lib/libc/compat/sys/compat_getrusage.c

   1 /*      $NetBSD: compat_getrusage.c,v 1.1.2.1 2008/11/08 21:49:35 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_getrusage.c,v 1.1.2.1 2008/11/08 21:49:35 christos Exp $");
  35 #endif /* LIBC_SCCS and not lint */
  36
  37 #define __LIBC12_SOURCE__
  38
  39 #include "namespace.h"
  40 #include <string.h>
  41 #include <sys/types.h>
  42 #include <sys/resource.h>
  43 #include <compat/sys/resource.h>
  44
  45 __warn_references(getrusage,
  46     "warning: reference to compatibility getrusage(); include <sys/resource.h> to generate correct reference")
  47
  48 void __rusage_to_rusage50(const struct rusage *, struct rusage50 *);
  49
  50 void
  51 __rusage_to_rusage50(const struct rusage *ru, struct rusage50 *ru50)
  52 {
  53         (void)memcpy(&ru50->ru_first, &ru->ru_first,
  54             (size_t)((char *)(void *)&ru50->ru_last -
  55             (char *)(void *)&ru50->ru_first));
  56         ru50->ru_maxrss = ru->ru_maxrss;
  57         timeval_to_timeval50(&ru->ru_utime, &ru50->ru_utime);
  58         timeval_to_timeval50(&ru->ru_stime, &ru50->ru_stime);
  59 }
  60
  61 /*
  62  * libc12 compatible getrusage routine.
  63  */
  64 int
  65 getrusage(int who, struct rusage50 *ru50)
  66 {
  67         struct rusage ru;
  68         int rv;
  69
  70         if ((rv = __getrusage50(who, &ru)) == -1)
  71                 return rv;
  72         __rusage_to_rusage50(&ru, ru50);
  73         return rv;
  74 }