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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2009-08-06 07:26:49 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2009-08-06 07:26:49 +0000
commit239c51b9d3721badb2c393659cf176840e4398cc (patch)
tree2c7a71c255d0f7ab1c45701b04800e4c77d6e6f5 /include/ruby/backward
parent0c5a96025780f7edfe3bab503142a837bf34a345 (diff)
* encoding.c (valid_encoding_name_p): rejects too long encoding
names. git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@24424 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'include/ruby/backward')
0 files changed, 0 insertions, 0 deletions
generated by cgit (git 2.34.1) at 2026-04-24 11:23:41 +0000
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <guestfs.h>

static int
compare_keys_len (const void *p1, const void *p2)
{
  const char *key1 = * (char * const *) p1;
  const char *key2 = * (char * const *) p2;
  return strlen (key1) - strlen (key2);
}

static size_t
count_strings (char *const *argv)
{
  size_t c;

  for (c = 0; argv[c]; ++c)
    ;
  return c;
}

int
main (int argc, char *argv[])
{
  guestfs_h *g;
  const char *disk;
  char **roots, *root, **mountpoints, *icon;
  size_t i, j, icon_size;
  FILE *fp;

  if (argc != 2) {
    fprintf (stderr, "usage: display_icon disk.img\n");
    exit (EXIT_FAILURE);
  }
  disk = argv[1];

  g = guestfs_create ();
  if (g == NULL) {
    perror ("failed to create libguestfs handle");
    exit (EXIT_FAILURE);
  }

  /* Attach the disk image read-only to libguestfs. */
  if (guestfs_add_drive_opts (g, disk,
     /* GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw", */
        GUESTFS_ADD_DRIVE_OPTS_READONLY, 1,
        -1) /* this marks end of optional arguments */
      == -1)
    exit (EXIT_FAILURE);

  /* Run the libguestfs back-end. */
  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);

  /* Ask libguestfs to inspect for operating systems. */
  roots = guestfs_inspect_os (g);
  if (roots == NULL)
    exit (EXIT_FAILURE);
  if (roots[0] == NULL) {
    fprintf (stderr, "display_icon: no operating systems found\n");
    exit (EXIT_FAILURE);
  }

  for (j = 0; roots[j] != NULL; ++j) {
    root = roots[j];

    /* Mount up the disks, like guestfish -i.
     *
     * Sort keys by length, shortest first, so that we end up
     * mounting the filesystems in the correct order.
     */
    mountpoints = guestfs_inspect_get_mountpoints (g, root);
    if (mountpoints == NULL)
      exit (EXIT_FAILURE);

    qsort (mountpoints, count_strings (mountpoints) / 2, 2 * sizeof (char *),
           compare_keys_len);
    for (i = 0; mountpoints[i] != NULL; i += 2) {
      /* Ignore failures from this call, since bogus entries can
       * appear in the guest's /etc/fstab.
       */
      guestfs_mount_ro (g, mountpoints[i+1], mountpoints[i]);
      free (mountpoints[i]);
      free (mountpoints[i+1]);
    }
    free (mountpoints);

    /* Get the icon.
     * This function returns a buffer ('icon').  Normally it is a png
     * file, returned as a string, but it can also be a zero length
     * buffer which has a special meaning, or NULL which means there
     * was an error.
     */