1 //===-- tsan_interceptors.cc ----------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file is a part of ThreadSanitizer (TSan), a race detector.
11 //
12 // FIXME: move as many interceptors as possible into
13 // sanitizer_common/sanitizer_common_interceptors.h
14 //===----------------------------------------------------------------------===//
15
16 #include "sanitizer_common/sanitizer_atomic.h"
17 #include "sanitizer_common/sanitizer_libc.h"
18 #include "sanitizer_common/sanitizer_platform_limits_posix.h"
19 #include "sanitizer_common/sanitizer_placement_new.h"
20 #include "sanitizer_common/sanitizer_stacktrace.h"
21 #include "interception/interception.h"
22 #include "tsan_interface.h"
23 #include "tsan_platform.h"
24 #include "tsan_rtl.h"
25 #include "tsan_mman.h"
26 #include "tsan_fd.h"
27
28 using namespace __tsan; // NOLINT
29
30 const int kSigCount = 128;
31
32 struct my_siginfo_t {
33 int opaque[128];
34 };
35
36 struct sigset_t {
37 u64 val[1024 / 8 / sizeof(u64)];
38 };
39
40 struct ucontext_t {
41 uptr opaque[117];
42 };
43
44 extern "C" int pthread_attr_init(void *attr);
45 extern "C" int pthread_attr_destroy(void *attr);
46 extern "C" int pthread_attr_getdetachstate(void *attr, int *v);
47 extern "C" int pthread_attr_setstacksize(void *attr, uptr stacksize);
48 extern "C" int pthread_attr_getstacksize(void *attr, uptr *stacksize);
49 extern "C" int pthread_key_create(unsigned *key, void (*destructor)(void* v));
50 extern "C" int pthread_setspecific(unsigned key, const void *v);
51 extern "C" int pthread_mutexattr_gettype(void *a, int *type);
52 extern "C" int pthread_yield();
53 extern "C" int pthread_sigmask(int how, const sigset_t *set, sigset_t *oldset);
54 extern "C" int sigfillset(sigset_t *set);
55 extern "C" void *pthread_self();
56 extern "C" void _exit(int status);
57 extern "C" int *__errno_location();
58 extern "C" int fileno_unlocked(void *stream);
59 extern "C" void *__libc_malloc(uptr size);
60 extern "C" void *__libc_calloc(uptr size, uptr n);
61 extern "C" void *__libc_realloc(void *ptr, uptr size);
62 extern "C" void __libc_free(void *ptr);
63 const int PTHREAD_MUTEX_RECURSIVE = 1;
64 const int PTHREAD_MUTEX_RECURSIVE_NP = 1;
65 const int kPthreadAttrSize = 56;
66 const int EINVAL = 22;
67 const int EBUSY = 16;
68 const int EPOLL_CTL_ADD = 1;
69 const int SIGILL = 4;
70 const int SIGABRT = 6;
71 const int SIGFPE = 8;
72 const int SIGSEGV = 11;
73 const int SIGPIPE = 13;
74 const int SIGBUS = 7;
75 void *const MAP_FAILED = (void*)-1;
76 const int PTHREAD_BARRIER_SERIAL_THREAD = -1;
77 const int MAP_FIXED = 0x10;
78 typedef long long_t; // NOLINT
79
80 // From /usr/include/unistd.h
81 # define F_ULOCK 0 /* Unlock a previously locked region. */
82 # define F_LOCK 1 /* Lock a region for exclusive use. */
83 # define F_TLOCK 2 /* Test and lock a region for exclusive use. */
84 # define F_TEST 3 /* Test a region for other processes locks. */
85
86 typedef void (*sighandler_t)(int sig);
87
88 #define errno (*__errno_location())
89
90 struct sigaction_t {
91 union {
92 sighandler_t sa_handler;
93 void (*sa_sigaction)(int sig, my_siginfo_t *siginfo, void *uctx);
94 };
95 sigset_t sa_mask;
96 int sa_flags;
97 void (*sa_restorer)();
98 };
99
100 const sighandler_t SIG_DFL = (sighandler_t)0;
101 const sighandler_t SIG_IGN = (sighandler_t)1;
102 const sighandler_t SIG_ERR = (sighandler_t)-1;
103 const int SA_SIGINFO = 4;
104 const int SIG_SETMASK = 2;
105
106 namespace std {
107 struct nothrow_t {};
108 } // namespace std
109
110 static sigaction_t sigactions[kSigCount];
111
112 namespace __tsan {
113 struct SignalDesc {
114 bool armed;
115 bool sigaction;
116 my_siginfo_t siginfo;
117 ucontext_t ctx;
118 };
119
120 struct SignalContext {
121 int in_blocking_func;
122 int int_signal_send;
123 int pending_signal_count;
124 SignalDesc pending_signals[kSigCount];
125 };
126 } // namespace __tsan
127
SigCtx(ThreadState * thr)128 static SignalContext *SigCtx(ThreadState *thr) {
129 SignalContext *ctx = (SignalContext*)thr->signal_ctx;
130 if (ctx == 0 && thr->is_alive) {
131 ScopedInRtl in_rtl;
132 ctx = (SignalContext*)MmapOrDie(sizeof(*ctx), "SignalContext");
133 MemoryResetRange(thr, (uptr)&SigCtx, (uptr)ctx, sizeof(*ctx));
134 thr->signal_ctx = ctx;
135 }
136 return ctx;
137 }
138
139 static unsigned g_thread_finalize_key;
140
141 class ScopedInterceptor {
142 public:
143 ScopedInterceptor(ThreadState *thr, const char *fname, uptr pc);
144 ~ScopedInterceptor();
145 private:
146 ThreadState *const thr_;
147 const int in_rtl_;
148 };
149
ScopedInterceptor(ThreadState * thr,const char * fname,uptr pc)150 ScopedInterceptor::ScopedInterceptor(ThreadState *thr, const char *fname,
151 uptr pc)
152 : thr_(thr)
153 , in_rtl_(thr->in_rtl) {
154 if (thr_->in_rtl == 0) {
155 Initialize(thr);
156 FuncEntry(thr, pc);
157 thr_->in_rtl++;
158 DPrintf("#%d: intercept %s()\n", thr_->tid, fname);
159 } else {
160 thr_->in_rtl++;
161 }
162 }
163
~ScopedInterceptor()164 ScopedInterceptor::~ScopedInterceptor() {
165 thr_->in_rtl--;
166 if (thr_->in_rtl == 0) {
167 FuncExit(thr_);
168 ProcessPendingSignals(thr_);
169 }
170 CHECK_EQ(in_rtl_, thr_->in_rtl);
171 }
172
173 #define SCOPED_INTERCEPTOR_RAW(func, ...) \
174 ThreadState *thr = cur_thread(); \
175 StatInc(thr, StatInterceptor); \
176 StatInc(thr, StatInt_##func); \
177 const uptr caller_pc = GET_CALLER_PC(); \
178 ScopedInterceptor si(thr, #func, caller_pc); \
179 const uptr pc = __sanitizer::StackTrace::GetPreviousInstructionPc( \
180 __sanitizer::StackTrace::GetCurrentPc()); \
181 (void)pc; \
182 /**/
183
184 #define SCOPED_TSAN_INTERCEPTOR(func, ...) \
185 SCOPED_INTERCEPTOR_RAW(func, __VA_ARGS__); \
186 if (REAL(func) == 0) { \
187 Printf("FATAL: ThreadSanitizer: failed to intercept %s\n", #func); \
188 Die(); \
189 } \
190 if (thr->in_rtl > 1) \
191 return REAL(func)(__VA_ARGS__); \
192 /**/
193
194 #define TSAN_INTERCEPTOR(ret, func, ...) INTERCEPTOR(ret, func, __VA_ARGS__)
195 #define TSAN_INTERCEPT(func) INTERCEPT_FUNCTION(func)
196
197 #define BLOCK_REAL(name) (BlockingCall(thr), REAL(name))
198
199 struct BlockingCall {
BlockingCallBlockingCall200 explicit BlockingCall(ThreadState *thr)
201 : ctx(SigCtx(thr)) {
202 ctx->in_blocking_func++;
203 }
204
~BlockingCallBlockingCall205 ~BlockingCall() {
206 ctx->in_blocking_func--;
207 }
208
209 SignalContext *ctx;
210 };
211
TSAN_INTERCEPTOR(unsigned,sleep,unsigned sec)212 TSAN_INTERCEPTOR(unsigned, sleep, unsigned sec) {
213 SCOPED_TSAN_INTERCEPTOR(sleep, sec);
214 unsigned res = BLOCK_REAL(sleep)(sec);
215 AfterSleep(thr, pc);
216 return res;
217 }
218
TSAN_INTERCEPTOR(int,usleep,long_t usec)219 TSAN_INTERCEPTOR(int, usleep, long_t usec) {
220 SCOPED_TSAN_INTERCEPTOR(usleep, usec);
221 int res = BLOCK_REAL(usleep)(usec);
222 AfterSleep(thr, pc);
223 return res;
224 }
225
TSAN_INTERCEPTOR(int,nanosleep,void * req,void * rem)226 TSAN_INTERCEPTOR(int, nanosleep, void *req, void *rem) {
227 SCOPED_TSAN_INTERCEPTOR(nanosleep, req, rem);
228 int res = BLOCK_REAL(nanosleep)(req, rem);
229 AfterSleep(thr, pc);
230 return res;
231 }
232
233 class AtExitContext {
234 public:
AtExitContext()235 AtExitContext()
236 : mtx_(MutexTypeAtExit, StatMtxAtExit)
237 , pos_() {
238 }
239
240 typedef void(*atexit_t)();
241
atexit(ThreadState * thr,uptr pc,bool is_on_exit,atexit_t f,void * arg)242 int atexit(ThreadState *thr, uptr pc, bool is_on_exit,
243 atexit_t f, void *arg) {
244 Lock l(&mtx_);
245 if (pos_ == kMaxAtExit)
246 return 1;
247 Release(thr, pc, (uptr)this);
248 stack_[pos_] = f;
249 args_[pos_] = arg;
250 is_on_exits_[pos_] = is_on_exit;
251 pos_++;
252 return 0;
253 }
254
exit(ThreadState * thr,uptr pc)255 void exit(ThreadState *thr, uptr pc) {
256 CHECK_EQ(thr->in_rtl, 0);
257 for (;;) {
258 atexit_t f = 0;
259 void *arg = 0;
260 bool is_on_exit = false;
261 {
262 Lock l(&mtx_);
263 if (pos_) {
264 pos_--;
265 f = stack_[pos_];
266 arg = args_[pos_];
267 is_on_exit = is_on_exits_[pos_];
268 ScopedInRtl in_rtl;
269 Acquire(thr, pc, (uptr)this);
270 }
271 }
272 if (f == 0)
273 break;
274 DPrintf("#%d: executing atexit func %p\n", thr->tid, f);
275 CHECK_EQ(thr->in_rtl, 0);
276 if (is_on_exit)
277 ((void(*)(int status, void *arg))f)(0, arg);
278 else
279 ((void(*)(void *arg, void *dso))f)(arg, 0);
280 }
281 }
282
283 private:
284 static const int kMaxAtExit = 128;
285 Mutex mtx_;
286 atexit_t stack_[kMaxAtExit];
287 void *args_[kMaxAtExit];
288 bool is_on_exits_[kMaxAtExit];
289 int pos_;
290 };
291
292 static AtExitContext *atexit_ctx;
293
finalize(void * arg)294 static void finalize(void *arg) {
295 ThreadState * thr = cur_thread();
296 uptr pc = 0;
297 atexit_ctx->exit(thr, pc);
298 int status = Finalize(cur_thread());
299 if (status)
300 _exit(status);
301 }
302
TSAN_INTERCEPTOR(int,atexit,void (* f)())303 TSAN_INTERCEPTOR(int, atexit, void (*f)()) {
304 if (cur_thread()->in_symbolizer)
305 return 0;
306 SCOPED_TSAN_INTERCEPTOR(atexit, f);
307 return atexit_ctx->atexit(thr, pc, false, (void(*)())f, 0);
308 }
309
TSAN_INTERCEPTOR(int,on_exit,void (* f)(int,void *),void * arg)310 TSAN_INTERCEPTOR(int, on_exit, void(*f)(int, void*), void *arg) {
311 if (cur_thread()->in_symbolizer)
312 return 0;
313 SCOPED_TSAN_INTERCEPTOR(on_exit, f, arg);
314 return atexit_ctx->atexit(thr, pc, true, (void(*)())f, arg);
315 }
316
TSAN_INTERCEPTOR(int,__cxa_atexit,void (* f)(void * a),void * arg,void * dso)317 TSAN_INTERCEPTOR(int, __cxa_atexit, void (*f)(void *a), void *arg, void *dso) {
318 if (cur_thread()->in_symbolizer)
319 return 0;
320 SCOPED_TSAN_INTERCEPTOR(__cxa_atexit, f, arg, dso);
321 if (dso)
322 return REAL(__cxa_atexit)(f, arg, dso);
323 return atexit_ctx->atexit(thr, pc, false, (void(*)())f, arg);
324 }
325
TSAN_INTERCEPTOR(void,longjmp,void * env,int val)326 TSAN_INTERCEPTOR(void, longjmp, void *env, int val) {
327 SCOPED_TSAN_INTERCEPTOR(longjmp, env, val);
328 Printf("ThreadSanitizer: longjmp() is not supported\n");
329 Die();
330 }
331
TSAN_INTERCEPTOR(void,siglongjmp,void * env,int val)332 TSAN_INTERCEPTOR(void, siglongjmp, void *env, int val) {
333 SCOPED_TSAN_INTERCEPTOR(siglongjmp, env, val);
334 Printf("ThreadSanitizer: siglongjmp() is not supported\n");
335 Die();
336 }
337
TSAN_INTERCEPTOR(void *,malloc,uptr size)338 TSAN_INTERCEPTOR(void*, malloc, uptr size) {
339 if (cur_thread()->in_symbolizer)
340 return __libc_malloc(size);
341 void *p = 0;
342 {
343 SCOPED_INTERCEPTOR_RAW(malloc, size);
344 p = user_alloc(thr, pc, size);
345 }
346 invoke_malloc_hook(p, size);
347 return p;
348 }
349
TSAN_INTERCEPTOR(void *,__libc_memalign,uptr align,uptr sz)350 TSAN_INTERCEPTOR(void*, __libc_memalign, uptr align, uptr sz) {
351 SCOPED_TSAN_INTERCEPTOR(__libc_memalign, align, sz);
352 return user_alloc(thr, pc, sz, align);
353 }
354
TSAN_INTERCEPTOR(void *,calloc,uptr size,uptr n)355 TSAN_INTERCEPTOR(void*, calloc, uptr size, uptr n) {
356 if (cur_thread()->in_symbolizer)
357 return __libc_calloc(size, n);
358 if (__sanitizer::CallocShouldReturnNullDueToOverflow(size, n)) return 0;
359 void *p = 0;
360 {
361 SCOPED_INTERCEPTOR_RAW(calloc, size, n);
362 p = user_alloc(thr, pc, n * size);
363 if (p) internal_memset(p, 0, n * size);
364 }
365 invoke_malloc_hook(p, n * size);
366 return p;
367 }
368
TSAN_INTERCEPTOR(void *,realloc,void * p,uptr size)369 TSAN_INTERCEPTOR(void*, realloc, void *p, uptr size) {
370 if (cur_thread()->in_symbolizer)
371 return __libc_realloc(p, size);
372 if (p)
373 invoke_free_hook(p);
374 {
375 SCOPED_INTERCEPTOR_RAW(realloc, p, size);
376 p = user_realloc(thr, pc, p, size);
377 }
378 invoke_malloc_hook(p, size);
379 return p;
380 }
381
TSAN_INTERCEPTOR(void,free,void * p)382 TSAN_INTERCEPTOR(void, free, void *p) {
383 if (p == 0)
384 return;
385 if (cur_thread()->in_symbolizer)
386 return __libc_free(p);
387 invoke_free_hook(p);
388 SCOPED_INTERCEPTOR_RAW(free, p);
389 user_free(thr, pc, p);
390 }
391
TSAN_INTERCEPTOR(void,cfree,void * p)392 TSAN_INTERCEPTOR(void, cfree, void *p) {
393 if (p == 0)
394 return;
395 if (cur_thread()->in_symbolizer)
396 return __libc_free(p);
397 invoke_free_hook(p);
398 SCOPED_INTERCEPTOR_RAW(cfree, p);
399 user_free(thr, pc, p);
400 }
401
TSAN_INTERCEPTOR(uptr,malloc_usable_size,void * p)402 TSAN_INTERCEPTOR(uptr, malloc_usable_size, void *p) {
403 SCOPED_INTERCEPTOR_RAW(malloc_usable_size, p);
404 return user_alloc_usable_size(thr, pc, p);
405 }
406
407 #define OPERATOR_NEW_BODY(mangled_name) \
408 if (cur_thread()->in_symbolizer) \
409 return __libc_malloc(size); \
410 void *p = 0; \
411 { \
412 SCOPED_INTERCEPTOR_RAW(mangled_name, size); \
413 p = user_alloc(thr, pc, size); \
414 } \
415 invoke_malloc_hook(p, size); \
416 return p;
417
operator new(__sanitizer::uptr size)418 void *operator new(__sanitizer::uptr size) {
419 OPERATOR_NEW_BODY(_Znwm);
420 }
operator new[](__sanitizer::uptr size)421 void *operator new[](__sanitizer::uptr size) {
422 OPERATOR_NEW_BODY(_Znam);
423 }
operator new(__sanitizer::uptr size,std::nothrow_t const &)424 void *operator new(__sanitizer::uptr size, std::nothrow_t const&) {
425 OPERATOR_NEW_BODY(_ZnwmRKSt9nothrow_t);
426 }
operator new[](__sanitizer::uptr size,std::nothrow_t const &)427 void *operator new[](__sanitizer::uptr size, std::nothrow_t const&) {
428 OPERATOR_NEW_BODY(_ZnamRKSt9nothrow_t);
429 }
430
431 #define OPERATOR_DELETE_BODY(mangled_name) \
432 if (ptr == 0) return; \
433 if (cur_thread()->in_symbolizer) \
434 return __libc_free(ptr); \
435 invoke_free_hook(ptr); \
436 SCOPED_INTERCEPTOR_RAW(mangled_name, ptr); \
437 user_free(thr, pc, ptr);
438
operator delete(void * ptr)439 void operator delete(void *ptr) {
440 OPERATOR_DELETE_BODY(_ZdlPv);
441 }
operator delete[](void * ptr)442 void operator delete[](void *ptr) {
443 OPERATOR_DELETE_BODY(_ZdlPvRKSt9nothrow_t);
444 }
operator delete(void * ptr,std::nothrow_t const &)445 void operator delete(void *ptr, std::nothrow_t const&) {
446 OPERATOR_DELETE_BODY(_ZdaPv);
447 }
operator delete[](void * ptr,std::nothrow_t const &)448 void operator delete[](void *ptr, std::nothrow_t const&) {
449 OPERATOR_DELETE_BODY(_ZdaPvRKSt9nothrow_t);
450 }
451
TSAN_INTERCEPTOR(uptr,strlen,const char * s)452 TSAN_INTERCEPTOR(uptr, strlen, const char *s) {
453 SCOPED_TSAN_INTERCEPTOR(strlen, s);
454 uptr len = internal_strlen(s);
455 MemoryAccessRange(thr, pc, (uptr)s, len + 1, false);
456 return len;
457 }
458
TSAN_INTERCEPTOR(void *,memset,void * dst,int v,uptr size)459 TSAN_INTERCEPTOR(void*, memset, void *dst, int v, uptr size) {
460 SCOPED_TSAN_INTERCEPTOR(memset, dst, v, size);
461 MemoryAccessRange(thr, pc, (uptr)dst, size, true);
462 return internal_memset(dst, v, size);
463 }
464
TSAN_INTERCEPTOR(void *,memcpy,void * dst,const void * src,uptr size)465 TSAN_INTERCEPTOR(void*, memcpy, void *dst, const void *src, uptr size) {
466 SCOPED_TSAN_INTERCEPTOR(memcpy, dst, src, size);
467 MemoryAccessRange(thr, pc, (uptr)dst, size, true);
468 MemoryAccessRange(thr, pc, (uptr)src, size, false);
469 return internal_memcpy(dst, src, size);
470 }
471
TSAN_INTERCEPTOR(int,memcmp,const void * s1,const void * s2,uptr n)472 TSAN_INTERCEPTOR(int, memcmp, const void *s1, const void *s2, uptr n) {
473 SCOPED_TSAN_INTERCEPTOR(memcmp, s1, s2, n);
474 int res = 0;
475 uptr len = 0;
476 for (; len < n; len++) {
477 if ((res = ((unsigned char*)s1)[len] - ((unsigned char*)s2)[len]))
478 break;
479 }
480 MemoryAccessRange(thr, pc, (uptr)s1, len < n ? len + 1 : n, false);
481 MemoryAccessRange(thr, pc, (uptr)s2, len < n ? len + 1 : n, false);
482 return res;
483 }
484
TSAN_INTERCEPTOR(int,strcmp,const char * s1,const char * s2)485 TSAN_INTERCEPTOR(int, strcmp, const char *s1, const char *s2) {
486 SCOPED_TSAN_INTERCEPTOR(strcmp, s1, s2);
487 uptr len = 0;
488 for (; s1[len] && s2[len]; len++) {
489 if (s1[len] != s2[len])
490 break;
491 }
492 MemoryAccessRange(thr, pc, (uptr)s1, len + 1, false);
493 MemoryAccessRange(thr, pc, (uptr)s2, len + 1, false);
494 return s1[len] - s2[len];
495 }
496
TSAN_INTERCEPTOR(int,strncmp,const char * s1,const char * s2,uptr n)497 TSAN_INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr n) {
498 SCOPED_TSAN_INTERCEPTOR(strncmp, s1, s2, n);
499 uptr len = 0;
500 for (; len < n && s1[len] && s2[len]; len++) {
501 if (s1[len] != s2[len])
502 break;
503 }
504 MemoryAccessRange(thr, pc, (uptr)s1, len < n ? len + 1 : n, false);
505 MemoryAccessRange(thr, pc, (uptr)s2, len < n ? len + 1 : n, false);
506 return len == n ? 0 : s1[len] - s2[len];
507 }
508
TSAN_INTERCEPTOR(void *,memchr,void * s,int c,uptr n)509 TSAN_INTERCEPTOR(void*, memchr, void *s, int c, uptr n) {
510 SCOPED_TSAN_INTERCEPTOR(memchr, s, c, n);
511 void *res = REAL(memchr)(s, c, n);
512 uptr len = res ? (char*)res - (char*)s + 1 : n;
513 MemoryAccessRange(thr, pc, (uptr)s, len, false);
514 return res;
515 }
516
TSAN_INTERCEPTOR(void *,memrchr,char * s,int c,uptr n)517 TSAN_INTERCEPTOR(void*, memrchr, char *s, int c, uptr n) {
518 SCOPED_TSAN_INTERCEPTOR(memrchr, s, c, n);
519 MemoryAccessRange(thr, pc, (uptr)s, n, false);
520 return REAL(memrchr)(s, c, n);
521 }
522
TSAN_INTERCEPTOR(void *,memmove,void * dst,void * src,uptr n)523 TSAN_INTERCEPTOR(void*, memmove, void *dst, void *src, uptr n) {
524 SCOPED_TSAN_INTERCEPTOR(memmove, dst, src, n);
525 MemoryAccessRange(thr, pc, (uptr)dst, n, true);
526 MemoryAccessRange(thr, pc, (uptr)src, n, false);
527 return REAL(memmove)(dst, src, n);
528 }
529
TSAN_INTERCEPTOR(char *,strchr,char * s,int c)530 TSAN_INTERCEPTOR(char*, strchr, char *s, int c) {
531 SCOPED_TSAN_INTERCEPTOR(strchr, s, c);
532 char *res = REAL(strchr)(s, c);
533 uptr len = res ? (char*)res - (char*)s + 1 : internal_strlen(s) + 1;
534 MemoryAccessRange(thr, pc, (uptr)s, len, false);
535 return res;
536 }
537
TSAN_INTERCEPTOR(char *,strchrnul,char * s,int c)538 TSAN_INTERCEPTOR(char*, strchrnul, char *s, int c) {
539 SCOPED_TSAN_INTERCEPTOR(strchrnul, s, c);
540 char *res = REAL(strchrnul)(s, c);
541 uptr len = (char*)res - (char*)s + 1;
542 MemoryAccessRange(thr, pc, (uptr)s, len, false);
543 return res;
544 }
545
TSAN_INTERCEPTOR(char *,strrchr,char * s,int c)546 TSAN_INTERCEPTOR(char*, strrchr, char *s, int c) {
547 SCOPED_TSAN_INTERCEPTOR(strrchr, s, c);
548 MemoryAccessRange(thr, pc, (uptr)s, internal_strlen(s) + 1, false);
549 return REAL(strrchr)(s, c);
550 }
551
TSAN_INTERCEPTOR(char *,strcpy,char * dst,const char * src)552 TSAN_INTERCEPTOR(char*, strcpy, char *dst, const char *src) { // NOLINT
553 SCOPED_TSAN_INTERCEPTOR(strcpy, dst, src); // NOLINT
554 uptr srclen = internal_strlen(src);
555 MemoryAccessRange(thr, pc, (uptr)dst, srclen + 1, true);
556 MemoryAccessRange(thr, pc, (uptr)src, srclen + 1, false);
557 return REAL(strcpy)(dst, src); // NOLINT
558 }
559
TSAN_INTERCEPTOR(char *,strncpy,char * dst,char * src,uptr n)560 TSAN_INTERCEPTOR(char*, strncpy, char *dst, char *src, uptr n) {
561 SCOPED_TSAN_INTERCEPTOR(strncpy, dst, src, n);
562 uptr srclen = internal_strnlen(src, n);
563 MemoryAccessRange(thr, pc, (uptr)dst, n, true);
564 MemoryAccessRange(thr, pc, (uptr)src, min(srclen + 1, n), false);
565 return REAL(strncpy)(dst, src, n);
566 }
567
TSAN_INTERCEPTOR(const char *,strstr,const char * s1,const char * s2)568 TSAN_INTERCEPTOR(const char*, strstr, const char *s1, const char *s2) {
569 SCOPED_TSAN_INTERCEPTOR(strstr, s1, s2);
570 const char *res = REAL(strstr)(s1, s2);
571 uptr len1 = internal_strlen(s1);
572 uptr len2 = internal_strlen(s2);
573 MemoryAccessRange(thr, pc, (uptr)s1, len1 + 1, false);
574 MemoryAccessRange(thr, pc, (uptr)s2, len2 + 1, false);
575 return res;
576 }
577
fix_mmap_addr(void ** addr,long_t sz,int flags)578 static bool fix_mmap_addr(void **addr, long_t sz, int flags) {
579 if (*addr) {
580 if (!IsAppMem((uptr)*addr) || !IsAppMem((uptr)*addr + sz - 1)) {
581 if (flags & MAP_FIXED) {
582 errno = EINVAL;
583 return false;
584 } else {
585 *addr = 0;
586 }
587 }
588 }
589 return true;
590 }
591
TSAN_INTERCEPTOR(void *,mmap,void * addr,long_t sz,int prot,int flags,int fd,unsigned off)592 TSAN_INTERCEPTOR(void*, mmap, void *addr, long_t sz, int prot,
593 int flags, int fd, unsigned off) {
594 SCOPED_TSAN_INTERCEPTOR(mmap, addr, sz, prot, flags, fd, off);
595 if (!fix_mmap_addr(&addr, sz, flags))
596 return MAP_FAILED;
597 void *res = REAL(mmap)(addr, sz, prot, flags, fd, off);
598 if (res != MAP_FAILED) {
599 if (fd > 0)
600 FdAccess(thr, pc, fd);
601 MemoryRangeImitateWrite(thr, pc, (uptr)res, sz);
602 }
603 return res;
604 }
605
TSAN_INTERCEPTOR(void *,mmap64,void * addr,long_t sz,int prot,int flags,int fd,u64 off)606 TSAN_INTERCEPTOR(void*, mmap64, void *addr, long_t sz, int prot,
607 int flags, int fd, u64 off) {
608 SCOPED_TSAN_INTERCEPTOR(mmap64, addr, sz, prot, flags, fd, off);
609 if (!fix_mmap_addr(&addr, sz, flags))
610 return MAP_FAILED;
611 void *res = REAL(mmap64)(addr, sz, prot, flags, fd, off);
612 if (res != MAP_FAILED) {
613 if (fd > 0)
614 FdAccess(thr, pc, fd);
615 MemoryRangeImitateWrite(thr, pc, (uptr)res, sz);
616 }
617 return res;
618 }
619
TSAN_INTERCEPTOR(int,munmap,void * addr,long_t sz)620 TSAN_INTERCEPTOR(int, munmap, void *addr, long_t sz) {
621 SCOPED_TSAN_INTERCEPTOR(munmap, addr, sz);
622 DontNeedShadowFor((uptr)addr, sz);
623 int res = REAL(munmap)(addr, sz);
624 return res;
625 }
626
TSAN_INTERCEPTOR(void *,memalign,uptr align,uptr sz)627 TSAN_INTERCEPTOR(void*, memalign, uptr align, uptr sz) {
628 SCOPED_TSAN_INTERCEPTOR(memalign, align, sz);
629 return user_alloc(thr, pc, sz, align);
630 }
631
TSAN_INTERCEPTOR(void *,valloc,uptr sz)632 TSAN_INTERCEPTOR(void*, valloc, uptr sz) {
633 SCOPED_TSAN_INTERCEPTOR(valloc, sz);
634 return user_alloc(thr, pc, sz, GetPageSizeCached());
635 }
636
TSAN_INTERCEPTOR(void *,pvalloc,uptr sz)637 TSAN_INTERCEPTOR(void*, pvalloc, uptr sz) {
638 SCOPED_TSAN_INTERCEPTOR(pvalloc, sz);
639 sz = RoundUp(sz, GetPageSizeCached());
640 return user_alloc(thr, pc, sz, GetPageSizeCached());
641 }
642
TSAN_INTERCEPTOR(int,posix_memalign,void ** memptr,uptr align,uptr sz)643 TSAN_INTERCEPTOR(int, posix_memalign, void **memptr, uptr align, uptr sz) {
644 SCOPED_TSAN_INTERCEPTOR(posix_memalign, memptr, align, sz);
645 *memptr = user_alloc(thr, pc, sz, align);
646 return 0;
647 }
648
649 // Used in thread-safe function static initialization.
__cxa_guard_acquire(atomic_uint32_t * g)650 extern "C" int INTERFACE_ATTRIBUTE __cxa_guard_acquire(atomic_uint32_t *g) {
651 SCOPED_INTERCEPTOR_RAW(__cxa_guard_acquire, g);
652 for (;;) {
653 u32 cmp = atomic_load(g, memory_order_acquire);
654 if (cmp == 0) {
655 if (atomic_compare_exchange_strong(g, &cmp, 1<<16, memory_order_relaxed))
656 return 1;
657 } else if (cmp == 1) {
658 Acquire(thr, pc, (uptr)g);
659 return 0;
660 } else {
661 internal_sched_yield();
662 }
663 }
664 }
665
__cxa_guard_release(atomic_uint32_t * g)666 extern "C" void INTERFACE_ATTRIBUTE __cxa_guard_release(atomic_uint32_t *g) {
667 SCOPED_INTERCEPTOR_RAW(__cxa_guard_release, g);
668 Release(thr, pc, (uptr)g);
669 atomic_store(g, 1, memory_order_release);
670 }
671
__cxa_guard_abort(atomic_uint32_t * g)672 extern "C" void INTERFACE_ATTRIBUTE __cxa_guard_abort(atomic_uint32_t *g) {
673 SCOPED_INTERCEPTOR_RAW(__cxa_guard_abort, g);
674 atomic_store(g, 0, memory_order_relaxed);
675 }
676
thread_finalize(void * v)677 static void thread_finalize(void *v) {
678 uptr iter = (uptr)v;
679 if (iter > 1) {
680 if (pthread_setspecific(g_thread_finalize_key, (void*)(iter - 1))) {
681 Printf("ThreadSanitizer: failed to set thread key\n");
682 Die();
683 }
684 return;
685 }
686 {
687 ScopedInRtl in_rtl;
688 ThreadState *thr = cur_thread();
689 ThreadFinish(thr);
690 SignalContext *sctx = thr->signal_ctx;
691 if (sctx) {
692 thr->signal_ctx = 0;
693 UnmapOrDie(sctx, sizeof(*sctx));
694 }
695 }
696 }
697
698
699 struct ThreadParam {
700 void* (*callback)(void *arg);
701 void *param;
702 atomic_uintptr_t tid;
703 };
704
__tsan_thread_start_func(void * arg)705 extern "C" void *__tsan_thread_start_func(void *arg) {
706 ThreadParam *p = (ThreadParam*)arg;
707 void* (*callback)(void *arg) = p->callback;
708 void *param = p->param;
709 int tid = 0;
710 {
711 ThreadState *thr = cur_thread();
712 ScopedInRtl in_rtl;
713 if (pthread_setspecific(g_thread_finalize_key, (void*)4)) {
714 Printf("ThreadSanitizer: failed to set thread key\n");
715 Die();
716 }
717 while ((tid = atomic_load(&p->tid, memory_order_acquire)) == 0)
718 pthread_yield();
719 atomic_store(&p->tid, 0, memory_order_release);
720 ThreadStart(thr, tid, GetTid());
721 CHECK_EQ(thr->in_rtl, 1);
722 }
723 void *res = callback(param);
724 // Prevent the callback from being tail called,
725 // it mixes up stack traces.
726 volatile int foo = 42;
727 foo++;
728 return res;
729 }
730
TSAN_INTERCEPTOR(int,pthread_create,void * th,void * attr,void * (* callback)(void *),void * param)731 TSAN_INTERCEPTOR(int, pthread_create,
732 void *th, void *attr, void *(*callback)(void*), void * param) {
733 SCOPED_TSAN_INTERCEPTOR(pthread_create, th, attr, callback, param);
734 __sanitizer_pthread_attr_t myattr;
735 if (attr == 0) {
736 pthread_attr_init(&myattr);
737 attr = &myattr;
738 }
739 int detached = 0;
740 pthread_attr_getdetachstate(attr, &detached);
741 uptr stacksize = 0;
742 pthread_attr_getstacksize(attr, &stacksize);
743 // We place the huge ThreadState object into TLS, account for that.
744 const uptr minstacksize = GetTlsSize() + 128*1024;
745 if (stacksize < minstacksize) {
746 DPrintf("ThreadSanitizer: stacksize %zu->%zu\n", stacksize, minstacksize);
747 pthread_attr_setstacksize(attr, minstacksize);
748 }
749 ThreadParam p;
750 p.callback = callback;
751 p.param = param;
752 atomic_store(&p.tid, 0, memory_order_relaxed);
753 int res = REAL(pthread_create)(th, attr, __tsan_thread_start_func, &p);
754 if (res == 0) {
755 int tid = ThreadCreate(thr, pc, *(uptr*)th, detached);
756 CHECK_NE(tid, 0);
757 atomic_store(&p.tid, tid, memory_order_release);
758 while (atomic_load(&p.tid, memory_order_acquire) != 0)
759 pthread_yield();
760 }
761 if (attr == &myattr)
762 pthread_attr_destroy(&myattr);
763 return res;
764 }
765
TSAN_INTERCEPTOR(int,pthread_join,void * th,void ** ret)766 TSAN_INTERCEPTOR(int, pthread_join, void *th, void **ret) {
767 SCOPED_TSAN_INTERCEPTOR(pthread_join, th, ret);
768 int tid = ThreadTid(thr, pc, (uptr)th);
769 int res = BLOCK_REAL(pthread_join)(th, ret);
770 if (res == 0) {
771 ThreadJoin(thr, pc, tid);
772 }
773 return res;
774 }
775
TSAN_INTERCEPTOR(int,pthread_detach,void * th)776 TSAN_INTERCEPTOR(int, pthread_detach, void *th) {
777 SCOPED_TSAN_INTERCEPTOR(pthread_detach, th);
778 int tid = ThreadTid(thr, pc, (uptr)th);
779 int res = REAL(pthread_detach)(th);
780 if (res == 0) {
781 ThreadDetach(thr, pc, tid);
782 }
783 return res;
784 }
785
TSAN_INTERCEPTOR(int,pthread_mutex_init,void * m,void * a)786 TSAN_INTERCEPTOR(int, pthread_mutex_init, void *m, void *a) {
787 SCOPED_TSAN_INTERCEPTOR(pthread_mutex_init, m, a);
788 int res = REAL(pthread_mutex_init)(m, a);
789 if (res == 0) {
790 bool recursive = false;
791 if (a) {
792 int type = 0;
793 if (pthread_mutexattr_gettype(a, &type) == 0)
794 recursive = (type == PTHREAD_MUTEX_RECURSIVE
795 || type == PTHREAD_MUTEX_RECURSIVE_NP);
796 }
797 MutexCreate(thr, pc, (uptr)m, false, recursive, false);
798 }
799 return res;
800 }
801
TSAN_INTERCEPTOR(int,pthread_mutex_destroy,void * m)802 TSAN_INTERCEPTOR(int, pthread_mutex_destroy, void *m) {
803 SCOPED_TSAN_INTERCEPTOR(pthread_mutex_destroy, m);
804 int res = REAL(pthread_mutex_destroy)(m);
805 if (res == 0 || res == EBUSY) {
806 MutexDestroy(thr, pc, (uptr)m);
807 }
808 return res;
809 }
810
TSAN_INTERCEPTOR(int,pthread_mutex_lock,void * m)811 TSAN_INTERCEPTOR(int, pthread_mutex_lock, void *m) {
812 SCOPED_TSAN_INTERCEPTOR(pthread_mutex_lock, m);
813 int res = REAL(pthread_mutex_lock)(m);
814 if (res == 0) {
815 MutexLock(thr, pc, (uptr)m);
816 }
817 return res;
818 }
819
TSAN_INTERCEPTOR(int,pthread_mutex_trylock,void * m)820 TSAN_INTERCEPTOR(int, pthread_mutex_trylock, void *m) {
821 SCOPED_TSAN_INTERCEPTOR(pthread_mutex_trylock, m);
822 int res = REAL(pthread_mutex_trylock)(m);
823 if (res == 0) {
824 MutexLock(thr, pc, (uptr)m);
825 }
826 return res;
827 }
828
TSAN_INTERCEPTOR(int,pthread_mutex_timedlock,void * m,void * abstime)829 TSAN_INTERCEPTOR(int, pthread_mutex_timedlock, void *m, void *abstime) {
830 SCOPED_TSAN_INTERCEPTOR(pthread_mutex_timedlock, m, abstime);
831 int res = REAL(pthread_mutex_timedlock)(m, abstime);
832 if (res == 0) {
833 MutexLock(thr, pc, (uptr)m);
834 }
835 return res;
836 }
837
TSAN_INTERCEPTOR(int,pthread_mutex_unlock,void * m)838 TSAN_INTERCEPTOR(int, pthread_mutex_unlock, void *m) {
839 SCOPED_TSAN_INTERCEPTOR(pthread_mutex_unlock, m);
840 MutexUnlock(thr, pc, (uptr)m);
841 int res = REAL(pthread_mutex_unlock)(m);
842 return res;
843 }
844
TSAN_INTERCEPTOR(int,pthread_spin_init,void * m,int pshared)845 TSAN_INTERCEPTOR(int, pthread_spin_init, void *m, int pshared) {
846 SCOPED_TSAN_INTERCEPTOR(pthread_spin_init, m, pshared);
847 int res = REAL(pthread_spin_init)(m, pshared);
848 if (res == 0) {
849 MutexCreate(thr, pc, (uptr)m, false, false, false);
850 }
851 return res;
852 }
853
TSAN_INTERCEPTOR(int,pthread_spin_destroy,void * m)854 TSAN_INTERCEPTOR(int, pthread_spin_destroy, void *m) {
855 SCOPED_TSAN_INTERCEPTOR(pthread_spin_destroy, m);
856 int res = REAL(pthread_spin_destroy)(m);
857 if (res == 0) {
858 MutexDestroy(thr, pc, (uptr)m);
859 }
860 return res;
861 }
862
TSAN_INTERCEPTOR(int,pthread_spin_lock,void * m)863 TSAN_INTERCEPTOR(int, pthread_spin_lock, void *m) {
864 SCOPED_TSAN_INTERCEPTOR(pthread_spin_lock, m);
865 int res = REAL(pthread_spin_lock)(m);
866 if (res == 0) {
867 MutexLock(thr, pc, (uptr)m);
868 }
869 return res;
870 }
871
TSAN_INTERCEPTOR(int,pthread_spin_trylock,void * m)872 TSAN_INTERCEPTOR(int, pthread_spin_trylock, void *m) {
873 SCOPED_TSAN_INTERCEPTOR(pthread_spin_trylock, m);
874 int res = REAL(pthread_spin_trylock)(m);
875 if (res == 0) {
876 MutexLock(thr, pc, (uptr)m);
877 }
878 return res;
879 }
880
TSAN_INTERCEPTOR(int,pthread_spin_unlock,void * m)881 TSAN_INTERCEPTOR(int, pthread_spin_unlock, void *m) {
882 SCOPED_TSAN_INTERCEPTOR(pthread_spin_unlock, m);
883 MutexUnlock(thr, pc, (uptr)m);
884 int res = REAL(pthread_spin_unlock)(m);
885 return res;
886 }
887
TSAN_INTERCEPTOR(int,pthread_rwlock_init,void * m,void * a)888 TSAN_INTERCEPTOR(int, pthread_rwlock_init, void *m, void *a) {
889 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_init, m, a);
890 int res = REAL(pthread_rwlock_init)(m, a);
891 if (res == 0) {
892 MutexCreate(thr, pc, (uptr)m, true, false, false);
893 }
894 return res;
895 }
896
TSAN_INTERCEPTOR(int,pthread_rwlock_destroy,void * m)897 TSAN_INTERCEPTOR(int, pthread_rwlock_destroy, void *m) {
898 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_destroy, m);
899 int res = REAL(pthread_rwlock_destroy)(m);
900 if (res == 0) {
901 MutexDestroy(thr, pc, (uptr)m);
902 }
903 return res;
904 }
905
TSAN_INTERCEPTOR(int,pthread_rwlock_rdlock,void * m)906 TSAN_INTERCEPTOR(int, pthread_rwlock_rdlock, void *m) {
907 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_rdlock, m);
908 int res = REAL(pthread_rwlock_rdlock)(m);
909 if (res == 0) {
910 MutexReadLock(thr, pc, (uptr)m);
911 }
912 return res;
913 }
914
TSAN_INTERCEPTOR(int,pthread_rwlock_tryrdlock,void * m)915 TSAN_INTERCEPTOR(int, pthread_rwlock_tryrdlock, void *m) {
916 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_tryrdlock, m);
917 int res = REAL(pthread_rwlock_tryrdlock)(m);
918 if (res == 0) {
919 MutexReadLock(thr, pc, (uptr)m);
920 }
921 return res;
922 }
923
TSAN_INTERCEPTOR(int,pthread_rwlock_timedrdlock,void * m,void * abstime)924 TSAN_INTERCEPTOR(int, pthread_rwlock_timedrdlock, void *m, void *abstime) {
925 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_timedrdlock, m, abstime);
926 int res = REAL(pthread_rwlock_timedrdlock)(m, abstime);
927 if (res == 0) {
928 MutexReadLock(thr, pc, (uptr)m);
929 }
930 return res;
931 }
932
TSAN_INTERCEPTOR(int,pthread_rwlock_wrlock,void * m)933 TSAN_INTERCEPTOR(int, pthread_rwlock_wrlock, void *m) {
934 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_wrlock, m);
935 int res = REAL(pthread_rwlock_wrlock)(m);
936 if (res == 0) {
937 MutexLock(thr, pc, (uptr)m);
938 }
939 return res;
940 }
941
TSAN_INTERCEPTOR(int,pthread_rwlock_trywrlock,void * m)942 TSAN_INTERCEPTOR(int, pthread_rwlock_trywrlock, void *m) {
943 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_trywrlock, m);
944 int res = REAL(pthread_rwlock_trywrlock)(m);
945 if (res == 0) {
946 MutexLock(thr, pc, (uptr)m);
947 }
948 return res;
949 }
950
TSAN_INTERCEPTOR(int,pthread_rwlock_timedwrlock,void * m,void * abstime)951 TSAN_INTERCEPTOR(int, pthread_rwlock_timedwrlock, void *m, void *abstime) {
952 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_timedwrlock, m, abstime);
953 int res = REAL(pthread_rwlock_timedwrlock)(m, abstime);
954 if (res == 0) {
955 MutexLock(thr, pc, (uptr)m);
956 }
957 return res;
958 }
959
TSAN_INTERCEPTOR(int,pthread_rwlock_unlock,void * m)960 TSAN_INTERCEPTOR(int, pthread_rwlock_unlock, void *m) {
961 SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_unlock, m);
962 MutexReadOrWriteUnlock(thr, pc, (uptr)m);
963 int res = REAL(pthread_rwlock_unlock)(m);
964 return res;
965 }
966
967 // libpthread.so contains several versions of pthread_cond_init symbol.
968 // When we just dlsym() it, we get the wrong (old) version.
969 /*
970 TSAN_INTERCEPTOR(int, pthread_cond_init, void *c, void *a) {
971 SCOPED_TSAN_INTERCEPTOR(pthread_cond_init, c, a);
972 int res = REAL(pthread_cond_init)(c, a);
973 return res;
974 }
975 */
976
TSAN_INTERCEPTOR(int,pthread_cond_destroy,void * c)977 TSAN_INTERCEPTOR(int, pthread_cond_destroy, void *c) {
978 SCOPED_TSAN_INTERCEPTOR(pthread_cond_destroy, c);
979 int res = REAL(pthread_cond_destroy)(c);
980 return res;
981 }
982
TSAN_INTERCEPTOR(int,pthread_cond_signal,void * c)983 TSAN_INTERCEPTOR(int, pthread_cond_signal, void *c) {
984 SCOPED_TSAN_INTERCEPTOR(pthread_cond_signal, c);
985 int res = REAL(pthread_cond_signal)(c);
986 return res;
987 }
988
TSAN_INTERCEPTOR(int,pthread_cond_broadcast,void * c)989 TSAN_INTERCEPTOR(int, pthread_cond_broadcast, void *c) {
990 SCOPED_TSAN_INTERCEPTOR(pthread_cond_broadcast, c);
991 int res = REAL(pthread_cond_broadcast)(c);
992 return res;
993 }
994
TSAN_INTERCEPTOR(int,pthread_cond_wait,void * c,void * m)995 TSAN_INTERCEPTOR(int, pthread_cond_wait, void *c, void *m) {
996 SCOPED_TSAN_INTERCEPTOR(pthread_cond_wait, c, m);
997 MutexUnlock(thr, pc, (uptr)m);
998 int res = REAL(pthread_cond_wait)(c, m);
999 MutexLock(thr, pc, (uptr)m);
1000 return res;
1001 }
1002
TSAN_INTERCEPTOR(int,pthread_cond_timedwait,void * c,void * m,void * abstime)1003 TSAN_INTERCEPTOR(int, pthread_cond_timedwait, void *c, void *m, void *abstime) {
1004 SCOPED_TSAN_INTERCEPTOR(pthread_cond_timedwait, c, m, abstime);
1005 MutexUnlock(thr, pc, (uptr)m);
1006 int res = REAL(pthread_cond_timedwait)(c, m, abstime);
1007 MutexLock(thr, pc, (uptr)m);
1008 return res;
1009 }
1010
TSAN_INTERCEPTOR(int,pthread_barrier_init,void * b,void * a,unsigned count)1011 TSAN_INTERCEPTOR(int, pthread_barrier_init, void *b, void *a, unsigned count) {
1012 SCOPED_TSAN_INTERCEPTOR(pthread_barrier_init, b, a, count);
1013 MemoryWrite(thr, pc, (uptr)b, kSizeLog1);
1014 int res = REAL(pthread_barrier_init)(b, a, count);
1015 return res;
1016 }
1017
TSAN_INTERCEPTOR(int,pthread_barrier_destroy,void * b)1018 TSAN_INTERCEPTOR(int, pthread_barrier_destroy, void *b) {
1019 SCOPED_TSAN_INTERCEPTOR(pthread_barrier_destroy, b);
1020 MemoryWrite(thr, pc, (uptr)b, kSizeLog1);
1021 int res = REAL(pthread_barrier_destroy)(b);
1022 return res;
1023 }
1024
TSAN_INTERCEPTOR(int,pthread_barrier_wait,void * b)1025 TSAN_INTERCEPTOR(int, pthread_barrier_wait, void *b) {
1026 SCOPED_TSAN_INTERCEPTOR(pthread_barrier_wait, b);
1027 Release(thr, pc, (uptr)b);
1028 MemoryRead(thr, pc, (uptr)b, kSizeLog1);
1029 int res = REAL(pthread_barrier_wait)(b);
1030 MemoryRead(thr, pc, (uptr)b, kSizeLog1);
1031 if (res == 0 || res == PTHREAD_BARRIER_SERIAL_THREAD) {
1032 Acquire(thr, pc, (uptr)b);
1033 }
1034 return res;
1035 }
1036
TSAN_INTERCEPTOR(int,pthread_once,void * o,void (* f)())1037 TSAN_INTERCEPTOR(int, pthread_once, void *o, void (*f)()) {
1038 SCOPED_TSAN_INTERCEPTOR(pthread_once, o, f);
1039 if (o == 0 || f == 0)
1040 return EINVAL;
1041 atomic_uint32_t *a = static_cast<atomic_uint32_t*>(o);
1042 u32 v = atomic_load(a, memory_order_acquire);
1043 if (v == 0 && atomic_compare_exchange_strong(a, &v, 1,
1044 memory_order_relaxed)) {
1045 const int old_in_rtl = thr->in_rtl;
1046 thr->in_rtl = 0;
1047 (*f)();
1048 CHECK_EQ(thr->in_rtl, 0);
1049 thr->in_rtl = old_in_rtl;
1050 Release(thr, pc, (uptr)o);
1051 atomic_store(a, 2, memory_order_release);
1052 } else {
1053 while (v != 2) {
1054 pthread_yield();
1055 v = atomic_load(a, memory_order_acquire);
1056 }
1057 Acquire(thr, pc, (uptr)o);
1058 }
1059 return 0;
1060 }
1061
TSAN_INTERCEPTOR(int,sem_init,void * s,int pshared,unsigned value)1062 TSAN_INTERCEPTOR(int, sem_init, void *s, int pshared, unsigned value) {
1063 SCOPED_TSAN_INTERCEPTOR(sem_init, s, pshared, value);
1064 int res = REAL(sem_init)(s, pshared, value);
1065 return res;
1066 }
1067
TSAN_INTERCEPTOR(int,sem_destroy,void * s)1068 TSAN_INTERCEPTOR(int, sem_destroy, void *s) {
1069 SCOPED_TSAN_INTERCEPTOR(sem_destroy, s);
1070 int res = REAL(sem_destroy)(s);
1071 return res;
1072 }
1073
TSAN_INTERCEPTOR(int,sem_wait,void * s)1074 TSAN_INTERCEPTOR(int, sem_wait, void *s) {
1075 SCOPED_TSAN_INTERCEPTOR(sem_wait, s);
1076 int res = BLOCK_REAL(sem_wait)(s);
1077 if (res == 0) {
1078 Acquire(thr, pc, (uptr)s);
1079 }
1080 return res;
1081 }
1082
TSAN_INTERCEPTOR(int,sem_trywait,void * s)1083 TSAN_INTERCEPTOR(int, sem_trywait, void *s) {
1084 SCOPED_TSAN_INTERCEPTOR(sem_trywait, s);
1085 int res = BLOCK_REAL(sem_trywait)(s);
1086 if (res == 0) {
1087 Acquire(thr, pc, (uptr)s);
1088 }
1089 return res;
1090 }
1091
TSAN_INTERCEPTOR(int,sem_timedwait,void * s,void * abstime)1092 TSAN_INTERCEPTOR(int, sem_timedwait, void *s, void *abstime) {
1093 SCOPED_TSAN_INTERCEPTOR(sem_timedwait, s, abstime);
1094 int res = BLOCK_REAL(sem_timedwait)(s, abstime);
1095 if (res == 0) {
1096 Acquire(thr, pc, (uptr)s);
1097 }
1098 return res;
1099 }
1100
TSAN_INTERCEPTOR(int,sem_post,void * s)1101 TSAN_INTERCEPTOR(int, sem_post, void *s) {
1102 SCOPED_TSAN_INTERCEPTOR(sem_post, s);
1103 Release(thr, pc, (uptr)s);
1104 int res = REAL(sem_post)(s);
1105 return res;
1106 }
1107
TSAN_INTERCEPTOR(int,sem_getvalue,void * s,int * sval)1108 TSAN_INTERCEPTOR(int, sem_getvalue, void *s, int *sval) {
1109 SCOPED_TSAN_INTERCEPTOR(sem_getvalue, s, sval);
1110 int res = REAL(sem_getvalue)(s, sval);
1111 if (res == 0) {
1112 Acquire(thr, pc, (uptr)s);
1113 }
1114 return res;
1115 }
1116
TSAN_INTERCEPTOR(int,__xstat,int version,const char * path,void * buf)1117 TSAN_INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) {
1118 SCOPED_TSAN_INTERCEPTOR(__xstat, version, path, buf);
1119 return REAL(__xstat)(version, path, buf);
1120 }
1121
TSAN_INTERCEPTOR(int,stat,const char * path,void * buf)1122 TSAN_INTERCEPTOR(int, stat, const char *path, void *buf) {
1123 SCOPED_TSAN_INTERCEPTOR(__xstat, 0, path, buf);
1124 return REAL(__xstat)(0, path, buf);
1125 }
1126
TSAN_INTERCEPTOR(int,__xstat64,int version,const char * path,void * buf)1127 TSAN_INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) {
1128 SCOPED_TSAN_INTERCEPTOR(__xstat64, version, path, buf);
1129 return REAL(__xstat64)(version, path, buf);
1130 }
1131
TSAN_INTERCEPTOR(int,stat64,const char * path,void * buf)1132 TSAN_INTERCEPTOR(int, stat64, const char *path, void *buf) {
1133 SCOPED_TSAN_INTERCEPTOR(__xstat64, 0, path, buf);
1134 return REAL(__xstat64)(0, path, buf);
1135 }
1136
TSAN_INTERCEPTOR(int,__lxstat,int version,const char * path,void * buf)1137 TSAN_INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) {
1138 SCOPED_TSAN_INTERCEPTOR(__lxstat, version, path, buf);
1139 return REAL(__lxstat)(version, path, buf);
1140 }
1141
TSAN_INTERCEPTOR(int,lstat,const char * path,void * buf)1142 TSAN_INTERCEPTOR(int, lstat, const char *path, void *buf) {
1143 SCOPED_TSAN_INTERCEPTOR(__lxstat, 0, path, buf);
1144 return REAL(__lxstat)(0, path, buf);
1145 }
1146
TSAN_INTERCEPTOR(int,__lxstat64,int version,const char * path,void * buf)1147 TSAN_INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) {
1148 SCOPED_TSAN_INTERCEPTOR(__lxstat64, version, path, buf);
1149 return REAL(__lxstat64)(version, path, buf);
1150 }
1151
TSAN_INTERCEPTOR(int,lstat64,const char * path,void * buf)1152 TSAN_INTERCEPTOR(int, lstat64, const char *path, void *buf) {
1153 SCOPED_TSAN_INTERCEPTOR(__lxstat64, 0, path, buf);
1154 return REAL(__lxstat64)(0, path, buf);
1155 }
1156
TSAN_INTERCEPTOR(int,__fxstat,int version,int fd,void * buf)1157 TSAN_INTERCEPTOR(int, __fxstat, int version, int fd, void *buf) {
1158 SCOPED_TSAN_INTERCEPTOR(__fxstat, version, fd, buf);
1159 if (fd > 0)
1160 FdAccess(thr, pc, fd);
1161 return REAL(__fxstat)(version, fd, buf);
1162 }
1163
TSAN_INTERCEPTOR(int,fstat,int fd,void * buf)1164 TSAN_INTERCEPTOR(int, fstat, int fd, void *buf) {
1165 SCOPED_TSAN_INTERCEPTOR(__fxstat, 0, fd, buf);
1166 if (fd > 0)
1167 FdAccess(thr, pc, fd);
1168 return REAL(__fxstat)(0, fd, buf);
1169 }
1170
TSAN_INTERCEPTOR(int,__fxstat64,int version,int fd,void * buf)1171 TSAN_INTERCEPTOR(int, __fxstat64, int version, int fd, void *buf) {
1172 SCOPED_TSAN_INTERCEPTOR(__fxstat64, version, fd, buf);
1173 if (fd > 0)
1174 FdAccess(thr, pc, fd);
1175 return REAL(__fxstat64)(version, fd, buf);
1176 }
1177
TSAN_INTERCEPTOR(int,fstat64,int fd,void * buf)1178 TSAN_INTERCEPTOR(int, fstat64, int fd, void *buf) {
1179 SCOPED_TSAN_INTERCEPTOR(__fxstat64, 0, fd, buf);
1180 if (fd > 0)
1181 FdAccess(thr, pc, fd);
1182 return REAL(__fxstat64)(0, fd, buf);
1183 }
1184
TSAN_INTERCEPTOR(int,open,const char * name,int flags,int mode)1185 TSAN_INTERCEPTOR(int, open, const char *name, int flags, int mode) {
1186 SCOPED_TSAN_INTERCEPTOR(open, name, flags, mode);
1187 int fd = REAL(open)(name, flags, mode);
1188 if (fd >= 0)
1189 FdFileCreate(thr, pc, fd);
1190 return fd;
1191 }
1192
TSAN_INTERCEPTOR(int,open64,const char * name,int flags,int mode)1193 TSAN_INTERCEPTOR(int, open64, const char *name, int flags, int mode) {
1194 SCOPED_TSAN_INTERCEPTOR(open64, name, flags, mode);
1195 int fd = REAL(open64)(name, flags, mode);
1196 if (fd >= 0)
1197 FdFileCreate(thr, pc, fd);
1198 return fd;
1199 }
1200
TSAN_INTERCEPTOR(int,creat,const char * name,int mode)1201 TSAN_INTERCEPTOR(int, creat, const char *name, int mode) {
1202 SCOPED_TSAN_INTERCEPTOR(creat, name, mode);
1203 int fd = REAL(creat)(name, mode);
1204 if (fd >= 0)
1205 FdFileCreate(thr, pc, fd);
1206 return fd;
1207 }
1208
TSAN_INTERCEPTOR(int,creat64,const char * name,int mode)1209 TSAN_INTERCEPTOR(int, creat64, const char *name, int mode) {
1210 SCOPED_TSAN_INTERCEPTOR(creat64, name, mode);
1211 int fd = REAL(creat64)(name, mode);
1212 if (fd >= 0)
1213 FdFileCreate(thr, pc, fd);
1214 return fd;
1215 }
1216
TSAN_INTERCEPTOR(int,dup,int oldfd)1217 TSAN_INTERCEPTOR(int, dup, int oldfd) {
1218 SCOPED_TSAN_INTERCEPTOR(dup, oldfd);
1219 int newfd = REAL(dup)(oldfd);
1220 if (oldfd >= 0 && newfd >= 0 && newfd != oldfd)
1221 FdDup(thr, pc, oldfd, newfd);
1222 return newfd;
1223 }
1224
TSAN_INTERCEPTOR(int,dup2,int oldfd,int newfd)1225 TSAN_INTERCEPTOR(int, dup2, int oldfd, int newfd) {
1226 SCOPED_TSAN_INTERCEPTOR(dup2, oldfd, newfd);
1227 int newfd2 = REAL(dup2)(oldfd, newfd);
1228 if (oldfd >= 0 && newfd2 >= 0 && newfd2 != oldfd)
1229 FdDup(thr, pc, oldfd, newfd2);
1230 return newfd2;
1231 }
1232
TSAN_INTERCEPTOR(int,dup3,int oldfd,int newfd,int flags)1233 TSAN_INTERCEPTOR(int, dup3, int oldfd, int newfd, int flags) {
1234 SCOPED_TSAN_INTERCEPTOR(dup3, oldfd, newfd, flags);
1235 int newfd2 = REAL(dup3)(oldfd, newfd, flags);
1236 if (oldfd >= 0 && newfd2 >= 0 && newfd2 != oldfd)
1237 FdDup(thr, pc, oldfd, newfd2);
1238 return newfd2;
1239 }
1240
TSAN_INTERCEPTOR(int,eventfd,unsigned initval,int flags)1241 TSAN_INTERCEPTOR(int, eventfd, unsigned initval, int flags) {
1242 SCOPED_TSAN_INTERCEPTOR(eventfd, initval, flags);
1243 int fd = REAL(eventfd)(initval, flags);
1244 if (fd >= 0)
1245 FdEventCreate(thr, pc, fd);
1246 return fd;
1247 }
1248
TSAN_INTERCEPTOR(int,signalfd,int fd,void * mask,int flags)1249 TSAN_INTERCEPTOR(int, signalfd, int fd, void *mask, int flags) {
1250 SCOPED_TSAN_INTERCEPTOR(signalfd, fd, mask, flags);
1251 if (fd >= 0)
1252 FdClose(thr, pc, fd);
1253 fd = REAL(signalfd)(fd, mask, flags);
1254 if (fd >= 0)
1255 FdSignalCreate(thr, pc, fd);
1256 return fd;
1257 }
1258
TSAN_INTERCEPTOR(int,inotify_init,int fake)1259 TSAN_INTERCEPTOR(int, inotify_init, int fake) {
1260 SCOPED_TSAN_INTERCEPTOR(inotify_init, fake);
1261 int fd = REAL(inotify_init)(fake);
1262 if (fd >= 0)
1263 FdInotifyCreate(thr, pc, fd);
1264 return fd;
1265 }
1266
TSAN_INTERCEPTOR(int,inotify_init1,int flags)1267 TSAN_INTERCEPTOR(int, inotify_init1, int flags) {
1268 SCOPED_TSAN_INTERCEPTOR(inotify_init1, flags);
1269 int fd = REAL(inotify_init1)(flags);
1270 if (fd >= 0)
1271 FdInotifyCreate(thr, pc, fd);
1272 return fd;
1273 }
1274
TSAN_INTERCEPTOR(int,socket,int domain,int type,int protocol)1275 TSAN_INTERCEPTOR(int, socket, int domain, int type, int protocol) {
1276 SCOPED_TSAN_INTERCEPTOR(socket, domain, type, protocol);
1277 int fd = REAL(socket)(domain, type, protocol);
1278 if (fd >= 0)
1279 FdSocketCreate(thr, pc, fd);
1280 return fd;
1281 }
1282
TSAN_INTERCEPTOR(int,socketpair,int domain,int type,int protocol,int * fd)1283 TSAN_INTERCEPTOR(int, socketpair, int domain, int type, int protocol, int *fd) {
1284 SCOPED_TSAN_INTERCEPTOR(socketpair, domain, type, protocol, fd);
1285 int res = REAL(socketpair)(domain, type, protocol, fd);
1286 if (res == 0 && fd[0] >= 0 && fd[1] >= 0)
1287 FdPipeCreate(thr, pc, fd[0], fd[1]);
1288 return res;
1289 }
1290
TSAN_INTERCEPTOR(int,connect,int fd,void * addr,unsigned addrlen)1291 TSAN_INTERCEPTOR(int, connect, int fd, void *addr, unsigned addrlen) {
1292 SCOPED_TSAN_INTERCEPTOR(connect, fd, addr, addrlen);
1293 FdSocketConnecting(thr, pc, fd);
1294 int res = REAL(connect)(fd, addr, addrlen);
1295 if (res == 0 && fd >= 0)
1296 FdSocketConnect(thr, pc, fd);
1297 return res;
1298 }
1299
TSAN_INTERCEPTOR(int,bind,int fd,void * addr,unsigned addrlen)1300 TSAN_INTERCEPTOR(int, bind, int fd, void *addr, unsigned addrlen) {
1301 SCOPED_TSAN_INTERCEPTOR(bind, fd, addr, addrlen);
1302 int res = REAL(bind)(fd, addr, addrlen);
1303 if (fd > 0 && res == 0)
1304 FdAccess(thr, pc, fd);
1305 return res;
1306 }
1307
TSAN_INTERCEPTOR(int,listen,int fd,int backlog)1308 TSAN_INTERCEPTOR(int, listen, int fd, int backlog) {
1309 SCOPED_TSAN_INTERCEPTOR(listen, fd, backlog);
1310 int res = REAL(listen)(fd, backlog);
1311 if (fd > 0 && res == 0)
1312 FdAccess(thr, pc, fd);
1313 return res;
1314 }
1315
TSAN_INTERCEPTOR(int,accept,int fd,void * addr,unsigned * addrlen)1316 TSAN_INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) {
1317 SCOPED_TSAN_INTERCEPTOR(accept, fd, addr, addrlen);
1318 int fd2 = REAL(accept)(fd, addr, addrlen);
1319 if (fd >= 0 && fd2 >= 0)
1320 FdSocketAccept(thr, pc, fd, fd2);
1321 return fd2;
1322 }
1323
TSAN_INTERCEPTOR(int,accept4,int fd,void * addr,unsigned * addrlen,int f)1324 TSAN_INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) {
1325 SCOPED_TSAN_INTERCEPTOR(accept4, fd, addr, addrlen, f);
1326 int fd2 = REAL(accept4)(fd, addr, addrlen, f);
1327 if (fd >= 0 && fd2 >= 0)
1328 FdSocketAccept(thr, pc, fd, fd2);
1329 return fd2;
1330 }
1331
TSAN_INTERCEPTOR(int,epoll_create,int size)1332 TSAN_INTERCEPTOR(int, epoll_create, int size) {
1333 SCOPED_TSAN_INTERCEPTOR(epoll_create, size);
1334 int fd = REAL(epoll_create)(size);
1335 if (fd >= 0)
1336 FdPollCreate(thr, pc, fd);
1337 return fd;
1338 }
1339
TSAN_INTERCEPTOR(int,epoll_create1,int flags)1340 TSAN_INTERCEPTOR(int, epoll_create1, int flags) {
1341 SCOPED_TSAN_INTERCEPTOR(epoll_create1, flags);
1342 int fd = REAL(epoll_create1)(flags);
1343 if (fd >= 0)
1344 FdPollCreate(thr, pc, fd);
1345 return fd;
1346 }
1347
TSAN_INTERCEPTOR(int,close,int fd)1348 TSAN_INTERCEPTOR(int, close, int fd) {
1349 SCOPED_TSAN_INTERCEPTOR(close, fd);
1350 if (fd >= 0)
1351 FdClose(thr, pc, fd);
1352 return REAL(close)(fd);
1353 }
1354
TSAN_INTERCEPTOR(int,__close,int fd)1355 TSAN_INTERCEPTOR(int, __close, int fd) {
1356 SCOPED_TSAN_INTERCEPTOR(__close, fd);
1357 if (fd >= 0)
1358 FdClose(thr, pc, fd);
1359 return REAL(__close)(fd);
1360 }
1361
1362 // glibc guts
TSAN_INTERCEPTOR(void,__res_iclose,void * state,bool free_addr)1363 TSAN_INTERCEPTOR(void, __res_iclose, void *state, bool free_addr) {
1364 SCOPED_TSAN_INTERCEPTOR(__res_iclose, state, free_addr);
1365 int fds[64];
1366 int cnt = ExtractResolvFDs(state, fds, ARRAY_SIZE(fds));
1367 for (int i = 0; i < cnt; i++) {
1368 if (fds[i] > 0)
1369 FdClose(thr, pc, fds[i]);
1370 }
1371 REAL(__res_iclose)(state, free_addr);
1372 }
1373
TSAN_INTERCEPTOR(int,pipe,int * pipefd)1374 TSAN_INTERCEPTOR(int, pipe, int *pipefd) {
1375 SCOPED_TSAN_INTERCEPTOR(pipe, pipefd);
1376 int res = REAL(pipe)(pipefd);
1377 if (res == 0 && pipefd[0] >= 0 && pipefd[1] >= 0)
1378 FdPipeCreate(thr, pc, pipefd[0], pipefd[1]);
1379 return res;
1380 }
1381
TSAN_INTERCEPTOR(int,pipe2,int * pipefd,int flags)1382 TSAN_INTERCEPTOR(int, pipe2, int *pipefd, int flags) {
1383 SCOPED_TSAN_INTERCEPTOR(pipe2, pipefd, flags);
1384 int res = REAL(pipe2)(pipefd, flags);
1385 if (res == 0 && pipefd[0] >= 0 && pipefd[1] >= 0)
1386 FdPipeCreate(thr, pc, pipefd[0], pipefd[1]);
1387 return res;
1388 }
1389
TSAN_INTERCEPTOR(long_t,readv,int fd,void * vec,int cnt)1390 TSAN_INTERCEPTOR(long_t, readv, int fd, void *vec, int cnt) {
1391 SCOPED_TSAN_INTERCEPTOR(readv, fd, vec, cnt);
1392 int res = REAL(readv)(fd, vec, cnt);
1393 if (res >= 0 && fd >= 0) {
1394 FdAcquire(thr, pc, fd);
1395 }
1396 return res;
1397 }
1398
TSAN_INTERCEPTOR(long_t,preadv64,int fd,void * vec,int cnt,u64 off)1399 TSAN_INTERCEPTOR(long_t, preadv64, int fd, void *vec, int cnt, u64 off) {
1400 SCOPED_TSAN_INTERCEPTOR(preadv64, fd, vec, cnt, off);
1401 int res = REAL(preadv64)(fd, vec, cnt, off);
1402 if (res >= 0 && fd >= 0) {
1403 FdAcquire(thr, pc, fd);
1404 }
1405 return res;
1406 }
1407
TSAN_INTERCEPTOR(long_t,writev,int fd,void * vec,int cnt)1408 TSAN_INTERCEPTOR(long_t, writev, int fd, void *vec, int cnt) {
1409 SCOPED_TSAN_INTERCEPTOR(writev, fd, vec, cnt);
1410 if (fd >= 0)
1411 FdRelease(thr, pc, fd);
1412 int res = REAL(writev)(fd, vec, cnt);
1413 return res;
1414 }
1415
TSAN_INTERCEPTOR(long_t,pwritev64,int fd,void * vec,int cnt,u64 off)1416 TSAN_INTERCEPTOR(long_t, pwritev64, int fd, void *vec, int cnt, u64 off) {
1417 SCOPED_TSAN_INTERCEPTOR(pwritev64, fd, vec, cnt, off);
1418 if (fd >= 0)
1419 FdRelease(thr, pc, fd);
1420 int res = REAL(pwritev64)(fd, vec, cnt, off);
1421 return res;
1422 }
1423
TSAN_INTERCEPTOR(long_t,send,int fd,void * buf,long_t len,int flags)1424 TSAN_INTERCEPTOR(long_t, send, int fd, void *buf, long_t len, int flags) {
1425 SCOPED_TSAN_INTERCEPTOR(send, fd, buf, len, flags);
1426 if (fd >= 0)
1427 FdRelease(thr, pc, fd);
1428 int res = REAL(send)(fd, buf, len, flags);
1429 return res;
1430 }
1431
TSAN_INTERCEPTOR(long_t,sendmsg,int fd,void * msg,int flags)1432 TSAN_INTERCEPTOR(long_t, sendmsg, int fd, void *msg, int flags) {
1433 SCOPED_TSAN_INTERCEPTOR(sendmsg, fd, msg, flags);
1434 if (fd >= 0)
1435 FdRelease(thr, pc, fd);
1436 int res = REAL(sendmsg)(fd, msg, flags);
1437 return res;
1438 }
1439
TSAN_INTERCEPTOR(long_t,recv,int fd,void * buf,long_t len,int flags)1440 TSAN_INTERCEPTOR(long_t, recv, int fd, void *buf, long_t len, int flags) {
1441 SCOPED_TSAN_INTERCEPTOR(recv, fd, buf, len, flags);
1442 int res = REAL(recv)(fd, buf, len, flags);
1443 if (res >= 0 && fd >= 0) {
1444 FdAcquire(thr, pc, fd);
1445 }
1446 return res;
1447 }
1448
TSAN_INTERCEPTOR(long_t,recvmsg,int fd,void * msg,int flags)1449 TSAN_INTERCEPTOR(long_t, recvmsg, int fd, void *msg, int flags) {
1450 SCOPED_TSAN_INTERCEPTOR(recvmsg, fd, msg, flags);
1451 int res = REAL(recvmsg)(fd, msg, flags);
1452 if (res >= 0 && fd >= 0) {
1453 FdAcquire(thr, pc, fd);
1454 }
1455 return res;
1456 }
1457
TSAN_INTERCEPTOR(int,unlink,char * path)1458 TSAN_INTERCEPTOR(int, unlink, char *path) {
1459 SCOPED_TSAN_INTERCEPTOR(unlink, path);
1460 Release(thr, pc, File2addr(path));
1461 int res = REAL(unlink)(path);
1462 return res;
1463 }
1464
TSAN_INTERCEPTOR(void *,fopen,char * path,char * mode)1465 TSAN_INTERCEPTOR(void*, fopen, char *path, char *mode) {
1466 SCOPED_TSAN_INTERCEPTOR(fopen, path, mode);
1467 void *res = REAL(fopen)(path, mode);
1468 Acquire(thr, pc, File2addr(path));
1469 if (res) {
1470 int fd = fileno_unlocked(res);
1471 if (fd >= 0)
1472 FdFileCreate(thr, pc, fd);
1473 }
1474 return res;
1475 }
1476
TSAN_INTERCEPTOR(void *,freopen,char * path,char * mode,void * stream)1477 TSAN_INTERCEPTOR(void*, freopen, char *path, char *mode, void *stream) {
1478 SCOPED_TSAN_INTERCEPTOR(freopen, path, mode, stream);
1479 if (stream) {
1480 int fd = fileno_unlocked(stream);
1481 if (fd >= 0)
1482 FdClose(thr, pc, fd);
1483 }
1484 void *res = REAL(freopen)(path, mode, stream);
1485 Acquire(thr, pc, File2addr(path));
1486 if (res) {
1487 int fd = fileno_unlocked(res);
1488 if (fd >= 0)
1489 FdFileCreate(thr, pc, fd);
1490 }
1491 return res;
1492 }
1493
TSAN_INTERCEPTOR(int,fclose,void * stream)1494 TSAN_INTERCEPTOR(int, fclose, void *stream) {
1495 {
1496 SCOPED_TSAN_INTERCEPTOR(fclose, stream);
1497 if (stream) {
1498 int fd = fileno_unlocked(stream);
1499 if (fd >= 0)
1500 FdClose(thr, pc, fd);
1501 }
1502 }
1503 return REAL(fclose)(stream);
1504 }
1505
TSAN_INTERCEPTOR(uptr,fread,void * ptr,uptr size,uptr nmemb,void * f)1506 TSAN_INTERCEPTOR(uptr, fread, void *ptr, uptr size, uptr nmemb, void *f) {
1507 {
1508 SCOPED_TSAN_INTERCEPTOR(fread, ptr, size, nmemb, f);
1509 MemoryAccessRange(thr, pc, (uptr)ptr, size * nmemb, true);
1510 }
1511 return REAL(fread)(ptr, size, nmemb, f);
1512 }
1513
TSAN_INTERCEPTOR(uptr,fwrite,const void * p,uptr size,uptr nmemb,void * f)1514 TSAN_INTERCEPTOR(uptr, fwrite, const void *p, uptr size, uptr nmemb, void *f) {
1515 {
1516 SCOPED_TSAN_INTERCEPTOR(fwrite, p, size, nmemb, f);
1517 MemoryAccessRange(thr, pc, (uptr)p, size * nmemb, false);
1518 }
1519 return REAL(fwrite)(p, size, nmemb, f);
1520 }
1521
TSAN_INTERCEPTOR(int,puts,const char * s)1522 TSAN_INTERCEPTOR(int, puts, const char *s) {
1523 SCOPED_TSAN_INTERCEPTOR(puts, s);
1524 MemoryAccessRange(thr, pc, (uptr)s, internal_strlen(s), false);
1525 return REAL(puts)(s);
1526 }
1527
TSAN_INTERCEPTOR(int,rmdir,char * path)1528 TSAN_INTERCEPTOR(int, rmdir, char *path) {
1529 SCOPED_TSAN_INTERCEPTOR(rmdir, path);
1530 Release(thr, pc, Dir2addr(path));
1531 int res = REAL(rmdir)(path);
1532 return res;
1533 }
1534
TSAN_INTERCEPTOR(void *,opendir,char * path)1535 TSAN_INTERCEPTOR(void*, opendir, char *path) {
1536 SCOPED_TSAN_INTERCEPTOR(opendir, path);
1537 void *res = REAL(opendir)(path);
1538 if (res != 0)
1539 Acquire(thr, pc, Dir2addr(path));
1540 return res;
1541 }
1542
TSAN_INTERCEPTOR(int,epoll_ctl,int epfd,int op,int fd,void * ev)1543 TSAN_INTERCEPTOR(int, epoll_ctl, int epfd, int op, int fd, void *ev) {
1544 SCOPED_TSAN_INTERCEPTOR(epoll_ctl, epfd, op, fd, ev);
1545 if (op == EPOLL_CTL_ADD && epfd >= 0) {
1546 FdRelease(thr, pc, epfd);
1547 }
1548 int res = REAL(epoll_ctl)(epfd, op, fd, ev);
1549 if (fd >= 0)
1550 FdAccess(thr, pc, fd);
1551 return res;
1552 }
1553
TSAN_INTERCEPTOR(int,epoll_wait,int epfd,void * ev,int cnt,int timeout)1554 TSAN_INTERCEPTOR(int, epoll_wait, int epfd, void *ev, int cnt, int timeout) {
1555 SCOPED_TSAN_INTERCEPTOR(epoll_wait, epfd, ev, cnt, timeout);
1556 int res = BLOCK_REAL(epoll_wait)(epfd, ev, cnt, timeout);
1557 if (res > 0 && epfd >= 0) {
1558 FdAcquire(thr, pc, epfd);
1559 }
1560 return res;
1561 }
1562
TSAN_INTERCEPTOR(int,poll,void * fds,long_t nfds,int timeout)1563 TSAN_INTERCEPTOR(int, poll, void *fds, long_t nfds, int timeout) {
1564 SCOPED_TSAN_INTERCEPTOR(poll, fds, nfds, timeout);
1565 int res = BLOCK_REAL(poll)(fds, nfds, timeout);
1566 return res;
1567 }
1568
rtl_generic_sighandler(bool sigact,int sig,my_siginfo_t * info,void * ctx)1569 static void ALWAYS_INLINE rtl_generic_sighandler(bool sigact, int sig,
1570 my_siginfo_t *info, void *ctx) {
1571 ThreadState *thr = cur_thread();
1572 SignalContext *sctx = SigCtx(thr);
1573 // Don't mess with synchronous signals.
1574 if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
1575 sig == SIGABRT || sig == SIGFPE || sig == SIGPIPE ||
1576 // If we are sending signal to ourselves, we must process it now.
1577 (sctx && sig == sctx->int_signal_send) ||
1578 // If we are in blocking function, we can safely process it now
1579 // (but check if we are in a recursive interceptor,
1580 // i.e. pthread_join()->munmap()).
1581 (sctx && sctx->in_blocking_func == 1 && thr->in_rtl == 1)) {
1582 CHECK(thr->in_rtl == 0 || thr->in_rtl == 1);
1583 int in_rtl = thr->in_rtl;
1584 thr->in_rtl = 0;
1585 CHECK_EQ(thr->in_signal_handler, false);
1586 thr->in_signal_handler = true;
1587 if (sigact)
1588 sigactions[sig].sa_sigaction(sig, info, ctx);
1589 else
1590 sigactions[sig].sa_handler(sig);
1591 CHECK_EQ(thr->in_signal_handler, true);
1592 thr->in_signal_handler = false;
1593 thr->in_rtl = in_rtl;
1594 return;
1595 }
1596
1597 if (sctx == 0)
1598 return;
1599 SignalDesc *signal = &sctx->pending_signals[sig];
1600 if (signal->armed == false) {
1601 signal->armed = true;
1602 signal->sigaction = sigact;
1603 if (info)
1604 internal_memcpy(&signal->siginfo, info, sizeof(*info));
1605 if (ctx)
1606 internal_memcpy(&signal->ctx, ctx, sizeof(signal->ctx));
1607 sctx->pending_signal_count++;
1608 }
1609 }
1610
rtl_sighandler(int sig)1611 static void rtl_sighandler(int sig) {
1612 rtl_generic_sighandler(false, sig, 0, 0);
1613 }
1614
rtl_sigaction(int sig,my_siginfo_t * info,void * ctx)1615 static void rtl_sigaction(int sig, my_siginfo_t *info, void *ctx) {
1616 rtl_generic_sighandler(true, sig, info, ctx);
1617 }
1618
TSAN_INTERCEPTOR(int,sigaction,int sig,sigaction_t * act,sigaction_t * old)1619 TSAN_INTERCEPTOR(int, sigaction, int sig, sigaction_t *act, sigaction_t *old) {
1620 SCOPED_TSAN_INTERCEPTOR(sigaction, sig, act, old);
1621 if (old)
1622 internal_memcpy(old, &sigactions[sig], sizeof(*old));
1623 if (act == 0)
1624 return 0;
1625 internal_memcpy(&sigactions[sig], act, sizeof(*act));
1626 sigaction_t newact;
1627 internal_memcpy(&newact, act, sizeof(newact));
1628 sigfillset(&newact.sa_mask);
1629 if (act->sa_handler != SIG_IGN && act->sa_handler != SIG_DFL) {
1630 if (newact.sa_flags & SA_SIGINFO)
1631 newact.sa_sigaction = rtl_sigaction;
1632 else
1633 newact.sa_handler = rtl_sighandler;
1634 }
1635 int res = REAL(sigaction)(sig, &newact, 0);
1636 return res;
1637 }
1638
TSAN_INTERCEPTOR(sighandler_t,signal,int sig,sighandler_t h)1639 TSAN_INTERCEPTOR(sighandler_t, signal, int sig, sighandler_t h) {
1640 sigaction_t act;
1641 act.sa_handler = h;
1642 REAL(memset)(&act.sa_mask, -1, sizeof(act.sa_mask));
1643 act.sa_flags = 0;
1644 sigaction_t old;
1645 int res = sigaction(sig, &act, &old);
1646 if (res)
1647 return SIG_ERR;
1648 return old.sa_handler;
1649 }
1650
TSAN_INTERCEPTOR(int,raise,int sig)1651 TSAN_INTERCEPTOR(int, raise, int sig) {
1652 SCOPED_TSAN_INTERCEPTOR(raise, sig);
1653 SignalContext *sctx = SigCtx(thr);
1654 CHECK_NE(sctx, 0);
1655 int prev = sctx->int_signal_send;
1656 sctx->int_signal_send = sig;
1657 int res = REAL(raise)(sig);
1658 CHECK_EQ(sctx->int_signal_send, sig);
1659 sctx->int_signal_send = prev;
1660 return res;
1661 }
1662
TSAN_INTERCEPTOR(int,kill,int pid,int sig)1663 TSAN_INTERCEPTOR(int, kill, int pid, int sig) {
1664 SCOPED_TSAN_INTERCEPTOR(kill, pid, sig);
1665 SignalContext *sctx = SigCtx(thr);
1666 CHECK_NE(sctx, 0);
1667 int prev = sctx->int_signal_send;
1668 if (pid == GetPid()) {
1669 sctx->int_signal_send = sig;
1670 }
1671 int res = REAL(kill)(pid, sig);
1672 if (pid == GetPid()) {
1673 CHECK_EQ(sctx->int_signal_send, sig);
1674 sctx->int_signal_send = prev;
1675 }
1676 return res;
1677 }
1678
TSAN_INTERCEPTOR(int,pthread_kill,void * tid,int sig)1679 TSAN_INTERCEPTOR(int, pthread_kill, void *tid, int sig) {
1680 SCOPED_TSAN_INTERCEPTOR(pthread_kill, tid, sig);
1681 SignalContext *sctx = SigCtx(thr);
1682 CHECK_NE(sctx, 0);
1683 int prev = sctx->int_signal_send;
1684 if (tid == pthread_self()) {
1685 sctx->int_signal_send = sig;
1686 }
1687 int res = REAL(pthread_kill)(tid, sig);
1688 if (tid == pthread_self()) {
1689 CHECK_EQ(sctx->int_signal_send, sig);
1690 sctx->int_signal_send = prev;
1691 }
1692 return res;
1693 }
1694
TSAN_INTERCEPTOR(int,gettimeofday,void * tv,void * tz)1695 TSAN_INTERCEPTOR(int, gettimeofday, void *tv, void *tz) {
1696 SCOPED_TSAN_INTERCEPTOR(gettimeofday, tv, tz);
1697 // It's intercepted merely to process pending signals.
1698 return REAL(gettimeofday)(tv, tz);
1699 }
1700
1701 // Linux kernel has a bug that leads to kernel deadlock if a process
1702 // maps TBs of memory and then calls mlock().
MlockIsUnsupported()1703 static void MlockIsUnsupported() {
1704 static atomic_uint8_t printed;
1705 if (atomic_exchange(&printed, 1, memory_order_relaxed))
1706 return;
1707 Printf("INFO: ThreadSanitizer ignores mlock/mlockall/munlock/munlockall\n");
1708 }
1709
TSAN_INTERCEPTOR(int,mlock,const void * addr,uptr len)1710 TSAN_INTERCEPTOR(int, mlock, const void *addr, uptr len) {
1711 MlockIsUnsupported();
1712 return 0;
1713 }
1714
TSAN_INTERCEPTOR(int,munlock,const void * addr,uptr len)1715 TSAN_INTERCEPTOR(int, munlock, const void *addr, uptr len) {
1716 MlockIsUnsupported();
1717 return 0;
1718 }
1719
TSAN_INTERCEPTOR(int,mlockall,int flags)1720 TSAN_INTERCEPTOR(int, mlockall, int flags) {
1721 MlockIsUnsupported();
1722 return 0;
1723 }
1724
TSAN_INTERCEPTOR(int,munlockall,void)1725 TSAN_INTERCEPTOR(int, munlockall, void) {
1726 MlockIsUnsupported();
1727 return 0;
1728 }
1729
TSAN_INTERCEPTOR(int,fork,int fake)1730 TSAN_INTERCEPTOR(int, fork, int fake) {
1731 SCOPED_TSAN_INTERCEPTOR(fork, fake);
1732 // It's intercepted merely to process pending signals.
1733 int pid = REAL(fork)(fake);
1734 if (pid == 0) {
1735 // child
1736 FdOnFork(thr, pc);
1737 } else if (pid > 0) {
1738 // parent
1739 }
1740 return pid;
1741 }
1742
1743 struct TsanInterceptorContext {
1744 ThreadState *thr;
1745 const uptr caller_pc;
1746 const uptr pc;
1747 };
1748
1749 #define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \
1750 MemoryAccessRange(((TsanInterceptorContext*)ctx)->thr, \
1751 ((TsanInterceptorContext*)ctx)->pc, \
1752 (uptr)ptr, size, true)
1753 #define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \
1754 MemoryAccessRange(((TsanInterceptorContext*)ctx)->thr, \
1755 ((TsanInterceptorContext*)ctx)->pc, \
1756 (uptr)ptr, size, false)
1757 #define COMMON_INTERCEPTOR_ENTER(ctx, func, ...) \
1758 SCOPED_TSAN_INTERCEPTOR(func, __VA_ARGS__) \
1759 TsanInterceptorContext _ctx = {thr, caller_pc, pc}; \
1760 ctx = (void*)&_ctx; \
1761 (void)ctx;
1762 #define COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd) \
1763 FdAcquire(((TsanInterceptorContext*)ctx)->thr, pc, fd)
1764 #define COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd) \
1765 FdRelease(((TsanInterceptorContext*)ctx)->thr, pc, fd)
1766 #define COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, name) \
1767 ThreadSetName(((TsanInterceptorContext*)ctx)->thr, name)
1768 #include "sanitizer_common/sanitizer_common_interceptors.inc"
1769
1770 namespace __tsan {
1771
ProcessPendingSignals(ThreadState * thr)1772 void ProcessPendingSignals(ThreadState *thr) {
1773 CHECK_EQ(thr->in_rtl, 0);
1774 SignalContext *sctx = SigCtx(thr);
1775 if (sctx == 0 || sctx->pending_signal_count == 0 || thr->in_signal_handler)
1776 return;
1777 Context *ctx = CTX();
1778 thr->in_signal_handler = true;
1779 sctx->pending_signal_count = 0;
1780 // These are too big for stack.
1781 static THREADLOCAL sigset_t emptyset, oldset;
1782 sigfillset(&emptyset);
1783 pthread_sigmask(SIG_SETMASK, &emptyset, &oldset);
1784 for (int sig = 0; sig < kSigCount; sig++) {
1785 SignalDesc *signal = &sctx->pending_signals[sig];
1786 if (signal->armed) {
1787 signal->armed = false;
1788 if (sigactions[sig].sa_handler != SIG_DFL
1789 && sigactions[sig].sa_handler != SIG_IGN) {
1790 // Insure that the handler does not spoil errno.
1791 const int saved_errno = errno;
1792 errno = 0;
1793 if (signal->sigaction)
1794 sigactions[sig].sa_sigaction(sig, &signal->siginfo, &signal->ctx);
1795 else
1796 sigactions[sig].sa_handler(sig);
1797 if (flags()->report_bugs && errno != 0) {
1798 ScopedInRtl in_rtl;
1799 __tsan::StackTrace stack;
1800 uptr pc = signal->sigaction ?
1801 (uptr)sigactions[sig].sa_sigaction :
1802 (uptr)sigactions[sig].sa_handler;
1803 stack.Init(&pc, 1);
1804 ThreadRegistryLock l(ctx->thread_registry);
1805 ScopedReport rep(ReportTypeErrnoInSignal);
1806 if (!IsFiredSuppression(ctx, rep, stack)) {
1807 rep.AddStack(&stack);
1808 OutputReport(ctx, rep, rep.GetReport()->stacks[0]);
1809 }
1810 }
1811 errno = saved_errno;
1812 }
1813 }
1814 }
1815 pthread_sigmask(SIG_SETMASK, &oldset, 0);
1816 CHECK_EQ(thr->in_signal_handler, true);
1817 thr->in_signal_handler = false;
1818 }
1819
unreachable()1820 static void unreachable() {
1821 Printf("FATAL: ThreadSanitizer: unreachable called\n");
1822 Die();
1823 }
1824
InitializeInterceptors()1825 void InitializeInterceptors() {
1826 CHECK_GT(cur_thread()->in_rtl, 0);
1827
1828 // We need to setup it early, because functions like dlsym() can call it.
1829 REAL(memset) = internal_memset;
1830 REAL(memcpy) = internal_memcpy;
1831 REAL(memcmp) = internal_memcmp;
1832
1833 SANITIZER_COMMON_INTERCEPTORS_INIT;
1834
1835 TSAN_INTERCEPT(longjmp);
1836 TSAN_INTERCEPT(siglongjmp);
1837
1838 TSAN_INTERCEPT(malloc);
1839 TSAN_INTERCEPT(__libc_memalign);
1840 TSAN_INTERCEPT(calloc);
1841 TSAN_INTERCEPT(realloc);
1842 TSAN_INTERCEPT(free);
1843 TSAN_INTERCEPT(cfree);
1844 TSAN_INTERCEPT(mmap);
1845 TSAN_INTERCEPT(mmap64);
1846 TSAN_INTERCEPT(munmap);
1847 TSAN_INTERCEPT(memalign);
1848 TSAN_INTERCEPT(valloc);
1849 TSAN_INTERCEPT(pvalloc);
1850 TSAN_INTERCEPT(posix_memalign);
1851
1852 TSAN_INTERCEPT(strlen);
1853 TSAN_INTERCEPT(memset);
1854 TSAN_INTERCEPT(memcpy);
1855 TSAN_INTERCEPT(strcmp);
1856 TSAN_INTERCEPT(memchr);
1857 TSAN_INTERCEPT(memrchr);
1858 TSAN_INTERCEPT(memmove);
1859 TSAN_INTERCEPT(memcmp);
1860 TSAN_INTERCEPT(strchr);
1861 TSAN_INTERCEPT(strchrnul);
1862 TSAN_INTERCEPT(strrchr);
1863 TSAN_INTERCEPT(strncmp);
1864 TSAN_INTERCEPT(strcpy); // NOLINT
1865 TSAN_INTERCEPT(strncpy);
1866 TSAN_INTERCEPT(strstr);
1867
1868 TSAN_INTERCEPT(pthread_create);
1869 TSAN_INTERCEPT(pthread_join);
1870 TSAN_INTERCEPT(pthread_detach);
1871
1872 TSAN_INTERCEPT(pthread_mutex_init);
1873 TSAN_INTERCEPT(pthread_mutex_destroy);
1874 TSAN_INTERCEPT(pthread_mutex_lock);
1875 TSAN_INTERCEPT(pthread_mutex_trylock);
1876 TSAN_INTERCEPT(pthread_mutex_timedlock);
1877 TSAN_INTERCEPT(pthread_mutex_unlock);
1878
1879 TSAN_INTERCEPT(pthread_spin_init);
1880 TSAN_INTERCEPT(pthread_spin_destroy);
1881 TSAN_INTERCEPT(pthread_spin_lock);
1882 TSAN_INTERCEPT(pthread_spin_trylock);
1883 TSAN_INTERCEPT(pthread_spin_unlock);
1884
1885 TSAN_INTERCEPT(pthread_rwlock_init);
1886 TSAN_INTERCEPT(pthread_rwlock_destroy);
1887 TSAN_INTERCEPT(pthread_rwlock_rdlock);
1888 TSAN_INTERCEPT(pthread_rwlock_tryrdlock);
1889 TSAN_INTERCEPT(pthread_rwlock_timedrdlock);
1890 TSAN_INTERCEPT(pthread_rwlock_wrlock);
1891 TSAN_INTERCEPT(pthread_rwlock_trywrlock);
1892 TSAN_INTERCEPT(pthread_rwlock_timedwrlock);
1893 TSAN_INTERCEPT(pthread_rwlock_unlock);
1894
1895 // TSAN_INTERCEPT(pthread_cond_init);
1896 TSAN_INTERCEPT(pthread_cond_destroy);
1897 TSAN_INTERCEPT(pthread_cond_signal);
1898 TSAN_INTERCEPT(pthread_cond_broadcast);
1899 TSAN_INTERCEPT(pthread_cond_wait);
1900 TSAN_INTERCEPT(pthread_cond_timedwait);
1901
1902 TSAN_INTERCEPT(pthread_barrier_init);
1903 TSAN_INTERCEPT(pthread_barrier_destroy);
1904 TSAN_INTERCEPT(pthread_barrier_wait);
1905
1906 TSAN_INTERCEPT(pthread_once);
1907
1908 TSAN_INTERCEPT(sem_init);
1909 TSAN_INTERCEPT(sem_destroy);
1910 TSAN_INTERCEPT(sem_wait);
1911 TSAN_INTERCEPT(sem_trywait);
1912 TSAN_INTERCEPT(sem_timedwait);
1913 TSAN_INTERCEPT(sem_post);
1914 TSAN_INTERCEPT(sem_getvalue);
1915
1916 TSAN_INTERCEPT(stat);
1917 TSAN_INTERCEPT(__xstat);
1918 TSAN_INTERCEPT(stat64);
1919 TSAN_INTERCEPT(__xstat64);
1920 TSAN_INTERCEPT(lstat);
1921 TSAN_INTERCEPT(__lxstat);
1922 TSAN_INTERCEPT(lstat64);
1923 TSAN_INTERCEPT(__lxstat64);
1924 TSAN_INTERCEPT(fstat);
1925 TSAN_INTERCEPT(__fxstat);
1926 TSAN_INTERCEPT(fstat64);
1927 TSAN_INTERCEPT(__fxstat64);
1928 TSAN_INTERCEPT(open);
1929 TSAN_INTERCEPT(open64);
1930 TSAN_INTERCEPT(creat);
1931 TSAN_INTERCEPT(creat64);
1932 TSAN_INTERCEPT(dup);
1933 TSAN_INTERCEPT(dup2);
1934 TSAN_INTERCEPT(dup3);
1935 TSAN_INTERCEPT(eventfd);
1936 TSAN_INTERCEPT(signalfd);
1937 TSAN_INTERCEPT(inotify_init);
1938 TSAN_INTERCEPT(inotify_init1);
1939 TSAN_INTERCEPT(socket);
1940 TSAN_INTERCEPT(socketpair);
1941 TSAN_INTERCEPT(connect);
1942 TSAN_INTERCEPT(bind);
1943 TSAN_INTERCEPT(listen);
1944 TSAN_INTERCEPT(accept);
1945 TSAN_INTERCEPT(accept4);
1946 TSAN_INTERCEPT(epoll_create);
1947 TSAN_INTERCEPT(epoll_create1);
1948 TSAN_INTERCEPT(close);
1949 TSAN_INTERCEPT(__close);
1950 TSAN_INTERCEPT(__res_iclose);
1951 TSAN_INTERCEPT(pipe);
1952 TSAN_INTERCEPT(pipe2);
1953
1954 TSAN_INTERCEPT(readv);
1955 TSAN_INTERCEPT(preadv64);
1956 TSAN_INTERCEPT(writev);
1957 TSAN_INTERCEPT(pwritev64);
1958 TSAN_INTERCEPT(send);
1959 TSAN_INTERCEPT(sendmsg);
1960 TSAN_INTERCEPT(recv);
1961 TSAN_INTERCEPT(recvmsg);
1962
1963 TSAN_INTERCEPT(unlink);
1964 TSAN_INTERCEPT(fopen);
1965 TSAN_INTERCEPT(freopen);
1966 TSAN_INTERCEPT(fclose);
1967 TSAN_INTERCEPT(fread);
1968 TSAN_INTERCEPT(fwrite);
1969 TSAN_INTERCEPT(puts);
1970 TSAN_INTERCEPT(rmdir);
1971 TSAN_INTERCEPT(opendir);
1972
1973 TSAN_INTERCEPT(epoll_ctl);
1974 TSAN_INTERCEPT(epoll_wait);
1975 TSAN_INTERCEPT(poll);
1976
1977 TSAN_INTERCEPT(sigaction);
1978 TSAN_INTERCEPT(signal);
1979 TSAN_INTERCEPT(raise);
1980 TSAN_INTERCEPT(kill);
1981 TSAN_INTERCEPT(pthread_kill);
1982 TSAN_INTERCEPT(sleep);
1983 TSAN_INTERCEPT(usleep);
1984 TSAN_INTERCEPT(nanosleep);
1985 TSAN_INTERCEPT(gettimeofday);
1986
1987 TSAN_INTERCEPT(mlock);
1988 TSAN_INTERCEPT(munlock);
1989 TSAN_INTERCEPT(mlockall);
1990 TSAN_INTERCEPT(munlockall);
1991
1992 TSAN_INTERCEPT(fork);
1993 TSAN_INTERCEPT(on_exit);
1994 TSAN_INTERCEPT(__cxa_atexit);
1995
1996 // Need to setup it, because interceptors check that the function is resolved.
1997 // But atexit is emitted directly into the module, so can't be resolved.
1998 REAL(atexit) = (int(*)(void(*)()))unreachable;
1999 atexit_ctx = new(internal_alloc(MBlockAtExit, sizeof(AtExitContext)))
2000 AtExitContext();
2001
2002 if (REAL(__cxa_atexit)(&finalize, 0, 0)) {
2003 Printf("ThreadSanitizer: failed to setup atexit callback\n");
2004 Die();
2005 }
2006
2007 if (pthread_key_create(&g_thread_finalize_key, &thread_finalize)) {
2008 Printf("ThreadSanitizer: failed to create thread key\n");
2009 Die();
2010 }
2011
2012 FdInit();
2013 }
2014
internal_start_thread(void (* func)(void * arg),void * arg)2015 void internal_start_thread(void(*func)(void *arg), void *arg) {
2016 void *th;
2017 REAL(pthread_create)(&th, 0, (void*(*)(void *arg))func, arg);
2018 REAL(pthread_detach)(th);
2019 }
2020
2021 } // namespace __tsan
2022