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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-21 01:51:18 +00:00
d296e7b185
reattach_inode() was broken w.r.t. snapshots - we'd lookup the subvolume to look up lost+found, but if we're in an interior node snapshot that didn't make any sense. Instead, this adds a dirent path for creating in a specific snapshot, skipping the subvolume; and we also make sure to create lost+found in the root snapshot, to avoid conflicts with lost+found being created in overlapping snapshots. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_DIRENT_H
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#define _BCACHEFS_DIRENT_H
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#include "str_hash.h"
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enum bkey_invalid_flags;
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extern const struct bch_hash_desc bch2_dirent_hash_desc;
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int bch2_dirent_invalid(struct bch_fs *, struct bkey_s_c,
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enum bkey_invalid_flags, struct printbuf *);
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void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
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#define bch2_bkey_ops_dirent ((struct bkey_ops) { \
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.key_invalid = bch2_dirent_invalid, \
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.val_to_text = bch2_dirent_to_text, \
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.min_val_size = 16, \
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})
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struct qstr;
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struct file;
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struct dir_context;
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struct bch_fs;
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struct bch_hash_info;
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struct bch_inode_info;
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struct qstr bch2_dirent_get_name(struct bkey_s_c_dirent d);
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static inline unsigned dirent_val_u64s(unsigned len)
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{
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return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len,
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sizeof(u64));
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}
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int bch2_dirent_read_target(struct btree_trans *, subvol_inum,
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struct bkey_s_c_dirent, subvol_inum *);
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int bch2_dirent_create_snapshot(struct btree_trans *, u64, u32,
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const struct bch_hash_info *, u8,
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const struct qstr *, u64, u64 *,
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bch_str_hash_flags_t);
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int bch2_dirent_create(struct btree_trans *, subvol_inum,
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const struct bch_hash_info *, u8,
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const struct qstr *, u64, u64 *,
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bch_str_hash_flags_t);
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static inline unsigned vfs_d_type(unsigned type)
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{
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return type == DT_SUBVOL ? DT_DIR : type;
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}
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enum bch_rename_mode {
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BCH_RENAME,
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BCH_RENAME_OVERWRITE,
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BCH_RENAME_EXCHANGE,
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};
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int bch2_dirent_rename(struct btree_trans *,
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subvol_inum, struct bch_hash_info *,
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subvol_inum, struct bch_hash_info *,
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const struct qstr *, subvol_inum *, u64 *,
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const struct qstr *, subvol_inum *, u64 *,
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enum bch_rename_mode);
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int __bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *,
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subvol_inum, const struct bch_hash_info *,
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const struct qstr *, subvol_inum *, unsigned);
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u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum,
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const struct bch_hash_info *,
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const struct qstr *, subvol_inum *);
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int bch2_empty_dir_snapshot(struct btree_trans *, u64, u32);
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int bch2_empty_dir_trans(struct btree_trans *, subvol_inum);
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int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *);
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#endif /* _BCACHEFS_DIRENT_H */
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