1*8269e767SBrooks Davis.\" Copyright (c) 1983, 1991, 1993 2*8269e767SBrooks Davis.\" The Regents of the University of California. All rights reserved. 3*8269e767SBrooks Davis.\" 4*8269e767SBrooks Davis.\" Redistribution and use in source and binary forms, with or without 5*8269e767SBrooks Davis.\" modification, are permitted provided that the following conditions 6*8269e767SBrooks Davis.\" are met: 7*8269e767SBrooks Davis.\" 1. Redistributions of source code must retain the above copyright 8*8269e767SBrooks Davis.\" notice, this list of conditions and the following disclaimer. 9*8269e767SBrooks Davis.\" 2. Redistributions in binary form must reproduce the above copyright 10*8269e767SBrooks Davis.\" notice, this list of conditions and the following disclaimer in the 11*8269e767SBrooks Davis.\" documentation and/or other materials provided with the distribution. 12*8269e767SBrooks Davis.\" 3. Neither the name of the University nor the names of its contributors 13*8269e767SBrooks Davis.\" may be used to endorse or promote products derived from this software 14*8269e767SBrooks Davis.\" without specific prior written permission. 15*8269e767SBrooks Davis.\" 16*8269e767SBrooks Davis.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17*8269e767SBrooks Davis.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*8269e767SBrooks Davis.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*8269e767SBrooks Davis.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20*8269e767SBrooks Davis.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*8269e767SBrooks Davis.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*8269e767SBrooks Davis.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*8269e767SBrooks Davis.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*8269e767SBrooks Davis.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*8269e767SBrooks Davis.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*8269e767SBrooks Davis.\" SUCH DAMAGE. 27*8269e767SBrooks Davis.\" 28*8269e767SBrooks Davis.Dd June 4, 1993 29*8269e767SBrooks Davis.Dt GETPEERNAME 2 30*8269e767SBrooks Davis.Os 31*8269e767SBrooks Davis.Sh NAME 32*8269e767SBrooks Davis.Nm getpeername 33*8269e767SBrooks Davis.Nd get name of connected peer 34*8269e767SBrooks Davis.Sh LIBRARY 35*8269e767SBrooks Davis.Lb libc 36*8269e767SBrooks Davis.Sh SYNOPSIS 37*8269e767SBrooks Davis.In sys/types.h 38*8269e767SBrooks Davis.In sys/socket.h 39*8269e767SBrooks Davis.Ft int 40*8269e767SBrooks Davis.Fn getpeername "int s" "struct sockaddr * restrict name" "socklen_t * restrict namelen" 41*8269e767SBrooks Davis.Sh DESCRIPTION 42*8269e767SBrooks DavisThe 43*8269e767SBrooks Davis.Fn getpeername 44*8269e767SBrooks Davissystem call 45*8269e767SBrooks Davisreturns the name of the peer connected to 46*8269e767SBrooks Davissocket 47*8269e767SBrooks Davis.Fa s . 48*8269e767SBrooks DavisThe 49*8269e767SBrooks Davis.Fa namelen 50*8269e767SBrooks Davisargument should be initialized to indicate 51*8269e767SBrooks Davisthe amount of space pointed to by 52*8269e767SBrooks Davis.Fa name . 53*8269e767SBrooks DavisOn return it contains the actual size of the name 54*8269e767SBrooks Davisreturned (in bytes). 55*8269e767SBrooks DavisThe name is truncated if the buffer provided is too small. 56*8269e767SBrooks Davis.Sh RETURN VALUES 57*8269e767SBrooks Davis.Rv -std getpeername 58*8269e767SBrooks Davis.Sh ERRORS 59*8269e767SBrooks DavisThe call succeeds unless: 60*8269e767SBrooks Davis.Bl -tag -width Er 61*8269e767SBrooks Davis.It Bq Er EBADF 62*8269e767SBrooks DavisThe argument 63*8269e767SBrooks Davis.Fa s 64*8269e767SBrooks Davisis not a valid descriptor. 65*8269e767SBrooks Davis.It Bq Er ECONNRESET 66*8269e767SBrooks DavisThe connection has been reset by the peer. 67*8269e767SBrooks Davis.It Bq Er EINVAL 68*8269e767SBrooks DavisThe value of the 69*8269e767SBrooks Davis.Fa namelen 70*8269e767SBrooks Davisargument is not valid. 71*8269e767SBrooks Davis.It Bq Er ENOTSOCK 72*8269e767SBrooks DavisThe argument 73*8269e767SBrooks Davis.Fa s 74*8269e767SBrooks Davisis a file, not a socket. 75*8269e767SBrooks Davis.It Bq Er ENOTCONN 76*8269e767SBrooks DavisThe socket is not connected. 77*8269e767SBrooks Davis.It Bq Er ENOBUFS 78*8269e767SBrooks DavisInsufficient resources were available in the system 79*8269e767SBrooks Davisto perform the operation. 80*8269e767SBrooks Davis.It Bq Er EFAULT 81*8269e767SBrooks DavisThe 82*8269e767SBrooks Davis.Fa name 83*8269e767SBrooks Davisargument points to memory not in a valid part of the 84*8269e767SBrooks Davisprocess address space. 85*8269e767SBrooks Davis.El 86*8269e767SBrooks Davis.Sh SEE ALSO 87*8269e767SBrooks Davis.Xr accept 2 , 88*8269e767SBrooks Davis.Xr bind 2 , 89*8269e767SBrooks Davis.Xr getsockname 2 , 90*8269e767SBrooks Davis.Xr socket 2 91*8269e767SBrooks Davis.Sh HISTORY 92*8269e767SBrooks DavisThe 93*8269e767SBrooks Davis.Fn getpeername 94*8269e767SBrooks Davissystem call appeared in 95*8269e767SBrooks Davis.Bx 4.2 . 96