1TCGETSID(3P)               POSIX Programmer's Manual              TCGETSID(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       tcgetsid - get the process group ID for the session leader for the con‐
13       trolling terminal
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SYNOPSIS

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

22       The  tcgetsid()  function shall obtain the process group ID of the ses‐
23       sion for which the terminal specified by fildes is the controlling ter‐
24       minal.
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RETURN VALUE

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

32       The tcgetsid() function shall fail if:
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34       EBADF  The fildes argument is not a valid file descriptor.
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36       ENOTTY The calling process does not have a controlling terminal, or the
37              file is not the controlling terminal.
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40       The following sections are informative.
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EXAMPLES

43       None.
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APPLICATION USAGE

46       None.
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RATIONALE

49       None.
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FUTURE DIRECTIONS

52       None.
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SEE ALSO

55       The Base Definitions volume of IEEE Std 1003.1-2001, <termios.h>
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58       Portions of this text are reprinted and reproduced in  electronic  form
59       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
60       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
61       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
62       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
63       event of any discrepancy between this version and the original IEEE and
64       The Open Group Standard, the original IEEE and The Open Group  Standard
65       is  the  referee document. The original Standard can be obtained online
66       at http://www.opengroup.org/unix/online.html .
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70IEEE/The Open Group                  2003                         TCGETSID(3P)
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