/* vi:set cindent tabstop=2 shiftwidth=2: */
/*
 * libvxfs - library for reading Veritas Journaled FileSystem (VxFS)
 * Copyright (c) 1999 Martin Hinner <mhi@penguin.cz>
 *
 * uw_vtoc.h: UnixWare 2 and 7 vtoc
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id$
 */
#ifndef __UW_VTOC_H
#define __UW_VTOC_H

#define VTOC_SECTOR         29
#define VTOC_DOSTYPE        0x63		/* UnixWare / SCO Unix / SysV / GNU HURD */
#define VTOC_BSIZE          512
#define V_NUMPAR            16			/* VTOC contains 16 partitions */


/* This structure comes from genhd.h, Copyright (C) 1992 Drew Eckhardt */
struct uw_dospt {
       __u8 code[0x1be];			 /* MBR code */
struct part {
        __u8 boot_ind;         /* 0x80 - active */
        __u8 head;             /* starting head */
        __u8 sector;           /* starting sector */
				__u8 cyl;              /* starting cylinder */
				__u8 sys_ind;          /* What partition type */
				__u8 end_head;         /* end head */
				__u8 end_sector;       /* end sector */
				__u8 end_cyl;          /* end cylinder */
				__u32 start_sect;      /* starting sector counting from 0 */
				__u32 nr_sects;        /* nr of sectors in partition */
} part[4];
				__u16 magic;
} __attribute__((packed));
																																								

struct uw_partition
	{
		__u16 tag;									/* ID tag of partition */
		__u16 flag;									/* Permission flags */
		__u32 start;								/* Start sector of partition */
		__u32 size;									/* Number of blocks in parition */
	};

struct uw_vtoc
	{
		__u32 sanity;								/* to verify vtoc sanity */
		__u32 version;							/* layout version */
		__u8 name[8];								/* volume name */
		__u16 nparts;								/* Number of partitions */
		__u16 pad;									/* 4 byte align */
		__u32 reserved[10];					/* ?? */
		struct uw_partition part[V_NUMPAR];		/* Partitions */
		__u32 timestamp[V_NUMPAR];	/* Time stamp ? */
	};
	
struct uw_disklabel {
        __u32   type;                 /* drive type */
        __u32   magic;                /* the magic number */
        __u32   version;              /* version number */
        char    serial[12];           /* serial number of the device */
        __u32   ncylinders;           /* # of data cylinders per device */
        __u32   ntracks;              /* # of tracks per cylinder */
        __u32   nsectors;             /* # of data sectors per track */
        __u32   secsize;              /* # of bytes per sector */
        __u32   part_start;           /* # of first sector of this partition */
        __u32   unknown1[12];         /* ? */
        __u32   alt_tbl;              /* byte offset of alternate table */
        __u32   alt_len;              /* byte length of alternate table */
        __u32   phys_cyl;             /* # of physical cylinders per device */
        __u32   phys_trk;             /* # of physical tracks per cylinder */
        __u32   phys_sec;             /* # of physical sectors per track */
        __u32   phys_bytes;           /* # of physical bytes per sector */
        __u32   unknown2;             /* ? */
        __u32   unknown3;             /* ? */
        __u32   pad[8];               /* pad */
				struct uw_vtoc vtoc;
};

#define VTOC_SANE               0x600DDEEEUL    /* Indicates a sane VTOC */
#define UNIXWARE_DISKMAGIC      0xCA5E600DUL    /* The disk magic number */

/* Partition identification tags */
#define V_UNUSED        0x00		/* Unused slice */
#define V_BOOT          0x01		/* Boot slice */
#define V_ROOT          0x02		/* Root filesystem */
#define V_SWAP          0x03		/* Swap filesystem */
#define V_USR           0x04		/* Usr filesystem */
#define V_BACKUP        0x05		/* Full disk */
#define V_ALTS          0x06		/* Alternate sector space */
#define V_OTHER         0x07		/* Non-unix space */
#define V_ALTTRK        0x08		/* Alternate track space */
#define V_STAND         0x09		/* Stand slice */
#define V_VAR           0x0A		/* Var slice */
#define V_HOME          0x0B		/* Home slice */
#define V_DUMP          0x0C		/* Dump slice */
#define V_ALTSCTR       0x0D		/* Alternate sector slice */
#define V_MANAGED_1     0x0E		/* Volume management public slice */
#define V_MANAGED_2     0x0F		/* Volume management private slice */

/* Partition permission flags */
#define V_UNMNT         0x0001	/* Unmountable partition */
#define V_RONLY         0x0010	/* Read only */
#define V_REMAP         0x0020	/* Do alternate sector mapping */
#define V_OPEN          0x0100	/* Partition open (for driver use) */
#define V_VALID         0x0200	/* Partition is valid to use */

#endif /* __UW_VTOC_H */