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