src/protocols/zephyr/ZPending.c

   1 /* This file is part of the Project Athena Zephyr Notification System.
   2  * It contains source for the ZPending function.
   3  *
   4  *      Created by:     Robert French
   5  *
   6  *      $Source$
   7  *      $Author: warmenhoven $
   8  *
   9  *      Copyright (c) 1987 by the Massachusetts Institute of Technology.
  10  *      For copying and distribution information, see the file
  11  *      "mit-copyright.h".
  12  */
  13 /* $Header$ */
  14
  15 #ifndef lint
  16 static char rcsid_ZPending_c[] = "$Header$";
  17 #endif
  18
  19 #include <internal.h>
  20
  21 int ZPending()
  22 {
  23         int retval;
  24
  25         if (ZGetFD() < 0) {
  26                 errno = ZERR_NOPORT;
  27                 return (-1);
  28         }
  29
  30         if ((retval = Z_ReadEnqueue()) != ZERR_NONE) {
  31                 errno = retval;
  32                 return (-1);
  33         }
  34
  35         return(ZQLength());
  36 }