TCGETSID(3P)                                        POSIX Programmer's Manual                                       TCGETSID(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

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,  Copy-
       right (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.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                  TCGETSID(3P)