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framework: storage: Ensure that filesystems are unmounted before shutdown/reboot

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Signed-off-by: San Mehat <san@google.com>
This commit is contained in:
San Mehat
2010-01-12 07:57:42 -08:00
parent 595f48b2a4
commit 7ebf017658
5 changed files with 113 additions and 3 deletions
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75
services/java/com/android/server/MountService.java
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@ -108,13 +108,86 @@ class MountService extends IMountService.Stub {
BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
Thread thread = new Thread(mListener, MountListener.class.getName());
thread.start();
}
}
};
public void shutdown() {
if (mContext.checkCallingOrSelfPermission(
android.Manifest.permission.SHUTDOWN)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Requires SHUTDOWN permission");
}
Log.d(TAG, "Shutting down");
String state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_SHARED)) {
/*
* If the media is currently shared, unshare it.
* XXX: This is still dangerous!. We should not
* be rebooting at *all* if UMS is enabled, since
* the UMS host could have dirty FAT cache entries
* yet to flush.
*/
try {
setMassStorageEnabled(false);
} catch (Exception e) {
Log.e(TAG, "ums disable failed", e);
}
} else if (state.equals(Environment.MEDIA_CHECKING)) {
/*
* If the media is being checked, then we need to wait for
* it to complete before being able to proceed.
*/
// XXX: @hackbod - Should we disable the ANR timer here?
int retries = 30;
while (state.equals(Environment.MEDIA_CHECKING) && (retries-- >=0)) {
try {
Thread.sleep(1000);
} catch (InterruptedException iex) {
Log.e(TAG, "Interrupted while waiting for media", iex);
break;
}
state = Environment.getExternalStorageState();
}
if (retries == 0) {
Log.e(TAG, "Timed out waiting for media to check");
}
}
if (state.equals(Environment.MEDIA_MOUNTED)) {
/*
* If the media is mounted, then gracefully unmount it.
*/
try {
String m = Environment.getExternalStorageDirectory().toString();
unmountMedia(m);
int retries = 12;
while (!state.equals(Environment.MEDIA_UNMOUNTED) && (retries-- >=0)) {
try {
Thread.sleep(1000);
} catch (InterruptedException iex) {
Log.e(TAG, "Interrupted while waiting for media", iex);
break;
}
state = Environment.getExternalStorageState();
}
if (retries == 0) {
Log.e(TAG, "Timed out waiting for media to unmount");
}
} catch (Exception e) {
Log.e(TAG, "external storage unmount failed", e);
}
}
}
/**
* @return true if USB mass storage support is enabled.
*/