1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/*
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * CDDL HEADER START
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * The contents of this file are subject to the terms of the
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Common Development and Distribution License (the "License").
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * You may not use this file except in compliance with the License.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * or http://www.opensolaris.org/os/licensing.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * See the License for the specific language governing permissions
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * and limitations under the License.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * When distributing Covered Code, include this CDDL HEADER in each
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * If applicable, add the following below this CDDL HEADER, with the
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * fields enclosed by brackets "[]" replaced with your own identifying
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * information: Portions Copyright [yyyy] [name of copyright owner]
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * CDDL HEADER END
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/*
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Use is subject to license terms.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#pragma ident "%Z%%M% %I% %E% SMI"
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/*
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * utility for vntsd queue handling
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <stdio.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/types.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/ipc.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <stdlib.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <string.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <unistd.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/socket.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/ipc.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/shm.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <sys/sem.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <wait.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <time.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <netinet/in.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <thread.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include <signal.h>
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo#include "vntsd.h"
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* alloc_que_el() allocates a queue element */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppostatic vntsd_que_t *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoalloc_que_el(void *handle)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *el;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* allocate a queue element */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el = (vntsd_que_t *)malloc(sizeof (vntsd_que_t));
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (el == NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el->nextp = NULL;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el->prevp = NULL;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el->handle = handle;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (el);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* vntsd_que_append() appends a element to a queue */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_que_append(vntsd_que_t **que_hd, void *handle)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *el;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert(que_hd);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert(handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* allocate a queue element */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el = alloc_que_el(handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (el == NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_ERR_NO_MEM);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = *que_hd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p == NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* first one */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *que_hd = el;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo } else {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* walk to the last one */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (p->nextp != NULL)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p->nextp = el;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el->prevp = p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_SUCCESS);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* vntsd_que_insert_after() inserts element arter the handle */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_que_insert_after(vntsd_que_t *que, void *handle, void *next)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *q, *el;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert(que);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo q = que;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (q != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (q->handle == handle) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo break;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo q = q->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (q == NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* not in queue */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_ERR_EL_NOT_FOUND);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el = alloc_que_el(next);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (el == NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_ERR_NO_MEM);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el->nextp = q->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo q->nextp = el;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo el->prevp = q;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_SUCCESS);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* vntsd_que_rm() removes an element from a queue */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppoint
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_que_rm(vntsd_que_t **que_hd, void *handle)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *p = *que_hd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *prevp = NULL;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (p != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* match handle */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p->handle == handle) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo break;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo prevp = p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p == NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* not found */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_ERR_EL_NOT_FOUND);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* found */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p == *que_hd) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* first one */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *que_hd = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo } else {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo prevp->nextp = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p->nextp != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p->nextp->prevp = prevp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo handle = p->handle;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo free(p);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_SUCCESS);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* vntsd_que_walk() - walk queue and apply function to each element */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovoid *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_que_walk(vntsd_que_t *que_hd, el_func_t el_func)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *p = que_hd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (p != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if ((*el_func)(p->handle)) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (p->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (VNTSD_SUCCESS);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* vntsd_que_find() finds first match */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovoid *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_que_find(vntsd_que_t *que_hd, compare_func_t compare_func, void *data)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *p = que_hd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert(compare_func != NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (p != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if ((*compare_func)(p->handle, data)) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* found match */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (p->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* not found */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* vntsd_free_que() frees entire queue */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovoid
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_free_que(vntsd_que_t **q, clean_func_t clean_func)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *p;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (*q != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = *q;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo *q = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (clean_func) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* clean func will free the handle */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo (*clean_func)(p->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo } else {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo free(p->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo free(p);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/*
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * vntsd_que_pos() matches a handle and returns a handle located at "pos"
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * relative to the matched handle. pos supported are 1 or -1.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovoid *
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppovntsd_que_pos(vntsd_que_t *que_hd, void *handle, int pos)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo{
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo vntsd_que_t *p = que_hd;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert((pos == 1) || (pos == -1));
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (p != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p->handle == handle) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* find match */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (pos == 1) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* forward 1 */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p->nextp != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (p->nextp->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* last one go to first */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (que_hd->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo } else {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* backward 1 */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (p->prevp != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (p->prevp->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* first one, return last one */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo while (p->nextp != NULL) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert(p != NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo assert(p->handle != NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (p->handle);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo p = p->nextp;
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo }
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo DERR(stderr, "t@%d vntsd_que_pos can not find handle \n",
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo thr_self());
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo return (NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo}