sysdeps/mach/hurd/wait4.c

   1 /* Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <sys/types.h>
  20 #include <sys/wait.h>
  21 #include <errno.h>
  22 #include <hurd.h>
  23 #include <hurd/port.h>
  24
  25 pid_t
  26 __wait4 (pid, stat_loc, options, usage)
  27      pid_t pid;
  28      __WAIT_STATUS_DEFN stat_loc;
  29      int options;
  30      struct rusage *usage;
  31 {
  32   pid_t dead;
  33   error_t err;
  34   struct rusage ignored;
  35   natural_t sigcode;
  36   int dummy;
  37
  38   err = __USEPORT (PROC, __proc_wait (port, pid, options,
  39                                       stat_loc ?: &dummy, &sigcode,
  40                                       usage ?: &ignored, &dead));
  41
  42   return err ? (pid_t) __hurd_fail (err) : dead;
  43 }
  44
  45 weak_alias (__wait4, wait4)