1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)disktab.h 8.1 (Berkeley) 6/2/93 30 * $DragonFly: src/include/disktab.h,v 1.4 2007/06/18 05:13:33 dillon Exp $ 31 */ 32 33 #ifndef _DISKTAB_H_ 34 #define _DISKTAB_H_ 35 36 #ifndef _MACHINE_TYPES_H_ 37 #include <machine/types.h> 38 #endif 39 40 /* 41 * Disk description table, see disktab(5) 42 */ 43 #ifndef _PATH_DISKTAB 44 #define _PATH_DISKTAB "/etc/disktab" 45 #endif 46 47 #define MAXDTPARTITIONS 16 48 49 struct disktab { 50 char d_typename[16]; /* drive type (string) */ 51 int d_typeid; /* drive type (id) */ 52 53 /* 54 * disk_info mandatory fields (not necessarily mandatory for disktab). 55 * If d_media_blksize and one of d_media_size or d_media_blocks 56 * is set, the remainining d_media_size/d_media_blocks field will 57 * be constructed by getdisktabbyname(). 58 */ 59 __uint64_t d_media_size; 60 __uint64_t d_media_blocks; 61 int d_media_blksize; 62 int d_dsflags; 63 64 /* 65 * disk_info optional fields. 66 */ 67 unsigned int d_nheads; /* (used to be d_ntracks) */ 68 unsigned int d_secpertrack; /* (used to be d_nsectors) */ 69 unsigned int d_secpercyl; 70 unsigned int d_ncylinders; 71 72 int d_rpm; /* revolutions/minute */ 73 int d_badsectforw; /* supports DEC bad144 std */ 74 int d_sectoffset; /* use sect rather than cyl offsets */ 75 int d_npartitions; /* number of partitions */ 76 int d_interleave; 77 int d_trackskew; 78 int d_cylskew; 79 int d_headswitch; 80 int d_trkseek; 81 82 unsigned int d_bbsize; /* size of boot area */ 83 unsigned int d_sbsize; /* max size of fs superblock */ 84 85 /* 86 * The partition table is variable length but does not necessarily 87 * represent the maximum possible number of partitions for any 88 * particular type of disklabel. 89 */ 90 struct dt_partition { 91 __uint64_t p_offset; /* offset, in sectors */ 92 __uint64_t p_size; /* #sectors in partition */ 93 int p_fstype; 94 int p_fsize; /* fragment size */ 95 int p_frag; /* bsize = fsize * frag */ 96 char p_fstypestr[32]; 97 } d_partitions[MAXDTPARTITIONS]; 98 }; 99 100 #ifndef _KERNEL 101 __BEGIN_DECLS 102 struct disklabel32; 103 struct disktab *getdisktabbyname (const char *); 104 struct disklabel32 *getdiskbyname (const char *); 105 __END_DECLS 106 #endif 107 108 #endif /* !_DISKTAB_H_ */ 109