141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2007 Vreixo Formoso
|
|
* Copyright (c) 2010 Thomas Schmitt
|
|
*
|
|
* 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;
|
|
};
|
|
|
|
/* Not more than 32 so that all entries fit into 2048 bytes */
|
|
#define Libisofs_max_boot_imageS 32
|
|
|
|
struct el_torito_boot_catalog {
|
|
IsoBoot *node; /* node of the catalog */
|
|
|
|
int num_bootimages;
|
|
struct el_torito_boot_image *bootimages[Libisofs_max_boot_imageS];
|
|
/* [0]= default boot image */
|
|
|
|
/* Weight value for image sorting */
|
|
int sort_weight;
|
|
};
|
|
|
|
struct el_torito_boot_image {
|
|
IsoFile *image;
|
|
|
|
unsigned int bootable:1; /**< If the entry is bootable. */
|
|
/**
|
|
* Whether the boot image seems to contain a boot_info_table
|
|
*/
|
|
unsigned int seems_boot_info_table:1;
|
|
/**
|
|
* isolinux options
|
|
* bit 0 -> whether to patch image
|
|
* bit 1 -> whether to put built-in isolinux 3.72 isohybrid-MBR into image
|
|
* System Area (deprecated)
|
|
*/
|
|
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. */
|
|
|
|
/* Byte 1 of Validation Entry or Section Header Entry:
|
|
0= 80x86, 1= PowerPC, 2= Mac, 0xef= EFI */
|
|
uint8_t platform_id;
|
|
uint8_t id_string[28];
|
|
uint8_t selection_crit[20];
|
|
};
|
|
|
|
/** 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 num_entries BP(3, 4);
|
|
uint8_t id_string 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);
|
|
|
|
/**
|
|
* Insert boot info table content into buf.
|
|
*
|
|
* @return
|
|
* 1 on success, 0 error (but continue), < 0 error
|
|
*/
|
|
int make_boot_info_table(uint8_t *buf, uint32_t pvd_lba,
|
|
uint32_t boot_lba, uint32_t imgsize);
|
|
|
|
|
|
#endif /* LIBISO_ELTORITO_H */
|