common/syscall/cladm.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 (c) 1998 by Sun Microsystems, Inc.
 * All rights reserved.
 */

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

#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/cladm.h>

/*
 * cladm(2) cluster administation system call.
 */
int
cladm(int fac, int cmd, void *arg)
{
    int error = 0;
    int copyout_bootflags;

    switch (fac) {
    case CL_INITIALIZE:
        if (cmd != CL_GET_BOOTFLAG) {
            error = EINVAL;
            break;
        }

        /*
         * The CLUSTER_INSTALLING and CLUSTER_DCS_ENABLED bootflags are
         * internal flags. We do not want to expose these to the user
         * level.
         */
        copyout_bootflags = (cluster_bootflags &
            ~(CLUSTER_INSTALLING | CLUSTER_DCS_ENABLED));
        if (copyout(&copyout_bootflags, arg, sizeof (int))) {
            error = EFAULT;
        }
        break;

    case CL_CONFIG:
        /*
         * We handle CL_NODEID here so that the node number
         * can be returned if the system is configured as part
         * of a cluster but not booted as part of the cluster.
         */
        if (cmd == CL_NODEID) {
            nodeid_t nid;

            /* return error if not configured as a cluster */
            if (!(cluster_bootflags & CLUSTER_CONFIGURED)) {
                error = ENOSYS;
                break;
            }

            nid = clconf_get_nodeid();
            error = copyout(&nid, arg, sizeof (nid));
            break;
        }
        /* FALLTHROUGH */

    default:
        if ((cluster_bootflags & (CLUSTER_CONFIGURED|CLUSTER_BOOTED)) !=
            (CLUSTER_CONFIGURED|CLUSTER_BOOTED)) {
            error = EINVAL;
            break;
        }
        error = cladmin(fac, cmd, arg);
        /*
         * error will be -1 if the cladm module cannot be loaded;
         * otherwise, it is the errno value returned
         * (see {i86,sparc}/ml/modstubs.s).
         */
        if (error < 0)
            error = ENOSYS;
        break;
    }

    return (error ? set_errno(error) : 0);
}