Synopsis
#include <termios.h>
int tcgetattr(int fildes, struct termios *termios_p);
Status
Partially implemented
Conformance
IEEE Std 1003.1-2017
Description
tcgetattr() - get the parameters associated with the terminal
The tcgetattr() function shall get the parameters associated with the terminal referred to by fildes and store them
in the termios structure referenced by termios_p. The fildes argument is an open file descriptor associated with a
terminal.
The termios_p argument is a pointer to a termios structure.
The tcgetattr() operation is allowed from any process.
If the terminal device supports different input and output baud rates, the baud rates stored in the termios structure
returned by tcgetattr() shall reflect the actual baud rates, even if they are equal. If differing baud rates are not
supported, the rate returned as the output baud rate shall be the actual baud rate. If the terminal device does not
support split baud rates, the input baud rate stored in the termios structure shall be the output rate (as one of the
symbolic values).
Return value
Upon successful completion, 0 shall be returned. Otherwise, -1 shall be returned and errno set to indicate the
error.
Errors
The tcgetattr() function shall fail if:
-
EBADF- The fildes argument is not a valid file descriptor. -
ENOTTY- The file associated with fildes is not a terminal.
Tests
Untested
Known bugs
None