示例#1
0
static void
ns_interfacemgr_scan0(ns_interfacemgr_t *mgr, ns_listenlist_t *ext_listen,
		      isc_boolean_t verbose)
{
	isc_boolean_t purge = ISC_TRUE;

	REQUIRE(NS_INTERFACEMGR_VALID(mgr));

	mgr->generation++;	/* Increment the generation count. */

	if (do_scan(mgr, ext_listen, verbose) != ISC_R_SUCCESS)
		purge = ISC_FALSE;

	/*
	 * Now go through the interface list and delete anything that
	 * does not have the current generation number.  This is
	 * how we catch interfaces that go away or change their
	 * addresses.
	 */
	if (purge)
		purge_old_interfaces(mgr);

	/*
	 * Warn if we are not listening on any interface, unless
	 * we're in lwresd-only mode, in which case that is to
	 * be expected.
	 */
	if (ext_listen == NULL &&
	    ISC_LIST_EMPTY(mgr->interfaces) && ! ns_g_lwresdonly) {
		isc_log_write(IFMGR_COMMON_LOGARGS, ISC_LOG_WARNING,
			      "not listening on any interfaces");
	}
}
示例#2
0
void
ns_interfacemgr_attach(ns_interfacemgr_t *source, ns_interfacemgr_t **target) {
	REQUIRE(NS_INTERFACEMGR_VALID(source));
	LOCK(&source->lock);
	INSIST(source->references > 0);
	source->references++;
	UNLOCK(&source->lock);
	*target = source;
}
示例#3
0
static void
ns_interfacemgr_destroy(ns_interfacemgr_t *mgr) {
	REQUIRE(NS_INTERFACEMGR_VALID(mgr));
	dns_aclenv_destroy(&mgr->aclenv);
	ns_listenlist_detach(&mgr->listenon4);
	ns_listenlist_detach(&mgr->listenon6);
	clearlistenon(mgr);
	DESTROYLOCK(&mgr->lock);
	mgr->magic = 0;
	isc_mem_putanddetach(&mgr->mctx, mgr, sizeof(*mgr));
}
示例#4
0
void
ns_interfacemgr_shutdown(ns_interfacemgr_t *mgr) {
	REQUIRE(NS_INTERFACEMGR_VALID(mgr));

	/*%
	 * Shut down and detach all interfaces.
	 * By incrementing the generation count, we make purge_old_interfaces()
	 * consider all interfaces "old".
	 */
	mgr->generation++;
	purge_old_interfaces(mgr);
}
示例#5
0
void
ns_interfacemgr_detach(ns_interfacemgr_t **targetp) {
	isc_result_t need_destroy = ISC_FALSE;
	ns_interfacemgr_t *target = *targetp;
	REQUIRE(target != NULL);
	REQUIRE(NS_INTERFACEMGR_VALID(target));
	LOCK(&target->lock);
	REQUIRE(target->references > 0);
	target->references--;
	if (target->references == 0)
		need_destroy = ISC_TRUE;
	UNLOCK(&target->lock);
	if (need_destroy)
		ns_interfacemgr_destroy(target);
	*targetp = NULL;
}
示例#6
0
static void
ns_interfacemgr_destroy(ns_interfacemgr_t *mgr) {
	REQUIRE(NS_INTERFACEMGR_VALID(mgr));

#ifdef USE_ROUTE_SOCKET
	if (mgr->route != NULL)
		isc_socket_detach(&mgr->route);
	if (mgr->task != NULL)
		isc_task_detach(&mgr->task);
#endif
	dns_aclenv_destroy(&mgr->aclenv);
	ns_listenlist_detach(&mgr->listenon4);
	ns_listenlist_detach(&mgr->listenon6);
	clearlistenon(mgr);
	DESTROYLOCK(&mgr->lock);
	mgr->magic = 0;
	isc_mem_putanddetach(&mgr->mctx, mgr, sizeof(*mgr));
}
示例#7
0
void
ns_interfacemgr_shutdown(ns_interfacemgr_t *mgr) {
	REQUIRE(NS_INTERFACEMGR_VALID(mgr));

	/*%
	 * Shut down and detach all interfaces.
	 * By incrementing the generation count, we make purge_old_interfaces()
	 * consider all interfaces "old".
	 */
	mgr->generation++;
#ifdef USE_ROUTE_SOCKET
	LOCK(&mgr->lock);
	if (mgr->route != NULL) {
		isc_socket_cancel(mgr->route, mgr->task, ISC_SOCKCANCEL_RECV);
		isc_socket_detach(&mgr->route);
		isc_task_detach(&mgr->task);
	}
	UNLOCK(&mgr->lock);
#endif
	purge_old_interfaces(mgr);
}
示例#8
0
static isc_result_t
ns_interface_create(ns_interfacemgr_t *mgr, isc_sockaddr_t *addr,
		    const char *name, ns_interface_t **ifpret)
{
	ns_interface_t *ifp;
	isc_result_t result;
	int disp;

	REQUIRE(NS_INTERFACEMGR_VALID(mgr));

	ifp = isc_mem_get(mgr->mctx, sizeof(*ifp));
	if (ifp == NULL)
		return (ISC_R_NOMEMORY);

	ifp->mgr = NULL;
	ifp->generation = mgr->generation;
	ifp->addr = *addr;
	ifp->flags = 0;
	strncpy(ifp->name, name, sizeof(ifp->name));
	ifp->name[sizeof(ifp->name)-1] = '\0';
	ifp->clientmgr = NULL;

	result = isc_mutex_init(&ifp->lock);
	if (result != ISC_R_SUCCESS)
		goto lock_create_failure;

	result = ns_clientmgr_create(mgr->mctx, mgr->taskmgr,
				     ns_g_timermgr,
				     &ifp->clientmgr);
	if (result != ISC_R_SUCCESS) {
		isc_log_write(IFMGR_COMMON_LOGARGS, ISC_LOG_ERROR,
			      "ns_clientmgr_create() failed: %s",
			      isc_result_totext(result));
		goto clientmgr_create_failure;
	}

	for (disp = 0; disp < MAX_UDP_DISPATCH; disp++)
		ifp->udpdispatch[disp] = NULL;

	ifp->tcpsocket = NULL;

	/*
	 * Create a single TCP client object.  It will replace itself
	 * with a new one as soon as it gets a connection, so the actual
	 * connections will be handled in parallel even though there is
	 * only one client initially.
	 */
	ifp->ntcptarget = 1;
	ifp->ntcpcurrent = 0;
	ifp->nudpdispatch = 0;

	ISC_LINK_INIT(ifp, link);

	ns_interfacemgr_attach(mgr, &ifp->mgr);
	ISC_LIST_APPEND(mgr->interfaces, ifp, link);

	ifp->references = 1;
	ifp->magic = IFACE_MAGIC;
	*ifpret = ifp;

	return (ISC_R_SUCCESS);

 clientmgr_create_failure:
	DESTROYLOCK(&ifp->lock);

 lock_create_failure:
	ifp->magic = 0;
	isc_mem_put(mgr->mctx, ifp, sizeof(*ifp));

	return (ISC_R_UNEXPECTED);
}
示例#9
0
isc_boolean_t
ns_interfacemgr_islistening(ns_interfacemgr_t *mgr) {
	REQUIRE(NS_INTERFACEMGR_VALID(mgr));

	return (ISC_LIST_EMPTY(mgr->interfaces) ? ISC_FALSE : ISC_TRUE);
}