/*      $NetBSD: ahdi.c,v 1.1 2002/02/24 20:51:07 leo Exp $     */

/*
* Copyright (c) 1996 Leo Weppelman, Waldi Ravens.
* 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. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by
*                      Leo Weppelman and Waldi Ravens.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/

#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <xhdi.h>
#include "libtos.h"
#include "diskio.h"
#include "ahdilbl.h"

u_int
ahdi_getparts(dd, ptable, rsec, esec)
       disk_t                  *dd;
       ptable_t                *ptable;
       u_int                   rsec,
                               esec;
{
       struct ahdi_part        *part, *end;
       struct ahdi_root        *root;
       u_int                   rv;

       root = disk_read(dd, rsec, 1);
       if (!root) {
               rv = rsec + (rsec == 0);
               goto done;
       }

       if (rsec == AHDI_BBLOCK)
               end = &root->ar_parts[AHDI_MAXRPD];
       else end = &root->ar_parts[AHDI_MAXARPD];
       for (part = root->ar_parts; part < end; ++part) {
               u_int   id = *((u_int32_t *)&part->ap_flg);
               if (!(id & 0x01000000))
                       continue;
               if ((id &= 0x00ffffff) == AHDI_PID_XGM) {
                       u_int   offs = part->ap_st + esec;
                       rv = ahdi_getparts(dd, ptable, offs,
                                       esec == AHDI_BBLOCK ? offs : esec);
                       if (rv)
                               goto done;
               } else {
                       part_t  *p;
                       u_int   i = ++ptable->nparts;
                       ptable->parts = xrealloc(ptable->parts,
                                               i * sizeof *ptable->parts);
                       p = &ptable->parts[--i];
                       *((u_int32_t *)&p->id) = id << 8;
                       p->start = part->ap_st + rsec;
                       p->end   = p->start + part->ap_size - 1;
                       p->rsec  = rsec;
                       p->rent  = part - root->ar_parts;
                       p->mod   = 0;
               }
       }
       rv = 0;
done:
       free(root);
       return(rv);
}