static struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = {NULL,};
+static int is_seen_fsid(u8 *fsid)
+{
+ u8 hash = fsid[0];
+ int slot = hash % SEEN_FSID_HASH_SIZE;
+ struct seen_fsid *seen = seen_fsid_hash[slot];
+
+ return seen ? 1 : 0;
+}
+
static int add_seen_fsid(u8 *fsid)
{
u8 hash = fsid[0];
};
static const char * const cmd_df_usage[] = {
- "btrfs filesystem df <path>",
- "Show space usage information for a mount point",
- NULL
+ "btrfs filesystem df [options] <path>",
+ "Show space usage information for a mount point",
+ "-b|--raw raw numbers in bytes",
+ "-h human friendly numbers, base 1024 (default)",
+ "-H human friendly numbers, base 1000",
+ "--iec use 1024 as a base (KiB, MiB, GiB, TiB)",
+ "--si use 1000 as a base (kB, MB, GB, TB)",
+ "-k|--kbytes show sizes in KiB, or kB with --si",
+ "-m|--mbytes show sizes in MiB, or MB with --si",
+ "-g|--gbytes show sizes in GiB, or GB with --si",
+ "-t|--tbytes show sizes in TiB, or TB with --si",
+ NULL
};
static char *group_type_str(u64 flag)
{
- switch (flag & BTRFS_BLOCK_GROUP_TYPE_MASK) {
+ u64 mask = BTRFS_BLOCK_GROUP_TYPE_MASK |
+ BTRFS_SPACE_INFO_GLOBAL_RSV;
+
+ switch (flag & mask) {
case BTRFS_BLOCK_GROUP_DATA:
return "Data";
case BTRFS_BLOCK_GROUP_SYSTEM:
return "Metadata";
case BTRFS_BLOCK_GROUP_DATA|BTRFS_BLOCK_GROUP_METADATA:
return "Data+Metadata";
+ case BTRFS_SPACE_INFO_GLOBAL_RSV:
+ return "GlobalReserve";
default:
return "unknown";
}
return 0;
}
-static void print_df(struct btrfs_ioctl_space_args *sargs)
+static void print_df(struct btrfs_ioctl_space_args *sargs, unsigned unit_mode)
{
u64 i;
struct btrfs_ioctl_space_info *sp = sargs->spaces;
printf("%s, %s: total=%s, used=%s\n",
group_type_str(sp->flags),
group_profile_str(sp->flags),
- pretty_size(sp->total_bytes),
- pretty_size(sp->used_bytes));
+ pretty_size_mode(sp->total_bytes, unit_mode),
+ pretty_size_mode(sp->used_bytes, unit_mode));
}
}
int ret;
int fd;
char *path;
- DIR *dirstream = NULL;
+ DIR *dirstream = NULL;
+ unsigned unit_mode = UNITS_DEFAULT;
- if (check_argc_exact(argc, 2))
+ while (1) {
+ int long_index;
+ static const struct option long_options[] = {
+ { "raw", no_argument, NULL, 'b'},
+ { "kbytes", no_argument, NULL, 'k'},
+ { "mbytes", no_argument, NULL, 'm'},
+ { "gbytes", no_argument, NULL, 'g'},
+ { "tbytes", no_argument, NULL, 't'},
+ { "si", no_argument, NULL, 256},
+ { "iec", no_argument, NULL, 257},
+ };
+ int c = getopt_long(argc, argv, "bhHkmgt", long_options,
+ &long_index);
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'b':
+ unit_mode = UNITS_RAW;
+ break;
+ case 'k':
+ units_set_base(&unit_mode, UNITS_KBYTES);
+ break;
+ case 'm':
+ units_set_base(&unit_mode, UNITS_MBYTES);
+ break;
+ case 'g':
+ units_set_base(&unit_mode, UNITS_GBYTES);
+ break;
+ case 't':
+ units_set_base(&unit_mode, UNITS_TBYTES);
+ break;
+ case 'h':
+ unit_mode = UNITS_HUMAN_BINARY;
+ break;
+ case 'H':
+ unit_mode = UNITS_HUMAN_DECIMAL;
+ break;
+ case 256:
+ units_set_mode(&unit_mode, UNITS_DECIMAL);
+ break;
+ case 257:
+ units_set_mode(&unit_mode, UNITS_BINARY);
+ break;
+ default:
+ usage(cmd_df_usage);
+ }
+ }
+
+ if (check_argc_exact(argc, optind + 1))
usage(cmd_df_usage);
- path = argv[1];
+ path = argv[optind];
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
}
ret = get_df(fd, &sargs);
- if (!ret && sargs) {
- print_df(sargs);
+ if (ret == 0) {
+ print_df(sargs, unit_mode);
free(sargs);
} else {
fprintf(stderr, "ERROR: get_df failed %s\n", strerror(-ret));
da->devid > db->devid ? 1 : 0;
}
+static void splice_device_list(struct list_head *seed_devices,
+ struct list_head *all_devices)
+{
+ struct btrfs_device *in_all, *next_all;
+ struct btrfs_device *in_seed, *next_seed;
+
+ list_for_each_entry_safe(in_all, next_all, all_devices, dev_list) {
+ list_for_each_entry_safe(in_seed, next_seed, seed_devices,
+ dev_list) {
+ if (in_all->devid == in_seed->devid) {
+ /*
+ * When do dev replace in a sprout fs
+ * to a dev in its seed fs, the replacing
+ * dev will reside in the sprout fs and
+ * the replaced dev will still exist
+ * in the seed fs.
+ * So pick the latest one when showing
+ * the sprout fs.
+ */
+ if (in_all->generation
+ < in_seed->generation) {
+ list_del(&in_all->dev_list);
+ free(in_all);
+ } else if (in_all->generation
+ > in_seed->generation) {
+ list_del(&in_seed->dev_list);
+ free(in_seed);
+ }
+ break;
+ }
+ }
+ }
+
+ list_splice(seed_devices, all_devices);
+}
+
+static void print_devices(struct btrfs_fs_devices *fs_devices,
+ u64 *devs_found)
+{
+ struct btrfs_device *device;
+ struct btrfs_fs_devices *cur_fs;
+ struct list_head *all_devices;
+
+ all_devices = &fs_devices->devices;
+ cur_fs = fs_devices->seed;
+ /* add all devices of seed fs to the fs to be printed */
+ while (cur_fs) {
+ splice_device_list(&cur_fs->devices, all_devices);
+ cur_fs = cur_fs->seed;
+ }
+
+ list_sort(NULL, all_devices, cmp_device_id);
+ list_for_each_entry(device, all_devices, dev_list) {
+ printf("\tdevid %4llu size %s used %s path %s\n",
+ (unsigned long long)device->devid,
+ pretty_size(device->total_bytes),
+ pretty_size(device->bytes_used), device->name);
+
+ (*devs_found)++;
+ }
+}
+
static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
{
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
- struct list_head *cur;
struct btrfs_device *device;
u64 devs_found = 0;
u64 total;
else
printf("Label: none ");
-
total = device->total_devs;
printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
(unsigned long long)total,
pretty_size(device->super_bytes_used));
- list_sort(NULL, &fs_devices->devices, cmp_device_id);
- list_for_each(cur, &fs_devices->devices) {
- device = list_entry(cur, struct btrfs_device, dev_list);
+ print_devices(fs_devices, &devs_found);
- printf("\tdevid %4llu size %s used %s path %s\n",
- (unsigned long long)device->devid,
- pretty_size(device->total_bytes),
- pretty_size(device->bytes_used), device->name);
-
- devs_found++;
- }
if (devs_found < total) {
printf("\t*** Some devices missing\n");
}
disk_super = (struct btrfs_super_block *)buf;
ret = btrfs_read_dev_super(fd, disk_super,
- BTRFS_SUPER_INFO_OFFSET);
+ BTRFS_SUPER_INFO_OFFSET, 0);
if (ret)
goto out;
return ret;
}
+static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
+{
+ struct btrfs_fs_devices *cur_seed, *next_seed;
+ struct btrfs_device *device;
+
+ while (!list_empty(&fs_devices->devices)) {
+ device = list_entry(fs_devices->devices.next,
+ struct btrfs_device, dev_list);
+ list_del(&device->dev_list);
+
+ free(device->name);
+ free(device->label);
+ free(device);
+ }
+
+ /* free seed fs chain */
+ cur_seed = fs_devices->seed;
+ fs_devices->seed = NULL;
+ while (cur_seed) {
+ next_seed = cur_seed->seed;
+ free(cur_seed);
+
+ cur_seed = next_seed;
+ }
+
+ list_del(&fs_devices->list);
+ free(fs_devices);
+}
+
+static int copy_device(struct btrfs_device *dst,
+ struct btrfs_device *src)
+{
+ dst->devid = src->devid;
+ memcpy(dst->uuid, src->uuid, BTRFS_UUID_SIZE);
+ if (src->name == NULL)
+ dst->name = NULL;
+ else {
+ dst->name = strdup(src->name);
+ if (!dst->name)
+ return -ENOMEM;
+ }
+ if (src->label == NULL)
+ dst->label = NULL;
+ else {
+ dst->label = strdup(src->label);
+ if (!dst->label) {
+ free(dst->name);
+ return -ENOMEM;
+ }
+ }
+ dst->total_devs = src->total_devs;
+ dst->super_bytes_used = src->super_bytes_used;
+ dst->total_bytes = src->total_bytes;
+ dst->bytes_used = src->bytes_used;
+ dst->generation = src->generation;
+
+ return 0;
+}
+
+static int copy_fs_devices(struct btrfs_fs_devices *dst,
+ struct btrfs_fs_devices *src)
+{
+ struct btrfs_device *cur_dev, *dev_copy;
+ int ret = 0;
+
+ memcpy(dst->fsid, src->fsid, BTRFS_FSID_SIZE);
+ INIT_LIST_HEAD(&dst->devices);
+ dst->seed = NULL;
+
+ list_for_each_entry(cur_dev, &src->devices, dev_list) {
+ dev_copy = malloc(sizeof(*dev_copy));
+ if (!dev_copy) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ ret = copy_device(dev_copy, cur_dev);
+ if (ret) {
+ free(dev_copy);
+ break;
+ }
+
+ list_add(&dev_copy->dev_list, &dst->devices);
+ dev_copy->fs_devices = dst;
+ }
+
+ return ret;
+}
+
+static int find_and_copy_seed(struct btrfs_fs_devices *seed,
+ struct btrfs_fs_devices *copy,
+ struct list_head *fs_uuids) {
+ struct btrfs_fs_devices *cur_fs;
+
+ list_for_each_entry(cur_fs, fs_uuids, list)
+ if (!memcmp(seed->fsid, cur_fs->fsid, BTRFS_FSID_SIZE))
+ return copy_fs_devices(copy, cur_fs);
+
+ return 1;
+}
+
+static int map_seed_devices(struct list_head *all_uuids,
+ char *search, int *found)
+{
+ struct btrfs_fs_devices *cur_fs, *cur_seed;
+ struct btrfs_fs_devices *fs_copy, *seed_copy;
+ struct btrfs_fs_devices *opened_fs;
+ struct btrfs_device *device;
+ struct btrfs_fs_info *fs_info;
+ struct list_head *fs_uuids;
+ int ret = 0;
+
+ fs_uuids = btrfs_scanned_uuids();
+
+ /*
+ * The fs_uuids list is global, and open_ctree_* will
+ * modify it, make a private copy here
+ */
+ list_for_each_entry(cur_fs, fs_uuids, list) {
+ /* don't bother handle all fs, if search target specified */
+ if (search) {
+ if (uuid_search(cur_fs, search) == 0)
+ continue;
+ *found = 1;
+ }
+
+ /* skip all fs already shown as mounted fs */
+ if (is_seen_fsid(cur_fs->fsid))
+ continue;
+
+ fs_copy = malloc(sizeof(*fs_copy));
+ if (!fs_copy) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = copy_fs_devices(fs_copy, cur_fs);
+ if (ret) {
+ free(fs_copy);
+ goto out;
+ }
+
+ list_add(&fs_copy->list, all_uuids);
+ }
+
+ list_for_each_entry(cur_fs, all_uuids, list) {
+ device = list_first_entry(&cur_fs->devices,
+ struct btrfs_device, dev_list);
+ if (!device)
+ continue;
+ /*
+ * open_ctree_* detects seed/sprout mapping
+ */
+ fs_info = open_ctree_fs_info(device->name, 0, 0,
+ OPEN_CTREE_PARTIAL);
+ if (!fs_info)
+ continue;
+
+ /*
+ * copy the seed chain under the opened fs
+ */
+ opened_fs = fs_info->fs_devices;
+ cur_seed = cur_fs;
+ while (opened_fs->seed) {
+ seed_copy = malloc(sizeof(*seed_copy));
+ if (!seed_copy) {
+ ret = -ENOMEM;
+ goto fail_out;
+ }
+ ret = find_and_copy_seed(opened_fs->seed, seed_copy,
+ fs_uuids);
+ if (ret) {
+ free(seed_copy);
+ goto fail_out;
+ }
+
+ cur_seed->seed = seed_copy;
+
+ opened_fs = opened_fs->seed;
+ cur_seed = cur_seed->seed;
+ }
+
+ close_ctree(fs_info->chunk_root);
+ }
+
+out:
+ return ret;
+fail_out:
+ close_ctree(fs_info->chunk_root);
+ goto out;
+}
+
static const char * const cmd_show_usage[] = {
"btrfs filesystem show [options] [<path>|<uuid>|<device>|label]",
"Show the structure of a filesystem",
static int cmd_show(int argc, char **argv)
{
- struct list_head *all_uuids;
+ LIST_HEAD(all_uuids);
struct btrfs_fs_devices *fs_devices;
- struct list_head *cur_uuid;
char *search = NULL;
int ret;
- int where = BTRFS_SCAN_LBLKID;
+ /* default, search both kernel and udev */
+ int where = -1;
int type = 0;
char mp[BTRFS_PATH_NAME_MAX + 1];
char path[PATH_MAX];
__u8 fsid[BTRFS_FSID_SIZE];
- char uuid_buf[37];
+ char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
int found = 0;
while (1) {
break;
switch (c) {
case 'd':
- where = BTRFS_SCAN_DEV;
+ where = BTRFS_SCAN_LBLKID;
break;
case 'm':
where = BTRFS_SCAN_MOUNTED;
* right away
*/
if (type == BTRFS_ARG_BLKDEV) {
- if (where == BTRFS_SCAN_DEV) {
+ if (where == BTRFS_SCAN_LBLKID) {
/* we need to do this because
* legacy BTRFS_SCAN_DEV
* provides /dev/dm-x paths
}
}
- if (where == BTRFS_SCAN_DEV)
+ if (where == BTRFS_SCAN_LBLKID)
goto devs_only;
/* show mounted btrfs */
goto out;
devs_only:
- ret = scan_for_btrfs(where, !BTRFS_UPDATE_KERNEL);
+ ret = btrfs_scan_lblkid();
if (ret) {
fprintf(stderr, "ERROR: %d while scanning\n", ret);
return 1;
}
-
- all_uuids = btrfs_scanned_uuids();
- list_for_each(cur_uuid, all_uuids) {
- fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
- list);
- if (search && uuid_search(fs_devices, search) == 0)
- continue;
- print_one_uuid(fs_devices);
- found = 1;
+ /*
+ * scan_for_btrfs() don't build seed/sprout mapping,
+ * do mapping build for each scanned fs here
+ */
+ ret = map_seed_devices(&all_uuids, search, &found);
+ if (ret) {
+ fprintf(stderr,
+ "ERROR: %d while mapping seed devices\n", ret);
+ return 1;
}
+
+ list_for_each_entry(fs_devices, &all_uuids, list)
+ print_one_uuid(fs_devices);
+
if (search && !found)
ret = 1;
- while (!list_empty(all_uuids)) {
- fs_devices = list_entry(all_uuids->next,
+ while (!list_empty(&all_uuids)) {
+ fs_devices = list_entry(all_uuids.next,
struct btrfs_fs_devices, list);
- btrfs_close_devices(fs_devices);
+ free_fs_devices(fs_devices);
}
out:
printf("%s\n", BTRFS_BUILD_VERSION);
projects / platform / upstream / btrfs-progs.git / blobdiff