lib/libc/compat/sys/compat_wait4.c

   1 /*      $NetBSD: compat_wait4.c,v 1.1.2.4 2008/11/23 23:26:09 christos Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 __RCSID("$NetBSD: compat_wait4.c,v 1.1.2.4 2008/11/23 23:26:09 christos Exp $");
  35 #endif /* LIBC_SCCS and not lint */
  36
  37 #define __LIBC12_SOURCE__
  38
  39 #include "namespace.h"
  40 #include <sys/types.h>
  41 #include <sys/wait.h>
  42 #include <compat/sys/wait.h>
  43 #include <sys/resource.h>
  44 #include <compat/sys/resource.h>
  45
  46 __warn_references(wait3,
  47     "warning: reference to compatibility wait3(); include <sys/wait.h> to generate correct reference")
  48 __warn_references(wait4,
  49     "warning: reference to compatibility wait4(); include <sys/wait.h> to generate correct reference")
  50
  51 extern void __rusage_to_rusage50(const struct rusage *, struct rusage50 *);
  52
  53 #ifdef __weak_alias
  54 __weak_alias(wait4, _wait4)
  55 __weak_alias(_sys_wait4, _wait4)
  56 __weak_alias(wait3, _wait3)
  57 #endif
  58
  59 /*
  60  * libc12 compatible wait4 routine.
  61  */
  62 int
  63 wait3(int *status, int options, struct rusage50 *ru50)
  64 {
  65         struct rusage ru;
  66         int rv;
  67
  68         if ((rv = __wait350(status, options, ru50 ? &ru : NULL)) == -1)
  69                 return rv;
  70         if (ru50)
  71                 __rusage_to_rusage50(&ru, ru50);
  72         return rv;
  73 }
  74
  75 int
  76 wait4(pid_t wpid, int *status, int options, struct rusage50 *ru50)
  77 {
  78         struct rusage ru;
  79         int rv;
  80
  81         if ((rv = __wait450(wpid, status, options, ru50 ? &ru : NULL)) == -1)
  82                 return rv;
  83         if (ru50)
  84                 __rusage_to_rusage50(&ru, ru50);
  85         return rv;
  86 }