xref: /openbmc/linux/fs/ext2/xattr_user.c (revision 39f60c1c)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * linux/fs/ext2/xattr_user.c
4  * Handler for extended user attributes.
5  *
6  * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
7  */
8 
9 #include <linux/init.h>
10 #include <linux/string.h>
11 #include "ext2.h"
12 #include "xattr.h"
13 
14 static bool
ext2_xattr_user_list(struct dentry * dentry)15 ext2_xattr_user_list(struct dentry *dentry)
16 {
17 	return test_opt(dentry->d_sb, XATTR_USER);
18 }
19 
20 static int
ext2_xattr_user_get(const struct xattr_handler * handler,struct dentry * unused,struct inode * inode,const char * name,void * buffer,size_t size)21 ext2_xattr_user_get(const struct xattr_handler *handler,
22 		    struct dentry *unused, struct inode *inode,
23 		    const char *name, void *buffer, size_t size)
24 {
25 	if (!test_opt(inode->i_sb, XATTR_USER))
26 		return -EOPNOTSUPP;
27 	return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER,
28 			      name, buffer, size);
29 }
30 
31 static int
ext2_xattr_user_set(const struct xattr_handler * handler,struct mnt_idmap * idmap,struct dentry * unused,struct inode * inode,const char * name,const void * value,size_t size,int flags)32 ext2_xattr_user_set(const struct xattr_handler *handler,
33 		    struct mnt_idmap *idmap,
34 		    struct dentry *unused, struct inode *inode,
35 		    const char *name, const void *value,
36 		    size_t size, int flags)
37 {
38 	if (!test_opt(inode->i_sb, XATTR_USER))
39 		return -EOPNOTSUPP;
40 
41 	return ext2_xattr_set(inode, EXT2_XATTR_INDEX_USER,
42 			      name, value, size, flags);
43 }
44 
45 const struct xattr_handler ext2_xattr_user_handler = {
46 	.prefix	= XATTR_USER_PREFIX,
47 	.list	= ext2_xattr_user_list,
48 	.get	= ext2_xattr_user_get,
49 	.set	= ext2_xattr_user_set,
50 };
51