include/keys/system_keyring.h

   1 /* System keyring containing trusted public keys.
   2  *
   3  * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11
  12 #ifndef _KEYS_SYSTEM_KEYRING_H
  13 #define _KEYS_SYSTEM_KEYRING_H
  14
  15 #include <linux/key.h>
  16
  17 #ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
  18
  19 extern int restrict_link_by_builtin_trusted(struct key *keyring,
  20                                             const struct key_type *type,
  21                                             const union key_payload *payload,
  22                                             struct key *restriction_key);
  23
  24 #else
  25 #define restrict_link_by_builtin_trusted restrict_link_reject
  26 #endif
  27
  28 #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
  29 extern int restrict_link_by_builtin_and_secondary_trusted(
  30         struct key *keyring,
  31         const struct key_type *type,
  32         const union key_payload *payload,
  33         struct key *restriction_key);
  34 #else
  35 #define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
  36 #endif
  37
  38 #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
  39 extern int mark_hash_blacklisted(const char *hash);
  40 extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  41                                const char *type);
  42 #else
  43 static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  44                                       const char *type)
  45 {
  46         return 0;
  47 }
  48 #endif
  49
  50 #ifdef CONFIG_IMA_BLACKLIST_KEYRING
  51 extern struct key *ima_blacklist_keyring;
  52
  53 static inline struct key *get_ima_blacklist_keyring(void)
  54 {
  55         return ima_blacklist_keyring;
  56 }
  57 #else
  58 static inline struct key *get_ima_blacklist_keyring(void)
  59 {
  60         return NULL;
  61 }
  62 #endif /* CONFIG_IMA_BLACKLIST_KEYRING */
  63
  64
  65 #endif /* _KEYS_SYSTEM_KEYRING_H */