$NetBSD: pud.4,v 1.4 2011/02/01 18:08:38 pooka Exp $
Copyright (c) 2007 Antti Kantee.
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.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.Dd November 21, 2007 .Dt PUD 4 .Os .Sh NAME .Nm pud .Nd Pass-to-Userspace Device .Sh SYNOPSIS .Cd "pseudo-device pud" .Cd "pseudo-device putter" .Sh DESCRIPTION The .Nm driver enables the implementation of block and character device drivers as userspace daemons. The daemons register the device major number they wish to handle. Registering a character device is mandatory, supporting the block device interface for same major device is optional. The major number must be available, i.e. another driver must not be registered to handle the operation. After successful registration the userspace daemon is supposed to handle the driver methods the kernel passes down to it. .Sh SEE ALSO .Xr puffs 4 , .Xr putter 9 .Sh BUGS This document is in a hit-in-the-head style obviously not even near complete.
Copyright (c) 2007 Antti Kantee.
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.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.Dd November 21, 2007 .Dt PUD 4 .Os .Sh NAME .Nm pud .Nd Pass-to-Userspace Device .Sh SYNOPSIS .Cd "pseudo-device pud" .Cd "pseudo-device putter" .Sh DESCRIPTION The .Nm driver enables the implementation of block and character device drivers as userspace daemons. The daemons register the device major number they wish to handle. Registering a character device is mandatory, supporting the block device interface for same major device is optional. The major number must be available, i.e. another driver must not be registered to handle the operation. After successful registration the userspace daemon is supposed to handle the driver methods the kernel passes down to it. .Sh SEE ALSO .Xr puffs 4 , .Xr putter 9 .Sh BUGS This document is in a hit-in-the-head style obviously not even near complete.
p The subsystem lacks a puffs-style library that servers can be written against.
Indexes created Mon Sep 22 05:09:51 GMT 2025