src/test/test-dissect-image.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <fcntl.h>
   4 #include <linux/loop.h>
   5 #include <stdio.h>
   6
   7 #include "dissect-image.h"
   8 #include "log.h"
   9 #include "loop-util.h"
  10 #include "string-util.h"
  11 #include "tests.h"
  12
  13 int main(int argc, char *argv[]) {
  14         _cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
  15         _cleanup_(dissected_image_unrefp) DissectedImage *m = NULL;
  16         int r, i;
  17
  18         test_setup_logging(LOG_DEBUG);
  19
  20         if (argc < 2) {
  21                 log_error("Requires one command line argument.");
  22                 return EXIT_FAILURE;
  23         }
  24
  25         r = loop_device_make_by_path(argv[1], O_RDONLY, LO_FLAGS_PARTSCAN, &d);
  26         if (r < 0) {
  27                 log_error_errno(r, "Failed to set up loopback device: %m");
  28                 return EXIT_FAILURE;
  29         }
  30
  31         r = dissect_image(d->fd, NULL, 0, NULL, NULL, DISSECT_IMAGE_REQUIRE_ROOT|DISSECT_IMAGE_RELAX_VAR_CHECK, &m);
  32         if (r < 0) {
  33                 log_error_errno(r, "Failed to dissect image: %m");
  34                 return EXIT_FAILURE;
  35         }
  36
  37         for (i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) {
  38
  39                 if (!m->partitions[i].found)
  40                         continue;
  41
  42                 printf("Found %s partition, %s of type %s at #%i (%s)\n",
  43                        partition_designator_to_string(i),
  44                        m->partitions[i].rw ? "writable" : "read-only",
  45                        strna(m->partitions[i].fstype),
  46                        m->partitions[i].partno,
  47                        strna(m->partitions[i].node));
  48         }
  49
  50         return EXIT_SUCCESS;
  51 }