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