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Commit 3fa9637e authored by Josh Gao's avatar Josh Gao
Browse files

crasher: add close(fileno(FILE*)) and close(dirfd(DIR*)). 

Add some cases to trigger fdsan aborts.

Test: crasher fdsan_file; crasher fdsan_dir
Change-Id: I48152d333dc25900f1c8d8e0f2e8728154643508
parent c954ec09

debuggerd/crasher/crasher.cpp

+40 −32
Original line number Diff line number Diff line
@@ -183,6 +183,8 @@ static int usage() { 
    fprintf(stderr, "  exit                  call exit(1)\n");

    fprintf(stderr, "\n");

    fprintf(stderr, "  fortify               fail a _FORTIFY_SOURCE check\n");

    fprintf(stderr, "  fdsan_file            close a file descriptor that's owned by a FILE*\n");

    fprintf(stderr, "  fdsan_dir             close a file descriptor that's owned by a DIR*\n");

    fprintf(stderr, "  seccomp               fail a seccomp check\n");

#if defined(__arm__)

    fprintf(stderr, "  kuser_helper_version  call kuser_helper_version\n");
@@ -260,6 +262,12 @@ noinline int do_action(const char* arg) { 
      char buf[10];

      __read_chk(-1, buf, 32, 10);

      while (true) pause();

    } else if (!strcasecmp(arg, "fdsan_file")) {

      FILE* f = fopen("/dev/null", "r");

      close(fileno(f));

    } else if (!strcasecmp(arg, "fdsan_dir")) {

      DIR* d = opendir("/dev/");

      close(dirfd(d));

    } else if (!strcasecmp(arg, "LOG(FATAL)")) {

      LOG(FATAL) << "hello " << 123;

    } else if (!strcasecmp(arg, "LOG_ALWAYS_FATAL")) {
@@ -295,8 +303,8 @@ noinline int do_action(const char* arg) { 
    } else if (!strcasecmp(arg, "leak")) {

      leak();

    } else if (!strcasecmp(arg, "SIGSEGV-unmapped")) {

        char* map = reinterpret_cast<char*>(mmap(nullptr, sizeof(int), PROT_READ | PROT_WRITE,

                                                 MAP_SHARED | MAP_ANONYMOUS, -1, 0));

      char* map = reinterpret_cast<char*>(

          mmap(nullptr, sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0));

      munmap(map, sizeof(int));

      map[0] = '8';

    } else if (!strcasecmp(arg, "seccomp")) {