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/*
* Copyright (c) 2007 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.
*/
/**
* Declare El-Torito related structures.
* References:
* "El Torito" Bootable CD-ROM Format Specification Version 1.0 (1995)
*/
#ifndef LIBISO_ELTORITO_H
#define LIBISO_ELTORITO_H
#include "ecma119.h"
#include "node.h"
/**
* A node that acts as a placeholder for an El-Torito catalog.
*/
struct Iso_Boot
{
IsoNode node;
};
struct el_torito_boot_catalog {
IsoBoot *node; /* node of the catalog */
struct el_torito_boot_image *image; /* default boot image */
};
struct el_torito_boot_image {
IsoFile *image;
unsigned int bootable:1; /**< If the entry is bootable. */
/**
* isolinux options
* bit 0 -> whether to patch image
* bit 1 -> whether to create isolinux image
*/
unsigned int isolinux_options:2;
unsigned char type; /**< The type of image */
unsigned char partition_type; /**< type of partition for HD-emul images */
short load_seg; /**< Load segment for the initial boot image. */
short load_size; /**< Number of sectors to load. */
};
/** El-Torito, 2.1 */
struct el_torito_validation_entry {
uint8_t header_id BP(1, 1);
uint8_t platform_id BP(2, 2);
uint8_t reserved BP(3, 4);
uint8_t id_string BP(5, 28);
uint8_t checksum BP(29, 30);
uint8_t key_byte1 BP(31, 31);
uint8_t key_byte2 BP(32, 32);
};
/** El-Torito, 2.2 */
struct el_torito_default_entry {
uint8_t boot_indicator BP(1, 1);
uint8_t boot_media_type BP(2, 2);
uint8_t load_seg BP(3, 4);
uint8_t system_type BP(5, 5);
uint8_t unused1 BP(6, 6);
uint8_t sec_count BP(7, 8);
uint8_t block BP(9, 12);
uint8_t unused2 BP(13, 32);
};
/** El-Torito, 2.3 */
struct el_torito_section_header {
uint8_t header_indicator BP(1, 1);
uint8_t platform_id BP(2, 2);
uint8_t number BP(3, 4);
uint8_t character BP(5, 32);
};
/** El-Torito, 2.4 */
struct el_torito_section_entry {
uint8_t boot_indicator BP(1, 1);
uint8_t boot_media_type BP(2, 2);
uint8_t load_seg BP(3, 4);
uint8_t system_type BP(5, 5);
uint8_t unused1 BP(6, 6);
uint8_t sec_count BP(7, 8);
uint8_t block BP(9, 12);
uint8_t selec_criteria BP(13, 13);
uint8_t vendor_sc BP(14, 32);
};
void el_torito_boot_catalog_free(struct el_torito_boot_catalog *cat);
/**
* Create a IsoFileSrc for writing the el-torito catalog for the given
* target, and add it to target. If the target already has a src for the
* catalog, it just returns.
*/
int el_torito_catalog_file_src_create(Ecma119Image *target, IsoFileSrc **src);
/**
* Create a writer for el-torito information.
*/
int eltorito_writer_create(Ecma119Image *target);
#endif /* LIBISO_ELTORITO_H */