Root/fs/jffs2/xattr_user.c

1/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright © 2006 NEC Corporation
5 *
6 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
10 */
11
12#include <linux/kernel.h>
13#include <linux/fs.h>
14#include <linux/jffs2.h>
15#include <linux/xattr.h>
16#include <linux/mtd/mtd.h>
17#include "nodelist.h"
18
19static int jffs2_user_getxattr(struct inode *inode, const char *name,
20                   void *buffer, size_t size)
21{
22    if (!strcmp(name, ""))
23        return -EINVAL;
24    return do_jffs2_getxattr(inode, JFFS2_XPREFIX_USER, name, buffer, size);
25}
26
27static int jffs2_user_setxattr(struct inode *inode, const char *name, const void *buffer,
28                   size_t size, int flags)
29{
30    if (!strcmp(name, ""))
31        return -EINVAL;
32    return do_jffs2_setxattr(inode, JFFS2_XPREFIX_USER, name, buffer, size, flags);
33}
34
35static size_t jffs2_user_listxattr(struct inode *inode, char *list, size_t list_size,
36                   const char *name, size_t name_len)
37{
38    size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1;
39
40    if (list && retlen <= list_size) {
41        strcpy(list, XATTR_USER_PREFIX);
42        strcpy(list + XATTR_USER_PREFIX_LEN, name);
43    }
44
45    return retlen;
46}
47
48struct xattr_handler jffs2_user_xattr_handler = {
49    .prefix = XATTR_USER_PREFIX,
50    .list = jffs2_user_listxattr,
51    .set = jffs2_user_setxattr,
52    .get = jffs2_user_getxattr
53};
54

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