ioctl_tty(2) — Linux manual page

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON

ioctl_tty(2)               System Calls Manual              ioctl_tty(2)

NAME         top

       ioctl_tty - ioctls for terminals and serial lines

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <asm/termbits.h>  /* Definition of constants */
       #include <sys/ioctl.h>

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

DESCRIPTION         top

       The ioctl(2) call for terminals and serial ports accepts many
       possible operation arguments.  Most require a third argument, of
       varying type, here called argp or arg.

       Use of ioctl() makes for nonportable programs.  Use the POSIX
       interface described in termios(3) whenever possible.

   Get and set terminal attributes
       TCGETS(2const)
       TCSETS(2const)
       TCSETSW(2const)
       TCSETSF(2const)

       TCGETS(2const)
       TCSETS(2const)
       TCSETSW(2const)
       TCSETSF(2const)

       TCGETS(2const)
       TCSETS(2const)
       TCSETSW(2const)
       TCSETSF(2const)

   Locking the termios structure
       TIOCGLCKTRMIOS(2const)
       TIOCSLCKTRMIOS(2const)

   Get and set window size
       TIOCGWINSZ(2const)
       TIOCSWINSZ(2const)

   Sending a break
       TCSBRK(2const)
       TCSBRKP(2const)
       TIOCSBRK(2const)
       TIOCCBRK(2const)

   Software flow control
       TCXONC(2const)

   Buffer count and flushing
       FIONREAD(2const)
       TIOCINQ(2const)
       TIOCOUTQ(2const)
       TCFLSH(2const)
       TIOCSERGETLSR(2const)

   Faking input
       TIOCSTI(2const)

   Redirecting console output
       TIOCCONS(2const)

   Controlling terminal
       TIOCSCTTY(2const)
       TIOCNOTTY(2const)

   Process group and session ID
       TIOCGPGRP(2const)
       TIOCSPGRP(2const)
       TIOCGSID(2const)

   Exclusive mode
       TIOCEXCL(2const)
       TIOCGEXCL(2const)
       TIOCNXCL(2const)

   Line discipline
       TIOCGETD(2const)
       TIOCSETD(2const)

   Pseudoterminal ioctls
       TIOCPKT(2const)
       TIOCGPKT(2const)

       TIOCSPTLCK(2const)
       TIOCGPTLCK(2const)

       TIOCGPTPEER(2const)

   Modem control
       TIOCMGET(2const)
       TIOCMSET(2const)
       TIOCMBIC(2const)
       TIOCMBIS(2const)

       TIOCMIWAIT(2const)

       TIOCGICOUNT(2const)

   Marking a line as local
       TIOCGSOFTCAR(2const)
       TIOCSSOFTCAR(2const)

   Linux-specific
       For the TIOCLINUX(2const) ioctl, see ioctl_console(2).

   Kernel debugging
       TIOCTTYGSTRUCT(2const)

RETURN VALUE         top

       On success, 0 is returned.  On error, -1 is returned, and errno
       is set to indicate the error.

SEE ALSO         top

       ioctl(2), ldattach(8), ioctl_console(2), termios(3), pty(7)

COLOPHON         top

       This page is part of the man-pages (Linux kernel and C library
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Linux man-pages 6.9.1          2024-06-14                   ioctl_tty(2)

Pages that refer to this page: FIONREAD(2const)ioctl(2)ioctl_console(2)poll(2)TCSBRK(2const)TCSETS(2const)TCXONC(2const)TIOCCONS(2const)TIOCEXCL(2const)TIOCMSET(2const)TIOCPKT(2const)TIOCSCTTY(2const)TIOCSETD(2const)TIOCSLCKTRMIOS(2const)TIOCSPGRP(2const)TIOCSSOFTCAR(2const)TIOCSTI(2const)TIOCTTYGSTRUCT(2const)termios(3)tty(4)pty(7)termio(7)