCEPTOR(void, MD5Update, void *context, const unsigned char *data, 8328 unsigned int len) { 8329 void *ctx; 8330 COMMON_INTERCEPTOR_ENTER(ctx, MD5Update, context, data, len); 8331 if (data && len > 0) 8332 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8333 if (context) 8334 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz); 8335 REAL(MD5Update)(context, data, len); 8336 if (context) 8337 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD5_CTX_sz); 8338} 8339 8340INTERCEPTOR(void, MD5Final, unsigned char digest[16], void *context) { 8341 void *ctx; 8342 COMMON_INTERCEPTOR_ENTER(ctx, MD5Final, digest, context); 8343 if (context) 8344 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz); 8345 REAL(MD5Final)(digest, context); 8346 if (digest) 8347 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); 8348} 8349 8350INTERCEPTOR(char *, MD5End, void *context, char *buf) { 8351 void *ctx; 8352 COMMON_INTERCEPTOR_ENTER(ctx, MD5End, context, buf); 8353 if (context) 8354 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD5_CTX_sz); 8355 char *ret = REAL(MD5End)(context, buf); 8356 if (ret) 8357 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length); 8358 return ret; 8359} 8360 8361INTERCEPTOR(char *, MD5File, const char *filename, char *buf) { 8362 void *ctx; 8363 COMMON_INTERCEPTOR_ENTER(ctx, MD5File, filename, buf); 8364 if (filename) 8365 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8366 char *ret = REAL(MD5File)(filename, buf); 8367 if (ret) 8368 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length); 8369 return ret; 8370} 8371 8372INTERCEPTOR(char *, MD5Data, const unsigned char *data, unsigned int len, 8373 char *buf) { 8374 void *ctx; 8375 COMMON_INTERCEPTOR_ENTER(ctx, MD5Data, data, len, buf); 8376 if (data && len > 0) 8377 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8378 char *ret = REAL(MD5Data)(data, len, buf); 8379 if (ret) 8380 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD5_return_length); 8381 return ret; 8382} 8383 8384#define INIT_MD5 \ 8385 COMMON_INTERCEPT_FUNCTION(MD5Init); \ 8386 COMMON_INTERCEPT_FUNCTION(MD5Update); \ 8387 COMMON_INTERCEPT_FUNCTION(MD5Final); \ 8388 COMMON_INTERCEPT_FUNCTION(MD5End); \ 8389 COMMON_INTERCEPT_FUNCTION(MD5File); \ 8390 COMMON_INTERCEPT_FUNCTION(MD5Data) 8391#else 8392#define INIT_MD5 8393#endif 8394 8395#if SANITIZER_INTERCEPT_FSEEK 8396INTERCEPTOR(int, fseek, __sanitizer_FILE *stream, long int offset, int whence) { 8397 void *ctx; 8398 COMMON_INTERCEPTOR_ENTER(ctx, fseek, stream, offset, whence); 8399 return REAL(fseek)(stream, offset, whence); 8400} 8401INTERCEPTOR(int, fseeko, __sanitizer_FILE *stream, OFF_T offset, int whence) { 8402 void *ctx; 8403 COMMON_INTERCEPTOR_ENTER(ctx, fseeko, stream, offset, whence); 8404 return REAL(fseeko)(stream, offset, whence); 8405} 8406INTERCEPTOR(long int, ftell, __sanitizer_FILE *stream) { 8407 void *ctx; 8408 COMMON_INTERCEPTOR_ENTER(ctx, ftell, stream); 8409 return REAL(ftell)(stream); 8410} 8411INTERCEPTOR(OFF_T, ftello, __sanitizer_FILE *stream) { 8412 void *ctx; 8413 COMMON_INTERCEPTOR_ENTER(ctx, ftello, stream); 8414 return REAL(ftello)(stream); 8415} 8416INTERCEPTOR(void, rewind, __sanitizer_FILE *stream) { 8417 void *ctx; 8418 COMMON_INTERCEPTOR_ENTER(ctx, rewind, stream); 8419 return REAL(rewind)(stream); 8420} 8421INTERCEPTOR(int, fgetpos, __sanitizer_FILE *stream, void *pos) { 8422 void *ctx; 8423 COMMON_INTERCEPTOR_ENTER(ctx, fgetpos, stream, pos); 8424 int ret = REAL(fgetpos)(stream, pos); 8425 if (pos && !ret) 8426 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pos, fpos_t_sz); 8427 return ret; 8428} 8429INTERCEPTOR(int, fsetpos, __sanitizer_FILE *stream, const void *pos) { 8430 void *ctx; 8431 COMMON_INTERCEPTOR_ENTER(ctx, fsetpos, stream, pos); 8432 if (pos) 8433 COMMON_INTERCEPTOR_READ_RANGE(ctx, pos, fpos_t_sz); 8434 return REAL(fsetpos)(stream, pos); 8435} 8436#define INIT_FSEEK \ 8437 COMMON_INTERCEPT_FUNCTION(fseek); \ 8438 COMMON_INTERCEPT_FUNCTION(fseeko); \ 8439 COMMON_INTERCEPT_FUNCTION(ftell); \ 8440 COMMON_INTERCEPT_FUNCTION(ftello); \ 8441 COMMON_INTERCEPT_FUNCTION(rewind); \ 8442 COMMON_INTERCEPT_FUNCTION(fgetpos); \ 8443 COMMON_INTERCEPT_FUNCTION(fsetpos) 8444#else 8445#define INIT_FSEEK 8446#endif 8447 8448#if SANITIZER_INTERCEPT_MD2 8449INTERCEPTOR(void, MD2Init, void *context) { 8450 void *ctx; 8451 COMMON_INTERCEPTOR_ENTER(ctx, MD2Init, context); 8452 REAL(MD2Init)(context); 8453 if (context) 8454 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz); 8455} 8456 8457INTERCEPTOR(void, MD2Update, void *context, const unsigned char *data, 8458 unsigned int len) { 8459 void *ctx; 8460 COMMON_INTERCEPTOR_ENTER(ctx, MD2Update, context, data, len); 8461 if (data && len > 0) 8462 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8463 if (context) 8464 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); 8465 REAL(MD2Update)(context, data, len); 8466 if (context) 8467 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz); 8468} 8469 8470INTERCEPTOR(void, MD2Final, unsigned char digest[16], void *context) { 8471 void *ctx; 8472 COMMON_INTERCEPTOR_ENTER(ctx, MD2Final, digest, context); 8473 if (context) 8474 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); 8475 REAL(MD2Final)(digest, context); 8476 if (digest) 8477 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); 8478} 8479 8480INTERCEPTOR(char *, MD2End, void *context, char *buf) { 8481 void *ctx; 8482 COMMON_INTERCEPTOR_ENTER(ctx, MD2End, context, buf); 8483 if (context) 8484 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); 8485 char *ret = REAL(MD2End)(context, buf); 8486 if (ret) 8487 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); 8488 return ret; 8489} 8490 8491INTERCEPTOR(char *, MD2File, const char *filename, char *buf) { 8492 void *ctx; 8493 COMMON_INTERCEPTOR_ENTER(ctx, MD2File, filename, buf); 8494 if (filename) 8495 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1); 8496 char *ret = REAL(MD2File)(filename, buf); 8497 if (ret) 8498 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); 8499 return ret; 8500} 8501 8502INTERCEPTOR(char *, MD2Data, const unsigned char *data, unsigned int len, 8503 char *buf) { 8504 void *ctx; 8505 COMMON_INTERCEPTOR_ENTER(ctx, MD2Data, data, len, buf); 8506 if (data && len > 0) 8507 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); 8508 char *ret = REAL(MD2Data)(data, len, buf); 8509 if (ret) 8510 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); 8511 return ret; 8512} 8513 8514#define INIT_MD2 \ 8515 COMMON_INTERCEPT_FUNCTION(MD2Init); \ 8516 COMMON_INTERCEPT_FUNCTION(MD2Update); \ 8517 COMMON_INTERCEPT_FUNCTION(MD2Final); \ 8518 COMMON_INTERCEPT_FUNCTION(MD2End); \ 8519 COMMON_INTERCEPT_FUNCTION(MD2File); \ 8520 COMMON_INTERCEPT_FUNCTION(MD2Data) 8521#else 8522#define INIT_MD2 8523#endif 8524 8525#if SANITIZER_INTERCEPT_SHA2 8526#define SHA2_INTERCEPTORS(LEN, SHA2_STATE_T) \ 8527 INTERCEPTOR(void, SHA##LEN##_Init, void *context) { \ 8528 void *ctx; \ 8529 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Init, context); \ 8530 REAL(SHA##LEN##_Init)(context); \ 8531 if (context) \ 8532 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 8533 } \ 8534 INTERCEPTOR(void, SHA##LEN##_Update, void *context, \ 8535 const u8 *data, SIZE_T len) { \ 8536 void *ctx; \ 8537 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Update, context, data, len); \ 8538 if (data && len > 0) \ 8539 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); \ 8540 if (context) \ 8541 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 8542 REAL(SHA##LEN##_Update)(context, data, len); \ 8543 if (context) \ 8544 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 8545 } \ 8546 INTERCEPTOR(void, SHA##LEN##_Final, u8 digest[LEN/8], \ 8547 void *context) { \ 8548 void *ctx; \ 8549 CHECK_EQ(SHA##LEN##_digest_length, LEN/8); \ 8550 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Final, digest, context); \ 8551 if (context) \ 8552 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 8553 REAL(SHA##LEN##_Final)(digest, context); \ 8554 if (digest) \ 8555 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, \ 8556 sizeof(digest[0]) * \ 8557 SHA##LEN##_digest_length); \ 8558 } \ 8559 INTERCEPTOR(char *, SHA##LEN##_End, void *context, char *buf) { \ 8560 void *ctx; \ 8561 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_End, context, buf); \ 8562 if (context) \ 8563 COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA##LEN##_CTX_sz); \ 8564 char *ret = REAL(SHA##LEN##_End)(context, buf); \ 8565 if (ret) \ 8566 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 8567 return ret; \ 8568 } \ 8569 INTERCEPTOR(char *, SHA##LEN##_File, const char *filename, char *buf) { \ 8570 void *ctx; \ 8571 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_File, filename, buf); \ 8572 if (filename) \ 8573 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1);\ 8574 char *ret = REAL(SHA##LEN##_File)(filename, buf); \ 8575 if (ret) \ 8576 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 8577 return ret; \ 8578 } \ 8579 INTERCEPTOR(char *, SHA##LEN##_FileChunk, const char *filename, char *buf, \ 8580 OFF_T offset, OFF_T length) { \ 8581 void *ctx; \ 8582 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_FileChunk, filename, buf, offset, \ 8583 length); \ 8584 if (filename) \ 8585 COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, REAL(strlen)(filename) + 1);\ 8586 char *ret = REAL(SHA##LEN##_FileChunk)(filename, buf, offset, length); \ 8587 if (ret) \ 8588 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 8589 return ret; \ 8590 } \ 8591 INTERCEPTOR(char *, SHA##LEN##_Data, u8 *data, SIZE_T len, char *buf) { \ 8592 void *ctx; \ 8593 COMMON_INTERCEPTOR_ENTER(ctx, SHA##LEN##_Data, data, len, buf); \ 8594 if (data && len > 0) \ 8595 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); \ 8596 char *ret = REAL(SHA##LEN##_Data)(data, len, buf); \ 8597 if (ret) \ 8598 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA##LEN##_return_length); \ 8599 return ret; \ 8600 } 8601 8602SHA2_INTERCEPTORS(224, u32); 8603SHA2_INTERCEPTORS(256, u32); 8604SHA2_INTERCEPTORS(384, u64); 8605SHA2_INTERCEPTORS(512, u64); 8606 8607#define INIT_SHA2_INTECEPTORS(LEN) \ 8608 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Init); \ 8609 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Update); \ 8610 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Final); \ 8611 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_End); \ 8612 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_File); \ 8613 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_FileChunk); \ 8614 COMMON_INTERCEPT_FUNCTION(SHA##LEN##_Data) 8615 8616#define INIT_SHA2 \ 8617 INIT_SHA2_INTECEPTORS(224); \ 8618 INIT_SHA2_INTECEPTORS(256); \ 8619 INIT_SHA2_INTECEPTORS(384); \ 8620 INIT_SHA2_INTECEPTORS(512) 8621#undef SHA2_INTERCEPTORS 8622#else 8623#define INIT_SHA2 8624#endif 8625 8626#if SANITIZER_INTERCEPT_VIS 8627INTERCEPTOR(char *, vis, char *dst, int c, int flag, int nextc) { 8628 void *ctx; 8629 COMMON_INTERCEPTOR_ENTER(ctx, vis, dst, c, flag, nextc); 8630 char *end = REAL(vis)(dst, c, flag, nextc); 8631 // dst is NULL terminated and end points to the NULL char 8632 if (dst && end) 8633 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); 8634 return end; 8635} 8636INTERCEPTOR(char *, nvis, char *dst, SIZE_T dlen, int c, int flag, int nextc) { 8637 void *ctx; 8638 COMMON_INTERCEPTOR_ENTER(ctx, nvis, dst, dlen, c, flag, nextc); 8639 char *end = REAL(nvis)(dst, dlen, c, flag, nextc); 8640 // nvis cannot make sure the dst is NULL terminated 8641 if (dst && end) 8642 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); 8643 return end; 8644} 8645INTERCEPTOR(int, strvis, char *dst, const char *src, int flag) { 8646 void *ctx; 8647 COMMON_INTERCEPTOR_ENTER(ctx, strvis, dst, src, flag); 8648 if (src) 8649 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8650 int len = REAL(strvis)(dst, src, flag); 8651 if (dst) 8652 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 8653 return len; 8654} 8655INTERCEPTOR(int, stravis, char **dst, const char *src, int flag) { 8656 void *ctx; 8657 COMMON_INTERCEPTOR_ENTER(ctx, stravis, dst, src, flag); 8658 if (src) 8659 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8660 int len = REAL(stravis)(dst, src, flag); 8661 if (dst) { 8662 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(char *)); 8663 if (*dst) 8664 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *dst, len + 1); 8665 } 8666 return len; 8667} 8668INTERCEPTOR(int, strnvis, char *dst, SIZE_T dlen, const char *src, int flag) { 8669 void *ctx; 8670 COMMON_INTERCEPTOR_ENTER(ctx, strnvis, dst, dlen, src, flag); 8671 if (src) 8672 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8673 int len = REAL(strnvis)(dst, dlen, src, flag); 8674 // The interface will be valid even if there is no space for NULL char 8675 if (dst && len > 0) 8676 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 8677 return len; 8678} 8679INTERCEPTOR(int, strvisx, char *dst, const char *src, SIZE_T len, int flag) { 8680 void *ctx; 8681 COMMON_INTERCEPTOR_ENTER(ctx, strvisx, dst, src, len, flag); 8682 if (src) 8683 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 8684 int ret = REAL(strvisx)(dst, src, len, flag); 8685 if (dst) 8686 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8687 return ret; 8688} 8689INTERCEPTOR(int, strnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, 8690 int flag) { 8691 void *ctx; 8692 COMMON_INTERCEPTOR_ENTER(ctx, strnvisx, dst, dlen, src, len, flag); 8693 if (src) 8694 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 8695 int ret = REAL(strnvisx)(dst, dlen, src, len, flag); 8696 if (dst && ret >= 0) 8697 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8698 return ret; 8699} 8700INTERCEPTOR(int, strenvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, 8701 int flag, int *cerr_ptr) { 8702 void *ctx; 8703 COMMON_INTERCEPTOR_ENTER(ctx, strenvisx, dst, dlen, src, len, flag, cerr_ptr); 8704 if (src) 8705 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 8706 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold 8707 // according to the implementation 8708 if (cerr_ptr) 8709 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int)); 8710 int ret = REAL(strenvisx)(dst, dlen, src, len, flag, cerr_ptr); 8711 if (dst && ret >= 0) 8712 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8713 if (cerr_ptr) 8714 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int)); 8715 return ret; 8716} 8717INTERCEPTOR(char *, svis, char *dst, int c, int flag, int nextc, 8718 const char *extra) { 8719 void *ctx; 8720 COMMON_INTERCEPTOR_ENTER(ctx, svis, dst, c, flag, nextc, extra); 8721 if (extra) 8722 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8723 char *end = REAL(svis)(dst, c, flag, nextc, extra); 8724 if (dst && end) 8725 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); 8726 return end; 8727} 8728INTERCEPTOR(char *, snvis, char *dst, SIZE_T dlen, int c, int flag, int nextc, 8729 const char *extra) { 8730 void *ctx; 8731 COMMON_INTERCEPTOR_ENTER(ctx, snvis, dst, dlen, c, flag, nextc, extra); 8732 if (extra) 8733 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8734 char *end = REAL(snvis)(dst, dlen, c, flag, nextc, extra); 8735 if (dst && end) 8736 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, 8737 Min((SIZE_T)(end - dst + 1), dlen)); 8738 return end; 8739} 8740INTERCEPTOR(int, strsvis, char *dst, const char *src, int flag, 8741 const char *extra) { 8742 void *ctx; 8743 COMMON_INTERCEPTOR_ENTER(ctx, strsvis, dst, src, flag, extra); 8744 if (src) 8745 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8746 if (extra) 8747 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8748 int len = REAL(strsvis)(dst, src, flag, extra); 8749 if (dst) 8750 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 8751 return len; 8752} 8753INTERCEPTOR(int, strsnvis, char *dst, SIZE_T dlen, const char *src, int flag, 8754 const char *extra) { 8755 void *ctx; 8756 COMMON_INTERCEPTOR_ENTER(ctx, strsnvis, dst, dlen, src, flag, extra); 8757 if (src) 8758 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8759 if (extra) 8760 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8761 int len = REAL(strsnvis)(dst, dlen, src, flag, extra); 8762 // The interface will be valid even if there is no space for NULL char 8763 if (dst && len >= 0) 8764 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); 8765 return len; 8766} 8767INTERCEPTOR(int, strsvisx, char *dst, const char *src, SIZE_T len, int flag, 8768 const char *extra) { 8769 void *ctx; 8770 COMMON_INTERCEPTOR_ENTER(ctx, strsvisx, dst, src, len, flag, extra); 8771 if (src) 8772 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 8773 if (extra) 8774 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8775 int ret = REAL(strsvisx)(dst, src, len, flag, extra); 8776 if (dst) 8777 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8778 return ret; 8779} 8780INTERCEPTOR(int, strsnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, 8781 int flag, const char *extra) { 8782 void *ctx; 8783 COMMON_INTERCEPTOR_ENTER(ctx, strsnvisx, dst, dlen, src, len, flag, extra); 8784 if (src) 8785 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 8786 if (extra) 8787 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8788 int ret = REAL(strsnvisx)(dst, dlen, src, len, flag, extra); 8789 if (dst && ret >= 0) 8790 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8791 return ret; 8792} 8793INTERCEPTOR(int, strsenvisx, char *dst, SIZE_T dlen, const char *src, 8794 SIZE_T len, int flag, const char *extra, int *cerr_ptr) { 8795 void *ctx; 8796 COMMON_INTERCEPTOR_ENTER(ctx, strsenvisx, dst, dlen, src, len, flag, extra, 8797 cerr_ptr); 8798 if (src) 8799 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); 8800 if (extra) 8801 COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, REAL(strlen)(extra) + 1); 8802 // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold 8803 // according to the implementation 8804 if (cerr_ptr) 8805 COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int)); 8806 int ret = REAL(strsenvisx)(dst, dlen, src, len, flag, extra, cerr_ptr); 8807 if (dst && ret >= 0) 8808 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8809 if (cerr_ptr) 8810 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int)); 8811 return ret; 8812} 8813INTERCEPTOR(int, unvis, char *cp, int c, int *astate, int flag) { 8814 void *ctx; 8815 COMMON_INTERCEPTOR_ENTER(ctx, unvis, cp, c, astate, flag); 8816 if (astate) 8817 COMMON_INTERCEPTOR_READ_RANGE(ctx, astate, sizeof(*astate)); 8818 int ret = REAL(unvis)(cp, c, astate, flag); 8819 if (ret == unvis_valid || ret == unvis_validpush) { 8820 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cp, sizeof(*cp)); 8821 } 8822 return ret; 8823} 8824INTERCEPTOR(int, strunvis, char *dst, const char *src) { 8825 void *ctx; 8826 COMMON_INTERCEPTOR_ENTER(ctx, strunvis, dst, src); 8827 if (src) 8828 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8829 int ret = REAL(strunvis)(dst, src); 8830 if (ret != -1) 8831 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8832 return ret; 8833} 8834INTERCEPTOR(int, strnunvis, char *dst, SIZE_T dlen, const char *src) { 8835 void *ctx; 8836 COMMON_INTERCEPTOR_ENTER(ctx, strnunvis, dst, dlen, src); 8837 if (src) 8838 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8839 int ret = REAL(strnunvis)(dst, dlen, src); 8840 if (ret != -1) 8841 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8842 return ret; 8843} 8844INTERCEPTOR(int, strunvisx, char *dst, const char *src, int flag) { 8845 void *ctx; 8846 COMMON_INTERCEPTOR_ENTER(ctx, strunvisx, dst, src, flag); 8847 if (src) 8848 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8849 int ret = REAL(strunvisx)(dst, src, flag); 8850 if (ret != -1) 8851 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8852 return ret; 8853} 8854INTERCEPTOR(int, strnunvisx, char *dst, SIZE_T dlen, const char *src, 8855 int flag) { 8856 void *ctx; 8857 COMMON_INTERCEPTOR_ENTER(ctx, strnunvisx, dst, dlen, src, flag); 8858 if (src) 8859 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, REAL(strlen)(src) + 1); 8860 int ret = REAL(strnunvisx)(dst, dlen, src, flag); 8861 if (ret != -1) 8862 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); 8863 return ret; 8864} 8865#define INIT_VIS \ 8866 COMMON_INTERCEPT_FUNCTION(vis); \ 8867 COMMON_INTERCEPT_FUNCTION(nvis); \ 8868 COMMON_INTERCEPT_FUNCTION(strvis); \ 8869 COMMON_INTERCEPT_FUNCTION(stravis); \ 8870 COMMON_INTERCEPT_FUNCTION(strnvis); \ 8871 COMMON_INTERCEPT_FUNCTION(strvisx); \ 8872 COMMON_INTERCEPT_FUNCTION(strnvisx); \ 8873 COMMON_INTERCEPT_FUNCTION(strenvisx); \ 8874 COMMON_INTERCEPT_FUNCTION(svis); \ 8875 COMMON_INTERCEPT_FUNCTION(snvis); \ 8876 COMMON_INTERCEPT_FUNCTION(strsvis); \ 8877 COMMON_INTERCEPT_FUNCTION(strsnvis); \ 8878 COMMON_INTERCEPT_FUNCTION(strsvisx); \ 8879 COMMON_INTERCEPT_FUNCTION(strsnvisx); \ 8880 COMMON_INTERCEPT_FUNCTION(strsenvisx); \ 8881 COMMON_INTERCEPT_FUNCTION(unvis); \ 8882 COMMON_INTERCEPT_FUNCTION(strunvis); \ 8883 COMMON_INTERCEPT_FUNCTION(strnunvis); \ 8884 COMMON_INTERCEPT_FUNCTION(strunvisx); \ 8885 COMMON_INTERCEPT_FUNCTION(strnunvisx) 8886#else 8887#define INIT_VIS 8888#endif 8889 8890#if SANITIZER_INTERCEPT_CDB 8891INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open, const char *path, int flags) { 8892 void *ctx; 8893 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open, path, flags); 8894 if (path) 8895 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 8896 struct __sanitizer_cdbr *cdbr = REAL(cdbr_open)(path, flags); 8897 if (cdbr) 8898 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr)); 8899 return cdbr; 8900} 8901 8902INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open_mem, void *base, SIZE_T size, 8903 int flags, void (*unmap)(void *, void *, SIZE_T), void *cookie) { 8904 void *ctx; 8905 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open_mem, base, size, flags, unmap, 8906 cookie); 8907 if (base && size) 8908 COMMON_INTERCEPTOR_READ_RANGE(ctx, base, size); 8909 struct __sanitizer_cdbr *cdbr = 8910 REAL(cdbr_open_mem)(base, size, flags, unmap, cookie); 8911 if (cdbr) 8912 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr)); 8913 return cdbr; 8914} 8915 8916INTERCEPTOR(u32, cdbr_entries, struct __sanitizer_cdbr *cdbr) { 8917 void *ctx; 8918 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_entries, cdbr); 8919 if (cdbr) 8920 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 8921 return REAL(cdbr_entries)(cdbr); 8922} 8923 8924INTERCEPTOR(int, cdbr_get, struct __sanitizer_cdbr *cdbr, u32 index, 8925 const void **data, SIZE_T *datalen) { 8926 void *ctx; 8927 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_get, cdbr, index, data, datalen); 8928 if (cdbr) 8929 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 8930 int ret = REAL(cdbr_get)(cdbr, index, data, datalen); 8931 if (!ret) { 8932 if (data) 8933 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data)); 8934 if (datalen) 8935 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen)); 8936 if (data && datalen) 8937 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen); 8938 } 8939 return ret; 8940} 8941 8942INTERCEPTOR(int, cdbr_find, struct __sanitizer_cdbr *cdbr, const void *key, 8943 SIZE_T keylen, const void **data, SIZE_T *datalen) { 8944 void *ctx; 8945 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_find, cdbr, key, keylen, data, datalen); 8946 if (cdbr) 8947 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 8948 if (key) 8949 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); 8950 int ret = REAL(cdbr_find)(cdbr, key, keylen, data, datalen); 8951 if (!ret) { 8952 if (data) 8953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data)); 8954 if (datalen) 8955 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen)); 8956 if (data && datalen) 8957 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen); 8958 } 8959 return ret; 8960} 8961 8962INTERCEPTOR(void, cdbr_close, struct __sanitizer_cdbr *cdbr) { 8963 void *ctx; 8964 COMMON_INTERCEPTOR_ENTER(ctx, cdbr_close, cdbr); 8965 if (cdbr) 8966 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); 8967 REAL(cdbr_close)(cdbr); 8968} 8969 8970INTERCEPTOR(struct __sanitizer_cdbw *, cdbw_open) { 8971 void *ctx; 8972 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_open); 8973 struct __sanitizer_cdbw *ret = REAL(cdbw_open)(); 8974 if (ret) 8975 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); 8976 return ret; 8977} 8978 8979INTERCEPTOR(int, cdbw_put, struct __sanitizer_cdbw *cdbw, const void *key, 8980 SIZE_T keylen, const void *data, SIZE_T datalen) { 8981 void *ctx; 8982 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put, cdbw, key, keylen, data, datalen); 8983 if (cdbw) 8984 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 8985 if (data && datalen) 8986 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen); 8987 if (key && keylen) 8988 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); 8989 int ret = REAL(cdbw_put)(cdbw, key, keylen, data, datalen); 8990 if (!ret && cdbw) 8991 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 8992 return ret; 8993} 8994 8995INTERCEPTOR(int, cdbw_put_data, struct __sanitizer_cdbw *cdbw, const void *data, 8996 SIZE_T datalen, u32 *index) { 8997 void *ctx; 8998 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_data, cdbw, data, datalen, index); 8999 if (cdbw) 9000 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9001 if (data && datalen) 9002 COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen); 9003 int ret = REAL(cdbw_put_data)(cdbw, data, datalen, index); 9004 if (!ret) { 9005 if (index) 9006 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, index, sizeof(*index)); 9007 if (cdbw) 9008 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9009 } 9010 return ret; 9011} 9012 9013INTERCEPTOR(int, cdbw_put_key, struct __sanitizer_cdbw *cdbw, const void *key, 9014 SIZE_T keylen, u32 index) { 9015 void *ctx; 9016 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_key, cdbw, key, keylen, index); 9017 if (cdbw) 9018 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9019 if (key && keylen) 9020 COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); 9021 int ret = REAL(cdbw_put_key)(cdbw, key, keylen, index); 9022 if (!ret && cdbw) 9023 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9024 return ret; 9025} 9026 9027INTERCEPTOR(int, cdbw_output, struct __sanitizer_cdbw *cdbw, int output, 9028 const char descr[16], u32 (*seedgen)(void)) { 9029 void *ctx; 9030 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_output, cdbw, output, descr, seedgen); 9031 COMMON_INTERCEPTOR_FD_ACCESS(ctx, output); 9032 if (cdbw) 9033 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9034 if (descr) 9035 COMMON_INTERCEPTOR_READ_RANGE(ctx, descr, internal_strnlen(descr, 16)); 9036 if (seedgen) 9037 COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)seedgen, sizeof(seedgen)); 9038 int ret = REAL(cdbw_output)(cdbw, output, descr, seedgen); 9039 if (!ret) { 9040 if (cdbw) 9041 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); 9042 if (output >= 0) 9043 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, output); 9044 } 9045 return ret; 9046} 9047 9048INTERCEPTOR(void, cdbw_close, struct __sanitizer_cdbw *cdbw) { 9049 void *ctx; 9050 COMMON_INTERCEPTOR_ENTER(ctx, cdbw_close, cdbw); 9051 if (cdbw) 9052 COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); 9053 REAL(cdbw_close)(cdbw); 9054} 9055 9056#define INIT_CDB \ 9057 COMMON_INTERCEPT_FUNCTION(cdbr_open); \ 9058 COMMON_INTERCEPT_FUNCTION(cdbr_open_mem); \ 9059 COMMON_INTERCEPT_FUNCTION(cdbr_entries); \ 9060 COMMON_INTERCEPT_FUNCTION(cdbr_get); \ 9061 COMMON_INTERCEPT_FUNCTION(cdbr_find); \ 9062 COMMON_INTERCEPT_FUNCTION(cdbr_close); \ 9063 COMMON_INTERCEPT_FUNCTION(cdbw_open); \ 9064 COMMON_INTERCEPT_FUNCTION(cdbw_put); \ 9065 COMMON_INTERCEPT_FUNCTION(cdbw_put_data); \ 9066 COMMON_INTERCEPT_FUNCTION(cdbw_put_key); \ 9067 COMMON_INTERCEPT_FUNCTION(cdbw_output); \ 9068 COMMON_INTERCEPT_FUNCTION(cdbw_close) 9069#else 9070#define INIT_CDB 9071#endif 9072 9073#if SANITIZER_INTERCEPT_GETFSENT 9074INTERCEPTOR(void *, getfsent) { 9075 void *ctx; 9076 COMMON_INTERCEPTOR_ENTER(ctx, getfsent); 9077 void *ret = REAL(getfsent)(); 9078 if (ret) 9079 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); 9080 return ret; 9081} 9082 9083INTERCEPTOR(void *, getfsspec, const char *spec) { 9084 void *ctx; 9085 COMMON_INTERCEPTOR_ENTER(ctx, getfsspec, spec); 9086 if (spec) 9087 COMMON_INTERCEPTOR_READ_RANGE(ctx, spec, REAL(strlen)(spec) + 1); 9088 void *ret = REAL(getfsspec)(spec); 9089 if (ret) 9090 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); 9091 return ret; 9092} 9093 9094INTERCEPTOR(void *, getfsfile, const char *file) { 9095 void *ctx; 9096 COMMON_INTERCEPTOR_ENTER(ctx, getfsfile, file); 9097 if (file) 9098 COMMON_INTERCEPTOR_READ_RANGE(ctx, file, REAL(strlen)(file) + 1); 9099 void *ret = REAL(getfsfile)(file); 9100 if (ret) 9101 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); 9102 return ret; 9103} 9104 9105#define INIT_GETFSENT \ 9106 COMMON_INTERCEPT_FUNCTION(getfsent); \ 9107 COMMON_INTERCEPT_FUNCTION(getfsspec); \ 9108 COMMON_INTERCEPT_FUNCTION(getfsfile); 9109#else 9110#define INIT_GETFSENT 9111#endif 9112 9113#if SANITIZER_INTERCEPT_ARC4RANDOM 9114INTERCEPTOR(void, arc4random_buf, void *buf, SIZE_T len) { 9115 void *ctx; 9116 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_buf, buf, len); 9117 REAL(arc4random_buf)(buf, len); 9118 if (buf && len) 9119 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, len); 9120} 9121 9122INTERCEPTOR(void, arc4random_addrandom, u8 *dat, int datlen) { 9123 void *ctx; 9124 COMMON_INTERCEPTOR_ENTER(ctx, arc4random_addrandom, dat, datlen); 9125 if (dat && datlen) 9126 COMMON_INTERCEPTOR_READ_RANGE(ctx, dat, datlen); 9127 REAL(arc4random_addrandom)(dat, datlen); 9128} 9129 9130#define INIT_ARC4RANDOM \ 9131 COMMON_INTERCEPT_FUNCTION(arc4random_buf); \ 9132 COMMON_INTERCEPT_FUNCTION(arc4random_addrandom); 9133#else 9134#define INIT_ARC4RANDOM 9135#endif 9136 9137#if SANITIZER_INTERCEPT_POPEN 9138INTERCEPTOR(__sanitizer_FILE *, popen, const char *command, const char *type) { 9139 void *ctx; 9140 COMMON_INTERCEPTOR_ENTER(ctx, popen, command, type); 9141 if (command) 9142 COMMON_INTERCEPTOR_READ_RANGE(ctx, command, REAL(strlen)(command) + 1); 9143 if (type) 9144 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, REAL(strlen)(type) + 1); 9145 __sanitizer_FILE *res = REAL(popen)(command, type); 9146 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr); 9147 if (res) unpoison_file(res); 9148 return res; 9149} 9150#define INIT_POPEN COMMON_INTERCEPT_FUNCTION(popen) 9151#else 9152#define INIT_POPEN 9153#endif 9154 9155#if SANITIZER_INTERCEPT_POPENVE 9156INTERCEPTOR(__sanitizer_FILE *, popenve, const char *path, 9157 char *const *argv, char *const *envp, const char *type) { 9158 void *ctx; 9159 COMMON_INTERCEPTOR_ENTER(ctx, popenve, path, argv, envp, type); 9160 if (path) 9161 COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); 9162 if (argv) { 9163 for (char *const *pa = argv; ; ++pa) { 9164 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); 9165 if (!*pa) 9166 break; 9167 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, REAL(strlen)(*pa) + 1); 9168 } 9169 } 9170 if (envp) { 9171 for (char *const *pa = envp; ; ++pa) { 9172 COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); 9173 if (!*pa) 9174 break; 9175 COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, REAL(strlen)(*pa) + 1); 9176 } 9177 } 9178 if (type) 9179 COMMON_INTERCEPTOR_READ_RANGE(ctx, type, REAL(strlen)(type) + 1); 9180 __sanitizer_FILE *res = REAL(popenve)(path, argv, envp, type); 9181 COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr); 9182 if (res) unpoison_file(res); 9183 return res; 9184} 9185#define INIT_POPENVE COMMON_INTERCEPT_FUNCTION(popenve) 9186#else 9187#define INIT_POPENVE 9188#endif 9189 9190#if SANITIZER_INTERCEPT_PCLOSE 9191INTERCEPTOR(int, pclose, __sanitizer_FILE *fp) { 9192 void *ctx; 9193 COMMON_INTERCEPTOR_ENTER(ctx, pclose, fp); 9194 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); 9195 const FileMetadata *m = GetInterceptorMetadata(fp); 9196 int res = REAL(pclose)(fp); 9197 if (m) { 9198 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); 9199 DeleteInterceptorMetadata(fp); 9200 } 9201 return res; 9202} 9203#define INIT_PCLOSE COMMON_INTERCEPT_FUNCTION(pclose); 9204#else 9205#define INIT_PCLOSE 9206#endif 9207 9208#if SANITIZER_INTERCEPT_FUNOPEN 9209typedef int (*funopen_readfn)(void *cookie, char *buf, int len); 9210typedef int (*funopen_writefn)(void *cookie, const char *buf, int len); 9211typedef OFF_T (*funopen_seekfn)(void *cookie, OFF_T offset, int whence); 9212typedef int (*funopen_closefn)(void *cookie); 9213 9214struct WrappedFunopenCookie { 9215 void *real_cookie; 9216 funopen_readfn real_read; 9217 funopen_writefn real_write; 9218 funopen_seekfn real_seek; 9219 funopen_closefn real_close; 9220}; 9221 9222static int wrapped_funopen_read(void *cookie, char *buf, int len) { 9223 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9224 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9225 funopen_readfn real_read = wrapped_cookie->real_read; 9226 return real_read(wrapped_cookie->real_cookie, buf, len); 9227} 9228 9229static int wrapped_funopen_write(void *cookie, const char *buf, int len) { 9230 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9231 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9232 funopen_writefn real_write = wrapped_cookie->real_write; 9233 return real_write(wrapped_cookie->real_cookie, buf, len); 9234} 9235 9236static OFF_T wrapped_funopen_seek(void *cookie, OFF_T offset, int whence) { 9237 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9238 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9239 funopen_seekfn real_seek = wrapped_cookie->real_seek; 9240 return real_seek(wrapped_cookie->real_cookie, offset, whence); 9241} 9242 9243static int wrapped_funopen_close(void *cookie) { 9244 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 9245 WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; 9246 funopen_closefn real_close = wrapped_cookie->real_close; 9247 int res = real_close(wrapped_cookie->real_cookie); 9248 InternalFree(wrapped_cookie); 9249 return res; 9250} 9251 9252INTERCEPTOR(__sanitizer_FILE *, funopen, void *cookie, funopen_readfn readfn, 9253 funopen_writefn writefn, funopen_seekfn seekfn, 9254 funopen_closefn closefn) { 9255 void *ctx; 9256 COMMON_INTERCEPTOR_ENTER(ctx, funopen, cookie, readfn, writefn, seekfn, 9257 closefn); 9258 9259 WrappedFunopenCookie *wrapped_cookie = 9260 (WrappedFunopenCookie *)InternalAlloc(sizeof(WrappedFunopenCookie)); 9261 wrapped_cookie->real_cookie = cookie; 9262 wrapped_cookie->real_read = readfn; 9263 wrapped_cookie->real_write = writefn; 9264 wrapped_cookie->real_seek = seekfn; 9265 wrapped_cookie->real_close = closefn; 9266 9267 __sanitizer_FILE *res = 9268 REAL(funopen)(wrapped_cookie, 9269 readfn ? wrapped_funopen_read : nullptr, 9270 writefn ? wrapped_funopen_write : nullptr, 9271 seekfn ? wrapped_funopen_seek : nullptr, 9272 closefn ? wrapped_funopen_close : nullptr); 9273 if (res) 9274 unpoison_file(res); 9275 return res; 9276} 9277#define INIT_FUNOPEN COMMON_INTERCEPT_FUNCTION(funopen) 9278#else 9279#define INIT_FUNOPEN 9280#endif 9281 9282#if SANITIZER_INTERCEPT_FUNOPEN2 9283typedef SSIZE_T (*funopen2_readfn)(void *cookie, void *buf, SIZE_T len); 9284typedef SSIZE_T (*funopen2_writefn)(void *cookie, const void *buf, SIZE_T len); 9285typedef OFF_T (*funopen2_seekfn)(void *cookie, OFF_T offset, int whence); 9286typedef int (*funopen2_flushfn)(void *cookie); 9287typedef int (*funopen2_closefn)(void *cookie); 9288 9289struct WrappedFunopen2Cookie { 9290 void *real_cookie; 9291 funopen2_readfn real_read; 9292 funopen2_writefn real_write; 9293 funopen2_seekfn real_seek; 9294 funopen2_flushfn real_flush; 9295 funopen2_closefn real_close; 9296}; 9297 9298static SSIZE_T wrapped_funopen2_read(void *cookie, void *buf, SIZE_T len) { 9299 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9300 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9301 funopen2_readfn real_read = wrapped_cookie->real_read; 9302 return real_read(wrapped_cookie->real_cookie, buf, len); 9303} 9304 9305static SSIZE_T wrapped_funopen2_write(void *cookie, const void *buf, 9306 SIZE_T len) { 9307 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9308 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9309 funopen2_writefn real_write = wrapped_cookie->real_write; 9310 return real_write(wrapped_cookie->real_cookie, buf, len); 9311} 9312 9313static OFF_T wrapped_funopen2_seek(void *cookie, OFF_T offset, int whence) { 9314 COMMON_INTERCEPTOR_UNPOISON_PARAM(3); 9315 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9316 funopen2_seekfn real_seek = wrapped_cookie->real_seek; 9317 return real_seek(wrapped_cookie->real_cookie, offset, whence); 9318} 9319 9320static int wrapped_funopen2_flush(void *cookie) { 9321 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 9322 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9323 funopen2_flushfn real_flush = wrapped_cookie->real_flush; 9324 return real_flush(wrapped_cookie->real_cookie); 9325} 9326 9327static int wrapped_funopen2_close(void *cookie) { 9328 COMMON_INTERCEPTOR_UNPOISON_PARAM(1); 9329 WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; 9330 funopen2_closefn real_close = wrapped_cookie->real_close; 9331 int res = real_close(wrapped_cookie->real_cookie); 9332 InternalFree(wrapped_cookie); 9333 return res; 9334} 9335 9336INTERCEPTOR(__sanitizer_FILE *, funopen2, void *cookie, funopen2_readfn readfn, 9337 funopen2_writefn writefn, funopen2_seekfn seekfn, 9338 funopen2_flushfn flushfn, funopen2_closefn closefn) { 9339 void *ctx; 9340 COMMON_INTERCEPTOR_ENTER(ctx, funopen2, cookie, readfn, writefn, seekfn, 9341 flushfn, closefn); 9342 9343 WrappedFunopen2Cookie *wrapped_cookie = 9344 (WrappedFunopen2Cookie *)InternalAlloc(sizeof(WrappedFunopen2Cookie)); 9345 wrapped_cookie->real_cookie = cookie; 9346 wrapped_cookie->real_read = readfn; 9347 wrapped_cookie->real_write = writefn; 9348 wrapped_cookie->real_seek = seekfn; 9349 wrapped_cookie->real_flush = flushfn; 9350 wrapped_cookie->real_close = closefn; 9351 9352 __sanitizer_FILE *res = 9353 REAL(funopen2)(wrapped_cookie, 9354 readfn ? wrapped_funopen2_read : nullptr, 9355 writefn ? wrapped_funopen2_write : nullptr, 9356 seekfn ? wrapped_funopen2_seek : nullptr, 9357 flushfn ? wrapped_funopen2_flush : nullptr, 9358 closefn ? wrapped_funopen2_close : nullptr); 9359 if (res) 9360 unpoison_file(res); 9361 return res; 9362} 9363#define INIT_FUNOPEN2 COMMON_INTERCEPT_FUNCTION(funopen2) 9364#else 9365#define INIT_FUNOPEN2 9366#endif 9367 9368#if SANITIZER_INTERCEPT_FDEVNAME 9369INTERCEPTOR(char *, fdevname, int fd) { 9370 void *ctx; 9371 COMMON_INTERCEPTOR_ENTER(ctx, fdevname, fd); 9372 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 9373 char *name = REAL(fdevname)(fd); 9374 if (name) { 9375 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1); 9376 if (fd > 0) 9377 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 9378 } 9379 return name; 9380} 9381 9382INTERCEPTOR(char *, fdevname_r, int fd, char *buf, SIZE_T len) { 9383 void *ctx; 9384 COMMON_INTERCEPTOR_ENTER(ctx, fdevname_r, fd, buf, len); 9385 COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); 9386 char *name = REAL(fdevname_r)(fd, buf, len); 9387 if (name && buf && len > 0) { 9388 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, REAL(strlen)(buf) + 1); 9389 if (fd > 0) 9390 COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); 9391 } 9392 return name; 9393} 9394 9395#define INIT_FDEVNAME \ 9396 COMMON_INTERCEPT_FUNCTION(fdevname); \ 9397 COMMON_INTERCEPT_FUNCTION(fdevname_r); 9398#else 9399#define INIT_FDEVNAME 9400#endif 9401 9402#if SANITIZER_INTERCEPT_GETUSERSHELL 9403INTERCEPTOR(char *, getusershell) { 9404 void *ctx; 9405 COMMON_INTERCEPTOR_ENTER(ctx, getusershell); 9406 char *res = REAL(getusershell)(); 9407 if (res) 9408 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 9409 return res; 9410} 9411 9412#define INIT_GETUSERSHELL COMMON_INTERCEPT_FUNCTION(getusershell); 9413#else 9414#define INIT_GETUSERSHELL 9415#endif 9416 9417#if SANITIZER_INTERCEPT_SL_INIT 9418INTERCEPTOR(void *, sl_init) { 9419 void *ctx; 9420 COMMON_INTERCEPTOR_ENTER(ctx, sl_init); 9421 void *res = REAL(sl_init)(); 9422 if (res) 9423 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_StringList_sz); 9424 return res; 9425} 9426 9427INTERCEPTOR(int, sl_add, void *sl, char *item) { 9428 void *ctx; 9429 COMMON_INTERCEPTOR_ENTER(ctx, sl_add, sl, item); 9430 if (sl) 9431 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 9432 if (item) 9433 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, REAL(strlen)(item) + 1); 9434 int res = REAL(sl_add)(sl, item); 9435 if (!res) 9436 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 9437 return res; 9438} 9439 9440INTERCEPTOR(char *, sl_find, void *sl, const char *item) { 9441 void *ctx; 9442 COMMON_INTERCEPTOR_ENTER(ctx, sl_find, sl, item); 9443 if (sl) 9444 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 9445 if (item) 9446 COMMON_INTERCEPTOR_READ_RANGE(ctx, item, REAL(strlen)(item) + 1); 9447 char *res = REAL(sl_find)(sl, item); 9448 if (res) 9449 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1); 9450 return res; 9451} 9452 9453INTERCEPTOR(void, sl_free, void *sl, int freeall) { 9454 void *ctx; 9455 COMMON_INTERCEPTOR_ENTER(ctx, sl_free, sl, freeall); 9456 if (sl) 9457 COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); 9458 REAL(sl_free)(sl, freeall); 9459} 9460 9461#define INIT_SL_INIT \ 9462 COMMON_INTERCEPT_FUNCTION(sl_init); \ 9463 COMMON_INTERCEPT_FUNCTION(sl_add); \ 9464 COMMON_INTERCEPT_FUNCTION(sl_find); \ 9465 COMMON_INTERCEPT_FUNCTION(sl_free); 9466#else 9467#define INIT_SL_INIT 9468#endif 9469 9470static void InitializeCommonInterceptors() { 9471 static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1]; 9472 interceptor_metadata_map = 9473 new ((void *)&metadata_mem) MetadataHashMap(); // NOLINT 9474 9475 INIT_MMAP; 9476 INIT_MMAP64; 9477 INIT_TEXTDOMAIN; 9478 INIT_STRLEN; 9479 INIT_STRNLEN; 9480 INIT_STRNDUP; 9481 INIT___STRNDUP; 9482 INIT_STRCMP; 9483 INIT_STRNCMP; 9484 INIT_STRCASECMP; 9485 INIT_STRNCASECMP; 9486 INIT_STRSTR; 9487 INIT_STRCASESTR; 9488 INIT_STRCHR; 9489 INIT_STRCHRNUL; 9490 INIT_STRRCHR; 9491 INIT_STRSPN; 9492 INIT_STRTOK; 9493 INIT_STRPBRK; 9494 INIT_STRXFRM; 9495 INIT___STRXFRM_L; 9496 INIT_MEMSET; 9497 INIT_MEMMOVE; 9498 INIT_MEMCPY; 9499 INIT_MEMCHR; 9500 INIT_MEMCMP; 9501 INIT_MEMRCHR; 9502 INIT_MEMMEM; 9503 INIT_READ; 9504 INIT_FREAD; 9505 INIT_PREAD; 9506 INIT_PREAD64; 9507 INIT_READV; 9508 INIT_PREADV; 9509 INIT_PREADV64; 9510 INIT_WRITE; 9511 INIT_FWRITE; 9512 INIT_PWRITE; 9513 INIT_PWRITE64; 9514 INIT_WRITEV; 9515 INIT_PWRITEV; 9516 INIT_PWRITEV64; 9517 INIT_FGETS; 9518 INIT_FPUTS; 9519 INIT_PUTS; 9520 INIT_PRCTL; 9521 INIT_LOCALTIME_AND_FRIENDS; 9522 INIT_STRPTIME; 9523 INIT_SCANF; 9524 INIT_ISOC99_SCANF; 9525 INIT_PRINTF; 9526 INIT_PRINTF_L; 9527 INIT_ISOC99_PRINTF; 9528 INIT_FREXP; 9529 INIT_FREXPF_FREXPL; 9530 INIT_GETPWNAM_AND_FRIENDS; 9531 INIT_GETPWNAM_R_AND_FRIENDS; 9532 INIT_GETPWENT; 9533 INIT_FGETPWENT; 9534 INIT_GETPWENT_R; 9535 INIT_FGETPWENT_R; 9536 INIT_FGETGRENT_R; 9537 INIT_SETPWENT; 9538 INIT_CLOCK_GETTIME; 9539 INIT_GETITIMER; 9540 INIT_TIME; 9541 INIT_GLOB; 9542 INIT_GLOB64; 9543 INIT_WAIT; 9544 INIT_WAIT4; 9545 INIT_INET; 9546 INIT_PTHREAD_GETSCHEDPARAM; 9547 INIT_GETADDRINFO; 9548 INIT_GETNAMEINFO; 9549 INIT_GETSOCKNAME; 9550 INIT_GETHOSTBYNAME; 9551 INIT_GETHOSTBYNAME2; 9552 INIT_GETHOSTBYNAME_R; 9553 INIT_GETHOSTBYNAME2_R; 9554 INIT_GETHOSTBYADDR_R; 9555 INIT_GETHOSTENT_R; 9556 INIT_GETSOCKOPT; 9557 INIT_ACCEPT; 9558 INIT_ACCEPT4; 9559 INIT_PACCEPT; 9560 INIT_MODF; 9561 INIT_RECVMSG; 9562 INIT_SENDMSG; 9563 INIT_RECVMMSG; 9564 INIT_SENDMMSG; 9565 INIT_GETPEERNAME; 9566 INIT_IOCTL; 9567 INIT_INET_ATON; 9568 INIT_SYSINFO; 9569 INIT_READDIR; 9570 INIT_READDIR64; 9571 INIT_PTRACE; 9572 INIT_SETLOCALE; 9573 INIT_GETCWD; 9574 INIT_GET_CURRENT_DIR_NAME; 9575 INIT_STRTOIMAX; 9576 INIT_MBSTOWCS; 9577 INIT_MBSNRTOWCS; 9578 INIT_WCSTOMBS; 9579 INIT_WCSNRTOMBS; 9580 INIT_WCRTOMB; 9581 INIT_TCGETATTR; 9582 INIT_REALPATH; 9583 INIT_CANONICALIZE_FILE_NAME; 9584 INIT_CONFSTR; 9585 INIT_SCHED_GETAFFINITY; 9586 INIT_SCHED_GETPARAM; 9587 INIT_STRERROR; 9588 INIT_STRERROR_R; 9589 INIT_XPG_STRERROR_R; 9590 INIT_SCANDIR; 9591 INIT_SCANDIR64; 9592 INIT_GETGROUPS; 9593 INIT_POLL; 9594 INIT_PPOLL; 9595 INIT_WORDEXP; 9596 INIT_SIGWAIT; 9597 INIT_SIGWAITINFO; 9598 INIT_SIGTIMEDWAIT; 9599 INIT_SIGSETOPS; 9600 INIT_SIGPENDING; 9601 INIT_SIGPROCMASK; 9602 INIT_BACKTRACE; 9603 INIT__EXIT; 9604 INIT_PTHREAD_MUTEX_LOCK; 9605 INIT_PTHREAD_MUTEX_UNLOCK; 9606 INIT___PTHREAD_MUTEX_LOCK; 9607 INIT___PTHREAD_MUTEX_UNLOCK; 9608 INIT___LIBC_MUTEX_LOCK; 9609 INIT___LIBC_MUTEX_UNLOCK; 9610 INIT___LIBC_THR_SETCANCELSTATE; 9611 INIT_GETMNTENT; 9612 INIT_GETMNTENT_R; 9613 INIT_STATFS; 9614 INIT_STATFS64; 9615 INIT_STATVFS; 9616 INIT_STATVFS64; 9617 INIT_INITGROUPS; 9618 INIT_ETHER_NTOA_ATON; 9619 INIT_ETHER_HOST; 9620 INIT_ETHER_R; 9621 INIT_SHMCTL; 9622 INIT_RANDOM_R; 9623 INIT_PTHREAD_ATTR_GET; 9624 INIT_PTHREAD_ATTR_GET_SCHED; 9625 INIT_PTHREAD_ATTR_GETINHERITSCHED; 9626 INIT_PTHREAD_ATTR_GETAFFINITY_NP; 9627 INIT_PTHREAD_MUTEXATTR_GETPSHARED; 9628 INIT_PTHREAD_MUTEXATTR_GETTYPE; 9629 INIT_PTHREAD_MUTEXATTR_GETPROTOCOL; 9630 INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING; 9631 INIT_PTHREAD_MUTEXATTR_GETROBUST; 9632 INIT_PTHREAD_MUTEXATTR_GETROBUST_NP; 9633 INIT_PTHREAD_RWLOCKATTR_GETPSHARED; 9634 INIT_PTHREAD_RWLOCKATTR_GETKIND_NP; 9635 INIT_PTHREAD_CONDATTR_GETPSHARED; 9636 INIT_PTHREAD_CONDATTR_GETCLOCK; 9637 INIT_PTHREAD_BARRIERATTR_GETPSHARED; 9638 INIT_TMPNAM; 9639 INIT_TMPNAM_R; 9640 INIT_TTYNAME_R; 9641 INIT_TEMPNAM; 9642 INIT_PTHREAD_SETNAME_NP; 9643 INIT_PTHREAD_GETNAME_NP; 9644 INIT_SINCOS; 9645 INIT_REMQUO; 9646 INIT_REMQUOL; 9647 INIT_LGAMMA; 9648 INIT_LGAMMAL; 9649 INIT_LGAMMA_R; 9650 INIT_LGAMMAL_R; 9651 INIT_DRAND48_R; 9652 INIT_RAND_R; 9653 INIT_GETLINE; 9654 INIT_ICONV; 9655 INIT_TIMES; 9656 INIT_TLS_GET_ADDR; 9657 INIT_LISTXATTR; 9658 INIT_GETXATTR; 9659 INIT_GETRESID; 9660 INIT_GETIFADDRS; 9661 INIT_IF_INDEXTONAME; 9662 INIT_CAPGET; 9663 INIT_AEABI_MEM; 9664 INIT___BZERO; 9665 INIT_FTIME; 9666 INIT_XDR; 9667 INIT_TSEARCH; 9668 INIT_LIBIO_INTERNALS; 9669 INIT_FOPEN; 9670 INIT_FOPEN64; 9671 INIT_OPEN_MEMSTREAM; 9672 INIT_OBSTACK; 9673 INIT_FFLUSH; 9674 INIT_FCLOSE; 9675 INIT_DLOPEN_DLCLOSE; 9676 INIT_GETPASS; 9677 INIT_TIMERFD; 9678 INIT_MLOCKX; 9679 INIT_FOPENCOOKIE; 9680 INIT_SEM; 9681 INIT_PTHREAD_SETCANCEL; 9682 INIT_MINCORE; 9683 INIT_PROCESS_VM_READV; 9684 INIT_CTERMID; 9685 INIT_CTERMID_R; 9686 INIT_RECV_RECVFROM; 9687 INIT_SEND_SENDTO; 9688 INIT_STAT; 9689 INIT_EVENTFD_READ_WRITE; 9690 INIT_LSTAT; 9691 INIT___XSTAT; 9692 INIT___XSTAT64; 9693 INIT___LXSTAT; 9694 INIT___LXSTAT64; 9695 // FIXME: add other *stat interceptors. 9696 INIT_UTMP; 9697 INIT_UTMPX; 9698 INIT_GETLOADAVG; 9699 INIT_WCSLEN; 9700 INIT_WCSCAT; 9701 INIT_WCSXFRM; 9702 INIT___WCSXFRM_L; 9703 INIT_ACCT; 9704 INIT_USER_FROM_UID; 9705 INIT_UID_FROM_USER; 9706 INIT_GROUP_FROM_GID; 9707 INIT_GID_FROM_GROUP; 9708 INIT_ACCESS; 9709 INIT_FACCESSAT; 9710 INIT_GETGROUPLIST; 9711 INIT_GETGROUPMEMBERSHIP; 9712 INIT_READLINK; 9713 INIT_READLINKAT; 9714 INIT_NAME_TO_HANDLE_AT; 9715 INIT_OPEN_BY_HANDLE_AT; 9716 INIT_STRLCPY; 9717 INIT_DEVNAME; 9718 INIT_DEVNAME_R; 9719 INIT_FGETLN; 9720 INIT_STRMODE; 9721 INIT_TTYENT; 9722 INIT_PROTOENT; 9723 INIT_NETENT; 9724 INIT_GETMNTINFO; 9725 INIT_MI_VECTOR_HASH; 9726 INIT_SETVBUF; 9727 INIT_GETVFSSTAT; 9728 INIT_REGEX; 9729 INIT_REGEXSUB; 9730 INIT_FTS; 9731 INIT_SYSCTL; 9732 INIT_ASYSCTL; 9733 INIT_SYSCTLGETMIBINFO; 9734 INIT_NL_LANGINFO; 9735 INIT_MODCTL; 9736 INIT_STRTONUM; 9737 INIT_FPARSELN; 9738 INIT_STATVFS1; 9739 INIT_STRTOI; 9740 INIT_CAPSICUM; 9741 INIT_SHA1; 9742 INIT_MD4; 9743 INIT_RMD160; 9744 INIT_MD5; 9745 INIT_FSEEK; 9746 INIT_MD2; 9747 INIT_SHA2; 9748 INIT_VIS; 9749 INIT_CDB; 9750 INIT_GETFSENT; 9751 INIT_ARC4RANDOM; 9752 INIT_POPEN; 9753 INIT_POPENVE; 9754 INIT_PCLOSE; 9755 INIT_FUNOPEN; 9756 INIT_FUNOPEN2; 9757 INIT_FDEVNAME; 9758 INIT_GETUSERSHELL; 9759 INIT_SL_INIT; 9760 9761 INIT___PRINTF_CHK; 9762} 9763