Virtualizes the wasi:filesystem interfaces logging all method calls at the TRACE level and 'filesystem' component.

Each call is logged as CALL <interface>#<function> with its arguments, e.g. CALL wasi:filesystem/types#descriptor.stat-at FD=/dir PATH-FLAGS=(symlink-follow) PATH=sub/file.txt.

FD is the path of the descriptor the call is made on, the directory or file a PATH argument is resolved against. A preopen is labeled with its name, e.g. /, and a descriptor opened with open-at with its physical path: . and .. are applied, and symlinks are followed as the host follows them, every component but the last, and the last with symlink-follow. Opening link/sub from /, where link is a symlink to dir, is labeled /dir/sub. The symlinks are read directly from the host, those calls are not logged. PATH arguments are logged as given.