text: /* System keyring containing trusted public keys.
   *
   * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
   * Written by David Howells (dhowells@redhat.com)
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public Licence
   * as published by the Free Software Foundation; either version
   * 2 of the Licence, or (at your option) any later version.
   */
  
  #ifndef _KEYS_SYSTEM_KEYRING_H
  #define _KEYS_SYSTEM_KEYRING_H
  
  #include <linux/key.h>
  
  #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);
  
  #else
  #define restrict_link_by_builtin_trusted restrict_link_reject
  #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);
  #else
  #define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
  #endif
  
  #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
  extern int mark_hash_blacklisted(const char *hash);
  extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  			       const char *type);
  #else
  static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  				      const char *type)
  {
  	return 0;
  }
  #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 */
  
  
  #endif /* _KEYS_SYSTEM_KEYRING_H */
  