usr/src/cmd/pagesize/pagesize.c

   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
  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 }