libbinder: build ParcelFileDescriptor on Trusty
Adds ParcelFileDescriptor.cpp to the Trusty build
which in turn compiles some extra related code from
Parcel.cpp. This code uses fcntl(...O_DUPFD_CLOEXEC...)
to duplicate file descriptors which is not available
on Trusty (or other OSes), so we abstract the relevant
calls to that function in a wrapper in OS.cpp.
Bug: 224644083
Test: m
Test: build on Trusty
Change-Id: I2e0ee517e7c7b55458a6ee6db977985aab4d7c58
diff --git a/libs/binder/OS.h b/libs/binder/OS.h
index e802e9c..d6e1c78 100644
--- a/libs/binder/OS.h
+++ b/libs/binder/OS.h
@@ -28,4 +28,6 @@
status_t getRandomBytes(uint8_t* data, size_t size);
+status_t dupFileDescriptor(int oldFd, int* newFd);
+
} // namespace android