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#! /bin/bash
# The functions used to mount and unmount the filesystems for lvmbuilder
# lvmbuilder -- Debian package builder using LVM
# Copyright (C) 2007 Kapil Hari Paranjape
# based on:
# pbuilder -- personal Debian package builder
# Copyright (C) 2001-2006 Junichi Uekawa
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# lvmbuilder by Kapil Hari Paranjape <kapil@debian.org> 2007 Aug 15
# pbuilder by Junichi Uekawa <dancer@debian.org> 2001 Aug 25
set -e
function clean_basedev(){
echo -n "This will wipe out $BASEDEV. Proceed?[y/N]"
read ans
if [ "$ans" != "y" -a "$ans" != "Y" ]
then
exit 0
fi
echo "Making new file system at $BASEDEV."
mke2fs $BASEDEV
}
function unmount_basedev(){
umount $BASEDEV
e2fsck -f -v $BASEDEV
}
function setup_workplace(){
# Size computations
BASESIZE=$(blockdev --getsize $BASEDEV)
COWSIZE=$(blockdev --getsize $COWDEV)
TOTAL=$[ $COWSIZE + $BASESIZE ]
# Load the necessary modules
modprobe dm_zero dm_mirror dm_snapshot dm_mod
## Create the total base device
# It consists of the base device extended by zeroes.
# The length of the zeroes is the size of the cow.
( echo 0 $BASESIZE linear $BASEDEV 0 ; \
echo $BASESIZE $COWSIZE zero ) | \
dmsetup create $TOTALNAME
## Create the work device
# It is the snapshot device with the all writes
# going to the cow device. The file-system is resized
# to the maximum extent possible.
echo 0 $TOTAL snapshot $TOTALDEV $COWDEV n 16 | \
dmsetup create $WORKNAME
[ -b $WORKDEV ] && resize2fs $WORKDEV
mount $WORKDEV $BUILDPLACE
}
function takedown_workplace(){
umount /dev/mapper/lvmbuilder-work
dmsetup remove lvmbuilder-work
dmsetup remove lvmbuilder-total
}
function showhelp(){
cat <<EOF
lvmbuilder - Debian package builder using pbuilder and lvm
Copyright 2007 Kapil Hari Paranjape
Based on:
pbuilder - a personal builder
Copyright 2001-2006 Junichi Uekawa
Distributed under GNU Public License version 2 or later
lvmbuilder [operation] [lvmbuilder-options]
command lines:
lvmbuilder create [--basedev base-device-path] [--distribution sarge|etch|sid|experimental]
Creates a base distribution on an ext2 filesystem on the base block device
lvmbuilder update [--basedev base-device-path] [--distribution sarge|etch|sid|experimental]
Updates a base distribution on an ext2 filesystem on the base block device
lvmbuilder build [--basedev base-device-path] [--cowdev cow-device-path] pkgsrc.dsc
Builds using the base distribution with all writes going to cow block device.
Requires a .dsc filename
lvmbuilder clean [--basedev base-device-path]
Creates a fresh ext2fs file system on the base block device.
lvmbuilder login
lvmbuilder execute -- [command] [command-options]
Logs in to the build environment and execute command.
lvmbuilder dumpconfig
Dumps configuration information to stdout for debugging.
lvmbuilder-options:
--basedev [base device location]
--cowdev [cow device location]
--buildplace [location of build]
--mirror [mirror location]
--othermirror [other mirror location in apt deb-line format, delimited with | signs]
--http-proxy [proxy]
--distribution [distribution(sarge|sid|etch|experimental)]
--buildresult [location-to-copy-build-result]
--aptcache [location of retrieved package files]
--removepackages [packages-to-remove on pbuilder create]
--extrapackages [packages-to-add on pbuilder create]
--configfile [configuration file to load]
--debemail [mail address]
--debbuildopts [dpkg-buildpackage options]
--logfile [filename to output log]
--pkgname-logfile
--aptconfdir [overriding apt config dir]
--timeout [timeout time]
--override-config
--binary-arch
--debug
--autocleanaptcache
--debootstrapopts [debootstrap options]
--debootstrap [debootstrap|cdebootstrap]
EOF
exit 1
}
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