From 3b6cb8f2cfe097a175c6d5665500aa68ad55fb44 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Wed, 22 Jul 2009 20:52:53 +0200
Subject: [PATCH] Handle the RFKILL change events from udev

---
 src/udev.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 87 insertions(+), 27 deletions(-)

diff --git a/src/udev.c b/src/udev.c
index a1b9223..b14b625 100644
--- a/src/udev.c
+++ b/src/udev.c
@@ -71,7 +71,7 @@ static struct connman_device *find_device(int index)
 	return NULL;
 }
 
-static void add_device(struct udev_device *udev_device)
+static void add_net_device(struct udev_device *udev_device)
 {
 	struct udev_list_entry *entry;
 	struct connman_device *device;
@@ -140,7 +140,7 @@ static void add_device(struct udev_device *udev_device)
 	device_list = g_slist_append(device_list, device);
 }
 
-static void remove_device(struct udev_device *udev_device)
+static void remove_net_device(struct udev_device *udev_device)
 {
 	struct udev_list_entry *entry;
 	struct connman_device *device;
@@ -174,6 +174,67 @@ static void remove_device(struct udev_device *udev_device)
 	connman_device_unref(device);
 }
 
+static void phyindex_rfkill(int phyindex, connman_bool_t blocked)
+{
+	GSList *list;
+
+	if (phyindex < 0)
+		return;
+
+	for (list = device_list; list; list = list->next) {
+		struct connman_device *device = list->data;
+
+		if (__connman_device_get_phyindex(device) == phyindex)
+			__connman_device_set_blocked(device, blocked);
+	}
+}
+
+static void change_rfkill_device(struct udev_device *device)
+{
+	struct udev_device *parent;
+	struct udev_list_entry *entry;
+	connman_bool_t blocked;
+	const char *value, *type = NULL;
+	int state = -1;
+
+	entry = udev_device_get_properties_list_entry(device);
+	while (entry) {
+		const char *name = udev_list_entry_get_name(entry);
+
+		if (g_str_has_prefix(name, "RFKILL_STATE") == TRUE) {
+			value = udev_list_entry_get_value(entry);
+			if (value != NULL)
+				state = atoi(value);
+		} else if (g_str_has_prefix(name, "RFKILL_TYPE") == TRUE)
+			type = udev_list_entry_get_value(entry);
+
+		entry = udev_list_entry_get_next(entry);
+	}
+
+	if (type == NULL || state < 0)
+		return;
+
+	if (g_str_equal(type, "wlan") == FALSE)
+		return;
+
+	parent = udev_device_get_parent(device);
+	if (parent == NULL)
+		return;
+
+	value = udev_device_get_sysattr_value(parent, "index");
+	if (value == NULL)
+		return;
+
+	blocked = (state != 1) ? TRUE : FALSE;
+
+	phyindex_rfkill(atoi(value), blocked);
+}
+
+static void add_rfkill_device(struct udev_device *device)
+{
+	change_rfkill_device(device);
+}
+
 static void print_properties(struct udev_device *device, const char *prefix)
 {
 	struct udev_list_entry *entry;
@@ -245,6 +306,7 @@ static void enumerate_devices(struct udev *context)
 		return;
 
 	udev_enumerate_add_match_subsystem(enumerate, "net");
+	udev_enumerate_add_match_subsystem(enumerate, "rfkill");
 
 	udev_enumerate_scan_devices(enumerate);
 
@@ -254,12 +316,20 @@ static void enumerate_devices(struct udev *context)
 		struct udev_device *device;
 
 		device = udev_device_new_from_syspath(context, syspath);
+		if (device != NULL) {
+			const char *subsystem;
 
-		print_device(device, "coldplug");
+			print_device(device, "coldplug");
 
-		add_device(device);
+			subsystem = udev_device_get_subsystem(device);
 
-		udev_device_unref(device);
+			if (g_strcmp0(subsystem, "net") == 0)
+				add_net_device(device);
+			else if (g_strcmp0(subsystem, "rfkill") == 0)
+				add_rfkill_device(device);
+
+			udev_device_unref(device);
+		}
 
 		entry = udev_list_entry_get_next(entry);
 	}
@@ -282,19 +352,24 @@ static gboolean udev_event(GIOChannel *channel,
 	if (subsystem == NULL)
 		goto done;
 
-	if (g_str_equal(subsystem, "net") == FALSE)
-		goto done;
-
 	action = udev_device_get_action(device);
 	if (action == NULL)
 		goto done;
 
 	print_device(device, action);
 
-	if (g_str_equal(action, "add") == TRUE)
-		add_device(device);
-	else if (g_str_equal(action, "remove") == TRUE)
-		remove_device(device);
+	if (g_str_equal(action, "add") == TRUE) {
+		if (g_str_equal(subsystem, "net") == TRUE)
+			add_net_device(device);
+		else if (g_str_equal(subsystem, "rfkill") == TRUE)
+			add_rfkill_device(device);
+	} else if (g_str_equal(action, "remove") == TRUE) {
+		if (g_str_equal(subsystem, "net") == TRUE)
+			remove_net_device(device);
+	} else if (g_str_equal(action, "change") == TRUE) {
+		if (g_str_equal(subsystem, "rfkill") == TRUE)
+			change_rfkill_device(device);
+	}
 
 done:
 	udev_device_unref(device);
@@ -382,21 +457,6 @@ done:
 	return devnode;
 }
 
-static void phyindex_rfkill(int phyindex, connman_bool_t blocked)
-{
-	GSList *list;
-
-	if (phyindex < 0)
-		return;
-
-	for (list = device_list; list; list = list->next) {
-		struct connman_device *device = list->data;
-
-		if (__connman_device_get_phyindex(device) == phyindex)
-			__connman_device_set_blocked(device, blocked);
-	}
-}
-
 void __connman_udev_rfkill(const char *sysname, connman_bool_t blocked)
 {
 	struct udev_device *device, *parent;
-- 
2.7.4