[linux-block.git] / fs / bcachefs / dirent.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_DIRENT_H
#define _BCACHEFS_DIRENT_H

#include "str_hash.h"

extern const struct bch_hash_desc bch2_dirent_hash_desc;

const char *bch2_dirent_invalid(const struct bch_fs *, struct bkey_s_c);
void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);

#define bch2_bkey_ops_dirent (struct bkey_ops) {	\
	.key_invalid	= bch2_dirent_invalid,		\
	.val_to_text	= bch2_dirent_to_text,		\
}

struct qstr;
struct file;
struct dir_context;
struct bch_fs;
struct bch_hash_info;
struct bch_inode_info;

unsigned bch2_dirent_name_bytes(struct bkey_s_c_dirent);

static inline unsigned dirent_val_u64s(unsigned len)
{
	return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len,
			    sizeof(u64));
}

int bch2_dirent_create(struct btree_trans *, u64,
		       const struct bch_hash_info *, u8,
		       const struct qstr *, u64, int);

int bch2_dirent_delete_at(struct btree_trans *,
			  const struct bch_hash_info *,
			  struct btree_iter *);

enum bch_rename_mode {
	BCH_RENAME,
	BCH_RENAME_OVERWRITE,
	BCH_RENAME_EXCHANGE,
};

int bch2_dirent_rename(struct btree_trans *,
		       u64, struct bch_hash_info *,
		       u64, struct bch_hash_info *,
		       const struct qstr *, u64 *,
		       const struct qstr *, u64 *,
		       enum bch_rename_mode);

struct btree_iter *
__bch2_dirent_lookup_trans(struct btree_trans *, u64,
			   const struct bch_hash_info *,
			   const struct qstr *, unsigned);
u64 bch2_dirent_lookup(struct bch_fs *, u64, const struct bch_hash_info *,
		       const struct qstr *);

int bch2_empty_dir_trans(struct btree_trans *, u64);
int bch2_readdir(struct bch_fs *, u64, struct dir_context *);

#endif /* _BCACHEFS_DIRENT_H */
Commit	Line	Data
1c6fdbd8 KO	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef _BCACHEFS_DIRENT_H
	3	#define _BCACHEFS_DIRENT_H
	4
	5	#include "str_hash.h"
	6
	7	extern const struct bch_hash_desc bch2_dirent_hash_desc;
	8
	9	const char bch2_dirent_invalid(const struct bch_fs , struct bkey_s_c);
319f9ac3	10	void bch2_dirent_to_text(struct printbuf , struct bch_fs , struct bkey_s_c);
1c6fdbd8	11
26609b61	12	#define bch2_bkey_ops_dirent (struct bkey_ops) { \
1c6fdbd8 KO	13	.key_invalid = bch2_dirent_invalid, \
	14	.val_to_text = bch2_dirent_to_text, \
	15	}
	16
	17	struct qstr;
	18	struct file;
	19	struct dir_context;
	20	struct bch_fs;
	21	struct bch_hash_info;
	22	struct bch_inode_info;
	23
	24	unsigned bch2_dirent_name_bytes(struct bkey_s_c_dirent);
	25
741daa5b KO	26	static inline unsigned dirent_val_u64s(unsigned len)
	27	{
	28	return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len,
	29	sizeof(u64));
	30	}
	31
96385742 KO	32	int bch2_dirent_create(struct btree_trans *, u64,
	33	const struct bch_hash_info *, u8,
	34	const struct qstr *, u64, int);
	35
	36	int bch2_dirent_delete_at(struct btree_trans *,
	37	const struct bch_hash_info *,
	38	struct btree_iter *);
1c6fdbd8 KO	39
	40	enum bch_rename_mode {
	41	BCH_RENAME,
	42	BCH_RENAME_OVERWRITE,
	43	BCH_RENAME_EXCHANGE,
	44	};
	45
	46	int bch2_dirent_rename(struct btree_trans *,
96385742 KO	47	u64, struct bch_hash_info *,
	48	u64, struct bch_hash_info *,
	49	const struct qstr , u64 ,
	50	const struct qstr , u64 ,
1c6fdbd8 KO	51	enum bch_rename_mode);
1c6fdbd8 KO	52
96385742 KO	53	struct btree_iter *
	54	__bch2_dirent_lookup_trans(struct btree_trans *, u64,
	55	const struct bch_hash_info *,
63fbf458	56	const struct qstr *, unsigned);
1c6fdbd8 KO	57	u64 bch2_dirent_lookup(struct bch_fs , u64, const struct bch_hash_info ,
	58	const struct qstr *);
	59
6bd13057	60	int bch2_empty_dir_trans(struct btree_trans *, u64);
96385742	61	int bch2_readdir(struct bch_fs , u64, struct dir_context );
1c6fdbd8 KO	62
1c6fdbd8 KO	63	#endif /* _BCACHEFS_DIRENT_H */