ioctl_console(2) System Calls Manual ioctl_console(2) ioctl_console - - (ioctl) #include int ioctl(int fd, unsigned long op, ...); The following Linux-specific ioctl(2) operations are supported for console terminals and virtual consoles. KDGETLED(2const) KDSETLED(2const) KDGKBLED(2const) KDSKBLED(2const) KDGKBTYPE(2const) KDADDIO(2const) KDDELIO(2const) KDENABIO(2const) KDDISABIO(2const) KDSETMODE(2const) KDGETMODE(2const) KDMKTONE(2const) KIOCSOUND(2const) GIO_CMAP(2const) PIO_CMAP(2const) GIO_FONT(2const) GIO_FONTX(2const) PIO_FONT(2const) PIO_FONTX(2const) PIO_FONTRESET(2const) GIO_SCRNMAP(2const) GIO_UNISCRNMAP(2const) PIO_SCRNMAP(2const) PIO_UNISCRNMAP(2const) GIO_UNIMAP(2const) PIO_UNIMAP(2const) PIO_UNIMAPCLR(2const) KDGKBMODE(2const) KDSKBMODE(2const) KDGKBMETA(2const) KDSKBMETA(2const) KDGKBENT(2const) KDSKBENT(2const) KDGKBSENT(2const) KDSKBSENT(2const) KDGKBDIACR(2const) KDGETKEYCODE(2const) KDSETKEYCODE(2const) KDSIGACCEPT(2const) . ioctl_kd(2). TIOCLINUX(2const) VT_OPENQRY(2const) VT_GETMODE(2const) VT_SETMODE(2const) VT_GETSTATE(2const) VT_RELDISP(2const) VT_ACTIVATE(2const) VT_WAITACTIVE(2const) VT_DISALLOCATE(2const) VT_RESIZE(2const) VT_RESIZEX(2const) . ioctl_vt(2). On success, 0 is returned (except where indicated). On failure, -1 is returned, and errno is set to indicate the error. Linux. CAVEATS Do not regard this man page as documentation of the Linux console ioctls. This is provided for the curious only, as an alternative to reading the source. Ioctl's are undocumented Linux internals, liable to be changed without warning. (And indeed, this page more or less describes the situation as of kernel version 1.1.94; there are many minor and not-so-minor differences with earlier versions.) ioctl - (fdisk, hdparm, setserial, tunelp, loadkeys, selection, setfont ..), . ioctl(2), TIOCLINUX(2const), ioctl_kd(2), ioctl_vt(2), dumpkeys(1), kbd_mode(1), loadkeys(1), mknod(1), setleds(1), setmetamode(1), execve(2), fcntl(2), ioctl_tty(2), ioperm(2), termios(3), console_codes(4), mt(4), sd(4), tty(4), ttyS(4), vcs(4), vcsa(4), charsets(7), mapscrn(8), resizecons(8), setfont(8) () Azamat Hackimov , Dmitriy S. Seregin , Yuri Kozlov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () . Linux man-pages 6.18 8 2026 . ioctl_console(2)