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 dentry *unused, struct inode *inode,
34		       const char *name, const void *value,
35		       size_t size, int flags)
36{
37	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_TRUSTED,
38			      name, value, size, flags);
39}
40
41const struct xattr_handler ext4_xattr_trusted_handler = {
42	.prefix	= XATTR_TRUSTED_PREFIX,
43	.list	= ext4_xattr_trusted_list,
44	.get	= ext4_xattr_trusted_get,
45	.set	= ext4_xattr_trusted_set,
46};
47