1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/* System keyring containing trusted public keys.
 3 *
 4 * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
 5 * Written by David Howells (dhowells@redhat.com)
 6 */
 7
 8#ifndef _KEYS_SYSTEM_KEYRING_H
 9#define _KEYS_SYSTEM_KEYRING_H
10
11#include <linux/key.h>
12
13#ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
14
15extern int restrict_link_by_builtin_trusted(struct key *keyring,
16					    const struct key_type *type,
17					    const union key_payload *payload,
18					    struct key *restriction_key);
19
20#else
21#define restrict_link_by_builtin_trusted restrict_link_reject
22#endif
23
24#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
25extern int restrict_link_by_builtin_and_secondary_trusted(
26	struct key *keyring,
27	const struct key_type *type,
28	const union key_payload *payload,
29	struct key *restriction_key);
30#else
31#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
32#endif
33
34#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
35extern int mark_hash_blacklisted(const char *hash);
36extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
37			       const char *type);
38extern int is_binary_blacklisted(const u8 *hash, size_t hash_len);
39#else
40static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
41				      const char *type)
42{
43	return 0;
44}
45
46static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
47{
48	return 0;
49}
50#endif
51
52#ifdef CONFIG_IMA_BLACKLIST_KEYRING
53extern struct key *ima_blacklist_keyring;
54
55static inline struct key *get_ima_blacklist_keyring(void)
56{
57	return ima_blacklist_keyring;
58}
59#else
60static inline struct key *get_ima_blacklist_keyring(void)
61{
62	return NULL;
63}
64#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
65
66#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
67	defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
68extern void __init set_platform_trusted_keys(struct key *keyring);
69#else
70static inline void set_platform_trusted_keys(struct key *keyring)
71{
72}
73#endif
74
75#endif /* _KEYS_SYSTEM_KEYRING_H */