| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef __ARCHIVE_H |
| #define __ARCHIVE_H |
| |
| #include <stdint.h> |
| |
| /* |
| * Archive file layout: |
| * |
| * +----------------------------------+ |
| * | root header | |
| * +----------------------------------+ |
| * | file_header[0] | |
| * +----------------------------------+ |
| * | file_header[1] | |
| * +----------------------------------+ |
| * | ... | |
| * +----------------------------------+ |
| * | file_header[count-1] | |
| * +----------------------------------+ |
| * | file(0) content | |
| * +----------------------------------+ |
| * | file(1) content | |
| * +----------------------------------+ |
| * | ... | |
| * +----------------------------------+ |
| * | file(count-1) content | |
| * +----------------------------------+ |
| */ |
| |
| #define VERSION 0 |
| #define CBAR_MAGIC "CBAR" |
| #define NAME_LENGTH 32 |
| |
| /* Root header */ |
| struct directory { |
| char magic[4]; |
| uint32_t version; /* version of the header. little endian */ |
| uint32_t size; /* total size of archive. little endian */ |
| uint32_t count; /* number of files. little endian */ |
| }; |
| |
| /* File header */ |
| struct dentry { |
| /* file name. null-terminated if shorter than NAME_LENGTH */ |
| char name[NAME_LENGTH]; |
| /* file offset from the root header. little endian */ |
| uint32_t offset; |
| /* file size. little endian */ |
| uint32_t size; |
| }; |
| |
| static inline struct dentry *get_first_dentry(const struct directory *dir) |
| { |
| return (struct dentry *)(dir + 1); |
| } |
| |
| static inline uint32_t get_first_offset(const struct directory *dir) |
| { |
| return sizeof(struct directory) + sizeof(struct dentry) * dir->count; |
| } |
| |
| #endif |