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_invalid(struct bch_fs *, struct bkey_s_c,
10 enum bch_validate_flags, struct printbuf *);
11 void bch2_xattr_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
12
13 #define bch2_bkey_ops_xattr ((struct bkey_ops) { \
14 .key_invalid = bch2_xattr_invalid, \
15 .val_to_text = bch2_xattr_to_text, \
16 .min_val_size = 8, \
17 })
18
19 static inline unsigned xattr_val_u64s(unsigned name_len, unsigned val_len)
20 {
21 return DIV_ROUND_UP(offsetof(struct bch_xattr, x_name) +
22 name_len + val_len, sizeof(u64));
23 }
24
25 #define xattr_val(_xattr) \
26 ((void *) (_xattr)->x_name + (_xattr)->x_name_len)
27
28 struct xattr_search_key {
29 u8 type;
30 struct qstr name;
31 };
32
33 #define X_SEARCH(_type, _name, _len) ((struct xattr_search_key) \
34 { .type = _type, .name = QSTR_INIT(_name, _len) })
35
36 struct dentry;
37 struct xattr_handler;
38 struct bch_hash_info;
39 struct bch_inode_info;
40
41 /* Exported for cmd_migrate.c in tools: */
42 int bch2_xattr_set(struct btree_trans *, subvol_inum,
43 struct bch_inode_unpacked *, const struct bch_hash_info *,
44 const char *, const void *, size_t, int, int);
45
46 ssize_t bch2_xattr_list(struct dentry *, char *, size_t);
47
48 extern const struct xattr_handler *bch2_xattr_handlers[];
49
50 #endif /* _BCACHEFS_XATTR_H */
51
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