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cd9660_eltorito.h

/*    $NetBSD: cd9660_eltorito.h,v 1.4 2005/10/30 07:33:57 dyoung Exp $ */

/*
 * Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan
 * Perez-Rathke and Ram Vedam.  All rights reserved.
 *
 * This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys,
 * Alan Perez-Rathke and Ram Vedam.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN
 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN
 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */

#ifndef _CD9660_ELTORITO_H_
#define _CD9660_ELTORITO_H_

/* Boot defines */
#define     ET_ID       "EL TORITO SPECIFICATION"
#define     ET_SYS_X86  0
#define     ET_SYS_PPC  1
#define     ET_SYS_MAC  2

#define ET_BOOT_ENTRY_SIZE 0x20

#define     ET_BOOTABLE       0x88
#define     ET_NOT_BOOTABLE   0

#define     ET_MEDIA_NOEM     0
#define     ET_MEDIA_12FDD                1
#define     ET_MEDIA_144FDD               2
#define     ET_MEDIA_288FDD               3
#define     ET_MEDIA_HDD                  4

#define ET_INDICATOR_HEADERMORE     0x90
#define ET_INDICATOR_HEADERLAST     0x91
#define ET_INDICATOR_EXTENSION      0x44

/*** Boot Structures ***/

typedef struct _boot_volume_descriptor {
      u_char boot_record_indicator  [ISODCL(0x00,0x00)];
      u_char identifier       [ISODCL(0x01,0x05)];
      u_char version                [ISODCL(0x06,0x06)];
      u_char boot_system_identifier [ISODCL(0x07,0x26)];
      u_char unused1                [ISODCL(0x27,0x46)];
      u_char boot_catalog_pointer   [ISODCL(0x47,0x4A)];
      u_char unused2                [ISODCL(0x4B,0x7FF)];
} boot_volume_descriptor;

typedef struct _boot_catalog_validation_entry {
      u_char header_id        [ISODCL(0x00,0x00)];
      u_char platform_id            [ISODCL(0x01,0x01)];
      u_char reserved1        [ISODCL(0x02,0x03)];
      u_char manufacturer           [ISODCL(0x04,0x1B)];
      u_char checksum               [ISODCL(0x1C,0x1D)];
      u_char key              [ISODCL(0x1E,0x1F)];
} boot_catalog_validation_entry;

typedef struct _boot_catalog_initial_entry {
      u_char boot_indicator         [ISODCL(0x00,0x00)];
      u_char media_type       [ISODCL(0x01,0x01)];
      u_char load_segment           [ISODCL(0x02,0x03)];
      u_char system_type            [ISODCL(0x04,0x04)];
      u_char unused_1               [ISODCL(0x05,0x05)];
      u_char sector_count           [ISODCL(0x06,0x07)];
      u_char load_rba               [ISODCL(0x08,0x0B)];
      u_char unused_2               [ISODCL(0x0C,0x1F)];
} boot_catalog_initial_entry;

#define ET_SECTION_HEADER_MORE            0x90
#define ET_SECTION_HEADER_LAST            0x91

typedef struct _boot_catalog_section_header {
      u_char header_indicator       [ISODCL(0x00,0x00)];
      u_char platform_id            [ISODCL(0x01,0x01)];
      u_char num_section_entries    [ISODCL(0x02,0x03)];
      u_char id_string        [ISODCL(0x04,0x1F)];
} boot_catalog_section_header;

typedef struct _boot_catalog_section_entry {
      u_char boot_indicator         [ISODCL(0x00,0x00)];
      u_char media_type       [ISODCL(0x01,0x01)];
      u_char load_segment           [ISODCL(0x02,0x03)];
      u_char system_type            [ISODCL(0x04,0x04)];
      u_char unused_1               [ISODCL(0x05,0x05)];
      u_char sector_count           [ISODCL(0x06,0x07)];
      u_char load_rba               [ISODCL(0x08,0x0B)];
      u_char selection_criteria     [ISODCL(0x0C,0x0C)];
      u_char vendor_criteria        [ISODCL(0x0D,0x1F)];
} boot_catalog_section_entry;

typedef struct _boot_catalog_section_entry_extension {
      u_char extension_indicator    [ISODCL(0x00,0x00)];
      u_char flags                  [ISODCL(0x01,0x01)];
      u_char vendor_criteria        [ISODCL(0x02,0x1F)];
} boot_catalog_section_entry_extension;

#define ET_ENTRY_VE 1
#define ET_ENTRY_IE 2
#define ET_ENTRY_SH 3
#define ET_ENTRY_SE 4
#define ET_ENTRY_EX 5

struct boot_catalog_entry {
      char entry_type;
      union {
            boot_catalog_validation_entry       VE;
            boot_catalog_initial_entry          IE;
            boot_catalog_section_header         SH;
            boot_catalog_section_entry          SE;
            boot_catalog_section_entry_extension      EX;
      } entry_data;

      LIST_ENTRY(boot_catalog_entry) ll_struct;
};

/* Temporary structure */
struct cd9660_boot_image {
      char *filename;
      int size;
      int sector;                   /* copied to LoadRBA */
      int num_sectors;
      unsigned int loadSegment;
      u_char targetMode;
      u_char system;
      u_char bootable;
      /*
       * If the boot image exists in the filesystem
       * already, this is a pointer to that node. For the sake
       * of simplicity in future versions, this pointer is only
       * to the node in the primary volume. This SHOULD be done
       * via a hashtable lookup.
       */
      struct _cd9660node *boot_image_node;
      TAILQ_ENTRY(cd9660_boot_image) image_list;
      int serialno;
};


#endif /* _CD9660_ELTORITO_H_ */


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