1 .\" Copyright (c) 1983, 1991 The Regents of the University of California.
2 .\" All rights reserved.
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34 .\" $Id: shutdown.2,v 1.1.1.1 1999/03/21 22:52:23 freitag Exp $
36 .\" Modified Sat Jul 24 09:57:55 1993 by Rik Faith <faith@cs.unc.edu>
37 .\" Modified Tue Oct 22 22:04:51 1996 by Eric S. Raymond <esr@thyrsus.com>
38 .\" Modified 1998 by Andi Kleen
40 .TH SHUTDOWN 2 2012-09-06 "Linux" "Linux Programmer's Manual"
42 shutdown \- shut down part of a full-duplex connection
44 .B #include <sys/socket.h>
46 .BI "int shutdown(int " sockfd ", int " how );
50 call causes all or part of a full-duplex connection on the socket
58 further receptions will be disallowed.
63 further transmissions will be disallowed.
68 further receptions and transmissions will be disallowed.
70 On success, zero is returned.
71 On error, \-1 is returned, and
78 is not a valid descriptor.
81 An invalid value was specified in
86 The specified socket is not connected.
90 is a file, not a socket.
92 POSIX.1-2001, 4.4BSD (the
94 function call first appeared in 4.2BSD).
100 have the value 0, 1, 2,
101 respectively, and are defined in
105 As currently implemented,
106 checks for the validity of
108 are done in domain-specific code, and not all domains perform these checks.
110 .\" https://bugzilla.kernel.org/show_bug.cgi?id=47111
111 Most notably, UNIX domain sockets simply ignore invalid values;
112 this may change in the future.
118 This page is part of release 3.68 of the Linux
121 A description of the project,
122 information about reporting bugs,
123 and the latest version of this page,
125 \%http://www.kernel.org/doc/man\-pages/.