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/* vi: set sw=4 ts=4: */
/*
* (SEA)ttle i(MA)ge is the image which used in project seattle.
*
* Created by David Hsieh <david_hsieh@alphanetworks.com>
* Copyright (C) 2008-2009 Alpha Networks, Inc.
*
* This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either'
* version 2.1 of the License, or (at your option) any later version.
*
* The GNU C Library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the GNU C Library; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA.
*/
#ifndef __SEAMA_HEADER_FILE__
#define __SEAMA_HEADER_FILE__
#include <stdint.h>
#define SEAMA_MAGIC 0x5EA3A417
/*
* SEAMA looks like the following map.
* All the data of the header should be in network byte order.
*
* +-------------+-------------+------------
* | SEAMA magic | ^
* +-------------+-------------+ |
* | reserved | meta size | |
* +-------------+-------------+ header
* | image size (0 bytes) | |
* +-------------+-------------+ |
* ~ Meta data ~ v
* +-------------+-------------+------------
* | SEAMA magic | ^ ^
* +-------------+-------------+ | |
* | reserved | meta size | | |
* +-------------+-------------+ | |
* | image size | | |
* +-------------+-------------+ header |
* | | | |
* | 16 bytes of MD5 digest | | |
* | | | |
* | | | |
* +-------------+-------------+ | |
* ~ Meta data ~ v |
* +-------------+-------------+------- |
* | | |
* | Image of the 1st entity | |
* ~ ~ 1st entity
* | | |
* | | v
* +-------------+-------------+-------------
* | SEAMA magic | ^ ^
* +-------------+-------------+ | |
* | reserved | meta size | | |
* +-------------+-------------+ | |
* | image size | | |
* +-------------+-------------+ header |
* | | | |
* | 16 bytes of MD5 digest | | |
* | | | |
* | | | |
* +-------------+-------------+ | |
* ~ Meta data ~ v |
* +-------------+-------------+------- |
* | | |
* | Image of the 2nd entity | |
* ~ ~ 2nd entity
* | | |
* | | v
* +-------------+-------------+-------------
*/
/*
* SEAMA header
*
* |<-------- 32 bits -------->|
* +-------------+-------------+
* | SEAMA magic |
* +-------------+-------------+
* | reserved | meta size |
* +-------------+-------------+
* | image size |
* +-------------+-------------+
*/
/* seama header */
struct seama_entity_header {
uint32_t magic; /* should always be SEAMA_MAGIC. */
uint16_t reserved; /* reserved for */
uint16_t metasize; /* size of the META data */
uint32_t size; /* size of the image */
uint8_t md5[16];
} __attribute__ ((packed));
#endif
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