NAME

tcgetsid - get process group ID for session leader for controlling terminal

SYNOPSIS

#include <termios.h>
pid_t tcgetsid(int fildes);

DESCRIPTION

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

RETURN VALUES

Upon successful completion, tcgetsid() returns the process group ID associated with the terminal. Otherwise, a value of (pid_t)−1 is returned and errno is set to indicate the error.

ERRORS

The tcgetsid() function will fail if:

EACCES

The fildes argument is not associated with a controlling terminal.

EBADF

The fildes argument is not a valid file descriptor.

ENOTTY

The file associated with fildes is not a terminal.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Standard
MT-Level	MT-Safe