This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
The shutdown() function shall cause all or part of a full-duplex
connection on the socket associated with the file descriptor socket
to be shut down.
The shutdown() function takes the following arguments:
socket Specifies the file descriptor of the socket.
how Specifies the type of shutdown. The values are as
SHUT_RD Disables further receive operations.
SHUT_WR Disables further send operations.
SHUT_RDWR Disables further send and receive operations.
The shutdown() function disables subsequent send and/or receive
operations on a socket, depending on the value of the how argument.
The shutdown() function shall fail if:
EBADF The socket argument is not a valid file descriptor.
EINVAL The how argument is invalid.
The socket is not connected.
The socket argument does not refer to a socket.
The shutdown() function may fail if:
Insufficient resources were available in the system to perform
The following sections are informative.
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) In the event of any discrepancy between this version 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.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the
source files to man page format. To report such errors, see
IEEE/The Open Group 2013 SHUTDOWN(3P)