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.\" Copyright (c) 1983, 1991 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Id: shutdown.2,v 1.1.1.1 1999/03/21 22:52:23 freitag Exp $
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.\"
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.\" Modified Sat Jul 24 09:57:55 1993 by Rik Faith <faith@cs.unc.edu>
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.\" Modified Tue Oct 22 22:04:51 1996 by Eric S. Raymond <esr@thyrsus.com>
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.\" Modified 1998 by Andi Kleen
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.\"
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2007-05-18 09:55:10 +00:00
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.TH SHUTDOWN 2 1993-07-24 "Linux" "Linux Programmer's Manual"
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.SH NAME
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shutdown \- shut down part of a full-duplex connection
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.SH SYNOPSIS
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.B #include <sys/socket.h>
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.sp
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.BI "int shutdown(int " s ", int " how );
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.SH DESCRIPTION
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The
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2005-10-19 06:54:38 +00:00
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.BR shutdown ()
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call causes all or part of a full-duplex connection on the socket
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associated with
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.I s
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2007-04-12 22:42:49 +00:00
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to be shut down.
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If
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.I how
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is
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.BR SHUT_RD ,
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further receptions will be disallowed.
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If
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.I how
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is
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.BR SHUT_WR ,
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further transmissions will be disallowed.
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If
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.I how
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is
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.BR SHUT_RDWR ,
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further receptions and transmissions will be disallowed.
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.SH "RETURN VALUE"
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On success, zero is returned.
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On error, \-1 is returned, and
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.I errno
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is set appropriately.
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.SH ERRORS
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.TP
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.B EBADF
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.I s
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is not a valid descriptor.
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.TP
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.B ENOTCONN
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The specified socket is not connected.
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.TP
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.B ENOTSOCK
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.I s
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is a file, not a socket.
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.SH "CONFORMING TO"
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POSIX.1-2001, 4.4BSD (the
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.BR shutdown ()
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function call first appeared in 4.2BSD).
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.SH NOTES
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The constants
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.BR SHUT_RD ,
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.BR SHUT_WR ,
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.B SHUT_RDWR
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have the value 0, 1, 2,
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respectively, and are defined in
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.I <sys/socket.h>
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since glibc-2.1.91.
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.SH "SEE ALSO"
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.BR connect (2),
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.BR socket (2)
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