xref: /titanic_51/usr/src/lib/libc/port/gen/getrusage.c (revision 37714ae43602c675f9dc59b070bfdf9fa702872c)
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