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compat_getrusage.c revision 1.4 
      1 /*	$NetBSD: compat_getrusage.c,v 1.4 2013/10/04 21:07:37 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 1.4 2013/10/04 21:07:37 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 __strong_alias(getrusage, __compat_getrusage)
     49 
     50 void __rusage_to_rusage50(const struct rusage *, struct rusage50 *);
     51 
     52 void
     53 __rusage_to_rusage50(const struct rusage *ru, struct rusage50 *ru50)
     54 {
     55 	(void)memcpy(&ru50->ru_first, &ru->ru_first,
     56 	    (size_t)((char *)(void *)&ru50->ru_last -
     57 	    (char *)(void *)&ru50->ru_first));
     58 	ru50->ru_maxrss = ru->ru_maxrss;
     59 	timeval_to_timeval50(&ru->ru_utime, &ru50->ru_utime);
     60 	timeval_to_timeval50(&ru->ru_stime, &ru50->ru_stime);
     61 }
     62 
     63 /*
     64  * libc12 compatible getrusage routine.
     65  */
     66 int
     67 __compat_getrusage(int who, struct rusage50 *ru50)
     68 {
     69 	struct rusage ru;
     70 	int rv;
     71 
     72 	if ((rv = __getrusage50(who, &ru)) == -1)
     73 		return rv;
     74 	__rusage_to_rusage50(&ru, ru50);
     75 	return rv;
     76 }
     77