|
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | NOTES | BUGS | SEE ALSO | COLOPHON |
SHUTDOWN(2) Linux Programmer's Manual SHUTDOWN(2)
shutdown - shut down part of a full-duplex connection
#include <sys/socket.h>
int shutdown(int sockfd, int how);
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 receptions and transmissions will be disallowed.
On success, zero is returned. On error, -1 is returned, and errno is
set appropriately.
EBADF sockfd is not a valid file descriptor.
EINVAL An invalid value was specified in how (but see BUGS).
ENOTCONN
The specified socket is not connected.
ENOTSOCK
The file descriptor sockfd does not refer to a socket.
POSIX.1-2001, POSIX.1-2008, 4.4BSD (shutdown() first appeared in
4.2BSD).
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.
Checks for the validity of how are done in domain-specific code, and
before Linux 3.7 not all domains performed these checks. Most
notably, UNIX domain sockets simply ignored invalid values. This
problem was fixed for UNIX domain sockets in Linux 3.7.
connect(2), socket(2), socket(7)
This page is part of release 4.12 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
https://www.kernel.org/doc/man-pages/.
Linux 2016-03-15 SHUTDOWN(2)
Pages that refer to this page: close(2), recv(2), send(2), socket(2), socketcall(2), syscalls(2), systemd.socket(5), signal-safety(7), sock_diag(7), socket(7), lsof(8)