CheckFileForStdio determines whether the file at the path below is one written by tini as a stdio rotator.

FetchStartAndLen returns the virtual file start and length for a given xattrKey (a key that includes the prefix).

GetCurrentOffset gets the current place where the "active" file is being written from for a given stdio file.

NewWatcher returns a fully instantiated instance of Watcher, which will run until Stop is called.

PotentialStdioNames takes a base directory and returns all stderr/stout files for the main container as well as any other sidecar container (which has stdout-containername and stderr-containername).

StdioAttr is the attribute that states this is a stdio, rotatable file.

VirtualFilePrefix is the attribute namespace used to state virtual file mappings.

VirtualFilePrefixWithSeparator is the VirtualFilePrefix with a "." appended (the namespace separator.