1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Permission is hereby granted, free of charge, to any person 5 * obtaining a copy of this software and associated documentation 6 * files (the "Software"), to deal in the Software without 7 * restriction, including without limitation the rights to use, copy, 8 * modify, merge, publish, distribute, sublicense, and/or sell copies 9 * of the Software, and to permit persons to whom the Software is 10 * furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #if !defined(AVB_INSIDE_LIBAVB_H) && !defined(AVB_COMPILATION) 26 #error "Never include this file directly, include libavb.h instead." 27 #endif 28 29 #ifndef AVB_CHAIN_PARTITION_DESCRIPTOR_H_ 30 #define AVB_CHAIN_PARTITION_DESCRIPTOR_H_ 31 32 #include "avb_descriptor.h" 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* A descriptor containing a pointer to signed integrity data stored 39 * on another partition. The descriptor contains the partition name in 40 * question (without the A/B suffix), the public key used to sign the 41 * integrity data, and rollback index location to use for rollback 42 * protection. 43 * 44 * Following this struct are |partition_name_len| bytes of the 45 * partition name (UTF-8 encoded) and |public_key_len| bytes of the 46 * public key. 47 * 48 * The |reserved| field is for future expansion and must be set to NUL 49 * bytes. 50 */ 51 typedef struct AvbChainPartitionDescriptor { 52 AvbDescriptor parent_descriptor; 53 uint32_t rollback_index_location; 54 uint32_t partition_name_len; 55 uint32_t public_key_len; 56 uint8_t reserved[64]; 57 } AVB_ATTR_PACKED AvbChainPartitionDescriptor; 58 59 /* Copies |src| to |dest| and validates, byte-swapping fields in the 60 * process if needed. Returns true if valid, false if invalid. 61 * 62 * Data following the struct is not validated nor copied. 63 */ 64 bool avb_chain_partition_descriptor_validate_and_byteswap( 65 const AvbChainPartitionDescriptor* src, 66 AvbChainPartitionDescriptor* dest) AVB_ATTR_WARN_UNUSED_RESULT; 67 68 #ifdef __cplusplus 69 } 70 #endif 71 72 #endif /* AVB_CHAIN_PARTITION_DESCRIPTOR_H_ */ 73