1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* xattr.h
*
* Copyright (C) 2004, 2008 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#ifndef OCFS2_XATTR_H
#define OCFS2_XATTR_H
#include <linux/init.h>
#include <linux/xattr.h>
enum ocfs2_xattr_type {
OCFS2_XATTR_INDEX_USER = 1,
OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
OCFS2_XATTR_INDEX_TRUSTED,
OCFS2_XATTR_INDEX_SECURITY,
OCFS2_XATTR_MAX
};
extern struct xattr_handler ocfs2_xattr_user_handler;
extern struct xattr_handler ocfs2_xattr_trusted_handler;
extern ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
extern int ocfs2_xattr_get(struct inode *, int, const char *, void *, size_t);
extern int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
size_t, int);
extern int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh);
extern struct xattr_handler *ocfs2_xattr_handlers[];
static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
{
return (1 << osb->s_clustersize_bits) / OCFS2_XATTR_BUCKET_SIZE;
}
static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb)
{
return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits);
}
static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
{
u16 len = sb->s_blocksize -
offsetof(struct ocfs2_xattr_header, xh_entries);
return len / sizeof(struct ocfs2_xattr_entry);
}
#endif /* OCFS2_XATTR_H */
|
