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.\" Copyright (c) 1983, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)socketpair.2 6.4 (Berkeley) 3/10/91
.\"
.\" Modified Sat Jul 24 10:49:44 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified Tue Oct 22 22:15:39 1996 by Eric S. Raymond <esr@thyrsus.com>
.\" Translated into Spanish Tue Feb 3 1998 by Gerardo Aburruzaga
. \" Garca <gerardo.aburruzaga@uca.es>
.\"
.TH SOCKETPAIR 2 "3 Febrero 1998" "BSD" "Manual del Programador de Linux"
.SH NOMBRE
socketpair \- crea un par de zcalos conectados
.SH SINOPSIS
.B #include <sys/types.h>
.br
.B #include <sys/socket.h>
.sp
.BI "int socketpair(int " d ", int " tipo ", int " protocolo ", int " sv [2]);
.SH DESCRIPCIN
La llamada a
.N socketpair
crea una pareja sin nombre de zcalos (`sockets', zcalos) en el
dominio especificado por
.IR d ,
del tipo especificado por
.IR tipo ,
y empleando opcionalmente el protocolo especificado por
.IR protocolo .
Los descriptores utilizados para referenciar los nuevos zcalos se
devuelven en
.IR sv [0]
y
.IR sv [1].
Los dos zcalos son indistinguibles.
.SH "VALOR DEVUELTO"
En caso de xito, se devuelve cero. En caso de error, se devuelve \-1
y se pone en
.I errno
un valor apropiado.
.SH ERRORES
.TP 0.8i
.B EMFILE
Demasiados descriptores estn en uso por este proceso.
.TP
.B EAFNOSUPPORT
La familia de direcciones especificada no est admitida en esta mquina.
.TP
.B EPROTONOSUPPORT
El protocolo especificado no est admitido en esta mquina.
.TP
.B EOPNOSUPPORT
El protocolo especificado no soporta la creacin de parejas de zcalos.
.TP
.B EFAULT
La direccin
.I sv
no especifica una parte vlida del espacio de direcciones del proceso.
.SH "CONFORME CON"
4.4BSD (la llamada al sistema
.B socketpair
apareci en 4.2BSD). Generalmente transportable a o desde sistemas
no BSD que admitan clnicos de la capa de zcalos BSD (incluyendo variantes
System V).
.SH "VASE TAMBIN"
.BR read "(2), " write "(2), " pipe (2)
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