xref: /onnv-gate/usr/src/lib/libbc/inc/include/sun/dklabel.h (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
23*0Sstevel@tonic-gate 
24*0Sstevel@tonic-gate /*
25*0Sstevel@tonic-gate  * Copyright (c) 1987 by Sun Microsystems, Inc.
26*0Sstevel@tonic-gate  */
27*0Sstevel@tonic-gate 
28*0Sstevel@tonic-gate #ifndef _sun_dklabel_h
29*0Sstevel@tonic-gate #define	_sun_dklabel_h
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate /*
32*0Sstevel@tonic-gate  * Miscellaneous defines
33*0Sstevel@tonic-gate  */
34*0Sstevel@tonic-gate #define	DKL_MAGIC	0xDABE	/* magic number */
35*0Sstevel@tonic-gate #define	FKL_MAGIC	0xff	/* magic number for DOS floppies */
36*0Sstevel@tonic-gate #define	NDKMAP	8		/* # of logical partitions */
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate /*
39*0Sstevel@tonic-gate  * Format of a Sun SMD disk label.
40*0Sstevel@tonic-gate  * Resides in cylinder 0, head 0, sector 0.
41*0Sstevel@tonic-gate  *
42*0Sstevel@tonic-gate  * sizeof (struct dk_label) should be 512 (sector size)
43*0Sstevel@tonic-gate  */
44*0Sstevel@tonic-gate struct dk_label {
45*0Sstevel@tonic-gate 	char	dkl_asciilabel[128];	/* for compatibility */
46*0Sstevel@tonic-gate 	char	dkl_pad[512-(128+NDKMAP*8+14*2)];
47*0Sstevel@tonic-gate 	unsigned short	dkl_rpm;	/* rotations per minute */
48*0Sstevel@tonic-gate 	unsigned short	dkl_pcyl;	/* # physical cylinders */
49*0Sstevel@tonic-gate 	unsigned short	dkl_apc;	/* alternates per cylinder */
50*0Sstevel@tonic-gate 	unsigned short	dkl_obs1;	/* obsolete */
51*0Sstevel@tonic-gate 	unsigned short	dkl_obs2;	/* obsolete */
52*0Sstevel@tonic-gate 	unsigned short	dkl_intrlv;	/* interleave factor */
53*0Sstevel@tonic-gate 	unsigned short	dkl_ncyl;	/* # of data cylinders */
54*0Sstevel@tonic-gate 	unsigned short	dkl_acyl;	/* # of alternate cylinders */
55*0Sstevel@tonic-gate 	unsigned short	dkl_nhead;	/* # of heads in this partition */
56*0Sstevel@tonic-gate 	unsigned short	dkl_nsect;	/* # of 512 byte sectors per track */
57*0Sstevel@tonic-gate 	unsigned short	dkl_obs3;	/* obsolete */
58*0Sstevel@tonic-gate 	unsigned short	dkl_obs4;	/* obsolete */
59*0Sstevel@tonic-gate 	/* */
60*0Sstevel@tonic-gate 	struct dk_map {			/* logical partitions */
61*0Sstevel@tonic-gate 		daddr_t	dkl_cylno;	/* starting cylinder */
62*0Sstevel@tonic-gate 		daddr_t dkl_nblk;	/* number of blocks */
63*0Sstevel@tonic-gate 	} dkl_map[NDKMAP];
64*0Sstevel@tonic-gate 	unsigned short	dkl_magic;	/* identifies this label format */
65*0Sstevel@tonic-gate 	unsigned short	dkl_cksum;	/* xor checksum of sector */
66*0Sstevel@tonic-gate };
67*0Sstevel@tonic-gate 
68*0Sstevel@tonic-gate /*
69*0Sstevel@tonic-gate  * These defines are for historic compatibility with old drivers.
70*0Sstevel@tonic-gate  */
71*0Sstevel@tonic-gate #define	dkl_gap1	dkl_obs1	/* used to be gap1 */
72*0Sstevel@tonic-gate #define	dkl_gap2	dkl_obs2	/* used to be gap2 */
73*0Sstevel@tonic-gate #define	dkl_bhead	dkl_obs3	/* used to be label head offset */
74*0Sstevel@tonic-gate #define	dkl_ppart	dkl_obs4	/* used to by physical partition */
75*0Sstevel@tonic-gate 
76*0Sstevel@tonic-gate struct fk_label {			/* DOS floppy label */
77*0Sstevel@tonic-gate 	u_char fkl_type;
78*0Sstevel@tonic-gate 	u_char fkl_magich;
79*0Sstevel@tonic-gate 	u_char fkl_magicl;
80*0Sstevel@tonic-gate 	u_char filler;
81*0Sstevel@tonic-gate };
82*0Sstevel@tonic-gate 
83*0Sstevel@tonic-gate #endif /*!_sun_dklabel_h*/
84