pub unsafe extern "C" fn mdbx_env_copy2fd(
env: *mut MDBX_env,
fd: mdbx_filehandle_t,
flags: MDBX_copy_flags_t,
) -> c_int
pub unsafe extern "C" fn mdbx_env_copy2fd(
env: *mut MDBX_env,
fd: mdbx_filehandle_t,
flags: MDBX_copy_flags_t,
) -> c_int