1*2fe8fb19SBen Gras.\" $NetBSD: shutdown.2,v 1.17 2004/05/13 10:20:58 wiz Exp $ 2*2fe8fb19SBen Gras.\" 3*2fe8fb19SBen Gras.\" Copyright (c) 1983, 1991, 1993 4*2fe8fb19SBen Gras.\" The Regents of the University of California. All rights reserved. 5*2fe8fb19SBen Gras.\" 6*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 7*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 8*2fe8fb19SBen Gras.\" are met: 9*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 10*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 11*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 12*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 13*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 14*2fe8fb19SBen Gras.\" 3. Neither the name of the University nor the names of its contributors 15*2fe8fb19SBen Gras.\" may be used to endorse or promote products derived from this software 16*2fe8fb19SBen Gras.\" without specific prior written permission. 17*2fe8fb19SBen Gras.\" 18*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28*2fe8fb19SBen Gras.\" SUCH DAMAGE. 29*2fe8fb19SBen Gras.\" 30*2fe8fb19SBen Gras.\" @(#)shutdown.2 8.1 (Berkeley) 6/4/93 31*2fe8fb19SBen Gras.\" 32*2fe8fb19SBen Gras.Dd August 18, 2002 33*2fe8fb19SBen Gras.Dt SHUTDOWN 2 34*2fe8fb19SBen Gras.Os 35*2fe8fb19SBen Gras.Sh NAME 36*2fe8fb19SBen Gras.Nm shutdown 37*2fe8fb19SBen Gras.Nd shut down part of a full-duplex connection 38*2fe8fb19SBen Gras.Sh LIBRARY 39*2fe8fb19SBen Gras.Lb libc 40*2fe8fb19SBen Gras.Sh SYNOPSIS 41*2fe8fb19SBen Gras.In sys/socket.h 42*2fe8fb19SBen Gras.Ft int 43*2fe8fb19SBen Gras.Fn shutdown "int s" "int how" 44*2fe8fb19SBen Gras.Sh DESCRIPTION 45*2fe8fb19SBen GrasThe 46*2fe8fb19SBen Gras.Fn shutdown 47*2fe8fb19SBen Grascall causes all or part of a full-duplex connection on 48*2fe8fb19SBen Grasthe socket associated with 49*2fe8fb19SBen Gras.Fa s 50*2fe8fb19SBen Grasto be shut down. 51*2fe8fb19SBen GrasThe 52*2fe8fb19SBen Gras.Fa how 53*2fe8fb19SBen Grasargument specifies which part of the connection will be shut down. 54*2fe8fb19SBen GrasPermissible values are: 55*2fe8fb19SBen Gras.Bl -tag -width SHUT_RDWRXX -offset indent 56*2fe8fb19SBen Gras.It SHUT_RD 57*2fe8fb19SBen Grasfurther receives will be disallowed. 58*2fe8fb19SBen Gras.It SHUT_WR 59*2fe8fb19SBen Grasfurther sends will be disallowed. 60*2fe8fb19SBen Gras.It SHUT_RDWR 61*2fe8fb19SBen Grasfurther sends and receives will be disallowed. 62*2fe8fb19SBen Gras.El 63*2fe8fb19SBen Gras.Sh RETURN VALUES 64*2fe8fb19SBen GrasA 0 is returned if the call succeeds, \-1 if it fails. 65*2fe8fb19SBen Gras.Sh ERRORS 66*2fe8fb19SBen GrasThe call succeeds unless: 67*2fe8fb19SBen Gras.Bl -tag -width Er 68*2fe8fb19SBen Gras.It Bq Er EBADF 69*2fe8fb19SBen Gras.Fa s 70*2fe8fb19SBen Grasis not a valid descriptor. 71*2fe8fb19SBen Gras.It Bq Er EINVAL 72*2fe8fb19SBen GrasThe 73*2fe8fb19SBen Gras.Fa how 74*2fe8fb19SBen Grasargument is invalid. 75*2fe8fb19SBen Gras.It Bq Er ENOTCONN 76*2fe8fb19SBen GrasThe specified socket is not connected. 77*2fe8fb19SBen Gras.It Bq Er ENOTSOCK 78*2fe8fb19SBen Gras.Fa s 79*2fe8fb19SBen Grasis a file, not a socket. 80*2fe8fb19SBen Gras.El 81*2fe8fb19SBen Gras.Sh SEE ALSO 82*2fe8fb19SBen Gras.Xr connect 2 , 83*2fe8fb19SBen Gras.Xr socket 2 84*2fe8fb19SBen Gras.Sh HISTORY 85*2fe8fb19SBen GrasThe 86*2fe8fb19SBen Gras.Fn shutdown 87*2fe8fb19SBen Grasfunction call appeared in 88*2fe8fb19SBen Gras.Bx 4.2 . 89*2fe8fb19SBen GrasThe 90*2fe8fb19SBen Gras.Fa how 91*2fe8fb19SBen Grasarguments used to be simply 0, 1, and 2, but now have named values 92*2fe8fb19SBen Grasas specified by 93*2fe8fb19SBen Gras.St -xpg4 . 94