From 1c79796a523255af5d012fa3cbc5400131b3b8b9 Mon Sep 17 00:00:00 2001 From: zhang sanshan Date: Mon, 15 May 2017 10:45:07 +0800 Subject: MA-9409-1 enable avb on android things. Fix issue for API changed from v2017. porting below patch from v2016. commit 44834fd12f60a090e3d10ab6f84a75460894d49d Change-Id: Ifaf0b86dd29648f9150646f00f54502676df9013 Signed-off-by: zhang sanshan --- lib/avb/libavb/avb_hashtree_descriptor.h | 83 ++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 lib/avb/libavb/avb_hashtree_descriptor.h (limited to 'lib/avb/libavb/avb_hashtree_descriptor.h') diff --git a/lib/avb/libavb/avb_hashtree_descriptor.h b/lib/avb/libavb/avb_hashtree_descriptor.h new file mode 100644 index 0000000..a5aafbf --- /dev/null +++ b/lib/avb/libavb/avb_hashtree_descriptor.h @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#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 + +/* 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. + */ +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; + uint8_t reserved[64]; +} 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_ */ -- cgit v1.1