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#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <inj_err.h>
30#include <inj_list.h>
31
32#include <assert.h>
33#include <unistd.h>
34
35void
36inj_list_append(inj_list_t *mlp, void *new)
37{
38	inj_list_t *p = mlp->ml_prev;	/* p = tail list element */
39	inj_list_t *q = new;		/* q = new list element */
40
41	mlp->ml_prev = q;
42	q->ml_prev = p;
43	q->ml_next = NULL;
44
45	if (p != NULL) {
46		assert(p->ml_next == NULL);
47		p->ml_next = q;
48	} else {
49		assert(mlp->ml_next == NULL);
50		mlp->ml_next = q;
51	}
52}
53
54void
55inj_list_prepend(inj_list_t *mlp, void *new)
56{
57	inj_list_t *p = new;		/* p = new list element */
58	inj_list_t *q = mlp->ml_next;	/* q = head list element */
59
60	mlp->ml_next = p;
61	p->ml_prev = NULL;
62	p->ml_next = q;
63
64	if (q != NULL) {
65		assert(q->ml_prev == NULL);
66		q->ml_prev = p;
67	} else {
68		assert(mlp->ml_prev == NULL);
69		mlp->ml_prev = p;
70	}
71}
72