misc/check_fuzzer.c

   1 /*
   2  * Play with a file system image quickly to find UBSAN problems
   3  *
   4  * Run a file system through some of the libext2fs functions used by
   5  * some fuzzer reports.
   6  */
   7
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <stdlib.h>
  12 #include <time.h>
  13 #include <sys/types.h>
  14 #include <sys/time.h>
  15
  16 #include <ext2fs/ext2_fs.h>
  17 #include <ext2fs/ext2fs.h>
  18
  19 int main (int argc, char *argv[])
  20 {
  21         errcode_t       retval = 0;
  22         ext2_filsys     fs;
  23         int             exit_status = 1;
  24
  25         initialize_ext2_error_table();
  26
  27         if (argc != 2) {
  28                 fprintf(stderr, "%s: Usage <device|filesystem>\n", argv[0]);
  29                 exit(1);
  30         }
  31
  32         retval = ext2fs_open(argv[1], 0, 0, 0,
  33                              unix_io_manager, &fs);
  34         if (retval) {
  35                 com_err(argv[0], retval, "while trying to open '%s'",
  36                         argv[1]);
  37                 exit(1);
  38         }
  39
  40         retval = ext2fs_read_inode_bitmap(fs);
  41         if (retval) {
  42                 com_err(argv[0], retval, "while trying to read inode bitmaps");
  43                 goto errout;
  44         }
  45
  46         retval = ext2fs_read_block_bitmap(fs);
  47         if (retval) {
  48                 com_err(argv[0], retval, "while trying to read inode bitmaps");
  49                 goto errout;
  50         }
  51
  52         retval = ext2fs_check_directory(fs, EXT2_ROOT_INO);
  53         if (retval) {
  54                 com_err(argv[0], retval, "while trying to read inode bitmaps");
  55                 goto errout;
  56         }
  57         exit_status = 0;
  58 errout:
  59         ext2fs_close(fs);
  60         return exit_status;
  61 }