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/* 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;
int bch2_dirent_validate(struct bch_fs *, struct bkey_s_c,
struct bkey_validate_context);
void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
#define bch2_bkey_ops_dirent ((struct bkey_ops) { \
.key_validate = bch2_dirent_validate, \
.val_to_text = bch2_dirent_to_text, \
.min_val_size = 16, \
})
struct qstr;
struct file;
struct dir_context;
struct bch_fs;
struct bch_hash_info;
struct bch_inode_info;
int bch2_casefold(struct btree_trans *, const struct bch_hash_info *,
const struct qstr *, struct qstr *);
static inline int bch2_maybe_casefold(struct btree_trans *trans,
const struct bch_hash_info *info,
const struct qstr *str, struct qstr *out_cf)
{
if (likely(!info->cf_encoding)) {
*out_cf = *str;
return 0;
} else {
return bch2_casefold(trans, info, str, out_cf);
}
}
struct qstr bch2_dirent_get_name(struct bkey_s_c_dirent d);
static inline unsigned dirent_val_u64s(unsigned len, unsigned cf_len)
{
unsigned bytes = cf_len
? offsetof(struct bch_dirent, d_cf_name_block.d_names) + len + cf_len
: offsetof(struct bch_dirent, d_name) + len;
return DIV_ROUND_UP(bytes, sizeof(u64));
}
int bch2_dirent_read_target(struct btree_trans *, subvol_inum,
struct bkey_s_c_dirent, subvol_inum *);
static inline void dirent_copy_target(struct bkey_i_dirent *dst,
struct bkey_s_c_dirent src)
{
dst->v.d_inum = src.v->d_inum;
dst->v.d_type = src.v->d_type;
}
int bch2_dirent_create_snapshot(struct btree_trans *, u32, u64, u32,
const struct bch_hash_info *, u8,
const struct qstr *, u64, u64 *,
enum btree_iter_update_trigger_flags);
int bch2_dirent_create(struct btree_trans *, subvol_inum,
const struct bch_hash_info *, u8,
const struct qstr *, u64, u64 *, u64 *,
enum btree_iter_update_trigger_flags);
static inline unsigned vfs_d_type(unsigned type)
{
return type == DT_SUBVOL ? DT_DIR : type;
}
enum bch_rename_mode {
BCH_RENAME,
BCH_RENAME_OVERWRITE,
BCH_RENAME_EXCHANGE,
};
int bch2_dirent_rename(struct btree_trans *,
subvol_inum, struct bch_hash_info *, u64 *,
subvol_inum, struct bch_hash_info *, u64 *,
const struct qstr *, subvol_inum *, u64 *,
const struct qstr *, subvol_inum *, u64 *,
enum bch_rename_mode);
int bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *,
subvol_inum, const struct bch_hash_info *,
const struct qstr *, subvol_inum *, unsigned);
u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum,
const struct bch_hash_info *,
const struct qstr *, subvol_inum *);
int bch2_empty_dir_snapshot(struct btree_trans *, u64, u32, u32);
int bch2_empty_dir_trans(struct btree_trans *, subvol_inum);
int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *);
int bch2_fsck_remove_dirent(struct btree_trans *, struct bpos);
#endif /* _BCACHEFS_DIRENT_H */
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