1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * linux/fs/ext4/xattr_trusted.c |
4 | * Handler for trusted extended attributes. |
5 | * |
6 | * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> |
7 | */ |
8 | |
9 | #include <linux/string.h> |
10 | #include <linux/capability.h> |
11 | #include <linux/fs.h> |
12 | #include "ext4_jbd2.h" |
13 | #include "ext4.h" |
14 | #include "xattr.h" |
15 | |
16 | static bool |
17 | ext4_xattr_trusted_list(struct dentry *dentry) |
18 | { |
19 | return capable(CAP_SYS_ADMIN); |
20 | } |
21 | |
22 | static int |
23 | ext4_xattr_trusted_get(const struct xattr_handler *handler, |
24 | struct dentry *unused, struct inode *inode, |
25 | const char *name, void *buffer, size_t size) |
26 | { |
27 | return ext4_xattr_get(inode, EXT4_XATTR_INDEX_TRUSTED, |
28 | name, buffer, size); |
29 | } |
30 | |
31 | static int |
32 | ext4_xattr_trusted_set(const struct xattr_handler *handler, |
33 | struct mnt_idmap *idmap, |
34 | struct dentry *unused, struct inode *inode, |
35 | const char *name, const void *value, |
36 | size_t size, int flags) |
37 | { |
38 | return ext4_xattr_set(inode, EXT4_XATTR_INDEX_TRUSTED, |
39 | name, value, size, flags); |
40 | } |
41 | |
42 | const struct xattr_handler ext4_xattr_trusted_handler = { |
43 | .prefix = XATTR_TRUSTED_PREFIX, |
44 | .list = ext4_xattr_trusted_list, |
45 | .get = ext4_xattr_trusted_get, |
46 | .set = ext4_xattr_trusted_set, |
47 | }; |
48 | |