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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)disktab.h 8.1 (Berkeley) 6/2/93 34 * $DragonFly: src/include/disktab.h,v 1.4 2007/06/18 05:13:33 dillon Exp $ 35 */ 36 37 #ifndef _DISKTAB_H_ 38 #define _DISKTAB_H_ 39 40 #ifndef _MACHINE_TYPES_H_ 41 #include <machine/types.h> 42 #endif 43 44 /* 45 * Disk description table, see disktab(5) 46 */ 47 #ifndef _PATH_DISKTAB 48 #define _PATH_DISKTAB "/etc/disktab" 49 #endif 50 51 #define MAXDTPARTITIONS 16 52 53 struct disktab { 54 char d_typename[16]; /* drive type (string) */ 55 int d_typeid; /* drive type (id) */ 56 57 /* 58 * disk_info mandatory fields (not necessarily mandatory for disktab). 59 * If d_media_blksize and one of d_media_size or d_media_blocks 60 * is set, the remainining d_media_size/d_media_blocks field will 61 * be constructed by getdisktabbyname(). 62 */ 63 __uint64_t d_media_size; 64 __uint64_t d_media_blocks; 65 int d_media_blksize; 66 int d_dsflags; 67 68 /* 69 * disk_info optional fields. 70 */ 71 unsigned int d_nheads; /* (used to be d_ntracks) */ 72 unsigned int d_secpertrack; /* (used to be d_nsectors) */ 73 unsigned int d_secpercyl; 74 unsigned int d_ncylinders; 75 76 int d_rpm; /* revolutions/minute */ 77 int d_badsectforw; /* supports DEC bad144 std */ 78 int d_sectoffset; /* use sect rather than cyl offsets */ 79 int d_npartitions; /* number of partitions */ 80 int d_interleave; 81 int d_trackskew; 82 int d_cylskew; 83 int d_headswitch; 84 int d_trkseek; 85 86 unsigned int d_bbsize; /* size of boot area */ 87 unsigned int d_sbsize; /* max size of fs superblock */ 88 89 /* 90 * The partition table is variable length but does not necessarily 91 * represent the maximum possible number of partitions for any 92 * particular type of disklabel. 93 */ 94 struct dt_partition { 95 __uint64_t p_offset; /* offset, in sectors */ 96 __uint64_t p_size; /* #sectors in partition */ 97 int p_fstype; 98 int p_fsize; /* fragment size */ 99 int p_frag; /* bsize = fsize * frag */ 100 char p_fstypestr[32]; 101 } d_partitions[MAXDTPARTITIONS]; 102 }; 103 104 #ifndef _KERNEL 105 __BEGIN_DECLS 106 struct disklabel32; 107 struct disktab *getdisktabbyname (const char *); 108 struct disklabel32 *getdiskbyname (const char *); 109 __END_DECLS 110 #endif 111 112 #endif /* !_DISKTAB_H_ */ 113