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
16static bool
17ext4_xattr_trusted_list(struct dentry *dentry)
18{
19 return capable(CAP_SYS_ADMIN);
20}
21
22static int
23ext4_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
31static int
32ext4_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
42const 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

source code of linux/fs/ext4/xattr_trusted.c