| /* |
| * 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_FOOTER_H_ |
| #define AVB_FOOTER_H_ |
| |
| #include "avb_sysdeps.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* Magic for the footer. */ |
| #define AVB_FOOTER_MAGIC "AVBf" |
| #define AVB_FOOTER_MAGIC_LEN 4 |
| |
| /* Size of the footer. */ |
| #define AVB_FOOTER_SIZE 64 |
| |
| /* The current footer version used - keep in sync with avbtool. */ |
| #define AVB_FOOTER_VERSION_MAJOR 1 |
| #define AVB_FOOTER_VERSION_MINOR 0 |
| |
| /* The struct used as a footer used on partitions, used to find the |
| * AvbVBMetaImageHeader struct. This struct is always stored at the |
| * end of a partition. |
| */ |
| typedef struct AvbFooter { |
| /* 0: Four bytes equal to "AVBf" (AVB_FOOTER_MAGIC). */ |
| uint8_t magic[AVB_FOOTER_MAGIC_LEN]; |
| /* 4: The major version of the footer struct. */ |
| uint32_t version_major; |
| /* 8: The minor version of the footer struct. */ |
| uint32_t version_minor; |
| |
| /* 12: The original size of the image on the partition. */ |
| uint64_t original_image_size; |
| |
| /* 20: The offset of the |AvbVBMetaImageHeader| struct. */ |
| uint64_t vbmeta_offset; |
| |
| /* 28: The size of the vbmeta block (header + auth + aux blocks). */ |
| uint64_t vbmeta_size; |
| |
| /* 36: Padding to ensure struct is size AVB_FOOTER_SIZE bytes. This |
| * must be set to zeroes. |
| */ |
| uint8_t reserved[28]; |
| } AVB_ATTR_PACKED AvbFooter; |
| |
| /* Copies |src| to |dest| and validates, byte-swapping fields in the |
| * process if needed. Returns true if valid, false if invalid. |
| */ |
| bool avb_footer_validate_and_byteswap(const AvbFooter* src, AvbFooter* dest) |
| AVB_ATTR_WARN_UNUSED_RESULT; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* AVB_FOOTER_H_ */ |
