workbench/libs/nonvolatile/getnvinfo.c

   1 /*
   2     Copyright © 1995-2006, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5 #include <dos/dosextens.h>
   6 #include <exec/memory.h>
   7 #include <proto/exec.h>
   8 #include <proto/nvdisk.h>
   9
  10 #include LC_LIBDEFS_FILE
  11
  12 /*****************************************************************************
  13
  14     NAME */
  15 #include <libraries/nonvolatile.h>
  16
  17         AROS_LH1(struct NVInfo *, GetNVInfo,
  18
  19 /*  SYNOPSIS */
  20
  21         AROS_LHA(BOOL, killRequesters, D1),
  22
  23 /*  LOCATION */
  24
  25         struct Library *, nvBase, 9, Nonvolatile)
  26
  27 /*  FUNCTION
  28
  29     Report information on the user's preferred nonvolatile storage device.
  30
  31     INPUTS
  32
  33     killRequesters  --  if TRUE no system requesters will be displayed during
  34                         the operation of this function
  35
  36     RESULT
  37
  38     Pointer to an NVInfo structure containing the information on the nonvolatile
  39     storage device currently in use. Returns NULL in case of a failure.
  40
  41     NOTES
  42
  43     EXAMPLE
  44
  45     BUGS
  46
  47     SEE ALSO
  48
  49     FreeNVData(), StoreNV(), <libraries/nonvolatile.h>
  50
  51     INTERNALS
  52
  53 ******************************************************************************/
  54
  55 {
  56     AROS_LIBFUNC_INIT
  57
  58     struct Process *me = (struct Process *)FindTask(NULL);
  59     APTR oldReq = me->pr_WindowPtr;
  60     struct NVInfo *info;
  61
  62     info = AllocVec(sizeof(struct NVInfo), MEMF_ANY);
  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(MemInfoNVD(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