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  shall  obtain the process group ID of the session for which the
       terminal specified by fildes is the controlling terminal.

RETURN VALUE

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

ERRORS

       The tcgetsid() function shall fail if:

       EBADF  The fildes argument is not a valid file descriptor.

       ENOTTY The calling process does not have a controlling terminal, or the file  is  not  the
              controlling terminal.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       The Base Definitions volume of IEEE Std 1003.1-2001, <termios.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .