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);
19extern __init int load_module_cert(struct key *keyring);
20
21#else
22#define restrict_link_by_builtin_trusted restrict_link_reject
23
24static inline __init int load_module_cert(struct key *keyring)
25{
26	return 0;
27}
28
29#endif
30
31#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
32extern int restrict_link_by_builtin_and_secondary_trusted(
33	struct key *keyring,
34	const struct key_type *type,
35	const union key_payload *payload,
36	struct key *restriction_key);
37#else
38#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
39#endif
40
41extern struct pkcs7_message *pkcs7;
42#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
43extern int mark_hash_blacklisted(const char *hash);
44extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
45			       const char *type);
46extern int is_binary_blacklisted(const u8 *hash, size_t hash_len);
47#else
48static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
49				      const char *type)
50{
51	return 0;
52}
53
54static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
55{
56	return 0;
57}
58#endif
59
60#ifdef CONFIG_SYSTEM_REVOCATION_LIST
61extern int add_key_to_revocation_list(const char *data, size_t size);
62extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7);
63#else
64static inline int add_key_to_revocation_list(const char *data, size_t size)
65{
66	return 0;
67}
68static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7)
69{
70	return -ENOKEY;
71}
72#endif
73
74#ifdef CONFIG_IMA_BLACKLIST_KEYRING
75extern struct key *ima_blacklist_keyring;
76
77static inline struct key *get_ima_blacklist_keyring(void)
78{
79	return ima_blacklist_keyring;
80}
81#else
82static inline struct key *get_ima_blacklist_keyring(void)
83{
84	return NULL;
85}
86#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
87
88#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
89	defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
90extern void __init set_platform_trusted_keys(struct key *keyring);
91#else
92static inline void set_platform_trusted_keys(struct key *keyring)
93{
94}
95#endif
96
97#endif /* _KEYS_SYSTEM_KEYRING_H */