TCGETSID(3) BSD Library Functions Manual TCGETSID(3)
NAME
tcgetsid -- get session ID associated with a controlling terminal
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/types.h>
#include <termios.h>
pid_t
tcgetsid(int fd);
DESCRIPTION
The tcgetsid() function returns the process group ID of the session leader for a controlling terminal specified by fd.
ERRORS
If an error occurs, tcgetsid() returns -1 and the global variable errno is set to indicate the error, as follows:
[EBADF] The fd argument is not a valid file descriptor.
[ENOTTY] The calling process does not have a controlling terminal or the underlying terminal device represented by fd is not the
controlling terminal.
SEE ALSO
getsid(2), setsid(2), tcgetpgrp(3), tcsetsid(3)
STANDARDS
The tcgetsid() function conforms to X/Open Portability Guide Issue 4, Version 2 (``XPG4.2'').
BSD
April 15, 2008 BSD
