libmpscsi_vhci/common/MP_EnableAutoFailbackPlugin.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 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <syslog.h>
#include <errno.h>
#include <unistd.h>
#include <stropts.h>

#include "mp_utils.h"


MP_STATUS
MP_EnableAutoFailbackPlugin(void)
{
    mp_iocdata_t mp_ioctl;

    int ioctlStatus = 0;

    MP_STATUS mpStatus = MP_STATUS_SUCCESS;

    char chBuffer[256];


    log(LOG_INFO, "MP_EnableAutoFailbackPlugin()", " - enter");


    if (g_scsi_vhci_fd < 0) {
        log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
            "invalid driver file handle");
        log(LOG_INFO, "MP_EnableAutoFailbackPlugin()", " - error exit");
        return (MP_STATUS_FAILED);
    }

    (void) memset(&mp_ioctl, 0, sizeof (mp_iocdata_t));
    (void) memset(&chBuffer, 0, 256);

    mp_ioctl.mp_cmd = MP_ENABLE_AUTO_FAILBACK;
    mp_ioctl.mp_ibuf = (caddr_t)&chBuffer[0];
    mp_ioctl.mp_xfer =  MP_XFER_WRITE;

    log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
        "mp_ioctl.mp_cmd (MP_ENABLE_AUTO_FAILBACK) : %d",
        mp_ioctl.mp_cmd);

    ioctlStatus = ioctl(g_scsi_vhci_fd, MP_CMD, &mp_ioctl);

    log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
        " IOCTL call returned: %d", ioctlStatus);

    if (ioctlStatus < 0) {
        ioctlStatus = errno;
    }

    if (ioctlStatus != 0) {
        log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
            "IOCTL call failed.  IOCTL error is: %d",
            ioctlStatus);
        log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
            "IOCTL call failed.  IOCTL error is: %s",
            strerror(ioctlStatus));
        log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
            "IOCTL call failed.  mp_ioctl.mp_errno: %x",
            mp_ioctl.mp_errno);

        if (ENOTSUP == ioctlStatus) {
            mpStatus = MP_STATUS_UNSUPPORTED;
        } else if (0 == mp_ioctl.mp_errno) {
            mpStatus = MP_STATUS_FAILED;
        } else {
            mpStatus = getStatus4ErrorCode(mp_ioctl.mp_errno);
        }

        log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
            " - error exit");

        return (mpStatus);
    }


    log(LOG_INFO, "MP_EnableAutoFailbackPlugin()", " - exit");

    return (MP_STATUS_SUCCESS);
}