[SOLVED] what does prefix "tc" and "cf" in "termios.h" mean?

lesca · 11-12-2010, 10:01 PM

Hello everyone

I am reading the manual of termios, but I can't figure out what does prefix "tc" and "cf" stand for, say tcgetattr(), and cfgetispeed().

All functions in this manual have those prefixs. I even read the header file, termios.h and google for their meanings, but I find no clue.

And... by the way, I find "TCXONC" in the header file. What is that?

Any tips are appreciated.

Thanks

neonsignal · 11-13-2010, 04:45 AM

The 'tc' probably stands for terminal (line) control (or communications). The 'cf' refers to the cflags structure that those particular functions modify.

The TCXONC is used to start and stop the output flow.

lesca · 11-14-2010, 10:38 PM

Ok, I see...

But what is cflag? Does the 'c' mean 'constant' or 'C language'?

Thanks!!

MrCode · 11-14-2010, 10:41 PM

Homework question perhaps? Searching "cflags" on Google gave the Wikipedia article as the first result. Apparently it's a Makefile variable that holds compiler flag options.

EDIT: or perhaps the OP is thinking of something else...?

neonsignal · 11-14-2010, 10:49 PM

It is just 'control', as in terminal control flags.

lesca · 11-16-2010, 07:22 PM

Ah~
It's not homework. I am learning linux programming by myself!

And thanks for all your answers!

EDIT: and unfortunately there is no teacher can answer my questions, they all use windows...