src/udev/mtd_probe/mtd_probe.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright © 2010 - Maxim Levitsky
   4  *
   5  * mtd_probe is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * mtd_probe is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with mtd_probe; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <errno.h>
  22 #include <fcntl.h>
  23 #include <mtd/mtd-user.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <sys/ioctl.h>
  27 #include <sys/stat.h>
  28 #include <sys/types.h>
  29 #include <unistd.h>
  30
  31 #include "alloc-util.h"
  32 #include "fd-util.h"
  33 #include "mtd_probe.h"
  34
  35 int main(int argc, char** argv) {
  36         _cleanup_close_ int mtd_fd = -1;
  37         mtd_info_t mtd_info;
  38
  39         if (argc != 2) {
  40                 printf("usage: mtd_probe /dev/mtd[n]\n");
  41                 return EXIT_FAILURE;
  42         }
  43
  44         mtd_fd = open(argv[1], O_RDONLY|O_CLOEXEC|O_NOCTTY);
  45         if (mtd_fd < 0) {
  46                 log_error_errno(errno, "Failed to open: %m");
  47                 return EXIT_FAILURE;
  48         }
  49
  50         if (ioctl(mtd_fd, MEMGETINFO, &mtd_info) < 0) {
  51                 log_error_errno(errno, "Failed to issue MEMGETINFO ioctl: %m");
  52                 return EXIT_FAILURE;
  53         }
  54
  55         if (probe_smart_media(mtd_fd, &mtd_info) < 0)
  56                 return EXIT_FAILURE;
  57
  58         return EXIT_SUCCESS;
  59 }