1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
2ac27a0ecSDave Kleikamp /*
3617ba13bSMingming Cao * linux/fs/ext4/xattr_trusted.c
4ac27a0ecSDave Kleikamp * Handler for trusted extended attributes.
5ac27a0ecSDave Kleikamp *
6ac27a0ecSDave Kleikamp * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
7ac27a0ecSDave Kleikamp */
8ac27a0ecSDave Kleikamp
9ac27a0ecSDave Kleikamp #include <linux/string.h>
10ac27a0ecSDave Kleikamp #include <linux/capability.h>
11ac27a0ecSDave Kleikamp #include <linux/fs.h>
123dcf5451SChristoph Hellwig #include "ext4_jbd2.h"
133dcf5451SChristoph Hellwig #include "ext4.h"
14ac27a0ecSDave Kleikamp #include "xattr.h"
15ac27a0ecSDave Kleikamp
16764a5c6bSAndreas Gruenbacher static bool
ext4_xattr_trusted_list(struct dentry * dentry)17764a5c6bSAndreas Gruenbacher ext4_xattr_trusted_list(struct dentry *dentry)
18ac27a0ecSDave Kleikamp {
19764a5c6bSAndreas Gruenbacher return capable(CAP_SYS_ADMIN);
20ac27a0ecSDave Kleikamp }
21ac27a0ecSDave Kleikamp
22ac27a0ecSDave Kleikamp static int
ext4_xattr_trusted_get(const struct xattr_handler * handler,struct dentry * unused,struct inode * inode,const char * name,void * buffer,size_t size)23d9a82a04SAndreas Gruenbacher ext4_xattr_trusted_get(const struct xattr_handler *handler,
24b296821aSAl Viro struct dentry *unused, struct inode *inode,
25b296821aSAl Viro const char *name, void *buffer, size_t size)
26ac27a0ecSDave Kleikamp {
27b296821aSAl Viro return ext4_xattr_get(inode, EXT4_XATTR_INDEX_TRUSTED,
28431547b3SChristoph Hellwig name, buffer, size);
29ac27a0ecSDave Kleikamp }
30ac27a0ecSDave Kleikamp
31ac27a0ecSDave Kleikamp static int
ext4_xattr_trusted_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)32d9a82a04SAndreas Gruenbacher ext4_xattr_trusted_set(const struct xattr_handler *handler,
33*39f60c1cSChristian Brauner struct mnt_idmap *idmap,
3459301226SAl Viro struct dentry *unused, struct inode *inode,
3559301226SAl Viro const char *name, const void *value,
3659301226SAl Viro size_t size, int flags)
37ac27a0ecSDave Kleikamp {
3859301226SAl Viro return ext4_xattr_set(inode, EXT4_XATTR_INDEX_TRUSTED,
39431547b3SChristoph Hellwig name, value, size, flags);
40ac27a0ecSDave Kleikamp }
41ac27a0ecSDave Kleikamp
4211e27528SStephen Hemminger const struct xattr_handler ext4_xattr_trusted_handler = {
43ac27a0ecSDave Kleikamp .prefix = XATTR_TRUSTED_PREFIX,
44617ba13bSMingming Cao .list = ext4_xattr_trusted_list,
45617ba13bSMingming Cao .get = ext4_xattr_trusted_get,
46617ba13bSMingming Cao .set = ext4_xattr_trusted_set,
47ac27a0ecSDave Kleikamp };
48