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.\"     @(#)getsockname.2	8.1 (Berkeley) 6/4/93
.\" $FreeBSD: src/lib/libc/sys/getsockname.2,v 1.9.2.8 2001/12/14 18:34:00 ru Exp $
.\" $DragonFly: src/lib/libc/sys/getsockname.2,v 1.2 2003/06/17 04:26:47 dillon Exp $
.\"
.Dd June 4, 1993
.Dt GETSOCKNAME 2
.Os
.Sh NAME
.Nm getsockname
.Nd get socket name
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sys/types.h
.In sys/socket.h
.Ft int
.Fn getsockname "int s" "struct sockaddr *name" "socklen_t *namelen"
.Sh DESCRIPTION
.Fn Getsockname
returns the current
.Fa name
for the specified socket.  The
.Fa namelen
parameter should be initialized to indicate
the amount of space pointed to by
.Fa name .
On return it contains the actual size of the name
returned (in bytes).
.Sh RETURN VALUES
.Rv -std getsockname
.Sh ERRORS
The call succeeds unless:
.Bl -tag -width Er
.It Bq Er EBADF
The argument
.Fa s
is not a valid descriptor.
.It Bq Er ECONNRESET
The connection has been reset by the peer.
.It Bq Er ENOTSOCK
The argument
.Fa s
is a file, not a socket.
.It Bq Er ENOBUFS
Insufficient resources were available in the system
to perform the operation.
.It Bq Er EFAULT
The
.Fa name
parameter points to memory not in a valid part of the
process address space.
.El
.Sh SEE ALSO
.Xr bind 2 ,
.Xr getpeername 2 ,
.Xr socket 2
.Sh BUGS
Names bound to sockets in the UNIX domain are inaccessible;
.Xr getsockname
returns a zero length name.
.Sh HISTORY
The
.Fn getsockname
function call appeared in
.Bx 4.2 .