lib/msan/msan_interceptors.cpp

136   SIZE_T res = REAL(fread_unlocked)(ptr, size, nmemb, file);
137   if (res > 0)
138     __msan_unpoison(ptr, res *size);
139   return res;
157   void *res = REAL(memccpy)(dest, src, c, n);
158   CHECK(!res || (res >= dest && res <= (char *)dest + n));
159   SIZE_T sz = res ? (char *)res - (char *)dest : n;
162   return res;
172   int res = msan_posix_memalign(memptr, alignment, size, &stack);
173   if (!res)
175   return res;
290   char *res = REAL(strcpy)(dest, src);
292   return res;
301   char *res = REAL(strncpy)(dest, src, n);
304   return res;
313   char *res = REAL(stpcpy)(dest, src);
315   return res;
329   char *res = REAL(strdup)(src);
330   CopyShadowAndOrigin(res, src, n + 1, &stack);
331   return res;
340   char *res = REAL(__strdup)(src);
341   CopyShadowAndOrigin(res, src, n + 1, &stack);
342   return res;
352   char *res = REAL(gcvt)(number, ndigit, buf);
355   return res;
369   char *res = REAL(strcat)(dest, src);
371   return res;
380   char *res = REAL(strncat)(dest, src, n);
383   return res;
390   ret_type res = REAL(func)(__VA_ARGS__);           \
392   return res;
473   int res = REAL(vswprintf)(str, size, format, ap);
474   if (res >= 0) {
475     __msan_unpoison(str, 4 * (res + 1));
477   return res;
484   int res = vswprintf(str, size, format, ap);
486   return res;
492   ret_type res = REAL(func)(s, __VA_ARGS__);                         \
493   if (s) __msan_unpoison(s, sizeof(char_type) * (res + 1));          \
494   return res;
541   int res = REAL(mbtowc)(dest, src, n);
542   if (res != -1 && dest) __msan_unpoison(dest, sizeof(wchar_t));
543   return res;
549   SIZE_T res = REAL(mbrtowc)(dest, src, n, ps);
550   if (res != (SIZE_T)-1 && dest) __msan_unpoison(dest, sizeof(wchar_t));
551   return res;
558   wchar_t *res = REAL(wmemcpy)(dest, src, n);
560   return res;
567   wchar_t *res = REAL(wmempcpy)(dest, src, n);
569   return res;
579   wchar_t *res = REAL(wmemset)(s, c, n);
581   return res;
587   wchar_t *res = REAL(wmemmove)(dest, src, n);
589   return res;
594   int res = REAL(wcscmp)(s1, s2);
595   return res;
600   int res = REAL(gettimeofday)(tv, tz);
605   return res;
611   char *res = REAL(fcvt)(x, a, b, c);
614   if (res) __msan_unpoison(res, REAL(strlen)(res) + 1);
615   return res;
626   char *res = REAL(getenv)(name);
627   if (res) __msan_unpoison(res, REAL(strlen)(res) + 1);
628   return res;
646   int res = REAL(setenv)(name, value, overwrite);
647   if (!res) UnpoisonEnviron();
648   return res;
653   int res = REAL(putenv)(string);
654   if (!res) UnpoisonEnviron();
655   return res;
661   int res = REAL(fstat)(fd, buf);
662   if (!res)
664   return res;
674   int res = REAL(__fxstat)(magic, fd, buf);
675   if (!res)
677   return res;
687   int res = REAL(__fxstat64)(magic, fd, buf);
688   if (!res)
690   return res;
700   int res = REAL(fstatat)(fd, pathname, buf, flags);
701   if (!res) __msan_unpoison(buf, __sanitizer::struct_stat_sz);
702   return res;
709   int res = REAL(__fxstatat)(magic, fd, pathname, buf, flags);
710   if (!res) __msan_unpoison(buf, __sanitizer::struct_stat_sz);
711   return res;
720   int res = REAL(__fxstatat64)(magic, fd, pathname, buf, flags);
721   if (!res) __msan_unpoison(buf, __sanitizer::struct_stat64_sz);
722   return res;
733   int res = REAL(pipe)(pipefd);
734   if (!res)
736   return res;
741   int res = REAL(pipe2)(pipefd, flags);
742   if (!res)
744   return res;
749   int res = REAL(socketpair)(domain, type, protocol, sv);
750   if (!res)
752   return res;
758   char *res = REAL(fgets_unlocked)(s, size, stream);
759   if (res)
761   return res;
772   int res = REAL(func)(resource, rlim);                   \
773   if (!res)                                               \
775   return res
789   int res = REAL(getrlimit64)(resource, rlim);
790   if (!res) __msan_unpoison(rlim, __sanitizer::struct_rlimit64_sz);
791   return res;
800   int res = REAL(prlimit)(pid, resource, new_rlimit, old_rlimit);
801   if (!res) __msan_unpoison(old_rlimit, __sanitizer::struct_rlimit_sz);
802   return res;
811   int res = REAL(prlimit64)(pid, resource, new_rlimit, old_rlimit);
812   if (!res) __msan_unpoison(old_rlimit, __sanitizer::struct_rlimit64_sz);
813   return res;
834   int res = REAL(__xuname)(size, utsname);
835   if (!res)
837   return res;
843   int res = REAL(uname)(utsname);
844   if (!res)
846   return res;
853   int res = REAL(gethostname)(name, len);
854   if (!res) {
860   return res;
867   int res = REAL(epoll_wait)(epfd, events, maxevents, timeout);
868   if (res > 0) {
869     __msan_unpoison(events, __sanitizer::struct_epoll_event_sz * res);
871   return res;
882   int res = REAL(epoll_pwait)(epfd, events, maxevents, timeout, sigmask);
883   if (res > 0) {
884     __msan_unpoison(events, __sanitizer::struct_epoll_event_sz * res);
886   return res;
964   void *res = real_mmap(addr, length, prot, flags, fd, offset);
965   if (res != (void *)-1) __msan_unpoison(res, RoundUpTo(length, GetPageSize()));
966   return res;
971   int res = REAL(getrusage)(who, usage);
972   if (res == 0) {
975   return res;
1052   int res = REAL(pthread_create)(th, attr, MsanThreadStartFunc, t);
1056   if (!res) {
1059   return res;
1066   int res = REAL(pthread_key_create)(key, dtor);
1067   if (!res && key)
1069   return res;
1080   int res = REAL(pthread_join)(th, retval);
1081   if (!res && retval)
1083   return res;
1167   int res;
1174     res = REAL(__cxa_atexit)((void (*)(void *a))MSanAtExitWrapper, 0, 0);
1175     if (!res) {
1179     res = REAL(__cxa_atexit)(MSanCxaAtExitWrapper, r, dso);
1181   return res;
1209   int res = REAL(openpty)(aparent, aworker, name, termp, winp);
1210   if (!res) {
1214   return res;
1228   int res = REAL(forkpty)(aparent, name, termp, winp);
1229   if (res != -1)
1231   return res;
1378   int res;
1396     res = REAL(SIGACTION_SYMNAME)(signo, pnew_act, oldact);
1397     if (res == 0 && oldact) {
1404     res = REAL(SIGACTION_SYMNAME)(signo, act, oldact);
1407   if (res == 0 && oldact) {
1410   return res;
1447   int res = REAL(dladdr)(addr, info);
1448   if (res != 0) {
1455   return res;
1461   char *res = REAL(dlerror)(fake);
1462   if (res) __msan_unpoison(res, REAL(strlen)(res) + 1);
1463   return res;
1492     int res = REAL(shmctl)(shmid, shmctl_ipc_stat, &ds);
1493     if (!res) {
1506   int res = REAL(dl_iterate_phdr)(msan_dl_iterate_phdr_cb, (void *)&cbdata);
1507   return res;
1513   wchar_t *res = REAL(wcschr)(s, wc, ps);
1514   return res;
1521   wchar_t *res = REAL(wcscpy)(dest, src);
1524   return res;
1532   wchar_t *res = REAL(wcsncpy)(dest, src, n);
1535   return res;
1568   void *res = REAL(memcpy)(dest, src, n);
1570   return res;
1577   void *res = REAL(memset)(s, c, n);
1579   return res;
1587   void *res = REAL(memmove)(dest, src, n);
1589   return res;