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https://github.com/darlinghq/darling-xnu.git
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118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/*
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* Copyright (c) 2018 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _KERN_TRUSTCACHE_H_
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#define _KERN_TRUSTCACHE_H_
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#include <stdint.h>
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#include <kern/cs_blobs.h>
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#include <uuid/uuid.h>
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#ifdef PLATFORM_BridgeOS
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/* Version 0 trust caches: No defined sorting order (thus only suitable for small trust caches).
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* Used for loadable trust caches only, until phasing out support. */
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typedef uint8_t trust_cache_hash0[CS_CDHASH_LEN];
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struct trust_cache_module0 {
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uint32_t version;
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uuid_t uuid;
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uint32_t num_hashes;
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trust_cache_hash0 hashes[];
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} __attribute__((__packed__));
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#endif
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/* Version 1 trust caches: Always sorted by cdhash, added hash type and flags field.
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* Suitable for all trust caches. */
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struct trust_cache_entry1 {
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uint8_t cdhash[CS_CDHASH_LEN];
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uint8_t hash_type;
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uint8_t flags;
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} __attribute__((__packed__));
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struct trust_cache_module1 {
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uint32_t version;
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uuid_t uuid;
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uint32_t num_entries;
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struct trust_cache_entry1 entries[];
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} __attribute__((__packed__));
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// Trust Cache Entry Flags
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#define CS_TRUST_CACHE_AMFID 0x1 // valid cdhash for amfid
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/* Trust Cache lookup functions return their result as a 32bit value
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* comprised of subfields, for straightforward passing through layers.
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*
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* Format:
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*
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* 0xXXCCBBAA
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*
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* AA: 0-7: lookup result
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* bit 0: TC_LOOKUP_FOUND: set if any entry found
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* bit 1: (obsolete) TC_LOOKUP_FALLBACK: set if found in legacy static trust cache
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* bit 2-7: reserved
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* BB: 8-15: entry flags pass-through, see "Trust Cache Entry Flags" above
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* CC: 16-23: code directory hash type of entry, see CS_HASHTYPE_* in cs_blobs.h
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* XX: 24-31: reserved
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*/
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#define TC_LOOKUP_HASH_TYPE_SHIFT 16
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#define TC_LOOKUP_HASH_TYPE_MASK 0xff0000L;
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#define TC_LOOKUP_FLAGS_SHIFT 8
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#define TC_LOOKUP_FLAGS_MASK 0xff00L
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#define TC_LOOKUP_RESULT_SHIFT 0
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#define TC_LOOKUP_RESULT_MASK 0xffL
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#define TC_LOOKUP_FOUND 1
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#ifdef XNU_KERNEL_PRIVATE
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// Serialized Trust Caches
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/* This is how iBoot delivers them to us. */
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struct serialized_trust_caches {
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uint32_t num_caches;
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uint32_t offsets[0];
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} __attribute__((__packed__));
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void trust_cache_init(void);
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uint32_t lookup_in_static_trust_cache(const uint8_t cdhash[CS_CDHASH_LEN]);
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bool lookup_in_trust_cache_module(struct trust_cache_module1 const * const module,
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uint8_t const cdhash[CS_CDHASH_LEN],
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uint8_t * const hash_type,
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uint8_t * const flags);
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#endif
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#endif /* _KERN_TRUSTCACHE_H */
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