c78df5790377d02f7d2dab6c0e30cf26cf99b18d
[releases.git] / xattr_hurd.c
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
15 static bool
16 ext4_xattr_hurd_list(struct dentry *dentry)
17 {
18         return test_opt(dentry->d_sb, XATTR_USER);
19 }
20
21 static int
22 ext4_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
33 static int
34 ext4_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
47 const 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 };