cmd/pagesize/pagesize.c

	pagesize.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>

int
main(int argc, const char **argv[])
{

    int c, mps = 0;
    size_t *buf;
    int nelem, i;

    (void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)   /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST"  /* Use this only if it weren't */
#endif
    (void) textdomain(TEXT_DOMAIN);

    while ((c = getopt(argc, (char * const *)argv, "a")) != -1) {
        switch (c) {
        case 'a':
            mps = 1;
            break;
        case '?':
            (void) fprintf(stderr,
                    gettext("usage: pagesize [-a]\n"));
            exit(1);
        }
    }

    if (!mps) {
        (void) printf("%d\n", getpagesize());
        exit(0);
    }

    nelem = getpagesizes(NULL, 0);
    if (nelem < 2) {
        (void) printf("%d\n", getpagesize());
        exit(0);
    }

    if ((buf = (size_t *)malloc(sizeof (*buf) * nelem)) == NULL) {
        (void) fprintf(stderr, gettext("Can't get memory\n"));
        exit(1);
    }

    nelem = getpagesizes(buf, nelem);
    for (i = 0; i < nelem; i++) {
        (void) fprintf(stdout, "%d\n", buf[i]);
    }
    free(buf);
    return (0);
}