1 //===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===//
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
6 //===----------------------------------------------------------------------===//
8 // Common function interceptors for tools like AddressSanitizer,
9 // ThreadSanitizer, MemorySanitizer, etc.
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"
36 #if SANITIZER_WINDOWS && !defined(va_copy)
37 #define va_copy(dst, src) ((dst) = (src))
40 #ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE
41 #define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {}
44 #ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM
45 #define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {}
48 #ifndef COMMON_INTERCEPTOR_FD_ACCESS
49 #define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {}
52 #ifndef COMMON_INTERCEPTOR_MUTEX_LOCK
53 #define COMMON_INTERCEPTOR_MUTEX_LOCK(ctx, m) {}
56 #ifndef COMMON_INTERCEPTOR_MUTEX_UNLOCK
57 #define COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m) {}
60 #ifndef COMMON_INTERCEPTOR_MUTEX_REPAIR
61 #define COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m) {}
64 #ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG
65 #define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg))
68 #ifndef COMMON_INTERCEPTOR_FILE_OPEN
69 #define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {}
72 #ifndef COMMON_INTERCEPTOR_FILE_CLOSE
73 #define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {}
77 // For open_memstream().
82 struct CommonInterceptorMetadata {
92 typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap;
94 static MetadataHashMap *interceptor_metadata_map;
97 UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr,
98 const FileMetadata &file) {
99 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr);
101 h->type = CommonInterceptorMetadata::CIMT_FILE;
105 UNUSED static const FileMetadata *GetInterceptorMetadata(
106 __sanitizer_FILE *addr) {
107 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr,
112 CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE);
119 UNUSED static void DeleteInterceptorMetadata(void *addr) {
120 MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true);
123 #endif // SI_NOT_WINDOWS
125 #if SANITIZER_INTERCEPT_TEXTDOMAIN
126 INTERCEPTOR(char*, textdomain, const char *domainname) {
128 COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname);
129 char* domain = REAL(textdomain)(domainname);
131 COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, REAL(strlen)(domain) + 1);
135 #define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain)
137 #define INIT_TEXTDOMAIN
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;
145 INTERCEPTOR(int, strcmp, const char *s1, const char *s2) {
147 COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2);
148 unsigned char c1, c2;
151 c1 = (unsigned char)s1[i];
152 c2 = (unsigned char)s2[i];
153 if (c1 != c2 || c1 == '\0') break;
155 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, i + 1);
156 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, i + 1);
157 return CharCmpX(c1, c2);
160 INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr size) {
162 COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size);
163 unsigned char c1 = 0, c2 = 0;
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;
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);
175 #define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp)
176 #define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp)
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;
189 INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) {
191 COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2);
192 unsigned char c1 = 0, c2 = 0;
195 c1 = (unsigned char)s1[i];
196 c2 = (unsigned char)s2[i];
197 if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break;
199 COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, i + 1);
200 COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, i + 1);
201 return CharCaseCmp(c1, c2);
204 INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T n) {
206 COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, n);
207 unsigned char c1 = 0, c2 = 0;
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;
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);
219 #define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp)
220 #define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp)
222 #define INIT_STRCASECMP
223 #define INIT_STRNCASECMP
226 #if SANITIZER_INTERCEPT_MEMCHR
227 INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) {
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);
236 #define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr)
241 #if SANITIZER_INTERCEPT_MEMRCHR
242 INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) {
244 COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n);
245 COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n);
246 return REAL(memrchr)(s, c, n);
249 #define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr)
254 #if SANITIZER_INTERCEPT_FREXP
255 INTERCEPTOR(double, frexp, double x, int *exp) {
257 COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp);
258 double res = REAL(frexp)(x, exp);
259 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
263 #define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp);
266 #endif // SANITIZER_INTERCEPT_FREXP
268 #if SANITIZER_INTERCEPT_FREXPF_FREXPL
269 INTERCEPTOR(float, frexpf, float x, int *exp) {
271 COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp);
272 float res = REAL(frexpf)(x, exp);
273 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp));
277 INTERCEPTOR(long double, frexpl, long double x, int *exp) {
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));
285 #define INIT_FREXPF_FREXPL \
286 COMMON_INTERCEPT_FUNCTION(frexpf); \
287 COMMON_INTERCEPT_FUNCTION(frexpl)
289 #define INIT_FREXPF_FREXPL
290 #endif // SANITIZER_INTERCEPT_FREXPF_FREXPL
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);
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);
313 #if SANITIZER_INTERCEPT_READ
314 INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
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);
323 #define INIT_READ COMMON_INTERCEPT_FUNCTION(read)
328 #if SANITIZER_INTERCEPT_PREAD
329 INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
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);
338 #define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread)
343 #if SANITIZER_INTERCEPT_PREAD64
344 INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
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);
353 #define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64)
358 #if SANITIZER_INTERCEPT_READV
359 INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov,
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);
369 #define INIT_READV COMMON_INTERCEPT_FUNCTION(readv)
374 #if SANITIZER_INTERCEPT_PREADV
375 INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt,
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);
385 #define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv)
390 #if SANITIZER_INTERCEPT_PREADV64
391 INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt,
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);
401 #define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64)
403 #define INIT_PREADV64
406 #if SANITIZER_INTERCEPT_WRITE
407 INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) {
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);
417 #define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write)
422 #if SANITIZER_INTERCEPT_PWRITE
423 INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) {
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);
432 #define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite)
437 #if SANITIZER_INTERCEPT_PWRITE64
438 INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count,
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);
448 #define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64)
450 #define INIT_PWRITE64
453 #if SANITIZER_INTERCEPT_WRITEV
454 INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov,
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);
464 #define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev)
469 #if SANITIZER_INTERCEPT_PWRITEV
470 INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt,
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);
480 #define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev)
485 #if SANITIZER_INTERCEPT_PWRITEV64
486 INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt,
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);
496 #define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64)
498 #define INIT_PWRITEV64
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
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) {
511 internal_strncpy(buff, (char *)arg2, 15);
513 COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff);
517 #define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl)
520 #endif // SANITIZER_INTERCEPT_PRCTL
522 #if SANITIZER_INTERCEPT_TIME
523 INTERCEPTOR(unsigned long, time, unsigned long *t) {
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));
532 #define INIT_TIME COMMON_INTERCEPT_FUNCTION(time);
535 #endif // SANITIZER_INTERCEPT_TIME
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));
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);
547 INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) {
549 COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep);
550 __sanitizer_tm *res = REAL(localtime)(timep);
552 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
553 unpoison_tm(ctx, res);
557 INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) {
559 COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result);
560 __sanitizer_tm *res = REAL(localtime_r)(timep, result);
562 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
563 unpoison_tm(ctx, res);
567 INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) {
569 COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep);
570 __sanitizer_tm *res = REAL(gmtime)(timep);
572 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
573 unpoison_tm(ctx, res);
577 INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) {
579 COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result);
580 __sanitizer_tm *res = REAL(gmtime_r)(timep, result);
582 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
583 unpoison_tm(ctx, res);
587 INTERCEPTOR(char *, ctime, unsigned long *timep) {
589 COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep);
590 char *res = REAL(ctime)(timep);
592 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
593 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
597 INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) {
599 COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result);
600 char *res = REAL(ctime_r)(timep, result);
602 COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep));
603 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
607 INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) {
609 COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm);
610 char *res = REAL(asctime)(tm);
612 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
613 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
617 INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) {
619 COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result);
620 char *res = REAL(asctime_r)(tm, result);
622 COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm));
623 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
627 INTERCEPTOR(long, mktime, __sanitizer_tm *tm) {
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);
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);
652 #define INIT_LOCALTIME_AND_FRIENDS
653 #endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS
655 #if SANITIZER_INTERCEPT_STRPTIME
656 INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) {
658 COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm);
660 COMMON_INTERCEPTOR_READ_RANGE(ctx, format, REAL(strlen)(format) + 1);
661 char *res = REAL(strptime)(s, format, tm);
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
667 if (tm) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm));
671 #define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime);
673 #define INIT_STRPTIME
676 #if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF
677 #include "sanitizer_common_interceptors_format.inc"
679 #define FORMAT_INTERCEPTOR_IMPL(name, vname, ...) \
683 va_start(ap, format); \
684 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \
685 int res = WRAP(vname)(__VA_ARGS__, ap); \
692 #if SANITIZER_INTERCEPT_SCANF
694 #define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \
697 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
700 int res = REAL(vname)(__VA_ARGS__); \
702 scanf_common(ctx, res, allowGnuMalloc, format, aq); \
707 INTERCEPTOR(int, vscanf, const char *format, va_list ap)
708 VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap)
710 INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap)
711 VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap)
713 INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap)
714 VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap)
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)
720 INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format,
722 VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap)
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
728 INTERCEPTOR(int, scanf, const char *format, ...)
729 FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format)
731 INTERCEPTOR(int, fscanf, void *stream, const char *format, ...)
732 FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format)
734 INTERCEPTOR(int, sscanf, const char *str, const char *format, ...)
735 FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format)
737 #if SANITIZER_INTERCEPT_ISOC99_SCANF
738 INTERCEPTOR(int, __isoc99_scanf, const char *format, ...)
739 FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format)
741 INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...)
742 FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format)
744 INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...)
745 FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format)
750 #if SANITIZER_INTERCEPT_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);
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);
771 #define INIT_ISOC99_SCANF
774 #if SANITIZER_INTERCEPT_PRINTF
776 #define VPRINTF_INTERCEPTOR_ENTER(vname, ...) \
778 COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \
782 #define VPRINTF_INTERCEPTOR_RETURN() \
785 #define VPRINTF_INTERCEPTOR_IMPL(vname, ...) \
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(); \
795 #define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...) \
797 VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__) \
798 if (common_flags()->check_printf) { \
799 printf_common(ctx, format, aq); \
801 int res = REAL(vname)(str, __VA_ARGS__); \
803 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1); \
805 VPRINTF_INTERCEPTOR_RETURN(); \
809 #define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...) \
811 VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__) \
812 if (common_flags()->check_printf) { \
813 printf_common(ctx, format, aq); \
815 int res = REAL(vname)(str, size, __VA_ARGS__); \
817 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1))); \
819 VPRINTF_INTERCEPTOR_RETURN(); \
823 #define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...) \
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); \
830 int res = REAL(vname)(strp, __VA_ARGS__); \
832 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1); \
834 VPRINTF_INTERCEPTOR_RETURN(); \
838 INTERCEPTOR(int, vprintf, const char *format, va_list ap)
839 VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap)
841 INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format,
843 VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap)
845 INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format,
847 VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap)
849 INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap)
850 VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap)
852 INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap)
853 VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap)
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)
859 INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream,
860 const char *format, va_list ap)
861 VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap)
863 INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format,
865 VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap)
867 INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format,
869 VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format,
872 #endif // SANITIZER_INTERCEPT_ISOC99_PRINTF
874 INTERCEPTOR(int, printf, const char *format, ...)
875 FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format)
877 INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...)
878 FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format)
880 INTERCEPTOR(int, sprintf, char *str, const char *format, ...) // NOLINT
881 FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format) // NOLINT
883 INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...)
884 FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format)
886 INTERCEPTOR(int, asprintf, char **strp, const char *format, ...)
887 FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format)
889 #if SANITIZER_INTERCEPT_ISOC99_PRINTF
890 INTERCEPTOR(int, __isoc99_printf, const char *format, ...)
891 FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format)
893 INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format,
895 FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format)
897 INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...)
898 FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format)
900 INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size,
901 const char *format, ...)
902 FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size,
905 #endif // SANITIZER_INTERCEPT_ISOC99_PRINTF
907 #endif // SANITIZER_INTERCEPT_PRINTF
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);
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);
936 #define INIT_ISOC99_PRINTF
939 #if SANITIZER_INTERCEPT_IOCTL
940 #include "sanitizer_common_interceptors_ioctl.inc"
941 INTERCEPTOR(int, ioctl, int d, unsigned request, void *arg) {
943 COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg);
945 CHECK(ioctl_initialized);
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);
951 const ioctl_desc *desc = ioctl_lookup(request);
952 ioctl_desc decoded_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);
958 desc = &decoded_desc;
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);
969 COMMON_INTERCEPT_FUNCTION(ioctl);
974 #if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS || \
975 SANITIZER_INTERCEPT_GETPWENT || SANITIZER_INTERCEPT_FGETPWENT
976 static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) {
978 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd));
980 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_name,
981 REAL(strlen)(pwd->pw_name) + 1);
983 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_passwd,
984 REAL(strlen)(pwd->pw_passwd) + 1);
985 #if !SANITIZER_ANDROID
987 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_gecos,
988 REAL(strlen)(pwd->pw_gecos) + 1);
992 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_class,
993 REAL(strlen)(pwd->pw_class) + 1);
996 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_dir,
997 REAL(strlen)(pwd->pw_dir) + 1);
999 COMMON_INTERCEPTOR_INITIALIZE_RANGE(pwd->pw_shell,
1000 REAL(strlen)(pwd->pw_shell) + 1);
1004 static void unpoison_group(void *ctx, __sanitizer_group *grp) {
1006 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp));
1008 COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_name,
1009 REAL(strlen)(grp->gr_name) + 1);
1011 COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_passwd,
1012 REAL(strlen)(grp->gr_passwd) + 1);
1013 char **p = grp->gr_mem;
1015 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*p, REAL(strlen)(*p) + 1);
1017 COMMON_INTERCEPTOR_INITIALIZE_RANGE(grp->gr_mem,
1018 (p - grp->gr_mem + 1) * sizeof(*p));
1021 #endif // SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS ||
1022 // SANITIZER_INTERCEPT_GETPWENT || SANITIZER_INTERCEPT_FGETPWENT
1024 #if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS
1025 INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) {
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);
1033 INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) {
1035 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid);
1036 __sanitizer_passwd *res = REAL(getpwuid)(uid);
1037 if (res != 0) unpoison_passwd(ctx, res);
1040 INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) {
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);
1048 INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) {
1050 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid);
1051 __sanitizer_group *res = REAL(getgrgid)(gid);
1052 if (res != 0) unpoison_group(ctx, res);
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);
1061 #define INIT_GETPWNAM_AND_FRIENDS
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) {
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);
1072 if (result && *result) unpoison_passwd(ctx, *result);
1073 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1075 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1078 INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf,
1079 SIZE_T buflen, __sanitizer_passwd **result) {
1081 COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result);
1082 int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result);
1084 if (result && *result) unpoison_passwd(ctx, *result);
1085 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1087 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1090 INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp,
1091 char *buf, SIZE_T buflen, __sanitizer_group **result) {
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);
1097 if (result && *result) unpoison_group(ctx, *result);
1098 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1100 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1103 INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf,
1104 SIZE_T buflen, __sanitizer_group **result) {
1106 COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result);
1107 int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result);
1109 if (result && *result) unpoison_group(ctx, *result);
1110 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1112 if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
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);
1121 #define INIT_GETPWNAM_R_AND_FRIENDS
1124 #if SANITIZER_INTERCEPT_GETPWENT
1125 INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) {
1127 COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy);
1128 __sanitizer_passwd *res = REAL(getpwent)(dummy);
1129 if (res != 0) unpoison_passwd(ctx, res);
1132 INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) {
1134 COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy);
1135 __sanitizer_group *res = REAL(getgrent)(dummy);
1136 if (res != 0) unpoison_group(ctx, res);;
1139 #define INIT_GETPWENT \
1140 COMMON_INTERCEPT_FUNCTION(getpwent); \
1141 COMMON_INTERCEPT_FUNCTION(getgrent);
1143 #define INIT_GETPWENT
1146 #if SANITIZER_INTERCEPT_FGETPWENT
1147 INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) {
1149 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp);
1150 __sanitizer_passwd *res = REAL(fgetpwent)(fp);
1151 if (res != 0) unpoison_passwd(ctx, res);
1154 INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) {
1156 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp);
1157 __sanitizer_group *res = REAL(fgetgrent)(fp);
1158 if (res != 0) unpoison_group(ctx, res);
1161 #define INIT_FGETPWENT \
1162 COMMON_INTERCEPT_FUNCTION(fgetpwent); \
1163 COMMON_INTERCEPT_FUNCTION(fgetgrent);
1165 #define INIT_FGETPWENT
1168 #if SANITIZER_INTERCEPT_GETPWENT_R
1169 INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf,
1170 SIZE_T buflen, __sanitizer_passwd **pwbufp) {
1172 COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp);
1173 int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp);
1175 if (pwbufp && *pwbufp) unpoison_passwd(ctx, *pwbufp);
1176 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1178 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1181 INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf,
1182 SIZE_T buflen, __sanitizer_passwd **pwbufp) {
1184 COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp);
1185 int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp);
1187 if (pwbufp && *pwbufp) unpoison_passwd(ctx, *pwbufp);
1188 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1190 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1193 INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen,
1194 __sanitizer_group **pwbufp) {
1196 COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp);
1197 int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp);
1199 if (pwbufp && *pwbufp) unpoison_group(ctx, *pwbufp);
1200 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1202 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
1205 INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf,
1206 SIZE_T buflen, __sanitizer_group **pwbufp) {
1208 COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp);
1209 int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp);
1211 if (pwbufp && *pwbufp) unpoison_group(ctx, *pwbufp);
1212 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen);
1214 if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp));
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);
1223 #define INIT_GETPWENT_R
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) {
1232 COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy);
1233 REAL(setpwent)(dummy);
1235 INTERCEPTOR(void, endpwent, int dummy) {
1237 COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy);
1238 REAL(endpwent)(dummy);
1240 INTERCEPTOR(void, setgrent, int dummy) {
1242 COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy);
1243 REAL(setgrent)(dummy);
1245 INTERCEPTOR(void, endgrent, int dummy) {
1247 COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy);
1248 REAL(endgrent)(dummy);
1250 #define INIT_SETPWENT \
1251 COMMON_INTERCEPT_FUNCTION(setpwent); \
1252 COMMON_INTERCEPT_FUNCTION(endpwent); \
1253 COMMON_INTERCEPT_FUNCTION(setgrent); \
1254 COMMON_INTERCEPT_FUNCTION(endgrent);
1256 #define INIT_SETPWENT
1259 #if SANITIZER_INTERCEPT_CLOCK_GETTIME
1260 INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) {
1262 COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp);
1263 int res = REAL(clock_getres)(clk_id, tp);
1265 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
1269 INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) {
1271 COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp);
1272 int res = REAL(clock_gettime)(clk_id, tp);
1274 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz);
1278 INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) {
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);
1284 #define INIT_CLOCK_GETTIME \
1285 COMMON_INTERCEPT_FUNCTION(clock_getres); \
1286 COMMON_INTERCEPT_FUNCTION(clock_gettime); \
1287 COMMON_INTERCEPT_FUNCTION(clock_settime);
1289 #define INIT_CLOCK_GETTIME
1292 #if SANITIZER_INTERCEPT_GETITIMER
1293 INTERCEPTOR(int, getitimer, int which, void *curr_value) {
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);
1302 INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) {
1304 COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_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);
1313 #define INIT_GETITIMER \
1314 COMMON_INTERCEPT_FUNCTION(getitimer); \
1315 COMMON_INTERCEPT_FUNCTION(setitimer);
1317 #define INIT_GETITIMER
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);
1333 static THREADLOCAL __sanitizer_glob_t *pglob_copy;
1335 static void wrapped_gl_closedir(void *dir) {
1336 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
1337 IndirectExternCall(pglob_copy->gl_closedir)(dir);
1340 static void *wrapped_gl_readdir(void *dir) {
1341 COMMON_INTERCEPTOR_UNPOISON_PARAM(1);
1342 return IndirectExternCall(pglob_copy->gl_readdir)(dir);
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);
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);
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);
1363 INTERCEPTOR(int, glob, const char *pattern, int flags,
1364 int (*errfunc)(const char *epath, int eerrno),
1365 __sanitizer_glob_t *pglob) {
1367 COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob);
1368 __sanitizer_glob_t glob_copy = {
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;
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);
1389 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
1393 INTERCEPTOR(int, glob64, const char *pattern, int flags,
1394 int (*errfunc)(const char *epath, int eerrno),
1395 __sanitizer_glob_t *pglob) {
1397 COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob);
1398 __sanitizer_glob_t glob_copy = {
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;
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);
1419 if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob);
1423 COMMON_INTERCEPT_FUNCTION(glob); \
1424 COMMON_INTERCEPT_FUNCTION(glob64);
1425 #else // SANITIZER_INTERCEPT_GLOB
1427 #endif // SANITIZER_INTERCEPT_GLOB
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
1433 INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) {
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));
1441 INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop,
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);
1450 INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) {
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));
1458 INTERCEPTOR(int, wait3, int *status, int options, void *rusage) {
1460 COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage);
1461 int res = REAL(wait3)(status, options, rusage);
1463 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1464 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
1468 #if SANITIZER_ANDROID
1469 INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) {
1471 COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage);
1472 int res = REAL(__wait4)(pid, status, options, rusage);
1474 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1475 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
1479 #define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4);
1481 INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) {
1483 COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage);
1484 int res = REAL(wait4)(pid, status, options, rusage);
1486 if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status));
1487 if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz);
1491 #define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4);
1492 #endif // SANITIZER_ANDROID
1494 COMMON_INTERCEPT_FUNCTION(wait); \
1495 COMMON_INTERCEPT_FUNCTION(waitid); \
1496 COMMON_INTERCEPT_FUNCTION(waitpid); \
1497 COMMON_INTERCEPT_FUNCTION(wait3);
1503 #if SANITIZER_INTERCEPT_INET
1504 INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) {
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);
1514 INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) {
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);
1520 uptr sz = __sanitizer_in_addr_sz(af);
1521 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
1526 COMMON_INTERCEPT_FUNCTION(inet_ntop); \
1527 COMMON_INTERCEPT_FUNCTION(inet_pton);
1532 #if SANITIZER_INTERCEPT_INET
1533 INTERCEPTOR(int, inet_aton, const char *cp, void *dst) {
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);
1539 uptr sz = __sanitizer_in_addr_sz(af_inet);
1540 if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz);
1544 #define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton);
1546 #define INIT_INET_ATON
1549 #if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM
1550 INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) {
1552 COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param);
1553 int res = REAL(pthread_getschedparam)(thread, policy, param);
1555 if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy));
1556 if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param));
1560 #define INIT_PTHREAD_GETSCHEDPARAM \
1561 COMMON_INTERCEPT_FUNCTION(pthread_getschedparam);
1563 #define INIT_PTHREAD_GETSCHEDPARAM
1566 #if SANITIZER_INTERCEPT_GETADDRINFO
1567 INTERCEPTOR(int, getaddrinfo, char *node, char *service,
1568 struct __sanitizer_addrinfo *hints,
1569 struct __sanitizer_addrinfo **out) {
1571 COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out);
1572 if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, REAL(strlen)(node) + 1);
1574 COMMON_INTERCEPTOR_READ_RANGE(ctx, service, REAL(strlen)(service) + 1);
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;
1582 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
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);
1593 #define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo);
1595 #define INIT_GETADDRINFO
1598 #if SANITIZER_INTERCEPT_GETNAMEINFO
1599 INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host,
1600 unsigned hostlen, char *serv, unsigned servlen, int flags) {
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
1607 REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags);
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);
1616 #define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo);
1618 #define INIT_GETNAMEINFO
1621 #if SANITIZER_INTERCEPT_GETSOCKNAME
1622 INTERCEPTOR(int, getsockname, int sock_fd, void *addr, int *addrlen) {
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);
1629 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addrlen_in, *addrlen));
1633 #define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname);
1635 #define INIT_GETSOCKNAME
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));
1642 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, REAL(strlen)(h->h_name) + 1);
1643 char **p = h->h_aliases;
1645 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1);
1648 COMMON_INTERCEPTOR_WRITE_RANGE(
1649 ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases));
1652 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length);
1655 COMMON_INTERCEPTOR_WRITE_RANGE(
1656 ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list));
1660 #if SANITIZER_INTERCEPT_GETHOSTBYNAME
1661 INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) {
1663 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name);
1664 struct __sanitizer_hostent *res = REAL(gethostbyname)(name);
1665 if (res) write_hostent(ctx, res);
1669 INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len,
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);
1679 INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) {
1681 COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake);
1682 struct __sanitizer_hostent *res = REAL(gethostent)(fake);
1683 if (res) write_hostent(ctx, res);
1687 INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) {
1689 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af);
1690 struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af);
1691 if (res) write_hostent(ctx, res);
1694 #define INIT_GETHOSTBYNAME \
1695 COMMON_INTERCEPT_FUNCTION(gethostent); \
1696 COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \
1697 COMMON_INTERCEPT_FUNCTION(gethostbyname); \
1698 COMMON_INTERCEPT_FUNCTION(gethostbyname2);
1700 #define INIT_GETHOSTBYNAME
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) {
1707 COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result,
1709 int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop);
1711 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1712 if (res == 0 && *result) write_hostent(ctx, *result);
1715 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
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) {
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,
1729 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1730 if (res == 0 && *result) write_hostent(ctx, *result);
1733 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
1737 INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret,
1738 char *buf, SIZE_T buflen, __sanitizer_hostent **result,
1741 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result,
1743 int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop);
1745 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1746 if (res == 0 && *result) write_hostent(ctx, *result);
1749 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
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) {
1757 COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen,
1760 REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop);
1762 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1763 if (res == 0 && *result) write_hostent(ctx, *result);
1766 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop));
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);
1775 #define INIT_GETHOSTBYNAME_R
1778 #if SANITIZER_INTERCEPT_GETSOCKOPT
1779 INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval,
1782 COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval,
1784 if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen));
1785 int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen);
1787 if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen);
1790 #define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt);
1792 #define INIT_GETSOCKOPT
1795 #if SANITIZER_INTERCEPT_ACCEPT
1796 INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) {
1798 COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen);
1799 unsigned addrlen0 = 0;
1801 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
1802 addrlen0 = *addrlen;
1804 int fd2 = REAL(accept)(fd, addr, addrlen);
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));
1812 #define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept);
1817 #if SANITIZER_INTERCEPT_ACCEPT4
1818 INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) {
1820 COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f);
1821 unsigned addrlen0 = 0;
1823 COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen));
1824 addrlen0 = *addrlen;
1826 int fd2 = REAL(accept4)(fd, addr, addrlen, f);
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));
1834 #define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4);
1836 #define INIT_ACCEPT4
1839 #if SANITIZER_INTERCEPT_MODF
1840 INTERCEPTOR(double, modf, double x, double *iptr) {
1842 COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr);
1843 double res = REAL(modf)(x, iptr);
1845 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
1849 INTERCEPTOR(float, modff, float x, float *iptr) {
1851 COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr);
1852 float res = REAL(modff)(x, iptr);
1854 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
1858 INTERCEPTOR(long double, modfl, long double x, long double *iptr) {
1860 COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr);
1861 long double res = REAL(modfl)(x, iptr);
1863 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr));
1868 COMMON_INTERCEPT_FUNCTION(modf); \
1869 COMMON_INTERCEPT_FUNCTION(modff); \
1870 COMMON_INTERCEPT_FUNCTION(modfl);
1875 #if SANITIZER_INTERCEPT_RECVMSG
1876 static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg,
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);
1889 INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg,
1892 COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags);
1893 SSIZE_T res = REAL(recvmsg)(fd, msg, flags);
1895 if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd);
1897 write_msghdr(ctx, msg, res);
1898 COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg);
1903 #define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg);
1905 #define INIT_RECVMSG
1908 #if SANITIZER_INTERCEPT_GETPEERNAME
1909 INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) {
1911 COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen);
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));
1919 #define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername);
1921 #define INIT_GETPEERNAME
1924 #if SANITIZER_INTERCEPT_SYSINFO
1925 INTERCEPTOR(int, sysinfo, void *info) {
1927 COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info);
1928 int res = REAL(sysinfo)(info);
1930 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz);
1933 #define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo);
1935 #define INIT_SYSINFO
1938 #if SANITIZER_INTERCEPT_READDIR
1939 INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) {
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);
1947 INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry,
1948 __sanitizer_dirent **result) {
1950 COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result);
1951 int res = REAL(readdir_r)(dirp, entry, result);
1953 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1955 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen);
1960 #define INIT_READDIR \
1961 COMMON_INTERCEPT_FUNCTION(readdir); \
1962 COMMON_INTERCEPT_FUNCTION(readdir_r);
1964 #define INIT_READDIR
1967 #if SANITIZER_INTERCEPT_READDIR64
1968 INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) {
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);
1976 INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry,
1977 __sanitizer_dirent64 **result) {
1979 COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result);
1980 int res = REAL(readdir64_r)(dirp, entry, result);
1982 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
1984 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, (*result)->d_reclen);
1988 #define INIT_READDIR64 \
1989 COMMON_INTERCEPT_FUNCTION(readdir64); \
1990 COMMON_INTERCEPT_FUNCTION(readdir64_r);
1992 #define INIT_READDIR64
1995 #if SANITIZER_INTERCEPT_PTRACE
1996 INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) {
1998 COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, 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);
2015 uptr res = REAL(ptrace)(request, pid, addr, 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);
2036 #define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace);
2041 #if SANITIZER_INTERCEPT_SETLOCALE
2042 INTERCEPTOR(char *, setlocale, int category, char *locale) {
2044 COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, 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);
2052 #define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale);
2054 #define INIT_SETLOCALE
2057 #if SANITIZER_INTERCEPT_GETCWD
2058 INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) {
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);
2065 #define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd);
2070 #if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME
2071 INTERCEPTOR(char *, get_current_dir_name, int fake) {
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);
2079 #define INIT_GET_CURRENT_DIR_NAME \
2080 COMMON_INTERCEPT_FUNCTION(get_current_dir_name);
2082 #define INIT_GET_CURRENT_DIR_NAME
2085 #if SANITIZER_INTERCEPT_STRTOIMAX
2086 INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) {
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));
2094 INTERCEPTOR(INTMAX_T, strtoumax, const char *nptr, char **endptr, int base) {
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));
2102 #define INIT_STRTOIMAX \
2103 COMMON_INTERCEPT_FUNCTION(strtoimax); \
2104 COMMON_INTERCEPT_FUNCTION(strtoumax);
2106 #define INIT_STRTOIMAX
2109 #if SANITIZER_INTERCEPT_MBSTOWCS
2110 INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) {
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));
2121 INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len,
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));
2137 #define INIT_MBSTOWCS \
2138 COMMON_INTERCEPT_FUNCTION(mbstowcs); \
2139 COMMON_INTERCEPT_FUNCTION(mbsrtowcs);
2141 #define INIT_MBSTOWCS
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) {
2148 COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps);
2150 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
2151 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
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));
2162 #define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs);
2164 #define INIT_MBSNRTOWCS
2167 #if SANITIZER_INTERCEPT_WCSTOMBS
2168 INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) {
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);
2179 INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len,
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);
2193 #define INIT_WCSTOMBS \
2194 COMMON_INTERCEPT_FUNCTION(wcstombs); \
2195 COMMON_INTERCEPT_FUNCTION(wcsrtombs);
2197 #define INIT_WCSTOMBS
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) {
2204 COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps);
2206 COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src));
2207 if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms);
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);
2218 #define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs);
2220 #define INIT_WCSNRTOMBS
2223 #if SANITIZER_INTERCEPT_TCGETATTR
2224 INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) {
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);
2233 #define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr);
2235 #define INIT_TCGETATTR
2238 #if SANITIZER_INTERCEPT_REALPATH
2239 INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) {
2241 COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path);
2242 if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
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;
2250 allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1);
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);
2257 #define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath);
2259 #define INIT_REALPATH
2262 #if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME
2263 INTERCEPTOR(char *, canonicalize_file_name, const char *path) {
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);
2271 #define INIT_CANONICALIZE_FILE_NAME \
2272 COMMON_INTERCEPT_FUNCTION(canonicalize_file_name);
2274 #define INIT_CANONICALIZE_FILE_NAME
2277 #if SANITIZER_INTERCEPT_CONFSTR
2278 INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) {
2280 COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len);
2281 SIZE_T res = REAL(confstr)(name, buf, len);
2283 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len);
2286 #define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr);
2288 #define INIT_CONFSTR
2291 #if SANITIZER_INTERCEPT_SCHED_GETAFFINITY
2292 INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) {
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);
2299 #define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity);
2301 #define INIT_SCHED_GETAFFINITY
2304 #if SANITIZER_INTERCEPT_STRERROR
2305 INTERCEPTOR(char *, strerror, int errnum) {
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);
2312 #define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror);
2314 #define INIT_STRERROR
2317 #if SANITIZER_INTERCEPT_STRERROR_R
2318 INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) {
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
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);
2336 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, REAL(strlen)(res) + 1);
2340 #define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r);
2342 #define INIT_STRERROR_R
2345 #if SANITIZER_INTERCEPT_XPG_STRERROR_R
2346 INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) {
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.
2352 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, REAL(strlen)(buf) + 1);
2355 #define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r);
2357 #define INIT_XPG_STRERROR_R
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 **);
2365 static THREADLOCAL scandir_filter_f scandir_filter;
2366 static THREADLOCAL scandir_compar_f scandir_compar;
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);
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);
2384 INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist,
2385 scandir_filter_f filter, scandir_compar_f compar) {
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);
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);
2404 #define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir);
2406 #define INIT_SCANDIR
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 **);
2414 static THREADLOCAL scandir64_filter_f scandir64_filter;
2415 static THREADLOCAL scandir64_compar_f scandir64_compar;
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);
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);
2433 INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist,
2434 scandir64_filter_f filter, scandir64_compar_f compar) {
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;
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);
2454 #define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64);
2456 #define INIT_SCANDIR64
2459 #if SANITIZER_INTERCEPT_GETGROUPS
2460 INTERCEPTOR(int, getgroups, int size, u32 *lst) {
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));
2467 #define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups);
2469 #define INIT_GETGROUPS
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));
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));
2488 INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
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);
2497 #define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll);
2502 #if SANITIZER_INTERCEPT_PPOLL
2503 INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds,
2504 void *timeout_ts, __sanitizer_sigset_t *sigmask) {
2506 COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask);
2507 if (fds && nfds) read_pollfd(ctx, fds, nfds);
2509 COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz);
2510 // FIXME: read sigmask when all of sigemptyset, etc are intercepted.
2512 COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask);
2513 if (fds && nfds) write_pollfd(ctx, fds, nfds);
2516 #define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll);
2521 #if SANITIZER_INTERCEPT_WORDEXP
2522 INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) {
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);
2528 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p));
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);
2539 #define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp);
2541 #define INIT_WORDEXP
2544 #if SANITIZER_INTERCEPT_SIGWAIT
2545 INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) {
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));
2553 #define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait);
2555 #define INIT_SIGWAIT
2558 #if SANITIZER_INTERCEPT_SIGWAITINFO
2559 INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) {
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);
2567 #define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo);
2569 #define INIT_SIGWAITINFO
2572 #if SANITIZER_INTERCEPT_SIGTIMEDWAIT
2573 INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info,
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);
2583 #define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait);
2585 #define INIT_SIGTIMEDWAIT
2588 #if SANITIZER_INTERCEPT_SIGSETOPS
2589 INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) {
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));
2597 INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) {
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));
2604 #define INIT_SIGSETOPS \
2605 COMMON_INTERCEPT_FUNCTION(sigemptyset); \
2606 COMMON_INTERCEPT_FUNCTION(sigfillset);
2608 #define INIT_SIGSETOPS
2611 #if SANITIZER_INTERCEPT_SIGPENDING
2612 INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) {
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));
2619 #define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending);
2621 #define INIT_SIGPENDING
2624 #if SANITIZER_INTERCEPT_SIGPROCMASK
2625 INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set,
2626 __sanitizer_sigset_t *oldset) {
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);
2632 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset));
2635 #define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask);
2637 #define INIT_SIGPROCMASK
2640 #if SANITIZER_INTERCEPT_BACKTRACE
2641 INTERCEPTOR(int, backtrace, void **buffer, int size) {
2643 COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size);
2644 int res = REAL(backtrace)(buffer, size);
2646 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer));
2650 INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) {
2652 COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size);
2654 COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer));
2655 char **res = REAL(backtrace_symbols)(buffer, 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);
2663 #define INIT_BACKTRACE \
2664 COMMON_INTERCEPT_FUNCTION(backtrace); \
2665 COMMON_INTERCEPT_FUNCTION(backtrace_symbols);
2667 #define INIT_BACKTRACE
2670 #if SANITIZER_INTERCEPT__EXIT
2671 INTERCEPTOR(void, _exit, int status) {
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);
2678 #define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit);
2683 #if SANITIZER_INTERCEPT_PHTREAD_MUTEX
2684 INTERCEPTOR(int, pthread_mutex_lock, void *m) {
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);
2695 INTERCEPTOR(int, pthread_mutex_unlock, void *m) {
2697 COMMON_INTERCEPTOR_ENTER(ctx, pthread_mutex_unlock, m);
2698 COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m);
2699 return REAL(pthread_mutex_unlock)(m);
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)
2706 #define INIT_PTHREAD_MUTEX_LOCK
2707 #define INIT_PTHREAD_MUTEX_UNLOCK
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);
2717 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir,
2718 REAL(strlen)(mnt->mnt_dir) + 1);
2720 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type,
2721 REAL(strlen)(mnt->mnt_type) + 1);
2723 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts,
2724 REAL(strlen)(mnt->mnt_opts) + 1);
2728 #if SANITIZER_INTERCEPT_GETMNTENT
2729 INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) {
2731 COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp);
2732 __sanitizer_mntent *res = REAL(getmntent)(fp);
2733 if (res) write_mntent(ctx, res);
2736 #define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent);
2738 #define INIT_GETMNTENT
2741 #if SANITIZER_INTERCEPT_GETMNTENT_R
2742 INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp,
2743 __sanitizer_mntent *mntbuf, char *buf, int buflen) {
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);
2750 #define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r);
2752 #define INIT_GETMNTENT_R
2755 #if SANITIZER_INTERCEPT_STATFS
2756 INTERCEPTOR(int, statfs, char *path, void *buf) {
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);
2764 INTERCEPTOR(int, fstatfs, int fd, void *buf) {
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);
2771 #define INIT_STATFS \
2772 COMMON_INTERCEPT_FUNCTION(statfs); \
2773 COMMON_INTERCEPT_FUNCTION(fstatfs);
2778 #if SANITIZER_INTERCEPT_STATFS64
2779 INTERCEPTOR(int, statfs64, char *path, void *buf) {
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);
2787 INTERCEPTOR(int, fstatfs64, int fd, void *buf) {
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);
2794 #define INIT_STATFS64 \
2795 COMMON_INTERCEPT_FUNCTION(statfs64); \
2796 COMMON_INTERCEPT_FUNCTION(fstatfs64);
2798 #define INIT_STATFS64
2801 #if SANITIZER_INTERCEPT_STATVFS
2802 INTERCEPTOR(int, statvfs, char *path, void *buf) {
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);
2810 INTERCEPTOR(int, fstatvfs, int fd, void *buf) {
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);
2817 #define INIT_STATVFS \
2818 COMMON_INTERCEPT_FUNCTION(statvfs); \
2819 COMMON_INTERCEPT_FUNCTION(fstatvfs);
2821 #define INIT_STATVFS
2824 #if SANITIZER_INTERCEPT_STATVFS64
2825 INTERCEPTOR(int, statvfs64, char *path, void *buf) {
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);
2833 INTERCEPTOR(int, fstatvfs64, int fd, void *buf) {
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);
2840 #define INIT_STATVFS64 \
2841 COMMON_INTERCEPT_FUNCTION(statvfs64); \
2842 COMMON_INTERCEPT_FUNCTION(fstatvfs64);
2844 #define INIT_STATVFS64
2847 #if SANITIZER_INTERCEPT_INITGROUPS
2848 INTERCEPTOR(int, initgroups, char *user, u32 group) {
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);
2855 #define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups);
2857 #define INIT_INITGROUPS
2860 #if SANITIZER_INTERCEPT_ETHER
2861 INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) {
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);
2869 INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) {
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));
2877 INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) {
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);
2886 INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) {
2888 COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr);
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));
2895 INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr,
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);
2902 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
2904 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, REAL(strlen)(hostname) + 1);
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);
2918 #if SANITIZER_INTERCEPT_ETHER_R
2919 INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) {
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);
2927 INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf,
2928 __sanitizer_ether_addr *addr) {
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));
2936 #define INIT_ETHER_R \
2937 COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \
2938 COMMON_INTERCEPT_FUNCTION(ether_aton_r);
2940 #define INIT_ETHER_R
2943 #if SANITIZER_INTERCEPT_SHMCTL
2944 INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) {
2946 COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf);
2947 int res = REAL(shmctl)(shmid, cmd, buf);
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);
2960 #define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl);
2965 #if SANITIZER_INTERCEPT_RANDOM_R
2966 INTERCEPTOR(int, random_r, void *buf, u32 *result) {
2968 COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result);
2969 int res = REAL(random_r)(buf, result);
2971 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result));
2974 #define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r);
2976 #define INIT_RANDOM_R
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) { \
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); \
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) {
3000 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size);
3001 int res = REAL(pthread_attr_getstack)(attr, addr, size);
3003 if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr));
3004 if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size));
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 {
3014 int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) {
3015 return REAL(pthread_attr_getstack)(attr, addr, size);
3018 } // namespace __sanitizer
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);
3029 #define INIT_PTHREAD_ATTR_GET
3032 #if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED
3033 INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int))
3035 #define INIT_PTHREAD_ATTR_GETINHERITSCHED \
3036 COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched);
3038 #define INIT_PTHREAD_ATTR_GETINHERITSCHED
3041 #if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP
3042 INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize,
3045 COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize,
3047 int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset);
3048 if (!res && cpusetsize && cpuset)
3049 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize);
3053 #define INIT_PTHREAD_ATTR_GETAFFINITY_NP \
3054 COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np);
3056 #define INIT_PTHREAD_ATTR_GETAFFINITY_NP
3059 #if SANITIZER_INTERCEPT_TMPNAM
3060 INTERCEPTOR(char *, tmpnam, char *s) {
3062 COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s);
3063 char *res = REAL(tmpnam)(s);
3066 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, REAL(strlen)(s) + 1);
3068 COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, REAL(strlen)(res) + 1);
3072 #define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam);
3077 #if SANITIZER_INTERCEPT_TMPNAM_R
3078 INTERCEPTOR(char *, tmpnam_r, char *s) {
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);
3085 #define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r);
3087 #define INIT_TMPNAM_R
3090 #if SANITIZER_INTERCEPT_TEMPNAM
3091 INTERCEPTOR(char *, tempnam, char *dir, char *pfx) {
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);
3100 #define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam);
3102 #define INIT_TEMPNAM
3105 #if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP
3106 INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) {
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);
3112 #define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np);
3114 #define INIT_PTHREAD_SETNAME_NP
3117 #if SANITIZER_INTERCEPT_SINCOS
3118 INTERCEPTOR(void, sincos, double x, double *sin, double *cos) {
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));
3125 INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) {
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));
3132 INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) {
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));
3139 #define INIT_SINCOS \
3140 COMMON_INTERCEPT_FUNCTION(sincos); \
3141 COMMON_INTERCEPT_FUNCTION(sincosf); \
3142 COMMON_INTERCEPT_FUNCTION(sincosl);
3147 #if SANITIZER_INTERCEPT_REMQUO
3148 INTERCEPTOR(double, remquo, double x, double y, int *quo) {
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));
3155 INTERCEPTOR(float, remquof, float x, float y, int *quo) {
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));
3162 INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) {
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));
3169 #define INIT_REMQUO \
3170 COMMON_INTERCEPT_FUNCTION(remquo); \
3171 COMMON_INTERCEPT_FUNCTION(remquof); \
3172 COMMON_INTERCEPT_FUNCTION(remquol);
3177 #if SANITIZER_INTERCEPT_LGAMMA
3179 INTERCEPTOR(double, lgamma, double x) {
3181 COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x);
3182 double res = REAL(lgamma)(x);
3183 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
3186 INTERCEPTOR(float, lgammaf, float x) {
3188 COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x);
3189 float res = REAL(lgammaf)(x);
3190 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
3193 INTERCEPTOR(long double, lgammal, long double x) {
3195 COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x);
3196 long double res = REAL(lgammal)(x);
3197 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam));
3200 #define INIT_LGAMMA \
3201 COMMON_INTERCEPT_FUNCTION(lgamma); \
3202 COMMON_INTERCEPT_FUNCTION(lgammaf); \
3203 COMMON_INTERCEPT_FUNCTION(lgammal);
3208 #if SANITIZER_INTERCEPT_LGAMMA_R
3209 INTERCEPTOR(double, lgamma_r, double x, int *signp) {
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));
3216 INTERCEPTOR(float, lgammaf_r, float x, int *signp) {
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));
3223 INTERCEPTOR(long double, lgammal_r, long double x, int *signp) {
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));
3230 #define INIT_LGAMMA_R \
3231 COMMON_INTERCEPT_FUNCTION(lgamma_r); \
3232 COMMON_INTERCEPT_FUNCTION(lgammaf_r); \
3233 COMMON_INTERCEPT_FUNCTION(lgammal_r);
3235 #define INIT_LGAMMA_R
3238 #if SANITIZER_INTERCEPT_DRAND48_R
3239 INTERCEPTOR(int, drand48_r, void *buffer, double *result) {
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));
3246 INTERCEPTOR(int, lrand48_r, void *buffer, long *result) {
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));
3253 #define INIT_DRAND48_R \
3254 COMMON_INTERCEPT_FUNCTION(drand48_r); \
3255 COMMON_INTERCEPT_FUNCTION(lrand48_r);
3257 #define INIT_DRAND48_R
3260 #if SANITIZER_INTERCEPT_RAND_R
3261 INTERCEPTOR(int, rand_r, unsigned *seedp) {
3263 COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp);
3264 COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp));
3265 return REAL(rand_r)(seedp);
3267 #define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r);
3272 #if SANITIZER_INTERCEPT_GETLINE
3273 INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) {
3275 COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream);
3276 SSIZE_T res = REAL(getline)(lineptr, n, stream);
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);
3284 INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim,
3287 COMMON_INTERCEPTOR_ENTER(ctx, getdelim, lineptr, n, delim, stream);
3288 SSIZE_T res = REAL(getdelim)(lineptr, n, delim, stream);
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);
3296 #define INIT_GETLINE \
3297 COMMON_INTERCEPT_FUNCTION(getline); \
3298 COMMON_INTERCEPT_FUNCTION(getdelim);
3300 #define INIT_GETLINE
3303 #if SANITIZER_INTERCEPT_ICONV
3304 INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft,
3305 char **outbuf, SIZE_T *outbytesleft) {
3307 COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf,
3310 COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft));
3311 if (inbuf && inbytesleft)
3312 COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft);
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);
3323 #define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv);
3328 #if SANITIZER_INTERCEPT_TIMES
3329 INTERCEPTOR(__sanitizer_clock_t, times, void *tms) {
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);
3337 #define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times);
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) {
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);
3352 #define INIT_TLS_GET_ADDR
3355 #if SANITIZER_INTERCEPT_LISTXATTR
3356 INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) {
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);
3366 INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) {
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);
3374 INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) {
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);
3381 #define INIT_LISTXATTR \
3382 COMMON_INTERCEPT_FUNCTION(listxattr); \
3383 COMMON_INTERCEPT_FUNCTION(llistxattr); \
3384 COMMON_INTERCEPT_FUNCTION(flistxattr);
3386 #define INIT_LISTXATTR
3389 #if SANITIZER_INTERCEPT_GETXATTR
3390 INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value,
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);
3400 INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value,
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);
3410 INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value,
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);
3419 #define INIT_GETXATTR \
3420 COMMON_INTERCEPT_FUNCTION(getxattr); \
3421 COMMON_INTERCEPT_FUNCTION(lgetxattr); \
3422 COMMON_INTERCEPT_FUNCTION(fgetxattr);
3424 #define INIT_GETXATTR
3427 #if SANITIZER_INTERCEPT_GETRESID
3428 INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) {
3430 COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid);
3431 int res = REAL(getresuid)(ruid, euid, suid);
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);
3439 INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) {
3441 COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid);
3442 int res = REAL(getresgid)(rgid, egid, sgid);
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);
3450 #define INIT_GETRESID \
3451 COMMON_INTERCEPT_FUNCTION(getresuid); \
3452 COMMON_INTERCEPT_FUNCTION(getresgid);
3454 #define INIT_GETRESID
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) {
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;
3469 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs));
3471 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name,
3472 REAL(strlen)(p->ifa_name) + 1);
3474 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz);
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.
3480 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz);
3481 // FIXME(smatveev): Unpoison p->ifa_data as well.
3487 #define INIT_GETIFADDRS \
3488 COMMON_INTERCEPT_FUNCTION(getifaddrs);
3490 #define INIT_GETIFADDRS
3493 #if SANITIZER_INTERCEPT_IF_INDEXTONAME
3494 INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) {
3496 COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname);
3497 char *res = REAL(if_indextoname)(ifindex, ifname);
3499 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, REAL(strlen)(ifname) + 1);
3502 INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) {
3504 COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname);
3506 COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, REAL(strlen)(ifname) + 1);
3507 return REAL(if_nametoindex)(ifname);
3509 #define INIT_IF_INDEXTONAME \
3510 COMMON_INTERCEPT_FUNCTION(if_indextoname); \
3511 COMMON_INTERCEPT_FUNCTION(if_nametoindex);
3513 #define INIT_IF_INDEXTONAME
3516 #if SANITIZER_INTERCEPT_CAPGET
3517 INTERCEPTOR(int, capget, void *hdrp, void *datap) {
3519 COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap);
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.
3530 INTERCEPTOR(int, capset, void *hdrp, const void *datap) {
3532 COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap);
3534 COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz);
3536 COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, __user_cap_data_struct_sz);
3537 return REAL(capset)(hdrp, datap);
3539 #define INIT_CAPGET \
3540 COMMON_INTERCEPT_FUNCTION(capget); \
3541 COMMON_INTERCEPT_FUNCTION(capset);
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);
3551 INTERCEPTOR(void *, __aeabi_memmove, void *to, const void *from, uptr size) {
3552 return WRAP(memmove)(to, from, size);
3554 INTERCEPTOR(void *, __aeabi_memmove4, void *to, const void *from, uptr size) {
3555 return WRAP(memmove)(to, from, size);
3557 INTERCEPTOR(void *, __aeabi_memmove8, void *to, const void *from, uptr size) {
3558 return WRAP(memmove)(to, from, size);
3560 INTERCEPTOR(void *, __aeabi_memcpy, void *to, const void *from, uptr size) {
3561 return WRAP(memcpy)(to, from, size);
3563 INTERCEPTOR(void *, __aeabi_memcpy4, void *to, const void *from, uptr size) {
3564 return WRAP(memcpy)(to, from, size);
3566 INTERCEPTOR(void *, __aeabi_memcpy8, void *to, const void *from, uptr size) {
3567 return WRAP(memcpy)(to, from, size);
3569 // Note the argument order.
3570 INTERCEPTOR(void *, __aeabi_memset, void *block, uptr size, int c) {
3571 return WRAP(memset)(block, c, size);
3573 INTERCEPTOR(void *, __aeabi_memset4, void *block, uptr size, int c) {
3574 return WRAP(memset)(block, c, size);
3576 INTERCEPTOR(void *, __aeabi_memset8, void *block, uptr size, int c) {
3577 return WRAP(memset)(block, c, size);
3579 INTERCEPTOR(void *, __aeabi_memclr, void *block, uptr size) {
3580 return WRAP(memset)(block, 0, size);
3582 INTERCEPTOR(void *, __aeabi_memclr4, void *block, uptr size) {
3583 return WRAP(memset)(block, 0, size);
3585 INTERCEPTOR(void *, __aeabi_memclr8, void *block, uptr size) {
3586 return WRAP(memset)(block, 0, size);
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);
3602 #define INIT_AEABI_MEM
3603 #endif // SANITIZER_INTERCEPT_AEABI_MEM
3605 #if SANITIZER_INTERCEPT___BZERO
3606 DECLARE_REAL_AND_INTERCEPTOR(void *, memset, void *, int, uptr);
3608 INTERCEPTOR(void *, __bzero, void *block, uptr size) {
3609 return WRAP(memset)(block, 0, size);
3611 #define INIT___BZERO COMMON_INTERCEPT_FUNCTION(__bzero);
3613 #define INIT___BZERO
3614 #endif // SANITIZER_INTERCEPT___BZERO
3616 #if SANITIZER_INTERCEPT_FTIME
3617 INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) {
3619 COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp);
3620 int res = REAL(ftime)(tp);
3622 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp));
3625 #define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime);
3628 #endif // SANITIZER_INTERCEPT_FTIME
3630 #if SANITIZER_INTERCEPT_XDR
3631 INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr,
3632 unsigned size, int op) {
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);
3644 INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) {
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));
3651 #define XDR_INTERCEPTOR(F, T) \
3652 INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) { \
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)); \
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)
3690 // FIXME: intercept xdr_array, opaque, union, vector, reference, pointer,
3691 // wrapstring, sizeof
3693 INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep,
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);
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);
3711 INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p,
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);
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));
3723 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, REAL(strlen)(*p) + 1);
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);
3761 #endif // SANITIZER_INTERCEPT_XDR
3763 #if SANITIZER_INTERCEPT_TSEARCH
3764 INTERCEPTOR(void *, tsearch, void *key, void **rootp,
3765 int (*compar)(const void *, const void *)) {
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 *));
3773 #define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch);
3775 #define INIT_TSEARCH
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
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) {
3794 COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp);
3795 int res = REAL(__uflow)(fp);
3799 INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) {
3801 COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp);
3802 int res = REAL(__underflow)(fp);
3806 INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) {
3808 COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch);
3809 int res = REAL(__overflow)(fp, ch);
3813 INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) {
3815 COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp);
3816 int res = REAL(__wuflow)(fp);
3820 INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) {
3822 COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp);
3823 int res = REAL(__wunderflow)(fp);
3827 INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) {
3829 COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch);
3830 int res = REAL(__woverflow)(fp, ch);
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);
3842 #define INIT_LIBIO_INTERNALS
3845 #if SANITIZER_INTERCEPT_FOPEN
3846 INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) {
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);
3856 INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) {
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);
3864 INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode,
3865 __sanitizer_FILE *fp) {
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);
3876 #define INIT_FOPEN \
3877 COMMON_INTERCEPT_FUNCTION(fopen); \
3878 COMMON_INTERCEPT_FUNCTION(fdopen); \
3879 COMMON_INTERCEPT_FUNCTION(freopen);
3884 #if SANITIZER_INTERCEPT_FOPEN64
3885 INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) {
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);
3895 INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode,
3896 __sanitizer_FILE *fp) {
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);
3907 #define INIT_FOPEN64 \
3908 COMMON_INTERCEPT_FUNCTION(fopen64); \
3909 COMMON_INTERCEPT_FUNCTION(freopen64);
3911 #define INIT_FOPEN64
3914 #if SANITIZER_INTERCEPT_OPEN_MEMSTREAM
3915 INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) {
3917 COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc);
3918 __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc);
3920 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
3921 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
3923 FileMetadata file = {ptr, sizeloc};
3924 SetInterceptorMetadata(res, file);
3928 INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr,
3931 COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc);
3932 __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc);
3934 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr));
3935 COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc));
3937 FileMetadata file = {(char **)ptr, sizeloc};
3938 SetInterceptorMetadata(res, file);
3942 INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size,
3945 COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode);
3946 __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode);
3947 if (res) unpoison_file(res);
3950 #define INIT_OPEN_MEMSTREAM \
3951 COMMON_INTERCEPT_FUNCTION(open_memstream); \
3952 COMMON_INTERCEPT_FUNCTION(open_wmemstream); \
3953 COMMON_INTERCEPT_FUNCTION(fmemopen);
3955 #define INIT_OPEN_MEMSTREAM
3958 #if SANITIZER_INTERCEPT_OBSTACK
3959 static void initialize_obstack(__sanitizer_obstack *obstack) {
3960 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack));
3962 COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk,
3963 sizeof(*obstack->chunk));
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)) {
3970 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn,
3972 int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn);
3973 if (res) initialize_obstack(obstack);
3976 INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz,
3977 int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) {
3979 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn,
3981 int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn);
3982 if (res) initialize_obstack(obstack);
3985 INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) {
3987 COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length);
3988 REAL(_obstack_newchunk)(obstack, length);
3990 COMMON_INTERCEPTOR_INITIALIZE_RANGE(
3991 obstack->chunk, obstack->next_free - (char *)obstack->chunk);
3993 #define INIT_OBSTACK \
3994 COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \
3995 COMMON_INTERCEPT_FUNCTION(_obstack_begin); \
3996 COMMON_INTERCEPT_FUNCTION(_obstack_newchunk);
3998 #define INIT_OBSTACK
4001 #if SANITIZER_INTERCEPT_FFLUSH
4002 INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) {
4004 COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp);
4005 int res = REAL(fflush)(fp);
4006 // FIXME: handle fp == NULL
4008 const FileMetadata *m = GetInterceptorMetadata(fp);
4009 if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
4013 #define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush);
4018 #if SANITIZER_INTERCEPT_FCLOSE
4019 INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) {
4021 COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp);
4023 COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
4024 const FileMetadata *m = GetInterceptorMetadata(fp);
4026 COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size);
4027 DeleteInterceptorMetadata(fp);
4030 return REAL(fclose)(fp);
4032 #define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose);
4037 static void InitializeCommonInterceptors() {
4038 static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
4039 interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
4061 INIT_LOCALTIME_AND_FRIENDS;
4069 INIT_GETPWNAM_AND_FRIENDS;
4070 INIT_GETPWNAM_R_AND_FRIENDS;
4082 INIT_PTHREAD_GETSCHEDPARAM;
4087 INIT_GETHOSTBYNAME_R;
4102 INIT_GET_CURRENT_DIR_NAME;
4110 INIT_CANONICALIZE_FILE_NAME;
4112 INIT_SCHED_GETAFFINITY;
4115 INIT_XPG_STRERROR_R;
4130 INIT_PTHREAD_MUTEX_LOCK;
4131 INIT_PTHREAD_MUTEX_UNLOCK;
4143 INIT_PTHREAD_ATTR_GET;
4144 INIT_PTHREAD_ATTR_GETINHERITSCHED;
4145 INIT_PTHREAD_ATTR_GETAFFINITY_NP;
4149 INIT_PTHREAD_SETNAME_NP;
4164 INIT_IF_INDEXTONAME;
4171 INIT_LIBIO_INTERNALS;
4174 INIT_OPEN_MEMSTREAM;