148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * CDDL HEADER START
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * The contents of this file are subject to the terms of the
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Common Development and Distribution License (the "License").
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * You may not use this file except in compliance with the License.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * See the License for the specific language governing permissions
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * and limitations under the License.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * When distributing Covered Code, include this CDDL HEADER in each
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * If applicable, add the following below this CDDL HEADER, with the
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * fields enclosed by brackets "[]" replaced with your own identifying
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * information: Portions Copyright [yyyy] [name of copyright owner]
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * CDDL HEADER END
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * smbd NIC monitor.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright/* Use this to stop monitoring */
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright/* Use this to refresh service instance */
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wrightstatic void smbd_nicmon_run_check(void);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wrightstatic int smbd_nicmon_setup_eventpipe(int *, int *);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wrightstatic void *smbd_nicmon_daemon(void *);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Start the nic monitor thread.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright rc = pthread_create(&smbd_nicmon_tid, NULL, smbd_nicmon_daemon, NULL);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright (void) write(eventpipe_write, &buf, sizeof (buf));
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * The monitor is enabled unless it is explicitly
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * disabled by setting smbd/nicmon_enable to false.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * smbd/nicmon_enable is not defined by default.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright if ((hd = smb_smf_scf_init(SMBD_FMRI_PREFIX)) == NULL) {
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: smb_smf_scf_init failed");
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright rc = smb_smf_create_service_pgroup(hd, SMBD_PG_NAME);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: smb_smf_create_service_pgroup failed");
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright rc = smb_smf_get_boolean_property(hd, SMBD_NICMON_ENABLE, &status);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Setup routing socket for getting RTM messages.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright if ((sd = socket(PF_ROUTE, SOCK_RAW, af)) == -1) {
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: routing socket failed: %d", errno);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: fcntl F_GETFL failed: %d", errno);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright if ((fcntl(sd, F_SETFL, flags | O_NONBLOCK)) < 0) {
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: fcntl F_SETFL failed: %d", errno);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright /* Read as many messages as possible and try to empty the sockets */
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: short read: %d of %d",
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Create pipe for signal delivery and set up signal handlers.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wrightsmbd_nicmon_setup_eventpipe(int *read_pipe, int *write_pipe)
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright return (-1);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Create the global routing socket to monitor changes in NIC interfaces.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * We are only interested in new inerface addition/deletion and changes
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * in UP/DOWN status.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Note: only supports AF_INET routing socket. Need to add AF_INET6 to
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * support IPv6.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wrightstatic void *
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright if ((rtsock_v4 = smbd_nicmon_setup_rtsock(AF_INET)) == -1)
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright rc = smbd_nicmon_setup_eventpipe(&eventpipe_read, &eventpipe_write);
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * Listen for activity on any of the sockets.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * The delay before checking the rtsock will hopefully
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * smooth things out when there is a lot of activity.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright for (i = 0; i < pollfd_num; i++) {
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * If the monitor is enabled and something has changed,
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright * refresh the registered SMF service.
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright if (smf_refresh_instance(smbd_nicmon_caller_fmri) != 0)
148c5f43199ca0b43fc8e3b643aab11cd66ea327Alan Wright "smbd_nicmon: %s refresh failed",