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author | mpp <mpp@FreeBSD.org> | 1997-02-13 18:29:30 +0000 |
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committer | mpp <mpp@FreeBSD.org> | 1997-02-13 18:29:30 +0000 |
commit | 8f9baa2a052352e6312ea5464aba6524576f7958 (patch) | |
tree | 619bb01b29ee8da4bf197c234094edc2065769b0 /share/man/man4/vn.4 | |
parent | 8a5f6f307324acd368703c5b889d82f6d470bde0 (diff) | |
download | FreeBSD-src-8f9baa2a052352e6312ea5464aba6524576f7958.zip FreeBSD-src-8f9baa2a052352e6312ea5464aba6524576f7958.tar.gz |
Add vn(4) to document vn pseudo-devices.
Obtained from: NetBSD
Diffstat (limited to 'share/man/man4/vn.4')
-rw-r--r-- | share/man/man4/vn.4 | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/share/man/man4/vn.4 b/share/man/man4/vn.4 new file mode 100644 index 0000000..a0dc0f2 --- /dev/null +++ b/share/man/man4/vn.4 @@ -0,0 +1,90 @@ +.\" $NetBSD: vnd.4,v 1.1 1995/12/30 18:10:48 thorpej Exp $ +.\" +.\" Copyright (c) 1995 Jason R. Thorpe. +.\" 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 for the NetBSD Project +.\" by Jason R. Thorpe. +.\" 4. Neither the name of the author 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 AUTHOR ``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 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 December 30, 1995 +.Dt VN 4 +.Os +.Sh NAME +.Nm vn +.Nd vnode disk driver +.Sh SYNOPSIS +.Cd "pseudo-device vn" Op Ar count +.Sh DESCRIPTION +The +.Nm +driver provides a disk-like interface to a file. This is useful for +a variety of applications, including swap files and building mini-root +or floppy disk images. +.Pp +This document assumes that you're familiar with how to generate kernels, +how to properly configure disks and pseudo-devices in a kernel +configuration file. +.Pp +In order to compile in support for the +.Nm vn , +you must add a line similar +to the following to your kernel configuration file: +.Bd -unfilled -offset indent +pseudo-device vn 4 #Vnode driver +.Ed +.Pp +The +.Ar count +argument is how many +.Nm vn Ns 's +memory is allocated for a boot time. In this example, no more than 4 +.Nm vn Ns 's +may be configured. +.Pp +There is a run-time utility that is used for configuring +.Nm vn Ns 's . +See +.Xr vnconfig 8 +for more information. +.Sh BUGS +The +.Nm +driver does not work if the file does not reside in a local filesystem. +.Sh FILES +/dev/{,r}vn* - vn device special files. +.Pp +.Sh HISTORY +The vnode disk driver was originally written at the University of +Utah. +.Sh SEE ALSO +.Xr MAKEDEV 8 , +.Xr config 8 , +.Xr fsck 8 , +.Xr mount 8 , +.Xr newfs 8 , +.Xr vnconfig 8 . |