1 //===-- sanitizer_common_syscalls.inc ---------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // Common syscalls handlers for tools like AddressSanitizer,
10 // ThreadSanitizer, MemorySanitizer, etc.
12 // This file should be included into the tool's interceptor file,
13 // which has to define it's own macros:
14 // COMMON_SYSCALL_PRE_READ_RANGE
15 // Called in prehook for regions that will be read by the kernel and
16 // must be initialized.
17 // COMMON_SYSCALL_PRE_WRITE_RANGE
18 // Called in prehook for regions that will be written to by the kernel
19 // and must be addressable. The actual write range may be smaller than
20 // reported in the prehook. See POST_WRITE_RANGE.
21 // COMMON_SYSCALL_POST_READ_RANGE
22 // Called in posthook for regions that were read by the kernel. Does
23 // not make much sense.
24 // COMMON_SYSCALL_POST_WRITE_RANGE
25 // Called in posthook for regions that were written to by the kernel
26 // and are now initialized.
27 // COMMON_SYSCALL_ACQUIRE(addr)
28 // Acquire memory visibility from addr.
29 // COMMON_SYSCALL_RELEASE(addr)
30 // Release memory visibility to addr.
31 // COMMON_SYSCALL_FD_CLOSE(fd)
32 // Called before closing file descriptor fd.
33 // COMMON_SYSCALL_FD_ACQUIRE(fd)
34 // Acquire memory visibility from fd.
35 // COMMON_SYSCALL_FD_RELEASE(fd)
36 // Release memory visibility to fd.
37 // COMMON_SYSCALL_PRE_FORK()
38 // Called before fork syscall.
39 // COMMON_SYSCALL_POST_FORK(long res)
40 // Called after fork syscall.
41 //===----------------------------------------------------------------------===//
43 #include "sanitizer_platform.h"
46 #include "sanitizer_libc.h"
48 #define PRE_SYSCALL(name) \
49 SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_syscall_pre_impl_##name
50 #define PRE_READ(p, s) COMMON_SYSCALL_PRE_READ_RANGE(p, s)
51 #define PRE_WRITE(p, s) COMMON_SYSCALL_PRE_WRITE_RANGE(p, s)
53 #define POST_SYSCALL(name) \
54 SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_syscall_post_impl_##name
55 #define POST_READ(p, s) COMMON_SYSCALL_POST_READ_RANGE(p, s)
56 #define POST_WRITE(p, s) COMMON_SYSCALL_POST_WRITE_RANGE(p, s)
58 #ifndef COMMON_SYSCALL_ACQUIRE
59 # define COMMON_SYSCALL_ACQUIRE(addr) ((void)(addr))
62 #ifndef COMMON_SYSCALL_RELEASE
63 # define COMMON_SYSCALL_RELEASE(addr) ((void)(addr))
66 #ifndef COMMON_SYSCALL_FD_CLOSE
67 # define COMMON_SYSCALL_FD_CLOSE(fd) ((void)(fd))
70 #ifndef COMMON_SYSCALL_FD_ACQUIRE
71 # define COMMON_SYSCALL_FD_ACQUIRE(fd) ((void)(fd))
74 #ifndef COMMON_SYSCALL_FD_RELEASE
75 # define COMMON_SYSCALL_FD_RELEASE(fd) ((void)(fd))
78 #ifndef COMMON_SYSCALL_PRE_FORK
79 # define COMMON_SYSCALL_PRE_FORK() {}
82 #ifndef COMMON_SYSCALL_POST_FORK
83 # define COMMON_SYSCALL_POST_FORK(res) {}
86 // FIXME: do some kind of PRE_READ for all syscall arguments (int(s) and such).
89 struct sanitizer_kernel_iovec {
91 unsigned long iov_len;
94 struct sanitizer_kernel_msghdr {
97 struct sanitizer_kernel_iovec *msg_iov;
98 unsigned long msg_iovlen;
100 unsigned long msg_controllen;
104 struct sanitizer_kernel_mmsghdr {
105 struct sanitizer_kernel_msghdr msg_hdr;
109 struct sanitizer_kernel_timespec {
114 struct sanitizer_kernel_timeval {
119 struct sanitizer_kernel_rusage {
120 struct sanitizer_kernel_timeval ru_timeval[2];
124 struct sanitizer_kernel_sockaddr {
125 unsigned short sa_family;
129 // Real sigset size is always passed as a syscall argument.
130 // Declare it "void" to catch sizeof(kernel_sigset_t).
131 typedef void kernel_sigset_t;
133 static void kernel_write_iovec(const __sanitizer_iovec *iovec,
134 SIZE_T iovlen, SIZE_T maxlen) {
135 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
136 SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
137 POST_WRITE(iovec[i].iov_base, sz);
142 // This functions uses POST_READ, because it needs to run after syscall to know
143 // the real read range.
144 static void kernel_read_iovec(const __sanitizer_iovec *iovec,
145 SIZE_T iovlen, SIZE_T maxlen) {
146 POST_READ(iovec, sizeof(*iovec) * iovlen);
147 for (SIZE_T i = 0; i < iovlen && maxlen; ++i) {
148 SSIZE_T sz = Min(iovec[i].iov_len, maxlen);
149 POST_READ(iovec[i].iov_base, sz);
154 PRE_SYSCALL(recvmsg)(long sockfd, sanitizer_kernel_msghdr *msg, long flags) {
155 PRE_READ(msg, sizeof(*msg));
158 POST_SYSCALL(recvmsg)(long res, long sockfd, sanitizer_kernel_msghdr *msg,
162 for (unsigned long i = 0; i < msg->msg_iovlen; ++i) {
163 POST_WRITE(msg->msg_iov[i].iov_base, msg->msg_iov[i].iov_len);
165 POST_WRITE(msg->msg_control, msg->msg_controllen);
170 PRE_SYSCALL(recvmmsg)(long fd, sanitizer_kernel_mmsghdr *msg, long vlen,
171 long flags, void *timeout) {
172 PRE_READ(msg, vlen * sizeof(*msg));
175 POST_SYSCALL(recvmmsg)(long res, long fd, sanitizer_kernel_mmsghdr *msg,
176 long vlen, long flags, void *timeout) {
179 for (unsigned long i = 0; i < msg->msg_hdr.msg_iovlen; ++i) {
180 POST_WRITE(msg->msg_hdr.msg_iov[i].iov_base,
181 msg->msg_hdr.msg_iov[i].iov_len);
183 POST_WRITE(msg->msg_hdr.msg_control, msg->msg_hdr.msg_controllen);
184 POST_WRITE(&msg->msg_len, sizeof(msg->msg_len));
186 if (timeout) POST_WRITE(timeout, struct_timespec_sz);
190 PRE_SYSCALL(read)(long fd, void *buf, uptr count) {
192 PRE_WRITE(buf, count);
196 POST_SYSCALL(read)(long res, long fd, void *buf, uptr count) {
197 if (res > 0 && buf) {
198 POST_WRITE(buf, res);
202 PRE_SYSCALL(time)(void *tloc) {}
204 POST_SYSCALL(time)(long res, void *tloc) {
206 if (tloc) POST_WRITE(tloc, sizeof(long));
210 PRE_SYSCALL(stime)(void *tptr) {}
212 POST_SYSCALL(stime)(long res, void *tptr) {
214 if (tptr) POST_WRITE(tptr, sizeof(long));
218 PRE_SYSCALL(gettimeofday)(void *tv, void *tz) {}
220 POST_SYSCALL(gettimeofday)(long res, void *tv, void *tz) {
222 if (tv) POST_WRITE(tv, timeval_sz);
223 if (tz) POST_WRITE(tz, struct_timezone_sz);
227 PRE_SYSCALL(settimeofday)(void *tv, void *tz) {}
229 POST_SYSCALL(settimeofday)(long res, void *tv, void *tz) {
231 if (tv) POST_WRITE(tv, timeval_sz);
232 if (tz) POST_WRITE(tz, struct_timezone_sz);
236 #if !SANITIZER_ANDROID
237 PRE_SYSCALL(adjtimex)(void *txc_p) {}
239 POST_SYSCALL(adjtimex)(long res, void *txc_p) {
241 if (txc_p) POST_WRITE(txc_p, struct_timex_sz);
246 PRE_SYSCALL(times)(void *tbuf) {}
248 POST_SYSCALL(times)(long res, void *tbuf) {
250 if (tbuf) POST_WRITE(tbuf, struct_tms_sz);
254 PRE_SYSCALL(gettid)() {}
256 POST_SYSCALL(gettid)(long res) {}
258 PRE_SYSCALL(nanosleep)(void *rqtp, void *rmtp) {}
260 POST_SYSCALL(nanosleep)(long res, void *rqtp, void *rmtp) {
262 if (rqtp) POST_WRITE(rqtp, struct_timespec_sz);
263 if (rmtp) POST_WRITE(rmtp, struct_timespec_sz);
267 PRE_SYSCALL(alarm)(long seconds) {}
269 POST_SYSCALL(alarm)(long res, long seconds) {}
271 PRE_SYSCALL(getpid)() {}
273 POST_SYSCALL(getpid)(long res) {}
275 PRE_SYSCALL(getppid)() {}
277 POST_SYSCALL(getppid)(long res) {}
279 PRE_SYSCALL(getuid)() {}
281 POST_SYSCALL(getuid)(long res) {}
283 PRE_SYSCALL(geteuid)() {}
285 POST_SYSCALL(geteuid)(long res) {}
287 PRE_SYSCALL(getgid)() {}
289 POST_SYSCALL(getgid)(long res) {}
291 PRE_SYSCALL(getegid)() {}
293 POST_SYSCALL(getegid)(long res) {}
295 PRE_SYSCALL(getresuid)(void *ruid, void *euid, void *suid) {}
297 POST_SYSCALL(getresuid)(long res, void *ruid, void *euid, void *suid) {
299 if (ruid) POST_WRITE(ruid, sizeof(unsigned));
300 if (euid) POST_WRITE(euid, sizeof(unsigned));
301 if (suid) POST_WRITE(suid, sizeof(unsigned));
305 PRE_SYSCALL(getresgid)(void *rgid, void *egid, void *sgid) {}
307 POST_SYSCALL(getresgid)(long res, void *rgid, void *egid, void *sgid) {
309 if (rgid) POST_WRITE(rgid, sizeof(unsigned));
310 if (egid) POST_WRITE(egid, sizeof(unsigned));
311 if (sgid) POST_WRITE(sgid, sizeof(unsigned));
315 PRE_SYSCALL(getpgid)(long pid) {}
317 POST_SYSCALL(getpgid)(long res, long pid) {}
319 PRE_SYSCALL(getpgrp)() {}
321 POST_SYSCALL(getpgrp)(long res) {}
323 PRE_SYSCALL(getsid)(long pid) {}
325 POST_SYSCALL(getsid)(long res, long pid) {}
327 PRE_SYSCALL(getgroups)(long gidsetsize, void *grouplist) {}
329 POST_SYSCALL(getgroups)(long res, long gidsetsize,
330 __sanitizer___kernel_gid_t *grouplist) {
332 if (grouplist) POST_WRITE(grouplist, res * sizeof(*grouplist));
336 PRE_SYSCALL(setregid)(long rgid, long egid) {}
338 POST_SYSCALL(setregid)(long res, long rgid, long egid) {}
340 PRE_SYSCALL(setgid)(long gid) {}
342 POST_SYSCALL(setgid)(long res, long gid) {}
344 PRE_SYSCALL(setreuid)(long ruid, long euid) {}
346 POST_SYSCALL(setreuid)(long res, long ruid, long euid) {}
348 PRE_SYSCALL(setuid)(long uid) {}
350 POST_SYSCALL(setuid)(long res, long uid) {}
352 PRE_SYSCALL(setresuid)(long ruid, long euid, long suid) {}
354 POST_SYSCALL(setresuid)(long res, long ruid, long euid, long suid) {}
356 PRE_SYSCALL(setresgid)(long rgid, long egid, long sgid) {}
358 POST_SYSCALL(setresgid)(long res, long rgid, long egid, long sgid) {}
360 PRE_SYSCALL(setfsuid)(long uid) {}
362 POST_SYSCALL(setfsuid)(long res, long uid) {}
364 PRE_SYSCALL(setfsgid)(long gid) {}
366 POST_SYSCALL(setfsgid)(long res, long gid) {}
368 PRE_SYSCALL(setpgid)(long pid, long pgid) {}
370 POST_SYSCALL(setpgid)(long res, long pid, long pgid) {}
372 PRE_SYSCALL(setsid)() {}
374 POST_SYSCALL(setsid)(long res) {}
376 PRE_SYSCALL(setgroups)(long gidsetsize, __sanitizer___kernel_gid_t *grouplist) {
377 if (grouplist) POST_WRITE(grouplist, gidsetsize * sizeof(*grouplist));
380 POST_SYSCALL(setgroups)(long res, long gidsetsize,
381 __sanitizer___kernel_gid_t *grouplist) {}
383 PRE_SYSCALL(acct)(const void *name) {
385 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
388 POST_SYSCALL(acct)(long res, const void *name) {}
390 PRE_SYSCALL(capget)(void *header, void *dataptr) {
391 if (header) PRE_READ(header, __user_cap_header_struct_sz);
394 POST_SYSCALL(capget)(long res, void *header, void *dataptr) {
396 if (dataptr) POST_WRITE(dataptr, __user_cap_data_struct_sz);
399 PRE_SYSCALL(capset)(void *header, const void *data) {
400 if (header) PRE_READ(header, __user_cap_header_struct_sz);
401 if (data) PRE_READ(data, __user_cap_data_struct_sz);
404 POST_SYSCALL(capset)(long res, void *header, const void *data) {}
406 PRE_SYSCALL(personality)(long personality) {}
408 POST_SYSCALL(personality)(long res, long personality) {}
410 PRE_SYSCALL(sigpending)(void *set) {}
412 POST_SYSCALL(sigpending)(long res, void *set) {
414 if (set) POST_WRITE(set, old_sigset_t_sz);
418 PRE_SYSCALL(sigprocmask)(long how, void *set, void *oset) {}
420 POST_SYSCALL(sigprocmask)(long res, long how, void *set, void *oset) {
422 if (set) POST_WRITE(set, old_sigset_t_sz);
423 if (oset) POST_WRITE(oset, old_sigset_t_sz);
427 PRE_SYSCALL(getitimer)(long which, void *value) {}
429 POST_SYSCALL(getitimer)(long res, long which, void *value) {
431 if (value) POST_WRITE(value, struct_itimerval_sz);
435 PRE_SYSCALL(setitimer)(long which, void *value, void *ovalue) {}
437 POST_SYSCALL(setitimer)(long res, long which, void *value, void *ovalue) {
439 if (value) POST_WRITE(value, struct_itimerval_sz);
440 if (ovalue) POST_WRITE(ovalue, struct_itimerval_sz);
444 PRE_SYSCALL(timer_create)(long which_clock, void *timer_event_spec,
445 void *created_timer_id) {}
447 POST_SYSCALL(timer_create)(long res, long which_clock, void *timer_event_spec,
448 void *created_timer_id) {
450 if (timer_event_spec) POST_WRITE(timer_event_spec, struct_sigevent_sz);
451 if (created_timer_id) POST_WRITE(created_timer_id, sizeof(long));
455 PRE_SYSCALL(timer_gettime)(long timer_id, void *setting) {}
457 POST_SYSCALL(timer_gettime)(long res, long timer_id, void *setting) {
459 if (setting) POST_WRITE(setting, struct_itimerspec_sz);
463 PRE_SYSCALL(timer_getoverrun)(long timer_id) {}
465 POST_SYSCALL(timer_getoverrun)(long res, long timer_id) {}
467 PRE_SYSCALL(timer_settime)(long timer_id, long flags, const void *new_setting,
469 if (new_setting) PRE_READ(new_setting, struct_itimerspec_sz);
472 POST_SYSCALL(timer_settime)(long res, long timer_id, long flags,
473 const void *new_setting, void *old_setting) {
475 if (old_setting) POST_WRITE(old_setting, struct_itimerspec_sz);
479 PRE_SYSCALL(timer_delete)(long timer_id) {}
481 POST_SYSCALL(timer_delete)(long res, long timer_id) {}
483 PRE_SYSCALL(clock_settime)(long which_clock, const void *tp) {
484 if (tp) PRE_READ(tp, struct_timespec_sz);
487 POST_SYSCALL(clock_settime)(long res, long which_clock, const void *tp) {}
489 PRE_SYSCALL(clock_gettime)(long which_clock, void *tp) {}
491 POST_SYSCALL(clock_gettime)(long res, long which_clock, void *tp) {
493 if (tp) POST_WRITE(tp, struct_timespec_sz);
497 #if !SANITIZER_ANDROID
498 PRE_SYSCALL(clock_adjtime)(long which_clock, void *tx) {}
500 POST_SYSCALL(clock_adjtime)(long res, long which_clock, void *tx) {
502 if (tx) POST_WRITE(tx, struct_timex_sz);
507 PRE_SYSCALL(clock_getres)(long which_clock, void *tp) {}
509 POST_SYSCALL(clock_getres)(long res, long which_clock, void *tp) {
511 if (tp) POST_WRITE(tp, struct_timespec_sz);
515 PRE_SYSCALL(clock_nanosleep)(long which_clock, long flags, const void *rqtp,
517 if (rqtp) PRE_READ(rqtp, struct_timespec_sz);
520 POST_SYSCALL(clock_nanosleep)(long res, long which_clock, long flags,
521 const void *rqtp, void *rmtp) {
523 if (rmtp) POST_WRITE(rmtp, struct_timespec_sz);
527 PRE_SYSCALL(nice)(long increment) {}
529 POST_SYSCALL(nice)(long res, long increment) {}
531 PRE_SYSCALL(sched_setscheduler)(long pid, long policy, void *param) {}
533 POST_SYSCALL(sched_setscheduler)(long res, long pid, long policy, void *param) {
535 if (param) POST_WRITE(param, struct_sched_param_sz);
539 PRE_SYSCALL(sched_setparam)(long pid, void *param) {
540 if (param) PRE_READ(param, struct_sched_param_sz);
543 POST_SYSCALL(sched_setparam)(long res, long pid, void *param) {}
545 PRE_SYSCALL(sched_getscheduler)(long pid) {}
547 POST_SYSCALL(sched_getscheduler)(long res, long pid) {}
549 PRE_SYSCALL(sched_getparam)(long pid, void *param) {}
551 POST_SYSCALL(sched_getparam)(long res, long pid, void *param) {
553 if (param) POST_WRITE(param, struct_sched_param_sz);
557 PRE_SYSCALL(sched_setaffinity)(long pid, long len, void *user_mask_ptr) {
558 if (user_mask_ptr) PRE_READ(user_mask_ptr, len);
561 POST_SYSCALL(sched_setaffinity)(long res, long pid, long len,
562 void *user_mask_ptr) {}
564 PRE_SYSCALL(sched_getaffinity)(long pid, long len, void *user_mask_ptr) {}
566 POST_SYSCALL(sched_getaffinity)(long res, long pid, long len,
567 void *user_mask_ptr) {
569 if (user_mask_ptr) POST_WRITE(user_mask_ptr, len);
573 PRE_SYSCALL(sched_yield)() {}
575 POST_SYSCALL(sched_yield)(long res) {}
577 PRE_SYSCALL(sched_get_priority_max)(long policy) {}
579 POST_SYSCALL(sched_get_priority_max)(long res, long policy) {}
581 PRE_SYSCALL(sched_get_priority_min)(long policy) {}
583 POST_SYSCALL(sched_get_priority_min)(long res, long policy) {}
585 PRE_SYSCALL(sched_rr_get_interval)(long pid, void *interval) {}
587 POST_SYSCALL(sched_rr_get_interval)(long res, long pid, void *interval) {
589 if (interval) POST_WRITE(interval, struct_timespec_sz);
593 PRE_SYSCALL(setpriority)(long which, long who, long niceval) {}
595 POST_SYSCALL(setpriority)(long res, long which, long who, long niceval) {}
597 PRE_SYSCALL(getpriority)(long which, long who) {}
599 POST_SYSCALL(getpriority)(long res, long which, long who) {}
601 PRE_SYSCALL(shutdown)(long arg0, long arg1) {}
603 POST_SYSCALL(shutdown)(long res, long arg0, long arg1) {}
605 PRE_SYSCALL(reboot)(long magic1, long magic2, long cmd, void *arg) {}
607 POST_SYSCALL(reboot)(long res, long magic1, long magic2, long cmd, void *arg) {}
609 PRE_SYSCALL(restart_syscall)() {}
611 POST_SYSCALL(restart_syscall)(long res) {}
613 PRE_SYSCALL(kexec_load)(long entry, long nr_segments, void *segments,
616 POST_SYSCALL(kexec_load)(long res, long entry, long nr_segments, void *segments,
619 if (segments) POST_WRITE(segments, struct_kexec_segment_sz);
623 PRE_SYSCALL(exit)(long error_code) {}
625 POST_SYSCALL(exit)(long res, long error_code) {}
627 PRE_SYSCALL(exit_group)(long error_code) {}
629 POST_SYSCALL(exit_group)(long res, long error_code) {}
631 PRE_SYSCALL(wait4)(long pid, void *stat_addr, long options, void *ru) {}
633 POST_SYSCALL(wait4)(long res, long pid, void *stat_addr, long options,
636 if (stat_addr) POST_WRITE(stat_addr, sizeof(int));
637 if (ru) POST_WRITE(ru, struct_rusage_sz);
641 PRE_SYSCALL(waitid)(long which, long pid, void *infop, long options, void *ru) {
644 POST_SYSCALL(waitid)(long res, long which, long pid, void *infop, long options,
647 if (infop) POST_WRITE(infop, siginfo_t_sz);
648 if (ru) POST_WRITE(ru, struct_rusage_sz);
652 PRE_SYSCALL(waitpid)(long pid, void *stat_addr, long options) {}
654 POST_SYSCALL(waitpid)(long res, long pid, void *stat_addr, long options) {
656 if (stat_addr) POST_WRITE(stat_addr, sizeof(int));
660 PRE_SYSCALL(set_tid_address)(void *tidptr) {}
662 POST_SYSCALL(set_tid_address)(long res, void *tidptr) {
664 if (tidptr) POST_WRITE(tidptr, sizeof(int));
668 PRE_SYSCALL(init_module)(void *umod, long len, const void *uargs) {
670 PRE_READ(uargs, __sanitizer::internal_strlen((const char *)uargs) + 1);
673 POST_SYSCALL(init_module)(long res, void *umod, long len, const void *uargs) {}
675 PRE_SYSCALL(delete_module)(const void *name_user, long flags) {
678 __sanitizer::internal_strlen((const char *)name_user) + 1);
681 POST_SYSCALL(delete_module)(long res, const void *name_user, long flags) {}
683 PRE_SYSCALL(rt_sigprocmask)(long how, void *set, void *oset, long sigsetsize) {}
685 POST_SYSCALL(rt_sigprocmask)(long res, long how, kernel_sigset_t *set,
686 kernel_sigset_t *oset, long sigsetsize) {
688 if (set) POST_WRITE(set, sigsetsize);
689 if (oset) POST_WRITE(oset, sigsetsize);
693 PRE_SYSCALL(rt_sigpending)(void *set, long sigsetsize) {}
695 POST_SYSCALL(rt_sigpending)(long res, kernel_sigset_t *set, long sigsetsize) {
697 if (set) POST_WRITE(set, sigsetsize);
701 PRE_SYSCALL(rt_sigtimedwait)(const kernel_sigset_t *uthese, void *uinfo,
702 const void *uts, long sigsetsize) {
703 if (uthese) PRE_READ(uthese, sigsetsize);
704 if (uts) PRE_READ(uts, struct_timespec_sz);
707 POST_SYSCALL(rt_sigtimedwait)(long res, const void *uthese, void *uinfo,
708 const void *uts, long sigsetsize) {
710 if (uinfo) POST_WRITE(uinfo, siginfo_t_sz);
714 PRE_SYSCALL(rt_tgsigqueueinfo)(long tgid, long pid, long sig, void *uinfo) {}
716 POST_SYSCALL(rt_tgsigqueueinfo)(long res, long tgid, long pid, long sig,
719 if (uinfo) POST_WRITE(uinfo, siginfo_t_sz);
723 PRE_SYSCALL(kill)(long pid, long sig) {}
725 POST_SYSCALL(kill)(long res, long pid, long sig) {}
727 PRE_SYSCALL(tgkill)(long tgid, long pid, long sig) {}
729 POST_SYSCALL(tgkill)(long res, long tgid, long pid, long sig) {}
731 PRE_SYSCALL(tkill)(long pid, long sig) {}
733 POST_SYSCALL(tkill)(long res, long pid, long sig) {}
735 PRE_SYSCALL(rt_sigqueueinfo)(long pid, long sig, void *uinfo) {}
737 POST_SYSCALL(rt_sigqueueinfo)(long res, long pid, long sig, void *uinfo) {
739 if (uinfo) POST_WRITE(uinfo, siginfo_t_sz);
743 PRE_SYSCALL(sgetmask)() {}
745 POST_SYSCALL(sgetmask)(long res) {}
747 PRE_SYSCALL(ssetmask)(long newmask) {}
749 POST_SYSCALL(ssetmask)(long res, long newmask) {}
751 PRE_SYSCALL(signal)(long sig, long handler) {}
753 POST_SYSCALL(signal)(long res, long sig, long handler) {}
755 PRE_SYSCALL(pause)() {}
757 POST_SYSCALL(pause)(long res) {}
759 PRE_SYSCALL(sync)() {}
761 POST_SYSCALL(sync)(long res) {}
763 PRE_SYSCALL(fsync)(long fd) {}
765 POST_SYSCALL(fsync)(long res, long fd) {}
767 PRE_SYSCALL(fdatasync)(long fd) {}
769 POST_SYSCALL(fdatasync)(long res, long fd) {}
771 PRE_SYSCALL(bdflush)(long func, long data) {}
773 POST_SYSCALL(bdflush)(long res, long func, long data) {}
775 PRE_SYSCALL(mount)(void *dev_name, void *dir_name, void *type, long flags,
778 POST_SYSCALL(mount)(long res, void *dev_name, void *dir_name, void *type,
779 long flags, void *data) {
783 __sanitizer::internal_strlen((const char *)dev_name) + 1);
786 __sanitizer::internal_strlen((const char *)dir_name) + 1);
788 POST_WRITE(type, __sanitizer::internal_strlen((const char *)type) + 1);
792 PRE_SYSCALL(umount)(void *name, long flags) {}
794 POST_SYSCALL(umount)(long res, void *name, long flags) {
797 POST_WRITE(name, __sanitizer::internal_strlen((const char *)name) + 1);
801 PRE_SYSCALL(oldumount)(void *name) {}
803 POST_SYSCALL(oldumount)(long res, void *name) {
806 POST_WRITE(name, __sanitizer::internal_strlen((const char *)name) + 1);
810 PRE_SYSCALL(truncate)(const void *path, long length) {
812 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
815 POST_SYSCALL(truncate)(long res, const void *path, long length) {}
817 PRE_SYSCALL(ftruncate)(long fd, long length) {}
819 POST_SYSCALL(ftruncate)(long res, long fd, long length) {}
821 PRE_SYSCALL(stat)(const void *filename, void *statbuf) {
824 __sanitizer::internal_strlen((const char *)filename) + 1);
827 POST_SYSCALL(stat)(long res, const void *filename, void *statbuf) {
829 if (statbuf) POST_WRITE(statbuf, struct___old_kernel_stat_sz);
833 #if !SANITIZER_ANDROID
834 PRE_SYSCALL(statfs)(const void *path, void *buf) {
836 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
839 POST_SYSCALL(statfs)(long res, const void *path, void *buf) {
841 if (buf) POST_WRITE(buf, struct_statfs_sz);
845 PRE_SYSCALL(statfs64)(const void *path, long sz, void *buf) {
847 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
850 POST_SYSCALL(statfs64)(long res, const void *path, long sz, void *buf) {
852 if (buf) POST_WRITE(buf, struct_statfs64_sz);
856 PRE_SYSCALL(fstatfs)(long fd, void *buf) {}
858 POST_SYSCALL(fstatfs)(long res, long fd, void *buf) {
860 if (buf) POST_WRITE(buf, struct_statfs_sz);
864 PRE_SYSCALL(fstatfs64)(long fd, long sz, void *buf) {}
866 POST_SYSCALL(fstatfs64)(long res, long fd, long sz, void *buf) {
868 if (buf) POST_WRITE(buf, struct_statfs64_sz);
871 #endif // !SANITIZER_ANDROID
873 PRE_SYSCALL(lstat)(const void *filename, void *statbuf) {
876 __sanitizer::internal_strlen((const char *)filename) + 1);
879 POST_SYSCALL(lstat)(long res, const void *filename, void *statbuf) {
881 if (statbuf) POST_WRITE(statbuf, struct___old_kernel_stat_sz);
885 PRE_SYSCALL(fstat)(long fd, void *statbuf) {}
887 POST_SYSCALL(fstat)(long res, long fd, void *statbuf) {
889 if (statbuf) POST_WRITE(statbuf, struct___old_kernel_stat_sz);
893 PRE_SYSCALL(newstat)(const void *filename, void *statbuf) {
896 __sanitizer::internal_strlen((const char *)filename) + 1);
899 POST_SYSCALL(newstat)(long res, const void *filename, void *statbuf) {
901 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat_sz);
905 PRE_SYSCALL(newlstat)(const void *filename, void *statbuf) {
908 __sanitizer::internal_strlen((const char *)filename) + 1);
911 POST_SYSCALL(newlstat)(long res, const void *filename, void *statbuf) {
913 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat_sz);
917 PRE_SYSCALL(newfstat)(long fd, void *statbuf) {}
919 POST_SYSCALL(newfstat)(long res, long fd, void *statbuf) {
921 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat_sz);
925 #if !SANITIZER_ANDROID
926 PRE_SYSCALL(ustat)(long dev, void *ubuf) {}
928 POST_SYSCALL(ustat)(long res, long dev, void *ubuf) {
930 if (ubuf) POST_WRITE(ubuf, struct_ustat_sz);
933 #endif // !SANITIZER_ANDROID
935 PRE_SYSCALL(stat64)(const void *filename, void *statbuf) {
938 __sanitizer::internal_strlen((const char *)filename) + 1);
941 POST_SYSCALL(stat64)(long res, const void *filename, void *statbuf) {
943 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat64_sz);
947 PRE_SYSCALL(fstat64)(long fd, void *statbuf) {}
949 POST_SYSCALL(fstat64)(long res, long fd, void *statbuf) {
951 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat64_sz);
955 PRE_SYSCALL(lstat64)(const void *filename, void *statbuf) {
958 __sanitizer::internal_strlen((const char *)filename) + 1);
961 POST_SYSCALL(lstat64)(long res, const void *filename, void *statbuf) {
963 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat64_sz);
967 PRE_SYSCALL(setxattr)(const void *path, const void *name, const void *value,
968 long size, long flags) {
970 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
972 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
973 if (value) PRE_READ(value, size);
976 POST_SYSCALL(setxattr)(long res, const void *path, const void *name,
977 const void *value, long size, long flags) {}
979 PRE_SYSCALL(lsetxattr)(const void *path, const void *name, const void *value,
980 long size, long flags) {
982 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
984 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
985 if (value) PRE_READ(value, size);
988 POST_SYSCALL(lsetxattr)(long res, const void *path, const void *name,
989 const void *value, long size, long flags) {}
991 PRE_SYSCALL(fsetxattr)(long fd, const void *name, const void *value, long size,
994 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
995 if (value) PRE_READ(value, size);
998 POST_SYSCALL(fsetxattr)(long res, long fd, const void *name, const void *value,
999 long size, long flags) {}
1001 PRE_SYSCALL(getxattr)(const void *path, const void *name, void *value,
1004 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1006 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
1009 POST_SYSCALL(getxattr)(long res, const void *path, const void *name,
1010 void *value, long size) {
1011 if (size && res > 0) {
1012 if (value) POST_WRITE(value, res);
1016 PRE_SYSCALL(lgetxattr)(const void *path, const void *name, void *value,
1019 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1021 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
1024 POST_SYSCALL(lgetxattr)(long res, const void *path, const void *name,
1025 void *value, long size) {
1026 if (size && res > 0) {
1027 if (value) POST_WRITE(value, res);
1031 PRE_SYSCALL(fgetxattr)(long fd, const void *name, void *value, long size) {
1033 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
1036 POST_SYSCALL(fgetxattr)(long res, long fd, const void *name, void *value,
1038 if (size && res > 0) {
1039 if (value) POST_WRITE(value, res);
1043 PRE_SYSCALL(listxattr)(const void *path, void *list, long size) {
1045 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1048 POST_SYSCALL(listxattr)(long res, const void *path, void *list, long size) {
1049 if (size && res > 0) {
1050 if (list) POST_WRITE(list, res);
1054 PRE_SYSCALL(llistxattr)(const void *path, void *list, long size) {
1056 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1059 POST_SYSCALL(llistxattr)(long res, const void *path, void *list, long size) {
1060 if (size && res > 0) {
1061 if (list) POST_WRITE(list, res);
1065 PRE_SYSCALL(flistxattr)(long fd, void *list, long size) {}
1067 POST_SYSCALL(flistxattr)(long res, long fd, void *list, long size) {
1068 if (size && res > 0) {
1069 if (list) POST_WRITE(list, res);
1073 PRE_SYSCALL(removexattr)(const void *path, const void *name) {
1075 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1077 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
1080 POST_SYSCALL(removexattr)(long res, const void *path, const void *name) {}
1082 PRE_SYSCALL(lremovexattr)(const void *path, const void *name) {
1084 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1086 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
1089 POST_SYSCALL(lremovexattr)(long res, const void *path, const void *name) {}
1091 PRE_SYSCALL(fremovexattr)(long fd, const void *name) {
1093 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
1096 POST_SYSCALL(fremovexattr)(long res, long fd, const void *name) {}
1098 PRE_SYSCALL(brk)(long brk) {}
1100 POST_SYSCALL(brk)(long res, long brk) {}
1102 PRE_SYSCALL(mprotect)(long start, long len, long prot) {}
1104 POST_SYSCALL(mprotect)(long res, long start, long len, long prot) {}
1106 PRE_SYSCALL(mremap)(long addr, long old_len, long new_len, long flags,
1109 POST_SYSCALL(mremap)(long res, long addr, long old_len, long new_len,
1110 long flags, long new_addr) {}
1112 PRE_SYSCALL(remap_file_pages)(long start, long size, long prot, long pgoff,
1115 POST_SYSCALL(remap_file_pages)(long res, long start, long size, long prot,
1116 long pgoff, long flags) {}
1118 PRE_SYSCALL(msync)(long start, long len, long flags) {}
1120 POST_SYSCALL(msync)(long res, long start, long len, long flags) {}
1122 PRE_SYSCALL(munmap)(long addr, long len) {}
1124 POST_SYSCALL(munmap)(long res, long addr, long len) {}
1126 PRE_SYSCALL(mlock)(long start, long len) {}
1128 POST_SYSCALL(mlock)(long res, long start, long len) {}
1130 PRE_SYSCALL(munlock)(long start, long len) {}
1132 POST_SYSCALL(munlock)(long res, long start, long len) {}
1134 PRE_SYSCALL(mlockall)(long flags) {}
1136 POST_SYSCALL(mlockall)(long res, long flags) {}
1138 PRE_SYSCALL(munlockall)() {}
1140 POST_SYSCALL(munlockall)(long res) {}
1142 PRE_SYSCALL(madvise)(long start, long len, long behavior) {}
1144 POST_SYSCALL(madvise)(long res, long start, long len, long behavior) {}
1146 PRE_SYSCALL(mincore)(long start, long len, void *vec) {}
1148 POST_SYSCALL(mincore)(long res, long start, long len, void *vec) {
1151 POST_WRITE(vec, (len + GetPageSizeCached() - 1) / GetPageSizeCached());
1156 PRE_SYSCALL(pivot_root)(const void *new_root, const void *put_old) {
1159 __sanitizer::internal_strlen((const char *)new_root) + 1);
1161 PRE_READ(put_old, __sanitizer::internal_strlen((const char *)put_old) + 1);
1164 POST_SYSCALL(pivot_root)(long res, const void *new_root, const void *put_old) {}
1166 PRE_SYSCALL(chroot)(const void *filename) {
1169 __sanitizer::internal_strlen((const char *)filename) + 1);
1172 POST_SYSCALL(chroot)(long res, const void *filename) {}
1174 PRE_SYSCALL(mknod)(const void *filename, long mode, long dev) {
1177 __sanitizer::internal_strlen((const char *)filename) + 1);
1180 POST_SYSCALL(mknod)(long res, const void *filename, long mode, long dev) {}
1182 PRE_SYSCALL(link)(const void *oldname, const void *newname) {
1184 PRE_READ(oldname, __sanitizer::internal_strlen((const char *)oldname) + 1);
1186 PRE_READ(newname, __sanitizer::internal_strlen((const char *)newname) + 1);
1189 POST_SYSCALL(link)(long res, const void *oldname, const void *newname) {}
1191 PRE_SYSCALL(symlink)(const void *old, const void *new_) {
1192 if (old) PRE_READ(old, __sanitizer::internal_strlen((const char *)old) + 1);
1194 PRE_READ(new_, __sanitizer::internal_strlen((const char *)new_) + 1);
1197 POST_SYSCALL(symlink)(long res, const void *old, const void *new_) {}
1199 PRE_SYSCALL(unlink)(const void *pathname) {
1202 __sanitizer::internal_strlen((const char *)pathname) + 1);
1205 POST_SYSCALL(unlink)(long res, const void *pathname) {}
1207 PRE_SYSCALL(rename)(const void *oldname, const void *newname) {
1209 PRE_READ(oldname, __sanitizer::internal_strlen((const char *)oldname) + 1);
1211 PRE_READ(newname, __sanitizer::internal_strlen((const char *)newname) + 1);
1214 POST_SYSCALL(rename)(long res, const void *oldname, const void *newname) {}
1216 PRE_SYSCALL(chmod)(const void *filename, long mode) {
1219 __sanitizer::internal_strlen((const char *)filename) + 1);
1222 POST_SYSCALL(chmod)(long res, const void *filename, long mode) {}
1224 PRE_SYSCALL(fchmod)(long fd, long mode) {}
1226 POST_SYSCALL(fchmod)(long res, long fd, long mode) {}
1228 PRE_SYSCALL(fcntl)(long fd, long cmd, long arg) {}
1230 POST_SYSCALL(fcntl)(long res, long fd, long cmd, long arg) {}
1232 PRE_SYSCALL(fcntl64)(long fd, long cmd, long arg) {}
1234 POST_SYSCALL(fcntl64)(long res, long fd, long cmd, long arg) {}
1236 PRE_SYSCALL(pipe)(void *fildes) {}
1238 POST_SYSCALL(pipe)(long res, void *fildes) {
1240 if (fildes) POST_WRITE(fildes, sizeof(int) * 2);
1243 PRE_SYSCALL(pipe2)(void *fildes, long flags) {}
1245 POST_SYSCALL(pipe2)(long res, void *fildes, long flags) {
1247 if (fildes) POST_WRITE(fildes, sizeof(int) * 2);
1250 PRE_SYSCALL(dup)(long fildes) {}
1252 POST_SYSCALL(dup)(long res, long fildes) {}
1254 PRE_SYSCALL(dup2)(long oldfd, long newfd) {}
1256 POST_SYSCALL(dup2)(long res, long oldfd, long newfd) {}
1258 PRE_SYSCALL(dup3)(long oldfd, long newfd, long flags) {}
1260 POST_SYSCALL(dup3)(long res, long oldfd, long newfd, long flags) {}
1262 PRE_SYSCALL(ioperm)(long from, long num, long on) {}
1264 POST_SYSCALL(ioperm)(long res, long from, long num, long on) {}
1266 PRE_SYSCALL(ioctl)(long fd, long cmd, long arg) {}
1268 POST_SYSCALL(ioctl)(long res, long fd, long cmd, long arg) {}
1270 PRE_SYSCALL(flock)(long fd, long cmd) {}
1272 POST_SYSCALL(flock)(long res, long fd, long cmd) {}
1274 PRE_SYSCALL(io_setup)(long nr_reqs, void **ctx) {
1275 if (ctx) PRE_WRITE(ctx, sizeof(*ctx));
1278 POST_SYSCALL(io_setup)(long res, long nr_reqs, void **ctx) {
1280 if (ctx) POST_WRITE(ctx, sizeof(*ctx));
1281 // (*ctx) is actually a pointer to a kernel mapped page, and there are
1282 // people out there who are crazy enough to peek into that page's 32-byte
1284 if (*ctx) POST_WRITE(*ctx, 32);
1288 PRE_SYSCALL(io_destroy)(long ctx) {}
1290 POST_SYSCALL(io_destroy)(long res, long ctx) {}
1292 PRE_SYSCALL(io_getevents)(long ctx_id, long min_nr, long nr,
1293 __sanitizer_io_event *ioevpp, void *timeout) {
1294 if (timeout) PRE_READ(timeout, struct_timespec_sz);
1297 POST_SYSCALL(io_getevents)(long res, long ctx_id, long min_nr, long nr,
1298 __sanitizer_io_event *ioevpp, void *timeout) {
1300 if (ioevpp) POST_WRITE(ioevpp, res * sizeof(*ioevpp));
1301 if (timeout) POST_WRITE(timeout, struct_timespec_sz);
1303 for (long i = 0; i < res; i++) {
1304 // We synchronize io_submit -> io_getevents/io_cancel using the
1305 // user-provided data context. Data is not necessary a pointer, it can be
1306 // an int, 0 or whatever; acquire/release will correctly handle this.
1307 // This scheme can lead to false negatives, e.g. when all operations
1308 // synchronize on 0. But there does not seem to be a better solution
1309 // (except wrapping all operations in own context, which is unreliable).
1310 // We can not reliably extract fildes in io_getevents.
1311 COMMON_SYSCALL_ACQUIRE((void*)ioevpp[i].data);
1315 PRE_SYSCALL(io_submit)(long ctx_id, long nr, __sanitizer_iocb **iocbpp) {
1316 for (long i = 0; i < nr; ++i) {
1317 uptr op = iocbpp[i]->aio_lio_opcode;
1318 void *data = (void*)iocbpp[i]->aio_data;
1319 void *buf = (void*)iocbpp[i]->aio_buf;
1320 uptr len = (uptr)iocbpp[i]->aio_nbytes;
1321 if (op == iocb_cmd_pwrite && buf && len) {
1323 } else if (op == iocb_cmd_pread && buf && len) {
1324 POST_WRITE(buf, len);
1325 } else if (op == iocb_cmd_pwritev) {
1326 __sanitizer_iovec *iovec = (__sanitizer_iovec*)buf;
1327 for (uptr v = 0; v < len; v++)
1328 PRE_READ(iovec[v].iov_base, iovec[v].iov_len);
1329 } else if (op == iocb_cmd_preadv) {
1330 __sanitizer_iovec *iovec = (__sanitizer_iovec*)buf;
1331 for (uptr v = 0; v < len; v++)
1332 POST_WRITE(iovec[v].iov_base, iovec[v].iov_len);
1334 // See comment in io_getevents.
1335 COMMON_SYSCALL_RELEASE(data);
1339 POST_SYSCALL(io_submit)(long res, long ctx_id, long nr,
1340 __sanitizer_iocb **iocbpp) {}
1342 PRE_SYSCALL(io_cancel)(long ctx_id, __sanitizer_iocb *iocb,
1343 __sanitizer_io_event *result) {
1346 POST_SYSCALL(io_cancel)(long res, long ctx_id, __sanitizer_iocb *iocb,
1347 __sanitizer_io_event *result) {
1350 // See comment in io_getevents.
1351 COMMON_SYSCALL_ACQUIRE((void*)result->data);
1352 POST_WRITE(result, sizeof(*result));
1355 POST_WRITE(iocb, sizeof(*iocb));
1359 PRE_SYSCALL(sendfile)(long out_fd, long in_fd, void *offset, long count) {}
1361 POST_SYSCALL(sendfile)(long res, long out_fd, long in_fd,
1362 __sanitizer___kernel_off_t *offset, long count) {
1364 if (offset) POST_WRITE(offset, sizeof(*offset));
1368 PRE_SYSCALL(sendfile64)(long out_fd, long in_fd, void *offset, long count) {}
1370 POST_SYSCALL(sendfile64)(long res, long out_fd, long in_fd,
1371 __sanitizer___kernel_loff_t *offset, long count) {
1373 if (offset) POST_WRITE(offset, sizeof(*offset));
1377 PRE_SYSCALL(readlink)(const void *path, void *buf, long bufsiz) {
1379 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
1382 POST_SYSCALL(readlink)(long res, const void *path, void *buf, long bufsiz) {
1385 POST_WRITE(buf, __sanitizer::internal_strlen((const char *)buf) + 1);
1389 PRE_SYSCALL(creat)(const void *pathname, long mode) {
1392 __sanitizer::internal_strlen((const char *)pathname) + 1);
1395 POST_SYSCALL(creat)(long res, const void *pathname, long mode) {}
1397 PRE_SYSCALL(open)(const void *filename, long flags, long mode) {
1400 __sanitizer::internal_strlen((const char *)filename) + 1);
1403 POST_SYSCALL(open)(long res, const void *filename, long flags, long mode) {}
1405 PRE_SYSCALL(close)(long fd) {
1406 COMMON_SYSCALL_FD_CLOSE((int)fd);
1409 POST_SYSCALL(close)(long res, long fd) {}
1411 PRE_SYSCALL(access)(const void *filename, long mode) {
1414 __sanitizer::internal_strlen((const char *)filename) + 1);
1417 POST_SYSCALL(access)(long res, const void *filename, long mode) {}
1419 PRE_SYSCALL(vhangup)() {}
1421 POST_SYSCALL(vhangup)(long res) {}
1423 PRE_SYSCALL(chown)(const void *filename, long user, long group) {
1426 __sanitizer::internal_strlen((const char *)filename) + 1);
1429 POST_SYSCALL(chown)(long res, const void *filename, long user, long group) {}
1431 PRE_SYSCALL(lchown)(const void *filename, long user, long group) {
1434 __sanitizer::internal_strlen((const char *)filename) + 1);
1437 POST_SYSCALL(lchown)(long res, const void *filename, long user, long group) {}
1439 PRE_SYSCALL(fchown)(long fd, long user, long group) {}
1441 POST_SYSCALL(fchown)(long res, long fd, long user, long group) {}
1443 #if SANITIZER_USES_UID16_SYSCALLS
1444 PRE_SYSCALL(chown16)(const void *filename, long user, long group) {
1447 __sanitizer::internal_strlen((const char *)filename) + 1);
1450 POST_SYSCALL(chown16)(long res, const void *filename, long user, long group) {}
1452 PRE_SYSCALL(lchown16)(const void *filename, long user, long group) {
1455 __sanitizer::internal_strlen((const char *)filename) + 1);
1458 POST_SYSCALL(lchown16)(long res, const void *filename, long user, long group) {}
1460 PRE_SYSCALL(fchown16)(long fd, long user, long group) {}
1462 POST_SYSCALL(fchown16)(long res, long fd, long user, long group) {}
1464 PRE_SYSCALL(setregid16)(long rgid, long egid) {}
1466 POST_SYSCALL(setregid16)(long res, long rgid, long egid) {}
1468 PRE_SYSCALL(setgid16)(long gid) {}
1470 POST_SYSCALL(setgid16)(long res, long gid) {}
1472 PRE_SYSCALL(setreuid16)(long ruid, long euid) {}
1474 POST_SYSCALL(setreuid16)(long res, long ruid, long euid) {}
1476 PRE_SYSCALL(setuid16)(long uid) {}
1478 POST_SYSCALL(setuid16)(long res, long uid) {}
1480 PRE_SYSCALL(setresuid16)(long ruid, long euid, long suid) {}
1482 POST_SYSCALL(setresuid16)(long res, long ruid, long euid, long suid) {}
1484 PRE_SYSCALL(getresuid16)(void *ruid, void *euid, void *suid) {}
1486 POST_SYSCALL(getresuid16)(long res, __sanitizer___kernel_old_uid_t *ruid,
1487 __sanitizer___kernel_old_uid_t *euid,
1488 __sanitizer___kernel_old_uid_t *suid) {
1490 if (ruid) POST_WRITE(ruid, sizeof(*ruid));
1491 if (euid) POST_WRITE(euid, sizeof(*euid));
1492 if (suid) POST_WRITE(suid, sizeof(*suid));
1496 PRE_SYSCALL(setresgid16)(long rgid, long egid, long sgid) {}
1498 POST_SYSCALL(setresgid16)(long res, long rgid, long egid, long sgid) {}
1500 PRE_SYSCALL(getresgid16)(void *rgid, void *egid, void *sgid) {}
1502 POST_SYSCALL(getresgid16)(long res, __sanitizer___kernel_old_gid_t *rgid,
1503 __sanitizer___kernel_old_gid_t *egid,
1504 __sanitizer___kernel_old_gid_t *sgid) {
1506 if (rgid) POST_WRITE(rgid, sizeof(*rgid));
1507 if (egid) POST_WRITE(egid, sizeof(*egid));
1508 if (sgid) POST_WRITE(sgid, sizeof(*sgid));
1512 PRE_SYSCALL(setfsuid16)(long uid) {}
1514 POST_SYSCALL(setfsuid16)(long res, long uid) {}
1516 PRE_SYSCALL(setfsgid16)(long gid) {}
1518 POST_SYSCALL(setfsgid16)(long res, long gid) {}
1520 PRE_SYSCALL(getgroups16)(long gidsetsize,
1521 __sanitizer___kernel_old_gid_t *grouplist) {}
1523 POST_SYSCALL(getgroups16)(long res, long gidsetsize,
1524 __sanitizer___kernel_old_gid_t *grouplist) {
1526 if (grouplist) POST_WRITE(grouplist, res * sizeof(*grouplist));
1530 PRE_SYSCALL(setgroups16)(long gidsetsize,
1531 __sanitizer___kernel_old_gid_t *grouplist) {
1532 if (grouplist) POST_WRITE(grouplist, gidsetsize * sizeof(*grouplist));
1535 POST_SYSCALL(setgroups16)(long res, long gidsetsize,
1536 __sanitizer___kernel_old_gid_t *grouplist) {}
1538 PRE_SYSCALL(getuid16)() {}
1540 POST_SYSCALL(getuid16)(long res) {}
1542 PRE_SYSCALL(geteuid16)() {}
1544 POST_SYSCALL(geteuid16)(long res) {}
1546 PRE_SYSCALL(getgid16)() {}
1548 POST_SYSCALL(getgid16)(long res) {}
1550 PRE_SYSCALL(getegid16)() {}
1552 POST_SYSCALL(getegid16)(long res) {}
1553 #endif // SANITIZER_USES_UID16_SYSCALLS
1555 PRE_SYSCALL(utime)(void *filename, void *times) {}
1557 POST_SYSCALL(utime)(long res, void *filename, void *times) {
1560 POST_WRITE(filename,
1561 __sanitizer::internal_strlen((const char *)filename) + 1);
1562 if (times) POST_WRITE(times, struct_utimbuf_sz);
1566 PRE_SYSCALL(utimes)(void *filename, void *utimes) {}
1568 POST_SYSCALL(utimes)(long res, void *filename, void *utimes) {
1571 POST_WRITE(filename,
1572 __sanitizer::internal_strlen((const char *)filename) + 1);
1573 if (utimes) POST_WRITE(utimes, timeval_sz);
1577 PRE_SYSCALL(lseek)(long fd, long offset, long origin) {}
1579 POST_SYSCALL(lseek)(long res, long fd, long offset, long origin) {}
1581 PRE_SYSCALL(llseek)(long fd, long offset_high, long offset_low, void *result,
1584 POST_SYSCALL(llseek)(long res, long fd, long offset_high, long offset_low,
1585 void *result, long origin) {
1587 if (result) POST_WRITE(result, sizeof(long long));
1591 PRE_SYSCALL(readv)(long fd, const __sanitizer_iovec *vec, long vlen) {}
1593 POST_SYSCALL(readv)(long res, long fd, const __sanitizer_iovec *vec,
1596 if (vec) kernel_write_iovec(vec, vlen, res);
1600 PRE_SYSCALL(write)(long fd, const void *buf, long count) {
1601 if (buf) PRE_READ(buf, count);
1604 POST_SYSCALL(write)(long res, long fd, const void *buf, long count) {}
1606 PRE_SYSCALL(writev)(long fd, const __sanitizer_iovec *vec, long vlen) {}
1608 POST_SYSCALL(writev)(long res, long fd, const __sanitizer_iovec *vec,
1611 if (vec) kernel_read_iovec(vec, vlen, res);
1616 PRE_SYSCALL(pread64)(long fd, void *buf, long count, long pos) {}
1618 POST_SYSCALL(pread64)(long res, long fd, void *buf, long count, long pos) {
1620 if (buf) POST_WRITE(buf, res);
1624 PRE_SYSCALL(pwrite64)(long fd, const void *buf, long count, long pos) {
1625 if (buf) PRE_READ(buf, count);
1628 POST_SYSCALL(pwrite64)(long res, long fd, const void *buf, long count,
1631 PRE_SYSCALL(pread64)(long fd, void *buf, long count, long pos0, long pos1) {}
1633 POST_SYSCALL(pread64)(long res, long fd, void *buf, long count, long pos0,
1636 if (buf) POST_WRITE(buf, res);
1640 PRE_SYSCALL(pwrite64)(long fd, const void *buf, long count, long pos0,
1642 if (buf) PRE_READ(buf, count);
1645 POST_SYSCALL(pwrite64)(long res, long fd, const void *buf, long count,
1646 long pos0, long pos1) {}
1649 PRE_SYSCALL(preadv)(long fd, const __sanitizer_iovec *vec, long vlen,
1650 long pos_l, long pos_h) {}
1652 POST_SYSCALL(preadv)(long res, long fd, const __sanitizer_iovec *vec, long vlen,
1653 long pos_l, long pos_h) {
1655 if (vec) kernel_write_iovec(vec, vlen, res);
1659 PRE_SYSCALL(pwritev)(long fd, const __sanitizer_iovec *vec, long vlen,
1660 long pos_l, long pos_h) {}
1662 POST_SYSCALL(pwritev)(long res, long fd, const __sanitizer_iovec *vec,
1663 long vlen, long pos_l, long pos_h) {
1665 if (vec) kernel_read_iovec(vec, vlen, res);
1669 PRE_SYSCALL(getcwd)(void *buf, long size) {}
1671 POST_SYSCALL(getcwd)(long res, void *buf, long size) {
1674 POST_WRITE(buf, __sanitizer::internal_strlen((const char *)buf) + 1);
1678 PRE_SYSCALL(mkdir)(const void *pathname, long mode) {
1681 __sanitizer::internal_strlen((const char *)pathname) + 1);
1684 POST_SYSCALL(mkdir)(long res, const void *pathname, long mode) {}
1686 PRE_SYSCALL(chdir)(const void *filename) {
1689 __sanitizer::internal_strlen((const char *)filename) + 1);
1692 POST_SYSCALL(chdir)(long res, const void *filename) {}
1694 PRE_SYSCALL(fchdir)(long fd) {}
1696 POST_SYSCALL(fchdir)(long res, long fd) {}
1698 PRE_SYSCALL(rmdir)(const void *pathname) {
1701 __sanitizer::internal_strlen((const char *)pathname) + 1);
1704 POST_SYSCALL(rmdir)(long res, const void *pathname) {}
1706 PRE_SYSCALL(lookup_dcookie)(u64 cookie64, void *buf, long len) {}
1708 POST_SYSCALL(lookup_dcookie)(long res, u64 cookie64, void *buf, long len) {
1711 POST_WRITE(buf, __sanitizer::internal_strlen((const char *)buf) + 1);
1715 PRE_SYSCALL(quotactl)(long cmd, const void *special, long id, void *addr) {
1717 PRE_READ(special, __sanitizer::internal_strlen((const char *)special) + 1);
1720 POST_SYSCALL(quotactl)(long res, long cmd, const void *special, long id,
1723 PRE_SYSCALL(getdents)(long fd, void *dirent, long count) {}
1725 POST_SYSCALL(getdents)(long res, long fd, void *dirent, long count) {
1727 if (dirent) POST_WRITE(dirent, res);
1731 PRE_SYSCALL(getdents64)(long fd, void *dirent, long count) {}
1733 POST_SYSCALL(getdents64)(long res, long fd, void *dirent, long count) {
1735 if (dirent) POST_WRITE(dirent, res);
1739 PRE_SYSCALL(setsockopt)(long fd, long level, long optname, void *optval,
1742 POST_SYSCALL(setsockopt)(long res, long fd, long level, long optname,
1743 void *optval, long optlen) {
1747 __sanitizer::internal_strlen((const char *)optval) + 1);
1751 PRE_SYSCALL(getsockopt)(long fd, long level, long optname, void *optval,
1754 POST_SYSCALL(getsockopt)(long res, long fd, long level, long optname,
1755 void *optval, void *optlen) {
1759 __sanitizer::internal_strlen((const char *)optval) + 1);
1760 if (optlen) POST_WRITE(optlen, sizeof(int));
1764 PRE_SYSCALL(bind)(long arg0, sanitizer_kernel_sockaddr *arg1, long arg2) {}
1766 POST_SYSCALL(bind)(long res, long arg0, sanitizer_kernel_sockaddr *arg1,
1769 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
1773 PRE_SYSCALL(connect)(long arg0, sanitizer_kernel_sockaddr *arg1, long arg2) {}
1775 POST_SYSCALL(connect)(long res, long arg0, sanitizer_kernel_sockaddr *arg1,
1778 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
1782 PRE_SYSCALL(accept)(long arg0, sanitizer_kernel_sockaddr *arg1, void *arg2) {}
1784 POST_SYSCALL(accept)(long res, long arg0, sanitizer_kernel_sockaddr *arg1,
1787 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
1788 if (arg2) POST_WRITE(arg2, sizeof(unsigned));
1792 PRE_SYSCALL(accept4)(long arg0, sanitizer_kernel_sockaddr *arg1, void *arg2,
1795 POST_SYSCALL(accept4)(long res, long arg0, sanitizer_kernel_sockaddr *arg1,
1796 void *arg2, long arg3) {
1798 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
1799 if (arg2) POST_WRITE(arg2, sizeof(unsigned));
1803 PRE_SYSCALL(getsockname)(long arg0, sanitizer_kernel_sockaddr *arg1,
1806 POST_SYSCALL(getsockname)(long res, long arg0, sanitizer_kernel_sockaddr *arg1,
1809 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
1810 if (arg2) POST_WRITE(arg2, sizeof(unsigned));
1814 PRE_SYSCALL(getpeername)(long arg0, sanitizer_kernel_sockaddr *arg1,
1817 POST_SYSCALL(getpeername)(long res, long arg0, sanitizer_kernel_sockaddr *arg1,
1820 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
1821 if (arg2) POST_WRITE(arg2, sizeof(unsigned));
1825 PRE_SYSCALL(send)(long arg0, void *arg1, long arg2, long arg3) {}
1827 POST_SYSCALL(send)(long res, long arg0, void *arg1, long arg2, long arg3) {
1829 if (arg1) POST_READ(arg1, res);
1833 PRE_SYSCALL(sendto)(long arg0, void *arg1, long arg2, long arg3,
1834 sanitizer_kernel_sockaddr *arg4, long arg5) {}
1836 POST_SYSCALL(sendto)(long res, long arg0, void *arg1, long arg2, long arg3,
1837 sanitizer_kernel_sockaddr *arg4, long arg5) {
1839 if (arg1) POST_READ(arg1, res);
1840 if (arg4) POST_WRITE(arg4, sizeof(*arg4));
1844 PRE_SYSCALL(sendmsg)(long fd, void *msg, long flags) {}
1846 POST_SYSCALL(sendmsg)(long res, long fd, void *msg, long flags) {
1850 PRE_SYSCALL(sendmmsg)(long fd, void *msg, long vlen, long flags) {}
1852 POST_SYSCALL(sendmmsg)(long res, long fd, void *msg, long vlen, long flags) {
1856 PRE_SYSCALL(recv)(long arg0, void *buf, long len, long flags) {}
1858 POST_SYSCALL(recv)(long res, void *buf, long len, long flags) {
1860 if (buf) POST_WRITE(buf, res);
1864 PRE_SYSCALL(recvfrom)(long arg0, void *buf, long len, long flags,
1865 sanitizer_kernel_sockaddr *arg4, void *arg5) {}
1867 POST_SYSCALL(recvfrom)(long res, long arg0, void *buf, long len, long flags,
1868 sanitizer_kernel_sockaddr *arg4, void *arg5) {
1870 if (buf) POST_WRITE(buf, res);
1871 if (arg4) POST_WRITE(arg4, sizeof(*arg4));
1872 if (arg5) POST_WRITE(arg5, sizeof(int));
1876 PRE_SYSCALL(socket)(long arg0, long arg1, long arg2) {}
1878 POST_SYSCALL(socket)(long res, long arg0, long arg1, long arg2) {}
1880 PRE_SYSCALL(socketpair)(long arg0, long arg1, long arg2, int *sv) {}
1882 POST_SYSCALL(socketpair)(long res, long arg0, long arg1, long arg2, int *sv) {
1884 if (sv) POST_WRITE(sv, sizeof(int) * 2);
1887 PRE_SYSCALL(socketcall)(long call, void *args) {}
1889 POST_SYSCALL(socketcall)(long res, long call, void *args) {
1891 if (args) POST_WRITE(args, sizeof(long));
1895 PRE_SYSCALL(listen)(long arg0, long arg1) {}
1897 POST_SYSCALL(listen)(long res, long arg0, long arg1) {}
1899 PRE_SYSCALL(poll)(void *ufds, long nfds, long timeout) {}
1901 POST_SYSCALL(poll)(long res, __sanitizer_pollfd *ufds, long nfds,
1904 if (ufds) POST_WRITE(ufds, nfds * sizeof(*ufds));
1908 PRE_SYSCALL(select)(long n, __sanitizer___kernel_fd_set *inp,
1909 __sanitizer___kernel_fd_set *outp,
1910 __sanitizer___kernel_fd_set *exp, void *tvp) {}
1912 POST_SYSCALL(select)(long res, long n, __sanitizer___kernel_fd_set *inp,
1913 __sanitizer___kernel_fd_set *outp,
1914 __sanitizer___kernel_fd_set *exp, void *tvp) {
1916 if (inp) POST_WRITE(inp, sizeof(*inp));
1917 if (outp) POST_WRITE(outp, sizeof(*outp));
1918 if (exp) POST_WRITE(exp, sizeof(*exp));
1919 if (tvp) POST_WRITE(tvp, timeval_sz);
1923 PRE_SYSCALL(old_select)(void *arg) {}
1925 POST_SYSCALL(old_select)(long res, void *arg) {}
1927 PRE_SYSCALL(epoll_create)(long size) {}
1929 POST_SYSCALL(epoll_create)(long res, long size) {}
1931 PRE_SYSCALL(epoll_create1)(long flags) {}
1933 POST_SYSCALL(epoll_create1)(long res, long flags) {}
1935 PRE_SYSCALL(epoll_ctl)(long epfd, long op, long fd, void *event) {}
1937 POST_SYSCALL(epoll_ctl)(long res, long epfd, long op, long fd, void *event) {
1939 if (event) POST_WRITE(event, struct_epoll_event_sz);
1943 PRE_SYSCALL(epoll_wait)(long epfd, void *events, long maxevents, long timeout) {
1946 POST_SYSCALL(epoll_wait)(long res, long epfd, void *events, long maxevents,
1949 if (events) POST_WRITE(events, struct_epoll_event_sz);
1953 PRE_SYSCALL(epoll_pwait)(long epfd, void *events, long maxevents, long timeout,
1954 const kernel_sigset_t *sigmask, long sigsetsize) {
1955 if (sigmask) PRE_READ(sigmask, sigsetsize);
1958 POST_SYSCALL(epoll_pwait)(long res, long epfd, void *events, long maxevents,
1959 long timeout, const void *sigmask, long sigsetsize) {
1961 if (events) POST_WRITE(events, struct_epoll_event_sz);
1965 PRE_SYSCALL(gethostname)(void *name, long len) {}
1967 POST_SYSCALL(gethostname)(long res, void *name, long len) {
1970 POST_WRITE(name, __sanitizer::internal_strlen((const char *)name) + 1);
1974 PRE_SYSCALL(sethostname)(void *name, long len) {}
1976 POST_SYSCALL(sethostname)(long res, void *name, long len) {
1979 POST_WRITE(name, __sanitizer::internal_strlen((const char *)name) + 1);
1983 PRE_SYSCALL(setdomainname)(void *name, long len) {}
1985 POST_SYSCALL(setdomainname)(long res, void *name, long len) {
1988 POST_WRITE(name, __sanitizer::internal_strlen((const char *)name) + 1);
1992 PRE_SYSCALL(newuname)(void *name) {}
1994 POST_SYSCALL(newuname)(long res, void *name) {
1996 if (name) POST_WRITE(name, struct_new_utsname_sz);
2000 PRE_SYSCALL(uname)(void *arg0) {}
2002 POST_SYSCALL(uname)(long res, void *arg0) {
2004 if (arg0) POST_WRITE(arg0, struct_old_utsname_sz);
2008 PRE_SYSCALL(olduname)(void *arg0) {}
2010 POST_SYSCALL(olduname)(long res, void *arg0) {
2012 if (arg0) POST_WRITE(arg0, struct_oldold_utsname_sz);
2016 PRE_SYSCALL(getrlimit)(long resource, void *rlim) {}
2018 POST_SYSCALL(getrlimit)(long res, long resource, void *rlim) {
2020 if (rlim) POST_WRITE(rlim, struct_rlimit_sz);
2024 PRE_SYSCALL(old_getrlimit)(long resource, void *rlim) {}
2026 POST_SYSCALL(old_getrlimit)(long res, long resource, void *rlim) {
2028 if (rlim) POST_WRITE(rlim, struct_rlimit_sz);
2032 PRE_SYSCALL(setrlimit)(long resource, void *rlim) {}
2034 POST_SYSCALL(setrlimit)(long res, long resource, void *rlim) {
2036 if (rlim) POST_WRITE(rlim, struct_rlimit_sz);
2040 #if !SANITIZER_ANDROID
2041 PRE_SYSCALL(prlimit64)(long pid, long resource, const void *new_rlim,
2043 if (new_rlim) PRE_READ(new_rlim, struct_rlimit64_sz);
2046 POST_SYSCALL(prlimit64)(long res, long pid, long resource, const void *new_rlim,
2049 if (old_rlim) POST_WRITE(old_rlim, struct_rlimit64_sz);
2054 PRE_SYSCALL(getrusage)(long who, void *ru) {}
2056 POST_SYSCALL(getrusage)(long res, long who, void *ru) {
2058 if (ru) POST_WRITE(ru, struct_rusage_sz);
2062 PRE_SYSCALL(umask)(long mask) {}
2064 POST_SYSCALL(umask)(long res, long mask) {}
2066 PRE_SYSCALL(msgget)(long key, long msgflg) {}
2068 POST_SYSCALL(msgget)(long res, long key, long msgflg) {}
2070 PRE_SYSCALL(msgsnd)(long msqid, void *msgp, long msgsz, long msgflg) {
2071 if (msgp) PRE_READ(msgp, msgsz);
2074 POST_SYSCALL(msgsnd)(long res, long msqid, void *msgp, long msgsz,
2077 PRE_SYSCALL(msgrcv)(long msqid, void *msgp, long msgsz, long msgtyp,
2080 POST_SYSCALL(msgrcv)(long res, long msqid, void *msgp, long msgsz, long msgtyp,
2083 if (msgp) POST_WRITE(msgp, res);
2087 #if !SANITIZER_ANDROID
2088 PRE_SYSCALL(msgctl)(long msqid, long cmd, void *buf) {}
2090 POST_SYSCALL(msgctl)(long res, long msqid, long cmd, void *buf) {
2092 if (buf) POST_WRITE(buf, struct_msqid_ds_sz);
2097 PRE_SYSCALL(semget)(long key, long nsems, long semflg) {}
2099 POST_SYSCALL(semget)(long res, long key, long nsems, long semflg) {}
2101 PRE_SYSCALL(semop)(long semid, void *sops, long nsops) {}
2103 POST_SYSCALL(semop)(long res, long semid, void *sops, long nsops) {}
2105 PRE_SYSCALL(semctl)(long semid, long semnum, long cmd, void *arg) {}
2107 POST_SYSCALL(semctl)(long res, long semid, long semnum, long cmd, void *arg) {}
2109 PRE_SYSCALL(semtimedop)(long semid, void *sops, long nsops,
2110 const void *timeout) {
2111 if (timeout) PRE_READ(timeout, struct_timespec_sz);
2114 POST_SYSCALL(semtimedop)(long res, long semid, void *sops, long nsops,
2115 const void *timeout) {}
2117 PRE_SYSCALL(shmat)(long shmid, void *shmaddr, long shmflg) {}
2119 POST_SYSCALL(shmat)(long res, long shmid, void *shmaddr, long shmflg) {
2123 __sanitizer::internal_strlen((const char *)shmaddr) + 1);
2127 PRE_SYSCALL(shmget)(long key, long size, long flag) {}
2129 POST_SYSCALL(shmget)(long res, long key, long size, long flag) {}
2131 PRE_SYSCALL(shmdt)(void *shmaddr) {}
2133 POST_SYSCALL(shmdt)(long res, void *shmaddr) {
2137 __sanitizer::internal_strlen((const char *)shmaddr) + 1);
2141 PRE_SYSCALL(ipc)(long call, long first, long second, long third, void *ptr,
2144 POST_SYSCALL(ipc)(long res, long call, long first, long second, long third,
2145 void *ptr, long fifth) {}
2147 #if !SANITIZER_ANDROID
2148 PRE_SYSCALL(shmctl)(long shmid, long cmd, void *buf) {}
2150 POST_SYSCALL(shmctl)(long res, long shmid, long cmd, void *buf) {
2152 if (buf) POST_WRITE(buf, sizeof(__sanitizer_shmid_ds));
2156 PRE_SYSCALL(mq_open)(const void *name, long oflag, long mode, void *attr) {
2158 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
2161 POST_SYSCALL(mq_open)(long res, const void *name, long oflag, long mode,
2164 if (attr) POST_WRITE(attr, struct_mq_attr_sz);
2168 PRE_SYSCALL(mq_unlink)(const void *name) {
2170 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
2173 POST_SYSCALL(mq_unlink)(long res, const void *name) {}
2175 PRE_SYSCALL(mq_timedsend)(long mqdes, const void *msg_ptr, long msg_len,
2176 long msg_prio, const void *abs_timeout) {
2177 if (msg_ptr) PRE_READ(msg_ptr, msg_len);
2178 if (abs_timeout) PRE_READ(abs_timeout, struct_timespec_sz);
2181 POST_SYSCALL(mq_timedsend)(long res, long mqdes, const void *msg_ptr,
2182 long msg_len, long msg_prio,
2183 const void *abs_timeout) {}
2185 PRE_SYSCALL(mq_timedreceive)(long mqdes, void *msg_ptr, long msg_len,
2186 void *msg_prio, const void *abs_timeout) {
2187 if (abs_timeout) PRE_READ(abs_timeout, struct_timespec_sz);
2190 POST_SYSCALL(mq_timedreceive)(long res, long mqdes, void *msg_ptr, long msg_len,
2191 int *msg_prio, const void *abs_timeout) {
2193 if (msg_ptr) POST_WRITE(msg_ptr, res);
2194 if (msg_prio) POST_WRITE(msg_prio, sizeof(*msg_prio));
2198 PRE_SYSCALL(mq_notify)(long mqdes, const void *notification) {
2199 if (notification) PRE_READ(notification, struct_sigevent_sz);
2202 POST_SYSCALL(mq_notify)(long res, long mqdes, const void *notification) {}
2204 PRE_SYSCALL(mq_getsetattr)(long mqdes, const void *mqstat, void *omqstat) {
2205 if (mqstat) PRE_READ(mqstat, struct_mq_attr_sz);
2208 POST_SYSCALL(mq_getsetattr)(long res, long mqdes, const void *mqstat,
2211 if (omqstat) POST_WRITE(omqstat, struct_mq_attr_sz);
2214 #endif // SANITIZER_ANDROID
2216 PRE_SYSCALL(pciconfig_iobase)(long which, long bus, long devfn) {}
2218 POST_SYSCALL(pciconfig_iobase)(long res, long which, long bus, long devfn) {}
2220 PRE_SYSCALL(pciconfig_read)(long bus, long dfn, long off, long len, void *buf) {
2223 POST_SYSCALL(pciconfig_read)(long res, long bus, long dfn, long off, long len,
2226 PRE_SYSCALL(pciconfig_write)(long bus, long dfn, long off, long len,
2229 POST_SYSCALL(pciconfig_write)(long res, long bus, long dfn, long off, long len,
2232 PRE_SYSCALL(swapon)(const void *specialfile, long swap_flags) {
2234 PRE_READ(specialfile,
2235 __sanitizer::internal_strlen((const char *)specialfile) + 1);
2238 POST_SYSCALL(swapon)(long res, const void *specialfile, long swap_flags) {}
2240 PRE_SYSCALL(swapoff)(const void *specialfile) {
2242 PRE_READ(specialfile,
2243 __sanitizer::internal_strlen((const char *)specialfile) + 1);
2246 POST_SYSCALL(swapoff)(long res, const void *specialfile) {}
2248 PRE_SYSCALL(sysctl)(__sanitizer___sysctl_args *args) {
2250 if (args->name) PRE_READ(args->name, args->nlen * sizeof(*args->name));
2251 if (args->newval) PRE_READ(args->name, args->newlen);
2255 POST_SYSCALL(sysctl)(long res, __sanitizer___sysctl_args *args) {
2257 if (args && args->oldval && args->oldlenp) {
2258 POST_WRITE(args->oldlenp, sizeof(*args->oldlenp));
2259 POST_WRITE(args->oldval, *args->oldlenp);
2264 PRE_SYSCALL(sysinfo)(void *info) {}
2266 POST_SYSCALL(sysinfo)(long res, void *info) {
2268 if (info) POST_WRITE(info, struct_sysinfo_sz);
2272 PRE_SYSCALL(sysfs)(long option, long arg1, long arg2) {}
2274 POST_SYSCALL(sysfs)(long res, long option, long arg1, long arg2) {}
2276 PRE_SYSCALL(syslog)(long type, void *buf, long len) {}
2278 POST_SYSCALL(syslog)(long res, long type, void *buf, long len) {
2281 POST_WRITE(buf, __sanitizer::internal_strlen((const char *)buf) + 1);
2285 PRE_SYSCALL(uselib)(const void *library) {
2287 PRE_READ(library, __sanitizer::internal_strlen((const char *)library) + 1);
2290 POST_SYSCALL(uselib)(long res, const void *library) {}
2292 PRE_SYSCALL(ni_syscall)() {}
2294 POST_SYSCALL(ni_syscall)(long res) {}
2296 PRE_SYSCALL(ptrace)(long request, long pid, long addr, long data) {
2297 #if !SANITIZER_ANDROID && \
2298 (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
2299 defined(__powerpc64__) || defined(__aarch64__) || defined(__s390__))
2301 if (request == ptrace_setregs) {
2302 PRE_READ((void *)data, struct_user_regs_struct_sz);
2303 } else if (request == ptrace_setfpregs) {
2304 PRE_READ((void *)data, struct_user_fpregs_struct_sz);
2305 } else if (request == ptrace_setfpxregs) {
2306 PRE_READ((void *)data, struct_user_fpxregs_struct_sz);
2307 } else if (request == ptrace_setsiginfo) {
2308 PRE_READ((void *)data, siginfo_t_sz);
2309 } else if (request == ptrace_setregset) {
2310 __sanitizer_iovec *iov = (__sanitizer_iovec *)data;
2311 PRE_READ(iov->iov_base, iov->iov_len);
2317 POST_SYSCALL(ptrace)(long res, long request, long pid, long addr, long data) {
2318 #if !SANITIZER_ANDROID && \
2319 (defined(__i386) || defined(__x86_64) || defined(__mips64) || \
2320 defined(__powerpc64__) || defined(__aarch64__) || defined(__s390__))
2321 if (res >= 0 && data) {
2322 // Note that this is different from the interceptor in
2323 // sanitizer_common_interceptors.inc.
2324 // PEEK* requests return resulting values through data pointer.
2325 if (request == ptrace_getregs) {
2326 POST_WRITE((void *)data, struct_user_regs_struct_sz);
2327 } else if (request == ptrace_getfpregs) {
2328 POST_WRITE((void *)data, struct_user_fpregs_struct_sz);
2329 } else if (request == ptrace_getfpxregs) {
2330 POST_WRITE((void *)data, struct_user_fpxregs_struct_sz);
2331 } else if (request == ptrace_getsiginfo) {
2332 POST_WRITE((void *)data, siginfo_t_sz);
2333 } else if (request == ptrace_getregset) {
2334 __sanitizer_iovec *iov = (__sanitizer_iovec *)data;
2335 POST_WRITE(iov->iov_base, iov->iov_len);
2336 } else if (request == ptrace_peekdata || request == ptrace_peektext ||
2337 request == ptrace_peekuser) {
2338 POST_WRITE((void *)data, sizeof(void *));
2344 PRE_SYSCALL(add_key)(const void *_type, const void *_description,
2345 const void *_payload, long plen, long destringid) {
2347 PRE_READ(_type, __sanitizer::internal_strlen((const char *)_type) + 1);
2349 PRE_READ(_description,
2350 __sanitizer::internal_strlen((const char *)_description) + 1);
2353 POST_SYSCALL(add_key)(long res, const void *_type, const void *_description,
2354 const void *_payload, long plen, long destringid) {}
2356 PRE_SYSCALL(request_key)(const void *_type, const void *_description,
2357 const void *_callout_info, long destringid) {
2359 PRE_READ(_type, __sanitizer::internal_strlen((const char *)_type) + 1);
2361 PRE_READ(_description,
2362 __sanitizer::internal_strlen((const char *)_description) + 1);
2364 PRE_READ(_callout_info,
2365 __sanitizer::internal_strlen((const char *)_callout_info) + 1);
2368 POST_SYSCALL(request_key)(long res, const void *_type, const void *_description,
2369 const void *_callout_info, long destringid) {}
2371 PRE_SYSCALL(keyctl)(long cmd, long arg2, long arg3, long arg4, long arg5) {}
2373 POST_SYSCALL(keyctl)(long res, long cmd, long arg2, long arg3, long arg4,
2376 PRE_SYSCALL(ioprio_set)(long which, long who, long ioprio) {}
2378 POST_SYSCALL(ioprio_set)(long res, long which, long who, long ioprio) {}
2380 PRE_SYSCALL(ioprio_get)(long which, long who) {}
2382 POST_SYSCALL(ioprio_get)(long res, long which, long who) {}
2384 PRE_SYSCALL(set_mempolicy)(long mode, void *nmask, long maxnode) {}
2386 POST_SYSCALL(set_mempolicy)(long res, long mode, void *nmask, long maxnode) {
2388 if (nmask) POST_WRITE(nmask, sizeof(long));
2392 PRE_SYSCALL(migrate_pages)(long pid, long maxnode, const void *from,
2394 if (from) PRE_READ(from, sizeof(long));
2395 if (to) PRE_READ(to, sizeof(long));
2398 POST_SYSCALL(migrate_pages)(long res, long pid, long maxnode, const void *from,
2401 PRE_SYSCALL(move_pages)(long pid, long nr_pages, const void **pages,
2402 const int *nodes, int *status, long flags) {
2403 if (pages) PRE_READ(pages, nr_pages * sizeof(*pages));
2404 if (nodes) PRE_READ(nodes, nr_pages * sizeof(*nodes));
2407 POST_SYSCALL(move_pages)(long res, long pid, long nr_pages, const void **pages,
2408 const int *nodes, int *status, long flags) {
2410 if (status) POST_WRITE(status, nr_pages * sizeof(*status));
2414 PRE_SYSCALL(mbind)(long start, long len, long mode, void *nmask, long maxnode,
2417 POST_SYSCALL(mbind)(long res, long start, long len, long mode, void *nmask,
2418 long maxnode, long flags) {
2420 if (nmask) POST_WRITE(nmask, sizeof(long));
2424 PRE_SYSCALL(get_mempolicy)(void *policy, void *nmask, long maxnode, long addr,
2427 POST_SYSCALL(get_mempolicy)(long res, void *policy, void *nmask, long maxnode,
2428 long addr, long flags) {
2430 if (policy) POST_WRITE(policy, sizeof(int));
2431 if (nmask) POST_WRITE(nmask, sizeof(long));
2435 PRE_SYSCALL(inotify_init)() {}
2437 POST_SYSCALL(inotify_init)(long res) {}
2439 PRE_SYSCALL(inotify_init1)(long flags) {}
2441 POST_SYSCALL(inotify_init1)(long res, long flags) {}
2443 PRE_SYSCALL(inotify_add_watch)(long fd, const void *path, long mask) {
2445 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
2448 POST_SYSCALL(inotify_add_watch)(long res, long fd, const void *path,
2451 PRE_SYSCALL(inotify_rm_watch)(long fd, long wd) {}
2453 POST_SYSCALL(inotify_rm_watch)(long res, long fd, long wd) {}
2455 PRE_SYSCALL(spu_run)(long fd, void *unpc, void *ustatus) {}
2457 POST_SYSCALL(spu_run)(long res, long fd, unsigned *unpc, unsigned *ustatus) {
2459 if (unpc) POST_WRITE(unpc, sizeof(*unpc));
2460 if (ustatus) POST_WRITE(ustatus, sizeof(*ustatus));
2464 PRE_SYSCALL(spu_create)(const void *name, long flags, long mode, long fd) {
2466 PRE_READ(name, __sanitizer::internal_strlen((const char *)name) + 1);
2469 POST_SYSCALL(spu_create)(long res, const void *name, long flags, long mode,
2472 PRE_SYSCALL(mknodat)(long dfd, const void *filename, long mode, long dev) {
2475 __sanitizer::internal_strlen((const char *)filename) + 1);
2478 POST_SYSCALL(mknodat)(long res, long dfd, const void *filename, long mode,
2481 PRE_SYSCALL(mkdirat)(long dfd, const void *pathname, long mode) {
2484 __sanitizer::internal_strlen((const char *)pathname) + 1);
2487 POST_SYSCALL(mkdirat)(long res, long dfd, const void *pathname, long mode) {}
2489 PRE_SYSCALL(unlinkat)(long dfd, const void *pathname, long flag) {
2492 __sanitizer::internal_strlen((const char *)pathname) + 1);
2495 POST_SYSCALL(unlinkat)(long res, long dfd, const void *pathname, long flag) {}
2497 PRE_SYSCALL(symlinkat)(const void *oldname, long newdfd, const void *newname) {
2499 PRE_READ(oldname, __sanitizer::internal_strlen((const char *)oldname) + 1);
2501 PRE_READ(newname, __sanitizer::internal_strlen((const char *)newname) + 1);
2504 POST_SYSCALL(symlinkat)(long res, const void *oldname, long newdfd,
2505 const void *newname) {}
2507 PRE_SYSCALL(linkat)(long olddfd, const void *oldname, long newdfd,
2508 const void *newname, long flags) {
2510 PRE_READ(oldname, __sanitizer::internal_strlen((const char *)oldname) + 1);
2512 PRE_READ(newname, __sanitizer::internal_strlen((const char *)newname) + 1);
2515 POST_SYSCALL(linkat)(long res, long olddfd, const void *oldname, long newdfd,
2516 const void *newname, long flags) {}
2518 PRE_SYSCALL(renameat)(long olddfd, const void *oldname, long newdfd,
2519 const void *newname) {
2521 PRE_READ(oldname, __sanitizer::internal_strlen((const char *)oldname) + 1);
2523 PRE_READ(newname, __sanitizer::internal_strlen((const char *)newname) + 1);
2526 POST_SYSCALL(renameat)(long res, long olddfd, const void *oldname, long newdfd,
2527 const void *newname) {}
2529 PRE_SYSCALL(futimesat)(long dfd, const void *filename, void *utimes) {
2532 __sanitizer::internal_strlen((const char *)filename) + 1);
2535 POST_SYSCALL(futimesat)(long res, long dfd, const void *filename,
2538 if (utimes) POST_WRITE(utimes, timeval_sz);
2542 PRE_SYSCALL(faccessat)(long dfd, const void *filename, long mode) {
2545 __sanitizer::internal_strlen((const char *)filename) + 1);
2548 POST_SYSCALL(faccessat)(long res, long dfd, const void *filename, long mode) {}
2550 PRE_SYSCALL(fchmodat)(long dfd, const void *filename, long mode) {
2553 __sanitizer::internal_strlen((const char *)filename) + 1);
2556 POST_SYSCALL(fchmodat)(long res, long dfd, const void *filename, long mode) {}
2558 PRE_SYSCALL(fchownat)(long dfd, const void *filename, long user, long group,
2562 __sanitizer::internal_strlen((const char *)filename) + 1);
2565 POST_SYSCALL(fchownat)(long res, long dfd, const void *filename, long user,
2566 long group, long flag) {}
2568 PRE_SYSCALL(openat)(long dfd, const void *filename, long flags, long mode) {
2571 __sanitizer::internal_strlen((const char *)filename) + 1);
2574 POST_SYSCALL(openat)(long res, long dfd, const void *filename, long flags,
2577 PRE_SYSCALL(newfstatat)(long dfd, const void *filename, void *statbuf,
2581 __sanitizer::internal_strlen((const char *)filename) + 1);
2584 POST_SYSCALL(newfstatat)(long res, long dfd, const void *filename,
2585 void *statbuf, long flag) {
2587 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat_sz);
2591 PRE_SYSCALL(fstatat64)(long dfd, const void *filename, void *statbuf,
2595 __sanitizer::internal_strlen((const char *)filename) + 1);
2598 POST_SYSCALL(fstatat64)(long res, long dfd, const void *filename, void *statbuf,
2601 if (statbuf) POST_WRITE(statbuf, struct_kernel_stat64_sz);
2605 PRE_SYSCALL(readlinkat)(long dfd, const void *path, void *buf, long bufsiz) {
2607 PRE_READ(path, __sanitizer::internal_strlen((const char *)path) + 1);
2610 POST_SYSCALL(readlinkat)(long res, long dfd, const void *path, void *buf,
2614 POST_WRITE(buf, __sanitizer::internal_strlen((const char *)buf) + 1);
2618 PRE_SYSCALL(utimensat)(long dfd, const void *filename, void *utimes,
2622 __sanitizer::internal_strlen((const char *)filename) + 1);
2625 POST_SYSCALL(utimensat)(long res, long dfd, const void *filename, void *utimes,
2628 if (utimes) POST_WRITE(utimes, struct_timespec_sz);
2632 PRE_SYSCALL(unshare)(long unshare_flags) {}
2634 POST_SYSCALL(unshare)(long res, long unshare_flags) {}
2636 PRE_SYSCALL(splice)(long fd_in, void *off_in, long fd_out, void *off_out,
2637 long len, long flags) {}
2639 POST_SYSCALL(splice)(long res, long fd_in, void *off_in, long fd_out,
2640 void *off_out, long len, long flags) {
2642 if (off_in) POST_WRITE(off_in, sizeof(long long));
2643 if (off_out) POST_WRITE(off_out, sizeof(long long));
2647 PRE_SYSCALL(vmsplice)(long fd, const __sanitizer_iovec *iov, long nr_segs,
2650 POST_SYSCALL(vmsplice)(long res, long fd, const __sanitizer_iovec *iov,
2651 long nr_segs, long flags) {
2653 if (iov) kernel_read_iovec(iov, nr_segs, res);
2657 PRE_SYSCALL(tee)(long fdin, long fdout, long len, long flags) {}
2659 POST_SYSCALL(tee)(long res, long fdin, long fdout, long len, long flags) {}
2661 PRE_SYSCALL(get_robust_list)(long pid, void *head_ptr, void *len_ptr) {}
2663 POST_SYSCALL(get_robust_list)(long res, long pid, void *head_ptr,
2666 PRE_SYSCALL(set_robust_list)(void *head, long len) {}
2668 POST_SYSCALL(set_robust_list)(long res, void *head, long len) {}
2670 PRE_SYSCALL(getcpu)(void *cpu, void *node, void *cache) {}
2672 POST_SYSCALL(getcpu)(long res, void *cpu, void *node, void *cache) {
2674 if (cpu) POST_WRITE(cpu, sizeof(unsigned));
2675 if (node) POST_WRITE(node, sizeof(unsigned));
2676 // The third argument to this system call is nowadays unused.
2680 PRE_SYSCALL(signalfd)(long ufd, void *user_mask, long sizemask) {}
2682 POST_SYSCALL(signalfd)(long res, long ufd, kernel_sigset_t *user_mask,
2685 if (user_mask) POST_WRITE(user_mask, sizemask);
2689 PRE_SYSCALL(signalfd4)(long ufd, void *user_mask, long sizemask, long flags) {}
2691 POST_SYSCALL(signalfd4)(long res, long ufd, kernel_sigset_t *user_mask,
2692 long sizemask, long flags) {
2694 if (user_mask) POST_WRITE(user_mask, sizemask);
2698 PRE_SYSCALL(timerfd_create)(long clockid, long flags) {}
2700 POST_SYSCALL(timerfd_create)(long res, long clockid, long flags) {}
2702 PRE_SYSCALL(timerfd_settime)(long ufd, long flags, const void *utmr,
2704 if (utmr) PRE_READ(utmr, struct_itimerspec_sz);
2707 POST_SYSCALL(timerfd_settime)(long res, long ufd, long flags, const void *utmr,
2710 if (otmr) POST_WRITE(otmr, struct_itimerspec_sz);
2714 PRE_SYSCALL(timerfd_gettime)(long ufd, void *otmr) {}
2716 POST_SYSCALL(timerfd_gettime)(long res, long ufd, void *otmr) {
2718 if (otmr) POST_WRITE(otmr, struct_itimerspec_sz);
2722 PRE_SYSCALL(eventfd)(long count) {}
2724 POST_SYSCALL(eventfd)(long res, long count) {}
2726 PRE_SYSCALL(eventfd2)(long count, long flags) {}
2728 POST_SYSCALL(eventfd2)(long res, long count, long flags) {}
2730 PRE_SYSCALL(old_readdir)(long arg0, void *arg1, long arg2) {}
2732 POST_SYSCALL(old_readdir)(long res, long arg0, void *arg1, long arg2) {
2733 // Missing definition of 'struct old_linux_dirent'.
2736 PRE_SYSCALL(pselect6)(long arg0, __sanitizer___kernel_fd_set *arg1,
2737 __sanitizer___kernel_fd_set *arg2,
2738 __sanitizer___kernel_fd_set *arg3, void *arg4,
2741 POST_SYSCALL(pselect6)(long res, long arg0, __sanitizer___kernel_fd_set *arg1,
2742 __sanitizer___kernel_fd_set *arg2,
2743 __sanitizer___kernel_fd_set *arg3, void *arg4,
2746 if (arg1) POST_WRITE(arg1, sizeof(*arg1));
2747 if (arg2) POST_WRITE(arg2, sizeof(*arg2));
2748 if (arg3) POST_WRITE(arg3, sizeof(*arg3));
2749 if (arg4) POST_WRITE(arg4, struct_timespec_sz);
2753 PRE_SYSCALL(ppoll)(__sanitizer_pollfd *arg0, long arg1, void *arg2,
2754 const kernel_sigset_t *arg3, long arg4) {
2755 if (arg3) PRE_READ(arg3, arg4);
2758 POST_SYSCALL(ppoll)(long res, __sanitizer_pollfd *arg0, long arg1, void *arg2,
2759 const void *arg3, long arg4) {
2761 if (arg0) POST_WRITE(arg0, sizeof(*arg0));
2762 if (arg2) POST_WRITE(arg2, struct_timespec_sz);
2766 PRE_SYSCALL(syncfs)(long fd) {}
2768 POST_SYSCALL(syncfs)(long res, long fd) {}
2770 PRE_SYSCALL(perf_event_open)(__sanitizer_perf_event_attr *attr_uptr, long pid,
2771 long cpu, long group_fd, long flags) {
2772 if (attr_uptr) PRE_READ(attr_uptr, attr_uptr->size);
2775 POST_SYSCALL(perf_event_open)(long res, __sanitizer_perf_event_attr *attr_uptr,
2776 long pid, long cpu, long group_fd, long flags) {}
2778 PRE_SYSCALL(mmap_pgoff)(long addr, long len, long prot, long flags, long fd,
2781 POST_SYSCALL(mmap_pgoff)(long res, long addr, long len, long prot, long flags,
2782 long fd, long pgoff) {}
2784 PRE_SYSCALL(old_mmap)(void *arg) {}
2786 POST_SYSCALL(old_mmap)(long res, void *arg) {}
2788 PRE_SYSCALL(name_to_handle_at)(long dfd, const void *name, void *handle,
2789 void *mnt_id, long flag) {}
2791 POST_SYSCALL(name_to_handle_at)(long res, long dfd, const void *name,
2792 void *handle, void *mnt_id, long flag) {}
2794 PRE_SYSCALL(open_by_handle_at)(long mountdirfd, void *handle, long flags) {}
2796 POST_SYSCALL(open_by_handle_at)(long res, long mountdirfd, void *handle,
2799 PRE_SYSCALL(setns)(long fd, long nstype) {}
2801 POST_SYSCALL(setns)(long res, long fd, long nstype) {}
2803 PRE_SYSCALL(process_vm_readv)(long pid, const __sanitizer_iovec *lvec,
2804 long liovcnt, const void *rvec, long riovcnt,
2807 POST_SYSCALL(process_vm_readv)(long res, long pid,
2808 const __sanitizer_iovec *lvec, long liovcnt,
2809 const void *rvec, long riovcnt, long flags) {
2811 if (lvec) kernel_write_iovec(lvec, liovcnt, res);
2815 PRE_SYSCALL(process_vm_writev)(long pid, const __sanitizer_iovec *lvec,
2816 long liovcnt, const void *rvec, long riovcnt,
2819 POST_SYSCALL(process_vm_writev)(long res, long pid,
2820 const __sanitizer_iovec *lvec, long liovcnt,
2821 const void *rvec, long riovcnt, long flags) {
2823 if (lvec) kernel_read_iovec(lvec, liovcnt, res);
2827 PRE_SYSCALL(fork)() {
2828 COMMON_SYSCALL_PRE_FORK();
2831 POST_SYSCALL(fork)(long res) {
2832 COMMON_SYSCALL_POST_FORK(res);
2835 PRE_SYSCALL(vfork)() {
2836 COMMON_SYSCALL_PRE_FORK();
2839 POST_SYSCALL(vfork)(long res) {
2840 COMMON_SYSCALL_POST_FORK(res);
2843 PRE_SYSCALL(sigaction)(long signum, const __sanitizer_kernel_sigaction_t *act,
2844 __sanitizer_kernel_sigaction_t *oldact) {
2846 PRE_READ(&act->sigaction, sizeof(act->sigaction));
2847 PRE_READ(&act->sa_flags, sizeof(act->sa_flags));
2848 PRE_READ(&act->sa_mask, sizeof(act->sa_mask));
2852 POST_SYSCALL(sigaction)(long res, long signum,
2853 const __sanitizer_kernel_sigaction_t *act,
2854 __sanitizer_kernel_sigaction_t *oldact) {
2855 if (res >= 0 && oldact) POST_WRITE(oldact, sizeof(*oldact));
2858 PRE_SYSCALL(rt_sigaction)(long signum,
2859 const __sanitizer_kernel_sigaction_t *act,
2860 __sanitizer_kernel_sigaction_t *oldact, SIZE_T sz) {
2862 PRE_READ(&act->sigaction, sizeof(act->sigaction));
2863 PRE_READ(&act->sa_flags, sizeof(act->sa_flags));
2864 PRE_READ(&act->sa_mask, sz);
2868 POST_SYSCALL(rt_sigaction)(long res, long signum,
2869 const __sanitizer_kernel_sigaction_t *act,
2870 __sanitizer_kernel_sigaction_t *oldact, SIZE_T sz) {
2871 if (res >= 0 && oldact) {
2872 SIZE_T oldact_sz = ((char *)&oldact->sa_mask) - ((char *)oldact) + sz;
2873 POST_WRITE(oldact, oldact_sz);
2885 #endif // SANITIZER_LINUX