From: Michael Gernoth <michael@gernoth.net>
Date: Fri, 20 May 2011 22:37:55 +0000 (+0200)
Subject: Check if it is safe to load the module on boot
X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/ms2-fixes/commitdiff_plain/08fec0be398954b85575af913448efa8a2e34d19

Check if it is safe to load the module on boot
---

diff --git a/MS2Debounce/src/de/rmdir/ms2debounce/DebounceBootReceiver.java b/MS2Debounce/src/de/rmdir/ms2debounce/DebounceBootReceiver.java
index 2a15ea4..cc072b0 100644
--- a/MS2Debounce/src/de/rmdir/ms2debounce/DebounceBootReceiver.java
+++ b/MS2Debounce/src/de/rmdir/ms2debounce/DebounceBootReceiver.java
@@ -10,7 +10,9 @@ public class DebounceBootReceiver extends BroadcastReceiver{
 		if("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
 			DebounceModuleHelper module = new DebounceModuleHelper(context);
 
-			module.loadModule();
+			if (module.is_safe_to_load()) {
+				module.loadModule();
+			}
 		}
 	}
 }
diff --git a/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java b/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java
index 229f00a..93fd221 100644
--- a/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java
+++ b/MS2Debounce/src/de/rmdir/ms2debounce/DebounceModuleHelper.java
@@ -7,20 +7,25 @@ import java.io.FileReader;
 import java.io.BufferedReader;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 
 public class DebounceModuleHelper
 {
 	private Context ctx;
+	public static final String PREFS_NAME = "DebounceCfg";
 
 	public DebounceModuleHelper(Context context) {
 		ctx = context;
 	}
 
 	public void loadModule() {
-		loadModule(10);
+		SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+
+		int delay = settings.getInt("debounce_delay", 10);
+		loadModule(delay);
 	}
 
-	public void loadModule(int delay) {
+	public synchronized void loadModule(int delay) {
 		File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
 
 		extractModule();
@@ -30,17 +35,31 @@ public class DebounceModuleHelper
 		try {
 			Process insmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/insmod " + debounce_ko + " debounce_delay=" + delay});
 			insmod.waitFor();
-		} catch (Exception e) {}
+		} catch (Exception e) {
+			return;
+		}
+	
+		if (getDelay() <= 0) {
+			return;
+		}
+
+		/* Module was obviously loaded, so it is safe to load on boot */
+		if (!is_safe_to_load()) {
+			SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+			SharedPreferences.Editor editor = settings.edit();
+			editor.putBoolean("safe_to_load", true);
+			editor.commit();
+		}
 	}
 
-	public void unloadModule() {
+	public synchronized void unloadModule() {
 		try {
 			Process rmmod = Runtime.getRuntime().exec(new String[]{"su","-c","/system/bin/rmmod debounce"});
 			rmmod.waitFor();
 		} catch (Exception e) {}
 	}
 
-	public boolean isLoaded() {
+	public synchronized boolean isLoaded() {
 		boolean loaded = false;
 		try {
 			String read;
@@ -61,7 +80,7 @@ public class DebounceModuleHelper
 		return loaded;
 	}
 
-	public int getDelay() {
+	public synchronized int getDelay() {
 		int debounce_delay = -1;
 
 		try {
@@ -79,6 +98,13 @@ public class DebounceModuleHelper
 		return debounce_delay;
 	}
 
+	public synchronized boolean is_safe_to_load() {
+		SharedPreferences settings = ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
+		boolean safe_to_load = settings.getBoolean("safe_to_load", false);
+
+		return safe_to_load;
+	}
+
 	private synchronized void extractModule() {
 		File debounce_ko = new File(ctx.getFilesDir() + "/debounce.ko");
 
diff --git a/MS2Debounce/src/de/rmdir/ms2debounce/MS2Debounce.java b/MS2Debounce/src/de/rmdir/ms2debounce/MS2Debounce.java
index 654cf5a..4f8e703 100644
--- a/MS2Debounce/src/de/rmdir/ms2debounce/MS2Debounce.java
+++ b/MS2Debounce/src/de/rmdir/ms2debounce/MS2Debounce.java
@@ -21,6 +21,6 @@ public class MS2Debounce extends Activity
 		setContentView(R.layout.main);
 
 		TextView text = (TextView)findViewById(R.id.text);
-		text.setText("You will soon be able to set the debounce_delay here.\nModule loaded: " + module.isLoaded() + "\ndebounce_delay: " + module.getDelay() + "ms");
+		text.setText("You will soon be able to set the debounce_delay here.\nModule loaded: " + module.isLoaded() + "\ndebounce_delay: " + module.getDelay() + "ms\nsafe_to_load: " + module.is_safe_to_load());
 	}
 }