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Diffstat (limited to 'polystrap/polystrap.sh')
| -rwxr-xr-x | polystrap/polystrap.sh | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/polystrap/polystrap.sh b/polystrap/polystrap.sh new file mode 100755 index 000000000..2f1f09163 --- /dev/null +++ b/polystrap/polystrap.sh @@ -0,0 +1,181 @@ +#!/bin/sh +# +# polystrap - create a foreign architecture rootfs using multistrap, fakeroot, +# fakechroot and qemu usermode emulation +# +# Copyright (C) 2011 by Johannes 'josch' Schauer <j.schauer@email.de> +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to deal +# in the Software without restriction, including without limitation the rights +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +# copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +# FROM,OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +# IN THE SOFTWARE. + +usage() { + echo "Usage: $0: [-f] [-v] [-n] [-s suite] [-a arch] [-d directory] [-m mirror] [-p packages] platform\n" >&2 +} + +export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true LC_ALL=C LANGUAGE=C LANG=C +export PATH=$PATH:/usr/sbin:/sbin + +if [ "$FAKEROOTKEY" = "" ]; then + echo "I: re-executing script inside fakeroot" + fakeroot "$0" "$@"; + exit +fi + +FORCE="" +MSTRAP_SIM= +EXIT_ON_ERROR=true +while getopts efvs:a:d:m:p:n opt; do + case $opt in + s) _SUITE="$OPTARG";; + a) _ARCH="$OPTARG";; + d) _ROOTDIR="$OPTARG";; + m) _MIRROR="$OPTARG";; + p) _PACKAGES="$OPTARG";; + n) MSTRAP_SIM="--simulate";; + e) EXIT_ON_ERROR=false;; + v) set -x;; + f) FORCE=true;; + ?) usage; exit 1;; + esac +done +shift $(($OPTIND - 1)) + +[ "$#" -ne 1 ] && { echo "too many positional arguments" >&2; usage; exit 1; } + +[ "$EXIT_ON_ERROR" = true ] && set -e + +BOARD="$1" + +[ ! -r "$BOARD" ] && { echo "cannot find target directory: $BOARD" >&2; exit 1; } +[ ! -r "$BOARD/multistrap.conf" ] && { echo "cannot read multistrap config: $BOARD/multistrap.conf" >&2; exit 1; } + +# source default options +. "default/config" + +# overwrite default options by target options +[ -r "$BOARD/config" ] && . "$BOARD/config" + +# overwrite target options by commandline options +SUITE=${_SUITE:-$SUITE} +ARCH=${_ARCH:-$ARCH} +ROOTDIR=$(readlink -m ${_ROOTDIR:-$ROOTDIR}) +MIRROR=${_MIRROR:-$MIRROR} + +if [ "$_PACKAGES" = "" ] && [ -r "$BOARD/packages" ]; then + # if no packages were given by commandline, read from package files + for f in $BOARD/packages/*; do + while read line; do PACKAGES="$PACKAGES $line"; done < "$f" + done +else + # otherwise set as given by commandline + PACKAGES="$_PACKAGES" +fi + +export QEMU_LD_PREFIX="`readlink -m "$ROOTDIR"`" +export FAKECHROOT_CMD_SUBST=/usr/bin/ldd=/usr/bin/ldd.fakechroot:/sbin/ldconfig=/bin/true + +echo "I: --------------------------" +echo "I: suite: $SUITE" +echo "I: arch: $ARCH" +echo "I: rootdir: $ROOTDIR" +echo "I: mirror: $MIRROR" +echo "I: pkgs: $PACKAGES" +echo "I: --------------------------" + +[ -e "$ROOTDIR.tar" ] && [ ! "$FORCE" = true ] && { echo "tarball $ROOTDIR.tar still exists" >&2; exit 1; } + +# if rootdir exists, either warn and abort or delete and continue +if [ -e "$ROOTDIR" ]; then + if [ "$FORCE" = true ]; then + rm -rf $ROOTDIR + else + echo "root directory $ROOTDIR still exists" >&2 + exit 1 + fi +fi + +# create multistrap.conf +echo "I: create multistrap.conf" +MULTISTRAPCONF=`tempfile -d . -p multistrap` +echo -n > "$MULTISTRAPCONF" +while read line; do + eval echo $line >> "$MULTISTRAPCONF" +done < $BOARD/multistrap.conf + +# download and extract packages +echo "I: run multistrap" >&2 +multistrap $MSTRAP_SIM -f "$MULTISTRAPCONF" +[ -z "$MSTRAP_SIM" ] || exit 0 + +rm -f "$MULTISTRAPCONF" + +# convert absolute symlinks for fakechroot +for link in `find $ROOTDIR -type l`; do + target=`readlink $link` + if [ "${target%%/*}" = "" ]; then # target begins with slash + echo "I: convert symlink: ${link#$ROOTDIR} -> $target" + rm $link + ln -s ${ROOTDIR}$target $link + fi +done + +# copy initial directory tree - dereference symlinks +echo "I: copy initial directory root tree $BOARD/root/ to $ROOTDIR/" +if [ -r "$BOARD/root" ]; then + cp --recursive --dereference $BOARD/root/* $ROOTDIR/ +fi + +# preseed debconf +echo "I: preseed debconf" +if [ -r "$BOARD/debconfseed.txt" ]; then + cp "$BOARD/debconfseed.txt" $ROOTDIR/tmp/ + fakechroot chroot $ROOTDIR debconf-set-selections /tmp/debconfseed.txt + rm $ROOTDIR/tmp/debconfseed.txt +fi + +# run preinst scripts +for script in $ROOTDIR/var/lib/dpkg/info/*.preinst; do + [ "$script" = "$ROOTDIR/var/lib/dpkg/info/vpnc.preinst" ] && continue + echo "I: run preinst script ${script##$ROOTDIR}" + DPKG_MAINTSCRIPT_NAME=preinst \ + DPKG_MAINTSCRIPT_PACKAGE="`basename $script .preinst`" \ + fakechroot chroot $ROOTDIR ${script##$ROOTDIR} install +done + +# run dpkg --configure -a twice because of errors during the first run +echo "I: configure packages" +fakechroot chroot $ROOTDIR /usr/bin/dpkg --configure -a || fakechroot chroot $ROOTDIR /usr/bin/dpkg --configure -a + +# source hooks +if [ -r "$BOARD/hooks" ]; then + for f in $BOARD/hooks/*; do + echo "I: run hook $f" + . $f + done +fi + +#cleanup +echo "I: cleanup" +rm $ROOTDIR/usr/sbin/policy-rc.d + +# need to generate tar inside fakechroot so that absolute symlinks are correct +# tar is clever enough to not try and put the archive inside itself +TARBALL=$(basename $ROOTDIR).tar +echo "I: create tarball $TARBALL" +fakechroot chroot $ROOTDIR tar -cf $TARBALL -C / . +mv $ROOTDIR/$TARBALL . |