xattr_user.c revision 17093991af4995c4b93f6d8ac63aab68fcd9e1be 
1#include "reiserfs.h"
2#include <linux/errno.h>
3#include <linux/fs.h>
4#include <linux/pagemap.h>
5#include <linux/xattr.h>
6#include "xattr.h"
7#include <linux/uaccess.h>
8
9static int
10user_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
11	 int handler_flags)
12{
13
14	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
15		return -EINVAL;
16	if (!reiserfs_xattrs_user(dentry->d_sb))
17		return -EOPNOTSUPP;
18	return reiserfs_xattr_get(dentry->d_inode, name, buffer, size);
19}
20
21static int
22user_set(struct dentry *dentry, const char *name, const void *buffer,
23	 size_t size, int flags, int handler_flags)
24{
25	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
26		return -EINVAL;
27
28	if (!reiserfs_xattrs_user(dentry->d_sb))
29		return -EOPNOTSUPP;
30	return reiserfs_xattr_set(dentry->d_inode, name, buffer, size, flags);
31}
32
33static size_t user_list(struct dentry *dentry, char *list, size_t list_size,
34			const char *name, size_t name_len, int handler_flags)
35{
36	const size_t len = name_len + 1;
37
38	if (!reiserfs_xattrs_user(dentry->d_sb))
39		return 0;
40	if (list && len <= list_size) {
41		memcpy(list, name, name_len);
42		list[name_len] = '\0';
43	}
44	return len;
45}
46
47const struct xattr_handler reiserfs_xattr_user_handler = {
48	.prefix = XATTR_USER_PREFIX,
49	.get = user_get,
50	.set = user_set,
51	.list = user_list,
52};
53