xref: /illumos-gate/usr/src/cmd/pagesize/pagesize.c (revision 43a29105)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <stdio.h>
33 #include <locale.h>
34 #include <stdlib.h>
35 #include <unistd.h>
36 #include <sys/mman.h>
37 
38 int
main(int argc,char * argv[])39 main(int argc, char *argv[])
40 {
41 
42 	int c, mps = 0;
43 	size_t *buf;
44 	int nelem, i;
45 
46 	(void) setlocale(LC_ALL, "");
47 #if !defined(TEXT_DOMAIN)	/* Should be defined by cc -D */
48 #define	TEXT_DOMAIN "SYS_TEST"	/* Use this only if it weren't */
49 #endif
50 	(void) textdomain(TEXT_DOMAIN);
51 
52 	while ((c = getopt(argc, (char * const *)argv, "a")) != -1) {
53 		switch (c) {
54 		case 'a':
55 			mps = 1;
56 			break;
57 		case '?':
58 			(void) fprintf(stderr,
59 					gettext("usage: pagesize [-a]\n"));
60 			exit(1);
61 		}
62 	}
63 
64 	if (!mps) {
65 		(void) printf("%d\n", getpagesize());
66 		exit(0);
67 	}
68 
69 	nelem = getpagesizes(NULL, 0);
70 	if (nelem < 2) {
71 		(void) printf("%d\n", getpagesize());
72 		exit(0);
73 	}
74 
75 	if ((buf = (size_t *)malloc(sizeof (*buf) * nelem)) == NULL) {
76 		(void) fprintf(stderr, gettext("Can't get memory\n"));
77 		exit(1);
78 	}
79 
80 	nelem = getpagesizes(buf, nelem);
81 	for (i = 0; i < nelem; i++) {
82 		(void) fprintf(stdout, "%d\n", buf[i]);
83 	}
84 	free(buf);
85 	return (0);
86 }
87