'\" te .\" Copyright (c) 1992, X/Open Company Limited All Rights Reserved Portions Copyright (c) 1998, Sun Microsystems, Inc. All Rights Reserved .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at .\" http://www.opengroup.org/bookstore/. .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions 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.opengroup.org/unix/online.html. .\" This notice shall appear on any product containing this material. .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License. .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH getpeername 3XNET "10 Jun 2002" "SunOS 5.11" "X/Open Networking Services Library Functions" .SH NAME getpeername \- get the name of the peer socket .SH SYNOPSIS .LP .nf \fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lxnet\fR [ \fIlibrary\fR ... ] #include \fBint\fR \fBgetpeername\fR(\fBint\fR \fIsocket\fR, \fBstruct sockaddr *restrict\fR \fIaddress\fR, \fBsocklen_t *restrict\fR \fIaddress_len\fR); .fi .SH DESCRIPTION .sp .LP The \fBgetpeername()\fR function retrieves the peer address of the specified socket, stores this address in the \fBsockaddr\fR structure pointed to by the \fIaddress\fR argument, and stores the length of this address in the object pointed to by the \fIaddress_len\fR argument. .sp .LP If the actual length of the address is greater than the length of the supplied \fBsockaddr\fR structure, the stored address will be truncated. .sp .LP If the protocol permits connections by unbound clients, and the peer is not bound, then the value stored in the object pointed to by \fIaddress\fR is unspecified. .SH RETURN VALUES .sp .LP Upon successful completion, 0 is returned. Otherwise, \(mi1 is returned and \fBerrno\fR is set to indicate the error. .SH ERRORS .sp .LP The \fBgetpeername()\fR function will fail if: .sp .ne 2 .mk .na \fB\fBEBADF\fR\fR .ad .RS 14n .rt The \fIsocket\fR argument is not a valid file descriptor. .RE .sp .ne 2 .mk .na \fB\fBEFAULT\fR\fR .ad .RS 14n .rt The \fIaddress\fR or \fIaddress_len\fR parameter can not be accessed or written. .RE .sp .ne 2 .mk .na \fB\fBEINVAL\fR\fR .ad .RS 14n .rt The socket has been shut down. .RE .sp .ne 2 .mk .na \fB\fBENOTCONN\fR\fR .ad .RS 14n .rt The socket is not connected or otherwise has not had the peer prespecified. .RE .sp .ne 2 .mk .na \fB\fBENOTSOCK\fR\fR .ad .RS 14n .rt The \fIsocket\fR argument does not refer to a socket. .RE .sp .ne 2 .mk .na \fB\fBEOPNOTSUPP\fR\fR .ad .RS 14n .rt The operation is not supported for the socket protocol. .RE .sp .LP The \fBgetpeername()\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 complete the call. .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 \fBaccept\fR(3XNET), \fBbind\fR(3XNET), \fBgetsockname\fR(3XNET), \fBsocket\fR(3XNET), \fBattributes\fR(5), \fBstandards\fR(5)