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
  23 #else
  24 #define restrict_link_by_builtin_trusted restrict_link_reject
  25 #endif
  26
  27 #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
  28 extern int restrict_link_by_builtin_and_secondary_trusted(
  29         struct key *keyring,
  30         const struct key_type *type,
  31         const union key_payload *payload);
  32 #else
  33 #define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
  34 #endif
  35
  36 #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
  37 extern int mark_hash_blacklisted(const char *hash);
  38 extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  39                                const char *type);
  40 #else
  41 static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  42                                       const char *type)
  43 {
  44         return 0;
  45 }
  46 #endif
  47
  48 #ifdef CONFIG_IMA_BLACKLIST_KEYRING
  49 extern struct key *ima_blacklist_keyring;
  50
  51 static inline struct key *get_ima_blacklist_keyring(void)
  52 {
  53         return ima_blacklist_keyring;
  54 }
  55 #else
  56 static inline struct key *get_ima_blacklist_keyring(void)
  57 {
  58         return NULL;
  59 }
  60 #endif /* CONFIG_IMA_BLACKLIST_KEYRING */
  61
  62
  63 #endif /* _KEYS_SYSTEM_KEYRING_H */