diff --git a/media/mtp/PosixAsyncIO.h b/media/mtp/PosixAsyncIO.h
new file mode 100644
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+++ b/media/mtp/PosixAsyncIO.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2016 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 _POSIXASYNCIO_H
+#define _POSIXASYNCIO_H
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <time.h>
+#include <thread>
+#include <unistd.h>
+
+/**
+ * Provides a subset of POSIX aio operations.
+ */
+
+struct aiocb {
+    int aio_fildes;
+    void *aio_buf;
+
+    off_t aio_offset;
+    size_t aio_nbytes;
+
+    // Used internally
+    std::thread thread;
+    ssize_t ret;
+    int error;
+
+    ~aiocb();
+};
+
+// Submit a request for IO to be completed
+int aio_read(struct aiocb *);
+int aio_write(struct aiocb *);
+
+// Suspend current thread until given IO is complete, at which point
+// its return value and any errors can be accessed
+// All submitted requests must have a corresponding suspend.
+// aiocb->aio_buf must refer to valid memory until after the suspend call
+int aio_suspend(struct aiocb *[], int, const struct timespec *);
+int aio_error(const struct aiocb *);
+ssize_t aio_return(struct aiocb *);
+
+// Helper method for setting aiocb members
+void aio_prepare(struct aiocb *, void*, size_t, off_t);
+
+#endif // POSIXASYNCIO_H
+