include/disktab.h

   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_ */