mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 16:39:35 +00:00
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
/*
|
|
* Copyright (C) 2016 The Android Open Source Project
|
|
*/
|
|
|
|
#if !defined(AVB_INSIDE_LIBAVB_H) && !defined(AVB_COMPILATION)
|
|
#error "Never include this file directly, include libavb.h instead."
|
|
#endif
|
|
|
|
#ifndef AVB_HASHTREE_DESCRIPTOR_H_
|
|
#define AVB_HASHTREE_DESCRIPTOR_H_
|
|
|
|
#include "avb_descriptor.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Flags for hashtree descriptors.
|
|
*
|
|
* AVB_HASHTREE_DESCRIPTOR_FLAGS_DO_NOT_USE_AB: Do not apply the default A/B
|
|
* partition logic to this partition. This is intentionally a negative boolean
|
|
* because A/B should be both the default and most used in practice.
|
|
*/
|
|
typedef enum {
|
|
AVB_HASHTREE_DESCRIPTOR_FLAGS_DO_NOT_USE_AB = (1 << 0),
|
|
} AvbHashtreeDescriptorFlags;
|
|
|
|
/* A descriptor containing information about a dm-verity hashtree.
|
|
*
|
|
* Hash-trees are used to verify large partitions typically containing
|
|
* file systems. See
|
|
* https://gitlab.com/cryptsetup/cryptsetup/wikis/DMVerity for more
|
|
* information about dm-verity.
|
|
*
|
|
* Following this struct are |partition_name_len| bytes of the
|
|
* partition name (UTF-8 encoded), |salt_len| bytes of salt, and then
|
|
* |root_digest_len| bytes of the root digest.
|
|
*
|
|
* The |reserved| field is for future expansion and must be set to NUL
|
|
* bytes.
|
|
*
|
|
* Changes in v1.1:
|
|
* - flags field is added which supports AVB_HASHTREE_DESCRIPTOR_FLAGS_USE_AB
|
|
* - digest_len may be zero, which indicates the use of a persistent digest
|
|
*/
|
|
typedef struct AvbHashtreeDescriptor {
|
|
AvbDescriptor parent_descriptor;
|
|
uint32_t dm_verity_version;
|
|
uint64_t image_size;
|
|
uint64_t tree_offset;
|
|
uint64_t tree_size;
|
|
uint32_t data_block_size;
|
|
uint32_t hash_block_size;
|
|
uint32_t fec_num_roots;
|
|
uint64_t fec_offset;
|
|
uint64_t fec_size;
|
|
uint8_t hash_algorithm[32];
|
|
uint32_t partition_name_len;
|
|
uint32_t salt_len;
|
|
uint32_t root_digest_len;
|
|
uint32_t flags;
|
|
uint8_t reserved[60];
|
|
} AVB_ATTR_PACKED AvbHashtreeDescriptor;
|
|
|
|
/* Copies |src| to |dest| and validates, byte-swapping fields in the
|
|
* process if needed. Returns true if valid, false if invalid.
|
|
*
|
|
* Data following the struct is not validated nor copied.
|
|
*/
|
|
bool avb_hashtree_descriptor_validate_and_byteswap(
|
|
const AvbHashtreeDescriptor* src,
|
|
AvbHashtreeDescriptor* dest) AVB_ATTR_WARN_UNUSED_RESULT;
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* AVB_HASHTREE_DESCRIPTOR_H_ */
|