usr/src/lib/mpapi/libmpscsi_vhci/common/MP_EnableAutoFailbackPlugin.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #include <syslog.h>
  27 #include <errno.h>
  28 #include <unistd.h>
  29 #include <stropts.h>
  30
  31 #include "mp_utils.h"
  32
  33
  34 MP_STATUS
  35 MP_EnableAutoFailbackPlugin(void)
  36 {
  37         mp_iocdata_t mp_ioctl;
  38
  39         int ioctlStatus = 0;
  40
  41         MP_STATUS mpStatus = MP_STATUS_SUCCESS;
  42
  43         char chBuffer[256];
  44
  45
  46         log(LOG_INFO, "MP_EnableAutoFailbackPlugin()", " - enter");
  47
  48
  49         if (g_scsi_vhci_fd < 0) {
  50                 log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  51                     "invalid driver file handle");
  52                 log(LOG_INFO, "MP_EnableAutoFailbackPlugin()", " - error exit");
  53                 return (MP_STATUS_FAILED);
  54         }
  55
  56         (void) memset(&mp_ioctl, 0, sizeof (mp_iocdata_t));
  57         (void) memset(&chBuffer, 0, 256);
  58
  59         mp_ioctl.mp_cmd = MP_ENABLE_AUTO_FAILBACK;
  60         mp_ioctl.mp_ibuf = (caddr_t)&chBuffer[0];
  61         mp_ioctl.mp_xfer =  MP_XFER_WRITE;
  62
  63         log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  64                 "mp_ioctl.mp_cmd (MP_ENABLE_AUTO_FAILBACK) : %d",
  65                 mp_ioctl.mp_cmd);
  66
  67         ioctlStatus = ioctl(g_scsi_vhci_fd, MP_CMD, &mp_ioctl);
  68
  69         log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  70                 " IOCTL call returned: %d", ioctlStatus);
  71
  72         if (ioctlStatus < 0) {
  73                 ioctlStatus = errno;
  74         }
  75
  76         if (ioctlStatus != 0) {
  77                 log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  78                     "IOCTL call failed.  IOCTL error is: %d",
  79                         ioctlStatus);
  80                 log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  81                     "IOCTL call failed.  IOCTL error is: %s",
  82                         strerror(ioctlStatus));
  83                 log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  84                     "IOCTL call failed.  mp_ioctl.mp_errno: %x",
  85                         mp_ioctl.mp_errno);
  86
  87                 if (ENOTSUP == ioctlStatus) {
  88                         mpStatus = MP_STATUS_UNSUPPORTED;
  89                 } else if (0 == mp_ioctl.mp_errno) {
  90                         mpStatus = MP_STATUS_FAILED;
  91                 } else {
  92                         mpStatus = getStatus4ErrorCode(mp_ioctl.mp_errno);
  93                 }
  94
  95                 log(LOG_INFO, "MP_EnableAutoFailbackPlugin()",
  96                         " - error exit");
  97
  98                 return (mpStatus);
  99         }
 100
 101
 102         log(LOG_INFO, "MP_EnableAutoFailbackPlugin()", " - exit");
 103
 104         return (MP_STATUS_SUCCESS);
 105 }