NAME
        GetFileSysTask -- Returns the default filesystem for the process (V36)

   SYNOPSIS
        port = GetFileSysTask()
        D0

        struct msgport *getfilesystask(void)

   FUNCTION
        Returns the default filesystem task's port (pr_FileSystemTask) for the
        current process.

   RESULT
        port - The pr_MsgPort of the filesystem, or NULL.

   SEE ALSO
        setfilesystask(), open()