build: Remove support for usage of kdbus

Makefile.am

@@ -83,7 +83,7 @@ src_iwd_SOURCES = src/main.c linux/nl80211.h \
 					src/iwd.h
 src_iwd_LDADD = ell/libell-internal.la -ldl
 
-client_iwctl_SOURCES = client/main.c src/kdbus.h src/kdbus.c
+client_iwctl_SOURCES = client/main.c
 client_iwctl_LDADD = ell/libell-internal.la
 
 monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \

README

@@ -48,34 +48,6 @@ will happen when building the Wireless daemon and it will then be linked
 internally.
 
 
-Kernel dependencies
-===================
-
-In order to use this daemon and control utility the kdbus kernel module
-is required. The development repositories can be found here:
-
-	https://github.com/gregkh/kdbus
-	https://code.google.com/p/d-bus/
-
-The daemon will start its own private bus that is located at the /dev/kdbus
-device hierarchy:
-
-	/dev/kdbus
-	|--- control
-	`--- 0-iwd
-	     `--- bus
-
-When started as root, the new private bus will be /dev/kdbus/0-iwd/bus
-and it can be verified with the busctl utility from systemd:
-
-	# busctl --address=kernel:path=/dev/kdbus/0-iwd/bus
-	NAME       PID  PROCESS     USER      CONNECTION    CONNECTION-NAME
-	:1.1     62151  iwd         root      :1.1          iwd
-	:1.2     62153  busctl      root      :1.2          sd-busctl
-
-Clients talking to the daemon must specifiy the private bus address.
-
-
 Netlink monitoring
 ==================
 

client/main.c

@@ -28,8 +28,6 @@
 #include <stdio.h>
 #include <ell/ell.h>
 
-#include "src/kdbus.h"
-
 static void signal_handler(struct l_signal *signal, uint32_t signo,
 				void *user_data)
 {
@@ -63,8 +61,6 @@ static void signal_message(struct l_dbus_message *message, void *user_data)
 
 int main(int argc, char *argv[])
 {
-	char *bus_name;
-	char bus_address[64];
 	int exit_status;
 	struct l_dbus *dbus;
 	struct l_signal *signal;
@@ -82,19 +78,7 @@ int main(int argc, char *argv[])
 	l_log_set_stderr();
 	l_debug_enable("*");
 
-	bus_name = kdbus_lookup_bus();
+	dbus = l_dbus_new_default(L_DBUS_SYSTEM_BUS);
-	if (!bus_name) {
-		exit_status = EXIT_FAILURE;
-		goto done;
-	}
-
-	l_debug("Bus location: %s", bus_name);
-
-	snprintf(bus_address, sizeof(bus_address), "kernel:path=%s", bus_name);
-
-	l_free(bus_name);
-
-	dbus = l_dbus_new(bus_address);
 	if (!dbus) {
 		exit_status = EXIT_FAILURE;
 		goto done;

src/dbus.c

@@ -33,7 +33,6 @@
 #include "src/agent.h"
 
 struct l_dbus *g_dbus = 0;
-static int kdbus_fd = -1;
 
 static void do_debug(const char *str, void *user_data)
 {
@@ -199,31 +198,9 @@ struct l_dbus *dbus_get_bus(void)
 	return g_dbus;
 }
 
-bool dbus_init(bool enable_debug, bool use_kdbus)
+bool dbus_init(bool enable_debug)
 {
-	if (!use_kdbus)
 	g_dbus = l_dbus_new_default(L_DBUS_SYSTEM_BUS);
-	else {
-		char bus_name[32], bus_address[64];
-
-		snprintf(bus_name, sizeof(bus_name), "%u-iwd", getuid());
-
-		kdbus_fd = _dbus_kernel_create_bus(bus_name);
-		if (kdbus_fd < 0)
-			return false;
-
-		snprintf(bus_address, sizeof(bus_address),
-				"kernel:path=/dev/kdbus/%s/bus", bus_name);
-
-		l_debug("Bus location: %s", bus_address);
-
-		g_dbus = l_dbus_new(bus_address);
-
-		if (!g_dbus) {
-			close(kdbus_fd);
-			return false;
-		}
-	}
 
 	if (enable_debug)
 		l_dbus_set_debug(g_dbus, do_debug, "[DBUS] ", NULL);
@@ -241,9 +218,6 @@ bool dbus_exit(void)
 	l_dbus_destroy(g_dbus);
 	g_dbus = NULL;
 
-	if (kdbus_fd >= 0)
-		close(kdbus_fd);
-
 	return true;
 }
 

src/dbus.h

@@ -64,6 +64,6 @@ struct l_dbus_message *dbus_error_no_agent(struct l_dbus_message *msg);
 struct l_dbus_message *dbus_error_not_connected(struct l_dbus_message *msg);
 struct l_dbus_message *dbus_error_not_implemented(struct l_dbus_message *msg);
 
-bool dbus_init(bool enable_debug, bool use_kdbus);
+bool dbus_init(bool enable_debug);
 bool dbus_exit(void);
 void dbus_shutdown(void);

src/kdbus.c

@@ -1,52 +0,0 @@
-/*
- *
- *  Wireless daemon for Linux
- *
- *  Copyright (C) 2013-2014  Intel Corporation. All rights reserved.
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- *
- *  This library 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
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <glob.h>
-#include <ell/ell.h>
-
-#include "src/kdbus.h"
-
-char *kdbus_lookup_bus(void)
-{
-	glob_t gl;
-	char *path = NULL;
-
-	if (glob("/dev/kdbus/*-iwd/bus", GLOB_ONLYDIR, NULL, &gl)) {
-		l_error("Failed to lookup bus directory");
-		return NULL;
-	}
-
-	if (gl.gl_pathc < 1) {
-		l_error("Failed to lookup bus endpoint");
-		return NULL;
-	}
-
-	path = l_strdup(gl.gl_pathv[0]);
-
-	globfree(&gl);
-
-	return path;
-}

src/kdbus.h

@@ -1,23 +0,0 @@
-/*
- *
- *  Wireless daemon for Linux
- *
- *  Copyright (C) 2013-2014  Intel Corporation. All rights reserved.
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- *
- *  This library 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
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- */
-
-char *kdbus_lookup_bus(void);

src/main.c

@@ -76,15 +76,13 @@ static void usage(void)
 		"Usage:\n");
 	printf("\tiwd [options]\n");
 	printf("Options:\n"
-		"\t-B, --dbus-debug       Enable DBus debugging\n"
+		"\t-B, --dbus-debug       Enable D-Bus debugging\n"
-		"\t-K, --kdbus            Setup Kernel D-Bus\n"
 		"\t-i, --interfaces       Interfaces to manage\n"
 		"\t-I, --nointerfaces     Interfaces to ignore\n"
 		"\t-h, --help             Show help options\n");
 }
 
 static const struct option main_options[] = {
-	{ "kdbus",        no_argument,       NULL, 'K' },
 	{ "dbus-debug",   no_argument,       NULL, 'B' },
 	{ "version",      no_argument,       NULL, 'v' },
 	{ "interfaces",   required_argument, NULL, 'i' },
@@ -131,7 +129,6 @@ static void nl80211_vanished(void *user_data)
 
 int main(int argc, char *argv[])
 {
-	bool enable_kdbus = false;
 	bool enable_dbus_debug = false;
 	struct l_signal *signal;
 	sigset_t mask;
@@ -142,14 +139,11 @@ int main(int argc, char *argv[])
 	for (;;) {
 		int opt;
 
-		opt = getopt_long(argc, argv, "KBi:I:vh", main_options, NULL);
+		opt = getopt_long(argc, argv, "Bi:I:vh", main_options, NULL);
 		if (opt < 0)
 			break;
 
 		switch (opt) {
-		case 'K':
-			enable_kdbus = true;
-			break;
 		case 'B':
 			enable_dbus_debug = true;
 			break;
@@ -193,7 +187,7 @@ int main(int argc, char *argv[])
 
 	l_info("Wireless daemon version %s", VERSION);
 
-	if (!dbus_init(enable_dbus_debug, enable_kdbus)) {
+	if (!dbus_init(enable_dbus_debug)) {
 		exit_status = EXIT_FAILURE;
 		goto done;
 	}