MountService: Use UsbManager to monitor USB state for mass storage (ecedfdc7) · Commits · e / os / android_frameworks_base

services/java/com/android/server/MountService.java

+19 −60

Original line number	Diff line number	Diff line
		@@ -33,6 +33,7 @@ import android.content.res.ObbInfo;
		import android.content.res.Resources;
		import android.content.res.TypedArray;
		import android.content.res.XmlResourceParser;
		import android.hardware.usb.UsbManager;
		import android.net.Uri;
		import android.os.Binder;
		import android.os.Environment;
		@@ -152,7 +153,6 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		* 600 series - Unsolicited broadcasts.
		*/
		public static final int VolumeStateChange = 605;
		public static final int ShareAvailabilityChange = 620;
		public static final int VolumeDiskInserted = 630;
		public static final int VolumeDiskRemoved = 631;
		public static final int VolumeBadRemoval = 632;
		@@ -167,6 +167,7 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		private String mExternalStoragePath;
		private PackageManagerService mPms;
		private boolean mUmsEnabling;
		private boolean mUmsAvailable = false;
		// Used as a lock for methods that register/unregister listeners.
		final private ArrayList<MountServiceBinderListener> mListeners =
		new ArrayList<MountServiceBinderListener>();
		@@ -525,6 +526,10 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		}
		}
		}.start();
		} else if (action.equals(UsbManager.ACTION_USB_STATE)) {
		boolean available = (intent.getBooleanExtra(UsbManager.USB_CONNECTED, false) &&
		intent.getBooleanExtra(UsbManager.USB_FUNCTION_MASS_STORAGE, false));
		notifyShareAvailabilityChange(available);
		}
		}
		};
		@@ -654,12 +659,6 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		updatePublicVolumeState(mExternalStoragePath, Environment.MEDIA_REMOVED);
		}

		try {
		boolean avail = doGetShareMethodAvailable("ums");
		notifyShareAvailabilityChange("ums", avail);
		} catch (Exception ex) {
		Slog.w(TAG, "Failed to get share availability");
		}
		/*
		* Now that we've done our initialization, release
		* the hounds!
		@@ -694,13 +693,6 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		notifyVolumeStateChange(
		cooked[2], cooked[3], Integer.parseInt(cooked[7]),
		Integer.parseInt(cooked[10]));
		} else if (code == VoldResponseCode.ShareAvailabilityChange) {
		// FMT: NNN Share method <method> now <available\|unavailable>
		boolean avail = false;
		if (cooked[5].equals("available")) {
		avail = true;
		}
		notifyShareAvailabilityChange(cooked[3], avail);
		} else if ((code == VoldResponseCode.VolumeDiskInserted) \|\|
		(code == VoldResponseCode.VolumeDiskRemoved) \|\|
		(code == VoldResponseCode.VolumeBadRemoval)) {
		@@ -835,42 +827,6 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		}
		}

		private boolean doGetShareMethodAvailable(String method) {
		ArrayList<String> rsp;
		try {
		rsp = mConnector.doCommand("share status " + method);
		} catch (NativeDaemonConnectorException ex) {
		Slog.e(TAG, "Failed to determine whether share method " + method + " is available.");
		return false;
		}

		for (String line : rsp) {
		String[] tok = line.split(" ");
		if (tok.length < 3) {
		Slog.e(TAG, "Malformed response to share status " + method);
		return false;
		}

		int code;
		try {
		code = Integer.parseInt(tok[0]);
		} catch (NumberFormatException nfe) {
		Slog.e(TAG, String.format("Error parsing code %s", tok[0]));
		return false;
		}
		if (code == VoldResponseCode.ShareStatusResult) {
		if (tok[2].equals("available"))
		return true;
		return false;
		} else {
		Slog.e(TAG, String.format("Unexpected response code %d", code));
		return false;
		}
		}
		Slog.e(TAG, "Got an empty response");
		return false;
		}

		private int doMountVolume(String path) {
		int rc = StorageResultCode.OperationSucceeded;

		@@ -1018,13 +974,9 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		return false;
		}

		private void notifyShareAvailabilityChange(String method, final boolean avail) {
		if (!method.equals("ums")) {
		Slog.w(TAG, "Ignoring unsupported share method {" + method + "}");
		return;
		}

		private void notifyShareAvailabilityChange(final boolean avail) {
		synchronized (mListeners) {
		mUmsAvailable = avail;
		for (int i = mListeners.size() -1; i >= 0; i--) {
		MountServiceBinderListener bl = mListeners.get(i);
		try {
		@@ -1189,8 +1141,13 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		// XXX: This will go away soon in favor of IMountServiceObserver
		mPms = (PackageManagerService) ServiceManager.getService("package");

		mContext.registerReceiver(mBroadcastReceiver,
		new IntentFilter(Intent.ACTION_BOOT_COMPLETED), null, null);
		IntentFilter filter = new IntentFilter();
		filter.addAction(Intent.ACTION_BOOT_COMPLETED);
		// don't bother monitoring USB if mass storage is not supported on our primary volume
		if (mPrimaryVolume != null && mPrimaryVolume.allowMassStorage()) {
		filter.addAction(UsbManager.ACTION_USB_STATE);
		}
		mContext.registerReceiver(mBroadcastReceiver, filter, null, null);

		mHandlerThread = new HandlerThread("MountService");
		mHandlerThread.start();
		@@ -1323,7 +1280,9 @@ class MountService extends IMountService.Stub implements INativeDaemonConnectorC
		if (getUmsEnabling()) {
		return true;
		}
		return doGetShareMethodAvailable("ums");
		synchronized (mListeners) {
		return mUmsAvailable;
		}
		}

		public void setUsbMassStorageEnabled(boolean enable) {