cfmakeraw(3)               Library Functions Manual               cfmakeraw(3)

NAME
       cfmakeraw - set terminal raw mode

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #define _DEFAULT_SOURCE  /* See feature_test_macros(7) */
       #include <termios.h>

       void cfmakeraw(struct termios *termios_p);

DESCRIPTION
       cfmakeraw() sets the terminal to something like the "raw" mode of the
       old Version 7 terminal driver: input is available character by
       character, echoing is disabled, and all special processing of terminal
       input and output characters is disabled.

       The terminal attributes are set as follows:

           termios_p->c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
                           | INLCR | IGNCR | ICRNL | IXON);
           termios_p->c_oflag &= ~OPOST;
           termios_p->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
           termios_p->c_cflag &= ~(CSIZE | PARENB);
           termios_p->c_cflag |= CS8;

RETURN VALUE
       0      on success.

       -1     on failure and set errno to indicate the error.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |cfmakeraw ()                                | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       BSD.

HISTORY
       BSD.

SEE ALSO
       termios(3type), termios(7)

Linux man-pages 6.19              2026-07-02                      cfmakeraw(3)