usr/src/lib/sun_sas/common/Sun_sasOpenAdapter.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 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include    <sun_sas.h>
  28
  29 /*
  30  * Opens a named adapter.
  31  * By opening an adapter, an upper level application is ensuring that all access
  32  * to an HBA_HANDLE between and open and a close is to the same adapter.
  33  *
  34  * Sun_sasOpenAdapter just creates a new handle and returns the handle.
  35  * It does not do a driver open
  36  */
  37 HBA_HANDLE Sun_sasOpenAdapter(char *name) {
  38         const char              ROUTINE[] = "Sun_sasOpenAdapter";
  39         struct sun_sas_hba      *hba_ptr;
  40
  41         if (name == NULL) {
  42             log(LOG_DEBUG, ROUTINE, "NULL adapter name.");
  43             return (HANDLE_ERROR);
  44         }
  45         lock(&all_hbas_lock);
  46         for (hba_ptr = global_hba_head; hba_ptr != NULL;
  47                 hba_ptr = hba_ptr->next) {
  48             if (strcmp(hba_ptr->handle_name, name) == 0) {
  49                     break;
  50             }
  51         }
  52         unlock(&all_hbas_lock);
  53         if (hba_ptr == NULL) {
  54             log(LOG_DEBUG, ROUTINE, "Invalid adapter name \"%s\"", name);
  55             return (HANDLE_ERROR);
  56         }
  57
  58         return (CreateHandle(hba_ptr->index));
  59 }