cmd/zonename/zonename.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <libintl.h>
#include <zone.h>
#include <libzonecfg.h>
#include <dlfcn.h>
#include <sys/zone.h>

#if !defined(TEXT_DOMAIN)       /* should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST"  /* Use this only if it wasn't */
#endif

/*
 * -t prints "shared" vs. "exclusive"
 */
int
main(int argc, char *argv[])
{
    zoneid_t zoneid;
    char zonename[ZONENAME_MAX];
    FILE *fp;
    int arg;
    boolean_t stacktype = B_FALSE;

    (void) setlocale(LC_ALL, "");
    (void) textdomain(TEXT_DOMAIN);

    opterr = 0;
    while ((arg = getopt(argc, argv, "t")) != EOF) {
        switch (arg) {
        case 't':
            stacktype = B_TRUE;
            break;
        }
    }

    zoneid = getzoneid();

    if (stacktype) {
        ushort_t flags;

        if (zone_getattr(zoneid, ZONE_ATTR_FLAGS, &flags,
            sizeof (flags)) < 0) {
            perror("could not determine zone IP type");
            exit(1);
        }
        if (flags & ZF_NET_EXCL)
            (void) puts("exclusive");
        else
            (void) puts("shared");
        return (0);
    }

    if (getzonenamebyid(zoneid, zonename, sizeof (zonename)) < 0) {
        (void) fputs(gettext("could not determine zone name\n"),
            stderr);
        return (1);
    }

    /*
     * The use of dlopen here is a bit ugly, but it allows zonename to
     * function properly before /usr is mounted.  On such a system, scratch
     * zones don't exist, so no translation is necessary.
     */
    if (dlopen("libzonecfg.so.1", RTLD_NOW | RTLD_GLOBAL) != NULL &&
        zonecfg_is_scratch(zonename) &&
        (fp = zonecfg_open_scratch("", B_FALSE)) != NULL) {
        (void) zonecfg_reverse_scratch(fp, zonename, zonename,
            sizeof (zonename), NULL, 0);
        zonecfg_close_scratch(fp);
    }
    (void) puts(zonename);
    return (0);
}