1.\" Copyright (c) 1983, 1991 The Regents of the University of California. 2.\" 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.\" from: @(#)getsockname.2 6.4 (Berkeley) 3/10/91 33.\" $Id: getsockname.2,v 1.4 1993/11/29 21:25:11 jtc Exp $ 34.\" 35.Dd March 10, 1991 36.Dt GETSOCKNAME 2 37.Os BSD 4.2 38.Sh NAME 39.Nm getsockname 40.Nd get socket name 41.Sh SYNOPSIS 42.Ft int 43.Fn getsockname "int s" "struct sockaddr *name" "int *namelen" 44.Sh DESCRIPTION 45.Fn Getsockname 46returns the current 47.Fa name 48for the specified socket. The 49.Fa namelen 50parameter should be initialized to indicate 51the amount of space pointed to by 52.Fa name . 53On return it contains the actual size of the name 54returned (in bytes). 55.Sh DIAGNOSTICS 56A 0 is returned if the call succeeds, -1 if it fails. 57.Sh ERRORS 58The call succeeds unless: 59.Bl -tag -width Er 60.It Bq Er EBADF 61The argument 62.Fa s 63is not a valid descriptor. 64.It Bq Er ENOTSOCK 65The argument 66.Fa s 67is a file, not a socket. 68.It Bq Er ENOBUFS 69Insufficient resources were available in the system 70to perform the operation. 71.It Bq Er EFAULT 72The 73.Fa name 74parameter points to memory not in a valid part of the 75process address space. 76.El 77.Sh SEE ALSO 78.Xr bind 2 , 79.Xr socket 2 80.Sh BUGS 81Names bound to sockets in the UNIX domain are inaccessible; 82.Xr getsockname 83returns a zero length name. 84.Sh HISTORY 85The 86.Fn getsockname 87function call appeared in 88.Bx 4.2 . 89