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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11

NAME

13       tcgetsid — get the process group ID for the session leader for the con‐
14       trolling terminal
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SYNOPSIS

17       #include <termios.h>
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19       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 of the session associated with the terminal. Otherwise, a  value  of
29       −1 shall 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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39       The following sections are informative.
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EXAMPLES

42       None.
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APPLICATION USAGE

45       None.
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RATIONALE

48       None.
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FUTURE DIRECTIONS

51       None.
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SEE ALSO

54       The Base Definitions volume of POSIX.1‐2008, <termios.h>
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57       Portions of this text are reprinted and reproduced in  electronic  form
58       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
59       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
60       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
61       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
62       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) 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.unix.org/online.html .
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68       Any  typographical  or  formatting  errors that appear in this page are
69       most likely to have been introduced during the conversion of the source
70       files  to  man page format. To report such errors, see https://www.ker‐
71       nel.org/doc/man-pages/reporting_bugs.html .
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75IEEE/The Open Group                  2013                         TCGETSID(3P)
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