tcgetsid()

Get the process group ID of the session leader for a controlling terminal

Synopsis:

#include <unistd.h>

int tcgetsid( int filedes );

Library:

libc

Description:

The tcgetsid() function returns the process group ID of the session for which the terminal specified by filedes is the controlling terminal.

Returns:

The process group ID associated with the terminal, or -1 if an error occurs (errno is set).

Errors:

EACCES

The filedes argument isn't associated with a controlling terminal.

EBADF

The filedes argument isn't a valid file descriptor.

ENOTTY

The file associated with filedes isn't a terminal.

Classification:

Standard Unix