NAME

       ioctl_console - ioctls for console terminal and virtual consoles

SYNOPSIS

       #include <sys/ioctl.h>

       int ioctl(int fd, unsigned long op, ...);

DESCRIPTION

       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)
              See 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)
              See ioctl_vt(2).

RETURN VALUE

       On success, 0 is returned (except where indicated).  On failure, -1 is returned, and errno
       is set to indicate the error.

STANDARDS

       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.)

       Very  often, ioctls are introduced for communication between the kernel and one particular
       well-known program (fdisk, hdparm, setserial, tunelp, loadkeys, selection, setfont, etc.),
       and their behavior will be changed when required by this particular program.

SEE ALSO

       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)