1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)getsockname.2 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD: src/lib/libc/sys/getsockname.2,v 1.9.2.8 2001/12/14 18:34:00 ru Exp $ 34.\" $DragonFly: src/lib/libc/sys/getsockname.2,v 1.4 2006/04/08 08:17:06 swildner Exp $ 35.\" 36.Dd June 4, 1993 37.Dt GETSOCKNAME 2 38.Os 39.Sh NAME 40.Nm getsockname 41.Nd get socket name 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.In sys/types.h 46.In sys/socket.h 47.Ft int 48.Fn getsockname "int s" "struct sockaddr *name" "socklen_t *namelen" 49.Sh DESCRIPTION 50.Fn Getsockname 51returns the current 52.Fa name 53for the specified socket. The 54.Fa namelen 55parameter should be initialized to indicate 56the amount of space pointed to by 57.Fa name . 58On return it contains the actual size of the name 59returned (in bytes). 60.Sh RETURN VALUES 61.Rv -std getsockname 62.Sh ERRORS 63The call succeeds unless: 64.Bl -tag -width Er 65.It Bq Er EBADF 66The argument 67.Fa s 68is not a valid descriptor. 69.It Bq Er ECONNRESET 70The connection has been reset by the peer. 71.It Bq Er ENOTSOCK 72The argument 73.Fa s 74is a file, not a socket. 75.It Bq Er ENOBUFS 76Insufficient resources were available in the system 77to perform the operation. 78.It Bq Er EFAULT 79The 80.Fa name 81parameter points to memory not in a valid part of the 82process address space. 83.El 84.Sh SEE ALSO 85.Xr bind 2 , 86.Xr getpeername 2 , 87.Xr socket 2 88.Sh HISTORY 89The 90.Fn getsockname 91function call appeared in 92.Bx 4.2 . 93.Sh BUGS 94Names bound to sockets in the UNIX domain are inaccessible; 95.Nm 96returns a zero length name. 97