GetFilesDir() from NDK?

I have custom helper class for accessing various paths, for the data directory I do this:

1. Read /proc/self/cmdline or /proc/**MyPID**/cmdline
2. Append the results from #1 to /data/data/

Example results:

/data/data/com.yourcompany.yourproduct/

If you are using NativeActivity then you have access from native code to an ANativeActivity instance (see <ndk_root>/platforms/android-9/arch-arm/usr/include/android/native_activity.h) which has internalDataPath and externalDataPath members.