1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * linux/fs/ext4/xattr_hurd.c
 4 * Handler for extended gnu attributes for the Hurd.
 5 *
 6 * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
 7 * Copyright (C) 2020 by Jan (janneke) Nieuwenhuizen, <janneke@gnu.org>
 8 */
 9
10#include <linux/init.h>
11#include <linux/string.h>
12#include "ext4.h"
13#include "xattr.h"
14
15static bool
16ext4_xattr_hurd_list(struct dentry *dentry)
17{
18	return test_opt(dentry->d_sb, XATTR_USER);
19}
20
21static int
22ext4_xattr_hurd_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
29	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_HURD,
30			      name, buffer, size);
31}
32
33static int
34ext4_xattr_hurd_set(const struct xattr_handler *handler,
35		    struct user_namespace *mnt_userns,
36		    struct dentry *unused, struct inode *inode,
37		    const char *name, const void *value,
38		    size_t size, int flags)
39{
40	if (!test_opt(inode->i_sb, XATTR_USER))
41		return -EOPNOTSUPP;
42
43	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_HURD,
44			      name, value, size, flags);
45}
46
47const struct xattr_handler ext4_xattr_hurd_handler = {
48	.prefix	= XATTR_HURD_PREFIX,
49	.list	= ext4_xattr_hurd_list,
50	.get	= ext4_xattr_hurd_get,
51	.set	= ext4_xattr_hurd_set,
52};