posix/wait3.c

   1 /* Copyright (C) 1991, 1993, 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <sys/wait.h>
  21 #include <sys/types.h>
  22
  23 /* Wait for a child to exit.  When one does, put its status in *STAT_LOC and
  24    return its process ID.  For errors return (pid_t) -1.  If USAGE is not nil,
  25    store information about the child's resource usage (as a `struct rusage')
  26    there.  If the WUNTRACED bit is set in OPTIONS, return status for stopped
  27    children; otherwise don't.  */
  28 pid_t
  29 __wait3 (__WAIT_STATUS_DEFN stat_loc, int options, struct rusage *usage)
  30 {
  31   if ((options & ~(WNOHANG|WUNTRACED)) != 0)
  32     {
  33       __set_errno (EINVAL);
  34       return (pid_t) -1;
  35     }
  36
  37   __set_errno (ENOSYS);
  38   return (pid_t) -1;
  39 }
  40 stub_warning (wait3)
  41
  42 weak_alias (__wait3, wait3)
  43 #include <stub-tag.h>