[linux-block.git] / fs / btrfs / dir-item.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_DIR_ITEM_H
#define BTRFS_DIR_ITEM_H

#include <linux/crc32c.h>

struct fscrypt_str;

int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
			  const struct fscrypt_str *name);
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
			  const struct fscrypt_str *name, struct btrfs_inode *dir,
			  struct btrfs_key *location, u8 type, u64 index);
struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
					     struct btrfs_root *root,
					     struct btrfs_path *path, u64 dir,
					     const struct fscrypt_str *name, int mod);
struct btrfs_dir_item *btrfs_lookup_dir_index_item(
			struct btrfs_trans_handle *trans,
			struct btrfs_root *root,
			struct btrfs_path *path, u64 dir,
			u64 index, const struct fscrypt_str *name, int mod);
struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root,
			    struct btrfs_path *path, u64 dirid,
			    const struct fscrypt_str *name);
int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
			      struct btrfs_root *root,
			      struct btrfs_path *path,
			      struct btrfs_dir_item *di);
int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
			    struct btrfs_root *root,
			    struct btrfs_path *path, u64 objectid,
			    const char *name, u16 name_len,
			    const void *data, u16 data_len);
struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
					  struct btrfs_root *root,
					  struct btrfs_path *path, u64 dir,
					  const char *name, u16 name_len,
					  int mod);
struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
						 struct btrfs_path *path,
						 const char *name,
						 int name_len);

static inline u64 btrfs_name_hash(const char *name, int len)
{
       return crc32c((u32)~1, name, len);
}

#endif
Commit	Line	Data
f2b39277 JB	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#ifndef BTRFS_DIR_ITEM_H
	4	#define BTRFS_DIR_ITEM_H
	5
1b9e6a15 JB	6	#include <linux/crc32c.h>
1b9e6a15 JB	7
04cc63d1 JB	8	struct fscrypt_str;
04cc63d1 JB	9
f2b39277 JB	10	int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
	11	const struct fscrypt_str *name);
	12	int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
	13	const struct fscrypt_str name, struct btrfs_inode dir,
	14	struct btrfs_key *location, u8 type, u64 index);
	15	struct btrfs_dir_item btrfs_lookup_dir_item(struct btrfs_trans_handle trans,
	16	struct btrfs_root *root,
	17	struct btrfs_path *path, u64 dir,
	18	const struct fscrypt_str *name, int mod);
	19	struct btrfs_dir_item *btrfs_lookup_dir_index_item(
	20	struct btrfs_trans_handle *trans,
	21	struct btrfs_root *root,
	22	struct btrfs_path *path, u64 dir,
	23	u64 index, const struct fscrypt_str *name, int mod);
	24	struct btrfs_dir_item btrfs_search_dir_index_item(struct btrfs_root root,
	25	struct btrfs_path *path, u64 dirid,
	26	const struct fscrypt_str *name);
	27	int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
	28	struct btrfs_root *root,
	29	struct btrfs_path *path,
	30	struct btrfs_dir_item *di);
	31	int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
	32	struct btrfs_root *root,
	33	struct btrfs_path *path, u64 objectid,
	34	const char *name, u16 name_len,
	35	const void *data, u16 data_len);
	36	struct btrfs_dir_item btrfs_lookup_xattr(struct btrfs_trans_handle trans,
	37	struct btrfs_root *root,
	38	struct btrfs_path *path, u64 dir,
	39	const char *name, u16 name_len,
	40	int mod);
	41	struct btrfs_dir_item btrfs_match_dir_item_name(struct btrfs_fs_info fs_info,
	42	struct btrfs_path *path,
	43	const char *name,
	44	int name_len);
	45
1b9e6a15 JB	46	static inline u64 btrfs_name_hash(const char *name, int len)
	47	{
	48	return crc32c((u32)~1, name, len);
	49	}
	50
f2b39277	51	#endif