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#include <termios.h>
used for terminal special characters
used for terminal baud rates
used for terminal modes
The above types are all unsigned integer types.
The implementation supports one or more programming environments in which the widths of cc_t, speed_t, and tcflag_t are no greater than the width of type long. The names of these programming environments can be obtained using the confstr(3C) function or the getconf(1) utility.
The termios structure is defined and includes the following members:
tcflag_t c_iflag /* input modes */ tcflag_t c_oflag /* output modes */ tcflag_t c_cflag /* control modes */ tcflag_t c_lflag /* local modes */ cc_t c_cc[NCCS] /* control characters */
A definition is provided for: NCCS
size of the array c_cc for control characters
The following subscript names for the array c_cc are defined:
| Subscript Usage Subscript Usage Description |
| Canonical Mode Non-Canonical Mode |
| VEOF EOF character |
| VEOL EOL character |
| VERASE ERASE character |
| VERASE2 ERASE2 character |
| VINTR VINTR INTR character |
| VKILL KILL character |
| VMIN MIN value |
| VQUIT VQUIT QUIT character |
| VSTART VSTART START character |
| VSTOP VSTOP STOP character |
| VSUSP VSUSP SUSP character |
| VTIME TIME value |
| VSTATUS STATUS character |
The subscript values are unique, except that the VMIN and VTIME subscripts can have the same values as the VEOF and VEOL subscripts, respectively.
The header file provides the flags described below.
Signal interrupt on break.
Map CR to NL on input.
Ignore break condition.
Ignore CR.
Ignore characters with parity errors.
Map NL to CR on input.
Enable input parity check.
Strip character.
Enable any character to restart output.
Mark parity errors.
Post-process output.
Map NL to CR-NL on output.
Map CR to NL on output.
No CR output at column 0.
NL performs CR function.
Use fill characters for delay.
Select newline delays: NL0
newline type 0
newline type 1
Select carriage-return delays: CR0
carriage-return delay type 0
carriage-return delay type 1
carriage-return delay type 2
carriage-return delay type 3
Select horizontal-tab delays: TAB0
horizontal-tab delay type 0
horizontal-tab delay type 1
horizontal-tab delay type 2
expand tabs to spaces
Select backspace delays: BS0
backspace-delay type 0
backspace-delay type 1
Select vertical-tab delays: VT0
vertical-tab delay type 0
vertical-tab delay type 1
Select form-feed delays: FF0
form-feed delay type 0
form-feed delay type 1
Hang up
50 baud
75 baud
110 baud
134.5 baud
150 baud
200 baud
300 baud
600 baud
1 200 baud
1 800 baud
2 400 baud
4 800 baud
9 600 baud
19 200 baud
38 400 baud
Character size: CS5
5 bits
6 bits
7 bits
8 bits
Send two stop bits, else one.
Enable receiver.
Parity enable.
Odd parity, else even.
Hang up on last close.
Ignore modem status lines.
The implementation supports the functionality associated with the symbols CS7, CS8, CSTOPB, PARODD, and PARENB.
Enable echo.
Echo erase character as error-correcting backspace.
Echo KILL.
Echo NL.
Canonical input (erase and kill processing).
Enable extended input character processing.
Enable signals.
Disable flush after interrupt or quit.
Send SIGTTOU for background output.
Change attributes immediately.
Change attributes when output has drained.
Change attributes when output has drained; also flush pending input.
Flush pending input.
Flush both pending input and untransmitted output.
Flush untransmitted output.
The following symbolic constants for use with tcflow() are defined: TCIOFF
Transmit a STOP character, intended to suspend input data.
Transmit a START character, intended to restart input data.
Suspend output.
Restart output.
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Standard |