__wait4.c

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/* Copyright (C) 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include <ansidecl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <hurd.h>
#include <hurd/port.h>

pid_t
__wait4 (pid_t pid, __WAIT_STATUS_DEFN stat_loc,
	 int options, struct rusage *usage)
{
  pid_t dead;
  error_t err;
  struct rusage ignored;

  err = __USEPORT (PROC, __proc_wait (port, pid, options, stat_loc,
				      usage ?: &ignored, &dead));

  return err ? (pid_t) __hurd_fail (err) : dead;
}