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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
0ef6f454 LP |
2 | #pragma once |
3 | ||
d7c7c334 | 4 | #include <stdbool.h> |
11c3a366 | 5 | #include <stdint.h> |
d7c7c334 LP |
6 | #include <sys/types.h> |
7 | ||
11c3a366 TA |
8 | #include "sd-id128.h" |
9 | ||
b3cade0c | 10 | #include "copy.h" |
10f9c755 LP |
11 | #include "time-util.h" |
12 | ||
13 | typedef struct BtrfsSubvolInfo { | |
14 | uint64_t subvol_id; | |
15 | usec_t otime; | |
16 | ||
17 | sd_id128_t uuid; | |
18 | sd_id128_t parent_uuid; | |
19 | ||
20 | bool read_only; | |
21 | } BtrfsSubvolInfo; | |
22 | ||
b6b18498 | 23 | typedef struct BtrfsQuotaInfo { |
cb81cd80 | 24 | uint64_t referenced; |
b6b18498 | 25 | uint64_t exclusive; |
cb81cd80 | 26 | uint64_t referenced_max; |
b6b18498 LP |
27 | uint64_t exclusive_max; |
28 | } BtrfsQuotaInfo; | |
29 | ||
e9bc1871 | 30 | typedef enum BtrfsSnapshotFlags { |
be0b7a1a LP |
31 | BTRFS_SNAPSHOT_FALLBACK_COPY = 1 << 0, /* If the source isn't a subvolume, reflink everything */ |
32 | BTRFS_SNAPSHOT_READ_ONLY = 1 << 1, | |
33 | BTRFS_SNAPSHOT_RECURSIVE = 1 << 2, | |
34 | BTRFS_SNAPSHOT_QUOTA = 1 << 3, | |
35 | BTRFS_SNAPSHOT_FALLBACK_DIRECTORY = 1 << 4, /* If the destination doesn't support subvolumes, reflink/copy instead */ | |
36 | BTRFS_SNAPSHOT_FALLBACK_IMMUTABLE = 1 << 5, /* When we can't create a subvolume, use the FS_IMMUTABLE attribute for indicating read-only */ | |
07a30bb1 | 37 | BTRFS_SNAPSHOT_SIGINT = 1 << 6, /* Check for SIGINT regularly, and return EINTR if seen */ |
e9bc1871 LP |
38 | } BtrfsSnapshotFlags; |
39 | ||
5bcd08db | 40 | typedef enum BtrfsRemoveFlags { |
be0b7a1a LP |
41 | BTRFS_REMOVE_RECURSIVE = 1 << 0, |
42 | BTRFS_REMOVE_QUOTA = 1 << 1, | |
5bcd08db LP |
43 | } BtrfsRemoveFlags; |
44 | ||
21222ea5 | 45 | int btrfs_is_filesystem(int fd); |
2904e949 LP |
46 | |
47 | int btrfs_is_subvol_fd(int fd); | |
48 | int btrfs_is_subvol(const char *path); | |
d7c7c334 | 49 | |
5bcd08db LP |
50 | int btrfs_reflink(int infd, int outfd); |
51 | int btrfs_clone_range(int infd, uint64_t in_offset, int ofd, uint64_t out_offset, uint64_t sz); | |
52 | ||
53 | int btrfs_get_block_device_fd(int fd, dev_t *dev); | |
54 | int btrfs_get_block_device(const char *path, dev_t *dev); | |
55 | ||
56 | int btrfs_defrag_fd(int fd); | |
57 | int btrfs_defrag(const char *p); | |
58 | ||
59 | int btrfs_quota_enable_fd(int fd, bool b); | |
60 | int btrfs_quota_enable(const char *path, bool b); | |
61 | ||
62 | int btrfs_quota_scan_start(int fd); | |
63 | int btrfs_quota_scan_wait(int fd); | |
64 | int btrfs_quota_scan_ongoing(int fd); | |
65 | ||
d7c7c334 | 66 | int btrfs_subvol_make(const char *path); |
62f9666a | 67 | int btrfs_subvol_make_fd(int fd, const char *subvolume); |
587fec42 | 68 | |
d78a95d7 LP |
69 | int btrfs_subvol_make_fallback(const char *path, mode_t); |
70 | ||
b3cade0c LP |
71 | int btrfs_subvol_snapshot_fd_full(int old_fd, const char *new_path, BtrfsSnapshotFlags flags, copy_progress_path_t progress_path, copy_progress_bytes_t progress_bytes, void *userdata); |
72 | static inline int btrfs_subvol_snapshot_fd(int old_fd, const char *new_path, BtrfsSnapshotFlags flags) { | |
73 | return btrfs_subvol_snapshot_fd_full(old_fd, new_path, flags, NULL, NULL, NULL); | |
74 | } | |
75 | ||
76 | int btrfs_subvol_snapshot_full(const char *old_path, const char *new_path, BtrfsSnapshotFlags flags, copy_progress_path_t progress_path, copy_progress_bytes_t progress_bytes, void *userdata); | |
77 | static inline int btrfs_subvol_snapshot(const char *old_path, const char *new_path, BtrfsSnapshotFlags flags) { | |
78 | return btrfs_subvol_snapshot_full(old_path, new_path, flags, NULL, NULL, NULL); | |
79 | } | |
10f9c755 | 80 | |
5bcd08db LP |
81 | int btrfs_subvol_remove(const char *path, BtrfsRemoveFlags flags); |
82 | int btrfs_subvol_remove_fd(int fd, const char *subvolume, BtrfsRemoveFlags flags); | |
83 | ||
0d6e763b | 84 | int btrfs_subvol_set_read_only_fd(int fd, bool b); |
10f9c755 LP |
85 | int btrfs_subvol_set_read_only(const char *path, bool b); |
86 | int btrfs_subvol_get_read_only_fd(int fd); | |
5bcd08db | 87 | |
90578cbd | 88 | int btrfs_subvol_get_id(int fd, const char *subvolume, uint64_t *ret); |
10f9c755 | 89 | int btrfs_subvol_get_id_fd(int fd, uint64_t *ret); |
5bcd08db | 90 | int btrfs_subvol_get_parent(int fd, uint64_t subvol_id, uint64_t *ret); |
d7c7c334 | 91 | |
5bcd08db | 92 | int btrfs_subvol_get_info_fd(int fd, uint64_t subvol_id, BtrfsSubvolInfo *info); |
d7c7c334 | 93 | |
5bcd08db | 94 | int btrfs_subvol_find_subtree_qgroup(int fd, uint64_t subvol_id, uint64_t *ret); |
f27a3864 | 95 | |
5bcd08db LP |
96 | int btrfs_subvol_get_subtree_quota(const char *path, uint64_t subvol_id, BtrfsQuotaInfo *quota); |
97 | int btrfs_subvol_get_subtree_quota_fd(int fd, uint64_t subvol_id, BtrfsQuotaInfo *quota); | |
754061ce | 98 | |
5bcd08db LP |
99 | int btrfs_subvol_set_subtree_quota_limit(const char *path, uint64_t subvol_id, uint64_t referenced_max); |
100 | int btrfs_subvol_set_subtree_quota_limit_fd(int fd, uint64_t subvol_id, uint64_t referenced_max); | |
d6ce17c7 | 101 | |
5bcd08db LP |
102 | int btrfs_subvol_auto_qgroup_fd(int fd, uint64_t subvol_id, bool new_qgroup); |
103 | int btrfs_subvol_auto_qgroup(const char *path, uint64_t subvol_id, bool create_intermediary_qgroup); | |
efe02862 | 104 | |
5bcd08db LP |
105 | int btrfs_qgroupid_make(uint64_t level, uint64_t id, uint64_t *ret); |
106 | int btrfs_qgroupid_split(uint64_t qgroupid, uint64_t *level, uint64_t *id); | |
107 | ||
108 | int btrfs_qgroup_create(int fd, uint64_t qgroupid); | |
109 | int btrfs_qgroup_destroy(int fd, uint64_t qgroupid); | |
110 | int btrfs_qgroup_destroy_recursive(int fd, uint64_t qgroupid); | |
111 | ||
112 | int btrfs_qgroup_set_limit_fd(int fd, uint64_t qgroupid, uint64_t referenced_max); | |
113 | int btrfs_qgroup_set_limit(const char *path, uint64_t qgroupid, uint64_t referenced_max); | |
114 | ||
115 | int btrfs_qgroup_copy_limits(int fd, uint64_t old_qgroupid, uint64_t new_qgroupid); | |
116 | ||
117 | int btrfs_qgroup_assign(int fd, uint64_t child, uint64_t parent); | |
118 | int btrfs_qgroup_unassign(int fd, uint64_t child, uint64_t parent); | |
d9e2daaf | 119 | |
5bcd08db | 120 | int btrfs_qgroup_find_parents(int fd, uint64_t qgroupid, uint64_t **ret); |
3f952f92 | 121 | |
5bcd08db LP |
122 | int btrfs_qgroup_get_quota_fd(int fd, uint64_t qgroupid, BtrfsQuotaInfo *quota); |
123 | int btrfs_qgroup_get_quota(const char *path, uint64_t qgroupid, BtrfsQuotaInfo *quota); | |
67f0ac8c LP |
124 | |
125 | static inline int btrfs_log_dev_root(int level, int ret, const char *p) { | |
126 | return log_full_errno(level, ret, | |
127 | "File system behind %s is reported by btrfs to be backed by pseudo-device /dev/root, which is not a valid userspace accessible device node. " | |
128 | "Cannot determine correct backing block device.", p); | |
129 | } | |
674b04ff LP |
130 | |
131 | static inline bool btrfs_might_be_subvol(const struct stat *st) { | |
132 | if (!st) | |
133 | return false; | |
134 | ||
135 | /* Returns true if this 'struct stat' looks like it could refer to a btrfs subvolume. To make a final | |
136 | * decision, needs to be combined with an fstatfs() check to see if this is actually btrfs. */ | |
137 | ||
138 | return S_ISDIR(st->st_mode) && st->st_ino == 256; | |
139 | } |