/* xz_stream.h - Definitions for handling the .xz file format */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 2010 Free Software Foundation, Inc. * * GRUB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GRUB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GRUB. If not, see <http://www.gnu.org/licenses/>. */ /* * This file is based on code from XZ embedded project * http://tukaani.org/xz/embedded.html */ #ifndef XZ_STREAM_H #define XZ_STREAM_H /* * See the .xz file format specification at * http://tukaani.org/xz/xz-file-format.txt * to understand the container format. */ #define STREAM_HEADER_SIZE 12 #define HEADER_MAGIC "\3757zXZ\0" #define HEADER_MAGIC_SIZE 6 #define FOOTER_MAGIC "YZ" #define FOOTER_MAGIC_SIZE 2 /* * Variable-length integer can hold a 63-bit unsigned integer, or a special * value to indicate that the value is unknown. */ typedef uint64_t vli_type; #define VLI_MAX ((vli_type)-1 / 2) #define VLI_UNKNOWN ((vli_type)-1) /* Maximum encoded size of a VLI */ #define VLI_BYTES_MAX (sizeof(vli_type) * 8 / 7) #endif