sysdeps/posix/wait3.c

   1 /* Copyright (C) 1992, 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 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 <errno.h>
  20 #include <sys/wait.h>
  21 #include <sys/types.h>
  22 #include <stddef.h>
  23
  24 /* Wait for a child to exit.  When one does, put its status in *STAT_LOC and
  25    return its process ID.  For errors return (pid_t) -1.  If USAGE is not nil,
  26    store information about the child's resource usage (as a `struct rusage')
  27    there.  If the WUNTRACED bit is set in OPTIONS, return status for stopped
  28    children; otherwise don't.  */
  29 pid_t
  30 __wait3 (stat_loc, options, usage)
  31      __WAIT_STATUS_DEFN stat_loc;
  32      int options;
  33      struct rusage *usage;
  34 {
  35   if (usage != NULL)
  36     {
  37       __set_errno (ENOSYS);
  38       return (pid_t) -1;
  39     }
  40   return __waitpid (WAIT_ANY, stat_loc, options);
  41 }
  42
  43 weak_alias (__wait3, wait3)