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
15 extern 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
25 extern 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 extern struct pkcs7_message *pkcs7;
35 #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
36 extern int mark_hash_blacklisted(const char *hash);
37 extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
38 const char *type);
39 extern int is_binary_blacklisted(const u8 *hash, size_t hash_len);
40 #else
is_hash_blacklisted(const u8 * hash,size_t hash_len,const char * type)41 static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
42 const char *type)
43 {
44 return 0;
45 }
46
is_binary_blacklisted(const u8 * hash,size_t hash_len)47 static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
48 {
49 return 0;
50 }
51 #endif
52
53 #ifdef CONFIG_SYSTEM_REVOCATION_LIST
54 extern int add_key_to_revocation_list(const char *data, size_t size);
55 extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7);
56 #else
add_key_to_revocation_list(const char * data,size_t size)57 static inline int add_key_to_revocation_list(const char *data, size_t size)
58 {
59 return 0;
60 }
is_key_on_revocation_list(struct pkcs7_message * pkcs7)61 static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7)
62 {
63 return -ENOKEY;
64 }
65 #endif
66
67 #ifdef CONFIG_IMA_BLACKLIST_KEYRING
68 extern struct key *ima_blacklist_keyring;
69
get_ima_blacklist_keyring(void)70 static inline struct key *get_ima_blacklist_keyring(void)
71 {
72 return ima_blacklist_keyring;
73 }
74 #else
get_ima_blacklist_keyring(void)75 static inline struct key *get_ima_blacklist_keyring(void)
76 {
77 return NULL;
78 }
79 #endif /* CONFIG_IMA_BLACKLIST_KEYRING */
80
81 #if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
82 defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
83 extern void __init set_platform_trusted_keys(struct key *keyring);
84 #else
set_platform_trusted_keys(struct key * keyring)85 static inline void set_platform_trusted_keys(struct key *keyring)
86 {
87 }
88 #endif
89
90 #endif /* _KEYS_SYSTEM_KEYRING_H */
91