1/* System keyring containing trusted public keys.
 2 *
 3 * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public Licence
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#ifndef _KEYS_SYSTEM_KEYRING_H
13#define _KEYS_SYSTEM_KEYRING_H
14
15#include <linux/key.h>
16
17#ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
18
19extern int restrict_link_by_builtin_trusted(struct key *keyring,
20					    const struct key_type *type,
21					    const union key_payload *payload,
22					    struct key *restriction_key);
23
24#else
25#define restrict_link_by_builtin_trusted restrict_link_reject
26#endif
27
28#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
29extern int restrict_link_by_builtin_and_secondary_trusted(
30	struct key *keyring,
31	const struct key_type *type,
32	const union key_payload *payload,
33	struct key *restriction_key);
34#else
35#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
36#endif
37
38#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
39extern int mark_hash_blacklisted(const char *hash);
40extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
41			       const char *type);
42#else
43static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
44				      const char *type)
45{
46	return 0;
47}
48#endif
49
50#ifdef CONFIG_IMA_BLACKLIST_KEYRING
51extern struct key *ima_blacklist_keyring;
52
53static inline struct key *get_ima_blacklist_keyring(void)
54{
55	return ima_blacklist_keyring;
56}
57#else
58static inline struct key *get_ima_blacklist_keyring(void)
59{
60	return NULL;
61}
62#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
63
64
65#endif /* _KEYS_SYSTEM_KEYRING_H */