cmd/clinfo/clinfo.c

/*
 * 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 2016 Nexenta Systems, Inc.  All rights reserved.
 */

/*
 * Copyright (c) 1998 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <locale.h>
#include <sys/cladm.h>

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

static char *cmdname;

static void errmsg(char *);
static void usage();

int
main(int argc, char **argv)
{
    int c, bootflags;
    nodeid_t nid, hid;
    char *cp = "";

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

    cmdname = argv[0];  /* put actual command name in messages */

    if (_cladm(CL_INITIALIZE, CL_GET_BOOTFLAG, &bootflags) != 0) {
        errmsg("_cladm(CL_INITIALIZE, CL_GET_BOOTFLAG)");
        return (1);
    }

    while ((c = getopt(argc, argv, "bnh")) != EOF) {
        switch (c) {
        case 'b':   /* print boot flags */
            (void) printf("%s%u\n", cp, bootflags);
            break;

        case 'n':   /* print our node number */
            if (_cladm(CL_CONFIG, CL_NODEID, &nid) != 0) {
                errmsg("node is not configured as part of a "
                    "cluster");
                return (1);
            }
            (void) printf("%s%u\n", cp, nid);
            break;

        case 'h':   /* print the highest node number */
            if (_cladm(CL_CONFIG, CL_HIGHEST_NODEID, &hid) != 0) {
                errmsg("node is not booted as part of a "
                    "cluster");
                return (1);
            }
            (void) printf("%s%u\n", cp, hid);
            break;

        default:
            usage();
            return (1);
        }
        cp = " ";
    }

    /*
     * Return exit status of one (error) if not booted as a cluster.
     */
    return (bootflags & CLUSTER_BOOTED ? 0 : 1);
}

static void
errmsg(char *msg)
{
    int save_error;

    save_error = errno;     /* in case fprintf changes errno */
    (void) fprintf(stderr, "%s: ", cmdname);
    errno = save_error;
    perror(msg);
}

static void
usage()
{
    (void) fprintf(stderr, "%s: %s -[bnh]\n", gettext("usage"), cmdname);
}