man-pages/man2/vhangup.2.html
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<H1>VHANGUP</H1>
Section: Linux Programmer's Manual (2)<BR>Updated: 2016-03-15<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
vhangup - virtually hangup the current terminal
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>#include &lt;<A HREF="file:///usr/include/unistd.h">unistd.h</A>&gt;</B>
<P>
<B>int vhangup(void);</B>
<P>
Feature Test Macro Requirements for glibc (see
<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
<P>
<B>vhangup</B>():
<PRE>
Since glibc 2.21:
_DEFAULT_SOURCE
In glibc 2.19 and 2.20:
_DEFAULT_SOURCE || (_XOPEN_SOURCE &amp;&amp; _XOPEN_SOURCE&nbsp;&lt;&nbsp;500)
Up to and including glibc 2.19:
_BSD_SOURCE || (_XOPEN_SOURCE &amp;&amp; _XOPEN_SOURCE&nbsp;&lt;&nbsp;500)
</PRE>
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
<B>vhangup</B>()
simulates a hangup on the current terminal.
This call arranges for other
users to have a ``clean'' terminal at login time.
<A NAME="lbAE">&nbsp;</A>
<H2>RETURN VALUE</H2>
On success, zero is returned.
On error, -1 is returned, and
<I>errno</I>
is set appropriately.
<A NAME="lbAF">&nbsp;</A>
<H2>ERRORS</H2>
<DL COMPACT>
<DT id="1"><B>EPERM</B>
<DD>
The calling process has insufficient privilege to call
<B>vhangup</B>();
the
<B>CAP_SYS_TTY_CONFIG</B>
capability is required.
</DL>
<A NAME="lbAG">&nbsp;</A>
<H2>CONFORMING TO</H2>
This call is Linux-specific, and should not be used in programs
intended to be portable.
<A NAME="lbAH">&nbsp;</A>
<H2>SEE ALSO</H2>
<B><A HREF="/cgi-bin/man/man2html?1+init">init</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?7+capabilities">capabilities</A></B>(7)
<A NAME="lbAI">&nbsp;</A>
<H2>COLOPHON</H2>
This page is part of release 5.05 of the Linux
<I>man-pages</I>
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="2"><A HREF="#lbAB">NAME</A><DD>
<DT id="3"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="4"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="5"><A HREF="#lbAE">RETURN VALUE</A><DD>
<DT id="6"><A HREF="#lbAF">ERRORS</A><DD>
<DT id="7"><A HREF="#lbAG">CONFORMING TO</A><DD>
<DT id="8"><A HREF="#lbAH">SEE ALSO</A><DD>
<DT id="9"><A HREF="#lbAI">COLOPHON</A><DD>
</DL>
<HR>
This document was created by
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Time: 00:05:35 GMT, March 31, 2021
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