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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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219a3e8676
commit 9dc92c4517 ("integrity: Define a trusted platform keyring")
introduced a .platform keyring for storing preboot keys, used for
verifying kernel image signatures. Currently only IMA-appraisal is able
to use the keyring to verify kernel images that have their signature
stored in xattr.
This patch exposes the .platform keyring, making it accessible for
verifying PE signed kernel images as well.
Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Kairui Song <kasong@redhat.com>
Cc: David Howells <dhowells@redhat.com>
[zohar@linux.ibm.com: fixed checkpatch errors, squashed with patch fix]
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/* System keyring containing trusted public keys.
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*
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* Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _KEYS_SYSTEM_KEYRING_H
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#define _KEYS_SYSTEM_KEYRING_H
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#include <linux/key.h>
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#ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
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extern int restrict_link_by_builtin_trusted(struct key *keyring,
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const struct key_type *type,
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const union key_payload *payload,
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struct key *restriction_key);
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#else
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#define restrict_link_by_builtin_trusted restrict_link_reject
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#endif
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#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
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extern int restrict_link_by_builtin_and_secondary_trusted(
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struct key *keyring,
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const struct key_type *type,
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const union key_payload *payload,
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struct key *restriction_key);
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#else
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#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
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#endif
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#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
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extern int mark_hash_blacklisted(const char *hash);
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extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
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const char *type);
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#else
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static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
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const char *type)
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{
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return 0;
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}
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#endif
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#ifdef CONFIG_IMA_BLACKLIST_KEYRING
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extern struct key *ima_blacklist_keyring;
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static inline struct key *get_ima_blacklist_keyring(void)
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{
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return ima_blacklist_keyring;
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}
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#else
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static inline struct key *get_ima_blacklist_keyring(void)
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{
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return NULL;
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}
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#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
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#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
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defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
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extern void __init set_platform_trusted_keys(struct key *keyring);
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#else
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static inline void set_platform_trusted_keys(struct key *keyring)
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{
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}
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#endif
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#endif /* _KEYS_SYSTEM_KEYRING_H */
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