workbench/libs/nonvolatile/getnvinfo.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5 #include <dos/dosextens.h>
   6
   7 /*****************************************************************************
   8
   9     NAME */
  10
  11 #include <libraries/nonvolatile.h>
  12 #include <exec/memory.h>
  13 #include <proto/exec.h>
  14 #include <proto/nvdisk.h>
  15 #include "nonvolatile_intern.h"
  16
  17
  18 AROS_LH1(struct NVInfo *, GetNVInfo,
  19
  20 /*  SYNOPSIS */
  21
  22         AROS_LHA(BOOL, killRequesters, D1),
  23
  24 /*  LOCATION */
  25
  26         struct Library *, nvBase, 9, Nonvolatile)
  27
  28 /*  FUNCTION
  29
  30     Report information on the user's preferred nonvolatile storage device.
  31
  32     INPUTS
  33
  34     killRequesters  --  if TRUE no system requesters will be displayed during
  35                         the operation of this function
  36
  37     RESULT
  38
  39     Pointer to an NVInfo structure containing the information on the nonvolatile
  40     storage device currently in use. Returns NULL in case of a failure.
  41
  42     NOTES
  43
  44     EXAMPLE
  45
  46     BUGS
  47
  48     SEE ALSO
  49
  50     FreeNVData(), StoreNV(), <libraries/nonvolatile.h>
  51
  52     INTERNALS
  53
  54 ******************************************************************************/
  55
  56 {
  57     AROS_LIBFUNC_INIT
  58
  59     struct Process *me = (struct Process *)FindTask(NULL);
  60     APTR oldReq = me->pr_WindowPtr;
  61     struct NVInfo *info = AllocVec(sizeof(struct NVInfo), MEMF_ANY);
  62
  63     if(info == NULL)
  64         return NULL;
  65
  66     if(killRequesters)
  67         me->pr_WindowPtr = (APTR)-1;
  68
  69     /* Try to get the information from the HIDD */
  70     if(MemInfo(info))
  71     {
  72         /* Round down to nearest 10 bytes */
  73         info->nvi_MaxStorage  = (info->nvi_MaxStorage/10)*10;
  74         info->nvi_FreeStorage = (info->nvi_FreeStorage/10)*10;
  75     }
  76     else
  77     {
  78         FreeVec(info);
  79         info = NULL;
  80     }
  81
  82     if(killRequesters)
  83         me->pr_WindowPtr = oldReq;
  84
  85     return info;
  86
  87     AROS_LIBFUNC_EXIT
  88 } /* GetNVInfo */
  89