xref: /openbmc/linux/fs/ext2/xattr_user.c (revision 017cdefe)
1  // SPDX-License-Identifier: GPL-2.0
2  /*
3   * linux/fs/ext2/xattr_user.c
4   * Handler for extended user attributes.
5   *
6   * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
7   */
8  
9  #include <linux/init.h>
10  #include <linux/string.h>
11  #include "ext2.h"
12  #include "xattr.h"
13  
14  static bool
15  ext2_xattr_user_list(struct dentry *dentry)
16  {
17  	return test_opt(dentry->d_sb, XATTR_USER);
18  }
19  
20  static int
21  ext2_xattr_user_get(const struct xattr_handler *handler,
22  		    struct dentry *unused, struct inode *inode,
23  		    const char *name, void *buffer, size_t size)
24  {
25  	if (!test_opt(inode->i_sb, XATTR_USER))
26  		return -EOPNOTSUPP;
27  	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER,
28  			      name, buffer, size);
29  }
30  
31  static int
32  ext2_xattr_user_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  	if (!test_opt(inode->i_sb, XATTR_USER))
39  		return -EOPNOTSUPP;
40  
41  	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_USER,
42  			      name, value, size, flags);
43  }
44  
45  const struct xattr_handler ext2_xattr_user_handler = {
46  	.prefix	= XATTR_USER_PREFIX,
47  	.list	= ext2_xattr_user_list,
48  	.get	= ext2_xattr_user_get,
49  	.set	= ext2_xattr_user_set,
50  };
51