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 | ext4_xattr_user_list(struct dentry *dentry) |
17 | { |
18 | return test_opt(dentry->d_sb, XATTR_USER); |
19 | } |
20 | |
21 | static int |
22 | 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 | if (!test_opt(inode->i_sb, XATTR_USER)) |
27 | return -EOPNOTSUPP; |
28 | return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER, |
29 | name, buffer, size); |
30 | } |
31 | |
32 | static int |
33 | 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 | if (!test_opt(inode->i_sb, XATTR_USER)) |
40 | return -EOPNOTSUPP; |
41 | 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 | }; |
51 | |