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