109 lines
3.2 KiB
Groff
109 lines
3.2 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)shutdown.2 8.1 (Berkeley) 6/4/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd February 27, 2001
|
|
.Dt SHUTDOWN 2
|
|
.Os
|
|
.Sh NAME
|
|
.Nm shutdown
|
|
.Nd shut down part of a full-duplex connection
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.Fd #include <sys/types.h>
|
|
.Fd #include <sys/socket.h>
|
|
.Ft int
|
|
.Fn shutdown "int s" "int how"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn shutdown
|
|
call causes all or part of a full-duplex connection on
|
|
the socket associated with the file descriptor
|
|
.Fa s
|
|
to be shut down.
|
|
The
|
|
.Fa how
|
|
argument specifies the type of shutdown.
|
|
Possible values are:
|
|
.Bl -tag -width SHUT_RDWR
|
|
.It Dv SHUT_RD
|
|
further receives will be disallowed.
|
|
.It Dv SHUT_WR
|
|
further sends will be disallowed.
|
|
.It Dv SHUT_RDWR
|
|
further sends and receives will be disallowed.
|
|
.El
|
|
.Sh RETURN VALUES
|
|
.Rv -std shutdown .
|
|
.Sh ERRORS
|
|
The
|
|
.Fn shutdown
|
|
call fails if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EBADF
|
|
The
|
|
.Fa s
|
|
argument is not a valid file descriptor.
|
|
.It Bq Er EINVAL
|
|
The
|
|
.Fa how
|
|
argument is invalid.
|
|
.It Bq Er ENOTCONN
|
|
The socket is not connected.
|
|
.It Bq Er ENOTSOCK
|
|
The
|
|
.Fa s
|
|
argument does not refer to a socket.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr connect 2 ,
|
|
.Xr socket 2
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn shutdown
|
|
function is expected to comply with
|
|
.St -p1003.1g-2000 ,
|
|
when finalized.
|
|
.Sh HISTORY
|
|
The
|
|
.Fn shutdown
|
|
function call appeared in
|
|
.Bx 4.2 .
|
|
The
|
|
.Dv SHUT_RD , SHUT_WR ,
|
|
and
|
|
.Dv SHUT_RDWR
|
|
constants appeared in
|
|
.St -p1003.1g-2000 .
|