disklabel.h revision 1.2
1 /* $NetBSD: disklabel.h,v 1.2 2002/07/11 16:03:14 christos Exp $ */ 2 /* 3 * Copyright (c) 1994 Rolf Grossmann 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Rolf Grossmann. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _MACHINE_DISKLABEL_H_ 33 #define _MACHINE_DISKLABEL_H_ 34 35 #define LABELSECTOR 0 /* sector containing label */ 36 #define LABELOFFSET 0 /* offset of label in sector */ 37 #define LABELSIZE 8192 /* size of label */ 38 #define MAXPARTITIONS 8 /* number of partitions */ 39 #define RAW_PART 2 /* raw partition: xx?c */ 40 41 #define CPUMAXPARTITIONS 8 /* number of partitions in cpu_disklabel */ 42 #define CD_V1 0x4e655854 /* version #1: "NeXT" */ 43 #define CD_V2 0x646c5632 /* version #2: "dlV2" */ 44 #define CD_V3 0x646c5633 /* version #3: "dlV3" */ 45 #define IS_DISKLABEL(l) ((l)->cd_version == CD_V1 || (l)->cd_version == CD_V2 \ 46 || (l)->cd_version == CD_V3) 47 48 /* XXX should we really size all this stuff this way ? */ 49 #define CPULBLLEN 24 50 #define MAXDNMLEN 24 51 #define MAXTYPLEN 24 52 #define MAXBFLEN 24 53 #define MAXHNLEN 32 54 #define MAXMPTLEN 16 55 #define MAXFSTLEN 8 56 57 #define DEFAULTFRONTPORCH (160 * 2) 58 #define DEFAULTBOOT0_1 (32 * 2) 59 #define DEFAULTBOOT0_2 (96 * 2) 60 61 struct cpu_partition { 62 int cp_offset; /* starting sector */ 63 int cp_size; /* number of sectors in partition */ 64 short cp_bsize; /* block size in bytes */ 65 short cp_fsize; /* filesystem basic fragment size */ 66 char cp_opt; /* optimization type: 's'pace/'t'ime */ 67 char cp_pad1; 68 short cp_cpg; /* filesystem cylinders per group */ 69 short cp_density; /* bytes per inode density */ 70 char cp_minfree; /* minfree (%) */ 71 char cp_newfs; /* run newfs during init */ 72 char cp_mountpt[MAXMPTLEN];/* default/standard mount point */ 73 char cp_automnt; /* auto-mount when inserted */ 74 char cp_type[MAXFSTLEN]; /* file system type name */ 75 char cp_pad2; 76 } __attribute__ ((packed)); 77 78 /* The disklabel the way it is on the disk */ 79 struct nextstep_disklabel { 80 int cd_version; /* label version */ 81 int cd_label_blkno; /* block # of this label */ 82 int cd_size; /* size of media area (sectors) */ 83 char cd_label[CPULBLLEN]; /* disk name (label) */ 84 u_int cd_flags; /* flags */ 85 #define CD_UNINIT 0x80000000 /* label is uninitialized */ 86 u_int cd_tag; /* volume tag */ 87 char cd_name[MAXDNMLEN]; /* drive (hardware) name */ 88 char cd_type[MAXTYPLEN]; /* drive type */ 89 int cd_secsize; /* # of bytes per sector */ 90 int cd_ntracks; /* # of tracks per cylinder */ 91 int cd_nsectors; /* # of data sectors per track */ 92 int cd_ncylinders; /* # of data cylinders per unit */ 93 int cd_rpm; /* rotational speed */ 94 short cd_front; /* # of sectors in "front porch" */ 95 short cd_back; /* # of sectors in "back porch" */ 96 short cd_ngroups; /* # of alt groups */ 97 short cd_ag_size; /* alt group size (sectors) */ 98 short cd_ag_alts; /* alternate sectors / alt group */ 99 short cd_ag_off; /* sector offset to first alternate */ 100 int cd_boot_blkno[2]; /* boot program locations */ 101 char cd_kernel[MAXBFLEN]; /* default kernel name */ 102 char cd_hostname[MAXHNLEN]; /* host name (usu. where disk was labeled) */ 103 char cd_rootpartition; /* root partition letter e.g. 'a' */ 104 char cd_rwpartition; /* r/w partition letter e.g. 'b' */ 105 struct cpu_partition cd_partitions[CPUMAXPARTITIONS]; 106 107 union { 108 u_short CD_v3_checksum; /* label version 3 checksum */ 109 #define NBAD 1670 /* sized to make label ~= 8KB */ 110 int CD_bad[NBAD]; /* block number that is bad */ 111 } cd_un; 112 #define cd_v3_checksum cd_un.CD_v3_checksum 113 #define cd_bad cd_un.CD_bad 114 u_short cd_checksum; /* label version 1 or 2 checksum */ 115 } __attribute__ ((packed)); 116 117 struct cpu_disklabel { 118 int od_version; 119 }; 120 121 #endif /* _MACHINE_DISKLABEL_H_ */ 122
Indexes created Tue Sep 23 14:10:03 GMT 2025