vold2: Initial support for Android Secure External Caches
Signed-off-by: San Mehat <san@google.com>
diff --git a/Loop.h b/Loop.h
new file mode 100644
index 0000000..540db8b
--- /dev/null
+++ b/Loop.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LOOP_H
+#define _LOOP_H
+
+#include <unistd.h>
+#include <linux/loop.h>
+
+class Loop {
+public:
+ static const int LOOP_MAX = 8;
+public:
+ static int getNextAvailable(char *buffer, size_t len);
+ static int lookupActive(const char *loopFile, char *buffer, size_t len);
+
+ static int create(const char *loopDevice, const char *loopFile);
+ static int destroyByDevice(const char *loopDevice);
+ static int destroyByFile(const char *loopFile);
+ static int createImageFile(const char *file, size_t sizeMb);
+};
+
+#endif