/* Takes optional arguments, consult optargs_bitmask. */
int
do_mkfs_opts (const char *fstype, const char *device, int blocksize,
const char *features, int inode, int sectorsize)
{
const char *argv[MAX_ARGS];
size_t i = 0;
char blocksize_str[32];
char inode_str[32];
char sectorsize_str[32];
int r;
char *err;
char mke2fs[] = "mke2fs";
int extfs = 0;
if (STREQ (fstype, "ext2") || STREQ (fstype, "ext3") ||
STREQ (fstype, "ext4"))
extfs = 1;
/* For ext2/3/4 run the mke2fs program directly. This is because
* the mkfs program "eats" some options, in particular the -F
* option.
*/
if (extfs) {
if (e2prog (mke2fs) == -1)
return -1;
ADD_ARG (argv, i, mke2fs);
}
else
ADD_ARG (argv, i, "mkfs");
ADD_ARG (argv, i, "-t");
ADD_ARG (argv, i, fstype);
/* Force mke2fs to create a filesystem, even if it thinks it
* shouldn't (RHBZ#690819).
*/
if (extfs)
ADD_ARG (argv, i, "-F");
/* mkfs.ntfs requires the -Q argument otherwise it writes zeroes
* to every block and does bad block detection, neither of which
* are useful behaviour for virtual devices.
*/
if (STREQ (fstype, "ntfs"))
ADD_ARG (argv, i, "-Q");
/* mkfs.reiserfs produces annoying interactive prompts unless you
* tell it to be quiet.
* mkfs.jfs is the same
* mkfs.xfs must force to make xfs filesystem when the device already
* has a filesystem on it
*/
if (STREQ (fstype, "reiserfs") || STREQ (fstype, "jfs") ||
STREQ (fstype, "xfs"))
ADD_ARG(argv, i, "-f");
/* For GFS, GFS2, assume a single node. */
if (STREQ (fstype, "gfs") || STREQ (fstype, "gfs2")) {
ADD_ARG (argv, i, "-p");
ADD_ARG (argv, i, "lock_nolock");
/* The man page says this is default, but it doesn't seem to be: */
ADD_ARG (argv, i, "-j");
ADD_ARG (argv, i, "1");
/* Don't ask questions: */
ADD_ARG (argv, i, "-O");
}
/* Process blocksize parameter if set. */
if (optargs_bitmask & GUESTFS_MKFS_OPTS_BLOCKSIZE_BITMASK) {
if (blocksize <= 0 || !is_power_of_2 (blocksize)) {
reply_with_error ("block size must be > 0 and a power of 2");
return -1;
}
if (STREQ (fstype, "vfat") ||
STREQ (fstype, "msdos")) {
/* For VFAT map the blocksize into a cluster size. However we
* have to determine the block device sector size in order to do
* this.
*/
int sectorsize = do_blockdev_getss (device);
if (sectorsize == -1)
return -1;
int sectors_per_cluster = blocksize / sectorsize;
if (sectors_per_cluster < 1 || sectors_per_cluster > 128) {
reply_with_error ("unsupported cluster size for %s filesystem (requested cluster size = %d, sector size = %d, trying sectors per cluster = %d)",
fstype, blocksize, sectorsize, sectors_per_cluster);
return -1;
}
snprintf (blocksize_str, sizeof blocksize_str, "%d", sectors_per_cluster);
ADD_ARG (argv, i, "-s");
ADD_ARG (argv, i, blocksize_str);
}
else if (STREQ (fstype, "ntfs")) {
/* For NTFS map the blocksize into a cluster size. */
snprintf (blocksize_str, sizeof blocksize_str, "%d", blocksize);
ADD_ARG (argv, i, "-c");
ADD_ARG (argv, i, blocksize_str);
}
else {
/* For all other filesystem types, try the -b option. */
snprintf (blocksize_str, sizeof blocksize_str, "%d", blocksize);
ADD_ARG (argv, i, "-b");
ADD_ARG (argv, i, blocksize_str);
}
}
if (optargs_bitmask & GUESTFS_MKFS_OPTS_FEATURES_BITMASK) {
ADD_ARG (argv, i, "-O");
ADD_ARG (argv, i, features);
}
if (optargs_bitmask & GUESTFS_MKFS_OPTS_INODE_BITMASK) {
if (!extfs) {
reply_with_error ("inode size (-I) can only be set on ext2/3/4 filesystems");
return -1;
}
if (inode <= 0) {
reply_with_error ("inode size must be larger than zero");
return -1;
}
snprintf (inode_str, sizeof inode_str, "%d", inode);
ADD_ARG (argv, i, "-I");
ADD_ARG (argv, i, inode_str);
}
if (optargs_bitmask & GUESTFS_MKFS_OPTS_SECTORSIZE_BITMASK) {
if (!STREQ (fstype, "ufs")) {
reply_with_error ("sector size (-S) can only be set on ufs filesystems");
return -1;
}
if (sectorsize <= 0) {
reply_with_error ("sector size must be larger than zero");
return -1;
}
snprintf (sectorsize_str, sizeof sectorsize_str, "%d", sectorsize);
ADD_ARG (argv, i, "-S");
ADD_ARG (argv, i, sectorsize_str);
}
ADD_ARG (argv, i, device);
ADD_ARG (argv, i, NULL);
r = commandv (NULL, &err, argv);
if (r == -1) {
reply_with_error ("%s: %s: %s", fstype, device, err);
free (err);
return -1;
}
free (err);
return 0;
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_mkfs (const char *fstype, const char *device, int blocksize,
const char *features, int inode, int sectorsize, const char *label)
{
const char *argv[MAX_ARGS];
size_t i = 0;
char blocksize_str[32];
char inode_str[32];
char sectorsize_str[32];
int r;
CLEANUP_FREE char *err = NULL;
int extfs = 0;
if (fstype_is_extfs (fstype))
extfs = 1;
/* For ext2/3/4 run the mke2fs program directly. This is because
* the mkfs program "eats" some options, in particular the -F
* option.
*/
if (extfs)
ADD_ARG (argv, i, str_mke2fs);
else
ADD_ARG (argv, i, str_mkfs);
ADD_ARG (argv, i, "-t");
ADD_ARG (argv, i, fstype);
/* Force mke2fs to create a filesystem, even if it thinks it
* shouldn't (RHBZ#690819).
*/
if (extfs)
ADD_ARG (argv, i, "-F");
/* mkfs.ntfs requires the -Q argument otherwise it writes zeroes to
* every block and does bad block detection, neither of which are
* useful behaviour for virtual devices. Also recent versions need
* to be forced to create filesystems on non-partitions.
*/
if (STREQ (fstype, "ntfs")) {
ADD_ARG (argv, i, "-Q");
ADD_ARG (argv, i, "-F");
}
/* mkfs.reiserfs produces annoying interactive prompts unless you
* tell it to be quiet.
* mkfs.jfs is the same
* mkfs.xfs must force to make xfs filesystem when the device already
* has a filesystem on it
*/
if (STREQ (fstype, "reiserfs") || STREQ (fstype, "jfs") ||
STREQ (fstype, "xfs"))
ADD_ARG (argv, i, "-f");
/* For GFS, GFS2, assume a single node. */
if (STREQ (fstype, "gfs") || STREQ (fstype, "gfs2")) {
ADD_ARG (argv, i, "-p");
ADD_ARG (argv, i, "lock_nolock");
/* The man page says this is default, but it doesn't seem to be: */
ADD_ARG (argv, i, "-j");
ADD_ARG (argv, i, "1");
/* Don't ask questions: */
ADD_ARG (argv, i, "-O");
}
/* Force mkfs.fat to create a whole disk filesystem (RHBZ#1039995). */
if (STREQ (fstype, "fat") || STREQ (fstype, "vfat") ||
STREQ (fstype, "msdos"))
ADD_ARG (argv, i, "-I");
/* Process blocksize parameter if set. */
if (optargs_bitmask & GUESTFS_MKFS_BLOCKSIZE_BITMASK) {
if (blocksize <= 0 || !is_power_of_2 (blocksize)) {
reply_with_error ("block size must be > 0 and a power of 2");
return -1;
}
if (STREQ (fstype, "vfat") ||
STREQ (fstype, "msdos")) {
/* For VFAT map the blocksize into a cluster size. However we
* have to determine the block device sector size in order to do
* this.
*/
int ss = do_blockdev_getss (device);
if (ss == -1)
return -1;
int sectors_per_cluster = blocksize / ss;
if (sectors_per_cluster < 1 || sectors_per_cluster > 128) {
reply_with_error ("unsupported cluster size for %s filesystem (requested cluster size = %d, sector size = %d, trying sectors per cluster = %d)",
fstype, blocksize, ss, sectors_per_cluster);
return -1;
}
snprintf (blocksize_str, sizeof blocksize_str, "%d", sectors_per_cluster);
ADD_ARG (argv, i, "-s");
ADD_ARG (argv, i, blocksize_str);
}
else if (STREQ (fstype, "ntfs")) {
/* For NTFS map the blocksize into a cluster size. */
snprintf (blocksize_str, sizeof blocksize_str, "%d", blocksize);
ADD_ARG (argv, i, "-c");
ADD_ARG (argv, i, blocksize_str);
}
else if (STREQ (fstype, "btrfs")) {
/* For btrfs, blocksize cannot be specified (RHBZ#807905). */
reply_with_error ("blocksize cannot be set on btrfs filesystems, use 'mkfs-btrfs'");
return -1;
}
else if (STREQ (fstype, "xfs")) {
/* mkfs -t xfs -b size=<size> (RHBZ#981715). */
snprintf (blocksize_str, sizeof blocksize_str, "size=%d", blocksize);
ADD_ARG (argv, i, "-b");
ADD_ARG (argv, i, blocksize_str);
}
else {
/* For all other filesystem types, try the -b option. */
snprintf (blocksize_str, sizeof blocksize_str, "%d", blocksize);
ADD_ARG (argv, i, "-b");
ADD_ARG (argv, i, blocksize_str);
}
}
if (optargs_bitmask & GUESTFS_MKFS_FEATURES_BITMASK) {
ADD_ARG (argv, i, "-O");
ADD_ARG (argv, i, features);
}
if (optargs_bitmask & GUESTFS_MKFS_INODE_BITMASK) {
if (!extfs) {
reply_with_error ("inode size (-I) can only be set on ext2/3/4 filesystems");
return -1;
}
if (inode <= 0) {
reply_with_error ("inode size must be larger than zero");
return -1;
}
snprintf (inode_str, sizeof inode_str, "%d", inode);
ADD_ARG (argv, i, "-I");
ADD_ARG (argv, i, inode_str);
}
if (optargs_bitmask & GUESTFS_MKFS_SECTORSIZE_BITMASK) {
if (!STREQ (fstype, "ufs")) {
reply_with_error ("sector size (-S) can only be set on ufs filesystems");
return -1;
}
if (sectorsize <= 0) {
reply_with_error ("sector size must be larger than zero");
return -1;
}
snprintf (sectorsize_str, sizeof sectorsize_str, "%d", sectorsize);
ADD_ARG (argv, i, "-S");
ADD_ARG (argv, i, sectorsize_str);
}
if (optargs_bitmask & GUESTFS_MKFS_LABEL_BITMASK) {
if (extfs) {
if (strlen (label) > EXT2_LABEL_MAX) {
reply_with_error ("%s: ext2/3/4 labels are limited to %d bytes",
label, EXT2_LABEL_MAX);
return -1;
}
ADD_ARG (argv, i, "-L");
ADD_ARG (argv, i, label);
}
else if (STREQ (fstype, "fat") || STREQ (fstype, "vfat") ||
STREQ (fstype, "msdos")) {
ADD_ARG (argv, i, "-n");
ADD_ARG (argv, i, label);
}
else if (STREQ (fstype, "ntfs")) {
ADD_ARG (argv, i, "-L");
ADD_ARG (argv, i, label);
}
else if (STREQ (fstype, "xfs")) {
if (strlen (label) > XFS_LABEL_MAX) {
reply_with_error ("%s: xfs labels are limited to %d bytes",
label, XFS_LABEL_MAX);
return -1;
}
ADD_ARG (argv, i, "-L");
ADD_ARG (argv, i, label);
}
else if (STREQ (fstype, "btrfs")) {
ADD_ARG (argv, i, "-L");
ADD_ARG (argv, i, label);
}
else {
reply_with_error ("don't know how to set the label for '%s' filesystems",
fstype);
return -1;
}
}
ADD_ARG (argv, i, device);
ADD_ARG (argv, i, NULL);
wipe_device_before_mkfs (device);
r = commandv (NULL, &err, argv);
if (r == -1) {
reply_with_error ("%s: %s: %s", fstype, device, err);
return -1;
}
return 0;
}