f9/sdk/dart/package-fuchsia_vfs_vfs/VmoFile/VmoFile.readOnly.md

# VmoFile.readOnly constructor




    *[<Null safety>](https://dart.dev/null-safety)*



VmoFile.readOnly([Vmo](../../zircon/Vmo-class.md) _vmo, [VmoSharingMode](../../package-fuchsia_vfs_vfs/VmoSharingMode.md) _sharingMode)


<p>Constructor for read-only <a href="../../zircon/Vmo-class.md">Vmo</a></p>



## Implementation

```dart
VmoFile.readOnly(this._vmo, this._sharingMode)
    : super.readOnly(() {
        int size = _vmo.getSize().size;
        return _vmo.read(size).bytesAsUint8List();
      });
```