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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
     28 /*	  All Rights Reserved  	*/
     29 
     30 /*
     31  * Portions of this source code were derived from Berkeley 4.3 BSD
     32  * under license from the Regents of the University of California.
     33  */
     34 
     35 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     36 
     37 /*
     38  * Compatibility lib for BSD's getrusgae(). Only the
     39  * CPU time usage is supported for RUSAGE_CHILDREN, and hence does not
     40  * fully support BSD's rusage semantics.
     41  */
     42 
     43 #include "lint.h"
     44 #include <sys/types.h>
     45 #include <sys/time.h>
     46 #include <sys/times.h>
     47 #include <stdio.h>
     48 #include <sys/param.h>
     49 #include <errno.h>
     50 #include <sys/resource.h>
     51 #include <sys/vm_usage.h>
     52 #include <fcntl.h>
     53 #include <sys/fcntl.h>
     54 #include <procfs.h>
     55 #include <string.h>
     56 #include <unistd.h>
     57 
     58 int __rusagesys(int, struct rusage *);
     59 
     60 int
     61 getrusage(int who, struct rusage *rusage)
     62 {
     63 	switch (who) {
     64 
     65 	case RUSAGE_SELF:
     66 		return (__rusagesys(_RUSAGESYS_GETRUSAGE, rusage));
     67 
     68 	case RUSAGE_LWP:
     69 		return (__rusagesys(_RUSAGESYS_GETRUSAGE_LWP, rusage));
     70 
     71 	case RUSAGE_CHILDREN:
     72 		return (__rusagesys(_RUSAGESYS_GETRUSAGE_CHLD, rusage));
     73 
     74 	default:
     75 		errno = EINVAL;
     76 		return (-1);
     77 	}
     78 }
     79 
     80 int
     81 getvmusage(uint_t flags, time_t age, vmusage_t *buf, size_t *nres)
     82 {
     83 	return (syscall(SYS_rusagesys, _RUSAGESYS_GETVMUSAGE, flags, age,
     84 	    buf, nres));
     85 }
     86