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dm_table.c revision 1.1.2.8 
      1 /*        $NetBSD: dm_table.c,v 1.1.2.8 2008/09/04 00:17:38 haad Exp $      */
      2 
      3 /*
      4  * Copyright (c) 1996, 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Adam Hamsik.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/types.h>
     33 #include <sys/param.h>
     34 
     35 #include <sys/kmem.h>
     36 
     37 #include "dm.h"
     38 
     39 /*
     40  * Destroy all table data. This function should be called with held
     41  * dev_mtx.
     42  */
     43 
     44 int
     45 dm_table_destroy(struct dm_table *head)
     46 {
     47 	struct dm_table_entry *table_en;
     48 
     49 	while (!SLIST_EMPTY(head)) {           /* List Deletion. */
     50 
     51 		table_en = SLIST_FIRST(head);
     52 
     53 		/*
     54 		 * Remove target specific config data. After successfull
     55 		 * call table_en->target_config must be set to NULL.
     56 		 */
     57 		table_en->target->destroy(table_en);
     58 
     59 
     60 		SLIST_REMOVE_HEAD(head, next);
     61 
     62 		kmem_free(table_en, sizeof(*table_en));
     63 	}
     64 
     65 	return 0;
     66 }
     67