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