tcgetattr(3C)

NAME

     tcgetattr - get the parameters associated with the terminal

SYNOPSIS

     #include <termios.h>

     int tcgetattr(int fildes, struct termios *termios_p);

DESCRIPTION

     The tcgetattr() function gets the parameters associated with
     the  terminal  referred  to by fildes and stores them in the
     termios structure (see termio(7I)) 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() reflect the actual baud rates,  even
     if  they  are  equal.  If  differing baud rates are not sup-
     ported, the rate returned as the output  baud  rate  is  the
     actual  baud  rate.  If the terminal device does not support
     split baud rates, the input baud rate stored in the  termios
     structure will be 0.

RETURN VALUES

     Upon successful completion, 0 is returned. Otherwise, -1  is
     returned and errno is set to indicate the error.

ERRORS

     The tcgetattr() function will fail if:

     EBADF The fildes argument is not a valid file descriptor.

     ENOTTY
           The file associated with fildes is not a terminal.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ______________________________________________________________
    |       ATTRIBUTE TYPE        |        ATTRIBUTE VALUE        |
    |_____________________________|_______________________________|
    | MT-Level                    | MT-Safe, and Async-Signal-Safe|
    |_____________________________|_______________________________|

SEE ALSO

     tcsetattr(3C), attributes(5), termio(7I)