/*	$OpenBSD: disklabel.h,v 1.7 2015/09/30 14:57:03 krw Exp $	*/

/*
 * Copyright (c) 1994 Christopher G. Demetriou
 * All rights reserved.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Christopher G. Demetriou.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 _MACHINE_DISKLABEL_H_
#define _MACHINE_DISKLABEL_H_

#define	LABELSECTOR	1	/* sector containing label */
#define	LABELOFFSET	0	/* offset of label in sector */
#define	MAXPARTITIONS	16	/* number of partitions */

/*
 * SGI Volume Header.
 */

#define SGILABEL_MAGIC  0xbe5a941
#define SGI_SIZE_VOLDIR 15

/* Partition types. */
#define SGI_PTYPE_VOLHDR        0
#define SGI_PTYPE_RAW           3
#define SGI_PTYPE_BSD           4
#define SGI_PTYPE_VOLUME        6
#define SGI_PTYPE_EFS           7
#define SGI_PTYPE_LVOL          8
#define SGI_PTYPE_RLVOL         9
#define SGI_PTYPE_XFS           10
#define SGI_PTYPE_XFSLOG        11
#define SGI_PTYPE_XLV           12
#define SGI_PTYPE_XVM           13

/* Device parameters. */
struct devparms {
        u_int8_t        dp_skew;
        u_int8_t        dp_gap1;
        u_int8_t        dp_gap2;
        u_int8_t        dp_spares_cyl;
        u_int16_t       dp_cyls;
        u_int16_t       dp_shd0;
        u_int16_t       dp_trks0;
        u_int8_t        dp_ctq_depth;
        u_int8_t        dp_cylshi;
        u_int16_t       dp_unused;
        u_int16_t       dp_secs;
        u_int16_t       dp_secbytes;
        u_int16_t       dp_interleave;
        u_int32_t       dp_flags;
        u_int32_t       dp_datarate;
        u_int32_t       dp_nretries;
        u_int32_t       dp_mspw;
        u_int16_t       dp_xgap1;
        u_int16_t       dp_xsync;
        u_int16_t       dp_xrdly;
        u_int16_t       dp_xgap2;
        u_int16_t       dp_xrgate;
        u_int16_t       dp_xwcont;
} __packed;

/* SGI volume header. */
struct sgilabel {
	u_int32_t       magic;
	int16_t         root;
	int16_t         swap;
	char            bootfile[16];
	struct devparms dp;
	struct {
		char	name[8];
		int32_t	block;
		int32_t	bytes;
	} voldir[SGI_SIZE_VOLDIR];
	struct {
		int32_t	blocks;
		int32_t	first;
		int32_t	type;
	} partitions[MAXPARTITIONS];
	int32_t         checksum;
	int32_t         _pad;
} __packed;

#endif /* _MACHINE_DISKLABEL_H_ */
