+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-#pragma once
-
-#include <stdbool.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "sd-id128.h"
-
-#include "copy.h"
-#include "time-util.h"
-
-typedef struct BtrfsSubvolInfo {
- uint64_t subvol_id;
- usec_t otime;
-
- sd_id128_t uuid;
- sd_id128_t parent_uuid;
-
- bool read_only;
-} BtrfsSubvolInfo;
-
-typedef struct BtrfsQuotaInfo {
- uint64_t referenced;
- uint64_t exclusive;
- uint64_t referenced_max;
- uint64_t exclusive_max;
-} BtrfsQuotaInfo;
-
-typedef enum BtrfsSnapshotFlags {
- BTRFS_SNAPSHOT_FALLBACK_COPY = 1 << 0, /* If the source isn't a subvolume, reflink everything */
- BTRFS_SNAPSHOT_READ_ONLY = 1 << 1,
- BTRFS_SNAPSHOT_RECURSIVE = 1 << 2,
- BTRFS_SNAPSHOT_QUOTA = 1 << 3,
- BTRFS_SNAPSHOT_FALLBACK_DIRECTORY = 1 << 4, /* If the destination doesn't support subvolumes, reflink/copy instead */
- BTRFS_SNAPSHOT_FALLBACK_IMMUTABLE = 1 << 5, /* When we can't create a subvolume, use the FS_IMMUTABLE attribute for indicating read-only */
- BTRFS_SNAPSHOT_SIGINT = 1 << 6, /* Check for SIGINT regularly, and return EINTR if seen */
-} BtrfsSnapshotFlags;
-
-typedef enum BtrfsRemoveFlags {
- BTRFS_REMOVE_RECURSIVE = 1 << 0,
- BTRFS_REMOVE_QUOTA = 1 << 1,
-} BtrfsRemoveFlags;
-
-int btrfs_is_subvol_fd(int fd);
-int btrfs_is_subvol(const char *path);
-
-int btrfs_reflink(int infd, int outfd);
-int btrfs_clone_range(int infd, uint64_t in_offset, int ofd, uint64_t out_offset, uint64_t sz);
-
-int btrfs_get_block_device_fd(int fd, dev_t *dev);
-int btrfs_get_block_device(const char *path, dev_t *dev);
-
-int btrfs_defrag(const char *p);
-
-int btrfs_quota_enable_fd(int fd, bool b);
-int btrfs_quota_enable(const char *path, bool b);
-
-int btrfs_quota_scan_start(int fd);
-int btrfs_quota_scan_wait(int fd);
-int btrfs_quota_scan_ongoing(int fd);
-
-int btrfs_subvol_make(const char *path);
-int btrfs_subvol_make_fd(int fd, const char *subvolume);
-
-int btrfs_subvol_make_fallback(const char *path, mode_t);
-
-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);
-static inline int btrfs_subvol_snapshot_fd(int old_fd, const char *new_path, BtrfsSnapshotFlags flags) {
- return btrfs_subvol_snapshot_fd_full(old_fd, new_path, flags, NULL, NULL, NULL);
-}
-
-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);
-static inline int btrfs_subvol_snapshot(const char *old_path, const char *new_path, BtrfsSnapshotFlags flags) {
- return btrfs_subvol_snapshot_full(old_path, new_path, flags, NULL, NULL, NULL);
-}
-
-int btrfs_subvol_remove(const char *path, BtrfsRemoveFlags flags);
-int btrfs_subvol_remove_fd(int fd, const char *subvolume, BtrfsRemoveFlags flags);
-
-int btrfs_subvol_set_read_only_fd(int fd, bool b);
-int btrfs_subvol_set_read_only(const char *path, bool b);
-int btrfs_subvol_get_read_only_fd(int fd);
-
-int btrfs_subvol_get_id(int fd, const char *subvolume, uint64_t *ret);
-int btrfs_subvol_get_id_fd(int fd, uint64_t *ret);
-int btrfs_subvol_get_parent(int fd, uint64_t subvol_id, uint64_t *ret);
-
-int btrfs_subvol_get_info_fd(int fd, uint64_t subvol_id, BtrfsSubvolInfo *info);
-
-int btrfs_subvol_find_subtree_qgroup(int fd, uint64_t subvol_id, uint64_t *ret);
-
-int btrfs_subvol_get_subtree_quota(const char *path, uint64_t subvol_id, BtrfsQuotaInfo *quota);
-int btrfs_subvol_get_subtree_quota_fd(int fd, uint64_t subvol_id, BtrfsQuotaInfo *quota);
-
-int btrfs_subvol_set_subtree_quota_limit(const char *path, uint64_t subvol_id, uint64_t referenced_max);
-int btrfs_subvol_set_subtree_quota_limit_fd(int fd, uint64_t subvol_id, uint64_t referenced_max);
-
-int btrfs_subvol_auto_qgroup_fd(int fd, uint64_t subvol_id, bool new_qgroup);
-int btrfs_subvol_auto_qgroup(const char *path, uint64_t subvol_id, bool create_intermediary_qgroup);
-
-int btrfs_qgroupid_make(uint64_t level, uint64_t id, uint64_t *ret);
-int btrfs_qgroupid_split(uint64_t qgroupid, uint64_t *level, uint64_t *id);
-
-int btrfs_qgroup_create(int fd, uint64_t qgroupid);
-int btrfs_qgroup_destroy(int fd, uint64_t qgroupid);
-int btrfs_qgroup_destroy_recursive(int fd, uint64_t qgroupid);
-
-int btrfs_qgroup_set_limit_fd(int fd, uint64_t qgroupid, uint64_t referenced_max);
-int btrfs_qgroup_set_limit(const char *path, uint64_t qgroupid, uint64_t referenced_max);
-
-int btrfs_qgroup_copy_limits(int fd, uint64_t old_qgroupid, uint64_t new_qgroupid);
-
-int btrfs_qgroup_assign(int fd, uint64_t child, uint64_t parent);
-int btrfs_qgroup_unassign(int fd, uint64_t child, uint64_t parent);
-
-int btrfs_qgroup_find_parents(int fd, uint64_t qgroupid, uint64_t **ret);
-
-int btrfs_qgroup_get_quota_fd(int fd, uint64_t qgroupid, BtrfsQuotaInfo *quota);
-int btrfs_qgroup_get_quota(const char *path, uint64_t qgroupid, BtrfsQuotaInfo *quota);
-
-static inline int btrfs_log_dev_root(int level, int ret, const char *p) {
- return log_full_errno(level, ret,
- "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. "
- "Cannot determine correct backing block device.", p);
-}
-
-static inline bool btrfs_might_be_subvol(const struct stat *st) {
- if (!st)
- return false;
-
- /* Returns true if this 'struct stat' looks like it could refer to a btrfs subvolume. To make a final
- * decision, needs to be combined with an fstatfs() check to see if this is actually btrfs. */
-
- return S_ISDIR(st->st_mode) && st->st_ino == 256;
-}
projects / thirdparty / systemd.git / blobdiff