2006-02-17 09:56:15 +03:00
|
|
|
.\" $NetBSD: vndcompress.1,v 1.4 2006/02/17 06:56:15 wiz Exp $
|
2005-07-25 16:17:59 +04:00
|
|
|
.\"
|
|
|
|
.\" Copyright (c) 2005 Florian Stoehr <netbsd@wolfnode.de>
|
|
|
|
.\" 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 Florian Stoehr
|
|
|
|
.\" 4. The name of the author may not 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.
|
|
|
|
.\"
|
|
|
|
.\"
|
2005-12-13 00:04:31 +03:00
|
|
|
.Dd December 12, 2005
|
|
|
|
.Dt VNDCOMPRESS 1
|
2005-07-25 16:17:59 +04:00
|
|
|
.Os
|
|
|
|
.Sh NAME
|
|
|
|
.Nm vndcompress ,
|
|
|
|
.Nm vnduncompress
|
|
|
|
.Nd compress/uncompress file system images to/from cloop2 format
|
|
|
|
.Sh SYNOPSIS
|
2005-07-25 16:24:40 +04:00
|
|
|
.Nm
|
2005-07-25 16:17:59 +04:00
|
|
|
.Op Fl cd
|
|
|
|
.Ar disk/fs-image
|
|
|
|
.Ar compressed-image
|
|
|
|
.Op Ar blocksize
|
|
|
|
.Nm vnduncompress
|
|
|
|
.Op Fl cd
|
|
|
|
.Ar compressed-image
|
|
|
|
.Ar disk/fs-image
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
The
|
|
|
|
.Nm
|
2005-07-25 16:24:40 +04:00
|
|
|
program compresses an existing file system image
|
2005-07-25 16:17:59 +04:00
|
|
|
into a cloop2 compatible compressed file system image.
|
|
|
|
An optional blocksize can be given.
|
|
|
|
If omitted, the default of 64kB is used.
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Nm vnduncompress
|
|
|
|
command decompress a cloop2-compressed file system image back into a
|
|
|
|
regular image.
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
file system images that can be handled are not limited to any specific
|
|
|
|
file system, i.e. it is possible to handle images e.g. in ISO 9660 or
|
2005-07-25 16:24:40 +04:00
|
|
|
UFS/FFS format.
|
|
|
|
File system images in the cloop2 format are intended to be used with the
|
2005-07-25 16:17:59 +04:00
|
|
|
.Xr vnd 4
|
|
|
|
driver in compressed mode as configured by the
|
|
|
|
.Fl z
|
|
|
|
option of the
|
|
|
|
.Xr vnconfig 8
|
2005-07-25 16:24:40 +04:00
|
|
|
program, and later mounted with the appropriate
|
2005-07-25 16:17:59 +04:00
|
|
|
.Fl t
|
|
|
|
option to
|
|
|
|
.Xr mount 8 .
|
|
|
|
.Sh OPTIONS
|
|
|
|
The following options are available:
|
|
|
|
.Bl -tag -width indent
|
|
|
|
.It Fl c
|
2005-07-25 16:24:40 +04:00
|
|
|
Always compress, even if the programm was started as
|
2005-07-25 16:17:59 +04:00
|
|
|
.Nm vnduncompress .
|
|
|
|
.It Fl d
|
2005-07-25 16:24:40 +04:00
|
|
|
Always uncompress (decompress), even if the program was started as
|
|
|
|
.Nm .
|
2005-07-25 16:17:59 +04:00
|
|
|
.El
|
|
|
|
.Sh EXIT STATUS
|
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
and
|
2006-02-17 09:56:15 +03:00
|
|
|
.Nm vnduncompress
|
2005-07-25 16:17:59 +04:00
|
|
|
utilities exit with one of the following values:
|
|
|
|
.Bl -tag -width 4n
|
|
|
|
.It 0
|
|
|
|
The operation was performed successfully.
|
|
|
|
.It 1
|
|
|
|
An error occurred.
|
|
|
|
.El
|
|
|
|
.Sh EXAMPLES
|
|
|
|
To compress an existing CD-ROM file system image, run the following
|
|
|
|
commands:
|
|
|
|
.Bd -literal -offset indent
|
|
|
|
# vndcompress netbsd.iso netbsd.izo
|
|
|
|
.Ed
|
|
|
|
.Pp
|
|
|
|
Note that the resulting compressed image cannot be mounted directly
|
2005-07-25 16:24:40 +04:00
|
|
|
via
|
|
|
|
.Nx Ap s
|
2005-07-25 16:17:59 +04:00
|
|
|
.Xr vnd 4
|
|
|
|
and
|
|
|
|
.Xr mount_cd9660 8
|
2005-07-25 16:24:40 +04:00
|
|
|
commands any longer.
|
|
|
|
Instead, you will have to use the
|
2005-07-25 16:17:59 +04:00
|
|
|
.Fl z
|
|
|
|
option of
|
|
|
|
.Xr vnconfig 8 .
|
|
|
|
.Pp
|
|
|
|
The following example decompresses an existing CD-ROM file system
|
|
|
|
image that was compressed in the cloop2 format into a regular
|
|
|
|
file that can then be mounted:
|
|
|
|
.Bd -literal -offset indent
|
|
|
|
# vnconfig vnd0 KNOPPIX.iso
|
|
|
|
# mount -t cd9660 -o ro /dev/vnd0d /mnt
|
|
|
|
# vnduncompress /mnt/KNOPPIX/KNOPPIX /var/tmp/knoppix.iso
|
|
|
|
# umount /mnt
|
|
|
|
# vnconfig -u vnd0
|
|
|
|
#
|
|
|
|
# vnconfig vnd1 /var/tmp/knoppix.iso
|
|
|
|
# mount -t cd9660 -o ro /dev/vnd1d /mnt
|
|
|
|
# ls /mnt
|
|
|
|
\&.rr_moved cdrom floppy lib opt sbin usr
|
|
|
|
bin dev home mnt proc sys var
|
|
|
|
boot etc initrd none root tmp vmlinuz
|
|
|
|
# umount /mnt
|
|
|
|
# vnconfig -u vnd1
|
|
|
|
.Ed
|
|
|
|
.Pp
|
|
|
|
As an alternative, if your
|
|
|
|
.Xr vnd 4
|
2005-07-25 16:24:40 +04:00
|
|
|
was compiled with
|
|
|
|
.Dv VND_COMPRESSION ,
|
|
|
|
you can use
|
2005-07-25 16:17:59 +04:00
|
|
|
.Xr vnconfig 8
|
2005-07-25 16:24:40 +04:00
|
|
|
to access the cloop-compressed image directly, e.g.,
|
2005-07-25 16:17:59 +04:00
|
|
|
.Bd -literal -offset indent
|
|
|
|
# vnconfig vnd0 KNOPPIX.iso
|
|
|
|
# mount -t cd9660 -o ro /dev/vnd0d /mnt
|
|
|
|
# vnconfig -z vnd1 /mnt/KNOPPIX/KNOPPIX
|
|
|
|
# mount -t cd9660 -o ro /dev/vnd1d /mnt2
|
|
|
|
# ls /mnt2
|
|
|
|
\&.rr_moved cdrom floppy lib opt sbin usr
|
|
|
|
bin dev home mnt proc sys var
|
|
|
|
boot etc initrd none root tmp vmlinuz
|
|
|
|
# df /mnt /mnt2
|
|
|
|
Filesystem Size Used Avail Capacity Mounted on
|
|
|
|
/dev/vnd0a 692M 692M 0B 100% /mnt
|
|
|
|
/dev/vnd1a 1.9G 1.9G 0B 100% /mnt2
|
|
|
|
# umount /mnt2
|
|
|
|
# vnconfig -u vnd1
|
|
|
|
# umount /mnt
|
|
|
|
# vnconfig -u vnd0
|
|
|
|
.Ed
|
|
|
|
.Pp
|
2005-07-25 16:24:40 +04:00
|
|
|
Note how the 1.9GB big filesystem on
|
2005-07-25 16:17:59 +04:00
|
|
|
.Pa /mnt2
|
|
|
|
is mounted from the compressed file stored on the 692MB CD mounted
|
2005-07-25 16:24:40 +04:00
|
|
|
on
|
2005-07-25 16:17:59 +04:00
|
|
|
.Pa /mnt .
|
|
|
|
To create a compressed file system image of an existing
|
|
|
|
directory and mount it, run:
|
|
|
|
.Bd -literal -offset indent
|
|
|
|
# makefs -t ffs include.fs /usr/include
|
|
|
|
# vndcompress include.fs include.fs.cloop2
|
|
|
|
# vnconfig -z vnd0 include.fs.cloop2
|
|
|
|
# mount -o ro /dev/vnd0a /mnt
|
|
|
|
# ls /mnt
|
|
|
|
.Ed
|
|
|
|
.Pp
|
|
|
|
To undo the steps, run:
|
|
|
|
.Bd -literal -offset indent
|
|
|
|
# umount /mnt
|
|
|
|
# vnconfig -u vnd0
|
|
|
|
# rm /tmp/include.img.cloop2
|
|
|
|
# rm /tmp/include.img
|
|
|
|
.Ed
|
|
|
|
.Sh SEE ALSO
|
|
|
|
.Xr gzip 1 ,
|
|
|
|
.Xr vnd 4 ,
|
|
|
|
.Xr mount 8 ,
|
|
|
|
.Xr mount_cd9660 8 ,
|
|
|
|
.Xr vnconfig 8
|
|
|
|
.Sh AUTHORS
|
2005-07-25 16:24:40 +04:00
|
|
|
.An -nosplit
|
2005-07-25 16:17:59 +04:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
utility was written by
|
|
|
|
.An Florian Stoehr
|
|
|
|
.Aq netbsd@wolfnode.de .
|
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
manual page was written by
|
|
|
|
.An Florian Stoehr
|
|
|
|
.Aq netbsd@wolfnode.de
|
|
|
|
and
|
|
|
|
.An Hubert Feyrer
|
|
|
|
.Aq hubertf@NetBSD.org .
|