rom/partition/openpartitiontable.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5 */
   6
   7 #include <exec/memory.h>
   8 #include <proto/exec.h>
   9
  10 #include "partition_intern.h"
  11 #include "partition_support.h"
  12 #include "platform.h"
  13
  14 /*****************************************************************************
  15
  16     NAME */
  17 #include <libraries/partition.h>
  18
  19         AROS_LH1(LONG, OpenPartitionTable,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(struct PartitionHandle *, root, A1),
  23
  24 /*  LOCATION */
  25         struct Library *, PartitionBase, 7, Partition)
  26
  27 /*  FUNCTION
  28         Open a partition table. On success root->list will be filled with a
  29         list of PartitionHandles. If one partition contains more
  30         subpartitions, the caller should call OpenPartitionTable() on the
  31         PartitionHandle recursively.
  32
  33     INPUTS
  34         root - root partition
  35
  36     RESULT
  37         0 for success; an error code otherwise.
  38
  39     NOTES
  40
  41     EXAMPLE
  42
  43     BUGS
  44
  45     SEE ALSO
  46
  47     INTERNALS
  48
  49     HISTORY
  50         21-02-02    first version
  51
  52 *****************************************************************************/
  53 {
  54     AROS_LIBFUNC_INIT
  55
  56     const struct PTFunctionTable * const *pst;
  57
  58     pst = PartitionSupport;
  59     while (pst[0])
  60     {
  61         if (pst[0]->checkPartitionTable(PartitionBase, root))
  62         {
  63             root->table = AllocMem(sizeof(struct PartitionTableHandler), MEMF_PUBLIC | MEMF_CLEAR);
  64
  65             if (root->table)
  66             {
  67                 LONG retval;
  68
  69                 NEWLIST(&root->table->list);
  70
  71                 root->table->type    = pst[0]->type;
  72                 root->table->handler = (void *)pst[0];
  73
  74                 retval = pst[0]->openPartitionTable(PartitionBase, root);
  75                 if (retval)
  76                 {
  77                     FreeMem(root->table, sizeof(struct PartitionTableHandler));
  78
  79                     root->table = NULL;
  80                 }
  81                 return retval;
  82             }
  83         }
  84         pst++;
  85     }
  86     return 1;
  87
  88     AROS_LIBFUNC_EXIT
  89 }