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2434f7d2d4
The -EKEYREJECTED error returned by existing is_hash_blacklisted() is misleading when called for checking against blacklisted hash of a binary. This patch adds a wrapper function is_binary_blacklisted() to return -EPERM error if binary is blacklisted. Signed-off-by: Nayna Jain <nayna@linux.ibm.com> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1572492694-6520-7-git-send-email-zohar@linux.ibm.com
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* 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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#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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extern int is_binary_blacklisted(const u8 *hash, size_t hash_len);
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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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static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
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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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