sdk/dart/zircon/SizedVmo/SizedVmo.fromFile.md

# SizedVmo.fromFile constructor







SizedVmo.fromFile(String path)


<p>Uses fdio_get_vmo_clone() to get a VMO for the file at <code>path</code> in the
current Isolate's namespace.</p>
<p>The returned Vmo is read-only.</p>



## Implementation

```dart
factory SizedVmo.fromFile(String path) {
  FromFileResult r = System.vmoFromFile(path);
  if (r.status != ZX.OK) {
    throw ZxStatusException(r.status, getStringForStatus(r.status));
  }
  return SizedVmo(r.handle, r.numBytes);
}
```