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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BCACHEFS_DIRENT_H3#define _BCACHEFS_DIRENT_H4 5#include "str_hash.h"6 7enum bch_validate_flags;8extern const struct bch_hash_desc bch2_dirent_hash_desc;9 10int bch2_dirent_validate(struct bch_fs *, struct bkey_s_c, enum bch_validate_flags);11void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);12 13#define bch2_bkey_ops_dirent ((struct bkey_ops) { \14 .key_validate = bch2_dirent_validate, \15 .val_to_text = bch2_dirent_to_text, \16 .min_val_size = 16, \17})18 19struct qstr;20struct file;21struct dir_context;22struct bch_fs;23struct bch_hash_info;24struct bch_inode_info;25 26struct qstr bch2_dirent_get_name(struct bkey_s_c_dirent d);27 28static inline unsigned dirent_val_u64s(unsigned len)29{30 return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len,31 sizeof(u64));32}33 34int bch2_dirent_read_target(struct btree_trans *, subvol_inum,35 struct bkey_s_c_dirent, subvol_inum *);36 37static inline void dirent_copy_target(struct bkey_i_dirent *dst,38 struct bkey_s_c_dirent src)39{40 dst->v.d_inum = src.v->d_inum;41 dst->v.d_type = src.v->d_type;42}43 44int bch2_dirent_create_snapshot(struct btree_trans *, u32, u64, u32,45 const struct bch_hash_info *, u8,46 const struct qstr *, u64, u64 *,47 enum btree_iter_update_trigger_flags);48int bch2_dirent_create(struct btree_trans *, subvol_inum,49 const struct bch_hash_info *, u8,50 const struct qstr *, u64, u64 *,51 enum btree_iter_update_trigger_flags);52 53static inline unsigned vfs_d_type(unsigned type)54{55 return type == DT_SUBVOL ? DT_DIR : type;56}57 58enum bch_rename_mode {59 BCH_RENAME,60 BCH_RENAME_OVERWRITE,61 BCH_RENAME_EXCHANGE,62};63 64int bch2_dirent_rename(struct btree_trans *,65 subvol_inum, struct bch_hash_info *,66 subvol_inum, struct bch_hash_info *,67 const struct qstr *, subvol_inum *, u64 *,68 const struct qstr *, subvol_inum *, u64 *,69 enum bch_rename_mode);70 71int bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *,72 subvol_inum, const struct bch_hash_info *,73 const struct qstr *, subvol_inum *, unsigned);74u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum,75 const struct bch_hash_info *,76 const struct qstr *, subvol_inum *);77 78int bch2_empty_dir_snapshot(struct btree_trans *, u64, u32, u32);79int bch2_empty_dir_trans(struct btree_trans *, subvol_inum);80int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *);81 82#endif /* _BCACHEFS_DIRENT_H */83