xref: /dragonfly/lib/libc/sys/getpeername.2 (revision dc71b7ab)
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28.\"     @(#)getpeername.2	8.1 (Berkeley) 6/4/93
29.\" $FreeBSD: src/lib/libc/sys/getpeername.2,v 1.9.2.8 2001/12/14 18:34:00 ru Exp $
30.\" $DragonFly: src/lib/libc/sys/getpeername.2,v 1.2 2003/06/17 04:26:47 dillon Exp $
31.\"
32.Dd June 4, 1993
33.Dt GETPEERNAME 2
34.Os
35.Sh NAME
36.Nm getpeername
37.Nd get name of connected peer
38.Sh LIBRARY
39.Lb libc
40.Sh SYNOPSIS
41.In sys/types.h
42.In sys/socket.h
43.Ft int
44.Fn getpeername "int s" "struct sockaddr *name" "socklen_t *namelen"
45.Sh DESCRIPTION
46.Fn Getpeername
47returns the name of the peer connected to
48socket
49.Fa s .
50The
51.Fa namelen
52parameter should be initialized to indicate
53the amount of space pointed to by
54.Fa name .
55On return it contains the actual size of the name
56returned (in bytes).
57The name is truncated if the buffer provided is too small.
58.Sh RETURN VALUES
59.Rv -std getpeername
60.Sh ERRORS
61The call succeeds unless:
62.Bl -tag -width Er
63.It Bq Er EBADF
64The argument
65.Fa s
66is not a valid descriptor.
67.It Bq Er ECONNRESET
68The connection has been reset by the peer.
69.It Bq Er ENOTSOCK
70The argument
71.Fa s
72is a file, not a socket.
73.It Bq Er ENOTCONN
74The socket is not connected.
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 accept 2 ,
86.Xr bind 2 ,
87.Xr getsockname 2 ,
88.Xr socket 2
89.Sh HISTORY
90The
91.Fn getpeername
92function call appeared in
93.Bx 4.2 .
94