NAME

tcgetsid — get the process group ID for the session leader for the 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.

SEE ALSO

getsid(2), setpgid(2), setsid(2), tcgetpgrp(3), termios(4)

STANDARDS

The tcgetsid() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).