/*
 * 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.
 */

#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);
}