OpenSolaris_b135/lib/mpapi/libmpscsi_vhci/common/Sun_MP_SendScsiCmd.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 <sys/scsi/impl/uscsi.h>

#include "mp_utils.h"


/*
 *	Called by the common layer to request to steer a path
 */

MP_STATUS
Sun_MP_SendScsiCmd(MP_OID pathOid, struct uscsi_cmd *cmd)
{
	mp_iocdata_t mp_ioctl;

	int ioctlStatus = 0;

	MP_STATUS mpStatus = MP_STATUS_SUCCESS;

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

	log(LOG_INFO, "Sun_MP_SendScsiCmd()",
		"pathOid.objectSequenceNumber = %llx",
		pathOid.objectSequenceNumber);

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

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

	mp_ioctl.mp_cmd  = MP_SEND_SCSI_CMD;
	mp_ioctl.mp_ibuf = (caddr_t)&pathOid.objectSequenceNumber;
	mp_ioctl.mp_ilen = sizeof (pathOid.objectSequenceNumber);
	mp_ioctl.mp_xfer =
	    ((cmd->uscsi_flags & USCSI_READ) ? MP_XFER_READ : MP_XFER_WRITE);
	mp_ioctl.mp_obuf = (char *)cmd;
	mp_ioctl.mp_olen = sizeof (*cmd);

	log(LOG_INFO, "Sun_MP_SendScsiCmd()",
		"mp_ioctl.mp_cmd (MP_SEND_SCSI_CMD) : %d",
		mp_ioctl.mp_cmd);

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

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

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

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

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

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

		return (mpStatus);
	}


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

	return (MP_STATUS_SUCCESS);
}