usr/src/cmd/fm/fminject/common/inj_list.h

   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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _INJ_LIST_H
  28 #define _INJ_LIST_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * Simple doubly-linked list implementation.  This implementation assumes that
  38  * each element contains an embedded inj_list_t structure.  An additional
  39  * inj_list_t is used to store the head and tail pointers.  The caller can
  40  * use inj_list_prev() on the master list_t to obtain the tail element, or
  41  * inj_list_next() to obtain the head element.  The head and tail list elements
  42  * have their previous and next pointers set to NULL, respectively.
  43  */
  44
  45 typedef struct inj_list {
  46         struct inj_list *ml_prev;       /* Link to previous list element */
  47         struct inj_list *ml_next;       /* Link to next list element */
  48 } inj_list_t;
  49
  50 #define inj_list_prev(elem)     ((void *)(((inj_list_t *)(elem))->ml_prev))
  51 #define inj_list_next(elem)     ((void *)(((inj_list_t *)(elem))->ml_next))
  52
  53 extern void inj_list_append(inj_list_t *, void *);
  54 extern void inj_list_prepend(inj_list_t *, void *);
  55
  56 #ifdef  __cplusplus
  57 }
  58 #endif
  59
  60 #endif  /* _INJ_LIST_H */