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1c6fdbd8f2
Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write filesystem with every feature you could possibly want. Website: https://bcachefs.org Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_XATTR_H
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#define _BCACHEFS_XATTR_H
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#include "str_hash.h"
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extern const struct bch_hash_desc bch2_xattr_hash_desc;
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const char *bch2_xattr_invalid(const struct bch_fs *, struct bkey_s_c);
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void bch2_xattr_to_text(struct bch_fs *, char *, size_t, struct bkey_s_c);
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#define bch2_bkey_xattr_ops (struct bkey_ops) { \
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.key_invalid = bch2_xattr_invalid, \
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.val_to_text = bch2_xattr_to_text, \
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}
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static inline unsigned xattr_val_u64s(unsigned name_len, unsigned val_len)
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{
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return DIV_ROUND_UP(offsetof(struct bch_xattr, x_name) +
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name_len + val_len, sizeof(u64));
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}
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#define xattr_val(_xattr) \
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((void *) (_xattr)->x_name + (_xattr)->x_name_len)
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struct xattr_search_key {
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u8 type;
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struct qstr name;
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};
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#define X_SEARCH(_type, _name, _len) ((struct xattr_search_key) \
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{ .type = _type, .name = QSTR_INIT(_name, _len) })
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struct dentry;
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struct xattr_handler;
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struct bch_hash_info;
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struct bch_inode_info;
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int bch2_xattr_get(struct bch_fs *, struct bch_inode_info *,
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const char *, void *, size_t, int);
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int bch2_xattr_set(struct btree_trans *, u64, const struct bch_hash_info *,
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const char *, const void *, size_t, int, int);
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ssize_t bch2_xattr_list(struct dentry *, char *, size_t);
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extern const struct xattr_handler *bch2_xattr_handlers[];
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#endif /* _BCACHEFS_XATTR_H */
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