| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _BCACHEFS_XATTR_H |
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| 3 | #define _BCACHEFS_XATTR_H |
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| 4 | |
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| 5 | #include "str_hash.h" |
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| 6 | |
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| 7 | extern const struct bch_hash_desc bch2_xattr_hash_desc; |
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| 8 | |
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| 9 | int bch2_xattr_invalid(struct bch_fs *, struct bkey_s_c, |
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| 10 | enum bkey_invalid_flags, struct printbuf *); |
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| 11 | void bch2_xattr_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); |
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| 12 | |
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| 13 | #define bch2_bkey_ops_xattr ((struct bkey_ops) { \ |
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| 14 | .key_invalid = bch2_xattr_invalid, \ |
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| 15 | .val_to_text = bch2_xattr_to_text, \ |
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| 16 | .min_val_size = 8, \ |
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| 17 | }) |
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| 18 | |
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| 19 | static inline unsigned xattr_val_u64s(unsigned name_len, unsigned val_len) |
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| 20 | { |
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| 21 | return DIV_ROUND_UP(offsetof(struct bch_xattr, x_name) + |
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| 22 | name_len + val_len, sizeof(u64)); |
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| 23 | } |
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| 24 | |
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| 25 | #define xattr_val(_xattr) \ |
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| 26 | ((void *) (_xattr)->x_name + (_xattr)->x_name_len) |
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| 27 | |
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| 28 | struct xattr_search_key { |
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| 29 | u8 type; |
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| 30 | struct qstr name; |
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| 31 | }; |
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| 32 | |
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| 33 | #define X_SEARCH(_type, _name, _len) ((struct xattr_search_key) \ |
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| 34 | { .type = _type, .name = QSTR_INIT(_name, _len) }) |
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| 35 | |
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| 36 | struct dentry; |
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| 37 | struct xattr_handler; |
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| 38 | struct bch_hash_info; |
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| 39 | struct bch_inode_info; |
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| 40 | |
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| 41 | /* Exported for cmd_migrate.c in tools: */ |
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| 42 | int bch2_xattr_set(struct btree_trans *, subvol_inum, |
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| 43 | struct bch_inode_unpacked *, const struct bch_hash_info *, |
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| 44 | const char *, const void *, size_t, int, int); |
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| 45 | |
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| 46 | ssize_t bch2_xattr_list(struct dentry *, char *, size_t); |
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| 47 | |
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| 48 | extern const struct xattr_handler *bch2_xattr_handlers[]; |
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| 49 | |
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| 50 | #endif /* _BCACHEFS_XATTR_H */ |
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| 51 | |
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