/*
 * llmnrd -- LLMNR (RFC 4705) responder daemon.
 *
 * Copyright (C) 2014-2016 Tobias Klauser <tklauser@distanz.ch>
 *
 * This file is part of llmnrd.
 *
 * llmnrd is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 2 of the License.
 *
 * llmnrd is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with llmnrd.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <errno.h>
#include <getopt.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <sys/ioctl.h>
#include <sys/param.h>

#include "compiler.h"
#include "log.h"
#include "util.h"

#include "iface.h"
#include "llmnr.h"
#include "llmnr-packet.h"

static const char *short_opts = "H:i:p:6dhV";
static const struct option long_opts[] = {
	{ "hostname",	required_argument,	NULL, 'H' },
	{ "interface",  required_argument,	NULL, 'i' },
	{ "port",	required_argument,	NULL, 'p' },
	{ "ipv6",	no_argument,		NULL, '6' },
	{ "daemonize",	no_argument,		NULL, 'd' },
	{ "help",	no_argument,		NULL, 'h' },
	{ "version",	no_argument,		NULL, 'V' },
	{ NULL,		0,			NULL, 0 },
};

static void __noreturn usage_and_exit(int status)
{
	fprintf(stdout, "Usage: llmnrd [OPTIONS]\n"
			"Options:\n"
			"  -H, --hostname NAME  set hostname to respond with (default: system hostname)\n"
			"  -i, --interface DEV  bind socket to a specific interface, e.g. eth0\n"
			"  -p, --port NUM       set port number to listen on (default: %d)\n"
			"  -6, --ipv6           enable LLMNR name resolution over IPv6\n"
			"  -d, --daemonize      run as daemon in the background\n"
			"  -h, --help           show this help and exit\n"
			"  -V, --version        show version information and exit\n",
			LLMNR_UDP_PORT);
	exit(status);
}

static void __noreturn version_and_exit(void)
{
	fprintf(stdout, "llmnrd %s %s\n"
			"Copyright (C) 2014-2016 Tobias Klauser <tklauser@distanz.ch>\n"
			"Licensed under the GNU General Public License, version 2\n",
			VERSION_STRING, GIT_VERSION);
	exit(EXIT_SUCCESS);
}

static void signal_handler(int sig)
{
	switch (sig) {
	case SIGINT:
	case SIGQUIT:
	case SIGTERM:
		log_info("Interrupt received. Stopping llmnrd.\n");
		iface_stop();
		llmnr_stop();
		break;
	case SIGHUP:
	default:
		/* ignore */
		break;
	}
}

static void register_signal(int sig, void (*handler)(int))
{
	sigset_t block_mask;
	struct sigaction saction;

	sigfillset(&block_mask);

	saction.sa_handler = handler;
	saction.sa_mask = block_mask;
	saction.sa_flags = SA_RESTART;

	if (sigaction(sig, &saction, NULL) != 0) {
		log_err("Failed to register signal handler for %s (%d)\n",
			strsignal(sig), sig);
	}
}

int main(int argc, char **argv)
{
	int c, ret = EXIT_FAILURE;
	long num_arg;
	bool daemonize = false, ipv6 = false;
	char *hostname = NULL;
	char *iface = NULL;
	uint16_t port = LLMNR_UDP_PORT;

	while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
		switch (c) {
		case 'd':
			daemonize = true;
			break;
		case 'H':
			hostname = xstrdup(optarg);
			break;
		case 'i':
			iface = xstrdup(optarg);
			break;
		case 'p':
			num_arg = strtol(optarg, NULL, 0);
			if (num_arg < 0 || num_arg > UINT16_MAX) {
				log_err("Invalid port number: %ld\n", num_arg);
				return EXIT_FAILURE;
			}
			port = num_arg;
			break;
		case '6':
			ipv6 = true;
			break;
		case 'V':
			version_and_exit();
		case 'h':
			usage_and_exit(EXIT_SUCCESS);
		default:
			usage_and_exit(EXIT_FAILURE);
		}
	}

	register_signal(SIGINT, signal_handler);
	register_signal(SIGQUIT, signal_handler);
	register_signal(SIGTERM, signal_handler);
	register_signal(SIGHUP, signal_handler);

	if (!hostname) {
		hostname = xzalloc(MAXHOSTNAMELEN);
		if (gethostname(hostname, MAXHOSTNAMELEN) != 0) {
			log_err("Failed to get hostname");
			return EXIT_FAILURE;
		}
		hostname[MAXHOSTNAMELEN - 1] = '\0';
	}

	if (daemonize) {
		if (daemon(0, 0) != 0) {
			log_err("Failed to daemonize process: %s\n", strerror(errno));
			return EXIT_FAILURE;
		}
	}

	if (llmnr_init(hostname, port, ipv6, iface) < 0)
		goto out;

	if (iface_start_thread(ipv6, iface) < 0)
		goto out;

	ret = llmnr_run();
out:
	free(hostname);
	return ret;
}
'/cgit.cgi/linux/net-next.git/tree/?id=1b5b19689278069844f0f65bba8ea55facad90f9'>f205b739d5cffbe87f455d83fe88c77f867913b0</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=2cf7b99cf74b435f27e48aa2829300c4d0aa65a0'>2cf7b99cf74b435f27e48aa2829300c4d0aa65a0</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=1b5b19689278069844f0f65bba8ea55facad90f9&amp;id2=2cf7b99cf74b435f27e48aa2829300c4d0aa65a0'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: qcom_spmi: Only use selector based regulator ops</div><div class='commit-msg'>Mixing raw voltage and selector based regulator ops is
inconsistent. This driver already supports some selector based
ops via the list_voltage and set_voltage_time_sel ops but it uses
raw voltage ops for get_voltage and set_voltage. This causes
problems for regulator_set_voltage() and automatic insertion of
slewing delays because set_voltage_time_sel() is only used if the
regulator ops are all selector based. Put another way, delays
aren't happening at all right now when we should be waiting for
voltages to settle. Let's move to pure selector based regulator
ops so that the delays are inserted properly.

Signed-off-by: Stephen Boyd &lt;stephen.boyd@linaro.org&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=1b5b19689278069844f0f65bba8ea55facad90f9'>Diffstat</a></div><table summary='diffstat' class='diffstat'>