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ioctl_tty(2) — Linux manual page

ioctl_tty(2)               System Calls Manualioctl_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(intfd, intop, ...);

DESCRIPTION        top

       Theioctl(2) call for terminals and serial ports accepts many       possible operation arguments.  Most require a third argument, of       varying type, here calledargp orarg.       Use ofioctl() makes for nonportable programs.  Use the POSIX       interface described intermios(3) whenever possible.Get and set terminal attributesTCGETS(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 structureTIOCGLCKTRMIOS(2const)TIOCSLCKTRMIOS(2const)Get and set window sizeTIOCGWINSZ(2const)TIOCSWINSZ(2const)Sending a breakTCSBRK(2const)TCSBRKP(2const)TIOCSBRK(2const)TIOCCBRK(2const)Software flow controlTCXONC(2const)Buffer count and flushingFIONREAD(2const)TIOCINQ(2const)TIOCOUTQ(2const)TCFLSH(2const)TIOCSERGETLSR(2const)Faking inputTIOCSTI(2const)Redirecting console outputTIOCCONS(2const)Controlling terminalTIOCSCTTY(2const)TIOCNOTTY(2const)Process group and session IDTIOCGPGRP(2const)TIOCSPGRP(2const)TIOCGSID(2const)Exclusive modeTIOCEXCL(2const)TIOCGEXCL(2const)TIOCNXCL(2const)Line disciplineTIOCGETD(2const)TIOCSETD(2const)Pseudoterminal ioctlsTIOCPKT(2const)TIOCGPKT(2const)TIOCSPTLCK(2const)TIOCGPTLCK(2const)TIOCGPTPEER(2const)Modem controlTIOCMGET(2const)TIOCMSET(2const)TIOCMBIC(2const)TIOCMBIS(2const)TIOCMIWAIT(2const)TIOCGICOUNT(2const)Marking a line as localTIOCGSOFTCAR(2const)TIOCSSOFTCAR(2const)Linux-specific       For theTIOCLINUX(2const) ioctl, seeioctl_console(2).Kernel debuggingTIOCTTYGSTRUCT(2const)

RETURN VALUE        top

       On success, 0 is returned.  On error, -1 is returned, anderrno 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 theman-pages (Linux kernel and C library       user-space interface documentation) project.  Information about       the project can be found at        ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report       for this manual page, see       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.       This page was obtained from the tarball man-pages-6.15.tar.gz       fetched from       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on       2025-08-11.  If you discover any rendering problems in this HTML       version of the page, or you believe there is a better or more up-       to-date source for the page, or you have corrections or       improvements to the information in this COLOPHON (which isnot       part of the original manual page), send a mail to       man-pages@man7.orgLinux man-pages 6.15            2025-05-17ioctl_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)

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