SCTL_TTY_SET_ECHO

kernel::device::char::tty::tty_ctl

Constant SCTL_TTY_SET_ECHO 

Source 
pub const SCTL_TTY_SET_ECHO: u32 = 0x5354_0001;
Expand description

Magic ‘ST’ (0x53, 0x54) followed by sequential IDs to avoid collisions.