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.TH shutdown 3XNET "10 Jun 2002" "SunOS 5.11" "X/Open Networking Services Library Functions"
.SH NAME
shutdown \- shut down socket send and receive operations
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lxnet\fR [ \fIlibrary\fR ... ]
#include <sys/socket.h> 

\fBint\fR \fBshutdown\fR(\fBint\fR \fIsocket\fR, \fBint\fR \fIhow\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBshutdown()\fR function disables subsequent \fBsend()\fR and
\fBreceive()\fR operations on a socket, depending on the value of the \fIhow\fR
argument.
.SH PARAMETERS
.sp
.ne 2
.mk
.na
\fB\fIhow\fR\fR
.ad
.RS 10n
.rt  
Specifies the type of shutdown.  The values are as follows:
.sp
.ne 2
.mk
.na
\fB\fBSHUT_RD\fR\fR
.ad
.RS 13n
.rt  
Disables further receive operations.
.RE

.sp
.ne 2
.mk
.na
\fB\fBSHUT_WR\fR\fR
.ad
.RS 13n
.rt  
Disables further send operations.
.RE

.sp
.ne 2
.mk
.na
\fB\fBSHUT_RDWR\fR\fR
.ad
.RS 13n
.rt  
Disables further send and receive operations.
.RE

.RE

.sp
.ne 2
.mk
.na
\fB\fIsocket\fR\fR
.ad
.RS 10n
.rt  
Specifies the file descriptor of the socket.
.RE

.SH RETURN VALUES
.sp
.LP
Upon successful completion, \fBshutdown()\fR returns 0.  Otherwise, \(mi1 is
returned and \fBerrno\fR is set to indicate the error.
.SH ERRORS
.sp
.LP
The \fBshutdown()\fR function will fail if:
.sp
.ne 2
.mk
.na
\fB\fBEBADF\fR\fR
.ad
.RS 12n
.rt  
The \fIsocket\fR argument is not a valid file descriptor.
.RE

.sp
.ne 2
.mk
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 12n
.rt  
The \fIhow\fR argument is invalid.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOTCONN\fR\fR
.ad
.RS 12n
.rt  
The socket is not connected.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOTSOCK\fR\fR
.ad
.RS 12n
.rt  
The \fIsocket\fR argument does not refer to a socket.
.RE

.sp
.LP
The \fBshutdown()\fR function may fail if:
.sp
.ne 2
.mk
.na
\fB\fBENOBUFS\fR\fR
.ad
.RS 11n
.rt  
Insufficient resources were available in the system to perform the operation.
.RE

.sp
.ne 2
.mk
.na
\fB\fBENOSR\fR\fR
.ad
.RS 11n
.rt  
There were insufficient STREAMS resources available for the operation to
complete.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityStandard
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBgetsockopt\fR(3XNET), \fBrecv\fR(3XNET), \fBrecvfrom\fR(3XNET),
\fBrecvmsg\fR(3XNET), \fBselect\fR(3C), \fBsend\fR(3XNET), \fBsendto\fR(3XNET),
\fBsetsockopt\fR(3XNET), \fBsocket\fR(3XNET), \fBattributes\fR(5),
\fBstandards\fR(5)