workbench/libs/nonvolatile/nvdisk/deletedata.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12
  13 #include <aros/debug.h>
  14
  15 #include "nvdisk_intern.h"
  16
  17 #include <dos/dos.h>
  18 #include <proto/dos.h>
  19 #include <libraries/nonvolatile.h>
  20
  21 static int cxbug; /* For cxref bug */
  22
  23 AROS_LH2(BOOL, DeleteData,
  24
  25 /*  SYNOPSIS */
  26
  27         AROS_LHA(STRPTR, appName,  A0),
  28         AROS_LHA(STRPTR, itemName, A1),
  29
  30 /*  LOCATION */
  31
  32         struct Library *, nvdBase, 7, NVDisk)
  33
  34 /*  FUNCTION
  35
  36     Delete a piece of data in the nonvolatile memory.
  37
  38     INPUTS
  39
  40     appName   --  the application owning the data to be deleted
  41     itemName  --  name of the data to be deleted
  42
  43     RESULT
  44
  45     Success / failure indicator.
  46
  47     NOTES
  48
  49     EXAMPLE
  50
  51     BUGS
  52
  53     SEE ALSO
  54
  55     nonvolatile.library/DeleteNV()
  56
  57     INTERNALS
  58
  59     HISTORY
  60
  61     November 2000,  SDuvan  --  implemented
  62
  63 ******************************************************************************/
  64
  65 {
  66     AROS_LIBFUNC_INIT
  67
  68     BPTR oldCDir = CurrentDir(GPB(nvdBase)->nvd_location);
  69     BPTR lock = Lock(appName, SHARED_LOCK);
  70     BOOL retval;
  71
  72     D(bug("Entering DeleteData()"));
  73
  74     if(lock == NULL)
  75     {
  76         D(bug("Could not lock directory %s", appName));
  77         CurrentDir(oldCDir);
  78         return FALSE;
  79     }
  80
  81     D(bug("Deleting file %s", itemName));
  82
  83     CurrentDir(lock);
  84
  85     retval = DeleteFile(itemName) == DOSTRUE ? TRUE : FALSE;
  86
  87     UnLock(lock);
  88     CurrentDir(oldCDir);
  89
  90     return retval;
  91
  92     AROS_LIBFUNC_EXIT
  93 } /* DeleteData */