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Annotation of qemu/roms/openbios/fs/hfs/medium.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * libhfs - library for reading and writing Macintosh HFS volumes
        !             3:  * Copyright (C) 1996-1998 Robert Leslie
        !             4:  *
        !             5:  * This program is free software; you can redistribute it and/or modify
        !             6:  * it under the terms of the GNU General Public License as published by
        !             7:  * the Free Software Foundation; either version 2 of the License, or
        !             8:  * (at your option) any later version.
        !             9:  *
        !            10:  * This program is distributed in the hope that it will be useful,
        !            11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            12:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            13:  * GNU General Public License for more details.
        !            14:  *
        !            15:  * You should have received a copy of the GNU General Public License
        !            16:  * along with this program; if not, write to the Free Software
        !            17:  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
        !            18:  * MA 02110-1301, USA.
        !            19:  *
        !            20:  * $Id: medium.c,v 1.4 1998/11/02 22:09:04 rob Exp $
        !            21:  */
        !            22: 
        !            23: #include "config.h"
        !            24: #include "libhfs.h"
        !            25: #include "block.h"
        !            26: #include "low.h"
        !            27: #include "medium.h"
        !            28: 
        !            29: 
        !            30: /*
        !            31:  * NAME:       medium->findpmentry()
        !            32:  * DESCRIPTION:        locate a partition map entry
        !            33:  */
        !            34: int m_findpmentry(hfsvol *vol, const char *type,
        !            35:                  Partition *map, unsigned long *start)
        !            36: {
        !            37:   unsigned long bnum;
        !            38:   int found = 0;
        !            39: 
        !            40:   if (start && *start > 0)
        !            41:     {
        !            42:       bnum = *start;
        !            43: 
        !            44:       if (bnum++ >= (unsigned long) map->pmMapBlkCnt)
        !            45:        ERROR(EINVAL, "partition not found");
        !            46:     }
        !            47:   else
        !            48:     bnum = 1;
        !            49: 
        !            50:   while (1)
        !            51:     {
        !            52:       if (l_getpmentry(vol, map, bnum) == -1)
        !            53:        {
        !            54:          found = -1;
        !            55:          goto fail;
        !            56:        }
        !            57: 
        !            58:       if (map->pmSig != HFS_PM_SIGWORD)
        !            59:        {
        !            60:          found = -1;
        !            61: 
        !            62:          if (map->pmSig == HFS_PM_SIGWORD_OLD)
        !            63:            ERROR(EINVAL, "old partition map format not supported");
        !            64:          else
        !            65:            ERROR(EINVAL, "invalid partition map");
        !            66:        }
        !            67: 
        !            68:       if (strcmp((char *) map->pmParType, type) == 0)
        !            69:        {
        !            70:          found = 1;
        !            71:          goto done;
        !            72:        }
        !            73: 
        !            74:       if (bnum++ >= (unsigned long) map->pmMapBlkCnt)
        !            75:        ERROR(EINVAL, "partition not found");
        !            76:     }
        !            77: 
        !            78: done:
        !            79:   if (start)
        !            80:     *start = bnum;
        !            81: 
        !            82: fail:
        !            83:   return found;
        !            84: }

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