/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * @(#)disktab.h        8.1 (Berkeley) 6/2/93
 * $DragonFly: src/include/disktab.h,v 1.4 2007/06/18 05:13:33 dillon Exp $
 */

#ifndef _DISKTAB_H_
#define _DISKTAB_H_

#ifndef _MACHINE_TYPES_H_
#include <machine/types.h>
#endif

/*
 * Disk description table, see disktab(5)
 */
#ifndef _PATH_DISKTAB
#define _PATH_DISKTAB   "/etc/disktab"
#endif

#define MAXDTPARTITIONS         16

struct  disktab {
        char    d_typename[16];         /* drive type (string) */
        int     d_typeid;               /* drive type (id) */

        /*
         * disk_info mandatory fields (not necessarily mandatory for disktab).
         * If d_media_blksize and one of d_media_size or d_media_blocks
         * is set, the remainining d_media_size/d_media_blocks field will
         * be constructed by getdisktabbyname().
         */
        __uint64_t d_media_size;
        __uint64_t d_media_blocks;
        int     d_media_blksize;
        int     d_dsflags;

        /*
         * disk_info optional fields.  
         */
        unsigned int    d_nheads;       /* (used to be d_ntracks) */
        unsigned int    d_secpertrack;  /* (used to be d_nsectors) */
        unsigned int    d_secpercyl;
        unsigned int    d_ncylinders;

        int     d_rpm;                  /* revolutions/minute */
        int     d_badsectforw;          /* supports DEC bad144 std */
        int     d_sectoffset;           /* use sect rather than cyl offsets */
        int     d_npartitions;          /* number of partitions */
        int     d_interleave;
        int     d_trackskew;
        int     d_cylskew;
        int     d_headswitch;
        int     d_trkseek;

        unsigned int    d_bbsize;       /* size of boot area */
        unsigned int    d_sbsize;       /* max size of fs superblock */

        /*
         * The partition table is variable length but does not necessarily
         * represent the maximum possible number of partitions for any
         * particular type of disklabel.
         */
        struct  dt_partition {
                __uint64_t p_offset;    /* offset, in sectors */
                __uint64_t p_size;      /* #sectors in partition */
                int       p_fstype;
                int       p_fsize;      /* fragment size */
                int       p_frag;       /* bsize = fsize * frag */
                char      p_fstypestr[32];
        } d_partitions[MAXDTPARTITIONS];
};

#ifndef _KERNEL
__BEGIN_DECLS
struct disklabel32;
struct disktab *getdisktabbyname (const char *);
struct disklabel32 *getdiskbyname (const char *);
__END_DECLS
#endif

#endif /* !_DISKTAB_H_ */