libblkid/src/fuzz.c

   1 #include "blkidP.h"
   2 #include "fuzz.h"
   3
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6
   7 static int process_file(const char *name)
   8 {
   9     int rc = -1;
  10     blkid_probe pr = blkid_new_probe_from_filename(name);
  11     if (pr != NULL) {
  12         blkid_probe_enable_partitions(pr, TRUE);
  13         blkid_probe_set_partitions_flags(pr, FALSE);
  14         blkid_probe_enable_superblocks(pr, TRUE);
  15         blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_DEFAULT | BLKID_SUBLKS_FSINFO | BLKID_SUBLKS_MAGIC | BLKID_SUBLKS_VERSION | BLKID_SUBLKS_BADCSUM);
  16         rc = blkid_do_safeprobe(pr) == -1 ? -1 : 0;
  17     }
  18     blkid_free_probe(pr);
  19     return rc;
  20 }
  21
  22 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  23     int fd;
  24     char name[] = "/tmp/test-script-fuzz.XXXXXX";
  25
  26     fd = mkostemp(name, O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC);
  27     if (fd == -1)
  28         err(EXIT_FAILURE, "mkostemp() failed");
  29
  30     if (write(fd, data, size) != (ssize_t)size)
  31         goto out;
  32
  33     process_file(name);
  34 out:
  35     close(fd);
  36     unlink(name);
  37     return 0;
  38 }
  39
  40 #ifndef FUZZ_TARGET
  41 int main(int argc, char **argv)
  42 {
  43     for (int i = 1; i < argc; i++) {
  44         printf("%s ", argv[i]);
  45         if (process_file(argv[i]) == 0)
  46             printf(" OK\n");
  47         else
  48             printf(" FAILED\n");
  49
  50     }
  51 }
  52 #endif