Hi,

How can I reset the READONLY-attribute of a file in order to be able to
overwrite or delete it? It is probable plain simple but I can't figure it
out.

This is what I tried:

  FileFlags = FILE_READONLY;         /* doesn't really matter */
  FileOpenAction = OPEN_ACTION_OPEN_IF_EXISTS;
  FileAccess = OPEN_ACCESS_READONLY| OPEN_SHARE_DENYNONE;

    /* Open the file in readonly mode to see if it exists.        */
    /* Can't use DosFindFirst() here cause I need a FileHandle in */
    /* DosQueryFileInfo                                           */
    /* OPEN_ACCESS_READONLY and OPEN_SHARE_DENYNONE must be set   */
    rc = DosOpen (Fname,          /* File path name */
    &hfFileHandle,  /* File handle */
    &ulAction,      /* Action taken */
    (long) DirPointer->FileSize,  /* File primary allocation */
    FileFlags,       /* File attribute */
    FileOpenAction,
    FileAccess,      /* Open mode of the file */
    0L);             /* No extended attribute */


    if (rc == NO_ERROR)            /* NO_ERROR if file exists */
    {
      if (Verbose)
 printf (" File exists.\n");
      /* Read file attributes */
      rc = DosQueryFileInfo (hfFileHandle, FIL_STANDARD,
        &fsts3FileInfo, ulBufferSize);
      if (rc != NO_ERROR)
      {
 printf ("    DosQueryFileInfo error: return code = %u line =
%d\n", (unsigned int) rc, __LINE__);
 return rc;
      }

      /* Reset readonly,  hidden and system flags */
      fsts3FileInfo.attrFile = FILE_NORMAL;

      /* This one trows (of course) an ERROR_ACCESS_DENIED at me */
      rc = DosSetFileInfo (hfFileHandle, FIL_STANDARD,
      &fsts3FileInfo, ulBufferSize);
      if (rc != NO_ERROR)
      {
 printf ("    DosSetFileInfo error: return code = %u line =
%d\n", (unsigned int) rc, __LINE__);
 return 1;
      }
      /* close the file and re-open it so it can be overwritten */
      rc = DosClose (hfFileHandle);     /* Close the file */
      if (rc != NO_ERROR)
      {
 printf ("    DosClose error: return code = %u line = %d\n",
(unsigned int) rc, __LINE__);
 return 1;
      }

What do I miss here?

Bye, Erwin Hogeweg
fidonet : 2:500/120.6046
OS2NET  : 81:431/520.6046
e-mail  : e.hogeweg{at}dosgg.nl

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