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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