1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
2ac27a0ecSDave Kleikamp /*
3617ba13bSMingming Cao * linux/fs/ext4/xattr_user.c
4ac27a0ecSDave Kleikamp * Handler for extended user attributes.
5ac27a0ecSDave Kleikamp *
6ac27a0ecSDave Kleikamp * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
7ac27a0ecSDave Kleikamp */
8ac27a0ecSDave Kleikamp
9ac27a0ecSDave Kleikamp #include <linux/string.h>
10ac27a0ecSDave Kleikamp #include <linux/fs.h>
113dcf5451SChristoph Hellwig #include "ext4_jbd2.h"
123dcf5451SChristoph Hellwig #include "ext4.h"
13ac27a0ecSDave Kleikamp #include "xattr.h"
14ac27a0ecSDave Kleikamp
15764a5c6bSAndreas Gruenbacher static bool
ext4_xattr_user_list(struct dentry * dentry)16764a5c6bSAndreas Gruenbacher ext4_xattr_user_list(struct dentry *dentry)
17ac27a0ecSDave Kleikamp {
18764a5c6bSAndreas Gruenbacher return test_opt(dentry->d_sb, XATTR_USER);
19ac27a0ecSDave Kleikamp }
20ac27a0ecSDave Kleikamp
21ac27a0ecSDave Kleikamp static int
ext4_xattr_user_get(const struct xattr_handler * handler,struct dentry * unused,struct inode * inode,const char * name,void * buffer,size_t size)22d9a82a04SAndreas Gruenbacher ext4_xattr_user_get(const struct xattr_handler *handler,
23b296821aSAl Viro struct dentry *unused, struct inode *inode,
24b296821aSAl Viro const char *name, void *buffer, size_t size)
25ac27a0ecSDave Kleikamp {
26b296821aSAl Viro if (!test_opt(inode->i_sb, XATTR_USER))
27ac27a0ecSDave Kleikamp return -EOPNOTSUPP;
28b296821aSAl Viro return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER,
29431547b3SChristoph Hellwig name, buffer, size);
30ac27a0ecSDave Kleikamp }
31ac27a0ecSDave Kleikamp
32ac27a0ecSDave Kleikamp static int
ext4_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)33d9a82a04SAndreas Gruenbacher ext4_xattr_user_set(const struct xattr_handler *handler,
34*39f60c1cSChristian Brauner struct mnt_idmap *idmap,
3559301226SAl Viro struct dentry *unused, struct inode *inode,
3659301226SAl Viro const char *name, const void *value,
3759301226SAl Viro size_t size, int flags)
38ac27a0ecSDave Kleikamp {
3959301226SAl Viro if (!test_opt(inode->i_sb, XATTR_USER))
40ac27a0ecSDave Kleikamp return -EOPNOTSUPP;
4159301226SAl Viro return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER,
42431547b3SChristoph Hellwig name, value, size, flags);
43ac27a0ecSDave Kleikamp }
44ac27a0ecSDave Kleikamp
4511e27528SStephen Hemminger const struct xattr_handler ext4_xattr_user_handler = {
46ac27a0ecSDave Kleikamp .prefix = XATTR_USER_PREFIX,
47617ba13bSMingming Cao .list = ext4_xattr_user_list,
48617ba13bSMingming Cao .get = ext4_xattr_user_get,
49617ba13bSMingming Cao .set = ext4_xattr_user_set,
50ac27a0ecSDave Kleikamp };
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