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/*
* libhfs - library for reading and writing Macintosh HFS volumes
* Copyright (C) 1996-1998 Robert Leslie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* $Id: medium.c,v 1.4 1998/11/02 22:09:04 rob Exp $
*/
#include "config.h"
#include "libhfs.h"
#include "block.h"
#include "low.h"
#include "medium.h"
/*
* NAME: medium->findpmentry()
* DESCRIPTION: locate a partition map entry
*/
int m_findpmentry(hfsvol *vol, const char *type,
Partition *map, unsigned long *start)
{
unsigned long bnum;
int found = 0;
if (start && *start > 0)
{
bnum = *start;
if (bnum++ >= (unsigned long) map->pmMapBlkCnt)
ERROR(EINVAL, "partition not found");
}
else
bnum = 1;
while (1)
{
if (l_getpmentry(vol, map, bnum) == -1)
{
found = -1;
goto fail;
}
if (map->pmSig != HFS_PM_SIGWORD)
{
found = -1;
if (map->pmSig == HFS_PM_SIGWORD_OLD)
ERROR(EINVAL, "old partition map format not supported");
else
ERROR(EINVAL, "invalid partition map");
}
if (strcmp((char *) map->pmParType, type) == 0)
{
found = 1;
goto done;
}
if (bnum++ >= (unsigned long) map->pmMapBlkCnt)
ERROR(EINVAL, "partition not found");
}
done:
if (start)
*start = bnum;
fail:
return found;
}
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