1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * CDDL HEADER START
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 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * See the License for the specific language governing permissions
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * and limitations under the License.
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 * CDDL HEADER END
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Use is subject to license terms.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * Each group has a listen thread. It is created at the time
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * of a group creation and destroyed when a group does not have
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * any console associated with it.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo * check the state of listen thread. exit if there is an fatal error
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * or the group is removed. Main thread will call free_group
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * to close group socket and free group structure.
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo D1(stderr, "t@%d listen_chk_status() status=%d group=%s "
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo groupp->group_name, groupp->tcp_port, groupp->status);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo "Group:%s TCP port %lld status %x",
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo groupp->group_name, groupp->tcp_port, groupp->status);
bd8f0338e0109a8df4e34499bdf42e592c77eedanarayan /*FALLTHRU*/
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg /* fatal error or no console in the group, remove the group. */
bd8f0338e0109a8df4e34499bdf42e592c77eedanarayan * group is already being deleted, notify main
bd8f0338e0109a8df4e34499bdf42e592c77eedanarayan * thread and exit.
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * if there still is console(s) in the group,
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * the console(s) could not be connected any more because of
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * a fatal error. Therefore, mark the console and notify
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * main thread to delete console and group.
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg /* signal main thread to delete the group */
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg /* log error */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* allocate and initialize listening socket. */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* allocate a socket */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (*sockfd < 0) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* set reuse local socket address */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (setsockopt(*sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof (on))) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* bind socket */
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg for (; ; ) {
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * After a socket is closed, the port
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * is transitioned to TIME_WAIT state.
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * It may take a few retries to bind
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg * a just released port.
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna sizeof (addr)) < 0) {
4d39be2b45b5ac811d28452e6eb629ac64aebfc4sg /* port may be in TIME_WAIT state, retry */
3c96341aef2b4da56c902941f089284b52bd573fnarayan /* woke up by signal? */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo D1(stderr, "t@%d open_socket() sockfd=%d\n", thr_self(), *sockfd);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* ceate console selection thread */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppocreate_console_thread(vntsd_group_t *groupp, int sockfd)
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo D1(stderr, "t@%d create_console_thread@%lld:client@%d\n", thr_self(),
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* allocate a new client */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo clientp = (vntsd_client_t *)malloc(sizeof (vntsd_client_t));
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* initialize the client */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo (void) mutex_init(&clientp->lock, USYNC_THREAD|LOCK_ERRORCHECK, NULL);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* append client to group */
3c96341aef2b4da56c902941f089284b52bd573fnarayan /* check if the group is [being] removed */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if ((rv = vntsd_que_append(&groupp->no_cons_clientpq, clientp))
3c96341aef2b4da56c902941f089284b52bd573fnarayan * allocate thr_arg from heap for console thread so
3c96341aef2b4da56c902941f089284b52bd573fnarayan * that thr_arg is still valid after this function exits.
3c96341aef2b4da56c902941f089284b52bd573fnarayan * console thread will free thr_arg.
3c96341aef2b4da56c902941f089284b52bd573fnarayan thr_arg = (vntsd_thr_arg_t *)malloc(sizeof (vntsd_thr_arg_t));
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* create console selection thread */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo if (thr_create(NULL, 0, (thr_func_t)vntsd_console_thread,
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna thr_arg, THR_DETACHED, &clientp->cons_tid)) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo (void) vntsd_que_rm(&groupp->no_cons_clientpq, clientp);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo/* listen thread */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo D1(stderr, "t@%d listen@%lld\n", thr_self(), groupp->tcp_port);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* initialize listen socket */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo for (; ; ) {
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* listen to the socket */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo newsockfd = accept(groupp->sockfd, (struct sockaddr *)&cli_addr,
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo D1(stderr, "t@%d listen_thread() connected sockfd=%d\n",
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna /* Check authorization if enabled */
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna if ((vntsdp->options & VNTSD_OPT_AUTH_CHECK) != 0) {
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna rv = auth_check_fd(newsockfd, groupp->group_name);
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna D3(stderr, "t@%d listen@%lld group@%s: "
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna "authorization failure\n", thr_self(),
28b1e50e4eed7be353f9778497714aab53ef2a0dSriharsha Basavapatna groupp->tcp_port, groupp->group_name);
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /* a connection is established */
1ae0874509b6811fdde1dfd46f0d93fd09867a3fheppo /*NOTREACHED*/