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// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t 2>&1
// RUN: %clangxx_msan -m64 -O3 %s -o %t && %t 2>&1
#include <assert.h>
#include <errno.h>
#include <glob.h>
#include <stdio.h>
#include <string.h>
#include <sys/ptrace.h>
#include <sys/stat.h>
#include <sanitizer/linux_syscall_hooks.h>
#include <sanitizer/msan_interface.h>
/* Test the presence of __sanitizer_syscall_ in the tool runtime, and general
sanity of their behaviour. */
int main(int argc, char *argv[]) {
char buf[1000];
const int kTen = 10;
const int kFortyTwo = 42;
memset(buf, 0, sizeof(buf));
__msan_unpoison(buf, sizeof(buf));
__sanitizer_syscall_pre_recvmsg(0, buf, 0);
__sanitizer_syscall_pre_rt_sigpending(buf, kTen);
__sanitizer_syscall_pre_getdents(0, buf, kTen);
__sanitizer_syscall_pre_getdents64(0, buf, kTen);
__msan_unpoison(buf, sizeof(buf));
__sanitizer_syscall_post_recvmsg(0, 0, buf, 0);
__sanitizer_syscall_post_rt_sigpending(-1, buf, kTen);
__sanitizer_syscall_post_getdents(0, 0, buf, kTen);
__sanitizer_syscall_post_getdents64(0, 0, buf, kTen);
assert(__msan_test_shadow(buf, sizeof(buf)) == -1);
__msan_unpoison(buf, sizeof(buf));
__sanitizer_syscall_post_recvmsg(kTen, 0, buf, 0);
// Tell the kernel that the output struct size is 10 bytes, verify that those
// bytes are unpoisoned, and the next byte is not.
__msan_poison(buf, kTen + 1);
__sanitizer_syscall_post_rt_sigpending(0, buf, kTen);
assert(__msan_test_shadow(buf, sizeof(buf)) == kTen);
__msan_poison(buf, kTen + 1);
__sanitizer_syscall_post_getdents(kTen, 0, buf, kTen);
assert(__msan_test_shadow(buf, sizeof(buf)) == kTen);
__msan_poison(buf, kTen + 1);
__sanitizer_syscall_post_getdents64(kTen, 0, buf, kTen);
assert(__msan_test_shadow(buf, sizeof(buf)) == kTen);
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_clock_getres(0, 0, buf);
assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(long) * 2);
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_clock_gettime(0, 0, buf);
assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(long) * 2);
// Failed syscall does not write to the buffer.
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_clock_gettime(-1, 0, buf);
assert(__msan_test_shadow(buf, sizeof(buf)) == 0);
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_read(5, 42, buf, 10);
assert(__msan_test_shadow(buf, sizeof(buf)) == 5);
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_newfstatat(0, 5, "/path/to/file", buf, 0);
assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(struct stat));
__msan_poison(buf, sizeof(buf));
int prio = 0;
__sanitizer_syscall_post_mq_timedreceive(kFortyTwo, 5, buf, sizeof(buf), &prio, 0);
assert(__msan_test_shadow(buf, sizeof(buf)) == kFortyTwo);
assert(__msan_test_shadow(&prio, sizeof(prio)) == -1);
__msan_poison(buf, sizeof(buf));
__sanitizer_syscall_post_ptrace(0, PTRACE_PEEKUSER, kFortyTwo, 0xABCD, buf);
assert(__msan_test_shadow(buf, sizeof(buf)) == sizeof(void *));
return 0;
}
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