check_file_on_disk

Checks synchronously the file on disk, to know whether the file is externally modified, or has been deleted, and whether the file is read-only.

File doesn't create a [class@Gio.FileMonitor] to track those properties, so this function needs to be called instead. Creating lots of [class@Gio.FileMonitor]'s would take lots of resources.

Since this function is synchronous, it is advised to call it only on local files. See [method@File.is_local].

Parameters: