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/*
*
* Copyright (C) 2015 The ChromiumOS Authors. All rights reserved.
* written by Daisuke Nojiri <dnojiri@chromium.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#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
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