xattr_user.c
1.51 KB
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
/*
* JFFS2 -- Journalling Flash File System, Version 2.
*
* Copyright © 2006 NEC Corporation
*
* Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
*/
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/jffs2.h>
#include <linux/xattr.h>
#include <linux/mtd/mtd.h>
#include "nodelist.h"
static int jffs2_user_getxattr(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
if (!strcmp(name, ""))
return -EINVAL;
return do_jffs2_getxattr(d_inode(dentry), JFFS2_XPREFIX_USER,
name, buffer, size);
}
static int jffs2_user_setxattr(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
const void *buffer, size_t size, int flags)
{
if (!strcmp(name, ""))
return -EINVAL;
return do_jffs2_setxattr(d_inode(dentry), JFFS2_XPREFIX_USER,
name, buffer, size, flags);
}
static size_t jffs2_user_listxattr(const struct xattr_handler *handler,
struct dentry *dentry, char *list,
size_t list_size, const char *name,
size_t name_len)
{
size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1;
if (list && retlen <= list_size) {
strcpy(list, XATTR_USER_PREFIX);
strcpy(list + XATTR_USER_PREFIX_LEN, name);
}
return retlen;
}
const struct xattr_handler jffs2_user_xattr_handler = {
.prefix = XATTR_USER_PREFIX,
.list = jffs2_user_listxattr,
.set = jffs2_user_setxattr,
.get = jffs2_user_getxattr
};