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.\"
.\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for
.\" permission to reproduce portions of its copyrighted documentation.
.\" Original documentation from The Open Group can be obtained online at
.\" http://www.opengroup.org/bookstore/.
.\"
.\" The Institute of Electrical and Electronics Engineers and The Open
.\" Group, have given us permission to reprint portions of their
.\" documentation.
.\"
.\" In the following statement, the phrase ``this text'' refers to portions
.\" of the system documentation.
.\"
.\" Portions of this text are reprinted and reproduced in electronic form
.\" in the SunOS Reference Manual, from IEEE Std 1003.1, 2004 Edition,
.\" Standard for Information Technology -- Portable Operating System
.\" Interface (POSIX), The Open Group Base Specifications Issue 6,
.\" Copyright (C) 2001-2004 by the Institute of Electrical and Electronics
.\" Engineers, Inc and The Open Group. In the event of any discrepancy
.\" between these versions and the original IEEE and The Open Group
.\" Standard, the original IEEE and The Open Group Standard is the referee
.\" document. The original Standard can be obtained online at
.\" http://www.opengroup.org/unix/online.html.
.\"
.\" This notice shall appear on any product containing this material.
.\"
.\" The contents of this file are subject to the terms of the
.\" Common Development and Distribution License (the "License").
.\" You may not use this file except in compliance with the License.
.\"
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
.\" or http://www.opensolaris.org/os/licensing.
.\" See the License for the specific language governing permissions
.\" and limitations under the License.
.\"
.\" When distributing Covered Code, include this CDDL HEADER in each
.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
.\" If applicable, add the following below this CDDL HEADER, with the
.\" fields enclosed by brackets "[]" replaced with your own identifying
.\" information: Portions Copyright [yyyy] [name of copyright owner]
.\"
.\"
.\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved.
.\" Portions Copyright (c) 1998, Sun Microsystems, Inc. All Rights Reserved.
.\"
.TH SHUTDOWN 3XNET "Jun 10, 2002"
.SH NAME
shutdown \- shut down socket send and receive operations
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lxnet\fR [ \fIlibrary\fR ... ]
#include <sys/socket.h>
\fBint\fR \fBshutdown\fR(\fBint\fR \fIsocket\fR, \fBint\fR \fIhow\fR);
.fi
.SH DESCRIPTION
.sp
.LP
The \fBshutdown()\fR function disables subsequent \fBsend()\fR and
\fBreceive()\fR operations on a socket, depending on the value of the \fIhow\fR
argument.
.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIhow\fR\fR
.ad
.RS 10n
Specifies the type of shutdown. The values are as follows:
.sp
.ne 2
.na
\fB\fBSHUT_RD\fR\fR
.ad
.RS 13n
Disables further receive operations.
.RE
.sp
.ne 2
.na
\fB\fBSHUT_WR\fR\fR
.ad
.RS 13n
Disables further send operations.
.RE
.sp
.ne 2
.na
\fB\fBSHUT_RDWR\fR\fR
.ad
.RS 13n
Disables further send and receive operations.
.RE
.RE
.sp
.ne 2
.na
\fB\fIsocket\fR\fR
.ad
.RS 10n
Specifies the file descriptor of the socket.
.RE
.SH RETURN VALUES
.sp
.LP
Upon successful completion, \fBshutdown()\fR returns 0. Otherwise, \(mi1 is
returned and \fBerrno\fR is set to indicate the error.
.SH ERRORS
.sp
.LP
The \fBshutdown()\fR function will fail if:
.sp
.ne 2
.na
\fB\fBEBADF\fR\fR
.ad
.RS 12n
The \fIsocket\fR argument is not a valid file descriptor.
.RE
.sp
.ne 2
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 12n
The \fIhow\fR argument is invalid.
.RE
.sp
.ne 2
.na
\fB\fBENOTCONN\fR\fR
.ad
.RS 12n
The socket is not connected.
.RE
.sp
.ne 2
.na
\fB\fBENOTSOCK\fR\fR
.ad
.RS 12n
The \fIsocket\fR argument does not refer to a socket.
.RE
.sp
.LP
The \fBshutdown()\fR function may fail if:
.sp
.ne 2
.na
\fB\fBENOBUFS\fR\fR
.ad
.RS 11n
Insufficient resources were available in the system to perform the operation.
.RE
.sp
.ne 2
.na
\fB\fBENOSR\fR\fR
.ad
.RS 11n
There were insufficient STREAMS resources available for the operation to
complete.
.RE
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp
.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE ATTRIBUTE VALUE
_
Interface Stability Standard
_
MT-Level MT-Safe
.TE
.SH SEE ALSO
.sp
.LP
\fBgetsockopt\fR(3XNET), \fBrecv\fR(3XNET), \fBrecvfrom\fR(3XNET),
\fBrecvmsg\fR(3XNET), \fBselect\fR(3C), \fBsend\fR(3XNET), \fBsendto\fR(3XNET),
\fBsetsockopt\fR(3XNET), \fBsocket\fR(3XNET), \fBattributes\fR(5),
\fBstandards\fR(5)
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