---
title: getDMAMapLength
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iomemorydescriptor/3553361-getdmamaplength
---

# getDMAMapLength

## Declaration

```occ
uint64_t getDMAMapLength(uint64_t *offset);
```

## See Also

### Getting the Descriptor Information

- [getDirection](kernel/iomemorydescriptor/1812765-getdirection.md)
- [getDirection](kernel/iomemorydescriptor/1441925-getdirection.md)
- [getLength](kernel/iomemorydescriptor/1812776-getlength.md)
- [getLength](kernel/iomemorydescriptor/1442036-getlength.md)
- [GetLength](driverkit/iomemorydescriptor/getlength.md)
- [getFlags](kernel/iomemorydescriptor/2870265-getflags.md)
- [getMetaClass](kernel/iomemorydescriptor/1442096-getmetaclass.md)