#include "kerncompat.h"
#include "ctree.h"
-#include "ioctl.h"
#include "utils.h"
#include "volumes.h"
#include "commands.h"
#include "cmds-fi-usage.h"
#include "list_sort.h"
#include "disk-io.h"
-#include "cmds-fi-du.h"
#include "help.h"
/*
* for btrfs fi show, we maintain a hash of fsids we've already printed.
* This way we don't print dups if a given FS is mounted more than once.
*/
-#define SEEN_FSID_HASH_SIZE 256
-
-struct seen_fsid {
- u8 fsid[BTRFS_FSID_SIZE];
- struct seen_fsid *next;
-};
-
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];
-
- while (seen) {
- if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
- return 1;
-
- seen = seen->next;
- }
-
- return 0;
-}
-
-static int add_seen_fsid(u8 *fsid)
-{
- u8 hash = fsid[0];
- int slot = hash % SEEN_FSID_HASH_SIZE;
- struct seen_fsid *seen = seen_fsid_hash[slot];
- struct seen_fsid *alloc;
-
- if (!seen)
- goto insert;
-
- while (1) {
- if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
- return -EEXIST;
-
- if (!seen->next)
- break;
-
- seen = seen->next;
- }
-
-insert:
-
- alloc = malloc(sizeof(*alloc));
- if (!alloc)
- return -ENOMEM;
-
- alloc->next = NULL;
- memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE);
-
- if (seen)
- seen->next = alloc;
- else
- seen_fsid_hash[slot] = alloc;
-
- return 0;
-}
-
-static void free_seen_fsid(void)
-{
- int slot;
- struct seen_fsid *seen;
- struct seen_fsid *next;
-
- for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
- seen = seen_fsid_hash[slot];
- while (seen) {
- next = seen->next;
- free(seen);
- seen = next;
- }
- seen_fsid_hash[slot] = NULL;
- }
-}
-
static const char * const filesystem_cmd_group_usage[] = {
"btrfs filesystem [<group>] <command> [<args>]",
NULL
return !!ret;
}
-static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label,
+static int match_search_item_kernel(u8 *fsid, char *mnt, char *label,
char *search)
{
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
u64 devs_found = 0;
u64 total;
- if (add_seen_fsid(fs_devices->fsid))
+ if (add_seen_fsid(fs_devices->fsid, seen_fsid_hash, -1, NULL))
return;
uuid_unparse(fs_devices->fsid, uuidbuf);
struct btrfs_ioctl_dev_info_args *tmp_dev_info;
int ret;
- ret = add_seen_fsid(fs_info->fsid);
+ ret = add_seen_fsid(fs_info->fsid, seen_fsid_hash, -1, NULL);
if (ret == -EEXIST)
return 0;
else if (ret)
goto out;
/* skip all fs already shown as mounted fs */
- if (is_seen_fsid(fs_info_arg.fsid))
+ if (is_seen_fsid(fs_info_arg.fsid, seen_fsid_hash))
continue;
ret = get_label_mounted(mnt->mnt_dir, label);
return !found;
}
-static int dev_to_fsid(const char *dev, __u8 *fsid)
-{
- struct btrfs_super_block *disk_super;
- char buf[BTRFS_SUPER_INFO_SIZE];
- int ret;
- int fd;
-
- fd = open(dev, O_RDONLY);
- if (fd < 0) {
- ret = -errno;
- return ret;
- }
-
- disk_super = (struct btrfs_super_block *)buf;
- ret = btrfs_read_dev_super(fd, disk_super,
- BTRFS_SUPER_INFO_OFFSET, SBREAD_DEFAULT);
- if (ret)
- goto out;
-
- memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
- ret = 0;
-
-out:
- close(fd);
- return ret;
-}
-
static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
{
struct btrfs_fs_devices *cur_seed, *next_seed;
}
/* skip all fs already shown as mounted fs */
- if (is_seen_fsid(cur_fs->fsid))
+ if (is_seen_fsid(cur_fs->fsid, seen_fsid_hash))
continue;
fs_copy = calloc(1, sizeof(*fs_copy));
int type = 0;
char mp[PATH_MAX];
char path[PATH_MAX];
- __u8 fsid[BTRFS_FSID_SIZE];
+ u8 fsid[BTRFS_FSID_SIZE];
char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
unsigned unit_mode;
int found = 0;
free_fs_devices(fs_devices);
}
out:
- free_seen_fsid();
+ free_seen_fsid(seen_fsid_hash);
return ret;
}
return BTRFS_COMPRESS_ZLIB;
else if (strcmp(optarg, "lzo") == 0)
return BTRFS_COMPRESS_LZO;
+ else if (strcmp(optarg, "zstd") == 0)
+ return BTRFS_COMPRESS_ZSTD;
else {
error("unknown compression type %s", s);
exit(1);
"btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
"Defragment a file or a directory",
"",
- "-v be verbose",
- "-r defragment files recursively",
- "-c[zlib,lzo] compress the file while defragmenting",
- "-f flush data to disk immediately after defragmenting",
- "-s start defragment only from byte onward",
- "-l len defragment only up to len bytes",
- "-t size target extent size hint (default: 32M)",
+ "-v be verbose",
+ "-r defragment files recursively",
+ "-c[zlib,lzo,zstd] compress the file while defragmenting",
+ "-f flush data to disk immediately after defragmenting",
+ "-s start defragment only from byte onward",
+ "-l len defragment only up to len bytes",
+ "-t size target extent size hint (default: 32M)",
+ "",
+ "Warning: most Linux kernels will break up the ref-links of COW data",
+ "(e.g., files copied with 'cp --reflink', snapshots) which may cause",
+ "considerable increase of space usage. See btrfs-filesystem(8) for",
+ "more information.",
NULL
};
projects / platform / upstream / btrfs-progs.git / blobdiff