src/compiler-rt/test/sanitizer_common/TestCases/Linux/decorate_proc_maps.cc

   1 // RUN: %clangxx -g %s -o %t
   2 // RUN: %env_tool_opts=decorate_proc_maps=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%tool_name
   3 // REQUIRES: stable-runtime
   4 #include <errno.h>
   5 #include <fcntl.h>
   6 #include <pthread.h>
   7 #include <stdio.h>
   8 #include <sys/stat.h>
   9 #include <sys/types.h>
  10 #include <unistd.h>
  11
  12 bool CopyFdToFd(int in_fd, int out_fd) {
  13   const size_t kBufSize = 0x10000;
  14   static char buf[kBufSize];
  15   while (true) {
  16     ssize_t got = read(in_fd, buf, kBufSize);
  17     if (got > 0) {
  18       write(out_fd, buf, got);
  19     } else if (got == 0) {
  20       break;
  21     } else if (errno != EAGAIN || errno != EWOULDBLOCK || errno != EINTR) {
  22       fprintf(stderr, "error reading file, errno %d\n", errno);
  23       return false;
  24     }
  25   }
  26   return true;
  27 }
  28
  29 void *ThreadFn(void *arg) {
  30   (void)arg;
  31   int fd = open("/proc/self/maps", O_RDONLY);
  32   bool res = CopyFdToFd(fd, 2);
  33   close(fd);
  34   return (void *)!res;
  35 }
  36
  37 int main(void) {
  38   pthread_t t;
  39   void *res;
  40   pthread_create(&t, 0, ThreadFn, 0);
  41   pthread_join(t, &res);
  42   return (int)(size_t)res;
  43 }
  44
  45 // CHECK-asan: rw-p {{.*}} [low shadow]
  46 // CHECK-asan: ---p {{.*}} [shadow gap]
  47 // CHECK-asan: rw-p {{.*}} [high shadow]
  48
  49 // CHECK-msan: ---p {{.*}} [invalid]
  50 // CHECK-msan: rw-p {{.*}} [shadow{{.*}}]
  51 // CHECK-msan: ---p {{.*}} [origin{{.*}}]
  52
  53 // CHECK-tsan: rw-p {{.*}} [shadow]
  54 // CHECK-tsan: rw-p {{.*}} [meta shadow]
  55 // CHECK-tsan: rw-p {{.*}} [trace 0]
  56 // CHECK-tsan: rw-p {{.*}} [trace header 0]
  57 // CHECK-tsan: rw-p {{.*}} [trace 1]
  58 // CHECK-tsan: rw-p {{.*}} [trace header 1]
  59
  60 // Nothing interesting with standalone LSan.
  61 // CHECK-lsan: decorate_proc_maps