2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public
4 * License v2 as published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 * General Public License for more details.
11 * You should have received a copy of the GNU General Public
12 * License along with this program; if not, write to the
13 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
14 * Boston, MA 021110-1307, USA.
17 #define _XOPEN_SOURCE 500
22 #include <sys/ioctl.h>
24 #include <uuid/uuid.h>
29 #include <linux/limits.h>
32 #include "kerncompat.h"
39 #include "cmds-fi-disk_usage.h"
40 #include "list_sort.h"
45 * for btrfs fi show, we maintain a hash of fsids we've already printed.
46 * This way we don't print dups if a given FS is mounted more than once.
48 #define SEEN_FSID_HASH_SIZE 256
51 u8 fsid[BTRFS_FSID_SIZE];
52 struct seen_fsid *next;
55 static struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = {NULL,};
57 static int is_seen_fsid(u8 *fsid)
60 int slot = hash % SEEN_FSID_HASH_SIZE;
61 struct seen_fsid *seen = seen_fsid_hash[slot];
66 static int add_seen_fsid(u8 *fsid)
69 int slot = hash % SEEN_FSID_HASH_SIZE;
70 struct seen_fsid *seen = seen_fsid_hash[slot];
71 struct seen_fsid *alloc;
77 if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
88 alloc = malloc(sizeof(*alloc));
93 memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE);
98 seen_fsid_hash[slot] = alloc;
103 static void free_seen_fsid(void)
106 struct seen_fsid *seen;
107 struct seen_fsid *next;
109 for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
110 seen = seen_fsid_hash[slot];
116 seen_fsid_hash[slot] = NULL;
120 static const char * const filesystem_cmd_group_usage[] = {
121 "btrfs filesystem [<group>] <command> [<args>]",
125 static const char * const cmd_filesystem_df_usage[] = {
126 "btrfs filesystem df [options] <path>",
127 "Show space usage information for a mount point",
128 "-b|--raw raw numbers in bytes",
129 "-h human friendly numbers, base 1024 (default)",
130 "-H human friendly numbers, base 1000",
131 "--iec use 1024 as a base (KiB, MiB, GiB, TiB)",
132 "--si use 1000 as a base (kB, MB, GB, TB)",
133 "-k|--kbytes show sizes in KiB, or kB with --si",
134 "-m|--mbytes show sizes in MiB, or MB with --si",
135 "-g|--gbytes show sizes in GiB, or GB with --si",
136 "-t|--tbytes show sizes in TiB, or TB with --si",
140 static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret)
144 struct btrfs_ioctl_space_args *sargs;
146 sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
150 sargs->space_slots = 0;
151 sargs->total_spaces = 0;
153 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
156 fprintf(stderr, "ERROR: couldn't get space info - %s\n",
161 /* This really should never happen */
162 if (!sargs->total_spaces) {
166 count = sargs->total_spaces;
169 sargs = malloc(sizeof(struct btrfs_ioctl_space_args) +
170 (count * sizeof(struct btrfs_ioctl_space_info)));
174 sargs->space_slots = count;
175 sargs->total_spaces = 0;
176 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
179 fprintf(stderr, "ERROR: get space info count %llu - %s\n",
188 static void print_df(struct btrfs_ioctl_space_args *sargs, unsigned unit_mode)
191 struct btrfs_ioctl_space_info *sp = sargs->spaces;
193 for (i = 0; i < sargs->total_spaces; i++, sp++) {
194 printf("%s, %s: total=%s, used=%s\n",
195 btrfs_group_type_str(sp->flags),
196 btrfs_group_profile_str(sp->flags),
197 pretty_size_mode(sp->total_bytes, unit_mode),
198 pretty_size_mode(sp->used_bytes, unit_mode));
202 static int cmd_filesystem_df(int argc, char **argv)
204 struct btrfs_ioctl_space_args *sargs = NULL;
208 DIR *dirstream = NULL;
209 unsigned unit_mode = UNITS_DEFAULT;
213 static const struct option long_options[] = {
214 { "raw", no_argument, NULL, 'b'},
215 { "kbytes", no_argument, NULL, 'k'},
216 { "mbytes", no_argument, NULL, 'm'},
217 { "gbytes", no_argument, NULL, 'g'},
218 { "tbytes", no_argument, NULL, 't'},
219 { "si", no_argument, NULL, GETOPT_VAL_SI},
220 { "iec", no_argument, NULL, GETOPT_VAL_IEC},
222 int c = getopt_long(argc, argv, "bhHkmgt", long_options,
228 unit_mode = UNITS_RAW;
231 units_set_base(&unit_mode, UNITS_KBYTES);
234 units_set_base(&unit_mode, UNITS_MBYTES);
237 units_set_base(&unit_mode, UNITS_GBYTES);
240 units_set_base(&unit_mode, UNITS_TBYTES);
243 unit_mode = UNITS_HUMAN_BINARY;
246 unit_mode = UNITS_HUMAN_DECIMAL;
249 units_set_mode(&unit_mode, UNITS_DECIMAL);
252 units_set_mode(&unit_mode, UNITS_BINARY);
255 usage(cmd_filesystem_df_usage);
259 if (check_argc_exact(argc, optind + 1))
260 usage(cmd_filesystem_df_usage);
264 fd = open_file_or_dir(path, &dirstream);
266 fprintf(stderr, "ERROR: can't access '%s'\n", path);
269 ret = get_df(fd, &sargs);
272 print_df(sargs, unit_mode);
275 fprintf(stderr, "ERROR: get_df failed %s\n", strerror(-ret));
278 close_file_or_dir(fd, dirstream);
282 static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label,
285 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
286 int search_len = strlen(search);
288 search_len = min(search_len, BTRFS_UUID_UNPARSED_SIZE);
289 uuid_unparse(fsid, uuidbuf);
290 if (!strncmp(uuidbuf, search, search_len))
293 if (strlen(label) && strcmp(label, search) == 0)
296 if (strcmp(mnt, search) == 0)
302 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
304 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
305 struct list_head *cur;
306 struct btrfs_device *device;
307 int search_len = strlen(search);
309 search_len = min(search_len, BTRFS_UUID_UNPARSED_SIZE);
310 uuid_unparse(fs_devices->fsid, uuidbuf);
311 if (!strncmp(uuidbuf, search, search_len))
314 list_for_each(cur, &fs_devices->devices) {
315 device = list_entry(cur, struct btrfs_device, dev_list);
316 if ((device->label && strcmp(device->label, search) == 0) ||
317 strcmp(device->name, search) == 0)
324 * Sort devices by devid, ascending
326 static int cmp_device_id(void *priv, struct list_head *a,
329 const struct btrfs_device *da = list_entry(a, struct btrfs_device,
331 const struct btrfs_device *db = list_entry(b, struct btrfs_device,
334 return da->devid < db->devid ? -1 :
335 da->devid > db->devid ? 1 : 0;
338 static void splice_device_list(struct list_head *seed_devices,
339 struct list_head *all_devices)
341 struct btrfs_device *in_all, *next_all;
342 struct btrfs_device *in_seed, *next_seed;
344 list_for_each_entry_safe(in_all, next_all, all_devices, dev_list) {
345 list_for_each_entry_safe(in_seed, next_seed, seed_devices,
347 if (in_all->devid == in_seed->devid) {
349 * When do dev replace in a sprout fs
350 * to a dev in its seed fs, the replacing
351 * dev will reside in the sprout fs and
352 * the replaced dev will still exist
354 * So pick the latest one when showing
357 if (in_all->generation
358 < in_seed->generation) {
359 list_del(&in_all->dev_list);
361 } else if (in_all->generation
362 > in_seed->generation) {
363 list_del(&in_seed->dev_list);
371 list_splice(seed_devices, all_devices);
374 static void print_devices(struct btrfs_fs_devices *fs_devices,
377 struct btrfs_device *device;
378 struct btrfs_fs_devices *cur_fs;
379 struct list_head *all_devices;
381 all_devices = &fs_devices->devices;
382 cur_fs = fs_devices->seed;
383 /* add all devices of seed fs to the fs to be printed */
385 splice_device_list(&cur_fs->devices, all_devices);
386 cur_fs = cur_fs->seed;
389 list_sort(NULL, all_devices, cmp_device_id);
390 list_for_each_entry(device, all_devices, dev_list) {
391 printf("\tdevid %4llu size %s used %s path %s\n",
392 (unsigned long long)device->devid,
393 pretty_size(device->total_bytes),
394 pretty_size(device->bytes_used), device->name);
400 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
402 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
403 struct btrfs_device *device;
407 if (add_seen_fsid(fs_devices->fsid))
410 uuid_unparse(fs_devices->fsid, uuidbuf);
411 device = list_entry(fs_devices->devices.next, struct btrfs_device,
413 if (device->label && device->label[0])
414 printf("Label: '%s' ", device->label);
416 printf("Label: none ");
418 total = device->total_devs;
419 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
420 (unsigned long long)total,
421 pretty_size(device->super_bytes_used));
423 print_devices(fs_devices, &devs_found);
425 if (devs_found < total) {
426 printf("\t*** Some devices missing\n");
431 /* adds up all the used spaces as reported by the space info ioctl
433 static u64 calc_used_bytes(struct btrfs_ioctl_space_args *si)
437 for (i = 0; i < si->total_spaces; i++)
438 ret += si->spaces[i].used_bytes;
442 static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
443 struct btrfs_ioctl_dev_info_args *dev_info,
444 struct btrfs_ioctl_space_args *space_info,
445 char *label, char *path)
450 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
451 struct btrfs_ioctl_dev_info_args *tmp_dev_info;
454 ret = add_seen_fsid(fs_info->fsid);
460 uuid_unparse(fs_info->fsid, uuidbuf);
461 if (label && strlen(label))
462 printf("Label: '%s' ", label);
464 printf("Label: none ");
466 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
467 fs_info->num_devices,
468 pretty_size(calc_used_bytes(space_info)));
470 for (i = 0; i < fs_info->num_devices; i++) {
471 char *canonical_path;
473 tmp_dev_info = (struct btrfs_ioctl_dev_info_args *)&dev_info[i];
475 /* Add check for missing devices even mounted */
476 fd = open((char *)tmp_dev_info->path, O_RDONLY);
482 canonical_path = canonicalize_path((char *)tmp_dev_info->path);
483 printf("\tdevid %4llu size %s used %s path %s\n",
485 pretty_size(tmp_dev_info->total_bytes),
486 pretty_size(tmp_dev_info->bytes_used),
489 free(canonical_path);
493 printf("\t*** Some devices missing\n");
498 static int btrfs_scan_kernel(void *search)
504 struct btrfs_ioctl_fs_info_args fs_info_arg;
505 struct btrfs_ioctl_dev_info_args *dev_info_arg = NULL;
506 struct btrfs_ioctl_space_args *space_info_arg = NULL;
507 char label[BTRFS_LABEL_SIZE];
509 f = setmntent("/proc/self/mounts", "r");
513 memset(label, 0, sizeof(label));
514 while ((mnt = getmntent(f)) != NULL) {
515 if (strcmp(mnt->mnt_type, "btrfs"))
517 ret = get_fs_info(mnt->mnt_dir, &fs_info_arg,
522 if (get_label_mounted(mnt->mnt_dir, label)) {
526 if (search && !match_search_item_kernel(fs_info_arg.fsid,
527 mnt->mnt_dir, label, search)) {
532 fd = open(mnt->mnt_dir, O_RDONLY);
533 if ((fd != -1) && !get_df(fd, &space_info_arg)) {
534 print_one_fs(&fs_info_arg, dev_info_arg,
535 space_info_arg, label, mnt->mnt_dir);
536 kfree(space_info_arg);
537 memset(label, 0, sizeof(label));
550 static int dev_to_fsid(char *dev, __u8 *fsid)
552 struct btrfs_super_block *disk_super;
561 fd = open(dev, O_RDONLY);
568 disk_super = (struct btrfs_super_block *)buf;
569 ret = btrfs_read_dev_super(fd, disk_super,
570 BTRFS_SUPER_INFO_OFFSET, 0);
574 memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
583 static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
585 struct btrfs_fs_devices *cur_seed, *next_seed;
586 struct btrfs_device *device;
588 while (!list_empty(&fs_devices->devices)) {
589 device = list_entry(fs_devices->devices.next,
590 struct btrfs_device, dev_list);
591 list_del(&device->dev_list);
598 /* free seed fs chain */
599 cur_seed = fs_devices->seed;
600 fs_devices->seed = NULL;
602 next_seed = cur_seed->seed;
605 cur_seed = next_seed;
608 list_del(&fs_devices->list);
612 static int copy_device(struct btrfs_device *dst,
613 struct btrfs_device *src)
615 dst->devid = src->devid;
616 memcpy(dst->uuid, src->uuid, BTRFS_UUID_SIZE);
617 if (src->name == NULL)
620 dst->name = strdup(src->name);
624 if (src->label == NULL)
627 dst->label = strdup(src->label);
633 dst->total_devs = src->total_devs;
634 dst->super_bytes_used = src->super_bytes_used;
635 dst->total_bytes = src->total_bytes;
636 dst->bytes_used = src->bytes_used;
637 dst->generation = src->generation;
642 static int copy_fs_devices(struct btrfs_fs_devices *dst,
643 struct btrfs_fs_devices *src)
645 struct btrfs_device *cur_dev, *dev_copy;
648 memcpy(dst->fsid, src->fsid, BTRFS_FSID_SIZE);
649 INIT_LIST_HEAD(&dst->devices);
652 list_for_each_entry(cur_dev, &src->devices, dev_list) {
653 dev_copy = malloc(sizeof(*dev_copy));
659 ret = copy_device(dev_copy, cur_dev);
665 list_add(&dev_copy->dev_list, &dst->devices);
666 dev_copy->fs_devices = dst;
672 static int find_and_copy_seed(struct btrfs_fs_devices *seed,
673 struct btrfs_fs_devices *copy,
674 struct list_head *fs_uuids) {
675 struct btrfs_fs_devices *cur_fs;
677 list_for_each_entry(cur_fs, fs_uuids, list)
678 if (!memcmp(seed->fsid, cur_fs->fsid, BTRFS_FSID_SIZE))
679 return copy_fs_devices(copy, cur_fs);
684 static int has_seed_devices(struct btrfs_fs_devices *fs_devices)
686 struct btrfs_device *device;
687 int dev_cnt_total, dev_cnt = 0;
689 device = list_first_entry(&fs_devices->devices, struct btrfs_device,
692 dev_cnt_total = device->total_devs;
694 list_for_each_entry(device, &fs_devices->devices, dev_list)
697 return dev_cnt_total != dev_cnt;
700 static int search_umounted_fs_uuids(struct list_head *all_uuids,
703 struct btrfs_fs_devices *cur_fs, *fs_copy;
704 struct list_head *fs_uuids;
707 fs_uuids = btrfs_scanned_uuids();
710 * The fs_uuids list is global, and open_ctree_* will
711 * modify it, make a private copy here
713 list_for_each_entry(cur_fs, fs_uuids, list) {
714 /* don't bother handle all fs, if search target specified */
716 if (uuid_search(cur_fs, search) == 0)
721 /* skip all fs already shown as mounted fs */
722 if (is_seen_fsid(cur_fs->fsid))
725 fs_copy = malloc(sizeof(*fs_copy));
731 ret = copy_fs_devices(fs_copy, cur_fs);
737 list_add(&fs_copy->list, all_uuids);
744 static int map_seed_devices(struct list_head *all_uuids)
746 struct btrfs_fs_devices *cur_fs, *cur_seed;
747 struct btrfs_fs_devices *seed_copy;
748 struct btrfs_fs_devices *opened_fs;
749 struct btrfs_device *device;
750 struct btrfs_fs_info *fs_info;
751 struct list_head *fs_uuids;
754 fs_uuids = btrfs_scanned_uuids();
756 list_for_each_entry(cur_fs, all_uuids, list) {
757 device = list_first_entry(&cur_fs->devices,
758 struct btrfs_device, dev_list);
762 /* skip fs without seeds */
763 if (!has_seed_devices(cur_fs))
767 * open_ctree_* detects seed/sprout mapping
769 fs_info = open_ctree_fs_info(device->name, 0, 0,
775 * copy the seed chain under the opened fs
777 opened_fs = fs_info->fs_devices;
779 while (opened_fs->seed) {
780 seed_copy = malloc(sizeof(*seed_copy));
785 ret = find_and_copy_seed(opened_fs->seed, seed_copy,
792 cur_seed->seed = seed_copy;
794 opened_fs = opened_fs->seed;
795 cur_seed = cur_seed->seed;
798 close_ctree(fs_info->chunk_root);
804 close_ctree(fs_info->chunk_root);
808 static const char * const cmd_show_usage[] = {
809 "btrfs filesystem show [options] [<path>|<uuid>|<device>|label]",
810 "Show the structure of a filesystem",
811 "-d|--all-devices show only disks under /dev containing btrfs filesystem",
812 "-m|--mounted show only mounted btrfs",
813 "If no argument is given, structure of all present filesystems is shown.",
817 static int cmd_show(int argc, char **argv)
819 LIST_HEAD(all_uuids);
820 struct btrfs_fs_devices *fs_devices;
823 /* default, search both kernel and udev */
826 char mp[BTRFS_PATH_NAME_MAX + 1];
828 __u8 fsid[BTRFS_FSID_SIZE];
829 char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
834 static struct option long_options[] = {
835 { "all-devices", no_argument, NULL, 'd'},
836 { "mounted", no_argument, NULL, 'm'},
837 { NULL, no_argument, NULL, 0 },
839 int c = getopt_long(argc, argv, "dm", long_options,
845 where = BTRFS_SCAN_LBLKID;
848 where = BTRFS_SCAN_MOUNTED;
851 usage(cmd_show_usage);
855 if (check_argc_max(argc, optind + 1))
856 usage(cmd_show_usage);
859 search = argv[optind];
860 if (strlen(search) == 0)
861 usage(cmd_show_usage);
862 type = check_arg_type(search);
865 * For search is a device:
866 * realpath do /dev/mapper/XX => /dev/dm-X
867 * which is required by BTRFS_SCAN_DEV
868 * For search is a mountpoint:
869 * realpath do /mnt/btrfs/ => /mnt/btrfs
870 * which shall be recognized by btrfs_scan_kernel()
872 if (realpath(search, path))
876 * Needs special handling if input arg is block dev And if
877 * input arg is mount-point just print it right away
879 if (type == BTRFS_ARG_BLKDEV && where != BTRFS_SCAN_LBLKID) {
880 ret = get_btrfs_mount(search, mp, sizeof(mp));
882 /* given block dev is mounted */
884 type = BTRFS_ARG_MNTPOINT;
886 ret = dev_to_fsid(search, fsid);
889 "ERROR: No btrfs on %s\n",
893 uuid_unparse(fsid, uuid_buf);
895 type = BTRFS_ARG_UUID;
901 if (where == BTRFS_SCAN_LBLKID)
904 /* show mounted btrfs */
905 ret = btrfs_scan_kernel(search);
906 if (search && !ret) {
907 /* since search is found we are done */
911 /* shows mounted only */
912 if (where == BTRFS_SCAN_MOUNTED)
916 ret = btrfs_scan_lblkid();
919 fprintf(stderr, "ERROR: %d while scanning\n", ret);
923 found = search_umounted_fs_uuids(&all_uuids, search);
926 "ERROR: %d while searching target device\n", ret);
931 * The seed/sprout mapping are not detected yet,
932 * do mapping build for all umounted fs
934 ret = map_seed_devices(&all_uuids);
937 "ERROR: %d while mapping seed devices\n", ret);
941 list_for_each_entry(fs_devices, &all_uuids, list)
942 print_one_uuid(fs_devices);
944 if (search && !found)
947 while (!list_empty(&all_uuids)) {
948 fs_devices = list_entry(all_uuids.next,
949 struct btrfs_fs_devices, list);
950 free_fs_devices(fs_devices);
953 printf("%s\n", BTRFS_BUILD_VERSION);
958 static const char * const cmd_sync_usage[] = {
959 "btrfs filesystem sync <path>",
960 "Force a sync on a filesystem",
964 static int cmd_sync(int argc, char **argv)
968 DIR *dirstream = NULL;
970 if (check_argc_exact(argc, 2))
971 usage(cmd_sync_usage);
975 fd = open_file_or_dir(path, &dirstream);
977 fprintf(stderr, "ERROR: can't access '%s'\n", path);
981 printf("FSSync '%s'\n", path);
982 res = ioctl(fd, BTRFS_IOC_SYNC);
984 close_file_or_dir(fd, dirstream);
986 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
994 static int parse_compress_type(char *s)
996 if (strcmp(optarg, "zlib") == 0)
997 return BTRFS_COMPRESS_ZLIB;
998 else if (strcmp(optarg, "lzo") == 0)
999 return BTRFS_COMPRESS_LZO;
1001 fprintf(stderr, "Unknown compress type %s\n", s);
1006 static const char * const cmd_defrag_usage[] = {
1007 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
1008 "Defragment a file or a directory",
1011 "-r defragment files recursively",
1012 "-c[zlib,lzo] compress the file while defragmenting",
1013 "-f flush data to disk immediately after defragmenting",
1014 "-s start defragment only from byte onward",
1015 "-l len defragment only up to len bytes",
1016 "-t size minimal size of file to be considered for defragmenting",
1020 static int do_defrag(int fd, int fancy_ioctl,
1021 struct btrfs_ioctl_defrag_range_args *range)
1026 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
1028 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, range);
1033 static int defrag_global_fancy_ioctl;
1034 static struct btrfs_ioctl_defrag_range_args defrag_global_range;
1035 static int defrag_global_verbose;
1036 static int defrag_global_errors;
1037 static int defrag_callback(const char *fpath, const struct stat *sb,
1038 int typeflag, struct FTW *ftwbuf)
1044 if ((typeflag == FTW_F) && S_ISREG(sb->st_mode)) {
1045 if (defrag_global_verbose)
1046 printf("%s\n", fpath);
1047 fd = open(fpath, O_RDWR);
1051 ret = do_defrag(fd, defrag_global_fancy_ioctl, &defrag_global_range);
1054 if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
1055 fprintf(stderr, "ERROR: defrag range ioctl not "
1056 "supported in this kernel, please try "
1057 "without any options.\n");
1058 defrag_global_errors++;
1067 fprintf(stderr, "ERROR: defrag failed on %s - %s\n", fpath, strerror(e));
1068 defrag_global_errors++;
1072 static int cmd_defrag(int argc, char **argv)
1082 struct btrfs_ioctl_defrag_range_args range;
1084 int compress_type = BTRFS_COMPRESS_NONE;
1087 defrag_global_errors = 0;
1088 defrag_global_verbose = 0;
1089 defrag_global_errors = 0;
1090 defrag_global_fancy_ioctl = 0;
1093 int c = getopt(argc, argv, "vrc::fs:l:t:");
1099 compress_type = BTRFS_COMPRESS_ZLIB;
1101 compress_type = parse_compress_type(optarg);
1102 defrag_global_fancy_ioctl = 1;
1106 defrag_global_fancy_ioctl = 1;
1109 defrag_global_verbose = 1;
1112 start = parse_size(optarg);
1113 defrag_global_fancy_ioctl = 1;
1116 len = parse_size(optarg);
1117 defrag_global_fancy_ioctl = 1;
1120 thresh = parse_size(optarg);
1121 defrag_global_fancy_ioctl = 1;
1127 usage(cmd_defrag_usage);
1131 if (check_argc_min(argc - optind, 1))
1132 usage(cmd_defrag_usage);
1134 memset(&defrag_global_range, 0, sizeof(range));
1135 defrag_global_range.start = start;
1136 defrag_global_range.len = len;
1137 defrag_global_range.extent_thresh = thresh;
1138 if (compress_type) {
1139 defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
1140 defrag_global_range.compress_type = compress_type;
1143 defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
1145 for (i = optind; i < argc; i++) {
1149 fd = open_file_or_dir(argv[i], &dirstream);
1151 fprintf(stderr, "ERROR: failed to open %s - %s\n", argv[i],
1153 defrag_global_errors++;
1154 close_file_or_dir(fd, dirstream);
1157 if (fstat(fd, &st)) {
1158 fprintf(stderr, "ERROR: failed to stat %s - %s\n",
1159 argv[i], strerror(errno));
1160 defrag_global_errors++;
1161 close_file_or_dir(fd, dirstream);
1164 if (!(S_ISDIR(st.st_mode) || S_ISREG(st.st_mode))) {
1166 "ERROR: %s is not a directory or a regular file\n",
1168 defrag_global_errors++;
1169 close_file_or_dir(fd, dirstream);
1173 if (S_ISDIR(st.st_mode)) {
1174 ret = nftw(argv[i], defrag_callback, 10,
1175 FTW_MOUNT | FTW_PHYS);
1178 /* errors are handled in the callback */
1181 if (defrag_global_verbose)
1182 printf("%s\n", argv[i]);
1183 ret = do_defrag(fd, defrag_global_fancy_ioctl,
1184 &defrag_global_range);
1188 if (defrag_global_verbose)
1189 printf("%s\n", argv[i]);
1190 ret = do_defrag(fd, defrag_global_fancy_ioctl,
1191 &defrag_global_range);
1194 close_file_or_dir(fd, dirstream);
1195 if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
1196 fprintf(stderr, "ERROR: defrag range ioctl not "
1197 "supported in this kernel, please try "
1198 "without any options.\n");
1199 defrag_global_errors++;
1203 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
1204 argv[i], strerror(e));
1205 defrag_global_errors++;
1208 if (defrag_global_verbose)
1209 printf("%s\n", BTRFS_BUILD_VERSION);
1210 if (defrag_global_errors)
1211 fprintf(stderr, "total %d failures\n", defrag_global_errors);
1213 return !!defrag_global_errors;
1216 static const char * const cmd_resize_usage[] = {
1217 "btrfs filesystem resize [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>",
1218 "Resize a filesystem",
1219 "If 'max' is passed, the filesystem will occupy all available space",
1220 "on the device 'devid'.",
1221 "[kK] means KiB, which denotes 1KiB = 1024B, 1MiB = 1024KiB, etc.",
1225 static int cmd_resize(int argc, char **argv)
1227 struct btrfs_ioctl_vol_args args;
1228 int fd, res, len, e;
1229 char *amount, *path;
1230 DIR *dirstream = NULL;
1232 if (check_argc_exact(argc, 3))
1233 usage(cmd_resize_usage);
1238 len = strlen(amount);
1239 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
1240 fprintf(stderr, "ERROR: size value too long ('%s)\n",
1245 fd = open_file_or_dir(path, &dirstream);
1247 fprintf(stderr, "ERROR: can't access '%s'\n", path);
1251 printf("Resize '%s' of '%s'\n", path, amount);
1252 strncpy_null(args.name, amount);
1253 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
1255 close_file_or_dir(fd, dirstream);
1257 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
1264 static const char * const cmd_label_usage[] = {
1265 "btrfs filesystem label [<device>|<mount_point>] [<newlabel>]",
1266 "Get or change the label of a filesystem",
1267 "With one argument, get the label of filesystem on <device>.",
1268 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
1272 static int cmd_label(int argc, char **argv)
1274 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
1275 usage(cmd_label_usage);
1278 return set_label(argv[1], argv[2]);
1280 char label[BTRFS_LABEL_SIZE];
1283 ret = get_label(argv[1], label);
1285 fprintf(stdout, "%s\n", label);
1291 const struct cmd_group filesystem_cmd_group = {
1292 filesystem_cmd_group_usage, NULL, {
1293 { "df", cmd_filesystem_df, cmd_filesystem_df_usage, NULL, 0 },
1294 { "show", cmd_show, cmd_show_usage, NULL, 0 },
1295 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
1296 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
1297 { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
1298 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
1299 { "label", cmd_label, cmd_label_usage, NULL, 0 },
1300 { "usage", cmd_filesystem_usage,
1301 cmd_filesystem_usage_usage, NULL, 0 },
1307 int cmd_filesystem(int argc, char **argv)
1309 return handle_command_group(&filesystem_cmd_group, argc, argv);