name : system_keyring.h /* SPDX-License-Identifier: GPL-2.0-or-later */ /* System keyring containing trusted public keys. * * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #ifndef _KEYS_SYSTEM_KEYRING_H #define _KEYS_SYSTEM_KEYRING_H #include <linux/key.h> enum blacklist_hash_type { /* TBSCertificate hash */ BLACKLIST_HASH_X509_TBS = 1, /* Raw data hash */ BLACKLIST_HASH_BINARY = 2, }; #ifdef CONFIG_SYSTEM_TRUSTED_KEYRING extern int restrict_link_by_builtin_trusted(struct key *keyring, const struct key_type *type, const union key_payload *payload, struct key *restriction_key); int restrict_link_by_digsig_builtin(struct key *dest_keyring, const struct key_type *type, const union key_payload *payload, struct key *restriction_key); extern __init int load_module_cert(struct key *keyring); #else #define restrict_link_by_builtin_trusted restrict_link_reject #define restrict_link_by_digsig_builtin restrict_link_reject static inline __init int load_module_cert(struct key *keyring) { return 0; } #endif #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING extern int restrict_link_by_builtin_and_secondary_trusted( struct key *keyring, const struct key_type *type, const union key_payload *payload, struct key *restriction_key); int restrict_link_by_digsig_builtin_and_secondary(struct key *keyring, const struct key_type *type, const union key_payload *payload, struct key *restriction_key); void __init add_to_secondary_keyring(const char *source, const void *data, size_t len); #else #define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted #define restrict_link_by_digsig_builtin_and_secondary restrict_link_by_digsig_builtin static inline void __init add_to_secondary_keyring(const char *source, const void *data, size_t len) { } #endif #ifdef CONFIG_INTEGRITY_MACHINE_KEYRING extern int restrict_link_by_builtin_secondary_and_machine( struct key *dest_keyring, const struct key_type *type, const union key_payload *payload, struct key *restrict_key); extern void __init set_machine_trusted_keys(struct key *keyring); #else #define restrict_link_by_builtin_secondary_and_machine restrict_link_by_builtin_trusted static inline void __init set_machine_trusted_keys(struct key *keyring) { } #endif extern struct pkcs7_message *pkcs7; #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING extern int mark_hash_blacklisted(const u8 *hash, size_t hash_len, enum blacklist_hash_type hash_type); extern int is_hash_blacklisted(const u8 *hash, size_t hash_len, enum blacklist_hash_type hash_type); extern int is_binary_blacklisted(const u8 *hash, size_t hash_len); #else static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len, enum blacklist_hash_type hash_type) { return 0; } static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len) { return 0; } #endif #ifdef CONFIG_SYSTEM_REVOCATION_LIST extern int add_key_to_revocation_list(const char *data, size_t size); extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7); #else static inline int add_key_to_revocation_list(const char *data, size_t size) { return 0; } static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7) { return -ENOKEY; } #endif #ifdef CONFIG_IMA_BLACKLIST_KEYRING extern struct key *ima_blacklist_keyring; static inline struct key *get_ima_blacklist_keyring(void) { return ima_blacklist_keyring; } #else static inline struct key *get_ima_blacklist_keyring(void) { return NULL; } #endif /* CONFIG_IMA_BLACKLIST_KEYRING */ #if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \ defined(CONFIG_SYSTEM_TRUSTED_KEYRING) extern void __init set_platform_trusted_keys(struct key *keyring); #else static inline void set_platform_trusted_keys(struct key *keyring) { } #endif #endif /* _KEYS_SYSTEM_KEYRING_H */