disklabel.h revision 1.7
1 1.7 martin /* $NetBSD: disklabel.h,v 1.7 2013/04/04 12:50:03 martin Exp $ */ 2 1.1 cgd 3 1.1 cgd /* 4 1.1 cgd * Copyright (c) 1994 Christopher G. Demetriou 5 1.1 cgd * All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Redistribution and use in source and binary forms, with or without 8 1.1 cgd * modification, are permitted provided that the following conditions 9 1.1 cgd * are met: 10 1.1 cgd * 1. Redistributions of source code must retain the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer. 12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 cgd * notice, this list of conditions and the following disclaimer in the 14 1.1 cgd * documentation and/or other materials provided with the distribution. 15 1.1 cgd * 3. All advertising materials mentioning features or use of this software 16 1.1 cgd * must display the following acknowledgement: 17 1.1 cgd * This product includes software developed by Christopher G. Demetriou. 18 1.1 cgd * 4. The name of the author may not be used to endorse or promote products 19 1.1 cgd * derived from this software without specific prior written permission 20 1.1 cgd * 21 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 1.1 cgd * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 1.1 cgd * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 1.1 cgd * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 1.1 cgd * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 1.1 cgd * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 1.1 cgd * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 1.1 cgd * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 1.1 cgd * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 1.1 cgd * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 1.1 cgd */ 32 1.1 cgd 33 1.1 cgd #ifndef _MACHINE_DISKLABEL_H_ 34 1.1 cgd #define _MACHINE_DISKLABEL_H_ 35 1.1 cgd 36 1.6 abs #define LABELUSESMBR 0 /* no MBR partitionning */ 37 1.6 abs #define LABELSECTOR 0 /* sector containing label */ 38 1.6 abs #define LABELOFFSET 64 /* offset of label in sector */ 39 1.7 martin #define MAXPARTITIONS 12 /* number of partitions */ 40 1.6 abs #define OLDMAXPARTITIONS 8 /* number of partitions before nb-6 */ 41 1.6 abs #define RAW_PART 2 /* raw partition: xx?c */ 42 1.7 martin /* 43 1.7 martin * In NetBSD 6 we eroneously used a too large MAXPARTITIONS value (disklabel 44 1.7 martin * overlapped with important parts of the bootblocks and made some machines 45 1.7 martin * unbootable). 46 1.7 martin */ 47 1.7 martin #define __TMPBIGMAXPARTITIONS 16 /* compatibility with 6.0 installs */ 48 1.6 abs 49 1.6 abs /* 50 1.6 abs * We use the highest bit of the minor number for the partition number. 51 1.6 abs * This maintains backward compatibility with device nodes created before 52 1.6 abs * MAXPARTITIONS was increased. 53 1.7 martin * Temporarily MAXPARTITIONS was 16, so we use that to keep compatibility 54 1.7 martin * with existing installations. 55 1.6 abs */ 56 1.7 martin #define __VAX_MAXDISKS ((1 << 20) / __TMPBIGMAXPARTITIONS) 57 1.6 abs #define DISKUNIT(dev) ((minor(dev) / OLDMAXPARTITIONS) % __VAX_MAXDISKS) 58 1.6 abs #define DISKPART(dev) ((minor(dev) % OLDMAXPARTITIONS) + \ 59 1.6 abs ((minor(dev) / (__VAX_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS)) 60 1.6 abs #define DISKMINOR(unit, part) \ 61 1.6 abs (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \ 62 1.6 abs ((part) / OLDMAXPARTITIONS) * (__VAX_MAXDISKS * OLDMAXPARTITIONS)) 63 1.1 cgd 64 1.1 cgd /* Just a dummy */ 65 1.3 mycroft #ifndef _LOCORE 66 1.1 cgd struct cpu_disklabel { 67 1.1 cgd int cd_dummy; /* must have one element. */ 68 1.1 cgd }; 69 1.2 ragge #endif 70 1.1 cgd #endif /* _MACHINE_DISKLABEL_H_ */ 71
Indexes created Tue Sep 30 20:09:53 GMT 2025