2.2.7.2 NT_TRANSACT_IOCTL (0x0002)

An SMB_COM_NT_TRANSACT (section 2.2.4.8) command with an NT_TRANSACT_IOCTL subcommand is sent by a client to pass an IOCTL or file system control (FSCTL) command to a server. The NT_TRANSACT_IOCTL subcommand is specified in [MS-CIFS] section 2.2.7.2.