1 /*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright © 2006 NEC Corporation
5 *
6 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
10 */
11
12 #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
jffs2_trusted_getxattr(const struct xattr_handler * handler,struct dentry * unused,struct inode * inode,const char * name,void * buffer,size_t size)19 static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
20 struct dentry *unused, struct inode *inode,
21 const char *name, void *buffer, size_t size)
22 {
23 return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED,
24 name, buffer, size);
25 }
26
jffs2_trusted_setxattr(const struct xattr_handler * handler,struct mnt_idmap * idmap,struct dentry * unused,struct inode * inode,const char * name,const void * buffer,size_t size,int flags)27 static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
28 struct mnt_idmap *idmap,
29 struct dentry *unused, struct inode *inode,
30 const char *name, const void *buffer,
31 size_t size, int flags)
32 {
33 return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED,
34 name, buffer, size, flags);
35 }
36
jffs2_trusted_listxattr(struct dentry * dentry)37 static bool jffs2_trusted_listxattr(struct dentry *dentry)
38 {
39 return capable(CAP_SYS_ADMIN);
40 }
41
42 const struct xattr_handler jffs2_trusted_xattr_handler = {
43 .prefix = XATTR_TRUSTED_PREFIX,
44 .list = jffs2_trusted_listxattr,
45 .set = jffs2_trusted_setxattr,
46 .get = jffs2_trusted_getxattr
47 };
48