x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
SHUTDOWN(2) Linux Programmer's Manual SHUTDOWN(2)
NAME
shutdown - shut down part of a full-duplex connection
SYNOPSIS
#include <sys/socket.h>
int shutdown(int sockfd, int how);
DESCRIPTION
The shutdown() call causes all or part of a full-duplex connection on
the socket associated with sockfd to be shut down. If how is SHUT_RD,
further receptions will be disallowed. If how is SHUT_WR, further
transmissions will be disallowed. If how is SHUT_RDWR, further recep-
tions and transmissions will be disallowed.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is
set appropriately.
ERRORS
EBADF sockfd is not a valid descriptor.
EINVAL An invalid value was specified in how (but see BUGS).
ENOTCONN
The specified socket is not connected.
ENOTSOCK
sockfd is a file, not a socket.
CONFORMING TO
POSIX.1-2001, 4.4BSD (the shutdown() function call first appeared in
4.2BSD).
NOTES
The constants SHUT_RD, SHUT_WR, SHUT_RDWR have the value 0, 1, 2,
respectively, and are defined in <sys/socket.h> since glibc-2.1.91.
BUGS
As currently implemented, checks for the validity of how are done in
domain-specific code, and not all domains perform these checks. Most
notably, UNIX domain sockets simply ignore invalid values; this may
change in the future.
SEE ALSO
connect(2), socket(2), socket(7)
COLOPHON
This page is part of release 3.69 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
http://www.kernel.org/doc/man-pages/.
Linux 2012-09-06 SHUTDOWN(2)
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