1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Machine keyring routines.
4  *
5  * Copyright (c) 2021, Oracle and/or its affiliates.
6  */
7 
8 #include "../integrity.h"
9 
10 static __init int machine_keyring_init(void)
11 {
12 	int rc;
13 
14 	rc = integrity_init_keyring(INTEGRITY_KEYRING_MACHINE);
15 	if (rc)
16 		return rc;
17 
18 	pr_notice("Machine keyring initialized\n");
19 	return 0;
20 }
21 device_initcall(machine_keyring_init);
22 
23 void __init add_to_machine_keyring(const char *source, const void *data, size_t len)
24 {
25 	key_perm_t perm;
26 	int rc;
27 
28 	perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW;
29 	rc = integrity_load_cert(INTEGRITY_KEYRING_MACHINE, source, data, len, perm);
30 
31 	/*
32 	 * Some MOKList keys may not pass the machine keyring restrictions.
33 	 * If the restriction check does not pass and the platform keyring
34 	 * is configured, try to add it into that keyring instead.
35 	 */
36 	if (rc && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING))
37 		rc = integrity_load_cert(INTEGRITY_KEYRING_PLATFORM, source,
38 					 data, len, perm);
39 
40 	if (rc)
41 		pr_info("Error adding keys to machine keyring %s\n", source);
42 }
43