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Diffstat (limited to 'genisoimage/sunlabel.h')
| -rw-r--r-- | genisoimage/sunlabel.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/genisoimage/sunlabel.h b/genisoimage/sunlabel.h new file mode 100644 index 0000000..243e9bb --- /dev/null +++ b/genisoimage/sunlabel.h @@ -0,0 +1,206 @@ +/* + * 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 */ +}; |