mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-09 16:07:03 +00:00
e4df433b8a
As btrfs is specific to Linux, %m can be used instead of strerror(errno) in format strings. This has some size reduction benefits for embedded systems. glibc, musl, and uclibc-ng all support %m as a modifier to printf. A quick glance at the BIONIC libc source indicates that it has support for %m as well. BSDs and Windows do not but I do believe them to be beyond the scope of btrfs-progs. Compiled sizes on Ubuntu 16.04: Before: 3916512 btrfs 233688 libbtrfs.so.0.1 4899 bcp 2367672 btrfs-convert 2208488 btrfs-corrupt-block 13302 btrfs-debugfs 2152160 btrfs-debug-tree 2136024 btrfs-find-root 2287592 btrfs-image 2144600 btrfs-map-logical 2130760 btrfs-select-super 2152608 btrfstune 2131760 btrfs-zero-log 2277752 mkfs.btrfs 9166 show-blocks After: 3908744 btrfs 233256 libbtrfs.so.0.1 4899 bcp 2366560 btrfs-convert 2207432 btrfs-corrupt-block 13302 btrfs-debugfs 2151104 btrfs-debug-tree 2134968 btrfs-find-root 2281864 btrfs-image 2143536 btrfs-map-logical 2129704 btrfs-select-super 2151552 btrfstune 2130696 btrfs-zero-log 2276272 mkfs.btrfs 9166 show-blocks Total savings: 23928 (24 kilo)bytes Signed-off-by: Rosen Penev <rosenp@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>
1403 lines
32 KiB
C
1403 lines
32 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/vfs.h>
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#include <libgen.h>
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#include <limits.h>
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#include <getopt.h>
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#include <uuid/uuid.h>
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#include <linux/magic.h>
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#include "kerncompat.h"
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#include "ioctl.h"
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#include "qgroup.h"
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#include "ctree.h"
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#include "commands.h"
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#include "utils.h"
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#include "btrfs-list.h"
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#include "utils.h"
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#include "help.h"
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static int is_subvolume_cleaned(int fd, u64 subvolid)
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{
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int ret;
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struct btrfs_ioctl_search_args args;
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struct btrfs_ioctl_search_key *sk = &args.key;
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sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
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sk->min_objectid = subvolid;
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sk->max_objectid = subvolid;
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sk->min_type = BTRFS_ROOT_ITEM_KEY;
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sk->max_type = BTRFS_ROOT_ITEM_KEY;
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sk->min_offset = 0;
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sk->max_offset = (u64)-1;
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sk->min_transid = 0;
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sk->max_transid = (u64)-1;
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sk->nr_items = 1;
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ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
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if (ret < 0)
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return -errno;
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if (sk->nr_items == 0)
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return 1;
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return 0;
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}
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static int wait_for_subvolume_cleaning(int fd, int count, u64 *ids,
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int sleep_interval)
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{
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int ret;
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int i;
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while (1) {
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int clean = 1;
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for (i = 0; i < count; i++) {
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if (!ids[i])
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continue;
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ret = is_subvolume_cleaned(fd, ids[i]);
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if (ret < 0) {
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error(
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"cannot read status of dead subvolume %llu: %s",
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(unsigned long long)ids[i], strerror(-ret));
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return ret;
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}
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if (ret) {
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printf("Subvolume id %llu is gone\n", ids[i]);
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ids[i] = 0;
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} else {
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clean = 0;
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}
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}
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if (clean)
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break;
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sleep(sleep_interval);
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}
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return 0;
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}
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static const char * const subvolume_cmd_group_usage[] = {
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"btrfs subvolume <command> <args>",
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NULL
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};
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static const char * const cmd_subvol_create_usage[] = {
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"btrfs subvolume create [-i <qgroupid>] [<dest>/]<name>",
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"Create a subvolume",
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"Create a subvolume <name> in <dest>. If <dest> is not given",
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"subvolume <name> will be created in the current directory.",
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"",
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"-i <qgroupid> add the newly created subvolume to a qgroup. This",
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" option can be given multiple times.",
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NULL
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};
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static int cmd_subvol_create(int argc, char **argv)
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{
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int retval, res, len;
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int fddst = -1;
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char *dupname = NULL;
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char *dupdir = NULL;
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char *newname;
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char *dstdir;
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char *dst;
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struct btrfs_qgroup_inherit *inherit = NULL;
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DIR *dirstream = NULL;
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while (1) {
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int c = getopt(argc, argv, "c:i:");
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if (c < 0)
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break;
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switch (c) {
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case 'c':
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res = qgroup_inherit_add_copy(&inherit, optarg, 0);
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if (res) {
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retval = res;
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goto out;
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}
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break;
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case 'i':
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res = qgroup_inherit_add_group(&inherit, optarg);
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if (res) {
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retval = res;
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goto out;
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}
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break;
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default:
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usage(cmd_subvol_create_usage);
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}
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}
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if (check_argc_exact(argc - optind, 1))
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usage(cmd_subvol_create_usage);
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dst = argv[optind];
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retval = 1; /* failure */
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res = test_isdir(dst);
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if (res < 0 && res != -ENOENT) {
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error("cannot access %s: %s", dst, strerror(-res));
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goto out;
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}
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if (res >= 0) {
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error("target path already exists: %s", dst);
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goto out;
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}
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dupname = strdup(dst);
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newname = basename(dupname);
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dupdir = strdup(dst);
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dstdir = dirname(dupdir);
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if (!test_issubvolname(newname)) {
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error("invalid subvolume name: %s", newname);
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goto out;
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}
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len = strlen(newname);
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if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
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error("subvolume name too long: %s", newname);
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goto out;
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}
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fddst = btrfs_open_dir(dstdir, &dirstream, 1);
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if (fddst < 0)
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goto out;
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printf("Create subvolume '%s/%s'\n", dstdir, newname);
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if (inherit) {
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struct btrfs_ioctl_vol_args_v2 args;
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memset(&args, 0, sizeof(args));
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strncpy_null(args.name, newname);
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args.flags |= BTRFS_SUBVOL_QGROUP_INHERIT;
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args.size = qgroup_inherit_size(inherit);
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args.qgroup_inherit = inherit;
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res = ioctl(fddst, BTRFS_IOC_SUBVOL_CREATE_V2, &args);
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} else {
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struct btrfs_ioctl_vol_args args;
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memset(&args, 0, sizeof(args));
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strncpy_null(args.name, newname);
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res = ioctl(fddst, BTRFS_IOC_SUBVOL_CREATE, &args);
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}
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if (res < 0) {
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error("cannot create subvolume: %m");
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goto out;
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}
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retval = 0; /* success */
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out:
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close_file_or_dir(fddst, dirstream);
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free(inherit);
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free(dupname);
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free(dupdir);
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return retval;
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}
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static int wait_for_commit(int fd)
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{
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int ret;
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ret = ioctl(fd, BTRFS_IOC_START_SYNC, NULL);
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if (ret < 0)
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return ret;
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return ioctl(fd, BTRFS_IOC_WAIT_SYNC, NULL);
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}
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static const char * const cmd_subvol_delete_usage[] = {
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"btrfs subvolume delete [options] <subvolume> [<subvolume>...]",
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"Delete subvolume(s)",
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"Delete subvolumes from the filesystem. The corresponding directory",
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"is removed instantly but the data blocks are removed later.",
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"The deletion does not involve full commit by default due to",
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"performance reasons (as a consequence, the subvolume may appear again",
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"after a crash). Use one of the --commit options to wait until the",
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"operation is safely stored on the media.",
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"",
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"-c|--commit-after wait for transaction commit at the end of the operation",
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"-C|--commit-each wait for transaction commit after deleting each subvolume",
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"-v|--verbose verbose output of operations",
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NULL
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};
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static int cmd_subvol_delete(int argc, char **argv)
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{
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int res, ret = 0;
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int cnt;
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int fd = -1;
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struct btrfs_ioctl_vol_args args;
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char *dname, *vname, *cpath;
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char *dupdname = NULL;
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char *dupvname = NULL;
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char *path;
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DIR *dirstream = NULL;
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int verbose = 0;
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int commit_mode = 0;
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u8 fsid[BTRFS_FSID_SIZE];
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char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
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struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = { NULL, };
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enum { COMMIT_AFTER = 1, COMMIT_EACH = 2 };
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while (1) {
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int c;
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static const struct option long_options[] = {
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{"commit-after", no_argument, NULL, 'c'},
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{"commit-each", no_argument, NULL, 'C'},
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{"verbose", no_argument, NULL, 'v'},
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{NULL, 0, NULL, 0}
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};
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c = getopt_long(argc, argv, "cCv", long_options, NULL);
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if (c < 0)
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break;
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switch(c) {
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case 'c':
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commit_mode = COMMIT_AFTER;
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break;
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case 'C':
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commit_mode = COMMIT_EACH;
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break;
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case 'v':
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verbose++;
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break;
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default:
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usage(cmd_subvol_delete_usage);
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}
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}
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if (check_argc_min(argc - optind, 1))
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usage(cmd_subvol_delete_usage);
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if (verbose > 0) {
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printf("Transaction commit: %s\n",
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!commit_mode ? "none (default)" :
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commit_mode == COMMIT_AFTER ? "at the end" : "after each");
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}
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cnt = optind;
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again:
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path = argv[cnt];
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res = test_issubvolume(path);
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if (res < 0) {
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error("cannot access subvolume %s: %s", path, strerror(-res));
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ret = 1;
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goto out;
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}
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if (!res) {
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error("not a subvolume: %s", path);
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ret = 1;
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goto out;
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}
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cpath = realpath(path, NULL);
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if (!cpath) {
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ret = errno;
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error("cannot find real path for '%s': %m", path);
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goto out;
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}
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dupdname = strdup(cpath);
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dname = dirname(dupdname);
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dupvname = strdup(cpath);
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vname = basename(dupvname);
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free(cpath);
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fd = btrfs_open_dir(dname, &dirstream, 1);
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if (fd < 0) {
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ret = 1;
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goto out;
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}
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printf("Delete subvolume (%s): '%s/%s'\n",
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commit_mode == COMMIT_EACH || (commit_mode == COMMIT_AFTER && cnt + 1 == argc)
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? "commit" : "no-commit", dname, vname);
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memset(&args, 0, sizeof(args));
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strncpy_null(args.name, vname);
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res = ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &args);
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if(res < 0 ){
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error("cannot delete '%s/%s': %m", dname, vname);
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ret = 1;
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goto out;
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}
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if (commit_mode == COMMIT_EACH) {
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res = wait_for_commit(fd);
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if (res < 0) {
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error("unable to wait for commit after '%s': %m", path);
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ret = 1;
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}
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} else if (commit_mode == COMMIT_AFTER) {
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res = get_fsid(dname, fsid, 0);
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if (res < 0) {
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error("unable to get fsid for '%s': %s",
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path, strerror(-res));
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error(
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"delete suceeded but commit may not be done in the end");
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ret = 1;
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goto out;
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}
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if (add_seen_fsid(fsid, seen_fsid_hash, fd, dirstream) == 0) {
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if (verbose > 0) {
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uuid_unparse(fsid, uuidbuf);
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printf(" new fs is found for '%s', fsid: %s\n",
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path, uuidbuf);
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}
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/*
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* This is the first time a subvolume on this
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* filesystem is deleted, keep fd in order to issue
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* SYNC ioctl in the end
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*/
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goto keep_fd;
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}
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}
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out:
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close_file_or_dir(fd, dirstream);
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keep_fd:
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fd = -1;
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dirstream = NULL;
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free(dupdname);
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free(dupvname);
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dupdname = NULL;
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dupvname = NULL;
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cnt++;
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if (cnt < argc)
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goto again;
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if (commit_mode == COMMIT_AFTER) {
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int slot;
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/*
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* Traverse seen_fsid_hash and issue SYNC ioctl on each
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* filesystem
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*/
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for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
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struct seen_fsid *seen = seen_fsid_hash[slot];
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while (seen) {
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res = wait_for_commit(seen->fd);
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if (res < 0) {
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uuid_unparse(seen->fsid, uuidbuf);
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error(
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"unable to do final sync after deletion: %m, fsid: %s",
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uuidbuf);
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ret = 1;
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} else if (verbose > 0) {
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uuid_unparse(seen->fsid, uuidbuf);
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printf("final sync is done for fsid: %s\n",
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uuidbuf);
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}
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seen = seen->next;
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}
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}
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/* fd will also be closed in free_seen_fsid */
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free_seen_fsid(seen_fsid_hash);
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}
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return ret;
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}
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|
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/*
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* Naming of options:
|
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* - uppercase for filters and sort options
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* - lowercase for enabling specific items in the output
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*/
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static const char * const cmd_subvol_list_usage[] = {
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"btrfs subvolume list [options] <path>",
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"List subvolumes and snapshots in the filesystem.",
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"",
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"Path filtering:",
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"-o print only subvolumes below specified path",
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"-a print all the subvolumes in the filesystem and",
|
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" distinguish absolute and relative path with respect",
|
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" to the given <path>",
|
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"",
|
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"Field selection:",
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"-p print parent ID",
|
|
"-c print the ogeneration of the subvolume",
|
|
"-g print the generation of the subvolume",
|
|
"-u print the uuid of subvolumes (and snapshots)",
|
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"-q print the parent uuid of the snapshots",
|
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"-R print the uuid of the received snapshots",
|
|
"",
|
|
"Type filtering:",
|
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"-s list only snapshots",
|
|
"-r list readonly subvolumes (including snapshots)",
|
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"-d list deleted subvolumes that are not yet cleaned",
|
|
"",
|
|
"Other:",
|
|
"-t print the result as a table",
|
|
"",
|
|
"Sorting:",
|
|
"-G [+|-]value",
|
|
" filter the subvolumes by generation",
|
|
" (+value: >= value; -value: <= value; value: = value)",
|
|
"-C [+|-]value",
|
|
" filter the subvolumes by ogeneration",
|
|
" (+value: >= value; -value: <= value; value: = value)",
|
|
"--sort=gen,ogen,rootid,path",
|
|
" list the subvolume in order of gen, ogen, rootid or path",
|
|
" you also can add '+' or '-' in front of each items.",
|
|
" (+:ascending, -:descending, ascending default)",
|
|
NULL,
|
|
};
|
|
|
|
static int cmd_subvol_list(int argc, char **argv)
|
|
{
|
|
struct btrfs_list_filter_set *filter_set;
|
|
struct btrfs_list_comparer_set *comparer_set;
|
|
u64 flags = 0;
|
|
int fd = -1;
|
|
u64 top_id;
|
|
int ret = -1, uerr = 0;
|
|
char *subvol;
|
|
int is_list_all = 0;
|
|
int is_only_in_path = 0;
|
|
DIR *dirstream = NULL;
|
|
enum btrfs_list_layout layout = BTRFS_LIST_LAYOUT_DEFAULT;
|
|
|
|
filter_set = btrfs_list_alloc_filter_set();
|
|
comparer_set = btrfs_list_alloc_comparer_set();
|
|
|
|
while(1) {
|
|
int c;
|
|
static const struct option long_options[] = {
|
|
{"sort", required_argument, NULL, 'S'},
|
|
{NULL, 0, NULL, 0}
|
|
};
|
|
|
|
c = getopt_long(argc, argv,
|
|
"acdgopqsurRG:C:t", long_options, NULL);
|
|
if (c < 0)
|
|
break;
|
|
|
|
switch(c) {
|
|
case 'p':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_PARENT);
|
|
break;
|
|
case 'a':
|
|
is_list_all = 1;
|
|
break;
|
|
case 'c':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
|
|
break;
|
|
case 'd':
|
|
btrfs_list_setup_filter(&filter_set,
|
|
BTRFS_LIST_FILTER_DELETED,
|
|
0);
|
|
break;
|
|
case 'g':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
|
|
break;
|
|
case 'o':
|
|
is_only_in_path = 1;
|
|
break;
|
|
case 't':
|
|
layout = BTRFS_LIST_LAYOUT_TABLE;
|
|
break;
|
|
case 's':
|
|
btrfs_list_setup_filter(&filter_set,
|
|
BTRFS_LIST_FILTER_SNAPSHOT_ONLY,
|
|
0);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_OTIME);
|
|
break;
|
|
case 'u':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_UUID);
|
|
break;
|
|
case 'q':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_PUUID);
|
|
break;
|
|
case 'R':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_RUUID);
|
|
break;
|
|
case 'r':
|
|
flags |= BTRFS_ROOT_SUBVOL_RDONLY;
|
|
break;
|
|
case 'G':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
|
|
ret = btrfs_list_parse_filter_string(optarg,
|
|
&filter_set,
|
|
BTRFS_LIST_FILTER_GEN);
|
|
if (ret) {
|
|
uerr = 1;
|
|
goto out;
|
|
}
|
|
break;
|
|
|
|
case 'C':
|
|
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
|
|
ret = btrfs_list_parse_filter_string(optarg,
|
|
&filter_set,
|
|
BTRFS_LIST_FILTER_CGEN);
|
|
if (ret) {
|
|
uerr = 1;
|
|
goto out;
|
|
}
|
|
break;
|
|
case 'S':
|
|
ret = btrfs_list_parse_sort_string(optarg,
|
|
&comparer_set);
|
|
if (ret) {
|
|
uerr = 1;
|
|
goto out;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
uerr = 1;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (check_argc_exact(argc - optind, 1)) {
|
|
uerr = 1;
|
|
goto out;
|
|
}
|
|
|
|
subvol = argv[optind];
|
|
fd = btrfs_open_dir(subvol, &dirstream, 1);
|
|
if (fd < 0) {
|
|
ret = -1;
|
|
error("can't access '%s'", subvol);
|
|
goto out;
|
|
}
|
|
|
|
if (flags)
|
|
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_FLAGS,
|
|
flags);
|
|
|
|
ret = btrfs_list_get_path_rootid(fd, &top_id);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (is_list_all)
|
|
btrfs_list_setup_filter(&filter_set,
|
|
BTRFS_LIST_FILTER_FULL_PATH,
|
|
top_id);
|
|
else if (is_only_in_path)
|
|
btrfs_list_setup_filter(&filter_set,
|
|
BTRFS_LIST_FILTER_TOPID_EQUAL,
|
|
top_id);
|
|
|
|
/* by default we shall print the following columns*/
|
|
btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
|
|
|
|
ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
|
|
layout, !is_list_all && !is_only_in_path, NULL);
|
|
|
|
out:
|
|
close_file_or_dir(fd, dirstream);
|
|
if (filter_set)
|
|
free(filter_set);
|
|
if (comparer_set)
|
|
free(comparer_set);
|
|
if (uerr)
|
|
usage(cmd_subvol_list_usage);
|
|
return !!ret;
|
|
}
|
|
|
|
static const char * const cmd_subvol_snapshot_usage[] = {
|
|
"btrfs subvolume snapshot [-r] [-i <qgroupid>] <source> <dest>|[<dest>/]<name>",
|
|
"Create a snapshot of the subvolume",
|
|
"Create a writable/readonly snapshot of the subvolume <source> with",
|
|
"the name <name> in the <dest> directory. If only <dest> is given,",
|
|
"the subvolume will be named the basename of <source>.",
|
|
"",
|
|
"-r create a readonly snapshot",
|
|
"-i <qgroupid> add the newly created snapshot to a qgroup. This",
|
|
" option can be given multiple times.",
|
|
NULL
|
|
};
|
|
|
|
static int cmd_subvol_snapshot(int argc, char **argv)
|
|
{
|
|
char *subvol, *dst;
|
|
int res, retval;
|
|
int fd = -1, fddst = -1;
|
|
int len, readonly = 0;
|
|
char *dupname = NULL;
|
|
char *dupdir = NULL;
|
|
char *newname;
|
|
char *dstdir;
|
|
struct btrfs_ioctl_vol_args_v2 args;
|
|
struct btrfs_qgroup_inherit *inherit = NULL;
|
|
DIR *dirstream1 = NULL, *dirstream2 = NULL;
|
|
|
|
memset(&args, 0, sizeof(args));
|
|
while (1) {
|
|
int c = getopt(argc, argv, "c:i:r");
|
|
if (c < 0)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'c':
|
|
res = qgroup_inherit_add_copy(&inherit, optarg, 0);
|
|
if (res) {
|
|
retval = res;
|
|
goto out;
|
|
}
|
|
break;
|
|
case 'i':
|
|
res = qgroup_inherit_add_group(&inherit, optarg);
|
|
if (res) {
|
|
retval = res;
|
|
goto out;
|
|
}
|
|
break;
|
|
case 'r':
|
|
readonly = 1;
|
|
break;
|
|
case 'x':
|
|
res = qgroup_inherit_add_copy(&inherit, optarg, 1);
|
|
if (res) {
|
|
retval = res;
|
|
goto out;
|
|
}
|
|
break;
|
|
default:
|
|
usage(cmd_subvol_snapshot_usage);
|
|
}
|
|
}
|
|
|
|
if (check_argc_exact(argc - optind, 2))
|
|
usage(cmd_subvol_snapshot_usage);
|
|
|
|
subvol = argv[optind];
|
|
dst = argv[optind + 1];
|
|
|
|
retval = 1; /* failure */
|
|
res = test_issubvolume(subvol);
|
|
if (res < 0) {
|
|
error("cannot access subvolume %s: %s", subvol, strerror(-res));
|
|
goto out;
|
|
}
|
|
if (!res) {
|
|
error("not a subvolume: %s", subvol);
|
|
goto out;
|
|
}
|
|
|
|
res = test_isdir(dst);
|
|
if (res < 0 && res != -ENOENT) {
|
|
error("cannot access %s: %s", dst, strerror(-res));
|
|
goto out;
|
|
}
|
|
if (res == 0) {
|
|
error("'%s' exists and it is not a directory", dst);
|
|
goto out;
|
|
}
|
|
|
|
if (res > 0) {
|
|
dupname = strdup(subvol);
|
|
newname = basename(dupname);
|
|
dstdir = dst;
|
|
} else {
|
|
dupname = strdup(dst);
|
|
newname = basename(dupname);
|
|
dupdir = strdup(dst);
|
|
dstdir = dirname(dupdir);
|
|
}
|
|
|
|
if (!test_issubvolname(newname)) {
|
|
error("invalid snapshot name '%s'", newname);
|
|
goto out;
|
|
}
|
|
|
|
len = strlen(newname);
|
|
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
|
|
error("snapshot name too long '%s'", newname);
|
|
goto out;
|
|
}
|
|
|
|
fddst = btrfs_open_dir(dstdir, &dirstream1, 1);
|
|
if (fddst < 0)
|
|
goto out;
|
|
|
|
fd = btrfs_open_dir(subvol, &dirstream2, 1);
|
|
if (fd < 0)
|
|
goto out;
|
|
|
|
if (readonly) {
|
|
args.flags |= BTRFS_SUBVOL_RDONLY;
|
|
printf("Create a readonly snapshot of '%s' in '%s/%s'\n",
|
|
subvol, dstdir, newname);
|
|
} else {
|
|
printf("Create a snapshot of '%s' in '%s/%s'\n",
|
|
subvol, dstdir, newname);
|
|
}
|
|
|
|
args.fd = fd;
|
|
if (inherit) {
|
|
args.flags |= BTRFS_SUBVOL_QGROUP_INHERIT;
|
|
args.size = qgroup_inherit_size(inherit);
|
|
args.qgroup_inherit = inherit;
|
|
}
|
|
strncpy_null(args.name, newname);
|
|
|
|
res = ioctl(fddst, BTRFS_IOC_SNAP_CREATE_V2, &args);
|
|
|
|
if (res < 0) {
|
|
error("cannot snapshot '%s': %m", subvol);
|
|
goto out;
|
|
}
|
|
|
|
retval = 0; /* success */
|
|
|
|
out:
|
|
close_file_or_dir(fddst, dirstream1);
|
|
close_file_or_dir(fd, dirstream2);
|
|
free(inherit);
|
|
free(dupname);
|
|
free(dupdir);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static const char * const cmd_subvol_get_default_usage[] = {
|
|
"btrfs subvolume get-default <path>",
|
|
"Get the default subvolume of a filesystem",
|
|
NULL
|
|
};
|
|
|
|
static int cmd_subvol_get_default(int argc, char **argv)
|
|
{
|
|
int fd = -1;
|
|
int ret;
|
|
char *subvol;
|
|
struct btrfs_list_filter_set *filter_set;
|
|
u64 default_id;
|
|
DIR *dirstream = NULL;
|
|
|
|
clean_args_no_options(argc, argv, cmd_subvol_get_default_usage);
|
|
|
|
if (check_argc_exact(argc - optind, 1))
|
|
usage(cmd_subvol_get_default_usage);
|
|
|
|
subvol = argv[1];
|
|
fd = btrfs_open_dir(subvol, &dirstream, 1);
|
|
if (fd < 0)
|
|
return 1;
|
|
|
|
ret = btrfs_list_get_default_subvolume(fd, &default_id);
|
|
if (ret) {
|
|
error("failed to look up default subvolume: %m");
|
|
goto out;
|
|
}
|
|
|
|
ret = 1;
|
|
if (default_id == 0) {
|
|
error("'default' dir item not found");
|
|
goto out;
|
|
}
|
|
|
|
/* no need to resolve roots if FS_TREE is default */
|
|
if (default_id == BTRFS_FS_TREE_OBJECTID) {
|
|
printf("ID 5 (FS_TREE)\n");
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
filter_set = btrfs_list_alloc_filter_set();
|
|
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
|
|
default_id);
|
|
|
|
/* by default we shall print the following columns*/
|
|
btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
|
|
|
|
ret = btrfs_list_subvols_print(fd, filter_set, NULL,
|
|
BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);
|
|
|
|
if (filter_set)
|
|
free(filter_set);
|
|
out:
|
|
close_file_or_dir(fd, dirstream);
|
|
return !!ret;
|
|
}
|
|
|
|
static const char * const cmd_subvol_set_default_usage[] = {
|
|
"btrfs subvolume set-default <subvolume>\n"
|
|
"btrfs subvolume set-default <subvolid> <path>",
|
|
"Set the default subvolume of the filesystem mounted as default.",
|
|
"The subvolume can be specified by its path,",
|
|
"or the pair of subvolume id and path to the filesystem.",
|
|
NULL
|
|
};
|
|
|
|
static int cmd_subvol_set_default(int argc, char **argv)
|
|
{
|
|
int ret=0, fd;
|
|
u64 objectid;
|
|
char *path;
|
|
char *subvolid;
|
|
DIR *dirstream = NULL;
|
|
|
|
clean_args_no_options(argc, argv, cmd_subvol_set_default_usage);
|
|
|
|
if (check_argc_min(argc - optind, 1) ||
|
|
check_argc_max(argc - optind, 2))
|
|
usage(cmd_subvol_set_default_usage);
|
|
|
|
if (argc - optind == 1) {
|
|
/* path to the subvolume is specified */
|
|
path = argv[optind];
|
|
|
|
ret = test_issubvolume(path);
|
|
if (ret < 0) {
|
|
error("stat error: %s", strerror(-ret));
|
|
return 1;
|
|
} else if (!ret) {
|
|
error("'%s' is not a subvolume", path);
|
|
return 1;
|
|
}
|
|
|
|
fd = btrfs_open_dir(path, &dirstream, 1);
|
|
if (fd < 0)
|
|
return 1;
|
|
|
|
ret = lookup_path_rootid(fd, &objectid);
|
|
if (ret) {
|
|
error("unable to get subvol id: %s", strerror(-ret));
|
|
close_file_or_dir(fd, dirstream);
|
|
return 1;
|
|
}
|
|
} else {
|
|
/* subvol id and path to the filesystem are specified */
|
|
subvolid = argv[optind];
|
|
path = argv[optind + 1];
|
|
objectid = arg_strtou64(subvolid);
|
|
|
|
fd = btrfs_open_dir(path, &dirstream, 1);
|
|
if (fd < 0)
|
|
return 1;
|
|
}
|
|
|
|
ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
|
|
close_file_or_dir(fd, dirstream);
|
|
if (ret < 0) {
|
|
error("unable to set a new default subvolume: %m");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const char * const cmd_subvol_find_new_usage[] = {
|
|
"btrfs subvolume find-new <path> <lastgen>",
|
|
"List the recently modified files in a filesystem",
|
|
NULL
|
|
};
|
|
|
|
static int cmd_subvol_find_new(int argc, char **argv)
|
|
{
|
|
int fd;
|
|
int ret;
|
|
char *subvol;
|
|
u64 last_gen;
|
|
DIR *dirstream = NULL;
|
|
|
|
clean_args_no_options(argc, argv, cmd_subvol_find_new_usage);
|
|
|
|
if (check_argc_exact(argc - optind, 2))
|
|
usage(cmd_subvol_find_new_usage);
|
|
|
|
subvol = argv[optind];
|
|
last_gen = arg_strtou64(argv[optind + 1]);
|
|
|
|
ret = test_issubvolume(subvol);
|
|
if (ret < 0) {
|
|
error("cannot access subvolume %s: %s", subvol, strerror(-ret));
|
|
return 1;
|
|
}
|
|
if (!ret) {
|
|
error("not a subvolume: %s", subvol);
|
|
return 1;
|
|
}
|
|
|
|
fd = btrfs_open_dir(subvol, &dirstream, 1);
|
|
if (fd < 0)
|
|
return 1;
|
|
|
|
ret = ioctl(fd, BTRFS_IOC_SYNC);
|
|
if (ret < 0) {
|
|
error("sync ioctl failed on '%s': %m", subvol);
|
|
close_file_or_dir(fd, dirstream);
|
|
return 1;
|
|
}
|
|
|
|
ret = btrfs_list_find_updated_files(fd, 0, last_gen);
|
|
close_file_or_dir(fd, dirstream);
|
|
return !!ret;
|
|
}
|
|
|
|
static const char * const cmd_subvol_show_usage[] = {
|
|
"btrfs subvolume show [options] <subvol-path>|<mnt>",
|
|
"Show more information about the subvolume",
|
|
"-r|--rootid rootid of the subvolume",
|
|
"-u|--uuid uuid of the subvolume",
|
|
"",
|
|
"If no option is specified, <subvol-path> will be shown, otherwise",
|
|
"the rootid or uuid are resolved relative to the <mnt> path.",
|
|
NULL
|
|
};
|
|
|
|
static int cmd_subvol_show(int argc, char **argv)
|
|
{
|
|
struct root_info get_ri;
|
|
struct btrfs_list_filter_set *filter_set = NULL;
|
|
char tstr[256];
|
|
char uuidparse[BTRFS_UUID_UNPARSED_SIZE];
|
|
char *fullpath = NULL;
|
|
char raw_prefix[] = "\t\t\t\t";
|
|
int fd = -1;
|
|
int ret = 1;
|
|
DIR *dirstream1 = NULL;
|
|
int by_rootid = 0;
|
|
int by_uuid = 0;
|
|
u64 rootid_arg;
|
|
u8 uuid_arg[BTRFS_UUID_SIZE];
|
|
|
|
while (1) {
|
|
int c;
|
|
static const struct option long_options[] = {
|
|
{ "rootid", required_argument, NULL, 'r'},
|
|
{ "uuid", required_argument, NULL, 'u'},
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
c = getopt_long(argc, argv, "r:u:", long_options, NULL);
|
|
if (c < 0)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'r':
|
|
rootid_arg = arg_strtou64(optarg);
|
|
by_rootid = 1;
|
|
break;
|
|
case 'u':
|
|
uuid_parse(optarg, uuid_arg);
|
|
by_uuid = 1;
|
|
break;
|
|
default:
|
|
usage(cmd_subvol_show_usage);
|
|
}
|
|
}
|
|
|
|
if (check_argc_exact(argc - optind, 1))
|
|
usage(cmd_subvol_show_usage);
|
|
|
|
if (by_rootid && by_uuid) {
|
|
error(
|
|
"options --rootid and --uuid cannot be used at the same time");
|
|
usage(cmd_subvol_show_usage);
|
|
}
|
|
|
|
memset(&get_ri, 0, sizeof(get_ri));
|
|
fullpath = realpath(argv[optind], NULL);
|
|
if (!fullpath) {
|
|
error("cannot find real path for '%s': %m", argv[optind]);
|
|
goto out;
|
|
}
|
|
|
|
if (by_rootid) {
|
|
ret = get_subvol_info_by_rootid(fullpath, &get_ri, rootid_arg);
|
|
} else if (by_uuid) {
|
|
ret = get_subvol_info_by_uuid(fullpath, &get_ri, uuid_arg);
|
|
} else {
|
|
ret = get_subvol_info(fullpath, &get_ri);
|
|
}
|
|
|
|
if (ret) {
|
|
if (ret < 0) {
|
|
error("Failed to get subvol info %s: %s",
|
|
fullpath, strerror(-ret));
|
|
} else {
|
|
error("Failed to get subvol info %s: %d",
|
|
fullpath, ret);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* print the info */
|
|
printf("%s\n", get_ri.full_path);
|
|
printf("\tName: \t\t\t%s\n", get_ri.name);
|
|
|
|
if (uuid_is_null(get_ri.uuid))
|
|
strcpy(uuidparse, "-");
|
|
else
|
|
uuid_unparse(get_ri.uuid, uuidparse);
|
|
printf("\tUUID: \t\t\t%s\n", uuidparse);
|
|
|
|
if (uuid_is_null(get_ri.puuid))
|
|
strcpy(uuidparse, "-");
|
|
else
|
|
uuid_unparse(get_ri.puuid, uuidparse);
|
|
printf("\tParent UUID: \t\t%s\n", uuidparse);
|
|
|
|
if (uuid_is_null(get_ri.ruuid))
|
|
strcpy(uuidparse, "-");
|
|
else
|
|
uuid_unparse(get_ri.ruuid, uuidparse);
|
|
printf("\tReceived UUID: \t\t%s\n", uuidparse);
|
|
|
|
if (get_ri.otime) {
|
|
struct tm tm;
|
|
|
|
localtime_r(&get_ri.otime, &tm);
|
|
strftime(tstr, 256, "%Y-%m-%d %X %z", &tm);
|
|
} else
|
|
strcpy(tstr, "-");
|
|
printf("\tCreation time: \t\t%s\n", tstr);
|
|
|
|
printf("\tSubvolume ID: \t\t%llu\n", get_ri.root_id);
|
|
printf("\tGeneration: \t\t%llu\n", get_ri.gen);
|
|
printf("\tGen at creation: \t%llu\n", get_ri.ogen);
|
|
printf("\tParent ID: \t\t%llu\n", get_ri.ref_tree);
|
|
printf("\tTop level ID: \t\t%llu\n", get_ri.top_id);
|
|
|
|
if (get_ri.flags & BTRFS_ROOT_SUBVOL_RDONLY)
|
|
printf("\tFlags: \t\t\treadonly\n");
|
|
else
|
|
printf("\tFlags: \t\t\t-\n");
|
|
|
|
/* print the snapshots of the given subvol if any*/
|
|
printf("\tSnapshot(s):\n");
|
|
filter_set = btrfs_list_alloc_filter_set();
|
|
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_BY_PARENT,
|
|
(u64)(unsigned long)get_ri.uuid);
|
|
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
|
|
|
|
fd = open_file_or_dir(fullpath, &dirstream1);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "ERROR: can't access '%s'\n", fullpath);
|
|
goto out;
|
|
}
|
|
btrfs_list_subvols_print(fd, filter_set, NULL, BTRFS_LIST_LAYOUT_RAW,
|
|
1, raw_prefix);
|
|
|
|
out:
|
|
/* clean up */
|
|
free(get_ri.path);
|
|
free(get_ri.name);
|
|
free(get_ri.full_path);
|
|
free(filter_set);
|
|
|
|
close_file_or_dir(fd, dirstream1);
|
|
free(fullpath);
|
|
return !!ret;
|
|
}
|
|
|
|
static const char * const cmd_subvol_sync_usage[] = {
|
|
"btrfs subvolume sync <path> [<subvol-id>...]",
|
|
"Wait until given subvolume(s) are completely removed from the filesystem.",
|
|
"Wait until given subvolume(s) are completely removed from the filesystem",
|
|
"after deletion.",
|
|
"If no subvolume id is given, wait until all current deletion requests",
|
|
"are completed, but do not wait for subvolumes deleted meanwhile.",
|
|
"The status of subvolume ids is checked periodically.",
|
|
"",
|
|
"-s <N> sleep N seconds between checks (default: 1)",
|
|
NULL
|
|
};
|
|
|
|
#if 0
|
|
/*
|
|
* If we're looking for any dead subvolume, take a shortcut and look
|
|
* for any ORPHAN_ITEMs in the tree root
|
|
*/
|
|
static int fs_has_dead_subvolumes(int fd)
|
|
{
|
|
int ret;
|
|
struct btrfs_ioctl_search_args args;
|
|
struct btrfs_ioctl_search_key *sk = &args.key;
|
|
struct btrfs_ioctl_search_header sh;
|
|
u64 min_subvolid = 0;
|
|
|
|
again:
|
|
sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
|
|
sk->min_objectid = BTRFS_ORPHAN_OBJECTID;
|
|
sk->max_objectid = BTRFS_ORPHAN_OBJECTID;
|
|
sk->min_type = BTRFS_ORPHAN_ITEM_KEY;
|
|
sk->max_type = BTRFS_ORPHAN_ITEM_KEY;
|
|
sk->min_offset = min_subvolid;
|
|
sk->max_offset = (u64)-1;
|
|
sk->min_transid = 0;
|
|
sk->max_transid = (u64)-1;
|
|
sk->nr_items = 1;
|
|
|
|
ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
if (!sk->nr_items)
|
|
return 0;
|
|
|
|
memcpy(&sh, args.buf, sizeof(sh));
|
|
min_subvolid = sh.offset;
|
|
|
|
/*
|
|
* Verify that the root item is really there and we haven't hit
|
|
* a stale orphan
|
|
*/
|
|
sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
|
|
sk->min_objectid = min_subvolid;
|
|
sk->max_objectid = min_subvolid;
|
|
sk->min_type = BTRFS_ROOT_ITEM_KEY;
|
|
sk->max_type = BTRFS_ROOT_ITEM_KEY;
|
|
sk->min_offset = 0;
|
|
sk->max_offset = (u64)-1;
|
|
sk->min_transid = 0;
|
|
sk->max_transid = (u64)-1;
|
|
sk->nr_items = 1;
|
|
|
|
ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
/*
|
|
* Stale orphan, try the next one
|
|
*/
|
|
if (!sk->nr_items) {
|
|
min_subvolid++;
|
|
goto again;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
#define SUBVOL_ID_BATCH 1024
|
|
|
|
/*
|
|
* Enumerate all dead subvolumes that exist in the filesystem.
|
|
* Fill @ids and reallocate to bigger size if needed.
|
|
*/
|
|
static int enumerate_dead_subvols(int fd, u64 **ids)
|
|
{
|
|
int ret;
|
|
struct btrfs_ioctl_search_args args;
|
|
struct btrfs_ioctl_search_key *sk = &args.key;
|
|
int idx = 0;
|
|
int count = 0;
|
|
|
|
memset(&args, 0, sizeof(args));
|
|
|
|
sk->tree_id = BTRFS_ROOT_TREE_OBJECTID;
|
|
sk->min_objectid = BTRFS_ORPHAN_OBJECTID;
|
|
sk->max_objectid = BTRFS_ORPHAN_OBJECTID;
|
|
sk->min_type = BTRFS_ORPHAN_ITEM_KEY;
|
|
sk->max_type = BTRFS_ORPHAN_ITEM_KEY;
|
|
sk->min_offset = 0;
|
|
sk->max_offset = (u64)-1;
|
|
sk->min_transid = 0;
|
|
sk->max_transid = (u64)-1;
|
|
sk->nr_items = 4096;
|
|
|
|
*ids = NULL;
|
|
while (1) {
|
|
struct btrfs_ioctl_search_header *sh;
|
|
unsigned long off;
|
|
int i;
|
|
|
|
ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
|
|
if (ret < 0)
|
|
return -errno;
|
|
|
|
if (!sk->nr_items)
|
|
return idx;
|
|
|
|
off = 0;
|
|
for (i = 0; i < sk->nr_items; i++) {
|
|
sh = (struct btrfs_ioctl_search_header*)(args.buf + off);
|
|
off += sizeof(*sh);
|
|
|
|
if (btrfs_search_header_type(sh)
|
|
== BTRFS_ORPHAN_ITEM_KEY) {
|
|
if (idx >= count) {
|
|
u64 *newids;
|
|
|
|
count += SUBVOL_ID_BATCH;
|
|
newids = (u64*)realloc(*ids,
|
|
count * sizeof(u64));
|
|
if (!newids)
|
|
return -ENOMEM;
|
|
*ids = newids;
|
|
}
|
|
(*ids)[idx] = btrfs_search_header_offset(sh);
|
|
idx++;
|
|
}
|
|
off += btrfs_search_header_len(sh);
|
|
|
|
sk->min_objectid = btrfs_search_header_objectid(sh);
|
|
sk->min_type = btrfs_search_header_type(sh);
|
|
sk->min_offset = btrfs_search_header_offset(sh);
|
|
}
|
|
if (sk->min_offset < (u64)-1)
|
|
sk->min_offset++;
|
|
else
|
|
break;
|
|
if (sk->min_type != BTRFS_ORPHAN_ITEM_KEY)
|
|
break;
|
|
if (sk->min_objectid != BTRFS_ORPHAN_OBJECTID)
|
|
break;
|
|
}
|
|
|
|
return idx;
|
|
}
|
|
|
|
static int cmd_subvol_sync(int argc, char **argv)
|
|
{
|
|
int fd = -1;
|
|
int i;
|
|
int ret = 1;
|
|
DIR *dirstream = NULL;
|
|
u64 *ids = NULL;
|
|
int id_count;
|
|
int sleep_interval = 1;
|
|
|
|
while (1) {
|
|
int c = getopt(argc, argv, "s:");
|
|
|
|
if (c < 0)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 's':
|
|
sleep_interval = atoi(optarg);
|
|
if (sleep_interval < 1) {
|
|
error("invalid sleep interval %s", optarg);
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
break;
|
|
default:
|
|
usage(cmd_subvol_sync_usage);
|
|
}
|
|
}
|
|
|
|
if (check_argc_min(argc - optind, 1))
|
|
usage(cmd_subvol_sync_usage);
|
|
|
|
fd = btrfs_open_dir(argv[optind], &dirstream, 1);
|
|
if (fd < 0) {
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
optind++;
|
|
|
|
id_count = argc - optind;
|
|
if (!id_count) {
|
|
id_count = enumerate_dead_subvols(fd, &ids);
|
|
if (id_count < 0) {
|
|
error("can't enumerate dead subvolumes: %s",
|
|
strerror(-id_count));
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
if (id_count == 0) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
} else {
|
|
ids = (u64*)malloc(id_count * sizeof(u64));
|
|
if (!ids) {
|
|
error("not enough memory");
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < id_count; i++) {
|
|
u64 id;
|
|
const char *arg;
|
|
|
|
arg = argv[optind + i];
|
|
errno = 0;
|
|
id = strtoull(arg, NULL, 10);
|
|
if (errno < 0) {
|
|
error("unrecognized subvolume id %s", arg);
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
if (id < BTRFS_FIRST_FREE_OBJECTID
|
|
|| id > BTRFS_LAST_FREE_OBJECTID) {
|
|
error("subvolume id %s out of range", arg);
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
ids[i] = id;
|
|
}
|
|
}
|
|
|
|
ret = wait_for_subvolume_cleaning(fd, id_count, ids, sleep_interval);
|
|
|
|
out:
|
|
free(ids);
|
|
close_file_or_dir(fd, dirstream);
|
|
|
|
return !!ret;
|
|
}
|
|
|
|
static const char subvolume_cmd_group_info[] =
|
|
"manage subvolumes: create, delete, list, etc";
|
|
|
|
const struct cmd_group subvolume_cmd_group = {
|
|
subvolume_cmd_group_usage, subvolume_cmd_group_info, {
|
|
{ "create", cmd_subvol_create, cmd_subvol_create_usage, NULL, 0 },
|
|
{ "delete", cmd_subvol_delete, cmd_subvol_delete_usage, NULL, 0 },
|
|
{ "list", cmd_subvol_list, cmd_subvol_list_usage, NULL, 0 },
|
|
{ "snapshot", cmd_subvol_snapshot, cmd_subvol_snapshot_usage,
|
|
NULL, 0 },
|
|
{ "get-default", cmd_subvol_get_default,
|
|
cmd_subvol_get_default_usage, NULL, 0 },
|
|
{ "set-default", cmd_subvol_set_default,
|
|
cmd_subvol_set_default_usage, NULL, 0 },
|
|
{ "find-new", cmd_subvol_find_new, cmd_subvol_find_new_usage,
|
|
NULL, 0 },
|
|
{ "show", cmd_subvol_show, cmd_subvol_show_usage, NULL, 0 },
|
|
{ "sync", cmd_subvol_sync, cmd_subvol_sync_usage, NULL, 0 },
|
|
NULL_CMD_STRUCT
|
|
}
|
|
};
|
|
|
|
int cmd_subvolume(int argc, char **argv)
|
|
{
|
|
return handle_command_group(&subvolume_cmd_group, argc, argv);
|
|
}
|