termios(M)

termios(M)
termios -- POSIX.1 general terminal interface

Syntax

#include <sys/termios.h>

Description

This entry discusses the POSIX.1 termios extensions to the termio(M) interface. See termio(M) for a discussion of the general terminal interface supported in the current release.

The following library functions (defined on the termios(S) manual page) should be used instead of ioctl(S):

tcgetattr
Get attributes using a struct termios.

tcsetattr
Set attributes using a struct termios.

cfgetispeed
Get input line speed.

cfsetispeed
Set input line speed.

cfgetospeed
Get output line speed.

cfsetospeed
Set output line speed.

tcdrain
Wait for completion of output transmission.

tcflow
Suspend transmit or receive.

tcflush
Discard pending input and/or output.

tcsendbreak
Send a BREAK character.

tcgetpgrp
Get the ID of the foreground process group.

tcsetpgrp
Set the ID of the foreground process group.
The functions tcgetattr and tcsetattr use the termios structure, defined in the file <sys/termio.h> (included by <sys/termios.h>): 
   #define	NCCS	21
   struct termios {
       tcflag_t      c_iflag;     /* input modes */
       tcflag_t      c_oflag;     /* output modes */
       tcflag_t      c_cflag;     /* control modes */
       tcflag_t      c_lflag;     /* local (line discipline) modes */
       char          c_line;      /* line discipline */
       cc_t          c_cc[NCCS];  /* control chars */
   };
For backward compatibility when the -a ods30 option is used with cc(CP), the following alternative version of the termios structure is also defined: 
   #define	NCCS	13
   struct termios {
       tcflag_t      c_iflag;     /* input modes */
       tcflag_t      c_oflag;     /* output modes */
       tcflag_t      c_cflag;     /* control modes */
       tcflag_t      c_lflag;     /* local (line discipline) modes */
       char          c_line;      /* line discipline */
       cc_t          c_cc[NCCS];  /* control chars */
       char          __c_xxx;     /* used for input baud rate for iBCS2 */
       char          __c_yyy;     /* used for output baud rate for iBCS2 */
   };

Files

/usr/include/sys/termios.h

/usr/include/sys/termio.h
definitions for struct termios and ioctl commands

See also

cfgetispeed(S), cfgetospeed(S), cfsetispeed(S), cfsetospeed(S), ioctl(S), signal(S), stty(C), tcdrain(S), tcflow(S), tcflush(S), tcgetattr(S), tcgetpgrp(S), tcsendbreak(S), tcsetattr(S), tcsetpgrp(S), termio(M), termios(S), tty(M)

Standards conformance

termios is conformant with:

ISO/IEC 9945-1:1990, Information technology - Portable Operating System Interface (POSIX) - Part 1: System Application Program Interface (API) [C Language] (IEEE Std 1003.1-1990);
X/Open CAE Specification, System Interfaces and Headers, Issue 4, 1992.

SCO OpenServer Release 5.0.6 -- 1 August 2000