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)

Linux man-pages 6.9.1                              2024-06-14                                   ioctl_console(2)