Add the VirtioFsFuseWrite() function, for sending the FUSE_WRITE command to the Virtio Filesystem device. (For avoiding oversized FUSE_WRITE commands, save the maximum write buffer size that is advertized by the FUSE server, in the session init code.) Cc: Ard Biesheuvel <ard.biesheuvel@arm.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Message-Id: <20201216211125.19496-39-lersek@redhat.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>