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.\" $FreeBSD$ 34.\" 35.Dd June 4, 1993 36.Dt GETSOCKNAME 2 37.Os 38.Sh NAME 39.Nm getsockname 40.Nd get socket name 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/types.h 45.In sys/socket.h 46.Ft int 47.Fn getsockname "int s" "struct sockaddr * restrict name" "socklen_t * restrict namelen" 48.Sh DESCRIPTION 49The 50.Fn getsockname 51system call 52returns the current 53.Fa name 54for the specified socket. 55The 56.Fa namelen 57argument should be initialized to indicate 58the amount of space pointed to by 59.Fa name . 60On return it contains the actual size of the name 61returned (in bytes). 62.Sh RETURN VALUES 63.Rv -std getsockname 64.Sh ERRORS 65The call succeeds unless: 66.Bl -tag -width Er 67.It Bq Er EBADF 68The argument 69.Fa s 70is not a valid descriptor. 71.It Bq Er ECONNRESET 72The connection has been reset by the peer. 73.It Bq Er ENOTSOCK 74The argument 75.Fa s 76is a file, not a socket. 77.It Bq Er ENOBUFS 78Insufficient resources were available in the system 79to perform the operation. 80.It Bq Er EFAULT 81The 82.Fa name 83argument points to memory not in a valid part of the 84process address space. 85.El 86.Sh SEE ALSO 87.Xr bind 2 , 88.Xr getpeername 2 , 89.Xr socket 2 90.Sh BUGS 91Names bound to sockets in the UNIX domain are inaccessible; 92.Fn getsockname 93returns a zero length name. 94.Sh HISTORY 95The 96.Fn getsockname 97system call appeared in 98.Bx 4.2 . 99