1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/fs/ext2/xattr_security.c
4 * Handler for storing security labels as extended attributes.
5 */
6
7#include "ext2.h"
8#include <linux/security.h>
9#include "xattr.h"
10
11static int
12ext2_xattr_security_get(const struct xattr_handler *handler,
13 struct dentry *unused, struct inode *inode,
14 const char *name, void *buffer, size_t size)
15{
16 return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
17 buffer, size);
18}
19
20static int
21ext2_xattr_security_set(const struct xattr_handler *handler,
22 struct mnt_idmap *idmap,
23 struct dentry *unused, struct inode *inode,
24 const char *name, const void *value,
25 size_t size, int flags)
26{
27 return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,
28 value, size, flags);
29}
30
31static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
32 void *fs_info)
33{
34 const struct xattr *xattr;
35 int err = 0;
36
37 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
38 err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
39 xattr->name, xattr->value,
40 xattr->value_len, 0);
41 if (err < 0)
42 break;
43 }
44 return err;
45}
46
47int
48ext2_init_security(struct inode *inode, struct inode *dir,
49 const struct qstr *qstr)
50{
51 return security_inode_init_security(inode, dir, qstr,
52 initxattrs: &ext2_initxattrs, NULL);
53}
54
55const struct xattr_handler ext2_xattr_security_handler = {
56 .prefix = XATTR_SECURITY_PREFIX,
57 .get = ext2_xattr_security_get,
58 .set = ext2_xattr_security_set,
59};
60

source code of linux/fs/ext2/xattr_security.c