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/*
* Copyright (c) 2008 Vreixo Formoso
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* or later as published by the Free Software Foundation.
* See COPYING file for details.
*/
/*
* Functions for dealing with the system area, this is, the first 16 blocks
* of the image.
*
* At this time, this is only used for hybrid boot images with isolinux.
*/
#ifndef SYSTEM_AREA_H_
#define SYSTEM_AREA_H_
#include "ecma119.h"
/*
* Create a MBR for an isohybrid enabled ISOLINUX boot image.
*
* It is assumed that the caller has verified the readiness of the boot image
* by checking for 0xfb 0xc0 0x78 0x70 at bytes 0x40 to 0x43 of isolinux.bin.
*
* @param bin_lba The predicted LBA of isolinux.bin within the emerging ISO.
* @param img_blocks The predicted number of 2048 byte blocks in the ISO.
* It will get rounded up to full MBs and that many blocks
* must really be written as ISO 9660 image.
* @param mbr A buffer of at least 512 bytes to take the result which is
* to be written as the very beginning of the ISO.
* @param flag unused yet, submit 0
* @return <0 = fatal, 0 = failed , 1 = ok , 2 = ok with size warning
*/
int make_isohybrid_mbr(int bin_lba, int *img_blocks, char *mbr, int flag);
/**
* Write the system area for the given image to the given buffer.
*
* @param buf
* A buffer with at least 32 K allocated
* @return
* 1 if success, < 0 on error
*/
int iso_write_system_area(Ecma119Image *t, uint8_t *buf);
#endif /* SYSTEM_AREA_H_ */