1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/fs/ext2/xattr_user.c
4*4882a593Smuzhiyun * Handler for extended user attributes.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/init.h>
10*4882a593Smuzhiyun #include <linux/string.h>
11*4882a593Smuzhiyun #include "ext2.h"
12*4882a593Smuzhiyun #include "xattr.h"
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun static bool
ext2_xattr_user_list(struct dentry * dentry)15*4882a593Smuzhiyun ext2_xattr_user_list(struct dentry *dentry)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun return test_opt(dentry->d_sb, XATTR_USER);
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun 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,int flags)21*4882a593Smuzhiyun ext2_xattr_user_get(const struct xattr_handler *handler,
22*4882a593Smuzhiyun struct dentry *unused, struct inode *inode,
23*4882a593Smuzhiyun const char *name, void *buffer, size_t size, int flags)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun if (!test_opt(inode->i_sb, XATTR_USER))
26*4882a593Smuzhiyun return -EOPNOTSUPP;
27*4882a593Smuzhiyun return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER,
28*4882a593Smuzhiyun name, buffer, size);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun static int
ext2_xattr_user_set(const struct xattr_handler * handler,struct dentry * unused,struct inode * inode,const char * name,const void * value,size_t size,int flags)32*4882a593Smuzhiyun ext2_xattr_user_set(const struct xattr_handler *handler,
33*4882a593Smuzhiyun struct dentry *unused, struct inode *inode,
34*4882a593Smuzhiyun const char *name, const void *value,
35*4882a593Smuzhiyun size_t size, int flags)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun if (!test_opt(inode->i_sb, XATTR_USER))
38*4882a593Smuzhiyun return -EOPNOTSUPP;
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun return ext2_xattr_set(inode, EXT2_XATTR_INDEX_USER,
41*4882a593Smuzhiyun name, value, size, flags);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun const struct xattr_handler ext2_xattr_user_handler = {
45*4882a593Smuzhiyun .prefix = XATTR_USER_PREFIX,
46*4882a593Smuzhiyun .list = ext2_xattr_user_list,
47*4882a593Smuzhiyun .get = ext2_xattr_user_get,
48*4882a593Smuzhiyun .set = ext2_xattr_user_set,
49*4882a593Smuzhiyun };
50