1 //===-- msan_interceptors.cc ----------------------------------------------===// 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 // This file is a part of MemorySanitizer. 11 // 12 // Interceptors for standard library functions. 13 // 14 // FIXME: move as many interceptors as possible into 15 // sanitizer_common/sanitizer_common_interceptors.h 16 //===----------------------------------------------------------------------===// 17 18 #include "interception/interception.h" 19 #include "msan.h" 20 #include "sanitizer_common/sanitizer_platform_limits_posix.h" 21 #include "sanitizer_common/sanitizer_allocator.h" 22 #include "sanitizer_common/sanitizer_common.h" 23 #include "sanitizer_common/sanitizer_stackdepot.h" 24 #include "sanitizer_common/sanitizer_libc.h" 25 #include "sanitizer_common/sanitizer_linux.h" 26 27 #include <stdarg.h> 28 // ACHTUNG! No other system header includes in this file. 29 // Ideally, we should get rid of stdarg.h as well. 30 31 using namespace __msan; 32 33 // True if this is a nested interceptor. 34 static THREADLOCAL int in_interceptor_scope; 35 36 struct InterceptorScope { 37 InterceptorScope() { ++in_interceptor_scope; } 38 ~InterceptorScope() { --in_interceptor_scope; } 39 }; 40 41 bool IsInInterceptorScope() { 42 return in_interceptor_scope; 43 } 44 45 #define ENSURE_MSAN_INITED() do { \ 46 CHECK(!msan_init_is_running); \ 47 if (!msan_inited) { \ 48 __msan_init(); \ 49 } \ 50 } while (0) 51 52 // Check that [x, x+n) range is unpoisoned. 53 #define CHECK_UNPOISONED_0(x, n) \ 54 do { \ 55 sptr offset = __msan_test_shadow(x, n); \ 56 if (__msan::IsInSymbolizer()) break; \ 57 if (offset >= 0 && __msan::flags()->report_umrs) { \ 58 GET_CALLER_PC_BP_SP; \ 59 (void) sp; \ 60 Printf("UMR in %s at offset %d inside [%p, +%d) \n", __FUNCTION__, \ 61 offset, x, n); \ 62 __msan::PrintWarningWithOrigin(pc, bp, \ 63 __msan_get_origin((char *)x + offset)); \ 64 if (!__msan::flags()->keep_going) { \ 65 Printf("Exiting\n"); \ 66 Die(); \ 67 } \ 68 } \ 69 } while (0) 70 71 // Check that [x, x+n) range is unpoisoned unless we are in a nested 72 // interceptor. 73 #define CHECK_UNPOISONED(x, n) \ 74 do { \ 75 if (!IsInInterceptorScope()) CHECK_UNPOISONED_0(x, n); \ 76 } while (0); 77 78 static void *fast_memset(void *ptr, int c, SIZE_T n); 79 static void *fast_memcpy(void *dst, const void *src, SIZE_T n); 80 81 INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) { 82 ENSURE_MSAN_INITED(); 83 SIZE_T res = REAL(fread)(ptr, size, nmemb, file); 84 if (res > 0) 85 __msan_unpoison(ptr, res *size); 86 return res; 87 } 88 89 INTERCEPTOR(SIZE_T, fread_unlocked, void *ptr, SIZE_T size, SIZE_T nmemb, 90 void *file) { 91 ENSURE_MSAN_INITED(); 92 SIZE_T res = REAL(fread_unlocked)(ptr, size, nmemb, file); 93 if (res > 0) 94 __msan_unpoison(ptr, res *size); 95 return res; 96 } 97 98 INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) { 99 ENSURE_MSAN_INITED(); 100 SSIZE_T res = REAL(readlink)(path, buf, bufsiz); 101 if (res > 0) 102 __msan_unpoison(buf, res); 103 return res; 104 } 105 106 INTERCEPTOR(void *, memcpy, void *dest, const void *src, SIZE_T n) { 107 return __msan_memcpy(dest, src, n); 108 } 109 110 INTERCEPTOR(void *, mempcpy, void *dest, const void *src, SIZE_T n) { 111 return (char *)__msan_memcpy(dest, src, n) + n; 112 } 113 114 INTERCEPTOR(void *, memmove, void *dest, const void *src, SIZE_T n) { 115 return __msan_memmove(dest, src, n); 116 } 117 118 INTERCEPTOR(void *, memset, void *s, int c, SIZE_T n) { 119 return __msan_memset(s, c, n); 120 } 121 122 INTERCEPTOR(void *, bcopy, const void *src, void *dest, SIZE_T n) { 123 return __msan_memmove(dest, src, n); 124 } 125 126 INTERCEPTOR(int, posix_memalign, void **memptr, SIZE_T alignment, SIZE_T size) { 127 GET_MALLOC_STACK_TRACE; 128 CHECK_EQ(alignment & (alignment - 1), 0); 129 CHECK_NE(memptr, 0); 130 *memptr = MsanReallocate(&stack, 0, size, alignment, false); 131 CHECK_NE(*memptr, 0); 132 __msan_unpoison(memptr, sizeof(*memptr)); 133 return 0; 134 } 135 136 INTERCEPTOR(void, free, void *ptr) { 137 ENSURE_MSAN_INITED(); 138 if (ptr == 0) return; 139 MsanDeallocate(ptr); 140 } 141 142 INTERCEPTOR(SIZE_T, strlen, const char *s) { 143 ENSURE_MSAN_INITED(); 144 SIZE_T res = REAL(strlen)(s); 145 CHECK_UNPOISONED(s, res + 1); 146 return res; 147 } 148 149 INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T n) { 150 ENSURE_MSAN_INITED(); 151 SIZE_T res = REAL(strnlen)(s, n); 152 SIZE_T scan_size = (res == n) ? res : res + 1; 153 CHECK_UNPOISONED(s, scan_size); 154 return res; 155 } 156 157 // FIXME: Add stricter shadow checks in str* interceptors (ex.: strcpy should 158 // check the shadow of the terminating \0 byte). 159 160 INTERCEPTOR(char *, strcpy, char *dest, const char *src) { // NOLINT 161 ENSURE_MSAN_INITED(); 162 SIZE_T n = REAL(strlen)(src); 163 char *res = REAL(strcpy)(dest, src); // NOLINT 164 __msan_copy_poison(dest, src, n + 1); 165 return res; 166 } 167 168 INTERCEPTOR(char *, strncpy, char *dest, const char *src, SIZE_T n) { // NOLINT 169 ENSURE_MSAN_INITED(); 170 SIZE_T copy_size = REAL(strnlen)(src, n); 171 if (copy_size < n) 172 copy_size++; // trailing \0 173 char *res = REAL(strncpy)(dest, src, n); // NOLINT 174 __msan_copy_poison(dest, src, copy_size); 175 return res; 176 } 177 178 INTERCEPTOR(char *, stpcpy, char *dest, const char *src) { // NOLINT 179 ENSURE_MSAN_INITED(); 180 SIZE_T n = REAL(strlen)(src); 181 char *res = REAL(stpcpy)(dest, src); // NOLINT 182 __msan_copy_poison(dest, src, n + 1); 183 return res; 184 } 185 186 INTERCEPTOR(char *, strdup, char *src) { 187 ENSURE_MSAN_INITED(); 188 SIZE_T n = REAL(strlen)(src); 189 char *res = REAL(strdup)(src); 190 __msan_copy_poison(res, src, n + 1); 191 return res; 192 } 193 194 INTERCEPTOR(char *, __strdup, char *src) { 195 ENSURE_MSAN_INITED(); 196 SIZE_T n = REAL(strlen)(src); 197 char *res = REAL(__strdup)(src); 198 __msan_copy_poison(res, src, n + 1); 199 return res; 200 } 201 202 INTERCEPTOR(char *, strndup, char *src, SIZE_T n) { 203 ENSURE_MSAN_INITED(); 204 SIZE_T copy_size = REAL(strnlen)(src, n); 205 char *res = REAL(strndup)(src, n); 206 __msan_copy_poison(res, src, copy_size); 207 __msan_unpoison(res + copy_size, 1); // \0 208 return res; 209 } 210 211 INTERCEPTOR(char *, __strndup, char *src, SIZE_T n) { 212 ENSURE_MSAN_INITED(); 213 SIZE_T copy_size = REAL(strnlen)(src, n); 214 char *res = REAL(__strndup)(src, n); 215 __msan_copy_poison(res, src, copy_size); 216 __msan_unpoison(res + copy_size, 1); // \0 217 return res; 218 } 219 220 INTERCEPTOR(char *, gcvt, double number, SIZE_T ndigit, char *buf) { 221 ENSURE_MSAN_INITED(); 222 char *res = REAL(gcvt)(number, ndigit, buf); 223 // DynamoRio tool will take care of unpoisoning gcvt result for us. 224 if (!__msan_has_dynamic_component()) { 225 SIZE_T n = REAL(strlen)(buf); 226 __msan_unpoison(buf, n + 1); 227 } 228 return res; 229 } 230 231 INTERCEPTOR(char *, strcat, char *dest, const char *src) { // NOLINT 232 ENSURE_MSAN_INITED(); 233 SIZE_T src_size = REAL(strlen)(src); 234 SIZE_T dest_size = REAL(strlen)(dest); 235 char *res = REAL(strcat)(dest, src); // NOLINT 236 __msan_copy_poison(dest + dest_size, src, src_size + 1); 237 return res; 238 } 239 240 INTERCEPTOR(char *, strncat, char *dest, const char *src, SIZE_T n) { // NOLINT 241 ENSURE_MSAN_INITED(); 242 SIZE_T dest_size = REAL(strlen)(dest); 243 SIZE_T copy_size = REAL(strlen)(src); 244 if (copy_size < n) 245 copy_size++; // trailing \0 246 char *res = REAL(strncat)(dest, src, n); // NOLINT 247 __msan_copy_poison(dest + dest_size, src, copy_size); 248 return res; 249 } 250 251 INTERCEPTOR(long, strtol, const char *nptr, char **endptr, // NOLINT 252 int base) { 253 ENSURE_MSAN_INITED(); 254 long res = REAL(strtol)(nptr, endptr, base); // NOLINT 255 if (!__msan_has_dynamic_component()) { 256 __msan_unpoison(endptr, sizeof(*endptr)); 257 } 258 return res; 259 } 260 261 INTERCEPTOR(long long, strtoll, const char *nptr, char **endptr, // NOLINT 262 int base) { 263 ENSURE_MSAN_INITED(); 264 long res = REAL(strtoll)(nptr, endptr, base); //NOLINT 265 if (!__msan_has_dynamic_component()) { 266 __msan_unpoison(endptr, sizeof(*endptr)); 267 } 268 return res; 269 } 270 271 INTERCEPTOR(unsigned long, strtoul, const char *nptr, char **endptr, // NOLINT 272 int base) { 273 ENSURE_MSAN_INITED(); 274 unsigned long res = REAL(strtoul)(nptr, endptr, base); // NOLINT 275 if (!__msan_has_dynamic_component()) { 276 __msan_unpoison(endptr, sizeof(*endptr)); 277 } 278 return res; 279 } 280 281 INTERCEPTOR(unsigned long long, strtoull, const char *nptr, // NOLINT 282 char **endptr, int base) { 283 ENSURE_MSAN_INITED(); 284 unsigned long res = REAL(strtoull)(nptr, endptr, base); // NOLINT 285 if (!__msan_has_dynamic_component()) { 286 __msan_unpoison(endptr, sizeof(*endptr)); 287 } 288 return res; 289 } 290 291 INTERCEPTOR(double, strtod, const char *nptr, char **endptr) { // NOLINT 292 ENSURE_MSAN_INITED(); 293 double res = REAL(strtod)(nptr, endptr); // NOLINT 294 if (!__msan_has_dynamic_component()) { 295 __msan_unpoison(endptr, sizeof(*endptr)); 296 } 297 return res; 298 } 299 300 INTERCEPTOR(float, strtof, const char *nptr, char **endptr) { // NOLINT 301 ENSURE_MSAN_INITED(); 302 float res = REAL(strtof)(nptr, endptr); // NOLINT 303 if (!__msan_has_dynamic_component()) { 304 __msan_unpoison(endptr, sizeof(*endptr)); 305 } 306 return res; 307 } 308 309 INTERCEPTOR(long double, strtold, const char *nptr, char **endptr) { // NOLINT 310 ENSURE_MSAN_INITED(); 311 long double res = REAL(strtold)(nptr, endptr); // NOLINT 312 if (!__msan_has_dynamic_component()) { 313 __msan_unpoison(endptr, sizeof(*endptr)); 314 } 315 return res; 316 } 317 318 INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap) { 319 ENSURE_MSAN_INITED(); 320 int res = REAL(vasprintf)(strp, format, ap); 321 if (res >= 0 && !__msan_has_dynamic_component()) { 322 __msan_unpoison(strp, sizeof(*strp)); 323 __msan_unpoison(*strp, res + 1); 324 } 325 return res; 326 } 327 328 INTERCEPTOR(int, asprintf, char **strp, const char *format, ...) { // NOLINT 329 ENSURE_MSAN_INITED(); 330 va_list ap; 331 va_start(ap, format); 332 int res = vasprintf(strp, format, ap); // NOLINT 333 va_end(ap); 334 return res; 335 } 336 337 INTERCEPTOR(int, vsnprintf, char *str, uptr size, 338 const char *format, va_list ap) { 339 ENSURE_MSAN_INITED(); 340 int res = REAL(vsnprintf)(str, size, format, ap); 341 if (res >= 0 && !__msan_has_dynamic_component()) { 342 __msan_unpoison(str, res + 1); 343 } 344 return res; 345 } 346 347 INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap) { 348 ENSURE_MSAN_INITED(); 349 int res = REAL(vsprintf)(str, format, ap); 350 if (res >= 0 && !__msan_has_dynamic_component()) { 351 __msan_unpoison(str, res + 1); 352 } 353 return res; 354 } 355 356 INTERCEPTOR(int, vswprintf, void *str, uptr size, void *format, va_list ap) { 357 ENSURE_MSAN_INITED(); 358 int res = REAL(vswprintf)(str, size, format, ap); 359 if (res >= 0 && !__msan_has_dynamic_component()) { 360 __msan_unpoison(str, 4 * (res + 1)); 361 } 362 return res; 363 } 364 365 INTERCEPTOR(int, sprintf, char *str, const char *format, ...) { // NOLINT 366 ENSURE_MSAN_INITED(); 367 va_list ap; 368 va_start(ap, format); 369 int res = vsprintf(str, format, ap); // NOLINT 370 va_end(ap); 371 return res; 372 } 373 374 INTERCEPTOR(int, snprintf, char *str, uptr size, const char *format, ...) { 375 ENSURE_MSAN_INITED(); 376 va_list ap; 377 va_start(ap, format); 378 int res = vsnprintf(str, size, format, ap); 379 va_end(ap); 380 return res; 381 } 382 383 INTERCEPTOR(int, swprintf, void *str, uptr size, void *format, ...) { 384 ENSURE_MSAN_INITED(); 385 va_list ap; 386 va_start(ap, format); 387 int res = vswprintf(str, size, format, ap); 388 va_end(ap); 389 return res; 390 } 391 392 // SIZE_T strftime(char *s, SIZE_T max, const char *format,const struct tm *tm); 393 INTERCEPTOR(SIZE_T, strftime, char *s, SIZE_T max, const char *format, 394 void *tm) { 395 ENSURE_MSAN_INITED(); 396 SIZE_T res = REAL(strftime)(s, max, format, tm); 397 if (res) __msan_unpoison(s, res + 1); 398 return res; 399 } 400 401 INTERCEPTOR(int, mbtowc, wchar_t *dest, const char *src, SIZE_T n) { 402 ENSURE_MSAN_INITED(); 403 int res = REAL(mbtowc)(dest, src, n); 404 if (res != -1 && dest) __msan_unpoison(dest, sizeof(wchar_t)); 405 return res; 406 } 407 408 INTERCEPTOR(int, mbrtowc, wchar_t *dest, const char *src, SIZE_T n, void *ps) { 409 ENSURE_MSAN_INITED(); 410 SIZE_T res = REAL(mbrtowc)(dest, src, n, ps); 411 if (res != (SIZE_T)-1 && dest) __msan_unpoison(dest, sizeof(wchar_t)); 412 return res; 413 } 414 415 INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) { 416 ENSURE_MSAN_INITED(); 417 SIZE_T res = REAL(wcslen)(s); 418 CHECK_UNPOISONED(s, sizeof(wchar_t) * (res + 1)); 419 return res; 420 } 421 422 // wchar_t *wcschr(const wchar_t *wcs, wchar_t wc); 423 INTERCEPTOR(wchar_t *, wcschr, void *s, wchar_t wc, void *ps) { 424 ENSURE_MSAN_INITED(); 425 wchar_t *res = REAL(wcschr)(s, wc, ps); 426 return res; 427 } 428 429 // wchar_t *wcscpy(wchar_t *dest, const wchar_t *src); 430 INTERCEPTOR(wchar_t *, wcscpy, wchar_t *dest, const wchar_t *src) { 431 ENSURE_MSAN_INITED(); 432 wchar_t *res = REAL(wcscpy)(dest, src); 433 __msan_copy_poison(dest, src, sizeof(wchar_t) * (REAL(wcslen)(src) + 1)); 434 return res; 435 } 436 437 // wchar_t *wmemcpy(wchar_t *dest, const wchar_t *src, SIZE_T n); 438 INTERCEPTOR(wchar_t *, wmemcpy, wchar_t *dest, const wchar_t *src, SIZE_T n) { 439 ENSURE_MSAN_INITED(); 440 wchar_t *res = REAL(wmemcpy)(dest, src, n); 441 __msan_copy_poison(dest, src, n * sizeof(wchar_t)); 442 return res; 443 } 444 445 INTERCEPTOR(wchar_t *, wmempcpy, wchar_t *dest, const wchar_t *src, SIZE_T n) { 446 ENSURE_MSAN_INITED(); 447 wchar_t *res = REAL(wmempcpy)(dest, src, n); 448 __msan_copy_poison(dest, src, n * sizeof(wchar_t)); 449 return res; 450 } 451 452 INTERCEPTOR(wchar_t *, wmemset, wchar_t *s, wchar_t c, SIZE_T n) { 453 CHECK(MEM_IS_APP(s)); 454 ENSURE_MSAN_INITED(); 455 wchar_t *res = (wchar_t *)fast_memset(s, c, n * sizeof(wchar_t)); 456 __msan_unpoison(s, n * sizeof(wchar_t)); 457 return res; 458 } 459 460 INTERCEPTOR(wchar_t *, wmemmove, wchar_t *dest, const wchar_t *src, SIZE_T n) { 461 ENSURE_MSAN_INITED(); 462 wchar_t *res = REAL(wmemmove)(dest, src, n); 463 __msan_move_poison(dest, src, n * sizeof(wchar_t)); 464 return res; 465 } 466 467 INTERCEPTOR(int, wcscmp, const wchar_t *s1, const wchar_t *s2) { 468 ENSURE_MSAN_INITED(); 469 int res = REAL(wcscmp)(s1, s2); 470 return res; 471 } 472 473 INTERCEPTOR(double, wcstod, const wchar_t *nptr, wchar_t **endptr) { 474 ENSURE_MSAN_INITED(); 475 double res = REAL(wcstod)(nptr, endptr); 476 __msan_unpoison(endptr, sizeof(*endptr)); 477 return res; 478 } 479 480 // #define UNSUPPORTED(name) \ 481 // INTERCEPTOR(void, name, void) { \ 482 // Printf("MSAN: Unsupported %s\n", __FUNCTION__); \ 483 // Die(); \ 484 // } 485 486 // FIXME: intercept the following functions: 487 // Note, they only matter when running without a dynamic tool. 488 // UNSUPPORTED(wcscoll_l) 489 // UNSUPPORTED(wcsnrtombs) 490 // UNSUPPORTED(wcstol) 491 // UNSUPPORTED(wcstoll) 492 // UNSUPPORTED(wcstold) 493 // UNSUPPORTED(wcstoul) 494 // UNSUPPORTED(wcstoull) 495 // UNSUPPORTED(wcsxfrm_l) 496 // UNSUPPORTED(wcsdup) 497 // UNSUPPORTED(wcsftime) 498 // UNSUPPORTED(wcsstr) 499 // UNSUPPORTED(wcsrchr) 500 // UNSUPPORTED(wctob) 501 502 INTERCEPTOR(int, gettimeofday, void *tv, void *tz) { 503 ENSURE_MSAN_INITED(); 504 int res = REAL(gettimeofday)(tv, tz); 505 if (tv) 506 __msan_unpoison(tv, 16); 507 if (tz) 508 __msan_unpoison(tz, 8); 509 return res; 510 } 511 512 INTERCEPTOR(char *, fcvt, double x, int a, int *b, int *c) { 513 ENSURE_MSAN_INITED(); 514 char *res = REAL(fcvt)(x, a, b, c); 515 if (!__msan_has_dynamic_component()) { 516 __msan_unpoison(b, sizeof(*b)); 517 __msan_unpoison(c, sizeof(*c)); 518 } 519 return res; 520 } 521 522 INTERCEPTOR(char *, getenv, char *name) { 523 ENSURE_MSAN_INITED(); 524 char *res = REAL(getenv)(name); 525 if (!__msan_has_dynamic_component()) { 526 if (res) 527 __msan_unpoison(res, REAL(strlen)(res) + 1); 528 } 529 return res; 530 } 531 532 extern char **environ; 533 534 static void UnpoisonEnviron() { 535 char **envp = environ; 536 for (; *envp; ++envp) { 537 __msan_unpoison(envp, sizeof(*envp)); 538 __msan_unpoison(*envp, REAL(strlen)(*envp) + 1); 539 } 540 // Trailing NULL pointer. 541 __msan_unpoison(envp, sizeof(*envp)); 542 } 543 544 INTERCEPTOR(int, setenv, const char *name, const char *value, int overwrite) { 545 ENSURE_MSAN_INITED(); 546 int res = REAL(setenv)(name, value, overwrite); 547 if (!res) UnpoisonEnviron(); 548 return res; 549 } 550 551 INTERCEPTOR(int, putenv, char *string) { 552 ENSURE_MSAN_INITED(); 553 int res = REAL(putenv)(string); 554 if (!res) UnpoisonEnviron(); 555 return res; 556 } 557 558 INTERCEPTOR(int, __fxstat, int magic, int fd, void *buf) { 559 ENSURE_MSAN_INITED(); 560 int res = REAL(__fxstat)(magic, fd, buf); 561 if (!res) 562 __msan_unpoison(buf, __sanitizer::struct_stat_sz); 563 return res; 564 } 565 566 INTERCEPTOR(int, __fxstat64, int magic, int fd, void *buf) { 567 ENSURE_MSAN_INITED(); 568 int res = REAL(__fxstat64)(magic, fd, buf); 569 if (!res) 570 __msan_unpoison(buf, __sanitizer::struct_stat64_sz); 571 return res; 572 } 573 574 INTERCEPTOR(int, __xstat, int magic, char *path, void *buf) { 575 ENSURE_MSAN_INITED(); 576 int res = REAL(__xstat)(magic, path, buf); 577 if (!res) 578 __msan_unpoison(buf, __sanitizer::struct_stat_sz); 579 return res; 580 } 581 582 INTERCEPTOR(int, __xstat64, int magic, char *path, void *buf) { 583 ENSURE_MSAN_INITED(); 584 int res = REAL(__xstat64)(magic, path, buf); 585 if (!res) 586 __msan_unpoison(buf, __sanitizer::struct_stat64_sz); 587 return res; 588 } 589 590 INTERCEPTOR(int, __lxstat, int magic, char *path, void *buf) { 591 ENSURE_MSAN_INITED(); 592 int res = REAL(__lxstat)(magic, path, buf); 593 if (!res) 594 __msan_unpoison(buf, __sanitizer::struct_stat_sz); 595 return res; 596 } 597 598 INTERCEPTOR(int, __lxstat64, int magic, char *path, void *buf) { 599 ENSURE_MSAN_INITED(); 600 int res = REAL(__lxstat64)(magic, path, buf); 601 if (!res) 602 __msan_unpoison(buf, __sanitizer::struct_stat64_sz); 603 return res; 604 } 605 606 INTERCEPTOR(int, pipe, int pipefd[2]) { 607 if (msan_init_is_running) 608 return REAL(pipe)(pipefd); 609 ENSURE_MSAN_INITED(); 610 int res = REAL(pipe)(pipefd); 611 if (!res) 612 __msan_unpoison(pipefd, sizeof(int[2])); 613 return res; 614 } 615 616 INTERCEPTOR(int, pipe2, int pipefd[2], int flags) { 617 ENSURE_MSAN_INITED(); 618 int res = REAL(pipe2)(pipefd, flags); 619 if (!res) 620 __msan_unpoison(pipefd, sizeof(int[2])); 621 return res; 622 } 623 624 INTERCEPTOR(int, socketpair, int domain, int type, int protocol, int sv[2]) { 625 ENSURE_MSAN_INITED(); 626 int res = REAL(socketpair)(domain, type, protocol, sv); 627 if (!res) 628 __msan_unpoison(sv, sizeof(int[2])); 629 return res; 630 } 631 632 INTERCEPTOR(char *, fgets, char *s, int size, void *stream) { 633 ENSURE_MSAN_INITED(); 634 char *res = REAL(fgets)(s, size, stream); 635 if (res) 636 __msan_unpoison(s, REAL(strlen)(s) + 1); 637 return res; 638 } 639 640 INTERCEPTOR(char *, fgets_unlocked, char *s, int size, void *stream) { 641 ENSURE_MSAN_INITED(); 642 char *res = REAL(fgets_unlocked)(s, size, stream); 643 if (res) 644 __msan_unpoison(s, REAL(strlen)(s) + 1); 645 return res; 646 } 647 648 INTERCEPTOR(int, getrlimit, int resource, void *rlim) { 649 if (msan_init_is_running) 650 return REAL(getrlimit)(resource, rlim); 651 ENSURE_MSAN_INITED(); 652 int res = REAL(getrlimit)(resource, rlim); 653 if (!res) 654 __msan_unpoison(rlim, __sanitizer::struct_rlimit_sz); 655 return res; 656 } 657 658 INTERCEPTOR(int, getrlimit64, int resource, void *rlim) { 659 if (msan_init_is_running) 660 return REAL(getrlimit64)(resource, rlim); 661 ENSURE_MSAN_INITED(); 662 int res = REAL(getrlimit64)(resource, rlim); 663 if (!res) 664 __msan_unpoison(rlim, __sanitizer::struct_rlimit64_sz); 665 return res; 666 } 667 668 INTERCEPTOR(int, statfs, const char *s, void *buf) { 669 ENSURE_MSAN_INITED(); 670 int res = REAL(statfs)(s, buf); 671 if (!res) 672 __msan_unpoison(buf, __sanitizer::struct_statfs_sz); 673 return res; 674 } 675 676 INTERCEPTOR(int, fstatfs, int fd, void *buf) { 677 ENSURE_MSAN_INITED(); 678 int res = REAL(fstatfs)(fd, buf); 679 if (!res) 680 __msan_unpoison(buf, __sanitizer::struct_statfs_sz); 681 return res; 682 } 683 684 INTERCEPTOR(int, statfs64, const char *s, void *buf) { 685 ENSURE_MSAN_INITED(); 686 int res = REAL(statfs64)(s, buf); 687 if (!res) 688 __msan_unpoison(buf, __sanitizer::struct_statfs64_sz); 689 return res; 690 } 691 692 INTERCEPTOR(int, fstatfs64, int fd, void *buf) { 693 ENSURE_MSAN_INITED(); 694 int res = REAL(fstatfs64)(fd, buf); 695 if (!res) 696 __msan_unpoison(buf, __sanitizer::struct_statfs64_sz); 697 return res; 698 } 699 700 INTERCEPTOR(int, uname, void *utsname) { 701 ENSURE_MSAN_INITED(); 702 int res = REAL(uname)(utsname); 703 if (!res) { 704 __msan_unpoison(utsname, __sanitizer::struct_utsname_sz); 705 } 706 return res; 707 } 708 709 INTERCEPTOR(int, gethostname, char *name, SIZE_T len) { 710 ENSURE_MSAN_INITED(); 711 int res = REAL(gethostname)(name, len); 712 if (!res) { 713 SIZE_T real_len = REAL(strnlen)(name, len); 714 if (real_len < len) 715 ++real_len; 716 __msan_unpoison(name, real_len); 717 } 718 return res; 719 } 720 721 INTERCEPTOR(int, epoll_wait, int epfd, void *events, int maxevents, 722 int timeout) { 723 ENSURE_MSAN_INITED(); 724 int res = REAL(epoll_wait)(epfd, events, maxevents, timeout); 725 if (res > 0) { 726 __msan_unpoison(events, __sanitizer::struct_epoll_event_sz * res); 727 } 728 return res; 729 } 730 731 INTERCEPTOR(int, epoll_pwait, int epfd, void *events, int maxevents, 732 int timeout, void *sigmask) { 733 ENSURE_MSAN_INITED(); 734 int res = REAL(epoll_pwait)(epfd, events, maxevents, timeout, sigmask); 735 if (res > 0) { 736 __msan_unpoison(events, __sanitizer::struct_epoll_event_sz * res); 737 } 738 return res; 739 } 740 741 INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) { 742 ENSURE_MSAN_INITED(); 743 SSIZE_T res = REAL(recv)(fd, buf, len, flags); 744 if (res > 0) 745 __msan_unpoison(buf, res); 746 return res; 747 } 748 749 INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags, 750 void *srcaddr, int *addrlen) { 751 ENSURE_MSAN_INITED(); 752 SIZE_T srcaddr_sz; 753 if (srcaddr) srcaddr_sz = *addrlen; 754 SSIZE_T res = REAL(recvfrom)(fd, buf, len, flags, srcaddr, addrlen); 755 if (res > 0) { 756 __msan_unpoison(buf, res); 757 if (srcaddr) { 758 SIZE_T sz = *addrlen; 759 __msan_unpoison(srcaddr, (sz < srcaddr_sz) ? sz : srcaddr_sz); 760 } 761 } 762 return res; 763 } 764 765 INTERCEPTOR(void *, calloc, SIZE_T nmemb, SIZE_T size) { 766 if (CallocShouldReturnNullDueToOverflow(size, nmemb)) return 0; 767 GET_MALLOC_STACK_TRACE; 768 if (!msan_inited) { 769 // Hack: dlsym calls calloc before REAL(calloc) is retrieved from dlsym. 770 const SIZE_T kCallocPoolSize = 1024; 771 static uptr calloc_memory_for_dlsym[kCallocPoolSize]; 772 static SIZE_T allocated; 773 SIZE_T size_in_words = ((nmemb * size) + kWordSize - 1) / kWordSize; 774 void *mem = (void*)&calloc_memory_for_dlsym[allocated]; 775 allocated += size_in_words; 776 CHECK(allocated < kCallocPoolSize); 777 return mem; 778 } 779 return MsanReallocate(&stack, 0, nmemb * size, sizeof(u64), true); 780 } 781 782 INTERCEPTOR(void *, realloc, void *ptr, SIZE_T size) { 783 GET_MALLOC_STACK_TRACE; 784 return MsanReallocate(&stack, ptr, size, sizeof(u64), false); 785 } 786 787 INTERCEPTOR(void *, malloc, SIZE_T size) { 788 GET_MALLOC_STACK_TRACE; 789 return MsanReallocate(&stack, 0, size, sizeof(u64), false); 790 } 791 792 void __msan_allocated_memory(const void* data, uptr size) { 793 GET_MALLOC_STACK_TRACE; 794 if (flags()->poison_in_malloc) 795 __msan_poison(data, size); 796 if (__msan_get_track_origins()) { 797 u32 stack_id = StackDepotPut(stack.trace, stack.size); 798 CHECK(stack_id); 799 CHECK_EQ((stack_id >> 31), 0); // Higher bit is occupied by stack origins. 800 __msan_set_origin(data, size, stack_id); 801 } 802 } 803 804 INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags, 805 int fd, OFF_T offset) { 806 ENSURE_MSAN_INITED(); 807 void *res = REAL(mmap)(addr, length, prot, flags, fd, offset); 808 if (res != (void*)-1) 809 __msan_unpoison(res, RoundUpTo(length, GetPageSize())); 810 return res; 811 } 812 813 INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags, 814 int fd, OFF64_T offset) { 815 ENSURE_MSAN_INITED(); 816 void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset); 817 if (res != (void*)-1) 818 __msan_unpoison(res, RoundUpTo(length, GetPageSize())); 819 return res; 820 } 821 822 struct dlinfo { 823 char *dli_fname; 824 void *dli_fbase; 825 char *dli_sname; 826 void *dli_saddr; 827 }; 828 829 INTERCEPTOR(int, dladdr, void *addr, dlinfo *info) { 830 ENSURE_MSAN_INITED(); 831 int res = REAL(dladdr)(addr, info); 832 if (res != 0) { 833 __msan_unpoison(info, sizeof(*info)); 834 if (info->dli_fname) 835 __msan_unpoison(info->dli_fname, REAL(strlen)(info->dli_fname) + 1); 836 if (info->dli_sname) 837 __msan_unpoison(info->dli_sname, REAL(strlen)(info->dli_sname) + 1); 838 } 839 return res; 840 } 841 842 // dlopen() ultimately calls mmap() down inside the loader, which generally 843 // doesn't participate in dynamic symbol resolution. Therefore we won't 844 // intercept its calls to mmap, and we have to hook it here. The loader 845 // initializes the module before returning, so without the dynamic component, we 846 // won't be able to clear the shadow before the initializers. Fixing this would 847 // require putting our own initializer first to clear the shadow. 848 INTERCEPTOR(void *, dlopen, const char *filename, int flag) { 849 ENSURE_MSAN_INITED(); 850 EnterLoader(); 851 link_map *map = (link_map *)REAL(dlopen)(filename, flag); 852 ExitLoader(); 853 if (!__msan_has_dynamic_component() && map) { 854 // If msandr didn't clear the shadow before the initializers ran, we do it 855 // ourselves afterwards. 856 ForEachMappedRegion(map, __msan_unpoison); 857 } 858 return (void *)map; 859 } 860 861 typedef int (*dl_iterate_phdr_cb)(__sanitizer_dl_phdr_info *info, SIZE_T size, 862 void *data); 863 struct dl_iterate_phdr_data { 864 dl_iterate_phdr_cb callback; 865 void *data; 866 }; 867 868 static int msan_dl_iterate_phdr_cb(__sanitizer_dl_phdr_info *info, SIZE_T size, 869 void *data) { 870 if (info) { 871 __msan_unpoison(info, size); 872 if (info->dlpi_name) 873 __msan_unpoison(info->dlpi_name, REAL(strlen)(info->dlpi_name) + 1); 874 } 875 dl_iterate_phdr_data *cbdata = (dl_iterate_phdr_data *)data; 876 UnpoisonParam(3); 877 return cbdata->callback(info, size, cbdata->data); 878 } 879 880 INTERCEPTOR(int, dl_iterate_phdr, dl_iterate_phdr_cb callback, void *data) { 881 ENSURE_MSAN_INITED(); 882 EnterLoader(); 883 dl_iterate_phdr_data cbdata; 884 cbdata.callback = callback; 885 cbdata.data = data; 886 int res = REAL(dl_iterate_phdr)(msan_dl_iterate_phdr_cb, (void *)&cbdata); 887 ExitLoader(); 888 return res; 889 } 890 891 INTERCEPTOR(int, getrusage, int who, void *usage) { 892 ENSURE_MSAN_INITED(); 893 int res = REAL(getrusage)(who, usage); 894 if (res == 0) { 895 __msan_unpoison(usage, __sanitizer::struct_rusage_sz); 896 } 897 return res; 898 } 899 900 const int kMaxSignals = 1024; 901 static uptr sigactions[kMaxSignals]; 902 static StaticSpinMutex sigactions_mu; 903 904 static void SignalHandler(int signo) { 905 typedef void (*signal_cb)(int x); 906 signal_cb cb = (signal_cb)sigactions[signo]; 907 cb(signo); 908 } 909 910 static void SignalAction(int signo, void *si, void *uc) { 911 UnpoisonParam(3); 912 __msan_unpoison(si, __sanitizer::struct_sigaction_sz); 913 __msan_unpoison(uc, __sanitizer::ucontext_t_sz); 914 915 typedef void (*sigaction_cb)(int, void *, void *); 916 sigaction_cb cb = (sigaction_cb)sigactions[signo]; 917 cb(signo, si, uc); 918 } 919 920 INTERCEPTOR(int, sigaction, int signo, const __sanitizer_sigaction *act, 921 __sanitizer_sigaction *oldact) { 922 ENSURE_MSAN_INITED(); 923 // FIXME: check that *act is unpoisoned. 924 // That requires intercepting all of sigemptyset, sigfillset, etc. 925 int res; 926 if (flags()->wrap_signals) { 927 SpinMutexLock lock(&sigactions_mu); 928 CHECK_LT(signo, kMaxSignals); 929 uptr old_cb = sigactions[signo]; 930 __sanitizer_sigaction new_act; 931 __sanitizer_sigaction *pnew_act = act ? &new_act : 0; 932 if (act) { 933 internal_memcpy(pnew_act, act, __sanitizer::struct_sigaction_sz); 934 uptr cb = __sanitizer::__sanitizer_get_sigaction_sa_sigaction(pnew_act); 935 uptr new_cb = 936 __sanitizer::__sanitizer_get_sigaction_sa_siginfo(pnew_act) ? 937 (uptr)SignalAction : (uptr)SignalHandler; 938 if (cb != __sanitizer::sig_ign && cb != __sanitizer::sig_dfl) { 939 sigactions[signo] = cb; 940 __sanitizer::__sanitizer_set_sigaction_sa_sigaction(pnew_act, new_cb); 941 } 942 } 943 res = REAL(sigaction)(signo, pnew_act, oldact); 944 if (res == 0 && oldact) { 945 uptr cb = __sanitizer::__sanitizer_get_sigaction_sa_sigaction(oldact); 946 if (cb != __sanitizer::sig_ign && cb != __sanitizer::sig_dfl) { 947 __sanitizer::__sanitizer_set_sigaction_sa_sigaction(oldact, old_cb); 948 } 949 } 950 } else { 951 res = REAL(sigaction)(signo, act, oldact); 952 } 953 954 if (res == 0 && oldact) { 955 __msan_unpoison(oldact, __sanitizer::struct_sigaction_sz); 956 } 957 return res; 958 } 959 960 INTERCEPTOR(int, signal, int signo, uptr cb) { 961 ENSURE_MSAN_INITED(); 962 if (flags()->wrap_signals) { 963 CHECK_LT(signo, kMaxSignals); 964 SpinMutexLock lock(&sigactions_mu); 965 if (cb != __sanitizer::sig_ign && cb != __sanitizer::sig_dfl) { 966 sigactions[signo] = cb; 967 cb = (uptr) SignalHandler; 968 } 969 return REAL(signal)(signo, cb); 970 } else { 971 return REAL(signal)(signo, cb); 972 } 973 } 974 975 extern "C" int pthread_attr_init(void *attr); 976 extern "C" int pthread_attr_destroy(void *attr); 977 extern "C" int pthread_attr_setstacksize(void *attr, uptr stacksize); 978 extern "C" int pthread_attr_getstack(void *attr, uptr *stack, uptr *stacksize); 979 980 INTERCEPTOR(int, pthread_create, void *th, void *attr, void *(*callback)(void*), 981 void * param) { 982 ENSURE_MSAN_INITED(); // for GetTlsSize() 983 __sanitizer_pthread_attr_t myattr; 984 if (attr == 0) { 985 pthread_attr_init(&myattr); 986 attr = &myattr; 987 } 988 989 AdjustStackSizeLinux(attr, flags()->verbosity); 990 991 int res = REAL(pthread_create)(th, attr, callback, param); 992 if (attr == &myattr) 993 pthread_attr_destroy(&myattr); 994 if (!res) { 995 __msan_unpoison(th, __sanitizer::pthread_t_sz); 996 } 997 return res; 998 } 999 1000 INTERCEPTOR(int, pthread_key_create, __sanitizer_pthread_key_t *key, 1001 void (*dtor)(void *value)) { 1002 ENSURE_MSAN_INITED(); 1003 int res = REAL(pthread_key_create)(key, dtor); 1004 if (!res && key) 1005 __msan_unpoison(key, sizeof(*key)); 1006 return res; 1007 } 1008 1009 INTERCEPTOR(int, pthread_join, void *th, void **retval) { 1010 ENSURE_MSAN_INITED(); 1011 int res = REAL(pthread_join)(th, retval); 1012 if (!res && retval) 1013 __msan_unpoison(retval, sizeof(*retval)); 1014 return res; 1015 } 1016 1017 struct MSanInterceptorContext { 1018 bool in_interceptor_scope; 1019 }; 1020 1021 // A version of CHECK_UNPOISED using a saved scope value. Used in common 1022 // interceptors. 1023 #define CHECK_UNPOISONED_CTX(ctx, x, n) \ 1024 do { \ 1025 if (!((MSanInterceptorContext *)ctx)->in_interceptor_scope) \ 1026 CHECK_UNPOISONED_0(x, n); \ 1027 } while (0) 1028 1029 #define COMMON_INTERCEPTOR_UNPOISON_PARAM(ctx, count) \ 1030 UnpoisonParam(count) 1031 #define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \ 1032 __msan_unpoison(ptr, size) 1033 #define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \ 1034 CHECK_UNPOISONED_CTX(ctx, ptr, size) 1035 #define COMMON_INTERCEPTOR_ENTER(ctx, func, ...) \ 1036 if (msan_init_is_running) return REAL(func)(__VA_ARGS__); \ 1037 MSanInterceptorContext msan_ctx = {IsInInterceptorScope()}; \ 1038 ctx = (void *)&msan_ctx; \ 1039 InterceptorScope interceptor_scope; \ 1040 ENSURE_MSAN_INITED(); 1041 #define COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd) \ 1042 do { \ 1043 } while (false) 1044 #define COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd) \ 1045 do { \ 1046 } while (false) 1047 #define COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, newfd) \ 1048 do { \ 1049 } while (false) 1050 #define COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, name) \ 1051 do { \ 1052 } while (false) // FIXME 1053 #include "sanitizer_common/sanitizer_common_interceptors.inc" 1054 1055 #define COMMON_SYSCALL_PRE_READ_RANGE(p, s) CHECK_UNPOISONED(p, s) 1056 #define COMMON_SYSCALL_PRE_WRITE_RANGE(p, s) 1057 #define COMMON_SYSCALL_POST_READ_RANGE(p, s) 1058 #define COMMON_SYSCALL_POST_WRITE_RANGE(p, s) __msan_unpoison(p, s) 1059 #include "sanitizer_common/sanitizer_common_syscalls.inc" 1060 1061 // static 1062 void *fast_memset(void *ptr, int c, SIZE_T n) { 1063 // hack until we have a really fast internal_memset 1064 if (sizeof(uptr) == 8 && 1065 (n % 8) == 0 && 1066 ((uptr)ptr % 8) == 0 && 1067 (c == 0 || c == -1)) { 1068 // Printf("memset %p %zd %x\n", ptr, n, c); 1069 uptr to_store = c ? -1L : 0L; 1070 uptr *p = (uptr*)ptr; 1071 for (SIZE_T i = 0; i < n / 8; i++) 1072 p[i] = to_store; 1073 return ptr; 1074 } 1075 return internal_memset(ptr, c, n); 1076 } 1077 1078 // static 1079 void *fast_memcpy(void *dst, const void *src, SIZE_T n) { 1080 // Same hack as in fast_memset above. 1081 if (sizeof(uptr) == 8 && 1082 (n % 8) == 0 && 1083 ((uptr)dst % 8) == 0 && 1084 ((uptr)src % 8) == 0) { 1085 uptr *d = (uptr*)dst; 1086 uptr *s = (uptr*)src; 1087 for (SIZE_T i = 0; i < n / 8; i++) 1088 d[i] = s[i]; 1089 return dst; 1090 } 1091 return internal_memcpy(dst, src, n); 1092 } 1093 1094 // These interface functions reside here so that they can use 1095 // fast_memset, etc. 1096 void __msan_unpoison(const void *a, uptr size) { 1097 if (!MEM_IS_APP(a)) return; 1098 fast_memset((void*)MEM_TO_SHADOW((uptr)a), 0, size); 1099 } 1100 1101 void __msan_poison(const void *a, uptr size) { 1102 if (!MEM_IS_APP(a)) return; 1103 fast_memset((void*)MEM_TO_SHADOW((uptr)a), 1104 __msan::flags()->poison_heap_with_zeroes ? 0 : -1, size); 1105 } 1106 1107 void __msan_poison_stack(void *a, uptr size) { 1108 if (!MEM_IS_APP(a)) return; 1109 fast_memset((void*)MEM_TO_SHADOW((uptr)a), 1110 __msan::flags()->poison_stack_with_zeroes ? 0 : -1, size); 1111 } 1112 1113 void __msan_clear_and_unpoison(void *a, uptr size) { 1114 fast_memset(a, 0, size); 1115 fast_memset((void*)MEM_TO_SHADOW((uptr)a), 0, size); 1116 } 1117 1118 void __msan_copy_origin(void *dst, const void *src, uptr size) { 1119 if (!__msan_get_track_origins()) return; 1120 if (!MEM_IS_APP(dst) || !MEM_IS_APP(src)) return; 1121 uptr d = MEM_TO_ORIGIN(dst); 1122 uptr s = MEM_TO_ORIGIN(src); 1123 uptr beg = d & ~3UL; // align down. 1124 uptr end = (d + size + 3) & ~3UL; // align up. 1125 s = s & ~3UL; // align down. 1126 fast_memcpy((void*)beg, (void*)s, end - beg); 1127 } 1128 1129 void __msan_copy_poison(void *dst, const void *src, uptr size) { 1130 if (!MEM_IS_APP(dst)) return; 1131 if (!MEM_IS_APP(src)) return; 1132 fast_memcpy((void*)MEM_TO_SHADOW((uptr)dst), 1133 (void*)MEM_TO_SHADOW((uptr)src), size); 1134 __msan_copy_origin(dst, src, size); 1135 } 1136 1137 void __msan_move_poison(void *dst, const void *src, uptr size) { 1138 if (!MEM_IS_APP(dst)) return; 1139 if (!MEM_IS_APP(src)) return; 1140 internal_memmove((void*)MEM_TO_SHADOW((uptr)dst), 1141 (void*)MEM_TO_SHADOW((uptr)src), size); 1142 __msan_copy_origin(dst, src, size); 1143 } 1144 1145 void *__msan_memcpy(void *dest, const void *src, SIZE_T n) { 1146 ENSURE_MSAN_INITED(); 1147 void *res = fast_memcpy(dest, src, n); 1148 __msan_copy_poison(dest, src, n); 1149 return res; 1150 } 1151 1152 void *__msan_memset(void *s, int c, SIZE_T n) { 1153 ENSURE_MSAN_INITED(); 1154 void *res = fast_memset(s, c, n); 1155 __msan_unpoison(s, n); 1156 return res; 1157 } 1158 1159 void *__msan_memmove(void *dest, const void *src, SIZE_T n) { 1160 ENSURE_MSAN_INITED(); 1161 void *res = REAL(memmove)(dest, src, n); 1162 __msan_move_poison(dest, src, n); 1163 return res; 1164 } 1165 1166 namespace __msan { 1167 void InitializeInterceptors() { 1168 static int inited = 0; 1169 CHECK_EQ(inited, 0); 1170 SANITIZER_COMMON_INTERCEPTORS_INIT; 1171 1172 INTERCEPT_FUNCTION(mmap); 1173 INTERCEPT_FUNCTION(mmap64); 1174 INTERCEPT_FUNCTION(posix_memalign); 1175 INTERCEPT_FUNCTION(malloc); 1176 INTERCEPT_FUNCTION(calloc); 1177 INTERCEPT_FUNCTION(realloc); 1178 INTERCEPT_FUNCTION(free); 1179 INTERCEPT_FUNCTION(fread); 1180 INTERCEPT_FUNCTION(fread_unlocked); 1181 INTERCEPT_FUNCTION(readlink); 1182 INTERCEPT_FUNCTION(memcpy); 1183 INTERCEPT_FUNCTION(mempcpy); 1184 INTERCEPT_FUNCTION(memset); 1185 INTERCEPT_FUNCTION(memmove); 1186 INTERCEPT_FUNCTION(bcopy); 1187 INTERCEPT_FUNCTION(wmemset); 1188 INTERCEPT_FUNCTION(wmemcpy); 1189 INTERCEPT_FUNCTION(wmempcpy); 1190 INTERCEPT_FUNCTION(wmemmove); 1191 INTERCEPT_FUNCTION(strcpy); // NOLINT 1192 INTERCEPT_FUNCTION(stpcpy); // NOLINT 1193 INTERCEPT_FUNCTION(strdup); 1194 INTERCEPT_FUNCTION(__strdup); 1195 INTERCEPT_FUNCTION(strndup); 1196 INTERCEPT_FUNCTION(__strndup); 1197 INTERCEPT_FUNCTION(strncpy); // NOLINT 1198 INTERCEPT_FUNCTION(strlen); 1199 INTERCEPT_FUNCTION(strnlen); 1200 INTERCEPT_FUNCTION(gcvt); 1201 INTERCEPT_FUNCTION(strcat); // NOLINT 1202 INTERCEPT_FUNCTION(strncat); // NOLINT 1203 INTERCEPT_FUNCTION(strtol); 1204 INTERCEPT_FUNCTION(strtoll); 1205 INTERCEPT_FUNCTION(strtoul); 1206 INTERCEPT_FUNCTION(strtoull); 1207 INTERCEPT_FUNCTION(strtod); 1208 INTERCEPT_FUNCTION(strtof); 1209 INTERCEPT_FUNCTION(strtold); 1210 INTERCEPT_FUNCTION(vasprintf); 1211 INTERCEPT_FUNCTION(asprintf); 1212 INTERCEPT_FUNCTION(vsprintf); 1213 INTERCEPT_FUNCTION(vsnprintf); 1214 INTERCEPT_FUNCTION(vswprintf); 1215 INTERCEPT_FUNCTION(sprintf); // NOLINT 1216 INTERCEPT_FUNCTION(snprintf); 1217 INTERCEPT_FUNCTION(swprintf); 1218 INTERCEPT_FUNCTION(strftime); 1219 INTERCEPT_FUNCTION(mbtowc); 1220 INTERCEPT_FUNCTION(mbrtowc); 1221 INTERCEPT_FUNCTION(wcslen); 1222 INTERCEPT_FUNCTION(wcschr); 1223 INTERCEPT_FUNCTION(wcscpy); 1224 INTERCEPT_FUNCTION(wcscmp); 1225 INTERCEPT_FUNCTION(wcstod); 1226 INTERCEPT_FUNCTION(getenv); 1227 INTERCEPT_FUNCTION(setenv); 1228 INTERCEPT_FUNCTION(putenv); 1229 INTERCEPT_FUNCTION(gettimeofday); 1230 INTERCEPT_FUNCTION(fcvt); 1231 INTERCEPT_FUNCTION(__fxstat); 1232 INTERCEPT_FUNCTION(__xstat); 1233 INTERCEPT_FUNCTION(__lxstat); 1234 INTERCEPT_FUNCTION(__fxstat64); 1235 INTERCEPT_FUNCTION(__xstat64); 1236 INTERCEPT_FUNCTION(__lxstat64); 1237 INTERCEPT_FUNCTION(pipe); 1238 INTERCEPT_FUNCTION(pipe2); 1239 INTERCEPT_FUNCTION(socketpair); 1240 INTERCEPT_FUNCTION(fgets); 1241 INTERCEPT_FUNCTION(fgets_unlocked); 1242 INTERCEPT_FUNCTION(getrlimit); 1243 INTERCEPT_FUNCTION(getrlimit64); 1244 INTERCEPT_FUNCTION(statfs); 1245 INTERCEPT_FUNCTION(fstatfs); 1246 INTERCEPT_FUNCTION(statfs64); 1247 INTERCEPT_FUNCTION(fstatfs64); 1248 INTERCEPT_FUNCTION(uname); 1249 INTERCEPT_FUNCTION(gethostname); 1250 INTERCEPT_FUNCTION(epoll_wait); 1251 INTERCEPT_FUNCTION(epoll_pwait); 1252 INTERCEPT_FUNCTION(recv); 1253 INTERCEPT_FUNCTION(recvfrom); 1254 INTERCEPT_FUNCTION(dladdr); 1255 INTERCEPT_FUNCTION(dlopen); 1256 INTERCEPT_FUNCTION(dl_iterate_phdr); 1257 INTERCEPT_FUNCTION(getrusage); 1258 INTERCEPT_FUNCTION(sigaction); 1259 INTERCEPT_FUNCTION(signal); 1260 INTERCEPT_FUNCTION(pthread_create); 1261 INTERCEPT_FUNCTION(pthread_key_create); 1262 INTERCEPT_FUNCTION(pthread_join); 1263 inited = 1; 1264 } 1265 } // namespace __msan 1266
