Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
[cascardo/linux.git] / fs / ext2 / xattr_user.c
1 /*
2  * linux/fs/ext2/xattr_user.c
3  * Handler for extended user attributes.
4  *
5  * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
6  */
7
8 #include <linux/init.h>
9 #include <linux/string.h>
10 #include "ext2.h"
11 #include "xattr.h"
12
13 static bool
14 ext2_xattr_user_list(struct dentry *dentry)
15 {
16         return test_opt(dentry->d_sb, XATTR_USER);
17 }
18
19 static int
20 ext2_xattr_user_get(const struct xattr_handler *handler,
21                     struct dentry *unused, struct inode *inode,
22                     const char *name, void *buffer, size_t size)
23 {
24         if (!test_opt(inode->i_sb, XATTR_USER))
25                 return -EOPNOTSUPP;
26         return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER,
27                               name, buffer, size);
28 }
29
30 static int
31 ext2_xattr_user_set(const struct xattr_handler *handler,
32                     struct dentry *dentry, const char *name,
33                     const void *value, size_t size, int flags)
34 {
35         if (!test_opt(dentry->d_sb, XATTR_USER))
36                 return -EOPNOTSUPP;
37
38         return ext2_xattr_set(d_inode(dentry), EXT2_XATTR_INDEX_USER,
39                               name, value, size, flags);
40 }
41
42 const struct xattr_handler ext2_xattr_user_handler = {
43         .prefix = XATTR_USER_PREFIX,
44         .list   = ext2_xattr_user_list,
45         .get    = ext2_xattr_user_get,
46         .set    = ext2_xattr_user_set,
47 };