xref: /illumos-gate/usr/src/cmd/pagesize/pagesize.c (revision aaceae985c2e78cadef76bf0b7b50ed887ccb3a6)
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 #include <stdio.h>
31 #include <locale.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 #include <sys/mman.h>
35 
36 int
37 main(int argc, char *argv[])
38 {
39 
40 	int c, mps = 0;
41 	size_t *buf;
42 	int nelem, i;
43 
44 	(void) setlocale(LC_ALL, "");
45 #if !defined(TEXT_DOMAIN)	/* Should be defined by cc -D */
46 #define	TEXT_DOMAIN "SYS_TEST"	/* Use this only if it weren't */
47 #endif
48 	(void) textdomain(TEXT_DOMAIN);
49 
50 	while ((c = getopt(argc, (char * const *)argv, "a")) != -1) {
51 		switch (c) {
52 		case 'a':
53 			mps = 1;
54 			break;
55 		case '?':
56 			(void) fprintf(stderr,
57 					gettext("usage: pagesize [-a]\n"));
58 			exit(1);
59 		}
60 	}
61 
62 	if (!mps) {
63 		(void) printf("%d\n", getpagesize());
64 		exit(0);
65 	}
66 
67 	nelem = getpagesizes(NULL, 0);
68 	if (nelem < 2) {
69 		(void) printf("%d\n", getpagesize());
70 		exit(0);
71 	}
72 
73 	if ((buf = (size_t *)malloc(sizeof (*buf) * nelem)) == NULL) {
74 		(void) fprintf(stderr, gettext("Can't get memory\n"));
75 		exit(1);
76 	}
77 
78 	nelem = getpagesizes(buf, nelem);
79 	for (i = 0; i < nelem; i++) {
80 		(void) fprintf(stdout, "%d\n", buf[i]);
81 	}
82 	free(buf);
83 	return (0);
84 }
85