src/libcompiler_builtins/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
   4 // REQUIRES: stable-runtime
   5 // XFAIL: android && asan
   6
   7 #include <errno.h>
   8 #include <fcntl.h>
   9 #include <pthread.h>
  10 #include <stdio.h>
  11 #include <sys/stat.h>
  12 #include <sys/types.h>
  13 #include <unistd.h>
  14
  15 bool CopyFdToFd(int in_fd, int out_fd) {
  16   const size_t kBufSize = 0x10000;
  17   static char buf[kBufSize];
  18   while (true) {
  19     ssize_t got = read(in_fd, buf, kBufSize);
  20     if (got > 0) {
  21       write(out_fd, buf, got);
  22     } else if (got == 0) {
  23       break;
  24     } else if (errno != EAGAIN || errno != EWOULDBLOCK || errno != EINTR) {
  25       fprintf(stderr, "error reading file, errno %d\n", errno);
  26       return false;
  27     }
  28   }
  29   return true;
  30 }
  31
  32 void *ThreadFn(void *arg) {
  33   (void)arg;
  34   int fd = open("/proc/self/maps", O_RDONLY);
  35   bool res = CopyFdToFd(fd, 2);
  36   close(fd);
  37   return (void *)!res;
  38 }
  39
  40 int main(void) {
  41   pthread_t t;
  42   void *res;
  43   pthread_create(&t, 0, ThreadFn, 0);
  44   pthread_join(t, &res);
  45   return (int)(size_t)res;
  46 }
  47
  48 // CHECK-asan: rw-p {{.*}} [low shadow]
  49 // CHECK-asan: ---p {{.*}} [shadow gap]
  50 // CHECK-asan: rw-p {{.*}} [high shadow]
  51
  52 // CHECK-msan: ---p {{.*}} [invalid]
  53 // CHECK-msan: rw-p {{.*}} [shadow{{.*}}]
  54 // CHECK-msan: ---p {{.*}} [origin{{.*}}]
  55
  56 // CHECK-tsan: rw-p {{.*}} [shadow]
  57 // CHECK-tsan: rw-p {{.*}} [meta shadow]
  58 // CHECK-tsan: rw-p {{.*}} [trace 0]
  59 // CHECK-tsan: rw-p {{.*}} [trace header 0]
  60 // CHECK-tsan: rw-p {{.*}} [trace 1]
  61 // CHECK-tsan: rw-p {{.*}} [trace header 1]
  62
  63 // Nothing interesting with standalone LSan and UBSan.
  64 // CHECK-lsan: decorate_proc_maps
  65 // CHECK-ubsan: decorate_proc_maps