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KaiGai Kohei652ecc22006-05-13 15:18:27 +09001/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +09003 *
David Woodhousec00c3102007-04-25 14:16:47 +01004 * Copyright © 2006 NEC Corporation
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +09005 *
KaiGai Kohei652ecc22006-05-13 15:18:27 +09006 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
10 */
David Woodhousec00c3102007-04-25 14:16:47 +010011
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090012#include <linux/kernel.h>
13#include <linux/fs.h>
14#include <linux/jffs2.h>
15#include <linux/xattr.h>
16#include <linux/mtd/mtd.h>
17#include "nodelist.h"
18
Christoph Hellwig431547b2009-11-13 09:52:56 +000019static int jffs2_trusted_getxattr(struct dentry *dentry, const char *name,
20 void *buffer, size_t size, int type)
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090021{
22 if (!strcmp(name, ""))
23 return -EINVAL;
David Howells2b0143b2015-03-17 22:25:59 +000024 return do_jffs2_getxattr(d_inode(dentry), JFFS2_XPREFIX_TRUSTED,
Christoph Hellwig431547b2009-11-13 09:52:56 +000025 name, buffer, size);
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090026}
27
Christoph Hellwig431547b2009-11-13 09:52:56 +000028static int jffs2_trusted_setxattr(struct dentry *dentry, const char *name,
29 const void *buffer, size_t size, int flags, int type)
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090030{
31 if (!strcmp(name, ""))
32 return -EINVAL;
David Howells2b0143b2015-03-17 22:25:59 +000033 return do_jffs2_setxattr(d_inode(dentry), JFFS2_XPREFIX_TRUSTED,
Christoph Hellwig431547b2009-11-13 09:52:56 +000034 name, buffer, size, flags);
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090035}
36
Christoph Hellwig431547b2009-11-13 09:52:56 +000037static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list,
38 size_t list_size, const char *name, size_t name_len, int type)
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090039{
40 size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1;
41
42 if (list && retlen<=list_size) {
43 strcpy(list, XATTR_TRUSTED_PREFIX);
44 strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name);
45 }
46
47 return retlen;
48}
49
Stephen Hemminger365f0cb2010-05-13 17:53:21 -070050const struct xattr_handler jffs2_trusted_xattr_handler = {
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090051 .prefix = XATTR_TRUSTED_PREFIX,
52 .list = jffs2_trusted_listxattr,
53 .set = jffs2_trusted_setxattr,
54 .get = jffs2_trusted_getxattr
55};