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
ext4_xattr_hurd_list(struct dentry * dentry)16 ext4_xattr_hurd_list(struct dentry *dentry)
17 {
18 return test_opt(dentry->d_sb, XATTR_USER);
19 }
20
21 static int
ext4_xattr_hurd_get(const struct xattr_handler * handler,struct dentry * unused,struct inode * inode,const char * name,void * buffer,size_t size)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
ext4_xattr_hurd_set(const struct xattr_handler * handler,struct user_namespace * mnt_userns,struct dentry * unused,struct inode * inode,const char * name,const void * value,size_t size,int flags)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 };
53