.\" Copyright (C) 2002 Andries Brouwer <aeb@cwi.nl>
.\"
+.\" %%%LICENSE_START(VERBATIM)
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
+.\" %%%LICENSE_END
.\"
-.TH TCGETSID 3 2007-07-26 "GNU" "Linux Programmer's Manual"
+.TH TCGETSID 3 2015-08-08 "GNU" "Linux Programmer's Manual"
.SH NAME
tcgetsid \- get session ID
.SH SYNOPSIS
-.sp
-.B #define _XOPEN_SOURCE 500
+.BR "#define _XOPEN_SOURCE 500" " /* See feature_test_macros(7) */"
.br
-.BR "#include <termios.h>"
-.sp
+.B "#include <termios.h>"
+.PP
.BI "pid_t tcgetsid(int " fd );
.SH DESCRIPTION
The function
.I fd
as controlling terminal.
This terminal must be the controlling terminal of the calling process.
-.SH "RETURN VALUE"
+.SH RETURN VALUE
When
.I fd
refers to the controlling terminal of our session,
The calling process does not have a controlling terminal, or
it has one but it is not described by
.IR fd .
-.SH "CONFORMING TO"
-POSIX.1-2001
+.SH VERSIONS
+.BR tcgetsid ()
+is provided in glibc since version 2.1.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface Attribute Value
+T{
+.BR tcgetsid ()
+T} Thread safety MT-Safe
+.TE
+.SH CONFORMING TO
+POSIX.1-2001, POSIX.1-2008.
.SH NOTES
This function is implemented via the
.B TIOCGSID
.BR ioctl (2),
present
since Linux 2.1.71.
-.SH "SEE ALSO"
+.SH SEE ALSO
.BR getsid (2)