---
title: doLockSpace
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iofirewirecontroller/1456792-dolockspace
---

# doLockSpace

## Declaration

```occ
UInt32 doLockSpace(UInt16 nodeID, IOFWSpeed & speed, FWAddress addr, UInt32 inlen, const UInt32 *newVal, UInt32 & outLen, UInt32 *oldVal, UInt32 extType, IOFWRequestRefCon refcon);
```