libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc

   1 //===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // Common function interceptors for tools like AddressSanitizer,
   9 // ThreadSanitizer, MemorySanitizer, etc.
  10 //
  11 // This file should be included into the tool's interceptor file,
  12 // which has to define it's own macros:
  13 //   COMMON_INTERCEPTOR_ENTER
  14 //   COMMON_INTERCEPTOR_READ_RANGE
  15 //   COMMON_INTERCEPTOR_WRITE_RANGE
  16 //   COMMON_INTERCEPTOR_INITIALIZE_RANGE
  17 //   COMMON_INTERCEPTOR_FD_ACQUIRE
  18 //   COMMON_INTERCEPTOR_FD_RELEASE
  19 //   COMMON_INTERCEPTOR_FD_ACCESS
  20 //   COMMON_INTERCEPTOR_SET_THREAD_NAME
  21 //   COMMON_INTERCEPTOR_ON_EXIT
  22 //   COMMON_INTERCEPTOR_MUTEX_LOCK
  23 //   COMMON_INTERCEPTOR_MUTEX_UNLOCK
  24 //   COMMON_INTERCEPTOR_MUTEX_REPAIR
  25 //   COMMON_INTERCEPTOR_SET_PTHREAD_NAME
  26 //   COMMON_INTERCEPTOR_HANDLE_RECVMSG
  27 //===----------------------------------------------------------------------===//
  28 #include "interception/interception.h"
  29 #include "sanitizer_addrhashmap.h"
  30 #include "sanitizer_placement_new.h"
  31 #include "sanitizer_platform_interceptors.h"
  32 #include "sanitizer_tls_get_addr.h"
  33
  34 #include <stdarg.h>
  35
  36 #if SANITIZER_WINDOWS && !defined(va_copy)
  37 #define va_copy(dst, src) ((dst) = (src))
  38 #endif // _WIN32
  39
  40 #ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE
  41 #define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {}
  42 #endif
  43
  44 #ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM
  45 #define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {}
  46 #endif
  47
  48 #ifndef COMMON_INTERCEPTOR_FD_ACCESS
  49 #define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {}
  50 #endif
  51
  52 #ifndef COMMON_INTERCEPTOR_MUTEX_LOCK
  53 #define COMMON_INTERCEPTOR_MUTEX_LOCK(ctx, m) {}
  54 #endif
  55
  56 #ifndef COMMON_INTERCEPTOR_MUTEX_UNLOCK
  57 #define COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m) {}
  58 #endif
  59
  60 #ifndef COMMON_INTERCEPTOR_MUTEX_REPAIR
  61 #define COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m) {}
  62 #endif
  63
  64 #ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG
  65 #define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg))
  66 #endif
  67
  68 #ifndef COMMON_INTERCEPTOR_FILE_OPEN
  69 #define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {}
  70 #endif
  71
  72 #ifndef COMMON_INTERCEPTOR_FILE_CLOSE
  73 #define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {}
  74 #endif
  75
  76 struct FileMetadata {
  77   // For open_memstream().
  78   char **addr;
  79   SIZE_T *size;
  80 };
  81
  82 struct CommonInterceptorMetadata {
  83   enum {
  84     CIMT_INVALID = 0,
  85     CIMT_FILE
  86   } type;
  87   union {
  88     FileMetadata file;
  89   };
  90 };
  91
  92 typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap;
  93
  94 static MetadataHashMap *interceptor_metadata_map;
  95
  96 #if SI_NOT_WINDOWS
  97 UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr,
  98                                           const FileMetadata &file) {
  99   MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr);
 100   CHECK(h.created());
 101   h->type = CommonInterceptorMetadata::CIMT_FILE;
 102   h->file = file;
 103 }
 104
 105 UNUSED static const FileMetadata *GetInterceptorMetadata(
 106     __sanitizer_FILE *addr) {
 107   MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr,
 108                             /* remove */ false,
 109                             /* create */ false);
 110   if (h.exists()) {
 111     CHECK(!h.created());
 112     CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE);
 113     return &h->file;
 114   } else {
 115     return 0;
 116   }
 117 }
 118
 119 UNUSED static void DeleteInterceptorMetadata(void *addr) {
 120   MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true);
 121   CHECK(h.exists());
 122 }
 123 #endif  // SI_NOT_WINDOWS
 124
 125 #if SANITIZER_INTERCEPT_TEXTDOMAIN
 126 INTERCEPTOR(char*, textdomain, const char *domainname) {
 127   void *ctx;
 128   COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname);
 129   char* domain = REAL(textdomain)(domainname);
 130   if (domain) {
 131     COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, REAL(strlen)(domain) + 1);
 132   }
 133   return domain;
 134 }
 135 #define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain)
 136 #else
 137 #define INIT_TEXTDOMAIN
 138 #endif
 139
 140 #if SANITIZER_INTERCEPT_STRCMP
 141 static inline int CharCmpX(unsigned char c1, unsigned char c2) {
 142   return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1;
 143 }
 144
 145 INTERCEPTOR(int, strcmp, const char *s1, const char *s2) {
 146   void *ctx;
 147   COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2);
 148   unsigned char c1, c2;
 149   uptr i;
 150   for (i = 0;; i++) {
 151     c1 = (unsigned char)s1[i];
 152     c2 = (unsigned char)s2[i];
 153     if (c1 != c2 || c1 == '\0') break;
 154   }
 155   COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, i + 1);
 156   COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, i + 1);
 157   return CharCmpX(c1, c2);
 158 }
 159
 160 INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr size) {
 161   void *ctx;
 162   COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size);
 163   unsigned char c1 = 0, c2 = 0;
 164   uptr i;
 165   for (i = 0; i < size; i++) {
 166     c1 = (unsigned char)s1[i];
 167     c2 = (unsigned char)s2[i];
 168     if (c1 != c2 || c1 == '\0') break;
 169   }
 170   COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size));
 171   COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size));
 172   return CharCmpX(c1, c2);
 173 }
 174
 175 #define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp)
 176 #define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp)
 177 #else
 178 #define INIT_STRCMP
 179 #define INIT_STRNCMP
 180 #endif
 181
 182 #if SANITIZER_INTERCEPT_STRCASECMP
 183 static inline int CharCaseCmp(unsigned char c1, unsigned char c2) {
 184   int c1_low = ToLower(c1);
 185   int c2_low = ToLower(c2);
 186   return c1_low - c2_low;
 187 }
 188
 189 INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) {
 190   void *ctx;
 191   COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2);
 192   unsigned char c1 = 0, c2 = 0;
 193   uptr i;
 194   for (i = 0;; i++) {
 195     c1 = (unsigned char)s1[i];
 196     c2 = (unsigned char)s2[i];
 197     if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
 198   }
 199   COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, i + 1);
 200   COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, i + 1);
 201   return CharCaseCmp(c1, c2);
 202 }
 203
 204 INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T n) {
 205   void *ctx;
 206   COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, n);
 207   unsigned char c1 = 0, c2 = 0;
 208   uptr i;
 209   for (i = 0; i < n; i++) {
 210     c1 = (unsigned char)s1[i];
 211     c2 = (unsigned char)s2[i];
 212     if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
 213   }
 214   COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, n));
 215   COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, n));
 216   return CharCaseCmp(c1, c2);
 217 }
 218
 219 #define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp)
 220 #define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp)
 221 #else
 222 #define INIT_STRCASECMP
 223 #define INIT_STRNCASECMP
 224 #endif
 225
 226 #if SANITIZER_INTERCEPT_MEMCHR
 227 INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) {
 228   void *ctx;
 229   COMMON_INTERCEPTOR_ENTER(ctx, memchr, s, c, n);
 230   void *res = REAL(memchr)(s, c, n);
 231   uptr len = res ? (char*)res - (char*)s + 1 : n;
 232   COMMON_INTERCEPTOR_READ_RANGE(ctx, s, len);
 233   return res;
 234 }
 235
 236 #define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr)
 237 #else
 238 #define INIT_MEMCHR
 239 #endif
 240
 241 #if SANITIZER_INTERCEPT_MEMRCHR
 242 INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) {
 243   void *ctx;
 244   COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n);
 245   COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n);
 246   return REAL(memrchr)(s, c, n);
 247 }
 248
 249 #define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr)
 250 #else
 251 #define INIT_MEMRCHR
 252 #endif
 253
 254 #if SANITIZER_INTERCEPT_FREXP
 255 INTERCEPTOR(double, frexp, double x, int *exp) {
 256   void *ctx;
 257   COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp);
 258   double res = REAL(frexp)(x, exp);
 259   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
 260   return res;
 261 }
 262
 263 #define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp);
 264 #else
 265 #define INIT_FREXP
 266 #endif  // SANITIZER_INTERCEPT_FREXP
 267
 268 #if SANITIZER_INTERCEPT_FREXPF_FREXPL
 269 INTERCEPTOR(float, frexpf, float x, int *exp) {
 270   void *ctx;
 271   COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp);
 272   float res = REAL(frexpf)(x, exp);
 273   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
 274   return res;
 275 }
 276
 277 INTERCEPTOR(long double, frexpl, long double x, int *exp) {
 278   void *ctx;
 279   COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp);
 280   long double res = REAL(frexpl)(x, exp);
 281   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
 282   return res;
 283 }
 284
 285 #define INIT_FREXPF_FREXPL           \
 286   COMMON_INTERCEPT_FUNCTION(frexpf); \
 287   COMMON_INTERCEPT_FUNCTION(frexpl)
 288 #else
 289 #define INIT_FREXPF_FREXPL
 290 #endif  // SANITIZER_INTERCEPT_FREXPF_FREXPL
 291
 292 #if SI_NOT_WINDOWS
 293 static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec,
 294                         SIZE_T iovlen, SIZE_T maxlen) {
 295   for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
 296     SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
 297     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz);
 298     maxlen -= sz;
 299   }
 300 }
 301
 302 static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec,
 303                        SIZE_T iovlen, SIZE_T maxlen) {
 304   COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen);
 305   for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
 306     SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
 307     COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz);
 308     maxlen -= sz;
 309   }
 310 }
 311 #endif
 312
 313 #if SANITIZER_INTERCEPT_READ
 314 INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
 315   void *ctx;
 316   COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count);
 317   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 318   SSIZE_T res = REAL(read)(fd, ptr, count);
 319   if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
 320   if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
 321   return res;
 322 }
 323 #define INIT_READ COMMON_INTERCEPT_FUNCTION(read)
 324 #else
 325 #define INIT_READ
 326 #endif
 327
 328 #if SANITIZER_INTERCEPT_PREAD
 329 INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
 330   void *ctx;
 331   COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset);
 332   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 333   SSIZE_T res = REAL(pread)(fd, ptr, count, offset);
 334   if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
 335   if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
 336   return res;
 337 }
 338 #define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread)
 339 #else
 340 #define INIT_PREAD
 341 #endif
 342
 343 #if SANITIZER_INTERCEPT_PREAD64
 344 INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
 345   void *ctx;
 346   COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset);
 347   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 348   SSIZE_T res = REAL(pread64)(fd, ptr, count, offset);
 349   if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res);
 350   if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
 351   return res;
 352 }
 353 #define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64)
 354 #else
 355 #define INIT_PREAD64
 356 #endif
 357
 358 #if SANITIZER_INTERCEPT_READV
 359 INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov,
 360                         int iovcnt) {
 361   void *ctx;
 362   COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt);
 363   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 364   SSIZE_T res = REAL(readv)(fd, iov, iovcnt);
 365   if (res > 0) write_iovec(ctx, iov, iovcnt, res);
 366   if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
 367   return res;
 368 }
 369 #define INIT_READV COMMON_INTERCEPT_FUNCTION(readv)
 370 #else
 371 #define INIT_READV
 372 #endif
 373
 374 #if SANITIZER_INTERCEPT_PREADV
 375 INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt,
 376             OFF_T offset) {
 377   void *ctx;
 378   COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset);
 379   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 380   SSIZE_T res = REAL(preadv)(fd, iov, iovcnt, offset);
 381   if (res > 0) write_iovec(ctx, iov, iovcnt, res);
 382   if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
 383   return res;
 384 }
 385 #define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv)
 386 #else
 387 #define INIT_PREADV
 388 #endif
 389
 390 #if SANITIZER_INTERCEPT_PREADV64
 391 INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt,
 392             OFF64_T offset) {
 393   void *ctx;
 394   COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset);
 395   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 396   SSIZE_T res = REAL(preadv64)(fd, iov, iovcnt, offset);
 397   if (res > 0) write_iovec(ctx, iov, iovcnt, res);
 398   if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
 399   return res;
 400 }
 401 #define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64)
 402 #else
 403 #define INIT_PREADV64
 404 #endif
 405
 406 #if SANITIZER_INTERCEPT_WRITE
 407 INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) {
 408   void *ctx;
 409   COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count);
 410   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 411   if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
 412   SSIZE_T res = REAL(write)(fd, ptr, count);
 413   // FIXME: this check should be _before_ the call to REAL(write), not after
 414   if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
 415   return res;
 416 }
 417 #define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write)
 418 #else
 419 #define INIT_WRITE
 420 #endif
 421
 422 #if SANITIZER_INTERCEPT_PWRITE
 423 INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) {
 424   void *ctx;
 425   COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset);
 426   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 427   if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
 428   SSIZE_T res = REAL(pwrite)(fd, ptr, count, offset);
 429   if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
 430   return res;
 431 }
 432 #define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite)
 433 #else
 434 #define INIT_PWRITE
 435 #endif
 436
 437 #if SANITIZER_INTERCEPT_PWRITE64
 438 INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count,
 439             OFF64_T offset) {
 440   void *ctx;
 441   COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset);
 442   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 443   if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
 444   SSIZE_T res = REAL(pwrite64)(fd, ptr, count, offset);
 445   if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res);
 446   return res;
 447 }
 448 #define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64)
 449 #else
 450 #define INIT_PWRITE64
 451 #endif
 452
 453 #if SANITIZER_INTERCEPT_WRITEV
 454 INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov,
 455                         int iovcnt) {
 456   void *ctx;
 457   COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt);
 458   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 459   if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
 460   SSIZE_T res = REAL(writev)(fd, iov, iovcnt);
 461   if (res > 0) read_iovec(ctx, iov, iovcnt, res);
 462   return res;
 463 }
 464 #define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev)
 465 #else
 466 #define INIT_WRITEV
 467 #endif
 468
 469 #if SANITIZER_INTERCEPT_PWRITEV
 470 INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt,
 471             OFF_T offset) {
 472   void *ctx;
 473   COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset);
 474   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 475   if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
 476   SSIZE_T res = REAL(pwritev)(fd, iov, iovcnt, offset);
 477   if (res > 0) read_iovec(ctx, iov, iovcnt, res);
 478   return res;
 479 }
 480 #define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev)
 481 #else
 482 #define INIT_PWRITEV
 483 #endif
 484
 485 #if SANITIZER_INTERCEPT_PWRITEV64
 486 INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt,
 487             OFF64_T offset) {
 488   void *ctx;
 489   COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset);
 490   COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd);
 491   if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd);
 492   SSIZE_T res = REAL(pwritev64)(fd, iov, iovcnt, offset);
 493   if (res > 0) read_iovec(ctx, iov, iovcnt, res);
 494   return res;
 495 }
 496 #define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64)
 497 #else
 498 #define INIT_PWRITEV64
 499 #endif
 500
 501 #if SANITIZER_INTERCEPT_PRCTL
 502 INTERCEPTOR(int, prctl, int option, unsigned long arg2,
 503             unsigned long arg3,                        // NOLINT
 504             unsigned long arg4, unsigned long arg5) {  // NOLINT
 505   void *ctx;
 506   COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5);
 507   static const int PR_SET_NAME = 15;
 508   int res = REAL(prctl(option, arg2, arg3, arg4, arg5));
 509   if (option == PR_SET_NAME) {
 510     char buff[16];
 511     internal_strncpy(buff, (char *)arg2, 15);
 512     buff[15] = 0;
 513     COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff);
 514   }
 515   return res;
 516 }
 517 #define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl)
 518 #else
 519 #define INIT_PRCTL
 520 #endif  // SANITIZER_INTERCEPT_PRCTL
 521
 522 #if SANITIZER_INTERCEPT_TIME
 523 INTERCEPTOR(unsigned long, time, unsigned long *t) {
 524   void *ctx;
 525   COMMON_INTERCEPTOR_ENTER(ctx, time, t);
 526   unsigned long res = REAL(time)(t);
 527   if (t && res != (unsigned long)-1) {
 528     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t));
 529   }
 530   return res;
 531 }
 532 #define INIT_TIME COMMON_INTERCEPT_FUNCTION(time);
 533 #else
 534 #define INIT_TIME
 535 #endif  // SANITIZER_INTERCEPT_TIME
 536
 537 #if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
 538 static void unpoison_tm(void *ctx, __sanitizer_tm *tm) {
 539   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
 540   if (tm->tm_zone) {
 541     // Can not use COMMON_INTERCEPTOR_WRITE_RANGE here, because tm->tm_zone
 542     // can point to shared memory and tsan would report a data race.
 543     COMMON_INTERCEPTOR_INITIALIZE_RANGE(tm->tm_zone,
 544                                         REAL(strlen(tm->tm_zone)) + 1);
 545   }
 546 }
 547 INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) {
 548   void *ctx;
 549   COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep);
 550   __sanitizer_tm *res = REAL(localtime)(timep);
 551   if (res) {
 552     COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
 553     unpoison_tm(ctx, res);
 554   }
 555   return res;
 556 }
 557 INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) {
 558   void *ctx;
 559   COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result);
 560   __sanitizer_tm *res = REAL(localtime_r)(timep, result);
 561   if (res) {
 562     COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
 563     unpoison_tm(ctx, res);
 564   }
 565   return res;
 566 }
 567 INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) {
 568   void *ctx;
 569   COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep);
 570   __sanitizer_tm *res = REAL(gmtime)(timep);
 571   if (res) {
 572     COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
 573     unpoison_tm(ctx, res);
 574   }
 575   return res;
 576 }
 577 INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) {
 578   void *ctx;
 579   COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result);
 580   __sanitizer_tm *res = REAL(gmtime_r)(timep, result);
 581   if (res) {
 582     COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
 583     unpoison_tm(ctx, res);
 584   }
 585   return res;
 586 }
 587 INTERCEPTOR(char *, ctime, unsigned long *timep) {
 588   void *ctx;
 589   COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep);
 590   char *res = REAL(ctime)(timep);
 591   if (res) {
 592     COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
 593     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
 594   }
 595   return res;
 596 }
 597 INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) {
 598   void *ctx;
 599   COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result);
 600   char *res = REAL(ctime_r)(timep, result);
 601   if (res) {
 602     COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
 603     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
 604   }
 605   return res;
 606 }
 607 INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) {
 608   void *ctx;
 609   COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm);
 610   char *res = REAL(asctime)(tm);
 611   if (res) {
 612     COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
 613     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
 614   }
 615   return res;
 616 }
 617 INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) {
 618   void *ctx;
 619   COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result);
 620   char *res = REAL(asctime_r)(tm, result);
 621   if (res) {
 622     COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
 623     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
 624   }
 625   return res;
 626 }
 627 INTERCEPTOR(long, mktime, __sanitizer_tm *tm) {
 628   void *ctx;
 629   COMMON_INTERCEPTOR_ENTER(ctx, mktime, tm);
 630   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_sec, sizeof(tm->tm_sec));
 631   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_min, sizeof(tm->tm_min));
 632   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_hour, sizeof(tm->tm_hour));
 633   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mday, sizeof(tm->tm_mday));
 634   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mon, sizeof(tm->tm_mon));
 635   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_year, sizeof(tm->tm_year));
 636   COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_isdst, sizeof(tm->tm_isdst));
 637   long res = REAL(mktime)(tm);
 638   if (res != -1) unpoison_tm(ctx, tm);
 639   return res;
 640 }
 641 #define INIT_LOCALTIME_AND_FRIENDS        \
 642   COMMON_INTERCEPT_FUNCTION(localtime);   \
 643   COMMON_INTERCEPT_FUNCTION(localtime_r); \
 644   COMMON_INTERCEPT_FUNCTION(gmtime);      \
 645   COMMON_INTERCEPT_FUNCTION(gmtime_r);    \
 646   COMMON_INTERCEPT_FUNCTION(ctime);       \
 647   COMMON_INTERCEPT_FUNCTION(ctime_r);     \
 648   COMMON_INTERCEPT_FUNCTION(asctime);     \
 649   COMMON_INTERCEPT_FUNCTION(asctime_r);   \
 650   COMMON_INTERCEPT_FUNCTION(mktime);
 651 #else
 652 #define INIT_LOCALTIME_AND_FRIENDS
 653 #endif  // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
 654
 655 #if SANITIZER_INTERCEPT_STRPTIME
 656 INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) {
 657   void *ctx;
 658   COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm);
 659   if (format)
 660     COMMON_INTERCEPTOR_READ_RANGE(ctx, format, REAL(strlen)(format) + 1);
 661   char *res = REAL(strptime)(s, format, tm);
 662   if (res) {
 663     COMMON_INTERCEPTOR_READ_RANGE(ctx, s, res - s);
 664     // Do not call unpoison_tm here, because strptime does not, in fact,
 665     // initialize the entire struct tm. For example, tm_zone pointer is left
 666     // uninitialized.
 667     if (tm) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
 668   }
 669   return res;
 670 }
 671 #define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime);
 672 #else
 673 #define INIT_STRPTIME
 674 #endif
 675
 676 #if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF
 677 #include "sanitizer_common_interceptors_format.inc"
 678
 679 #define FORMAT_INTERCEPTOR_IMPL(name, vname, ...)                              \
 680   {                                                                            \
 681     void *ctx;                                                                 \
 682     va_list ap;                                                                \
 683     va_start(ap, format);                                                      \
 684     COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap);                     \
 685     int res = WRAP(vname)(__VA_ARGS__, ap);                                    \
 686     va_end(ap);                                                                \
 687     return res;                                                                \
 688   }
 689
 690 #endif
 691
 692 #if SANITIZER_INTERCEPT_SCANF
 693
 694 #define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...)                    \
 695   {                                                                            \
 696     void *ctx;                                                                 \
 697     COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__);                         \
 698     va_list aq;                                                                \
 699     va_copy(aq, ap);                                                           \
 700     int res = REAL(vname)(__VA_ARGS__);                                        \
 701     if (res > 0)                                                               \
 702       scanf_common(ctx, res, allowGnuMalloc, format, aq);                      \
 703     va_end(aq);                                                                \
 704     return res;                                                                \
 705   }
 706
 707 INTERCEPTOR(int, vscanf, const char *format, va_list ap)
 708 VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap)
 709
 710 INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap)
 711 VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap)
 712
 713 INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap)
 714 VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap)
 715
 716 #if SANITIZER_INTERCEPT_ISOC99_SCANF
 717 INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap)
 718 VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap)
 719
 720 INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format,
 721             va_list ap)
 722 VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap)
 723
 724 INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap)
 725 VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap)
 726 #endif  // SANITIZER_INTERCEPT_ISOC99_SCANF
 727
 728 INTERCEPTOR(int, scanf, const char *format, ...)
 729 FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format)
 730
 731 INTERCEPTOR(int, fscanf, void *stream, const char *format, ...)
 732 FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format)
 733
 734 INTERCEPTOR(int, sscanf, const char *str, const char *format, ...)
 735 FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format)
 736
 737 #if SANITIZER_INTERCEPT_ISOC99_SCANF
 738 INTERCEPTOR(int, __isoc99_scanf, const char *format, ...)
 739 FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format)
 740
 741 INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...)
 742 FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format)
 743
 744 INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...)
 745 FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format)
 746 #endif
 747
 748 #endif
 749
 750 #if SANITIZER_INTERCEPT_SCANF
 751 #define INIT_SCANF                    \
 752   COMMON_INTERCEPT_FUNCTION(scanf);   \
 753   COMMON_INTERCEPT_FUNCTION(sscanf);  \
 754   COMMON_INTERCEPT_FUNCTION(fscanf);  \
 755   COMMON_INTERCEPT_FUNCTION(vscanf);  \
 756   COMMON_INTERCEPT_FUNCTION(vsscanf); \
 757   COMMON_INTERCEPT_FUNCTION(vfscanf);
 758 #else
 759 #define INIT_SCANF
 760 #endif
 761
 762 #if SANITIZER_INTERCEPT_ISOC99_SCANF
 763 #define INIT_ISOC99_SCANF                      \
 764   COMMON_INTERCEPT_FUNCTION(__isoc99_scanf);   \
 765   COMMON_INTERCEPT_FUNCTION(__isoc99_sscanf);  \
 766   COMMON_INTERCEPT_FUNCTION(__isoc99_fscanf);  \
 767   COMMON_INTERCEPT_FUNCTION(__isoc99_vscanf);  \
 768   COMMON_INTERCEPT_FUNCTION(__isoc99_vsscanf); \
 769   COMMON_INTERCEPT_FUNCTION(__isoc99_vfscanf);
 770 #else
 771 #define INIT_ISOC99_SCANF
 772 #endif
 773
 774 #if SANITIZER_INTERCEPT_PRINTF
 775
 776 #define VPRINTF_INTERCEPTOR_ENTER(vname, ...)                                  \
 777   void *ctx;                                                                   \
 778   COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__);                           \
 779   va_list aq;                                                                  \
 780   va_copy(aq, ap);
 781
 782 #define VPRINTF_INTERCEPTOR_RETURN()                                           \
 783   va_end(aq);
 784
 785 #define VPRINTF_INTERCEPTOR_IMPL(vname, ...)                                   \
 786   {                                                                            \
 787     VPRINTF_INTERCEPTOR_ENTER(vname, __VA_ARGS__);                             \
 788     if (common_flags()->check_printf)                                          \
 789       printf_common(ctx, format, aq);                                          \
 790     int res = REAL(vname)(__VA_ARGS__);                                        \
 791     VPRINTF_INTERCEPTOR_RETURN();                                              \
 792     return res;                                                                \
 793   }
 794
 795 #define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...)                             \
 796   {                                                                            \
 797     VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__)                         \
 798     if (common_flags()->check_printf) {                                        \
 799       printf_common(ctx, format, aq);                                          \
 800     }                                                                          \
 801     int res = REAL(vname)(str, __VA_ARGS__);                                   \
 802     if (res >= 0) {                                                            \
 803       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1);                       \
 804     }                                                                          \
 805     VPRINTF_INTERCEPTOR_RETURN();                                              \
 806     return res;                                                                \
 807   }
 808
 809 #define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...)                      \
 810   {                                                                            \
 811     VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__)                   \
 812     if (common_flags()->check_printf) {                                        \
 813       printf_common(ctx, format, aq);                                          \
 814     }                                                                          \
 815     int res = REAL(vname)(str, size, __VA_ARGS__);                             \
 816     if (res >= 0) {                                                            \
 817       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1)));  \
 818     }                                                                          \
 819     VPRINTF_INTERCEPTOR_RETURN();                                              \
 820     return res;                                                                \
 821   }
 822
 823 #define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...)                           \
 824   {                                                                            \
 825     VPRINTF_INTERCEPTOR_ENTER(vname, strp, __VA_ARGS__)                        \
 826     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, strp, sizeof(char *));                 \
 827     if (common_flags()->check_printf) {                                        \
 828       printf_common(ctx, format, aq);                                          \
 829     }                                                                          \
 830     int res = REAL(vname)(strp, __VA_ARGS__);                                  \
 831     if (res >= 0) {                                                            \
 832       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1);                     \
 833     }                                                                          \
 834     VPRINTF_INTERCEPTOR_RETURN();                                              \
 835     return res;                                                                \
 836   }
 837
 838 INTERCEPTOR(int, vprintf, const char *format, va_list ap)
 839 VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap)
 840
 841 INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format,
 842             va_list ap)
 843 VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap)
 844
 845 INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format,
 846             va_list ap)
 847 VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap)
 848
 849 INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap)
 850 VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap)
 851
 852 INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap)
 853 VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap)
 854
 855 #if SANITIZER_INTERCEPT_ISOC99_PRINTF
 856 INTERCEPTOR(int, __isoc99_vprintf, const char *format, va_list ap)
 857 VPRINTF_INTERCEPTOR_IMPL(__isoc99_vprintf, format, ap)
 858
 859 INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream,
 860             const char *format, va_list ap)
 861 VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap)
 862
 863 INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format,
 864             va_list ap)
 865 VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap)
 866
 867 INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format,
 868             va_list ap)
 869 VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format,
 870                           ap)
 871
 872 #endif  // SANITIZER_INTERCEPT_ISOC99_PRINTF
 873
 874 INTERCEPTOR(int, printf, const char *format, ...)
 875 FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format)
 876
 877 INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...)
 878 FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format)
 879
 880 INTERCEPTOR(int, sprintf, char *str, const char *format, ...) // NOLINT
 881 FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format) // NOLINT
 882
 883 INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...)
 884 FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format)
 885
 886 INTERCEPTOR(int, asprintf, char **strp, const char *format, ...)
 887 FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format)
 888
 889 #if SANITIZER_INTERCEPT_ISOC99_PRINTF
 890 INTERCEPTOR(int, __isoc99_printf, const char *format, ...)
 891 FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format)
 892
 893 INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format,
 894             ...)
 895 FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format)
 896
 897 INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...)
 898 FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format)
 899
 900 INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size,
 901             const char *format, ...)
 902 FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size,
 903                         format)
 904
 905 #endif  // SANITIZER_INTERCEPT_ISOC99_PRINTF
 906
 907 #endif  // SANITIZER_INTERCEPT_PRINTF
 908
 909 #if SANITIZER_INTERCEPT_PRINTF
 910 #define INIT_PRINTF                     \
 911   COMMON_INTERCEPT_FUNCTION(printf);    \
 912   COMMON_INTERCEPT_FUNCTION(sprintf);   \
 913   COMMON_INTERCEPT_FUNCTION(snprintf);  \
 914   COMMON_INTERCEPT_FUNCTION(asprintf);  \
 915   COMMON_INTERCEPT_FUNCTION(fprintf);   \
 916   COMMON_INTERCEPT_FUNCTION(vprintf);   \
 917   COMMON_INTERCEPT_FUNCTION(vsprintf);  \
 918   COMMON_INTERCEPT_FUNCTION(vsnprintf); \
 919   COMMON_INTERCEPT_FUNCTION(vasprintf); \
 920   COMMON_INTERCEPT_FUNCTION(vfprintf);
 921 #else
 922 #define INIT_PRINTF
 923 #endif
 924
 925 #if SANITIZER_INTERCEPT_ISOC99_PRINTF
 926 #define INIT_ISOC99_PRINTF                       \
 927   COMMON_INTERCEPT_FUNCTION(__isoc99_printf);    \
 928   COMMON_INTERCEPT_FUNCTION(__isoc99_sprintf);   \
 929   COMMON_INTERCEPT_FUNCTION(__isoc99_snprintf);  \
 930   COMMON_INTERCEPT_FUNCTION(__isoc99_fprintf);   \
 931   COMMON_INTERCEPT_FUNCTION(__isoc99_vprintf);   \
 932   COMMON_INTERCEPT_FUNCTION(__isoc99_vsprintf);  \
 933   COMMON_INTERCEPT_FUNCTION(__isoc99_vsnprintf); \
 934   COMMON_INTERCEPT_FUNCTION(__isoc99_vfprintf);
 935 #else
 936 #define INIT_ISOC99_PRINTF
 937 #endif
 938
 939 #if SANITIZER_INTERCEPT_IOCTL
 940 #include "sanitizer_common_interceptors_ioctl.inc"
 941 INTERCEPTOR(int, ioctl, int d, unsigned request, void *arg) {
 942   void *ctx;
 943   COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg);
 944
 945   CHECK(ioctl_initialized);
 946
 947   // Note: TSan does not use common flags, and they are zero-initialized.
 948   // This effectively disables ioctl handling in TSan.
 949   if (!common_flags()->handle_ioctl) return REAL(ioctl)(d, request, arg);
 950
 951   const ioctl_desc *desc = ioctl_lookup(request);
 952   ioctl_desc decoded_desc;
 953   if (!desc) {
 954     VPrintf(2, "Decoding unknown ioctl 0x%x\n", request);
 955     if (!ioctl_decode(request, &decoded_desc))
 956       Printf("WARNING: failed decoding unknown ioctl 0x%x\n", request);
 957     else
 958       desc = &decoded_desc;
 959   }
 960
 961   if (desc) ioctl_common_pre(ctx, desc, d, request, arg);
 962   int res = REAL(ioctl)(d, request, arg);
 963   // FIXME: some ioctls have different return values for success and failure.
 964   if (desc && res != -1) ioctl_common_post(ctx, desc, res, d, request, arg);
 965   return res;
 966 }
 967 #define INIT_IOCTL \
 968   ioctl_init();    \
 969   COMMON_INTERCEPT_FUNCTION(ioctl);
 970 #else
 971 #define INIT_IOCTL
 972 #endif
 973
 974 #if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS || \
 975     SANITIZER_INTERCEPT_GETPWENT || SANITIZER_INTERCEPT_FGETPWENT
 976 static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) {
 977   if (pwd) {
 978     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd));
 979     if (pwd->pw_name)
 980       COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_name,
 981                                           REAL(strlen)(pwd->pw_name) + 1);
 982     if (pwd->pw_passwd)
 983       COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_passwd,
 984                                           REAL(strlen)(pwd->pw_passwd) + 1);
 985 #if !SANITIZER_ANDROID
 986     if (pwd->pw_gecos)
 987       COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_gecos,
 988                                           REAL(strlen)(pwd->pw_gecos) + 1);
 989 #endif
 990 #if SANITIZER_MAC
 991     if (pwd->pw_class)
 992       COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_class,
 993                                           REAL(strlen)(pwd->pw_class) + 1);
 994 #endif
 995     if (pwd->pw_dir)
 996       COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_dir,
 997                                           REAL(strlen)(pwd->pw_dir) + 1);
 998     if (pwd->pw_shell)
 999       COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_shell,
1000                                           REAL(strlen)(pwd->pw_shell) + 1);
1001   }
1002 }
1003
1004 static void unpoison_group(void *ctx, __sanitizer_group *grp) {
1005   if (grp) {
1006     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp));
1007     if (grp->gr_name)
1008       COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_name,
1009                                           REAL(strlen)(grp->gr_name) + 1);
1010     if (grp->gr_passwd)
1011       COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_passwd,
1012                                           REAL(strlen)(grp->gr_passwd) + 1);
1013     char **p = grp->gr_mem;
1014     for (; *p; ++p) {
1015       COMMON_INTERCEPTOR_INITIALIZE_RANGE(*p, REAL(strlen)(*p) + 1);
1016     }
1017     COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_mem,
1018                                         (p - grp->gr_mem + 1) * sizeof(*p));
1019   }
1020 }
1021 #endif  // SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS ||
1022         // SANITIZER_INTERCEPT_GETPWENT || SANITIZER_INTERCEPT_FGETPWENT
1023
1024 #if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS
1025 INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) {
1026   void *ctx;
1027   COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name);
1028   COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
1029   __sanitizer_passwd *res = REAL(getpwnam)(name);
1030   if (res != 0) unpoison_passwd(ctx, res);
1031   return res;
1032 }
1033 INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) {
1034   void *ctx;
1035   COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid);
1036   __sanitizer_passwd *res = REAL(getpwuid)(uid);
1037   if (res != 0) unpoison_passwd(ctx, res);
1038   return res;
1039 }
1040 INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) {
1041   void *ctx;
1042   COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name);
1043   COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
1044   __sanitizer_group *res = REAL(getgrnam)(name);
1045   if (res != 0) unpoison_group(ctx, res);
1046   return res;
1047 }
1048 INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) {
1049   void *ctx;
1050   COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid);
1051   __sanitizer_group *res = REAL(getgrgid)(gid);
1052   if (res != 0) unpoison_group(ctx, res);
1053   return res;
1054 }
1055 #define INIT_GETPWNAM_AND_FRIENDS      \
1056   COMMON_INTERCEPT_FUNCTION(getpwnam); \
1057   COMMON_INTERCEPT_FUNCTION(getpwuid); \
1058   COMMON_INTERCEPT_FUNCTION(getgrnam); \
1059   COMMON_INTERCEPT_FUNCTION(getgrgid);
1060 #else
1061 #define INIT_GETPWNAM_AND_FRIENDS
1062 #endif
1063
1064 #if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS
1065 INTERCEPTOR(int, getpwnam_r, const char *name, __sanitizer_passwd *pwd,
1066             char *buf, SIZE_T buflen, __sanitizer_passwd **result) {
1067   void *ctx;
1068   COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result);
1069   COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
1070   int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result);
1071   if (!res) {
1072     if (result && *result) unpoison_passwd(ctx, *result);
1073     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1074   }
1075   if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1076   return res;
1077 }
1078 INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf,
1079             SIZE_T buflen, __sanitizer_passwd **result) {
1080   void *ctx;
1081   COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result);
1082   int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result);
1083   if (!res) {
1084     if (result && *result) unpoison_passwd(ctx, *result);
1085     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1086   }
1087   if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1088   return res;
1089 }
1090 INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp,
1091             char *buf, SIZE_T buflen, __sanitizer_group **result) {
1092   void *ctx;
1093   COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result);
1094   COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
1095   int res = REAL(getgrnam_r)(name, grp, buf, buflen, result);
1096   if (!res) {
1097     if (result && *result) unpoison_group(ctx, *result);
1098     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1099   }
1100   if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1101   return res;
1102 }
1103 INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf,
1104             SIZE_T buflen, __sanitizer_group **result) {
1105   void *ctx;
1106   COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result);
1107   int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result);
1108   if (!res) {
1109     if (result && *result) unpoison_group(ctx, *result);
1110     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1111   }
1112   if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1113   return res;
1114 }
1115 #define INIT_GETPWNAM_R_AND_FRIENDS      \
1116   COMMON_INTERCEPT_FUNCTION(getpwnam_r); \
1117   COMMON_INTERCEPT_FUNCTION(getpwuid_r); \
1118   COMMON_INTERCEPT_FUNCTION(getgrnam_r); \
1119   COMMON_INTERCEPT_FUNCTION(getgrgid_r);
1120 #else
1121 #define INIT_GETPWNAM_R_AND_FRIENDS
1122 #endif
1123
1124 #if SANITIZER_INTERCEPT_GETPWENT
1125 INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) {
1126   void *ctx;
1127   COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy);
1128   __sanitizer_passwd *res = REAL(getpwent)(dummy);
1129   if (res != 0) unpoison_passwd(ctx, res);
1130   return res;
1131 }
1132 INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) {
1133   void *ctx;
1134   COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy);
1135   __sanitizer_group *res = REAL(getgrent)(dummy);
1136   if (res != 0) unpoison_group(ctx, res);;
1137   return res;
1138 }
1139 #define INIT_GETPWENT                  \
1140   COMMON_INTERCEPT_FUNCTION(getpwent); \
1141   COMMON_INTERCEPT_FUNCTION(getgrent);
1142 #else
1143 #define INIT_GETPWENT
1144 #endif
1145
1146 #if SANITIZER_INTERCEPT_FGETPWENT
1147 INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) {
1148   void *ctx;
1149   COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp);
1150   __sanitizer_passwd *res = REAL(fgetpwent)(fp);
1151   if (res != 0) unpoison_passwd(ctx, res);
1152   return res;
1153 }
1154 INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) {
1155   void *ctx;
1156   COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp);
1157   __sanitizer_group *res = REAL(fgetgrent)(fp);
1158   if (res != 0) unpoison_group(ctx, res);
1159   return res;
1160 }
1161 #define INIT_FGETPWENT                  \
1162   COMMON_INTERCEPT_FUNCTION(fgetpwent); \
1163   COMMON_INTERCEPT_FUNCTION(fgetgrent);
1164 #else
1165 #define INIT_FGETPWENT
1166 #endif
1167
1168 #if SANITIZER_INTERCEPT_GETPWENT_R
1169 INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf,
1170             SIZE_T buflen, __sanitizer_passwd **pwbufp) {
1171   void *ctx;
1172   COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp);
1173   int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp);
1174   if (!res) {
1175     if (pwbufp && *pwbufp) unpoison_passwd(ctx, *pwbufp);
1176     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1177   }
1178   if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1179   return res;
1180 }
1181 INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf,
1182             SIZE_T buflen, __sanitizer_passwd **pwbufp) {
1183   void *ctx;
1184   COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp);
1185   int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp);
1186   if (!res) {
1187     if (pwbufp && *pwbufp) unpoison_passwd(ctx, *pwbufp);
1188     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1189   }
1190   if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1191   return res;
1192 }
1193 INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen,
1194             __sanitizer_group **pwbufp) {
1195   void *ctx;
1196   COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp);
1197   int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp);
1198   if (!res) {
1199     if (pwbufp && *pwbufp) unpoison_group(ctx, *pwbufp);
1200     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1201   }
1202   if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1203   return res;
1204 }
1205 INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf,
1206             SIZE_T buflen, __sanitizer_group **pwbufp) {
1207   void *ctx;
1208   COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp);
1209   int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp);
1210   if (!res) {
1211     if (pwbufp && *pwbufp) unpoison_group(ctx, *pwbufp);
1212     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1213   }
1214   if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1215   return res;
1216 }
1217 #define INIT_GETPWENT_R                   \
1218   COMMON_INTERCEPT_FUNCTION(getpwent_r);  \
1219   COMMON_INTERCEPT_FUNCTION(fgetpwent_r); \
1220   COMMON_INTERCEPT_FUNCTION(getgrent_r);  \
1221   COMMON_INTERCEPT_FUNCTION(fgetgrent_r);
1222 #else
1223 #define INIT_GETPWENT_R
1224 #endif
1225
1226 #if SANITIZER_INTERCEPT_SETPWENT
1227 // The only thing these interceptors do is disable any nested interceptors.
1228 // These functions may open nss modules and call uninstrumented functions from
1229 // them, and we don't want things like strlen() to trigger.
1230 INTERCEPTOR(void, setpwent, int dummy) {
1231   void *ctx;
1232   COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy);
1233   REAL(setpwent)(dummy);
1234 }
1235 INTERCEPTOR(void, endpwent, int dummy) {
1236   void *ctx;
1237   COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy);
1238   REAL(endpwent)(dummy);
1239 }
1240 INTERCEPTOR(void, setgrent, int dummy) {
1241   void *ctx;
1242   COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy);
1243   REAL(setgrent)(dummy);
1244 }
1245 INTERCEPTOR(void, endgrent, int dummy) {
1246   void *ctx;
1247   COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy);
1248   REAL(endgrent)(dummy);
1249 }
1250 #define INIT_SETPWENT                  \
1251   COMMON_INTERCEPT_FUNCTION(setpwent); \
1252   COMMON_INTERCEPT_FUNCTION(endpwent); \
1253   COMMON_INTERCEPT_FUNCTION(setgrent); \
1254   COMMON_INTERCEPT_FUNCTION(endgrent);
1255 #else
1256 #define INIT_SETPWENT
1257 #endif
1258
1259 #if SANITIZER_INTERCEPT_CLOCK_GETTIME
1260 INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) {
1261   void *ctx;
1262   COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp);
1263   int res = REAL(clock_getres)(clk_id, tp);
1264   if (!res && tp) {
1265     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
1266   }
1267   return res;
1268 }
1269 INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) {
1270   void *ctx;
1271   COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp);
1272   int res = REAL(clock_gettime)(clk_id, tp);
1273   if (!res) {
1274     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
1275   }
1276   return res;
1277 }
1278 INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) {
1279   void *ctx;
1280   COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp);
1281   COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz);
1282   return REAL(clock_settime)(clk_id, tp);
1283 }
1284 #define INIT_CLOCK_GETTIME                  \
1285   COMMON_INTERCEPT_FUNCTION(clock_getres);  \
1286   COMMON_INTERCEPT_FUNCTION(clock_gettime); \
1287   COMMON_INTERCEPT_FUNCTION(clock_settime);
1288 #else
1289 #define INIT_CLOCK_GETTIME
1290 #endif
1291
1292 #if SANITIZER_INTERCEPT_GETITIMER
1293 INTERCEPTOR(int, getitimer, int which, void *curr_value) {
1294   void *ctx;
1295   COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value);
1296   int res = REAL(getitimer)(which, curr_value);
1297   if (!res && curr_value) {
1298     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz);
1299   }
1300   return res;
1301 }
1302 INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) {
1303   void *ctx;
1304   COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value);
1305   if (new_value)
1306     COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerval_sz);
1307   int res = REAL(setitimer)(which, new_value, old_value);
1308   if (!res && old_value) {
1309     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz);
1310   }
1311   return res;
1312 }
1313 #define INIT_GETITIMER                  \
1314   COMMON_INTERCEPT_FUNCTION(getitimer); \
1315   COMMON_INTERCEPT_FUNCTION(setitimer);
1316 #else
1317 #define INIT_GETITIMER
1318 #endif
1319
1320 #if SANITIZER_INTERCEPT_GLOB
1321 static void unpoison_glob_t(void *ctx, __sanitizer_glob_t *pglob) {
1322   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob));
1323   // +1 for NULL pointer at the end.
1324   if (pglob->gl_pathv)
1325     COMMON_INTERCEPTOR_WRITE_RANGE(
1326         ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv));
1327   for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) {
1328     char *p = pglob->gl_pathv[i];
1329     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, REAL(strlen)(p) + 1);
1330   }
1331 }
1332
1333 static THREADLOCAL __sanitizer_glob_t *pglob_copy;
1334
1335 static void wrapped_gl_closedir(void *dir) {
1336   COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
1337   IndirectExternCall(pglob_copy->gl_closedir)(dir);
1338 }
1339
1340 static void *wrapped_gl_readdir(void *dir) {
1341   COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
1342   return IndirectExternCall(pglob_copy->gl_readdir)(dir);
1343 }
1344
1345 static void *wrapped_gl_opendir(const char *s) {
1346   COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
1347   COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, REAL(strlen)(s) + 1);
1348   return IndirectExternCall(pglob_copy->gl_opendir)(s);
1349 }
1350
1351 static int wrapped_gl_lstat(const char *s, void *st) {
1352   COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
1353   COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, REAL(strlen)(s) + 1);
1354   return IndirectExternCall(pglob_copy->gl_lstat)(s, st);
1355 }
1356
1357 static int wrapped_gl_stat(const char *s, void *st) {
1358   COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
1359   COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, REAL(strlen)(s) + 1);
1360   return IndirectExternCall(pglob_copy->gl_stat)(s, st);
1361 }
1362
1363 INTERCEPTOR(int, glob, const char *pattern, int flags,
1364             int (*errfunc)(const char *epath, int eerrno),
1365             __sanitizer_glob_t *pglob) {
1366   void *ctx;
1367   COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
1368   __sanitizer_glob_t glob_copy = {
1369       0,                  0,                   0,
1370       0,                  wrapped_gl_closedir, wrapped_gl_readdir,
1371       wrapped_gl_opendir, wrapped_gl_lstat,    wrapped_gl_stat};
1372   if (flags & glob_altdirfunc) {
1373     Swap(pglob->gl_closedir, glob_copy.gl_closedir);
1374     Swap(pglob->gl_readdir, glob_copy.gl_readdir);
1375     Swap(pglob->gl_opendir, glob_copy.gl_opendir);
1376     Swap(pglob->gl_lstat, glob_copy.gl_lstat);
1377     Swap(pglob->gl_stat, glob_copy.gl_stat);
1378     pglob_copy = &glob_copy;
1379   }
1380   int res = REAL(glob)(pattern, flags, errfunc, pglob);
1381   if (flags & glob_altdirfunc) {
1382     Swap(pglob->gl_closedir, glob_copy.gl_closedir);
1383     Swap(pglob->gl_readdir, glob_copy.gl_readdir);
1384     Swap(pglob->gl_opendir, glob_copy.gl_opendir);
1385     Swap(pglob->gl_lstat, glob_copy.gl_lstat);
1386     Swap(pglob->gl_stat, glob_copy.gl_stat);
1387   }
1388   pglob_copy = 0;
1389   if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
1390   return res;
1391 }
1392
1393 INTERCEPTOR(int, glob64, const char *pattern, int flags,
1394             int (*errfunc)(const char *epath, int eerrno),
1395             __sanitizer_glob_t *pglob) {
1396   void *ctx;
1397   COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob);
1398   __sanitizer_glob_t glob_copy = {
1399       0,                  0,                   0,
1400       0,                  wrapped_gl_closedir, wrapped_gl_readdir,
1401       wrapped_gl_opendir, wrapped_gl_lstat,    wrapped_gl_stat};
1402   if (flags & glob_altdirfunc) {
1403     Swap(pglob->gl_closedir, glob_copy.gl_closedir);
1404     Swap(pglob->gl_readdir, glob_copy.gl_readdir);
1405     Swap(pglob->gl_opendir, glob_copy.gl_opendir);
1406     Swap(pglob->gl_lstat, glob_copy.gl_lstat);
1407     Swap(pglob->gl_stat, glob_copy.gl_stat);
1408     pglob_copy = &glob_copy;
1409   }
1410   int res = REAL(glob64)(pattern, flags, errfunc, pglob);
1411   if (flags & glob_altdirfunc) {
1412     Swap(pglob->gl_closedir, glob_copy.gl_closedir);
1413     Swap(pglob->gl_readdir, glob_copy.gl_readdir);
1414     Swap(pglob->gl_opendir, glob_copy.gl_opendir);
1415     Swap(pglob->gl_lstat, glob_copy.gl_lstat);
1416     Swap(pglob->gl_stat, glob_copy.gl_stat);
1417   }
1418   pglob_copy = 0;
1419   if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
1420   return res;
1421 }
1422 #define INIT_GLOB                  \
1423   COMMON_INTERCEPT_FUNCTION(glob); \
1424   COMMON_INTERCEPT_FUNCTION(glob64);
1425 #else  // SANITIZER_INTERCEPT_GLOB
1426 #define INIT_GLOB
1427 #endif  // SANITIZER_INTERCEPT_GLOB
1428
1429 #if SANITIZER_INTERCEPT_WAIT
1430 // According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version
1431 // suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for
1432 // details.
1433 INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) {
1434   void *ctx;
1435   COMMON_INTERCEPTOR_ENTER(ctx, wait, status);
1436   int res = REAL(wait)(status);
1437   if (res != -1 && status)
1438     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1439   return res;
1440 }
1441 INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop,
1442                         int options) {
1443   void *ctx;
1444   COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options);
1445   int res = REAL(waitid)(idtype, id, infop, options);
1446   if (res != -1 && infop)
1447     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz);
1448   return res;
1449 }
1450 INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) {
1451   void *ctx;
1452   COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options);
1453   int res = REAL(waitpid)(pid, status, options);
1454   if (res != -1 && status)
1455     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1456   return res;
1457 }
1458 INTERCEPTOR(int, wait3, int *status, int options, void *rusage) {
1459   void *ctx;
1460   COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage);
1461   int res = REAL(wait3)(status, options, rusage);
1462   if (res != -1) {
1463     if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1464     if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
1465   }
1466   return res;
1467 }
1468 #if SANITIZER_ANDROID
1469 INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) {
1470   void *ctx;
1471   COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage);
1472   int res = REAL(__wait4)(pid, status, options, rusage);
1473   if (res != -1) {
1474     if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1475     if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
1476   }
1477   return res;
1478 }
1479 #define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4);
1480 #else
1481 INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) {
1482   void *ctx;
1483   COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage);
1484   int res = REAL(wait4)(pid, status, options, rusage);
1485   if (res != -1) {
1486     if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1487     if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
1488   }
1489   return res;
1490 }
1491 #define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4);
1492 #endif  // SANITIZER_ANDROID
1493 #define INIT_WAIT                     \
1494   COMMON_INTERCEPT_FUNCTION(wait);    \
1495   COMMON_INTERCEPT_FUNCTION(waitid);  \
1496   COMMON_INTERCEPT_FUNCTION(waitpid); \
1497   COMMON_INTERCEPT_FUNCTION(wait3);
1498 #else
1499 #define INIT_WAIT
1500 #define INIT_WAIT4
1501 #endif
1502
1503 #if SANITIZER_INTERCEPT_INET
1504 INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) {
1505   void *ctx;
1506   COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size);
1507   uptr sz = __sanitizer_in_addr_sz(af);
1508   if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz);
1509   // FIXME: figure out read size based on the address family.
1510   char *res = REAL(inet_ntop)(af, src, dst, size);
1511   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
1512   return res;
1513 }
1514 INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) {
1515   void *ctx;
1516   COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst);
1517   // FIXME: figure out read size based on the address family.
1518   int res = REAL(inet_pton)(af, src, dst);
1519   if (res == 1) {
1520     uptr sz = __sanitizer_in_addr_sz(af);
1521     if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
1522   }
1523   return res;
1524 }
1525 #define INIT_INET                       \
1526   COMMON_INTERCEPT_FUNCTION(inet_ntop); \
1527   COMMON_INTERCEPT_FUNCTION(inet_pton);
1528 #else
1529 #define INIT_INET
1530 #endif
1531
1532 #if SANITIZER_INTERCEPT_INET
1533 INTERCEPTOR(int, inet_aton, const char *cp, void *dst) {
1534   void *ctx;
1535   COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst);
1536   if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, REAL(strlen)(cp) + 1);
1537   int res = REAL(inet_aton)(cp, dst);
1538   if (res != 0) {
1539     uptr sz = __sanitizer_in_addr_sz(af_inet);
1540     if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
1541   }
1542   return res;
1543 }
1544 #define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton);
1545 #else
1546 #define INIT_INET_ATON
1547 #endif
1548
1549 #if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM
1550 INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) {
1551   void *ctx;
1552   COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param);
1553   int res = REAL(pthread_getschedparam)(thread, policy, param);
1554   if (res == 0) {
1555     if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy));
1556     if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param));
1557   }
1558   return res;
1559 }
1560 #define INIT_PTHREAD_GETSCHEDPARAM \
1561   COMMON_INTERCEPT_FUNCTION(pthread_getschedparam);
1562 #else
1563 #define INIT_PTHREAD_GETSCHEDPARAM
1564 #endif
1565
1566 #if SANITIZER_INTERCEPT_GETADDRINFO
1567 INTERCEPTOR(int, getaddrinfo, char *node, char *service,
1568             struct __sanitizer_addrinfo *hints,
1569             struct __sanitizer_addrinfo **out) {
1570   void *ctx;
1571   COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out);
1572   if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, REAL(strlen)(node) + 1);
1573   if (service)
1574     COMMON_INTERCEPTOR_READ_RANGE(ctx, service, REAL(strlen)(service) + 1);
1575   if (hints)
1576     COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo));
1577   int res = REAL(getaddrinfo)(node, service, hints, out);
1578   if (res == 0 && out) {
1579     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out));
1580     struct __sanitizer_addrinfo *p = *out;
1581     while (p) {
1582       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
1583       if (p->ai_addr)
1584         COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen);
1585       if (p->ai_canonname)
1586         COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname,
1587                                        REAL(strlen)(p->ai_canonname) + 1);
1588       p = p->ai_next;
1589     }
1590   }
1591   return res;
1592 }
1593 #define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo);
1594 #else
1595 #define INIT_GETADDRINFO
1596 #endif
1597
1598 #if SANITIZER_INTERCEPT_GETNAMEINFO
1599 INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host,
1600             unsigned hostlen, char *serv, unsigned servlen, int flags) {
1601   void *ctx;
1602   COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen,
1603                            serv, servlen, flags);
1604   // FIXME: consider adding READ_RANGE(sockaddr, salen)
1605   // There is padding in in_addr that may make this too noisy
1606   int res =
1607       REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags);
1608   if (res == 0) {
1609     if (host && hostlen)
1610       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, REAL(strlen)(host) + 1);
1611     if (serv && servlen)
1612       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, REAL(strlen)(serv) + 1);
1613   }
1614   return res;
1615 }
1616 #define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo);
1617 #else
1618 #define INIT_GETNAMEINFO
1619 #endif
1620
1621 #if SANITIZER_INTERCEPT_GETSOCKNAME
1622 INTERCEPTOR(int, getsockname, int sock_fd, void *addr, int *addrlen) {
1623   void *ctx;
1624   COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen);
1625   COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
1626   int addrlen_in = *addrlen;
1627   int res = REAL(getsockname)(sock_fd, addr, addrlen);
1628   if (res == 0) {
1629     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addrlen_in, *addrlen));
1630   }
1631   return res;
1632 }
1633 #define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname);
1634 #else
1635 #define INIT_GETSOCKNAME
1636 #endif
1637
1638 #if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R
1639 static void write_hostent(void *ctx, struct __sanitizer_hostent *h) {
1640   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent));
1641   if (h->h_name)
1642     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, REAL(strlen)(h->h_name) + 1);
1643   char **p = h->h_aliases;
1644   while (*p) {
1645     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1);
1646     ++p;
1647   }
1648   COMMON_INTERCEPTOR_WRITE_RANGE(
1649       ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases));
1650   p = h->h_addr_list;
1651   while (*p) {
1652     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length);
1653     ++p;
1654   }
1655   COMMON_INTERCEPTOR_WRITE_RANGE(
1656       ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list));
1657 }
1658 #endif
1659
1660 #if SANITIZER_INTERCEPT_GETHOSTBYNAME
1661 INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) {
1662   void *ctx;
1663   COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name);
1664   struct __sanitizer_hostent *res = REAL(gethostbyname)(name);
1665   if (res) write_hostent(ctx, res);
1666   return res;
1667 }
1668
1669 INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len,
1670             int type) {
1671   void *ctx;
1672   COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type);
1673   COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
1674   struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type);
1675   if (res) write_hostent(ctx, res);
1676   return res;
1677 }
1678
1679 INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) {
1680   void *ctx;
1681   COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake);
1682   struct __sanitizer_hostent *res = REAL(gethostent)(fake);
1683   if (res) write_hostent(ctx, res);
1684   return res;
1685 }
1686
1687 INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) {
1688   void *ctx;
1689   COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af);
1690   struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af);
1691   if (res) write_hostent(ctx, res);
1692   return res;
1693 }
1694 #define INIT_GETHOSTBYNAME                  \
1695   COMMON_INTERCEPT_FUNCTION(gethostent);    \
1696   COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \
1697   COMMON_INTERCEPT_FUNCTION(gethostbyname); \
1698   COMMON_INTERCEPT_FUNCTION(gethostbyname2);
1699 #else
1700 #define INIT_GETHOSTBYNAME
1701 #endif
1702
1703 #if SANITIZER_INTERCEPT_GETHOSTBYNAME_R
1704 INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf,
1705             SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) {
1706   void *ctx;
1707   COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result,
1708                            h_errnop);
1709   int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop);
1710   if (result) {
1711     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1712     if (res == 0 && *result) write_hostent(ctx, *result);
1713   }
1714   if (h_errnop)
1715     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
1716   return res;
1717 }
1718
1719 INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type,
1720             struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
1721             __sanitizer_hostent **result, int *h_errnop) {
1722   void *ctx;
1723   COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf,
1724                            buflen, result, h_errnop);
1725   COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len);
1726   int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result,
1727                                   h_errnop);
1728   if (result) {
1729     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1730     if (res == 0 && *result) write_hostent(ctx, *result);
1731   }
1732   if (h_errnop)
1733     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
1734   return res;
1735 }
1736
1737 INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret,
1738             char *buf, SIZE_T buflen, __sanitizer_hostent **result,
1739             int *h_errnop) {
1740   void *ctx;
1741   COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result,
1742                            h_errnop);
1743   int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop);
1744   if (result) {
1745     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1746     if (res == 0 && *result) write_hostent(ctx, *result);
1747   }
1748   if (h_errnop)
1749     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
1750   return res;
1751 }
1752
1753 INTERCEPTOR(int, gethostbyname2_r, char *name, int af,
1754             struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen,
1755             __sanitizer_hostent **result, int *h_errnop) {
1756   void *ctx;
1757   COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen,
1758                            result, h_errnop);
1759   int res =
1760       REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop);
1761   if (result) {
1762     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1763     if (res == 0 && *result) write_hostent(ctx, *result);
1764   }
1765   if (h_errnop)
1766     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
1767   return res;
1768 }
1769 #define INIT_GETHOSTBYNAME_R                  \
1770   COMMON_INTERCEPT_FUNCTION(gethostent_r);    \
1771   COMMON_INTERCEPT_FUNCTION(gethostbyaddr_r); \
1772   COMMON_INTERCEPT_FUNCTION(gethostbyname_r); \
1773   COMMON_INTERCEPT_FUNCTION(gethostbyname2_r);
1774 #else
1775 #define INIT_GETHOSTBYNAME_R
1776 #endif
1777
1778 #if SANITIZER_INTERCEPT_GETSOCKOPT
1779 INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval,
1780             int *optlen) {
1781   void *ctx;
1782   COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval,
1783                            optlen);
1784   if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen));
1785   int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen);
1786   if (res == 0)
1787     if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen);
1788   return res;
1789 }
1790 #define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt);
1791 #else
1792 #define INIT_GETSOCKOPT
1793 #endif
1794
1795 #if SANITIZER_INTERCEPT_ACCEPT
1796 INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) {
1797   void *ctx;
1798   COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen);
1799   unsigned addrlen0 = 0;
1800   if (addrlen) {
1801     COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
1802     addrlen0 = *addrlen;
1803   }
1804   int fd2 = REAL(accept)(fd, addr, addrlen);
1805   if (fd2 >= 0) {
1806     if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
1807     if (addr && addrlen)
1808       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
1809   }
1810   return fd2;
1811 }
1812 #define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept);
1813 #else
1814 #define INIT_ACCEPT
1815 #endif
1816
1817 #if SANITIZER_INTERCEPT_ACCEPT4
1818 INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) {
1819   void *ctx;
1820   COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f);
1821   unsigned addrlen0 = 0;
1822   if (addrlen) {
1823     COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
1824     addrlen0 = *addrlen;
1825   }
1826   int fd2 = REAL(accept4)(fd, addr, addrlen, f);
1827   if (fd2 >= 0) {
1828     if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2);
1829     if (addr && addrlen)
1830       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0));
1831   }
1832   return fd2;
1833 }
1834 #define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4);
1835 #else
1836 #define INIT_ACCEPT4
1837 #endif
1838
1839 #if SANITIZER_INTERCEPT_MODF
1840 INTERCEPTOR(double, modf, double x, double *iptr) {
1841   void *ctx;
1842   COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr);
1843   double res = REAL(modf)(x, iptr);
1844   if (iptr) {
1845     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
1846   }
1847   return res;
1848 }
1849 INTERCEPTOR(float, modff, float x, float *iptr) {
1850   void *ctx;
1851   COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr);
1852   float res = REAL(modff)(x, iptr);
1853   if (iptr) {
1854     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
1855   }
1856   return res;
1857 }
1858 INTERCEPTOR(long double, modfl, long double x, long double *iptr) {
1859   void *ctx;
1860   COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr);
1861   long double res = REAL(modfl)(x, iptr);
1862   if (iptr) {
1863     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
1864   }
1865   return res;
1866 }
1867 #define INIT_MODF                   \
1868   COMMON_INTERCEPT_FUNCTION(modf);  \
1869   COMMON_INTERCEPT_FUNCTION(modff); \
1870   COMMON_INTERCEPT_FUNCTION(modfl);
1871 #else
1872 #define INIT_MODF
1873 #endif
1874
1875 #if SANITIZER_INTERCEPT_RECVMSG
1876 static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
1877                          SSIZE_T maxlen) {
1878   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg));
1879   if (msg->msg_name && msg->msg_namelen)
1880     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name, msg->msg_namelen);
1881   if (msg->msg_iov && msg->msg_iovlen)
1882     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov,
1883                                    sizeof(*msg->msg_iov) * msg->msg_iovlen);
1884   write_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen);
1885   if (msg->msg_control && msg->msg_controllen)
1886     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen);
1887 }
1888
1889 INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg,
1890             int flags) {
1891   void *ctx;
1892   COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags);
1893   SSIZE_T res = REAL(recvmsg)(fd, msg, flags);
1894   if (res >= 0) {
1895     if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1896     if (msg) {
1897       write_msghdr(ctx, msg, res);
1898       COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg);
1899     }
1900   }
1901   return res;
1902 }
1903 #define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg);
1904 #else
1905 #define INIT_RECVMSG
1906 #endif
1907
1908 #if SANITIZER_INTERCEPT_GETPEERNAME
1909 INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) {
1910   void *ctx;
1911   COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen);
1912   unsigned addr_sz;
1913   if (addrlen) addr_sz = *addrlen;
1914   int res = REAL(getpeername)(sockfd, addr, addrlen);
1915   if (!res && addr && addrlen)
1916     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen));
1917   return res;
1918 }
1919 #define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername);
1920 #else
1921 #define INIT_GETPEERNAME
1922 #endif
1923
1924 #if SANITIZER_INTERCEPT_SYSINFO
1925 INTERCEPTOR(int, sysinfo, void *info) {
1926   void *ctx;
1927   COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info);
1928   int res = REAL(sysinfo)(info);
1929   if (!res && info)
1930     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz);
1931   return res;
1932 }
1933 #define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo);
1934 #else
1935 #define INIT_SYSINFO
1936 #endif
1937
1938 #if SANITIZER_INTERCEPT_READDIR
1939 INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) {
1940   void *ctx;
1941   COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp);
1942   __sanitizer_dirent *res = REAL(readdir)(dirp);
1943   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen);
1944   return res;
1945 }
1946
1947 INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry,
1948             __sanitizer_dirent **result) {
1949   void *ctx;
1950   COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result);
1951   int res = REAL(readdir_r)(dirp, entry, result);
1952   if (!res) {
1953     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1954     if (*result)
1955       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen);
1956   }
1957   return res;
1958 }
1959
1960 #define INIT_READDIR                  \
1961   COMMON_INTERCEPT_FUNCTION(readdir); \
1962   COMMON_INTERCEPT_FUNCTION(readdir_r);
1963 #else
1964 #define INIT_READDIR
1965 #endif
1966
1967 #if SANITIZER_INTERCEPT_READDIR64
1968 INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) {
1969   void *ctx;
1970   COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp);
1971   __sanitizer_dirent64 *res = REAL(readdir64)(dirp);
1972   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, res->d_reclen);
1973   return res;
1974 }
1975
1976 INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry,
1977             __sanitizer_dirent64 **result) {
1978   void *ctx;
1979   COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result);
1980   int res = REAL(readdir64_r)(dirp, entry, result);
1981   if (!res) {
1982     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1983     if (*result)
1984       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen);
1985   }
1986   return res;
1987 }
1988 #define INIT_READDIR64                  \
1989   COMMON_INTERCEPT_FUNCTION(readdir64); \
1990   COMMON_INTERCEPT_FUNCTION(readdir64_r);
1991 #else
1992 #define INIT_READDIR64
1993 #endif
1994
1995 #if SANITIZER_INTERCEPT_PTRACE
1996 INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
1997   void *ctx;
1998   COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data);
1999
2000   if (data) {
2001     if (request == ptrace_setregs)
2002       COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_regs_struct_sz);
2003     else if (request == ptrace_setfpregs)
2004       COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpregs_struct_sz);
2005     else if (request == ptrace_setfpxregs)
2006       COMMON_INTERCEPTOR_READ_RANGE(ctx, data, struct_user_fpxregs_struct_sz);
2007     else if (request == ptrace_setsiginfo)
2008       COMMON_INTERCEPTOR_READ_RANGE(ctx, data, siginfo_t_sz);
2009     else if (request == ptrace_setregset) {
2010       __sanitizer_iovec *iov = (__sanitizer_iovec *)data;
2011       COMMON_INTERCEPTOR_READ_RANGE(ctx, iov->iov_base, iov->iov_len);
2012     }
2013   }
2014
2015   uptr res = REAL(ptrace)(request, pid, addr, data);
2016
2017   if (!res && data) {
2018     // Note that PEEK* requests assing different meaning to the return value.
2019     // This function does not handle them (nor does it need to).
2020     if (request == ptrace_getregs)
2021       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_regs_struct_sz);
2022     else if (request == ptrace_getfpregs)
2023       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpregs_struct_sz);
2024     else if (request == ptrace_getfpxregs)
2025       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, struct_user_fpxregs_struct_sz);
2026     else if (request == ptrace_getsiginfo)
2027       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, siginfo_t_sz);
2028     else if (request == ptrace_getregset) {
2029       __sanitizer_iovec *iov = (__sanitizer_iovec *)data;
2030       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iov->iov_base, iov->iov_len);
2031     }
2032   }
2033   return res;
2034 }
2035
2036 #define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace);
2037 #else
2038 #define INIT_PTRACE
2039 #endif
2040
2041 #if SANITIZER_INTERCEPT_SETLOCALE
2042 INTERCEPTOR(char *, setlocale, int category, char *locale) {
2043   void *ctx;
2044   COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale);
2045   if (locale)
2046     COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, REAL(strlen)(locale) + 1);
2047   char *res = REAL(setlocale)(category, locale);
2048   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2049   return res;
2050 }
2051
2052 #define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale);
2053 #else
2054 #define INIT_SETLOCALE
2055 #endif
2056
2057 #if SANITIZER_INTERCEPT_GETCWD
2058 INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) {
2059   void *ctx;
2060   COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size);
2061   char *res = REAL(getcwd)(buf, size);
2062   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2063   return res;
2064 }
2065 #define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd);
2066 #else
2067 #define INIT_GETCWD
2068 #endif
2069
2070 #if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME
2071 INTERCEPTOR(char *, get_current_dir_name, int fake) {
2072   void *ctx;
2073   COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name, fake);
2074   char *res = REAL(get_current_dir_name)(fake);
2075   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2076   return res;
2077 }
2078
2079 #define INIT_GET_CURRENT_DIR_NAME \
2080   COMMON_INTERCEPT_FUNCTION(get_current_dir_name);
2081 #else
2082 #define INIT_GET_CURRENT_DIR_NAME
2083 #endif
2084
2085 #if SANITIZER_INTERCEPT_STRTOIMAX
2086 INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) {
2087   void *ctx;
2088   COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base);
2089   INTMAX_T res = REAL(strtoimax)(nptr, endptr, base);
2090   if (endptr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr));
2091   return res;
2092 }
2093
2094 INTERCEPTOR(INTMAX_T, strtoumax, const char *nptr, char **endptr, int base) {
2095   void *ctx;
2096   COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base);
2097   INTMAX_T res = REAL(strtoumax)(nptr, endptr, base);
2098   if (endptr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr));
2099   return res;
2100 }
2101
2102 #define INIT_STRTOIMAX                  \
2103   COMMON_INTERCEPT_FUNCTION(strtoimax); \
2104   COMMON_INTERCEPT_FUNCTION(strtoumax);
2105 #else
2106 #define INIT_STRTOIMAX
2107 #endif
2108
2109 #if SANITIZER_INTERCEPT_MBSTOWCS
2110 INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) {
2111   void *ctx;
2112   COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len);
2113   SIZE_T res = REAL(mbstowcs)(dest, src, len);
2114   if (res != (SIZE_T) - 1 && dest) {
2115     SIZE_T write_cnt = res + (res < len);
2116     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
2117   }
2118   return res;
2119 }
2120
2121 INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len,
2122             void *ps) {
2123   void *ctx;
2124   COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps);
2125   if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
2126   if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
2127   SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps);
2128   if (res != (SIZE_T)(-1) && dest && src) {
2129     // This function, and several others, may or may not write the terminating
2130     // \0 character. They write it iff they clear *src.
2131     SIZE_T write_cnt = res + !*src;
2132     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
2133   }
2134   return res;
2135 }
2136
2137 #define INIT_MBSTOWCS                  \
2138   COMMON_INTERCEPT_FUNCTION(mbstowcs); \
2139   COMMON_INTERCEPT_FUNCTION(mbsrtowcs);
2140 #else
2141 #define INIT_MBSTOWCS
2142 #endif
2143
2144 #if SANITIZER_INTERCEPT_MBSNRTOWCS
2145 INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms,
2146             SIZE_T len, void *ps) {
2147   void *ctx;
2148   COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps);
2149   if (src) {
2150     COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
2151     if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
2152   }
2153   if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
2154   SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps);
2155   if (res != (SIZE_T)(-1) && dest && src) {
2156     SIZE_T write_cnt = res + !*src;
2157     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t));
2158   }
2159   return res;
2160 }
2161
2162 #define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs);
2163 #else
2164 #define INIT_MBSNRTOWCS
2165 #endif
2166
2167 #if SANITIZER_INTERCEPT_WCSTOMBS
2168 INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) {
2169   void *ctx;
2170   COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len);
2171   SIZE_T res = REAL(wcstombs)(dest, src, len);
2172   if (res != (SIZE_T) - 1 && dest) {
2173     SIZE_T write_cnt = res + (res < len);
2174     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
2175   }
2176   return res;
2177 }
2178
2179 INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len,
2180             void *ps) {
2181   void *ctx;
2182   COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps);
2183   if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
2184   if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
2185   SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps);
2186   if (res != (SIZE_T) - 1 && dest && src) {
2187     SIZE_T write_cnt = res + !*src;
2188     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
2189   }
2190   return res;
2191 }
2192
2193 #define INIT_WCSTOMBS                  \
2194   COMMON_INTERCEPT_FUNCTION(wcstombs); \
2195   COMMON_INTERCEPT_FUNCTION(wcsrtombs);
2196 #else
2197 #define INIT_WCSTOMBS
2198 #endif
2199
2200 #if SANITIZER_INTERCEPT_WCSNRTOMBS
2201 INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms,
2202             SIZE_T len, void *ps) {
2203   void *ctx;
2204   COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps);
2205   if (src) {
2206     COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
2207     if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
2208   }
2209   if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz);
2210   SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps);
2211   if (res != (SIZE_T) - 1 && dest && src) {
2212     SIZE_T write_cnt = res + !*src;
2213     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt);
2214   }
2215   return res;
2216 }
2217
2218 #define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs);
2219 #else
2220 #define INIT_WCSNRTOMBS
2221 #endif
2222
2223 #if SANITIZER_INTERCEPT_TCGETATTR
2224 INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) {
2225   void *ctx;
2226   COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p);
2227   int res = REAL(tcgetattr)(fd, termios_p);
2228   if (!res && termios_p)
2229     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz);
2230   return res;
2231 }
2232
2233 #define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr);
2234 #else
2235 #define INIT_TCGETATTR
2236 #endif
2237
2238 #if SANITIZER_INTERCEPT_REALPATH
2239 INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) {
2240   void *ctx;
2241   COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path);
2242   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
2243
2244   // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest
2245   // version of a versioned symbol. For realpath(), this gives us something
2246   // (called __old_realpath) that does not handle NULL in the second argument.
2247   // Handle it as part of the interceptor.
2248   char *allocated_path = 0;
2249   if (!resolved_path)
2250     allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1);
2251
2252   char *res = REAL(realpath)(path, resolved_path);
2253   if (allocated_path && !res) WRAP(free)(allocated_path);
2254   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2255   return res;
2256 }
2257 #define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath);
2258 #else
2259 #define INIT_REALPATH
2260 #endif
2261
2262 #if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME
2263 INTERCEPTOR(char *, canonicalize_file_name, const char *path) {
2264   void *ctx;
2265   COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path);
2266   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
2267   char *res = REAL(canonicalize_file_name)(path);
2268   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2269   return res;
2270 }
2271 #define INIT_CANONICALIZE_FILE_NAME \
2272   COMMON_INTERCEPT_FUNCTION(canonicalize_file_name);
2273 #else
2274 #define INIT_CANONICALIZE_FILE_NAME
2275 #endif
2276
2277 #if SANITIZER_INTERCEPT_CONFSTR
2278 INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) {
2279   void *ctx;
2280   COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len);
2281   SIZE_T res = REAL(confstr)(name, buf, len);
2282   if (buf && res)
2283     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len);
2284   return res;
2285 }
2286 #define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr);
2287 #else
2288 #define INIT_CONFSTR
2289 #endif
2290
2291 #if SANITIZER_INTERCEPT_SCHED_GETAFFINITY
2292 INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) {
2293   void *ctx;
2294   COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask);
2295   int res = REAL(sched_getaffinity)(pid, cpusetsize, mask);
2296   if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize);
2297   return res;
2298 }
2299 #define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity);
2300 #else
2301 #define INIT_SCHED_GETAFFINITY
2302 #endif
2303
2304 #if SANITIZER_INTERCEPT_STRERROR
2305 INTERCEPTOR(char *, strerror, int errnum) {
2306   void *ctx;
2307   COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum);
2308   char *res = REAL(strerror)(errnum);
2309   if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1);
2310   return res;
2311 }
2312 #define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror);
2313 #else
2314 #define INIT_STRERROR
2315 #endif
2316
2317 #if SANITIZER_INTERCEPT_STRERROR_R
2318 INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) {
2319   void *ctx;
2320   COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen);
2321   char *res = REAL(strerror_r)(errnum, buf, buflen);
2322   // There are 2 versions of strerror_r:
2323   //  * POSIX version returns 0 on success, negative error code on failure,
2324   //    writes message to buf.
2325   //  * GNU version returns message pointer, which points to either buf or some
2326   //    static storage.
2327   SIZE_T posix_res = (SIZE_T)res;
2328   if (posix_res < 1024 || posix_res > (SIZE_T) - 1024) {
2329     // POSIX version. Spec is not clear on whether buf is NULL-terminated.
2330     // At least on OSX, buf contents are valid even when the call fails.
2331     SIZE_T sz = internal_strnlen(buf, buflen);
2332     if (sz < buflen) ++sz;
2333     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
2334   } else {
2335     // GNU version.
2336     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2337   }
2338   return res;
2339 }
2340 #define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r);
2341 #else
2342 #define INIT_STRERROR_R
2343 #endif
2344
2345 #if SANITIZER_INTERCEPT_XPG_STRERROR_R
2346 INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) {
2347   void *ctx;
2348   COMMON_INTERCEPTOR_ENTER(ctx, __xpg_strerror_r, errnum, buf, buflen);
2349   int res = REAL(__xpg_strerror_r)(errnum, buf, buflen);
2350   // This version always returns a null-terminated string.
2351   if (buf && buflen)
2352     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, REAL(strlen)(buf) + 1);
2353   return res;
2354 }
2355 #define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r);
2356 #else
2357 #define INIT_XPG_STRERROR_R
2358 #endif
2359
2360 #if SANITIZER_INTERCEPT_SCANDIR
2361 typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *);
2362 typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **,
2363                                 const struct __sanitizer_dirent **);
2364
2365 static THREADLOCAL scandir_filter_f scandir_filter;
2366 static THREADLOCAL scandir_compar_f scandir_compar;
2367
2368 static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) {
2369   COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2370   COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, dir->d_reclen);
2371   return IndirectExternCall(scandir_filter)(dir);
2372 }
2373
2374 static int wrapped_scandir_compar(const struct __sanitizer_dirent **a,
2375                                   const struct __sanitizer_dirent **b) {
2376   COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
2377   COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a));
2378   COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, (*a)->d_reclen);
2379   COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b));
2380   COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, (*b)->d_reclen);
2381   return IndirectExternCall(scandir_compar)(a, b);
2382 }
2383
2384 INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist,
2385             scandir_filter_f filter, scandir_compar_f compar) {
2386   void *ctx;
2387   COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar);
2388   if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, REAL(strlen)(dirp) + 1);
2389   scandir_filter = filter;
2390   scandir_compar = compar;
2391   int res = REAL(scandir)(dirp, namelist, filter ? wrapped_scandir_filter : 0,
2392                           compar ? wrapped_scandir_compar : 0);
2393   scandir_filter = 0;
2394   scandir_compar = 0;
2395   if (namelist && res > 0) {
2396     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
2397     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
2398     for (int i = 0; i < res; ++i)
2399       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
2400                                      (*namelist)[i]->d_reclen);
2401   }
2402   return res;
2403 }
2404 #define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir);
2405 #else
2406 #define INIT_SCANDIR
2407 #endif
2408
2409 #if SANITIZER_INTERCEPT_SCANDIR64
2410 typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *);
2411 typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **,
2412                                   const struct __sanitizer_dirent64 **);
2413
2414 static THREADLOCAL scandir64_filter_f scandir64_filter;
2415 static THREADLOCAL scandir64_compar_f scandir64_compar;
2416
2417 static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) {
2418   COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
2419   COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, dir->d_reclen);
2420   return IndirectExternCall(scandir64_filter)(dir);
2421 }
2422
2423 static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a,
2424                                     const struct __sanitizer_dirent64 **b) {
2425   COMMON_INTERCEPTOR_UNPOISON_PARAM(2);
2426   COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a));
2427   COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, (*a)->d_reclen);
2428   COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b));
2429   COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, (*b)->d_reclen);
2430   return IndirectExternCall(scandir64_compar)(a, b);
2431 }
2432
2433 INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist,
2434             scandir64_filter_f filter, scandir64_compar_f compar) {
2435   void *ctx;
2436   COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar);
2437   if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, REAL(strlen)(dirp) + 1);
2438   scandir64_filter = filter;
2439   scandir64_compar = compar;
2440   int res =
2441       REAL(scandir64)(dirp, namelist, filter ? wrapped_scandir64_filter : 0,
2442                       compar ? wrapped_scandir64_compar : 0);
2443   scandir64_filter = 0;
2444   scandir64_compar = 0;
2445   if (namelist && res > 0) {
2446     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist));
2447     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res);
2448     for (int i = 0; i < res; ++i)
2449       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i],
2450                                      (*namelist)[i]->d_reclen);
2451   }
2452   return res;
2453 }
2454 #define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64);
2455 #else
2456 #define INIT_SCANDIR64
2457 #endif
2458
2459 #if SANITIZER_INTERCEPT_GETGROUPS
2460 INTERCEPTOR(int, getgroups, int size, u32 *lst) {
2461   void *ctx;
2462   COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst);
2463   int res = REAL(getgroups)(size, lst);
2464   if (res && lst) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst));
2465   return res;
2466 }
2467 #define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups);
2468 #else
2469 #define INIT_GETGROUPS
2470 #endif
2471
2472 #if SANITIZER_INTERCEPT_POLL
2473 static void read_pollfd(void *ctx, __sanitizer_pollfd *fds,
2474                         __sanitizer_nfds_t nfds) {
2475   for (unsigned i = 0; i < nfds; ++i) {
2476     COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd));
2477     COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events));
2478   }
2479 }
2480
2481 static void write_pollfd(void *ctx, __sanitizer_pollfd *fds,
2482                          __sanitizer_nfds_t nfds) {
2483   for (unsigned i = 0; i < nfds; ++i)
2484     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents,
2485                                    sizeof(fds[i].revents));
2486 }
2487
2488 INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
2489             int timeout) {
2490   void *ctx;
2491   COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout);
2492   if (fds && nfds) read_pollfd(ctx, fds, nfds);
2493   int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout);
2494   if (fds && nfds) write_pollfd(ctx, fds, nfds);
2495   return res;
2496 }
2497 #define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll);
2498 #else
2499 #define INIT_POLL
2500 #endif
2501
2502 #if SANITIZER_INTERCEPT_PPOLL
2503 INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
2504             void *timeout_ts, __sanitizer_sigset_t *sigmask) {
2505   void *ctx;
2506   COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask);
2507   if (fds && nfds) read_pollfd(ctx, fds, nfds);
2508   if (timeout_ts)
2509     COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz);
2510   // FIXME: read sigmask when all of sigemptyset, etc are intercepted.
2511   int res =
2512       COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask);
2513   if (fds && nfds) write_pollfd(ctx, fds, nfds);
2514   return res;
2515 }
2516 #define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll);
2517 #else
2518 #define INIT_PPOLL
2519 #endif
2520
2521 #if SANITIZER_INTERCEPT_WORDEXP
2522 INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) {
2523   void *ctx;
2524   COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags);
2525   if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1);
2526   int res = REAL(wordexp)(s, p, flags);
2527   if (!res && p) {
2528     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
2529     if (p->we_wordc)
2530       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv,
2531                                      sizeof(*p->we_wordv) * p->we_wordc);
2532     for (uptr i = 0; i < p->we_wordc; ++i) {
2533       char *w = p->we_wordv[i];
2534       if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, REAL(strlen)(w) + 1);
2535     }
2536   }
2537   return res;
2538 }
2539 #define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp);
2540 #else
2541 #define INIT_WORDEXP
2542 #endif
2543
2544 #if SANITIZER_INTERCEPT_SIGWAIT
2545 INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) {
2546   void *ctx;
2547   COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig);
2548   // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
2549   int res = REAL(sigwait)(set, sig);
2550   if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig));
2551   return res;
2552 }
2553 #define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait);
2554 #else
2555 #define INIT_SIGWAIT
2556 #endif
2557
2558 #if SANITIZER_INTERCEPT_SIGWAITINFO
2559 INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) {
2560   void *ctx;
2561   COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info);
2562   // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
2563   int res = REAL(sigwaitinfo)(set, info);
2564   if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
2565   return res;
2566 }
2567 #define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo);
2568 #else
2569 #define INIT_SIGWAITINFO
2570 #endif
2571
2572 #if SANITIZER_INTERCEPT_SIGTIMEDWAIT
2573 INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info,
2574             void *timeout) {
2575   void *ctx;
2576   COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout);
2577   if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz);
2578   // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
2579   int res = REAL(sigtimedwait)(set, info, timeout);
2580   if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz);
2581   return res;
2582 }
2583 #define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait);
2584 #else
2585 #define INIT_SIGTIMEDWAIT
2586 #endif
2587
2588 #if SANITIZER_INTERCEPT_SIGSETOPS
2589 INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) {
2590   void *ctx;
2591   COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set);
2592   int res = REAL(sigemptyset)(set);
2593   if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
2594   return res;
2595 }
2596
2597 INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) {
2598   void *ctx;
2599   COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set);
2600   int res = REAL(sigfillset)(set);
2601   if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
2602   return res;
2603 }
2604 #define INIT_SIGSETOPS                    \
2605   COMMON_INTERCEPT_FUNCTION(sigemptyset); \
2606   COMMON_INTERCEPT_FUNCTION(sigfillset);
2607 #else
2608 #define INIT_SIGSETOPS
2609 #endif
2610
2611 #if SANITIZER_INTERCEPT_SIGPENDING
2612 INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) {
2613   void *ctx;
2614   COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set);
2615   int res = REAL(sigpending)(set);
2616   if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set));
2617   return res;
2618 }
2619 #define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending);
2620 #else
2621 #define INIT_SIGPENDING
2622 #endif
2623
2624 #if SANITIZER_INTERCEPT_SIGPROCMASK
2625 INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set,
2626             __sanitizer_sigset_t *oldset) {
2627   void *ctx;
2628   COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset);
2629   // FIXME: read sigset_t when all of sigemptyset, etc are intercepted
2630   int res = REAL(sigprocmask)(how, set, oldset);
2631   if (!res && oldset)
2632     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
2633   return res;
2634 }
2635 #define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask);
2636 #else
2637 #define INIT_SIGPROCMASK
2638 #endif
2639
2640 #if SANITIZER_INTERCEPT_BACKTRACE
2641 INTERCEPTOR(int, backtrace, void **buffer, int size) {
2642   void *ctx;
2643   COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size);
2644   int res = REAL(backtrace)(buffer, size);
2645   if (res && buffer)
2646     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer));
2647   return res;
2648 }
2649
2650 INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) {
2651   void *ctx;
2652   COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size);
2653   if (buffer && size)
2654     COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer));
2655   char **res = REAL(backtrace_symbols)(buffer, size);
2656   if (res && size) {
2657     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res));
2658     for (int i = 0; i < size; ++i)
2659       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], REAL(strlen(res[i])) + 1);
2660   }
2661   return res;
2662 }
2663 #define INIT_BACKTRACE                  \
2664   COMMON_INTERCEPT_FUNCTION(backtrace); \
2665   COMMON_INTERCEPT_FUNCTION(backtrace_symbols);
2666 #else
2667 #define INIT_BACKTRACE
2668 #endif
2669
2670 #if SANITIZER_INTERCEPT__EXIT
2671 INTERCEPTOR(void, _exit, int status) {
2672   void *ctx;
2673   COMMON_INTERCEPTOR_ENTER(ctx, _exit, status);
2674   int status1 = COMMON_INTERCEPTOR_ON_EXIT(ctx);
2675   if (status == 0) status = status1;
2676   REAL(_exit)(status);
2677 }
2678 #define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit);
2679 #else
2680 #define INIT__EXIT
2681 #endif
2682
2683 #if SANITIZER_INTERCEPT_PHTREAD_MUTEX
2684 INTERCEPTOR(int, pthread_mutex_lock, void *m) {
2685   void *ctx;
2686   COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_lock, m);
2687   int res = REAL(pthread_mutex_lock)(m);
2688   if (res == errno_EOWNERDEAD)
2689     COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m);
2690   if (res == 0 || res == errno_EOWNERDEAD)
2691     COMMON_INTERCEPTOR_MUTEX_LOCK(ctx, m);
2692   return res;
2693 }
2694
2695 INTERCEPTOR(int, pthread_mutex_unlock, void *m) {
2696   void *ctx;
2697   COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_unlock, m);
2698   COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m);
2699   return REAL(pthread_mutex_unlock)(m);
2700 }
2701
2702 #define INIT_PTHREAD_MUTEX_LOCK COMMON_INTERCEPT_FUNCTION(pthread_mutex_lock)
2703 #define INIT_PTHREAD_MUTEX_UNLOCK \
2704   COMMON_INTERCEPT_FUNCTION(pthread_mutex_unlock)
2705 #else
2706 #define INIT_PTHREAD_MUTEX_LOCK
2707 #define INIT_PTHREAD_MUTEX_UNLOCK
2708 #endif
2709
2710 #if SANITIZER_INTERCEPT_GETMNTENT || SANITIZER_INTERCEPT_GETMNTENT_R
2711 static void write_mntent(void *ctx, __sanitizer_mntent *mnt) {
2712   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt, sizeof(*mnt));
2713   if (mnt->mnt_fsname)
2714     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_fsname,
2715                                    REAL(strlen)(mnt->mnt_fsname) + 1);
2716   if (mnt->mnt_dir)
2717     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir,
2718                                    REAL(strlen)(mnt->mnt_dir) + 1);
2719   if (mnt->mnt_type)
2720     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type,
2721                                    REAL(strlen)(mnt->mnt_type) + 1);
2722   if (mnt->mnt_opts)
2723     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts,
2724                                    REAL(strlen)(mnt->mnt_opts) + 1);
2725 }
2726 #endif
2727
2728 #if SANITIZER_INTERCEPT_GETMNTENT
2729 INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) {
2730   void *ctx;
2731   COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp);
2732   __sanitizer_mntent *res = REAL(getmntent)(fp);
2733   if (res) write_mntent(ctx, res);
2734   return res;
2735 }
2736 #define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent);
2737 #else
2738 #define INIT_GETMNTENT
2739 #endif
2740
2741 #if SANITIZER_INTERCEPT_GETMNTENT_R
2742 INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp,
2743             __sanitizer_mntent *mntbuf, char *buf, int buflen) {
2744   void *ctx;
2745   COMMON_INTERCEPTOR_ENTER(ctx, getmntent_r, fp, mntbuf, buf, buflen);
2746   __sanitizer_mntent *res = REAL(getmntent_r)(fp, mntbuf, buf, buflen);
2747   if (res) write_mntent(ctx, res);
2748   return res;
2749 }
2750 #define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r);
2751 #else
2752 #define INIT_GETMNTENT_R
2753 #endif
2754
2755 #if SANITIZER_INTERCEPT_STATFS
2756 INTERCEPTOR(int, statfs, char *path, void *buf) {
2757   void *ctx;
2758   COMMON_INTERCEPTOR_ENTER(ctx, statfs, path, buf);
2759   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
2760   int res = REAL(statfs)(path, buf);
2761   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz);
2762   return res;
2763 }
2764 INTERCEPTOR(int, fstatfs, int fd, void *buf) {
2765   void *ctx;
2766   COMMON_INTERCEPTOR_ENTER(ctx, fstatfs, fd, buf);
2767   int res = REAL(fstatfs)(fd, buf);
2768   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz);
2769   return res;
2770 }
2771 #define INIT_STATFS                  \
2772   COMMON_INTERCEPT_FUNCTION(statfs); \
2773   COMMON_INTERCEPT_FUNCTION(fstatfs);
2774 #else
2775 #define INIT_STATFS
2776 #endif
2777
2778 #if SANITIZER_INTERCEPT_STATFS64
2779 INTERCEPTOR(int, statfs64, char *path, void *buf) {
2780   void *ctx;
2781   COMMON_INTERCEPTOR_ENTER(ctx, statfs64, path, buf);
2782   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
2783   int res = REAL(statfs64)(path, buf);
2784   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz);
2785   return res;
2786 }
2787 INTERCEPTOR(int, fstatfs64, int fd, void *buf) {
2788   void *ctx;
2789   COMMON_INTERCEPTOR_ENTER(ctx, fstatfs64, fd, buf);
2790   int res = REAL(fstatfs64)(fd, buf);
2791   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz);
2792   return res;
2793 }
2794 #define INIT_STATFS64                  \
2795   COMMON_INTERCEPT_FUNCTION(statfs64); \
2796   COMMON_INTERCEPT_FUNCTION(fstatfs64);
2797 #else
2798 #define INIT_STATFS64
2799 #endif
2800
2801 #if SANITIZER_INTERCEPT_STATVFS
2802 INTERCEPTOR(int, statvfs, char *path, void *buf) {
2803   void *ctx;
2804   COMMON_INTERCEPTOR_ENTER(ctx, statvfs, path, buf);
2805   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
2806   int res = REAL(statvfs)(path, buf);
2807   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
2808   return res;
2809 }
2810 INTERCEPTOR(int, fstatvfs, int fd, void *buf) {
2811   void *ctx;
2812   COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf);
2813   int res = REAL(fstatvfs)(fd, buf);
2814   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz);
2815   return res;
2816 }
2817 #define INIT_STATVFS                  \
2818   COMMON_INTERCEPT_FUNCTION(statvfs); \
2819   COMMON_INTERCEPT_FUNCTION(fstatvfs);
2820 #else
2821 #define INIT_STATVFS
2822 #endif
2823
2824 #if SANITIZER_INTERCEPT_STATVFS64
2825 INTERCEPTOR(int, statvfs64, char *path, void *buf) {
2826   void *ctx;
2827   COMMON_INTERCEPTOR_ENTER(ctx, statvfs64, path, buf);
2828   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
2829   int res = REAL(statvfs64)(path, buf);
2830   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz);
2831   return res;
2832 }
2833 INTERCEPTOR(int, fstatvfs64, int fd, void *buf) {
2834   void *ctx;
2835   COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs64, fd, buf);
2836   int res = REAL(fstatvfs64)(fd, buf);
2837   if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz);
2838   return res;
2839 }
2840 #define INIT_STATVFS64                  \
2841   COMMON_INTERCEPT_FUNCTION(statvfs64); \
2842   COMMON_INTERCEPT_FUNCTION(fstatvfs64);
2843 #else
2844 #define INIT_STATVFS64
2845 #endif
2846
2847 #if SANITIZER_INTERCEPT_INITGROUPS
2848 INTERCEPTOR(int, initgroups, char *user, u32 group) {
2849   void *ctx;
2850   COMMON_INTERCEPTOR_ENTER(ctx, initgroups, user, group);
2851   if (user) COMMON_INTERCEPTOR_READ_RANGE(ctx, user, REAL(strlen)(user) + 1);
2852   int res = REAL(initgroups)(user, group);
2853   return res;
2854 }
2855 #define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups);
2856 #else
2857 #define INIT_INITGROUPS
2858 #endif
2859
2860 #if SANITIZER_INTERCEPT_ETHER
2861 INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) {
2862   void *ctx;
2863   COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa, addr);
2864   if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
2865   char *res = REAL(ether_ntoa)(addr);
2866   if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1);
2867   return res;
2868 }
2869 INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) {
2870   void *ctx;
2871   COMMON_INTERCEPTOR_ENTER(ctx, ether_aton, buf);
2872   if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, REAL(strlen)(buf) + 1);
2873   __sanitizer_ether_addr *res = REAL(ether_aton)(buf);
2874   if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, sizeof(*res));
2875   return res;
2876 }
2877 INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) {
2878   void *ctx;
2879   COMMON_INTERCEPTOR_ENTER(ctx, ether_ntohost, hostname, addr);
2880   if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
2881   int res = REAL(ether_ntohost)(hostname, addr);
2882   if (!res && hostname)
2883     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1);
2884   return res;
2885 }
2886 INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) {
2887   void *ctx;
2888   COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr);
2889   if (hostname)
2890     COMMON_INTERCEPTOR_READ_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1);
2891   int res = REAL(ether_hostton)(hostname, addr);
2892   if (!res && addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
2893   return res;
2894 }
2895 INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr,
2896             char *hostname) {
2897   void *ctx;
2898   COMMON_INTERCEPTOR_ENTER(ctx, ether_line, line, addr, hostname);
2899   if (line) COMMON_INTERCEPTOR_READ_RANGE(ctx, line, REAL(strlen)(line) + 1);
2900   int res = REAL(ether_line)(line, addr, hostname);
2901   if (!res) {
2902     if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
2903     if (hostname)
2904       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1);
2905   }
2906   return res;
2907 }
2908 #define INIT_ETHER                          \
2909   COMMON_INTERCEPT_FUNCTION(ether_ntoa);    \
2910   COMMON_INTERCEPT_FUNCTION(ether_aton);    \
2911   COMMON_INTERCEPT_FUNCTION(ether_ntohost); \
2912   COMMON_INTERCEPT_FUNCTION(ether_hostton); \
2913   COMMON_INTERCEPT_FUNCTION(ether_line);
2914 #else
2915 #define INIT_ETHER
2916 #endif
2917
2918 #if SANITIZER_INTERCEPT_ETHER_R
2919 INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) {
2920   void *ctx;
2921   COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa_r, addr, buf);
2922   if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr));
2923   char *res = REAL(ether_ntoa_r)(addr, buf);
2924   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2925   return res;
2926 }
2927 INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf,
2928             __sanitizer_ether_addr *addr) {
2929   void *ctx;
2930   COMMON_INTERCEPTOR_ENTER(ctx, ether_aton_r, buf, addr);
2931   if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, REAL(strlen)(buf) + 1);
2932   __sanitizer_ether_addr *res = REAL(ether_aton_r)(buf, addr);
2933   if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(*res));
2934   return res;
2935 }
2936 #define INIT_ETHER_R                       \
2937   COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \
2938   COMMON_INTERCEPT_FUNCTION(ether_aton_r);
2939 #else
2940 #define INIT_ETHER_R
2941 #endif
2942
2943 #if SANITIZER_INTERCEPT_SHMCTL
2944 INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) {
2945   void *ctx;
2946   COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf);
2947   int res = REAL(shmctl)(shmid, cmd, buf);
2948   if (res >= 0) {
2949     unsigned sz = 0;
2950     if (cmd == shmctl_ipc_stat || cmd == shmctl_shm_stat)
2951       sz = sizeof(__sanitizer_shmid_ds);
2952     else if (cmd == shmctl_ipc_info)
2953       sz = struct_shminfo_sz;
2954     else if (cmd == shmctl_shm_info)
2955       sz = struct_shm_info_sz;
2956     if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz);
2957   }
2958   return res;
2959 }
2960 #define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl);
2961 #else
2962 #define INIT_SHMCTL
2963 #endif
2964
2965 #if SANITIZER_INTERCEPT_RANDOM_R
2966 INTERCEPTOR(int, random_r, void *buf, u32 *result) {
2967   void *ctx;
2968   COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result);
2969   int res = REAL(random_r)(buf, result);
2970   if (!res && result)
2971     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2972   return res;
2973 }
2974 #define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r);
2975 #else
2976 #define INIT_RANDOM_R
2977 #endif
2978
2979 #if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET || \
2980     SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSSCHED
2981 #define INTERCEPTOR_PTHREAD_ATTR_GET(what, sz)                      \
2982   INTERCEPTOR(int, pthread_attr_get##what, void *attr, void *r) {   \
2983     void *ctx;                                                      \
2984     COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_get##what, attr, r); \
2985     int res = REAL(pthread_attr_get##what)(attr, r);                \
2986     if (!res && r) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, r, sz);      \
2987     return res;                                                     \
2988   }
2989 #endif
2990
2991 #if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET
2992 INTERCEPTOR_PTHREAD_ATTR_GET(detachstate, sizeof(int))
2993 INTERCEPTOR_PTHREAD_ATTR_GET(guardsize, sizeof(SIZE_T))
2994 INTERCEPTOR_PTHREAD_ATTR_GET(schedparam, struct_sched_param_sz)
2995 INTERCEPTOR_PTHREAD_ATTR_GET(schedpolicy, sizeof(int))
2996 INTERCEPTOR_PTHREAD_ATTR_GET(scope, sizeof(int))
2997 INTERCEPTOR_PTHREAD_ATTR_GET(stacksize, sizeof(SIZE_T))
2998 INTERCEPTOR(int, pthread_attr_getstack, void *attr, void **addr, SIZE_T *size) {
2999   void *ctx;
3000   COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size);
3001   int res = REAL(pthread_attr_getstack)(attr, addr, size);
3002   if (!res) {
3003     if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
3004     if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size));
3005   }
3006   return res;
3007 }
3008
3009 // We may need to call the real pthread_attr_getstack from the run-time
3010 // in sanitizer_common, but we don't want to include the interception headers
3011 // there. So, just define this function here.
3012 namespace __sanitizer {
3013 extern "C" {
3014 int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) {
3015   return REAL(pthread_attr_getstack)(attr, addr, size);
3016 }
3017 }  // extern "C"
3018 }  // namespace __sanitizer
3019
3020 #define INIT_PTHREAD_ATTR_GET                             \
3021   COMMON_INTERCEPT_FUNCTION(pthread_attr_getdetachstate); \
3022   COMMON_INTERCEPT_FUNCTION(pthread_attr_getguardsize);   \
3023   COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedparam);  \
3024   COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedpolicy); \
3025   COMMON_INTERCEPT_FUNCTION(pthread_attr_getscope);       \
3026   COMMON_INTERCEPT_FUNCTION(pthread_attr_getstacksize);   \
3027   COMMON_INTERCEPT_FUNCTION(pthread_attr_getstack);
3028 #else
3029 #define INIT_PTHREAD_ATTR_GET
3030 #endif
3031
3032 #if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED
3033 INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int))
3034
3035 #define INIT_PTHREAD_ATTR_GETINHERITSCHED \
3036   COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched);
3037 #else
3038 #define INIT_PTHREAD_ATTR_GETINHERITSCHED
3039 #endif
3040
3041 #if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP
3042 INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize,
3043             void *cpuset) {
3044   void *ctx;
3045   COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize,
3046                            cpuset);
3047   int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset);
3048   if (!res && cpusetsize && cpuset)
3049     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize);
3050   return res;
3051 }
3052
3053 #define INIT_PTHREAD_ATTR_GETAFFINITY_NP \
3054   COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np);
3055 #else
3056 #define INIT_PTHREAD_ATTR_GETAFFINITY_NP
3057 #endif
3058
3059 #if SANITIZER_INTERCEPT_TMPNAM
3060 INTERCEPTOR(char *, tmpnam, char *s) {
3061   void *ctx;
3062   COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s);
3063   char *res = REAL(tmpnam)(s);
3064   if (res) {
3065     if (s)
3066       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, REAL(strlen)(s) + 1);
3067     else
3068       COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1);
3069   }
3070   return res;
3071 }
3072 #define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam);
3073 #else
3074 #define INIT_TMPNAM
3075 #endif
3076
3077 #if SANITIZER_INTERCEPT_TMPNAM_R
3078 INTERCEPTOR(char *, tmpnam_r, char *s) {
3079   void *ctx;
3080   COMMON_INTERCEPTOR_ENTER(ctx, tmpnam_r, s);
3081   char *res = REAL(tmpnam_r)(s);
3082   if (res && s) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, REAL(strlen)(s) + 1);
3083   return res;
3084 }
3085 #define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r);
3086 #else
3087 #define INIT_TMPNAM_R
3088 #endif
3089
3090 #if SANITIZER_INTERCEPT_TEMPNAM
3091 INTERCEPTOR(char *, tempnam, char *dir, char *pfx) {
3092   void *ctx;
3093   COMMON_INTERCEPTOR_ENTER(ctx, tempnam, dir, pfx);
3094   if (dir) COMMON_INTERCEPTOR_READ_RANGE(ctx, dir, REAL(strlen)(dir) + 1);
3095   if (pfx) COMMON_INTERCEPTOR_READ_RANGE(ctx, pfx, REAL(strlen)(pfx) + 1);
3096   char *res = REAL(tempnam)(dir, pfx);
3097   if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1);
3098   return res;
3099 }
3100 #define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam);
3101 #else
3102 #define INIT_TEMPNAM
3103 #endif
3104
3105 #if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP
3106 INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) {
3107   void *ctx;
3108   COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name);
3109   COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name);
3110   return REAL(pthread_setname_np)(thread, name);
3111 }
3112 #define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np);
3113 #else
3114 #define INIT_PTHREAD_SETNAME_NP
3115 #endif
3116
3117 #if SANITIZER_INTERCEPT_SINCOS
3118 INTERCEPTOR(void, sincos, double x, double *sin, double *cos) {
3119   void *ctx;
3120   COMMON_INTERCEPTOR_ENTER(ctx, sincos, x, sin, cos);
3121   REAL(sincos)(x, sin, cos);
3122   if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
3123   if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
3124 }
3125 INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) {
3126   void *ctx;
3127   COMMON_INTERCEPTOR_ENTER(ctx, sincosf, x, sin, cos);
3128   REAL(sincosf)(x, sin, cos);
3129   if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
3130   if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
3131 }
3132 INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) {
3133   void *ctx;
3134   COMMON_INTERCEPTOR_ENTER(ctx, sincosl, x, sin, cos);
3135   REAL(sincosl)(x, sin, cos);
3136   if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin));
3137   if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos));
3138 }
3139 #define INIT_SINCOS                   \
3140   COMMON_INTERCEPT_FUNCTION(sincos);  \
3141   COMMON_INTERCEPT_FUNCTION(sincosf); \
3142   COMMON_INTERCEPT_FUNCTION(sincosl);
3143 #else
3144 #define INIT_SINCOS
3145 #endif
3146
3147 #if SANITIZER_INTERCEPT_REMQUO
3148 INTERCEPTOR(double, remquo, double x, double y, int *quo) {
3149   void *ctx;
3150   COMMON_INTERCEPTOR_ENTER(ctx, remquo, x, y, quo);
3151   double res = REAL(remquo)(x, y, quo);
3152   if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
3153   return res;
3154 }
3155 INTERCEPTOR(float, remquof, float x, float y, int *quo) {
3156   void *ctx;
3157   COMMON_INTERCEPTOR_ENTER(ctx, remquof, x, y, quo);
3158   float res = REAL(remquof)(x, y, quo);
3159   if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
3160   return res;
3161 }
3162 INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) {
3163   void *ctx;
3164   COMMON_INTERCEPTOR_ENTER(ctx, remquol, x, y, quo);
3165   long double res = REAL(remquol)(x, y, quo);
3166   if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo));
3167   return res;
3168 }
3169 #define INIT_REMQUO                   \
3170   COMMON_INTERCEPT_FUNCTION(remquo);  \
3171   COMMON_INTERCEPT_FUNCTION(remquof); \
3172   COMMON_INTERCEPT_FUNCTION(remquol);
3173 #else
3174 #define INIT_REMQUO
3175 #endif
3176
3177 #if SANITIZER_INTERCEPT_LGAMMA
3178 extern int signgam;
3179 INTERCEPTOR(double, lgamma, double x) {
3180   void *ctx;
3181   COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x);
3182   double res = REAL(lgamma)(x);
3183   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
3184   return res;
3185 }
3186 INTERCEPTOR(float, lgammaf, float x) {
3187   void *ctx;
3188   COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x);
3189   float res = REAL(lgammaf)(x);
3190   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
3191   return res;
3192 }
3193 INTERCEPTOR(long double, lgammal, long double x) {
3194   void *ctx;
3195   COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x);
3196   long double res = REAL(lgammal)(x);
3197   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
3198   return res;
3199 }
3200 #define INIT_LGAMMA                   \
3201   COMMON_INTERCEPT_FUNCTION(lgamma);  \
3202   COMMON_INTERCEPT_FUNCTION(lgammaf); \
3203   COMMON_INTERCEPT_FUNCTION(lgammal);
3204 #else
3205 #define INIT_LGAMMA
3206 #endif
3207
3208 #if SANITIZER_INTERCEPT_LGAMMA_R
3209 INTERCEPTOR(double, lgamma_r, double x, int *signp) {
3210   void *ctx;
3211   COMMON_INTERCEPTOR_ENTER(ctx, lgamma_r, x, signp);
3212   double res = REAL(lgamma_r)(x, signp);
3213   if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
3214   return res;
3215 }
3216 INTERCEPTOR(float, lgammaf_r, float x, int *signp) {
3217   void *ctx;
3218   COMMON_INTERCEPTOR_ENTER(ctx, lgammaf_r, x, signp);
3219   float res = REAL(lgammaf_r)(x, signp);
3220   if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
3221   return res;
3222 }
3223 INTERCEPTOR(long double, lgammal_r, long double x, int *signp) {
3224   void *ctx;
3225   COMMON_INTERCEPTOR_ENTER(ctx, lgammal_r, x, signp);
3226   long double res = REAL(lgammal_r)(x, signp);
3227   if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp));
3228   return res;
3229 }
3230 #define INIT_LGAMMA_R                   \
3231   COMMON_INTERCEPT_FUNCTION(lgamma_r);  \
3232   COMMON_INTERCEPT_FUNCTION(lgammaf_r); \
3233   COMMON_INTERCEPT_FUNCTION(lgammal_r);
3234 #else
3235 #define INIT_LGAMMA_R
3236 #endif
3237
3238 #if SANITIZER_INTERCEPT_DRAND48_R
3239 INTERCEPTOR(int, drand48_r, void *buffer, double *result) {
3240   void *ctx;
3241   COMMON_INTERCEPTOR_ENTER(ctx, drand48_r, buffer, result);
3242   int res = REAL(drand48_r)(buffer, result);
3243   if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3244   return res;
3245 }
3246 INTERCEPTOR(int, lrand48_r, void *buffer, long *result) {
3247   void *ctx;
3248   COMMON_INTERCEPTOR_ENTER(ctx, lrand48_r, buffer, result);
3249   int res = REAL(lrand48_r)(buffer, result);
3250   if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
3251   return res;
3252 }
3253 #define INIT_DRAND48_R                  \
3254   COMMON_INTERCEPT_FUNCTION(drand48_r); \
3255   COMMON_INTERCEPT_FUNCTION(lrand48_r);
3256 #else
3257 #define INIT_DRAND48_R
3258 #endif
3259
3260 #if SANITIZER_INTERCEPT_RAND_R
3261 INTERCEPTOR(int, rand_r, unsigned *seedp) {
3262   void *ctx;
3263   COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp);
3264   COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp));
3265   return REAL(rand_r)(seedp);
3266 }
3267 #define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r);
3268 #else
3269 #define INIT_RAND_R
3270 #endif
3271
3272 #if SANITIZER_INTERCEPT_GETLINE
3273 INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) {
3274   void *ctx;
3275   COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream);
3276   SSIZE_T res = REAL(getline)(lineptr, n, stream);
3277   if (res > 0) {
3278     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr));
3279     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
3280     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1);
3281   }
3282   return res;
3283 }
3284 INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim,
3285             void *stream) {
3286   void *ctx;
3287   COMMON_INTERCEPTOR_ENTER(ctx, getdelim, lineptr, n, delim, stream);
3288   SSIZE_T res = REAL(getdelim)(lineptr, n, delim, stream);
3289   if (res > 0) {
3290     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr));
3291     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n));
3292     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1);
3293   }
3294   return res;
3295 }
3296 #define INIT_GETLINE                  \
3297   COMMON_INTERCEPT_FUNCTION(getline); \
3298   COMMON_INTERCEPT_FUNCTION(getdelim);
3299 #else
3300 #define INIT_GETLINE
3301 #endif
3302
3303 #if SANITIZER_INTERCEPT_ICONV
3304 INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft,
3305             char **outbuf, SIZE_T *outbytesleft) {
3306   void *ctx;
3307   COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf,
3308                            outbytesleft);
3309   if (inbytesleft)
3310     COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft));
3311   if (inbuf && inbytesleft)
3312     COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft);
3313   if (outbytesleft)
3314     COMMON_INTERCEPTOR_READ_RANGE(ctx, outbytesleft, sizeof(*outbytesleft));
3315   void *outbuf_orig = outbuf ? *outbuf : 0;
3316   SIZE_T res = REAL(iconv)(cd, inbuf, inbytesleft, outbuf, outbytesleft);
3317   if (res != (SIZE_T) - 1 && outbuf && *outbuf > outbuf_orig) {
3318     SIZE_T sz = (char *)*outbuf - (char *)outbuf_orig;
3319     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, outbuf_orig, sz);
3320   }
3321   return res;
3322 }
3323 #define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv);
3324 #else
3325 #define INIT_ICONV
3326 #endif
3327
3328 #if SANITIZER_INTERCEPT_TIMES
3329 INTERCEPTOR(__sanitizer_clock_t, times, void *tms) {
3330   void *ctx;
3331   COMMON_INTERCEPTOR_ENTER(ctx, times, tms);
3332   __sanitizer_clock_t res = REAL(times)(tms);
3333   if (res != (__sanitizer_clock_t)-1 && tms)
3334     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tms, struct_tms_sz);
3335   return res;
3336 }
3337 #define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times);
3338 #else
3339 #define INIT_TIMES
3340 #endif
3341
3342 #if SANITIZER_INTERCEPT_TLS_GET_ADDR
3343 #define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_addr)
3344 INTERCEPTOR(void *, __tls_get_addr, void *arg) {
3345   void *ctx;
3346   COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr, arg);
3347   void *res = REAL(__tls_get_addr)(arg);
3348   DTLS_on_tls_get_addr(arg, res);
3349   return res;
3350 }
3351 #else
3352 #define INIT_TLS_GET_ADDR
3353 #endif
3354
3355 #if SANITIZER_INTERCEPT_LISTXATTR
3356 INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) {
3357   void *ctx;
3358   COMMON_INTERCEPTOR_ENTER(ctx, listxattr, path, list, size);
3359   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3360   SSIZE_T res = REAL(listxattr)(path, list, size);
3361   // Here and below, size == 0 is a special case where nothing is written to the
3362   // buffer, and res contains the desired buffer size.
3363   if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
3364   return res;
3365 }
3366 INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) {
3367   void *ctx;
3368   COMMON_INTERCEPTOR_ENTER(ctx, llistxattr, path, list, size);
3369   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3370   SSIZE_T res = REAL(llistxattr)(path, list, size);
3371   if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
3372   return res;
3373 }
3374 INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) {
3375   void *ctx;
3376   COMMON_INTERCEPTOR_ENTER(ctx, flistxattr, fd, list, size);
3377   SSIZE_T res = REAL(flistxattr)(fd, list, size);
3378   if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res);
3379   return res;
3380 }
3381 #define INIT_LISTXATTR                   \
3382   COMMON_INTERCEPT_FUNCTION(listxattr);  \
3383   COMMON_INTERCEPT_FUNCTION(llistxattr); \
3384   COMMON_INTERCEPT_FUNCTION(flistxattr);
3385 #else
3386 #define INIT_LISTXATTR
3387 #endif
3388
3389 #if SANITIZER_INTERCEPT_GETXATTR
3390 INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value,
3391             SIZE_T size) {
3392   void *ctx;
3393   COMMON_INTERCEPTOR_ENTER(ctx, getxattr, path, name, value, size);
3394   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3395   if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
3396   SSIZE_T res = REAL(getxattr)(path, name, value, size);
3397   if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
3398   return res;
3399 }
3400 INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value,
3401             SIZE_T size) {
3402   void *ctx;
3403   COMMON_INTERCEPTOR_ENTER(ctx, lgetxattr, path, name, value, size);
3404   if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3405   if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
3406   SSIZE_T res = REAL(lgetxattr)(path, name, value, size);
3407   if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
3408   return res;
3409 }
3410 INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value,
3411             SIZE_T size) {
3412   void *ctx;
3413   COMMON_INTERCEPTOR_ENTER(ctx, fgetxattr, fd, name, value, size);
3414   if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, REAL(strlen)(name) + 1);
3415   SSIZE_T res = REAL(fgetxattr)(fd, name, value, size);
3416   if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res);
3417   return res;
3418 }
3419 #define INIT_GETXATTR                   \
3420   COMMON_INTERCEPT_FUNCTION(getxattr);  \
3421   COMMON_INTERCEPT_FUNCTION(lgetxattr); \
3422   COMMON_INTERCEPT_FUNCTION(fgetxattr);
3423 #else
3424 #define INIT_GETXATTR
3425 #endif
3426
3427 #if SANITIZER_INTERCEPT_GETRESID
3428 INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) {
3429   void *ctx;
3430   COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid);
3431   int res = REAL(getresuid)(ruid, euid, suid);
3432   if (res >= 0) {
3433     if (ruid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ruid, uid_t_sz);
3434     if (euid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, euid, uid_t_sz);
3435     if (suid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, suid, uid_t_sz);
3436   }
3437   return res;
3438 }
3439 INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) {
3440   void *ctx;
3441   COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid);
3442   int res = REAL(getresgid)(rgid, egid, sgid);
3443   if (res >= 0) {
3444     if (rgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rgid, gid_t_sz);
3445     if (egid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, egid, gid_t_sz);
3446     if (sgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sgid, gid_t_sz);
3447   }
3448   return res;
3449 }
3450 #define INIT_GETRESID                   \
3451   COMMON_INTERCEPT_FUNCTION(getresuid); \
3452   COMMON_INTERCEPT_FUNCTION(getresgid);
3453 #else
3454 #define INIT_GETRESID
3455 #endif
3456
3457 #if SANITIZER_INTERCEPT_GETIFADDRS
3458 // As long as getifaddrs()/freeifaddrs() use calloc()/free(), we don't need to
3459 // intercept freeifaddrs(). If that ceases to be the case, we might need to
3460 // intercept it to poison the memory again.
3461 INTERCEPTOR(int, getifaddrs, __sanitizer_ifaddrs **ifap) {
3462   void *ctx;
3463   COMMON_INTERCEPTOR_ENTER(ctx, getifaddrs, ifap);
3464   int res = REAL(getifaddrs)(ifap);
3465   if (res == 0 && ifap) {
3466     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifap, sizeof(void *));
3467     __sanitizer_ifaddrs *p = *ifap;
3468     while (p) {
3469       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs));
3470       if (p->ifa_name)
3471         COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name,
3472                                        REAL(strlen)(p->ifa_name) + 1);
3473       if (p->ifa_addr)
3474         COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz);
3475       if (p->ifa_netmask)
3476         COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_netmask, struct_sockaddr_sz);
3477       // On Linux this is a union, but the other member also points to a
3478       // struct sockaddr, so the following is sufficient.
3479       if (p->ifa_dstaddr)
3480         COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz);
3481       // FIXME(smatveev): Unpoison p->ifa_data as well.
3482       p = p->ifa_next;
3483     }
3484   }
3485   return res;
3486 }
3487 #define INIT_GETIFADDRS                  \
3488   COMMON_INTERCEPT_FUNCTION(getifaddrs);
3489 #else
3490 #define INIT_GETIFADDRS
3491 #endif
3492
3493 #if SANITIZER_INTERCEPT_IF_INDEXTONAME
3494 INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) {
3495   void *ctx;
3496   COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname);
3497   char *res = REAL(if_indextoname)(ifindex, ifname);
3498   if (res && ifname)
3499     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, REAL(strlen)(ifname) + 1);
3500   return res;
3501 }
3502 INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) {
3503   void *ctx;
3504   COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname);
3505   if (ifname)
3506     COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, REAL(strlen)(ifname) + 1);
3507   return REAL(if_nametoindex)(ifname);
3508 }
3509 #define INIT_IF_INDEXTONAME                  \
3510   COMMON_INTERCEPT_FUNCTION(if_indextoname); \
3511   COMMON_INTERCEPT_FUNCTION(if_nametoindex);
3512 #else
3513 #define INIT_IF_INDEXTONAME
3514 #endif
3515
3516 #if SANITIZER_INTERCEPT_CAPGET
3517 INTERCEPTOR(int, capget, void *hdrp, void *datap) {
3518   void *ctx;
3519   COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap);
3520   if (hdrp)
3521     COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
3522   int res = REAL(capget)(hdrp, datap);
3523   if (res == 0 && datap)
3524     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datap, __user_cap_data_struct_sz);
3525   // We can also return -1 and write to hdrp->version if the version passed in
3526   // hdrp->version is unsupported. But that's not a trivial condition to check,
3527   // and anyway COMMON_INTERCEPTOR_READ_RANGE protects us to some extent.
3528   return res;
3529 }
3530 INTERCEPTOR(int, capset, void *hdrp, const void *datap) {
3531   void *ctx;
3532   COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap);
3533   if (hdrp)
3534     COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
3535   if (datap)
3536     COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, __user_cap_data_struct_sz);
3537   return REAL(capset)(hdrp, datap);
3538 }
3539 #define INIT_CAPGET                  \
3540   COMMON_INTERCEPT_FUNCTION(capget); \
3541   COMMON_INTERCEPT_FUNCTION(capset);
3542 #else
3543 #define INIT_CAPGET
3544 #endif
3545
3546 #if SANITIZER_INTERCEPT_AEABI_MEM
3547 DECLARE_REAL_AND_INTERCEPTOR(void *, memmove, void *, const void *, uptr);
3548 DECLARE_REAL_AND_INTERCEPTOR(void *, memcpy, void *, const void *, uptr);
3549 DECLARE_REAL_AND_INTERCEPTOR(void *, memset, void *, int, uptr);
3550
3551 INTERCEPTOR(void *, __aeabi_memmove, void *to, const void *from, uptr size) {
3552   return WRAP(memmove)(to, from, size);
3553 }
3554 INTERCEPTOR(void *, __aeabi_memmove4, void *to, const void *from, uptr size) {
3555   return WRAP(memmove)(to, from, size);
3556 }
3557 INTERCEPTOR(void *, __aeabi_memmove8, void *to, const void *from, uptr size) {
3558   return WRAP(memmove)(to, from, size);
3559 }
3560 INTERCEPTOR(void *, __aeabi_memcpy, void *to, const void *from, uptr size) {
3561   return WRAP(memcpy)(to, from, size);
3562 }
3563 INTERCEPTOR(void *, __aeabi_memcpy4, void *to, const void *from, uptr size) {
3564   return WRAP(memcpy)(to, from, size);
3565 }
3566 INTERCEPTOR(void *, __aeabi_memcpy8, void *to, const void *from, uptr size) {
3567   return WRAP(memcpy)(to, from, size);
3568 }
3569 // Note the argument order.
3570 INTERCEPTOR(void *, __aeabi_memset, void *block, uptr size, int c) {
3571   return WRAP(memset)(block, c, size);
3572 }
3573 INTERCEPTOR(void *, __aeabi_memset4, void *block, uptr size, int c) {
3574   return WRAP(memset)(block, c, size);
3575 }
3576 INTERCEPTOR(void *, __aeabi_memset8, void *block, uptr size, int c) {
3577   return WRAP(memset)(block, c, size);
3578 }
3579 INTERCEPTOR(void *, __aeabi_memclr, void *block, uptr size) {
3580   return WRAP(memset)(block, 0, size);
3581 }
3582 INTERCEPTOR(void *, __aeabi_memclr4, void *block, uptr size) {
3583   return WRAP(memset)(block, 0, size);
3584 }
3585 INTERCEPTOR(void *, __aeabi_memclr8, void *block, uptr size) {
3586   return WRAP(memset)(block, 0, size);
3587 }
3588 #define INIT_AEABI_MEM                         \
3589   COMMON_INTERCEPT_FUNCTION(__aeabi_memmove);  \
3590   COMMON_INTERCEPT_FUNCTION(__aeabi_memmove4); \
3591   COMMON_INTERCEPT_FUNCTION(__aeabi_memmove8); \
3592   COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy);   \
3593   COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy4);  \
3594   COMMON_INTERCEPT_FUNCTION(__aeabi_memcpy8);  \
3595   COMMON_INTERCEPT_FUNCTION(__aeabi_memset);   \
3596   COMMON_INTERCEPT_FUNCTION(__aeabi_memset4);  \
3597   COMMON_INTERCEPT_FUNCTION(__aeabi_memset8);  \
3598   COMMON_INTERCEPT_FUNCTION(__aeabi_memclr);   \
3599   COMMON_INTERCEPT_FUNCTION(__aeabi_memclr4);  \
3600   COMMON_INTERCEPT_FUNCTION(__aeabi_memclr8);
3601 #else
3602 #define INIT_AEABI_MEM
3603 #endif  // SANITIZER_INTERCEPT_AEABI_MEM
3604
3605 #if SANITIZER_INTERCEPT___BZERO
3606 DECLARE_REAL_AND_INTERCEPTOR(void *, memset, void *, int, uptr);
3607
3608 INTERCEPTOR(void *, __bzero, void *block, uptr size) {
3609   return WRAP(memset)(block, 0, size);
3610 }
3611 #define INIT___BZERO COMMON_INTERCEPT_FUNCTION(__bzero);
3612 #else
3613 #define INIT___BZERO
3614 #endif  // SANITIZER_INTERCEPT___BZERO
3615
3616 #if SANITIZER_INTERCEPT_FTIME
3617 INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) {
3618   void *ctx;
3619   COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp);
3620   int res = REAL(ftime)(tp);
3621   if (tp)
3622     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp));
3623   return res;
3624 }
3625 #define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime);
3626 #else
3627 #define INIT_FTIME
3628 #endif  // SANITIZER_INTERCEPT_FTIME
3629
3630 #if SANITIZER_INTERCEPT_XDR
3631 INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr,
3632             unsigned size, int op) {
3633   void *ctx;
3634   COMMON_INTERCEPTOR_ENTER(ctx, xdrmem_create, xdrs, addr, size, op);
3635   REAL(xdrmem_create)(xdrs, addr, size, op);
3636   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs));
3637   if (op == __sanitizer_XDR_ENCODE) {
3638     // It's not obvious how much data individual xdr_ routines write.
3639     // Simply unpoison the entire target buffer in advance.
3640     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (void *)addr, size);
3641   }
3642 }
3643
3644 INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) {
3645   void *ctx;
3646   COMMON_INTERCEPTOR_ENTER(ctx, xdrstdio_create, xdrs, file, op);
3647   REAL(xdrstdio_create)(xdrs, file, op);
3648   COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs));
3649 }
3650
3651 #define XDR_INTERCEPTOR(F, T)                             \
3652   INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) {      \
3653     void *ctx;                                            \
3654     COMMON_INTERCEPTOR_ENTER(ctx, F, xdrs, p);            \
3655     if (p && xdrs->x_op == __sanitizer_XDR_ENCODE)        \
3656       COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));  \
3657     int res = REAL(F)(xdrs, p);                           \
3658     if (res && p && xdrs->x_op == __sanitizer_XDR_DECODE) \
3659       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); \
3660     return res;                                           \
3661   }
3662
3663 XDR_INTERCEPTOR(xdr_short, short)
3664 XDR_INTERCEPTOR(xdr_u_short, unsigned short)
3665 XDR_INTERCEPTOR(xdr_int, int)
3666 XDR_INTERCEPTOR(xdr_u_int, unsigned)
3667 XDR_INTERCEPTOR(xdr_long, long)
3668 XDR_INTERCEPTOR(xdr_u_long, unsigned long)
3669 XDR_INTERCEPTOR(xdr_hyper, long long)
3670 XDR_INTERCEPTOR(xdr_u_hyper, unsigned long long)
3671 XDR_INTERCEPTOR(xdr_longlong_t, long long)
3672 XDR_INTERCEPTOR(xdr_u_longlong_t, unsigned long long)
3673 XDR_INTERCEPTOR(xdr_int8_t, u8)
3674 XDR_INTERCEPTOR(xdr_uint8_t, u8)
3675 XDR_INTERCEPTOR(xdr_int16_t, u16)
3676 XDR_INTERCEPTOR(xdr_uint16_t, u16)
3677 XDR_INTERCEPTOR(xdr_int32_t, u32)
3678 XDR_INTERCEPTOR(xdr_uint32_t, u32)
3679 XDR_INTERCEPTOR(xdr_int64_t, u64)
3680 XDR_INTERCEPTOR(xdr_uint64_t, u64)
3681 XDR_INTERCEPTOR(xdr_quad_t, long long)
3682 XDR_INTERCEPTOR(xdr_u_quad_t, unsigned long long)
3683 XDR_INTERCEPTOR(xdr_bool, bool)
3684 XDR_INTERCEPTOR(xdr_enum, int)
3685 XDR_INTERCEPTOR(xdr_char, char)
3686 XDR_INTERCEPTOR(xdr_u_char, unsigned char)
3687 XDR_INTERCEPTOR(xdr_float, float)
3688 XDR_INTERCEPTOR(xdr_double, double)
3689
3690 // FIXME: intercept xdr_array, opaque, union, vector, reference, pointer,
3691 // wrapstring, sizeof
3692
3693 INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep,
3694             unsigned maxsize) {
3695   void *ctx;
3696   COMMON_INTERCEPTOR_ENTER(ctx, xdr_bytes, xdrs, p, sizep, maxsize);
3697   if (p && sizep && xdrs->x_op == __sanitizer_XDR_ENCODE) {
3698     COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));
3699     COMMON_INTERCEPTOR_READ_RANGE(ctx, sizep, sizeof(*sizep));
3700     COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, *sizep);
3701   }
3702   int res = REAL(xdr_bytes)(xdrs, p, sizep, maxsize);
3703   if (p && sizep && xdrs->x_op == __sanitizer_XDR_DECODE) {
3704     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
3705     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizep, sizeof(*sizep));
3706     if (res && *p && *sizep) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, *sizep);
3707   }
3708   return res;
3709 }
3710
3711 INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p,
3712             unsigned maxsize) {
3713   void *ctx;
3714   COMMON_INTERCEPTOR_ENTER(ctx, xdr_string, xdrs, p, maxsize);
3715   if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) {
3716     COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p));
3717     COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, REAL(strlen)(*p) + 1);
3718   }
3719   int res = REAL(xdr_string)(xdrs, p, maxsize);
3720   if (p && xdrs->x_op == __sanitizer_XDR_DECODE) {
3721     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
3722     if (res && *p)
3723       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1);
3724   }
3725   return res;
3726 }
3727
3728 #define INIT_XDR                               \
3729   COMMON_INTERCEPT_FUNCTION(xdrmem_create);    \
3730   COMMON_INTERCEPT_FUNCTION(xdrstdio_create);  \
3731   COMMON_INTERCEPT_FUNCTION(xdr_short);        \
3732   COMMON_INTERCEPT_FUNCTION(xdr_u_short);      \
3733   COMMON_INTERCEPT_FUNCTION(xdr_int);          \
3734   COMMON_INTERCEPT_FUNCTION(xdr_u_int);        \
3735   COMMON_INTERCEPT_FUNCTION(xdr_long);         \
3736   COMMON_INTERCEPT_FUNCTION(xdr_u_long);       \
3737   COMMON_INTERCEPT_FUNCTION(xdr_hyper);        \
3738   COMMON_INTERCEPT_FUNCTION(xdr_u_hyper);      \
3739   COMMON_INTERCEPT_FUNCTION(xdr_longlong_t);   \
3740   COMMON_INTERCEPT_FUNCTION(xdr_u_longlong_t); \
3741   COMMON_INTERCEPT_FUNCTION(xdr_int8_t);       \
3742   COMMON_INTERCEPT_FUNCTION(xdr_uint8_t);      \
3743   COMMON_INTERCEPT_FUNCTION(xdr_int16_t);      \
3744   COMMON_INTERCEPT_FUNCTION(xdr_uint16_t);     \
3745   COMMON_INTERCEPT_FUNCTION(xdr_int32_t);      \
3746   COMMON_INTERCEPT_FUNCTION(xdr_uint32_t);     \
3747   COMMON_INTERCEPT_FUNCTION(xdr_int64_t);      \
3748   COMMON_INTERCEPT_FUNCTION(xdr_uint64_t);     \
3749   COMMON_INTERCEPT_FUNCTION(xdr_quad_t);       \
3750   COMMON_INTERCEPT_FUNCTION(xdr_u_quad_t);     \
3751   COMMON_INTERCEPT_FUNCTION(xdr_bool);         \
3752   COMMON_INTERCEPT_FUNCTION(xdr_enum);         \
3753   COMMON_INTERCEPT_FUNCTION(xdr_char);         \
3754   COMMON_INTERCEPT_FUNCTION(xdr_u_char);       \
3755   COMMON_INTERCEPT_FUNCTION(xdr_float);        \
3756   COMMON_INTERCEPT_FUNCTION(xdr_double);       \
3757   COMMON_INTERCEPT_FUNCTION(xdr_bytes);        \
3758   COMMON_INTERCEPT_FUNCTION(xdr_string);
3759 #else
3760 #define INIT_XDR
3761 #endif  // SANITIZER_INTERCEPT_XDR
3762
3763 #if SANITIZER_INTERCEPT_TSEARCH
3764 INTERCEPTOR(void *, tsearch, void *key, void **rootp,
3765             int (*compar)(const void *, const void *)) {
3766   void *ctx;
3767   COMMON_INTERCEPTOR_ENTER(ctx, tsearch, key, rootp, compar);
3768   void *res = REAL(tsearch)(key, rootp, compar);
3769   if (res && *(void **)res == key)
3770     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(void *));
3771   return res;
3772 }
3773 #define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch);
3774 #else
3775 #define INIT_TSEARCH
3776 #endif
3777
3778 #if SANITIZER_INTERCEPT_LIBIO_INTERNALS || SANITIZER_INTERCEPT_FOPEN || \
3779     SANITIZER_INTERCEPT_OPEN_MEMSTREAM
3780 void unpoison_file(__sanitizer_FILE *fp) {
3781 #if SANITIZER_HAS_STRUCT_FILE
3782   COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp, sizeof(*fp));
3783   if (fp->_IO_read_base && fp->_IO_read_base < fp->_IO_read_end)
3784     COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_read_base,
3785                                         fp->_IO_read_end - fp->_IO_read_base);
3786 #endif  // SANITIZER_HAS_STRUCT_FILE
3787 }
3788 #endif
3789
3790 #if SANITIZER_INTERCEPT_LIBIO_INTERNALS
3791 // These guys are called when a .c source is built with -O2.
3792 INTERCEPTOR(int, __uflow, __sanitizer_FILE *fp) {
3793   void *ctx;
3794   COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp);
3795   int res = REAL(__uflow)(fp);
3796   unpoison_file(fp);
3797   return res;
3798 }
3799 INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) {
3800   void *ctx;
3801   COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp);
3802   int res = REAL(__underflow)(fp);
3803   unpoison_file(fp);
3804   return res;
3805 }
3806 INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) {
3807   void *ctx;
3808   COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch);
3809   int res = REAL(__overflow)(fp, ch);
3810   unpoison_file(fp);
3811   return res;
3812 }
3813 INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) {
3814   void *ctx;
3815   COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp);
3816   int res = REAL(__wuflow)(fp);
3817   unpoison_file(fp);
3818   return res;
3819 }
3820 INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) {
3821   void *ctx;
3822   COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp);
3823   int res = REAL(__wunderflow)(fp);
3824   unpoison_file(fp);
3825   return res;
3826 }
3827 INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) {
3828   void *ctx;
3829   COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch);
3830   int res = REAL(__woverflow)(fp, ch);
3831   unpoison_file(fp);
3832   return res;
3833 }
3834 #define INIT_LIBIO_INTERNALS               \
3835   COMMON_INTERCEPT_FUNCTION(__uflow);      \
3836   COMMON_INTERCEPT_FUNCTION(__underflow);  \
3837   COMMON_INTERCEPT_FUNCTION(__overflow);   \
3838   COMMON_INTERCEPT_FUNCTION(__wuflow);     \
3839   COMMON_INTERCEPT_FUNCTION(__wunderflow); \
3840   COMMON_INTERCEPT_FUNCTION(__woverflow);
3841 #else
3842 #define INIT_LIBIO_INTERNALS
3843 #endif
3844
3845 #if SANITIZER_INTERCEPT_FOPEN
3846 INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) {
3847   void *ctx;
3848   COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode);
3849   COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3850   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
3851   __sanitizer_FILE *res = REAL(fopen)(path, mode);
3852   COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
3853   if (res) unpoison_file(res);
3854   return res;
3855 }
3856 INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) {
3857   void *ctx;
3858   COMMON_INTERCEPTOR_ENTER(ctx, fdopen, fd, mode);
3859   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
3860   __sanitizer_FILE *res = REAL(fdopen)(fd, mode);
3861   if (res) unpoison_file(res);
3862   return res;
3863 }
3864 INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode,
3865             __sanitizer_FILE *fp) {
3866   void *ctx;
3867   COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp);
3868   COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3869   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
3870   COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
3871   __sanitizer_FILE *res = REAL(freopen)(path, mode, fp);
3872   COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
3873   if (res) unpoison_file(res);
3874   return res;
3875 }
3876 #define INIT_FOPEN                   \
3877   COMMON_INTERCEPT_FUNCTION(fopen);  \
3878   COMMON_INTERCEPT_FUNCTION(fdopen); \
3879   COMMON_INTERCEPT_FUNCTION(freopen);
3880 #else
3881 #define INIT_FOPEN
3882 #endif
3883
3884 #if SANITIZER_INTERCEPT_FOPEN64
3885 INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) {
3886   void *ctx;
3887   COMMON_INTERCEPTOR_ENTER(ctx, fopen64, path, mode);
3888   COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3889   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
3890   __sanitizer_FILE *res = REAL(fopen64)(path, mode);
3891   COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
3892   if (res) unpoison_file(res);
3893   return res;
3894 }
3895 INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode,
3896             __sanitizer_FILE *fp) {
3897   void *ctx;
3898   COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp);
3899   COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
3900   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
3901   COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
3902   __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp);
3903   COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path);
3904   if (res) unpoison_file(res);
3905   return res;
3906 }
3907 #define INIT_FOPEN64                  \
3908   COMMON_INTERCEPT_FUNCTION(fopen64); \
3909   COMMON_INTERCEPT_FUNCTION(freopen64);
3910 #else
3911 #define INIT_FOPEN64
3912 #endif
3913
3914 #if SANITIZER_INTERCEPT_OPEN_MEMSTREAM
3915 INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) {
3916   void *ctx;
3917   COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc);
3918   __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc);
3919   if (res) {
3920     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
3921     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
3922     unpoison_file(res);
3923     FileMetadata file = {ptr, sizeloc};
3924     SetInterceptorMetadata(res, file);
3925   }
3926   return res;
3927 }
3928 INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr,
3929             SIZE_T *sizeloc) {
3930   void *ctx;
3931   COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc);
3932   __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc);
3933   if (res) {
3934     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
3935     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
3936     unpoison_file(res);
3937     FileMetadata file = {(char **)ptr, sizeloc};
3938     SetInterceptorMetadata(res, file);
3939   }
3940   return res;
3941 }
3942 INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size,
3943             const char *mode) {
3944   void *ctx;
3945   COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode);
3946   __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode);
3947   if (res) unpoison_file(res);
3948   return res;
3949 }
3950 #define INIT_OPEN_MEMSTREAM                   \
3951   COMMON_INTERCEPT_FUNCTION(open_memstream);  \
3952   COMMON_INTERCEPT_FUNCTION(open_wmemstream); \
3953   COMMON_INTERCEPT_FUNCTION(fmemopen);
3954 #else
3955 #define INIT_OPEN_MEMSTREAM
3956 #endif
3957
3958 #if SANITIZER_INTERCEPT_OBSTACK
3959 static void initialize_obstack(__sanitizer_obstack *obstack) {
3960   COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack));
3961   if (obstack->chunk)
3962     COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk,
3963                                         sizeof(*obstack->chunk));
3964 }
3965
3966 INTERCEPTOR(int, _obstack_begin_1, __sanitizer_obstack *obstack, int sz,
3967             int align, void *(*alloc_fn)(uptr arg, uptr sz),
3968             void (*free_fn)(uptr arg, void *p)) {
3969   void *ctx;
3970   COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn,
3971                            free_fn);
3972   int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn);
3973   if (res) initialize_obstack(obstack);
3974   return res;
3975 }
3976 INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz,
3977             int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) {
3978   void *ctx;
3979   COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn,
3980                            free_fn);
3981   int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn);
3982   if (res) initialize_obstack(obstack);
3983   return res;
3984 }
3985 INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) {
3986   void *ctx;
3987   COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length);
3988   REAL(_obstack_newchunk)(obstack, length);
3989   if (obstack->chunk)
3990     COMMON_INTERCEPTOR_INITIALIZE_RANGE(
3991         obstack->chunk, obstack->next_free - (char *)obstack->chunk);
3992 }
3993 #define INIT_OBSTACK                           \
3994   COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \
3995   COMMON_INTERCEPT_FUNCTION(_obstack_begin);   \
3996   COMMON_INTERCEPT_FUNCTION(_obstack_newchunk);
3997 #else
3998 #define INIT_OBSTACK
3999 #endif
4000
4001 #if SANITIZER_INTERCEPT_FFLUSH
4002 INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) {
4003   void *ctx;
4004   COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp);
4005   int res = REAL(fflush)(fp);
4006   // FIXME: handle fp == NULL
4007   if (fp) {
4008     const FileMetadata *m = GetInterceptorMetadata(fp);
4009     if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
4010   }
4011   return res;
4012 }
4013 #define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush);
4014 #else
4015 #define INIT_FFLUSH
4016 #endif
4017
4018 #if SANITIZER_INTERCEPT_FCLOSE
4019 INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) {
4020   void *ctx;
4021   COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp);
4022   if (fp) {
4023     COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
4024     const FileMetadata *m = GetInterceptorMetadata(fp);
4025     if (m) {
4026       COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
4027       DeleteInterceptorMetadata(fp);
4028     }
4029   }
4030   return REAL(fclose)(fp);
4031 }
4032 #define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose);
4033 #else
4034 #define INIT_FCLOSE
4035 #endif
4036
4037 static void InitializeCommonInterceptors() {
4038   static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
4039   interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
4040
4041   INIT_TEXTDOMAIN;
4042   INIT_STRCMP;
4043   INIT_STRNCMP;
4044   INIT_STRCASECMP;
4045   INIT_STRNCASECMP;
4046   INIT_MEMCHR;
4047   INIT_MEMRCHR;
4048   INIT_READ;
4049   INIT_PREAD;
4050   INIT_PREAD64;
4051   INIT_READV;
4052   INIT_PREADV;
4053   INIT_PREADV64;
4054   INIT_WRITE;
4055   INIT_PWRITE;
4056   INIT_PWRITE64;
4057   INIT_WRITEV;
4058   INIT_PWRITEV;
4059   INIT_PWRITEV64;
4060   INIT_PRCTL;
4061   INIT_LOCALTIME_AND_FRIENDS;
4062   INIT_STRPTIME;
4063   INIT_SCANF;
4064   INIT_ISOC99_SCANF;
4065   INIT_PRINTF;
4066   INIT_ISOC99_PRINTF;
4067   INIT_FREXP;
4068   INIT_FREXPF_FREXPL;
4069   INIT_GETPWNAM_AND_FRIENDS;
4070   INIT_GETPWNAM_R_AND_FRIENDS;
4071   INIT_GETPWENT;
4072   INIT_FGETPWENT;
4073   INIT_GETPWENT_R;
4074   INIT_SETPWENT;
4075   INIT_CLOCK_GETTIME;
4076   INIT_GETITIMER;
4077   INIT_TIME;
4078   INIT_GLOB;
4079   INIT_WAIT;
4080   INIT_WAIT4;
4081   INIT_INET;
4082   INIT_PTHREAD_GETSCHEDPARAM;
4083   INIT_GETADDRINFO;
4084   INIT_GETNAMEINFO;
4085   INIT_GETSOCKNAME;
4086   INIT_GETHOSTBYNAME;
4087   INIT_GETHOSTBYNAME_R;
4088   INIT_GETSOCKOPT;
4089   INIT_ACCEPT;
4090   INIT_ACCEPT4;
4091   INIT_MODF;
4092   INIT_RECVMSG;
4093   INIT_GETPEERNAME;
4094   INIT_IOCTL;
4095   INIT_INET_ATON;
4096   INIT_SYSINFO;
4097   INIT_READDIR;
4098   INIT_READDIR64;
4099   INIT_PTRACE;
4100   INIT_SETLOCALE;
4101   INIT_GETCWD;
4102   INIT_GET_CURRENT_DIR_NAME;
4103   INIT_STRTOIMAX;
4104   INIT_MBSTOWCS;
4105   INIT_MBSNRTOWCS;
4106   INIT_WCSTOMBS;
4107   INIT_WCSNRTOMBS;
4108   INIT_TCGETATTR;
4109   INIT_REALPATH;
4110   INIT_CANONICALIZE_FILE_NAME;
4111   INIT_CONFSTR;
4112   INIT_SCHED_GETAFFINITY;
4113   INIT_STRERROR;
4114   INIT_STRERROR_R;
4115   INIT_XPG_STRERROR_R;
4116   INIT_SCANDIR;
4117   INIT_SCANDIR64;
4118   INIT_GETGROUPS;
4119   INIT_POLL;
4120   INIT_PPOLL;
4121   INIT_WORDEXP;
4122   INIT_SIGWAIT;
4123   INIT_SIGWAITINFO;
4124   INIT_SIGTIMEDWAIT;
4125   INIT_SIGSETOPS;
4126   INIT_SIGPENDING;
4127   INIT_SIGPROCMASK;
4128   INIT_BACKTRACE;
4129   INIT__EXIT;
4130   INIT_PTHREAD_MUTEX_LOCK;
4131   INIT_PTHREAD_MUTEX_UNLOCK;
4132   INIT_GETMNTENT;
4133   INIT_GETMNTENT_R;
4134   INIT_STATFS;
4135   INIT_STATFS64;
4136   INIT_STATVFS;
4137   INIT_STATVFS64;
4138   INIT_INITGROUPS;
4139   INIT_ETHER;
4140   INIT_ETHER_R;
4141   INIT_SHMCTL;
4142   INIT_RANDOM_R;
4143   INIT_PTHREAD_ATTR_GET;
4144   INIT_PTHREAD_ATTR_GETINHERITSCHED;
4145   INIT_PTHREAD_ATTR_GETAFFINITY_NP;
4146   INIT_TMPNAM;
4147   INIT_TMPNAM_R;
4148   INIT_TEMPNAM;
4149   INIT_PTHREAD_SETNAME_NP;
4150   INIT_SINCOS;
4151   INIT_REMQUO;
4152   INIT_LGAMMA;
4153   INIT_LGAMMA_R;
4154   INIT_DRAND48_R;
4155   INIT_RAND_R;
4156   INIT_GETLINE;
4157   INIT_ICONV;
4158   INIT_TIMES;
4159   INIT_TLS_GET_ADDR;
4160   INIT_LISTXATTR;
4161   INIT_GETXATTR;
4162   INIT_GETRESID;
4163   INIT_GETIFADDRS;
4164   INIT_IF_INDEXTONAME;
4165   INIT_CAPGET;
4166   INIT_AEABI_MEM;
4167   INIT___BZERO;
4168   INIT_FTIME;
4169   INIT_XDR;
4170   INIT_TSEARCH;
4171   INIT_LIBIO_INTERNALS;
4172   INIT_FOPEN;
4173   INIT_FOPEN64;
4174   INIT_OPEN_MEMSTREAM;
4175   INIT_OBSTACK;
4176   INIT_FFLUSH;
4177   INIT_FCLOSE;
4178 }