Line data Source code
1 : // SPDX-License-Identifier: GPL-2.0
2 : /*
3 : * linux/fs/ext4/xattr_user.c
4 : * Handler for extended user attributes.
5 : *
6 : * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
7 : */
8 :
9 : #include <linux/string.h>
10 : #include <linux/fs.h>
11 : #include "ext4_jbd2.h"
12 : #include "ext4.h"
13 : #include "xattr.h"
14 :
15 : static bool
16 0 : ext4_xattr_user_list(struct dentry *dentry)
17 : {
18 0 : return test_opt(dentry->d_sb, XATTR_USER);
19 : }
20 :
21 : static int
22 0 : ext4_xattr_user_get(const struct xattr_handler *handler,
23 : struct dentry *unused, struct inode *inode,
24 : const char *name, void *buffer, size_t size)
25 : {
26 0 : if (!test_opt(inode->i_sb, XATTR_USER))
27 : return -EOPNOTSUPP;
28 0 : return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER,
29 : name, buffer, size);
30 : }
31 :
32 : static int
33 0 : ext4_xattr_user_set(const struct xattr_handler *handler,
34 : struct mnt_idmap *idmap,
35 : struct dentry *unused, struct inode *inode,
36 : const char *name, const void *value,
37 : size_t size, int flags)
38 : {
39 0 : if (!test_opt(inode->i_sb, XATTR_USER))
40 : return -EOPNOTSUPP;
41 0 : return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,
42 : name, value, size, flags);
43 : }
44 :
45 : const struct xattr_handler ext4_xattr_user_handler = {
46 : .prefix = XATTR_USER_PREFIX,
47 : .list = ext4_xattr_user_list,
48 : .get = ext4_xattr_user_get,
49 : .set = ext4_xattr_user_set,
50 : };
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