LXR linux/include/keys/system

   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#ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
  14
  15extern int restrict_link_by_builtin_trusted(struct key *keyring,
  16                                            const struct key_type *type,
  17                                            const union key_payload *payload,
  18                                            struct key *restriction_key);
  19
  20#else
  21#define restrict_link_by_builtin_trusted restrict_link_reject
  22#endif
  23
  24#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
  25extern int restrict_link_by_builtin_and_secondary_trusted(
  26        struct key *keyring,
  27        const struct key_type *type,
  28        const union key_payload *payload,
  29        struct key *restriction_key);
  30#else
  31#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
  32#endif
  33
  34#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
  35extern int mark_hash_blacklisted(const char *hash);
  36extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  37                               const char *type);
  38#else
  39static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
  40                                      const char *type)
  41{
  42        return 0;
  43}
  44#endif
  45
  46#ifdef CONFIG_IMA_BLACKLIST_KEYRING
  47extern struct key *ima_blacklist_keyring;
  48
  49static inline struct key *get_ima_blacklist_keyring(void)
  50{
  51        return ima_blacklist_keyring;
  52}
  53#else
  54static inline struct key *get_ima_blacklist_keyring(void)
  55{
  56        return NULL;
  57}
  58#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
  59
  60#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
  61        defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
  62extern void __init set_platform_trusted_keys(struct key *keyring);
  63#else
  64static inline void set_platform_trusted_keys(struct key *keyring)
  65{
  66}
  67#endif
  68
  69#endif /* _KEYS_SYSTEM_KEYRING_H */
  70