86 lines
2.9 KiB
Groff
86 lines
2.9 KiB
Groff
.\" Copyright (c) 2000 Mark Newton
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd March 17, 2008
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.Dt STREAMS 4 i386
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.Os
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.Sh NAME
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.Nm streams
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.Nd System V STREAMS networking ABI support
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.Sh SYNOPSIS
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To compile support for this ABI into the kernel,
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place the following line in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device streams"
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.Ed
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.Pp
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Alternatively, to load the ABI as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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streams_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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module provides limited
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System V Release 4 STREAMS interprocess communication ABI
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(application binary interface) compatibility
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for userland applications.
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.Pp
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Internally,
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.Nm
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provides STREAMS handles by using socket creation kernel routines, and
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adding state-tracking information to the socket to permit manipulation
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by STREAMS emulation code in
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.Xr svr4 4 .
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Hence, opening a stream device produces a result similar to what would be
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obtained by calling
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.Xr socket 2 .
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.Pp
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Applications should never use this interface directly: STREAMS
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emulation is only provided as a service to support ABI requirements in
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the SVR4 environment which
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.Xr svr4 4
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needs to present to client binaries.
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.Sh SEE ALSO
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.Xr svr4 4
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.Sh HISTORY
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System V Release 4 ABI support first appeared in
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.Fx 4.0 .
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The ABI was ported from an equivalent facility present in
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.Nx 1.3
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written by Christos Zoulas.
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.Sh BUGS
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This whole interface is a crude hack to produce STREAMS semantics
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through emulation over sockets.
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.Pp
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Programmers who hope to be able to use this interface to provide
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SVR4 STREAMS services to
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.Bx
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applications will be sorely disappointed.
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