rom/partition/openpartitiontable.c

   1 /*
   2     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <exec/memory.h>
   7 #include <proto/exec.h>
   8
   9 #include "partition_intern.h"
  10 #include "partition_support.h"
  11 #include "platform.h"
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <libraries/partition.h>
  17
  18         AROS_LH1(LONG, OpenPartitionTable,
  19
  20 /*  SYNOPSIS */
  21         AROS_LHA(struct PartitionHandle *, root, A1),
  22
  23 /*  LOCATION */
  24         struct Library *, PartitionBase, 7, Partition)
  25
  26 /*  FUNCTION
  27         Open a partition table. On success root->list will be filled with a
  28         list of PartitionHandles. If one partition contains more
  29         subpartitions, the caller should call OpenPartitionTable() on the
  30         PartitionHandle recursively.
  31
  32     INPUTS
  33         root - root partition
  34
  35     RESULT
  36         0 for success; an error code otherwise.
  37
  38     NOTES
  39
  40     EXAMPLE
  41
  42     BUGS
  43
  44     SEE ALSO
  45
  46     INTERNALS
  47
  48 *****************************************************************************/
  49 {
  50     AROS_LIBFUNC_INIT
  51
  52     const struct PTFunctionTable * const *pst;
  53
  54     pst = PartitionSupport;
  55     while (pst[0])
  56     {
  57         if (pst[0]->checkPartitionTable(PartitionBase, root))
  58         {
  59             root->table = AllocMem(sizeof(struct PartitionTableHandler), MEMF_PUBLIC | MEMF_CLEAR);
  60
  61             if (root->table)
  62             {
  63                 LONG retval;
  64
  65                 NEWLIST(&root->table->list);
  66
  67                 root->table->type    = pst[0]->type;
  68                 root->table->handler = (void *)pst[0];
  69
  70                 retval = pst[0]->openPartitionTable(PartitionBase, root);
  71                 if (retval)
  72                 {
  73                     FreeMem(root->table, sizeof(struct PartitionTableHandler));
  74
  75                     root->table = NULL;
  76                 }
  77                 return retval;
  78             }
  79         }
  80         pst++;
  81     }
  82     return 1;
  83
  84     AROS_LIBFUNC_EXIT
  85 }