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aa98d7cf KK |
1 | /*-------------------------------------------------------------------------* |
2 | * File: fs/jffs2/xattr_trusted.c | |
3 | * XATTR support on JFFS2 FileSystem | |
4 | * | |
5 | * Implemented by KaiGai Kohei <kaigai@ak.jp.nec.com> | |
6 | * Copyright (C) 2006 NEC Corporation | |
7 | * | |
8 | * For licensing information, see the file 'LICENCE' in the jffs2 directory. | |
9 | *-------------------------------------------------------------------------*/ | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/fs.h> | |
12 | #include <linux/jffs2.h> | |
13 | #include <linux/xattr.h> | |
14 | #include <linux/mtd/mtd.h> | |
15 | #include "nodelist.h" | |
16 | ||
17 | static int jffs2_trusted_getxattr(struct inode *inode, const char *name, | |
18 | void *buffer, size_t size) | |
19 | { | |
20 | if (!strcmp(name, "")) | |
21 | return -EINVAL; | |
22 | return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED, name, buffer, size); | |
23 | } | |
24 | ||
25 | static int jffs2_trusted_setxattr(struct inode *inode, const char *name, const void *buffer, | |
26 | size_t size, int flags) | |
27 | { | |
28 | if (!strcmp(name, "")) | |
29 | return -EINVAL; | |
30 | return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED, name, buffer, size, flags); | |
31 | } | |
32 | ||
33 | static size_t jffs2_trusted_listxattr(struct inode *inode, char *list, size_t list_size, | |
34 | const char *name, size_t name_len) | |
35 | { | |
36 | size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1; | |
37 | ||
38 | if (list && retlen<=list_size) { | |
39 | strcpy(list, XATTR_TRUSTED_PREFIX); | |
40 | strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name); | |
41 | } | |
42 | ||
43 | return retlen; | |
44 | } | |
45 | ||
46 | struct xattr_handler jffs2_trusted_xattr_handler = { | |
47 | .prefix = XATTR_TRUSTED_PREFIX, | |
48 | .list = jffs2_trusted_listxattr, | |
49 | .set = jffs2_trusted_setxattr, | |
50 | .get = jffs2_trusted_getxattr | |
51 | }; |