/* Given a partition (eg. /dev/sda2) then return the partition number
* (eg. 2) and the total number of other partitions.
*/
static int
get_partition_context (guestfs_h *g, const char *partition,
int *partnum_ret, int *nr_partitions_ret)
{
int partnum, nr_partitions;
CLEANUP_FREE char *device = NULL;
CLEANUP_FREE_PARTITION_LIST struct guestfs_partition_list *partitions = NULL;
partnum = guestfs_part_to_partnum (g, partition);
if (partnum == -1)
return -1;
device = guestfs_part_to_dev (g, partition);
if (device == NULL)
return -1;
partitions = guestfs_part_list (g, device);
if (partitions == NULL)
return -1;
nr_partitions = partitions->len;
*partnum_ret = partnum;
*nr_partitions_ret = nr_partitions;
return 0;
}
/* Matches Windows registry HKLM\SYSYTEM\MountedDevices\DosDevices blob to
* to libguestfs GPT partition device. For GPT disks, the blob is made of
* "DMIO:ID:" prefix followed by the GPT partition GUID.
*/
static char *
map_registry_disk_blob_gpt (guestfs_h *g, const void *blob)
{
CLEANUP_FREE_STRING_LIST char **parts = NULL;
CLEANUP_FREE char *blob_guid = extract_guid_from_registry_blob (g, blob);
size_t i;
parts = guestfs_list_partitions (g);
if (parts == NULL)
return NULL;
for (i = 0; parts[i] != NULL; ++i) {
CLEANUP_FREE char *fs_guid = NULL;
int partnum;
CLEANUP_FREE char *device = NULL;
CLEANUP_FREE char *type = NULL;
partnum = guestfs_part_to_partnum (g, parts[i]);
if (partnum == -1)
continue;
device = guestfs_part_to_dev (g, parts[i]);
if (device == NULL)
continue;
type = guestfs_part_get_parttype (g, device);
if (type == NULL)
continue;
if (STRCASENEQ (type, "gpt"))
continue;
/* get the GPT parition GUID from the partition block device */
fs_guid = guestfs_part_get_gpt_guid (g, device, partnum);
if (fs_guid == NULL)
continue;
/* if both GUIDs match, we have found the mapping for our device */
if (STRCASEEQ (fs_guid, blob_guid))
return safe_strdup (g, parts[i]);
}
return NULL;
}
static int
get_mbr_id (const char *dev, const char *parent_name)
{
CLEANUP_FREE char *parttype = NULL;
int mbr_id = -1, partnum;
guestfs_push_error_handler (g, NULL, NULL);
parttype = guestfs_part_get_parttype (g, parent_name);
if (parttype && STREQ (parttype, "msdos")) {
partnum = guestfs_part_to_partnum (g, dev);
if (partnum >= 0)
mbr_id = guestfs_part_get_mbr_id (g, parent_name, partnum);
}
guestfs_pop_error_handler (g);
return mbr_id;
}
static int
check_filesystem (guestfs_h *g, const char *mountable,
const struct guestfs_internal_mountable *m,
int whole_device)
{
/* Not CLEANUP_FREE, as it will be cleaned up with inspection info */
char *windows_systemroot = NULL;
if (extend_fses (g) == -1)
return -1;
int partnum = -1;
if (!whole_device && m->im_type == MOUNTABLE_DEVICE) {
guestfs_push_error_handler (g, NULL, NULL);
partnum = guestfs_part_to_partnum (g, m->im_device);
guestfs_pop_error_handler (g);
}
struct inspect_fs *fs = &g->fses[g->nr_fses-1];
fs->mountable = safe_strdup (g, mountable);
/* Optimize some of the tests by avoiding multiple tests of the same thing. */
int is_dir_etc = guestfs_is_dir (g, "/etc") > 0;
int is_dir_bin = guestfs_is_dir (g, "/bin") > 0;
int is_dir_share = guestfs_is_dir (g, "/share") > 0;
/* Grub /boot? */
if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
guestfs_is_file (g, "/grub/grub.conf") > 0 ||
guestfs_is_file (g, "/grub2/grub.cfg") > 0)
;
/* FreeBSD root? */
else if (is_dir_etc &&
is_dir_bin &&
guestfs_is_file (g, "/etc/freebsd-update.conf") > 0 &&
guestfs_is_file (g, "/etc/fstab") > 0) {
/* Ignore /dev/sda1 which is a shadow of the real root filesystem
* that is probably /dev/sda5 (see:
* http://www.freebsd.org/doc/handbook/disk-organization.html)
*/
if (m->im_type == MOUNTABLE_DEVICE &&
match (g, m->im_device, re_first_partition))
return 0;
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLED;
if (guestfs___check_freebsd_root (g, fs) == -1)
return -1;
}
else if (is_dir_etc &&
is_dir_bin &&
guestfs_is_file (g, "/etc/fstab") > 0 &&
guestfs_is_file (g, "/etc/release") > 0) {
/* Ignore /dev/sda1 which is a shadow of the real root filesystem
* that is probably /dev/sda5 (see:
* http://www.freebsd.org/doc/handbook/disk-organization.html)
*/
if (m->im_type == MOUNTABLE_DEVICE &&
match (g, m->im_device, re_first_partition))
return 0;
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLED;
if (guestfs___check_netbsd_root (g, fs) == -1)
return -1;
}
/* Hurd root? */
else if (guestfs_is_file (g, "/hurd/console") > 0 &&
guestfs_is_file (g, "/hurd/hello") > 0 &&
guestfs_is_file (g, "/hurd/null") > 0) {
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLED; /* XXX could be more specific */
if (guestfs___check_hurd_root (g, fs) == -1)
return -1;
}
/* Linux root? */
else if (is_dir_etc &&
(is_dir_bin ||
(guestfs_is_symlink (g, "/bin") > 0 &&
guestfs_is_dir (g, "/usr/bin") > 0)) &&
guestfs_is_file (g, "/etc/fstab") > 0) {
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLED;
if (guestfs___check_linux_root (g, fs) == -1)
return -1;
}
/* Linux /usr/local? */
else if (is_dir_etc &&
is_dir_bin &&
is_dir_share &&
guestfs_is_dir (g, "/local") == 0 &&
guestfs_is_file (g, "/etc/fstab") == 0)
;
/* Linux /usr? */
else if (is_dir_etc &&
is_dir_bin &&
is_dir_share &&
guestfs_is_dir (g, "/local") > 0 &&
guestfs_is_file (g, "/etc/fstab") == 0)
;
/* Linux /var? */
else if (guestfs_is_dir (g, "/log") > 0 &&
guestfs_is_dir (g, "/run") > 0 &&
guestfs_is_dir (g, "/spool") > 0)
;
/* Windows root? */
else if ((windows_systemroot = guestfs___get_windows_systemroot (g)) != NULL)
{
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLED;
if (guestfs___check_windows_root (g, fs, windows_systemroot) == -1)
return -1;
}
/* Windows volume with installed applications (but not root)? */
else if (guestfs___is_dir_nocase (g, "/System Volume Information") > 0 &&
guestfs___is_dir_nocase (g, "/Program Files") > 0)
;
/* Windows volume (but not root)? */
else if (guestfs___is_dir_nocase (g, "/System Volume Information") > 0)
;
/* FreeDOS? */
else if (guestfs___is_dir_nocase (g, "/FDOS") > 0 &&
guestfs___is_file_nocase (g, "/FDOS/FREEDOS.BSS") > 0) {
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLED;
fs->type = OS_TYPE_DOS;
fs->distro = OS_DISTRO_FREEDOS;
/* FreeDOS is a mix of 16 and 32 bit, but assume it requires a
* 32 bit i386 processor.
*/
fs->arch = safe_strdup (g, "i386");
}
/* Install CD/disk?
*
* Note that we checked (above) for an install ISO, but there are
* other types of install image (eg. USB keys) which that check
* wouldn't have picked up.
*
* Skip these checks if it's not a whole device (eg. CD) or the
* first partition (eg. bootable USB key).
*/
else if ((whole_device || partnum == 1) &&
(guestfs_is_file (g, "/isolinux/isolinux.cfg") > 0 ||
guestfs_is_dir (g, "/EFI/BOOT") > 0 ||
guestfs_is_file (g, "/images/install.img") > 0 ||
guestfs_is_dir (g, "/.disk") > 0 ||
guestfs_is_file (g, "/.discinfo") > 0 ||
guestfs_is_file (g, "/i386/txtsetup.sif") > 0 ||
guestfs_is_file (g, "/amd64/txtsetup.sif") > 0 ||
guestfs_is_file (g, "/freedos/freedos.ico") > 0 ||
guestfs_is_file (g, "/boot/loader.rc") > 0)) {
fs->is_root = 1;
fs->format = OS_FORMAT_INSTALLER;
if (guestfs___check_installer_root (g, fs) == -1)
return -1;
}
/* The above code should have set fs->type and fs->distro fields, so
* we can now guess the package management system.
*/
guestfs___check_package_format (g, fs);
guestfs___check_package_management (g, fs);
return 0;
}
