1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 This file is part of systemd.
7 Copyright 2014 Lennart Poettering
12 #include <sys/types.h>
16 #include "time-util.h"
18 typedef struct BtrfsSubvolInfo
{
23 sd_id128_t parent_uuid
;
28 typedef struct BtrfsQuotaInfo
{
31 uint64_t referenced_max
;
32 uint64_t exclusive_max
;
35 typedef enum BtrfsSnapshotFlags
{
36 BTRFS_SNAPSHOT_FALLBACK_COPY
= 1, /* If the source isn't a subvolume, reflink everything */
37 BTRFS_SNAPSHOT_READ_ONLY
= 2,
38 BTRFS_SNAPSHOT_RECURSIVE
= 4,
39 BTRFS_SNAPSHOT_QUOTA
= 8,
40 BTRFS_SNAPSHOT_FALLBACK_DIRECTORY
= 16, /* If the destination doesn't support subvolumes, reflink/copy instead */
41 BTRFS_SNAPSHOT_FALLBACK_IMMUTABLE
= 32, /* When we can't create a subvolume, use the FS_IMMUTABLE attribute for indicating read-only */
44 typedef enum BtrfsRemoveFlags
{
45 BTRFS_REMOVE_RECURSIVE
= 1,
46 BTRFS_REMOVE_QUOTA
= 2,
49 int btrfs_is_filesystem(int fd
);
51 int btrfs_is_subvol_fd(int fd
);
52 int btrfs_is_subvol(const char *path
);
54 int btrfs_reflink(int infd
, int outfd
);
55 int btrfs_clone_range(int infd
, uint64_t in_offset
, int ofd
, uint64_t out_offset
, uint64_t sz
);
57 int btrfs_get_block_device_fd(int fd
, dev_t
*dev
);
58 int btrfs_get_block_device(const char *path
, dev_t
*dev
);
60 int btrfs_defrag_fd(int fd
);
61 int btrfs_defrag(const char *p
);
63 int btrfs_quota_enable_fd(int fd
, bool b
);
64 int btrfs_quota_enable(const char *path
, bool b
);
66 int btrfs_quota_scan_start(int fd
);
67 int btrfs_quota_scan_wait(int fd
);
68 int btrfs_quota_scan_ongoing(int fd
);
70 int btrfs_resize_loopback_fd(int fd
, uint64_t size
, bool grow_only
);
71 int btrfs_resize_loopback(const char *path
, uint64_t size
, bool grow_only
);
73 int btrfs_subvol_make(const char *path
);
75 int btrfs_subvol_snapshot_fd(int old_fd
, const char *new_path
, BtrfsSnapshotFlags flags
);
76 int btrfs_subvol_snapshot(const char *old_path
, const char *new_path
, BtrfsSnapshotFlags flags
);
78 int btrfs_subvol_remove(const char *path
, BtrfsRemoveFlags flags
);
79 int btrfs_subvol_remove_fd(int fd
, const char *subvolume
, BtrfsRemoveFlags flags
);
81 int btrfs_subvol_set_read_only_fd(int fd
, bool b
);
82 int btrfs_subvol_set_read_only(const char *path
, bool b
);
83 int btrfs_subvol_get_read_only_fd(int fd
);
85 int btrfs_subvol_get_id(int fd
, const char *subvolume
, uint64_t *ret
);
86 int btrfs_subvol_get_id_fd(int fd
, uint64_t *ret
);
87 int btrfs_subvol_get_parent(int fd
, uint64_t subvol_id
, uint64_t *ret
);
89 int btrfs_subvol_get_info_fd(int fd
, uint64_t subvol_id
, BtrfsSubvolInfo
*info
);
91 int btrfs_subvol_find_subtree_qgroup(int fd
, uint64_t subvol_id
, uint64_t *ret
);
93 int btrfs_subvol_get_subtree_quota(const char *path
, uint64_t subvol_id
, BtrfsQuotaInfo
*quota
);
94 int btrfs_subvol_get_subtree_quota_fd(int fd
, uint64_t subvol_id
, BtrfsQuotaInfo
*quota
);
96 int btrfs_subvol_set_subtree_quota_limit(const char *path
, uint64_t subvol_id
, uint64_t referenced_max
);
97 int btrfs_subvol_set_subtree_quota_limit_fd(int fd
, uint64_t subvol_id
, uint64_t referenced_max
);
99 int btrfs_subvol_auto_qgroup_fd(int fd
, uint64_t subvol_id
, bool new_qgroup
);
100 int btrfs_subvol_auto_qgroup(const char *path
, uint64_t subvol_id
, bool create_intermediary_qgroup
);
102 int btrfs_qgroupid_make(uint64_t level
, uint64_t id
, uint64_t *ret
);
103 int btrfs_qgroupid_split(uint64_t qgroupid
, uint64_t *level
, uint64_t *id
);
105 int btrfs_qgroup_create(int fd
, uint64_t qgroupid
);
106 int btrfs_qgroup_destroy(int fd
, uint64_t qgroupid
);
107 int btrfs_qgroup_destroy_recursive(int fd
, uint64_t qgroupid
);
109 int btrfs_qgroup_set_limit_fd(int fd
, uint64_t qgroupid
, uint64_t referenced_max
);
110 int btrfs_qgroup_set_limit(const char *path
, uint64_t qgroupid
, uint64_t referenced_max
);
112 int btrfs_qgroup_copy_limits(int fd
, uint64_t old_qgroupid
, uint64_t new_qgroupid
);
114 int btrfs_qgroup_assign(int fd
, uint64_t child
, uint64_t parent
);
115 int btrfs_qgroup_unassign(int fd
, uint64_t child
, uint64_t parent
);
117 int btrfs_qgroup_find_parents(int fd
, uint64_t qgroupid
, uint64_t **ret
);
119 int btrfs_qgroup_get_quota_fd(int fd
, uint64_t qgroupid
, BtrfsQuotaInfo
*quota
);
120 int btrfs_qgroup_get_quota(const char *path
, uint64_t qgroupid
, BtrfsQuotaInfo
*quota
);