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 | enum blacklist_hash_type { |
14 | /* TBSCertificate hash */ |
15 | BLACKLIST_HASH_X509_TBS = 1, |
16 | /* Raw data hash */ |
17 | BLACKLIST_HASH_BINARY = 2, |
18 | }; |
19 | |
20 | #ifdef CONFIG_SYSTEM_TRUSTED_KEYRING |
21 | |
22 | extern int restrict_link_by_builtin_trusted(struct key *keyring, |
23 | const struct key_type *type, |
24 | const union key_payload *payload, |
25 | struct key *restriction_key); |
26 | int restrict_link_by_digsig_builtin(struct key *dest_keyring, |
27 | const struct key_type *type, |
28 | const union key_payload *payload, |
29 | struct key *restriction_key); |
30 | extern __init int load_module_cert(struct key *keyring); |
31 | |
32 | #else |
33 | #define restrict_link_by_builtin_trusted restrict_link_reject |
34 | #define restrict_link_by_digsig_builtin restrict_link_reject |
35 | |
36 | static inline __init int load_module_cert(struct key *keyring) |
37 | { |
38 | return 0; |
39 | } |
40 | |
41 | #endif |
42 | |
43 | #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING |
44 | extern int restrict_link_by_builtin_and_secondary_trusted( |
45 | struct key *keyring, |
46 | const struct key_type *type, |
47 | const union key_payload *payload, |
48 | struct key *restriction_key); |
49 | int restrict_link_by_digsig_builtin_and_secondary(struct key *keyring, |
50 | const struct key_type *type, |
51 | const union key_payload *payload, |
52 | struct key *restriction_key); |
53 | void __init add_to_secondary_keyring(const char *source, const void *data, size_t len); |
54 | #else |
55 | #define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted |
56 | #define restrict_link_by_digsig_builtin_and_secondary restrict_link_by_digsig_builtin |
57 | static inline void __init add_to_secondary_keyring(const char *source, const void *data, size_t len) |
58 | { |
59 | } |
60 | #endif |
61 | |
62 | #ifdef CONFIG_INTEGRITY_MACHINE_KEYRING |
63 | extern int restrict_link_by_builtin_secondary_and_machine( |
64 | struct key *dest_keyring, |
65 | const struct key_type *type, |
66 | const union key_payload *payload, |
67 | struct key *restrict_key); |
68 | extern void __init set_machine_trusted_keys(struct key *keyring); |
69 | #else |
70 | #define restrict_link_by_builtin_secondary_and_machine restrict_link_by_builtin_trusted |
71 | static inline void __init set_machine_trusted_keys(struct key *keyring) |
72 | { |
73 | } |
74 | #endif |
75 | |
76 | extern struct pkcs7_message *pkcs7; |
77 | #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING |
78 | extern int mark_hash_blacklisted(const u8 *hash, size_t hash_len, |
79 | enum blacklist_hash_type hash_type); |
80 | extern int is_hash_blacklisted(const u8 *hash, size_t hash_len, |
81 | enum blacklist_hash_type hash_type); |
82 | extern int is_binary_blacklisted(const u8 *hash, size_t hash_len); |
83 | #else |
84 | static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len, |
85 | enum blacklist_hash_type hash_type) |
86 | { |
87 | return 0; |
88 | } |
89 | |
90 | static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len) |
91 | { |
92 | return 0; |
93 | } |
94 | #endif |
95 | |
96 | #ifdef CONFIG_SYSTEM_REVOCATION_LIST |
97 | extern int add_key_to_revocation_list(const char *data, size_t size); |
98 | extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7); |
99 | #else |
100 | static inline int add_key_to_revocation_list(const char *data, size_t size) |
101 | { |
102 | return 0; |
103 | } |
104 | static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7) |
105 | { |
106 | return -ENOKEY; |
107 | } |
108 | #endif |
109 | |
110 | #ifdef CONFIG_IMA_BLACKLIST_KEYRING |
111 | extern struct key *ima_blacklist_keyring; |
112 | |
113 | static inline struct key *get_ima_blacklist_keyring(void) |
114 | { |
115 | return ima_blacklist_keyring; |
116 | } |
117 | #else |
118 | static inline struct key *get_ima_blacklist_keyring(void) |
119 | { |
120 | return NULL; |
121 | } |
122 | #endif /* CONFIG_IMA_BLACKLIST_KEYRING */ |
123 | |
124 | #if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \ |
125 | defined(CONFIG_SYSTEM_TRUSTED_KEYRING) |
126 | extern void __init set_platform_trusted_keys(struct key *keyring); |
127 | #else |
128 | static inline void set_platform_trusted_keys(struct key *keyring) |
129 | { |
130 | } |
131 | #endif |
132 | |
133 | #endif /* _KEYS_SYSTEM_KEYRING_H */ |
134 | |