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cf1d6c76 TY |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * xattr.h | |
5 | * | |
6 | * Function prototypes | |
7 | * | |
8 | * Copyright (C) 2008 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #ifndef OCFS2_XATTR_H | |
27 | #define OCFS2_XATTR_H | |
28 | ||
29 | #include <linux/init.h> | |
30 | #include <linux/xattr.h> | |
31 | ||
32 | enum ocfs2_xattr_type { | |
33 | OCFS2_XATTR_INDEX_USER = 1, | |
34 | OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS, | |
35 | OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT, | |
36 | OCFS2_XATTR_INDEX_TRUSTED, | |
37 | OCFS2_XATTR_INDEX_SECURITY, | |
38 | OCFS2_XATTR_MAX | |
39 | }; | |
40 | ||
41 | extern struct xattr_handler ocfs2_xattr_user_handler; | |
42 | extern struct xattr_handler ocfs2_xattr_trusted_handler; | |
43 | ||
44 | extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); | |
45 | extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t); | |
46 | extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *, | |
47 | size_t, int); | |
48 | extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh); | |
49 | extern struct xattr_handler *ocfs2_xattr_handlers[]; | |
50 | ||
0c044f0b TM |
51 | static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb) |
52 | { | |
53 | return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE; | |
54 | } | |
55 | ||
56 | static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb) | |
57 | { | |
58 | return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits); | |
59 | } | |
01225596 TM |
60 | |
61 | static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb) | |
62 | { | |
63 | u16 len = sb->s_blocksize - | |
64 | offsetof(struct ocfs2_xattr_header, xh_entries); | |
65 | ||
66 | return len / sizeof(struct ocfs2_xattr_entry); | |
67 | } | |
cf1d6c76 | 68 | #endif /* OCFS2_XATTR_H */ |