usr.sbin/makefs/cd9660/cd9660_eltorito.h

   1 /*      $NetBSD: cd9660_eltorito.h,v 1.5 2009/07/04 14:31:38 ahoka Exp $        */
   2
   3 /*-
   4  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
   5  *
   6  * Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan
   7  * Perez-Rathke and Ram Vedam.  All rights reserved.
   8  *
   9  * This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys,
  10  * Alan Perez-Rathke and Ram Vedam.
  11  *
  12  * Redistribution and use in source and binary forms, with or
  13  * without modification, are permitted provided that the following
  14  * conditions are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above
  18  *    copyright notice, this list of conditions and the following
  19  *    disclaimer in the documentation and/or other materials provided
  20  *    with the distribution.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN
  23  * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  26  * DISCLAIMED.  IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN
  27  * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT,
  28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  30  * USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  31  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  32  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  34  * OF SUCH DAMAGE.
  35  *
  36  * $FreeBSD$
  37  */
  38
  39 #ifndef _CD9660_ELTORITO_H_
  40 #define _CD9660_ELTORITO_H_
  41
  42 /* Boot defines */
  43 #define ET_ID           "EL TORITO SPECIFICATION"
  44 #define ET_SYS_X86      0
  45 #define ET_SYS_PPC      1
  46 #define ET_SYS_MAC      2
  47
  48 #define ET_BOOT_ENTRY_SIZE 0x20
  49
  50 #define ET_BOOTABLE             0x88
  51 #define ET_NOT_BOOTABLE 0
  52
  53 #define ET_MEDIA_NOEM   0
  54 #define ET_MEDIA_12FDD                  1
  55 #define ET_MEDIA_144FDD                 2
  56 #define ET_MEDIA_288FDD                 3
  57 #define ET_MEDIA_HDD                    4
  58
  59 #define ET_INDICATOR_HEADERMORE 0x90
  60 #define ET_INDICATOR_HEADERLAST 0x91
  61 #define ET_INDICATOR_EXTENSION  0x44
  62
  63 /*** Boot Structures ***/
  64
  65 typedef struct _boot_volume_descriptor {
  66         u_char boot_record_indicator    [ISODCL(0x00,0x00)];
  67         u_char identifier               [ISODCL(0x01,0x05)];
  68         u_char version                  [ISODCL(0x06,0x06)];
  69         u_char boot_system_identifier   [ISODCL(0x07,0x26)];
  70         u_char unused1                  [ISODCL(0x27,0x46)];
  71         u_char boot_catalog_pointer     [ISODCL(0x47,0x4A)];
  72         u_char unused2                  [ISODCL(0x4B,0x7FF)];
  73 } boot_volume_descriptor;
  74
  75 typedef struct _boot_catalog_validation_entry {
  76         u_char header_id                [ISODCL(0x00,0x00)];
  77         u_char platform_id              [ISODCL(0x01,0x01)];
  78         u_char reserved1                [ISODCL(0x02,0x03)];
  79         u_char manufacturer             [ISODCL(0x04,0x1B)];
  80         u_char checksum                 [ISODCL(0x1C,0x1D)];
  81         u_char key                      [ISODCL(0x1E,0x1F)];
  82 } boot_catalog_validation_entry;
  83
  84 typedef struct _boot_catalog_initial_entry {
  85         u_char boot_indicator           [ISODCL(0x00,0x00)];
  86         u_char media_type               [ISODCL(0x01,0x01)];
  87         u_char load_segment             [ISODCL(0x02,0x03)];
  88         u_char system_type              [ISODCL(0x04,0x04)];
  89         u_char unused_1                 [ISODCL(0x05,0x05)];
  90         u_char sector_count             [ISODCL(0x06,0x07)];
  91         u_char load_rba                 [ISODCL(0x08,0x0B)];
  92         u_char unused_2                 [ISODCL(0x0C,0x1F)];
  93 } boot_catalog_initial_entry;
  94
  95 #define ET_SECTION_HEADER_MORE          0x90
  96 #define ET_SECTION_HEADER_LAST          0x91
  97
  98 typedef struct _boot_catalog_section_header {
  99         u_char header_indicator         [ISODCL(0x00,0x00)];
 100         u_char platform_id              [ISODCL(0x01,0x01)];
 101         u_char num_section_entries      [ISODCL(0x02,0x03)];
 102         u_char id_string                [ISODCL(0x04,0x1F)];
 103 } boot_catalog_section_header;
 104
 105 typedef struct _boot_catalog_section_entry {
 106         u_char boot_indicator           [ISODCL(0x00,0x00)];
 107         u_char media_type               [ISODCL(0x01,0x01)];
 108         u_char load_segment             [ISODCL(0x02,0x03)];
 109         u_char system_type              [ISODCL(0x04,0x04)];
 110         u_char unused_1                 [ISODCL(0x05,0x05)];
 111         u_char sector_count             [ISODCL(0x06,0x07)];
 112         u_char load_rba                 [ISODCL(0x08,0x0B)];
 113         u_char selection_criteria       [ISODCL(0x0C,0x0C)];
 114         u_char vendor_criteria          [ISODCL(0x0D,0x1F)];
 115 } boot_catalog_section_entry;
 116
 117 typedef struct _boot_catalog_section_entry_extension {
 118         u_char extension_indicator      [ISODCL(0x00,0x00)];
 119         u_char flags                    [ISODCL(0x01,0x01)];
 120         u_char vendor_criteria          [ISODCL(0x02,0x1F)];
 121 } boot_catalog_section_entry_extension;
 122
 123 #define ET_ENTRY_VE 1
 124 #define ET_ENTRY_IE 2
 125 #define ET_ENTRY_SH 3
 126 #define ET_ENTRY_SE 4
 127 #define ET_ENTRY_EX 5
 128
 129 struct boot_catalog_entry {
 130         char entry_type;
 131         union {
 132                 boot_catalog_validation_entry           VE;
 133                 boot_catalog_initial_entry              IE;
 134                 boot_catalog_section_header             SH;
 135                 boot_catalog_section_entry              SE;
 136                 boot_catalog_section_entry_extension    EX;
 137         } entry_data;
 138
 139         LIST_ENTRY(boot_catalog_entry) ll_struct;
 140 };
 141
 142 /* Temporary structure */
 143 struct cd9660_boot_image {
 144         char *filename;
 145         int size;
 146         int sector;                     /* copied to LoadRBA */
 147         int num_sectors;
 148         unsigned int loadSegment;
 149         u_char targetMode;
 150         u_char system;
 151         u_char bootable;
 152         /*
 153          * If the boot image exists in the filesystem
 154          * already, this is a pointer to that node. For the sake
 155          * of simplicity in future versions, this pointer is only
 156          * to the node in the primary volume. This SHOULD be done
 157          * via a hashtable lookup.
 158          */
 159         struct _cd9660node *boot_image_node;
 160         TAILQ_ENTRY(cd9660_boot_image) image_list;
 161         int serialno;
 162 };
 163
 164
 165 #endif /* _CD9660_ELTORITO_H_ */
 166