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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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ioctl_tty(2) System Calls Manual ioctl_tty(2)
ioctl_tty - ioctls for terminals and serial lines
Standard C library (libc, -lc)
#include <asm/termbits.h> /* Definition of constants */
#include <sys/ioctl.h>
int ioctl(int fd, int op, ...);
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)
On success, 0 is returned. On error, -1 is returned, and errno is
set to indicate the error.
ioctl(2), ldattach(8), ioctl_console(2), termios(3), pty(7)
This page is part of the man-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 is not
part of the original manual page), send a mail to
[email protected]
Linux man-pages 6.15 2025-05-17 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)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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