1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_XATTR_H
3 #define _BCACHEFS_XATTR_H
4
5 #include "str_hash.h"
6
7 extern const struct bch_hash_desc bch2_xattr_hash_desc;
8
9 int bch2_xattr_validate(struct bch_fs *, struct bkey_s_c, enum bch_validate_flags);
10 void bch2_xattr_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
11
12 #define bch2_bkey_ops_xattr ((struct bkey_ops) { \
13 .key_validate = bch2_xattr_validate, \
14 .val_to_text = bch2_xattr_to_text, \
15 .min_val_size = 8, \
16 })
17
xattr_val_u64s(unsigned name_len,unsigned val_len)18 static inline unsigned xattr_val_u64s(unsigned name_len, unsigned val_len)
19 {
20 return DIV_ROUND_UP(offsetof(struct bch_xattr, x_name) +
21 name_len + val_len, sizeof(u64));
22 }
23
24 #define xattr_val(_xattr) \
25 ((void *) (_xattr)->x_name + (_xattr)->x_name_len)
26
27 struct xattr_search_key {
28 u8 type;
29 struct qstr name;
30 };
31
32 #define X_SEARCH(_type, _name, _len) ((struct xattr_search_key) \
33 { .type = _type, .name = QSTR_INIT(_name, _len) })
34
35 struct dentry;
36 struct xattr_handler;
37 struct bch_hash_info;
38 struct bch_inode_info;
39
40 /* Exported for cmd_migrate.c in tools: */
41 int bch2_xattr_set(struct btree_trans *, subvol_inum,
42 struct bch_inode_unpacked *, const struct bch_hash_info *,
43 const char *, const void *, size_t, int, int);
44
45 ssize_t bch2_xattr_list(struct dentry *, char *, size_t);
46
47 extern const struct xattr_handler *bch2_xattr_handlers[];
48
49 #endif /* _BCACHEFS_XATTR_H */
50