92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
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/*
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*
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* Copyright (C) 2015 The ChromiumOS Authors. All rights reserved.
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* written by Daisuke Nojiri <dnojiri@chromium.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __ARCHIVE_H
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#define __ARCHIVE_H
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#include <stdint.h>
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/*
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* Archive file layout:
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*
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* +----------------------------------+
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* | root header |
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* +----------------------------------+
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* | file_header[0] |
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* +----------------------------------+
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* | file_header[1] |
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* +----------------------------------+
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* | ... |
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* +----------------------------------+
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* | file_header[count-1] |
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* +----------------------------------+
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* | file(0) content |
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* +----------------------------------+
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* | file(1) content |
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* +----------------------------------+
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* | ... |
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* +----------------------------------+
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* | file(count-1) content |
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* +----------------------------------+
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*/
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#define VERSION 0
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#define CBAR_MAGIC "CBAR"
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#define NAME_LENGTH 32
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/* Root header */
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struct directory {
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char magic[4];
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uint32_t version; /* version of the header. little endian */
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uint32_t size; /* total size of archive. little endian */
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uint32_t count; /* number of files. little endian */
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};
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/* File header */
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struct dentry {
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/* file name. null-terminated if shorter than NAME_LENGTH */
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char name[NAME_LENGTH];
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/* file offset from the root header. little endian */
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uint32_t offset;
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/* file size. little endian */
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uint32_t size;
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};
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static inline struct dentry *get_first_dentry(const struct directory *dir)
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{
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return (struct dentry *)(dir + 1);
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}
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static inline uint32_t get_first_offset(const struct directory *dir)
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{
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return sizeof(struct directory) + sizeof(struct dentry) * dir->count;
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}
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#endif
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