Function FsRtlPrivateLock 

pub unsafe extern "system" fn FsRtlPrivateLock(
    filelock: *const FILE_LOCK,
    fileobject: *const FILE_OBJECT,
    fileoffset: *const i64,
    length: *const i64,
    processid: PEPROCESS,
    key: u32,
    failimmediately: bool,
    exclusivelock: bool,
    iosb: *mut IO_STATUS_BLOCK,
    irp: *const IRP,
    context: *const c_void,
    alreadysynchronized: bool,
) -> bool