inj_list.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <inj_err.h>
#include <inj_list.h>
#include <assert.h>
#include <unistd.h>
void
inj_list_append(inj_list_t *mlp, void *new)
{
inj_list_t *p = mlp->ml_prev; /* p = tail list element */
inj_list_t *q = new; /* q = new list element */
mlp->ml_prev = q;
q->ml_prev = p;
q->ml_next = NULL;
if (p != NULL) {
assert(p->ml_next == NULL);
p->ml_next = q;
} else {
assert(mlp->ml_next == NULL);
mlp->ml_next = q;
}
}
void
inj_list_prepend(inj_list_t *mlp, void *new)
{
inj_list_t *p = new; /* p = new list element */
inj_list_t *q = mlp->ml_next; /* q = head list element */
mlp->ml_next = p;
p->ml_prev = NULL;
p->ml_next = q;
if (q != NULL) {
assert(q->ml_prev == NULL);
q->ml_prev = p;
} else {
assert(mlp->ml_prev == NULL);
mlp->ml_prev = p;
}
}