/* * This file has been modified for the cdrkit suite. * * The behaviour and appearence of the program code below can differ to a major * extent from the version distributed by the original author(s). * * For details, see Changelog file distributed with the cdrkit package. If you * received this file from another source then ask the distributing person for * a log of modifications. * */ /* @(#)sunlabel.h 1.5 03/12/28 Copyright 1999-2003 J. Schilling */ /* * Support for Sun disk label * * Copyright (c) 1999-2003 J. Schilling */ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with * this program; see the file COPYING. If not, write to the Free Software * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef howmany #define howmany(x, y) (((x)+((y)-1))/(y)) #endif #ifndef roundup #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) #endif #define NDKMAP 8 /* # of sparc partitions */ #define NX86MAP 16 /* # if x86 partitions */ #define DKL_MAGIC 0xDABE /* magic number */ #define DKL_MAGIC_0 0xDA /* magic number high byte */ #define DKL_MAGIC_1 0xBE /* magic number low byte */ #define CD_DEFLABEL "CD-ROM Disc with Sun sparc boot created by genisoimage" #define CD_X86LABEL "CD-ROM Disc with Sun x86 boot created by genisoimage" /* * Define a virtual geometry for the CD disk label. * The current values are stolen from Sun install disks and do not seem to be * a good idea as they limit the size of the CD to 327680 sectors which is less * than 74 minutes. * There are 84 minute CD's with 378000 sectors and there will be DVD's with * even more. */ #define CD_RPM 350 #define CD_PCYL 2048 #define CD_APC 0 #define CD_INTRLV 1 #define CD_NCYL 2048 #define CD_ACYL 0 #define CD_NHEAD 1 #define CD_NSECT 640 /* * NOTE: The virtual cylinder size on CD must be a mutiple of 2048. * This is true if CD_NSECT is a multiple of 4. */ #define CD_CYLSIZE (CD_NSECT*CD_NHEAD*512) #define V_VERSION 1 /* The VTOC version */ #define VTOC_SANE 0x600DDEEE /* Indicates a sane VTOC */ #define V_ROOT 0x02 /* Root partiton */ #define V_USR 0x04 /* Usr partiton */ #define V_RONLY 0x10 /* Read only */ /* * The Sun sparc disk label (at offset 0 on a disk) */ struct sun_label { char dkl_ascilabel[128]; struct dk_vtoc { Uchar v_version[4]; /* layout version */ char v_volume[8]; /* volume name */ Uchar v_nparts[2]; /* number of partitions */ struct dk_map2 { Uchar p_tag[2]; /* ID tag of partition */ Uchar p_flag[2]; /* permission flag */ } v_part[NDKMAP]; Uchar v_xxpad[2]; /* To come over Sun's alignement problem */ Uchar v_bootinfo[3*4]; /* info for mboot */ Uchar v_sanity[4]; /* to verify vtoc sanity */ Uchar v_reserved[10*4]; Uchar v_timestamp[NDKMAP*4]; } dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */ char dkl_pad[512-(128+sizeof (struct dk_vtoc)+NDKMAP*8+14*2)]; Uchar dkl_rpm[2]; /* rotations per minute */ Uchar dkl_pcyl[2]; /* # physical cylinders */ Uchar dkl_apc[2]; /* alternates per cylinder */ Uchar dkl_obs1[2]; /* obsolete */ Uchar dkl_obs2[2]; /* obsolete */ Uchar dkl_intrlv[2]; /* interleave factor */ Uchar dkl_ncyl[2]; /* # of data cylinders */ Uchar dkl_acyl[2]; /* # of alternate cylinders */ Uchar dkl_nhead[2]; /* # of heads in this partition */ Uchar dkl_nsect[2]; /* # of 512 byte sectors per track */ Uchar dkl_obs3[2]; /* obsolete */ Uchar dkl_obs4[2]; /* obsolete */ struct dk_map { /* logical partitions */ Uchar dkl_cylno[4]; /* starting cylinder */ Uchar dkl_nblk[4]; /* number of blocks */ } dkl_map[NDKMAP]; /* logical partition headers */ Uchar dkl_magic[2]; /* identifies this label format */ Uchar dkl_cksum[2]; /* xor checksum of sector */ }; /* * The Sun x86 / AT&T disk label (at offset 512 on a fdisk partition) */ struct x86_label { struct x86_vtoc { Uchar v_bootinfo[3*4]; /* unsupported */ Uchar v_sanity[4]; /* to verify vtoc sanity */ Uchar v_version[4]; /* layout version */ char v_volume[8]; /* volume name */ Uchar v_sectorsz[2]; /* # of bytes in a sector */ Uchar v_nparts[2]; /* # of partitions */ Uchar v_reserved[10*4]; struct dkl_partition { Uchar p_tag[2]; /* ID tag of partition */ Uchar p_flag[2]; /* permission flag */ Uchar p_start[4]; /* starting sector */ Uchar p_size[4]; /* number of blocks */ } v_part[NX86MAP]; Uchar timestamp[NX86MAP][4]; char v_asciilabel[128]; } dkl_vtoc; /* vtoc inclusions from AT&T SVr4 */ Uchar dkl_pcyl[4]; /* # physical cylinders */ Uchar dkl_ncyl[4]; /* # of data cylinders */ Uchar dkl_acyl[2]; /* # of alternate cylinders */ Uchar dkl_bcyl[2]; Uchar dkl_nhead[4]; /* # of heads in this partition */ Uchar dkl_nsect[4]; /* # of 512 byte sectors per track */ Uchar dkl_intrlv[2]; /* interleave factor */ Uchar dkl_skew[2]; Uchar dkl_apc[2]; /* alternates per cylinder */ Uchar dkl_rpm[2]; /* rotations per minute */ Uchar dkl_write_reinstruct[2]; Uchar dkl_read_reinstruct[2]; Uchar dkl_extra[4*2]; /* for later expansions */ char dkl_pad[512-(sizeof (struct x86_vtoc)+4*4+14*2)]; Uchar dkl_magic[2]; /* identifies this label format */ Uchar dkl_cksum[2]; /* xor checksum of sector */ }; /* * One x86 PC fdisk partition record. */ struct pc_pr { Uchar pr_status; /* Boot status */ Uchar pr_head; /* Starting head # */ char pr_sec_cyl[2]; /* Starting sec+cyl # */ Uchar pr_type; /* Partition type */ Uchar pr_e_head; /* Ending head # */ char pr_e_sec_cyl[2]; /* Ending sec+cyl # */ char pr_partoff[4]; /* Partition start sector # */ char pr_nsect[4]; /* # of sectors in partition */ }; /* * Flags and macros for above partition record. */ #define SEC_MASK 0x3F #define GET_SEC(a) ((a) & SEC_MASK) #define GET_CYL(a) ((((a) & 0xFF) >> 8) | (((a) & 0xC0) << 2)) #define STATUS_INACT 0 /* Marked non bootable */ #define STATUS_ACTIVE 0x80 /* Marked as bootable */ #define TYPE_FREE 0 /* Unused partition */ #define TYPE_DOS12 0x01 /* FAT12 fileystem */ #define TYPE_XENIX 0x02 /* XENIX root */ #define TYPE_XENIX2 0x03 /* XENIX usr */ #define TYPE_DOS16 0x04 /* FAT16 filesystem */ #define TYPE_XDOS 0x05 /* Extended DOS part */ #define TYPE_DOS4 0x06 /* FAT16 >= 32 MB */ #define TYPE_SOLARIS 0x82 /* Solaris x86 */ #define TYPE_SOLARIS_BOOT 0xBE /* Solaris boot */ #define TYPE_CDOS4 0xDB /* CPM */ /* * The first sector on a disk from a x86 PC (at offset 0 on a disk) */ struct pc_part { char bootcode[0x1BE]; /* Master boot record */ struct pc_pr part[4]; /* The 4 primary partitions */ Uchar magic[2]; /* Fixed at 0x55 0xAA */ };