static void
output_mountpoints (xmlTextWriterPtr xo, char *root)
{
size_t i;
CLEANUP_FREE_STRING_LIST char **mountpoints =
guestfs_inspect_get_mountpoints (g, root);
if (mountpoints == NULL)
exit (EXIT_FAILURE);
/* Sort by key length, shortest key first, and then name, so the
* output is stable.
*/
qsort (mountpoints, guestfs_int_count_strings (mountpoints) / 2,
2 * sizeof (char *),
compare_keys_len);
XMLERROR (-1, xmlTextWriterStartElement (xo, BAD_CAST "mountpoints"));
for (i = 0; mountpoints[i] != NULL; i += 2) {
CLEANUP_FREE char *p = guestfs_canonical_device_name (g, mountpoints[i+1]);
if (!p)
exit (EXIT_FAILURE);
XMLERROR (-1,
xmlTextWriterStartElement (xo, BAD_CAST "mountpoint"));
XMLERROR (-1,
xmlTextWriterWriteAttribute (xo, BAD_CAST "dev", BAD_CAST p));
XMLERROR (-1,
xmlTextWriterWriteString (xo, BAD_CAST mountpoints[i]));
XMLERROR (-1, xmlTextWriterEndElement (xo));
}
XMLERROR (-1, xmlTextWriterEndElement (xo));
}
/* This function is called only if the above function was called,
* and only after we've printed the prompt in interactive mode.
*/
void
print_inspect_prompt (void)
{
size_t i;
CLEANUP_FREE char *name = NULL;
CLEANUP_FREE_STRING_LIST char **mountpoints;
name = guestfs_inspect_get_product_name (g, root);
if (name && STRNEQ (name, "unknown"))
printf (_("Operating system: %s\n"), name);
mountpoints = guestfs_inspect_get_mountpoints (g, root);
if (mountpoints == NULL)
return;
/* Sort by key. */
qsort (mountpoints, guestfs___count_strings (mountpoints) / 2,
2 * sizeof (char *),
compare_keys);
for (i = 0; mountpoints[i] != NULL; i += 2) {
/* Try to make the device name canonical for printing, but don't
* worry if this fails.
*/
CLEANUP_FREE char *dev =
guestfs_canonical_device_name (g, mountpoints[i+1]);
printf (_("%s mounted on %s\n"),
dev ? dev : mountpoints[i+1], mountpoints[i]);
}
}
/* This function deals with the complexity of adding the domain,
* launching the handle, and mounting up filesystems. See
* 'examples/inspect-vm.c' to understand how this works.
*/
static int
open_guest (guestfs_h *g, const char *dom, int readonly)
{
char **roots, *root, **mountpoints;
size_t i;
/* Use libvirt to find the guest disks and add them to the handle. */
if (guestfs_add_domain (g, dom,
GUESTFS_ADD_DOMAIN_READONLY, readonly,
-1) == -1)
return -1;
if (guestfs_launch (g) == -1)
return -1;
/* Inspect the guest, looking for operating systems. */
roots = guestfs_inspect_os (g);
if (roots == NULL)
return -1;
if (roots[0] == NULL || roots[1] != NULL) {
fprintf (stderr, "copy-over: %s: no operating systems or multiple operating systems found\n", dom);
return -1;
}
root = roots[0];
/* Mount up the filesystems (like 'guestfish -i'). */
mountpoints = guestfs_inspect_get_mountpoints (g, root);
if (mountpoints == NULL)
return -1;
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.
*/
(readonly ? guestfs_mount_ro : guestfs_mount)
(g, mountpoints[i+1], mountpoints[i]);
free (mountpoints[i]);
free (mountpoints[i+1]);
}
free (mountpoints);
free (root);
free (roots);
/* Everything ready, no error. */
return 0;
}
void
inspect_mount_root (const char *root)
{
CLEANUP_FREE_STRING_LIST char **mountpoints =
guestfs_inspect_get_mountpoints (g, root);
if (mountpoints == NULL)
exit (EXIT_FAILURE);
/* Sort by key length, shortest key first, so that we end up
* mounting the filesystems in the correct order.
*/
qsort (mountpoints, guestfs___count_strings (mountpoints) / 2,
2 * sizeof (char *),
compare_keys_len);
size_t i;
size_t mount_errors = 0;
for (i = 0; mountpoints[i] != NULL; i += 2) {
int r;
if (!read_only)
r = guestfs_mount (g, mountpoints[i+1], mountpoints[i]);
else
r = guestfs_mount_ro (g, mountpoints[i+1], mountpoints[i]);
if (r == -1) {
/* If the "/" filesystem could not be mounted, give up, else
* just count the errors and print a warning.
*/
if (STREQ (mountpoints[i], "/"))
exit (EXIT_FAILURE);
mount_errors++;
}
}
if (mount_errors)
fprintf (stderr, _("%s: some filesystems could not be mounted (ignored)\n"),
program_name);
}
int
main (int argc, char *argv[])
{
guestfs_h *g;
const char *disk;
char **roots, *root, *str, **mountpoints, **lines;
size_t i, j;
if (argc != 2) {
fprintf (stderr, "usage: inspect_vm 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, "inspect_vm: no operating systems found\n");
exit (EXIT_FAILURE);
}
for (j = 0; roots[j] != NULL; ++j) {
root = roots[j];
printf ("Root device: %s\n", root);
/* Print basic information about the operating system. */
str = guestfs_inspect_get_product_name (g, root);
if (str)
printf (" Product name: %s\n", str);
free (str);
printf (" Version: %d.%d\n",
guestfs_inspect_get_major_version (g, root),
guestfs_inspect_get_minor_version (g, root));
str = guestfs_inspect_get_type (g, root);
if (str)
printf (" Type: %s\n", str);
free (str);
str = guestfs_inspect_get_distro (g, root);
if (str)
printf (" Distro: %s\n", str);
free (str);
/* 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);
/* If /etc/issue.net file exists, print up to 3 lines. */
if (guestfs_is_file (g, "/etc/issue.net") > 0) {
printf ("--- /etc/issue.net ---\n");
lines = guestfs_head_n (g, 3, "/etc/issue.net");
if (lines == NULL)
exit (EXIT_FAILURE);
for (i = 0; lines[i] != NULL; ++i) {
printf ("%s\n", lines[i]);
free (lines[i]);
}
free (lines);
}
/* Unmount everything. */
if (guestfs_umount_all (g) == -1)
exit (EXIT_FAILURE);
free (root);
}
free (roots);
guestfs_close (g);
exit (EXIT_SUCCESS);
}
