init_buildsystem

#!/bin/bash
# Script to create a complete system to build packages in a chroot
# environment.  This script ensures, that all packages given as
# parameter are installed. All other packges will be deleted.
#
# BUILD_ROOT  here the packages will be installed/deleted
# BUILD_RPMS  here we get our packages to install
# BUILD_ARCH  path of the architectures we try
#
################################################################
#
# Copyright (c) 1997-2014 SUSE Linux Products GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or 3 as
# published by the Free Software Foundation.
#
# 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 (see the file COPYING); if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
################################################################

#
# needed globals variables
#
export SRC
export BUILD_DIR=${BUILD_DIR:-/usr/lib/build}

export YAST_IS_RUNNING=instsys

# slurp in package binary support
. "$BUILD_DIR/build-pkg"

# need to restore build root owner for non-root builds
browner=0
definesnstuff=()
repos=()

. $BUILD_DIR/common_functions || exit 1

BUILD_IS_RUNNING=$BUILD_ROOT/not-ready
TMPFILE=$BUILD_ROOT/tmpfile

# should RPMs be installed with --force ?
USE_FORCE=false
PREPARE_VM=
USEUSEDFORBUILD=
LIST_STATE=
RPMLIST=
CLEAN_BUILD=
CREATE_BUILD_BINARIES=
DLNOSIGNATURE=
CACHE_DIR=/var/cache/build

while test -n "$1" ; do
    case "$1" in
	--prepare)
	    shift
	    PREPARE_VM=true
	    ;;
	--create-build-binaries)
	    shift
	    CREATE_BUILD_BINARIES=true
	    ;;
	--useusedforbuild)
	    shift
	    USEUSEDFORBUILD=--useusedforbuild
	    ;;
	--list-state)
	    shift
	    LIST_STATE=true
	    ;;
	--rpmlist)
	    shift
	    RPMLIST=$1
	    shift
	    ;;
	--define|--with|--without)
	    definesnstuff[${#definesnstuff[@]}]="$1";
	    definesnstuff[${#definesnstuff[@]}]="$2";
	    shift 2
	    ;;
	--repository|--repo)
	    repos[${#repos[@]}]="$2";
	    shift 2
	    ;;
	--clean)
	    CLEAN_BUILD="$1"
	    shift
	    ;;
	--cachedir)
	    CACHE_DIR="$2"
	    shift 2
	    ;;
	--configdir)
	    CONFIG_DIR=$2
	    shift 2
	    ;;
	--nosignature)
	    shift
	    DLNOSIGNATURE="--nosignature"
	    ;;
	*)
	    break
	    ;;
    esac
done
PKGS=("$@")

#
# needed functions
#

cleanup_and_exit() {
    trap EXIT
    test "$BUILD_ROOT" = / -a -n "$browner" && chown "$browner" "$BUILD_ROOT"
    # umount so init_buildsystem can be used standalone
# XXX: use stat -f /dev/pts/ -c %T  to check whether it's mounted and not suppress errors then?
    umount -n "$BUILD_ROOT/proc/sys/fs/binfmt_misc" 2> /dev/null || true
    umount -n "$BUILD_ROOT/proc" 2> /dev/null || true
    umount -n "$BUILD_ROOT/dev/pts" 2> /dev/null || true
    umount -n "$BUILD_ROOT/mnt" 2> /dev/null || true
    exit ${1:-0}
}

clean_build_root() {
    if test -n "$BUILD_ROOT" ; then
	umount -n "$BUILD_ROOT/proc/sys/fs/binfmt_misc" 2> /dev/null || true
	umount -n "$BUILD_ROOT/proc" 2> /dev/null || true
	umount -n "$BUILD_ROOT/dev/pts" 2> /dev/null || true
	umount -n "$BUILD_ROOT/dev/shm" 2> /dev/null || true
	umount -n "$BUILD_ROOT/mnt" 2> /dev/null || true
	rm -rf -- "$BUILD_ROOT"/* 2> /dev/null || true
	chattr -a -A -i -R -- "$BUILD_ROOT" 2> /dev/null || true
	rm -rf -- "$BUILD_ROOT"/*
	rm -rf -- "$BUILD_ROOT/.build"
	rm -rf -- "$BUILD_ROOT"/.build.kernel.*
	rm -rf -- "$BUILD_ROOT"/.build.initrd.*
	rm -rf -- "$BUILD_ROOT/.root"
	rm -rf -- "$BUILD_ROOT/.init_b_cache"
	rm -rf -- "$BUILD_ROOT"/.preinstall_image/*
	rm -rf -- "$BUILD_ROOT"/.preinstallimage*
	mkdir -p "$BUILD_ROOT/proc"
	mkdir -p "$BUILD_ROOT/dev/pts"
	if test "$UID" = 0 ; then
	    mount -n -tproc none "$BUILD_ROOT/proc"
	    mount -n -tdevpts -omode=0620,gid=5 none "$BUILD_ROOT/dev/pts"
	fi
    fi
}

unsafe_preinstall_check() {
    # cpio isn't safe so we require bsdtar for VMs. chroot is
    # unsafe anyways so it's ok for that.
    if test -n "$PREPARE_VM" ; then
	echo "Error: setting up a VM requires bsdtar for security reasons."
	echo "Please install bsdtar."
	cleanup_and_exit 1
    fi
}

preinstall_image_filter() {
    for PKG in "$@" ; do
	test -e "$BUILD_ROOT/.preinstall_image/$PKG" && continue
	echo $PKG
    done
}

preinstall_image() {
    check_exit
    echo "unpacking preinstall image${2:+ $2}"
    cd $BUILD_ROOT || cleanup_and_exit 1
    if test -x /usr/bin/bsdtar ; then
	TAR="/usr/bin/bsdtar -P --chroot --numeric-owner -x"
    else
	unsafe_preinstall_check
	TAR="tar -x"
    fi
    # pipe output through perl to print a dot every 1000 lines
    if ! $TAR -z --exclude .build --exclude .init_b_cache -f "$BUILD_ROOT/.init_b_cache/rpms/$1" -v > >(tee "$BUILD_ROOT/.preinstallimage.unpack" | perl -e '$|=1; my $done=0; $done++ % 1000 or print "." while <STDIN>; print "\n";')  2>&1 ; then
	echo "unpack failed."
	test -e "$BUILD_ROOT/.preinstallimage.unpack" && cat "$BUILD_ROOT/.preinstallimage.unpack"
	cleanup_and_exit 1
    fi
    rm -f "$BUILD_ROOT/.preinstallimage.unpack"
}

preinstall() {
    local PKG="$1"
    check_exit
    echo "preinstalling $PKG..."
    cd $BUILD_ROOT || cleanup_and_exit 1
    if test -x /usr/bin/bsdtar ; then
	CPIO="/usr/bin/bsdtar -P --chroot -o --numeric-owner -x -f-"
	TAR="/usr/bin/bsdtar -P --chroot -o --numeric-owner -x"
    else
	unsafe_preinstall_check
	CPIO="cpio --extract --unconditional --preserve-modification-time --make-directories --no-absolute-filenames --quiet"
	TAR="tar -x"
    fi
    pkg_preinstall
}

run_pkg_scripts() {
    chroot $BUILD_ROOT /sbin/ldconfig 2>/dev/null
    for PKG in $PACKAGES_TO_RUNSCRIPTS ; do
	pkg_runscripts
	check_exit
    done
}

reorder() {
    test -z "$*" && return
    rm -f $BUILD_ROOT/.init_b_cache/order.manifest
    for PKG in "$@" ; do
	echo "$PKG" >> $BUILD_ROOT/.init_b_cache/order.manifest
    done
    $BUILD_DIR/order --dist "$BUILD_DIST" --archpath "$BUILD_ARCH" --configdir $CONFIG_DIR --manifest $BUILD_ROOT/.init_b_cache/order.manifest $BUILD_ROOT/.init_b_cache/rpms || touch $BUILD_ROOT/exit
    rm -f $BUILD_ROOT/.init_b_cache/order.manifest
}

create_devs() {
    local com file mode arg

    mkdir -m 755 -p $BUILD_ROOT/dev/pts
    test -d $BUILD_ROOT/dev/shm || rm -f $BUILD_ROOT/dev/shm
    mkdir -m 755 -p $BUILD_ROOT/dev/shm
    while read com file mode arg ; do
	rm -f $BUILD_ROOT/dev/$file
	if test $com = ln ; then
	    ln -s $arg $BUILD_ROOT/dev/$file
	    continue
	fi
	$com -m $mode $BUILD_ROOT/dev/$file $arg
    done << DEVLIST
	mknod null    666 c 1 3
	mknod zero    666 c 1 5
	mknod full    622 c 1 7
	mknod random  666 c 1 8
	mknod urandom 644 c 1 9
	mknod tty     666 c 5 0
	mknod ptmx    666 c 5 2
	mknod loop-control 600 c 10 237
	mknod loop0   640 b 7 0
	mknod loop1   640 b 7 1
	mknod loop2   640 b 7 2
	mknod loop3   640 b 7 3
	ln    fd      777 /proc/self/fd
	ln    stdin   777 fd/0
	ln    stdout  777 fd/1
	ln    stderr  777 fd/2
DEVLIST
}

# check whether the repo list contains a plain "zypp://". Add all
# enabled zypp repos in this case
expand_plain_zypp_repo() {
    local i j
    r=()
    for i in "${repos[@]}"; do
	if test "$i" = "zypp://" ; then
	    for j in $($BUILD_DIR/createzyppdeps --listrepos) ; do
		r=("${r[@]}" "zypp://$j")
	    done
	else
	    r=("${r[@]}" "$i")
	fi
    done
    repos=("${r[@]}")
}

create_cache_file() {
    local findonly=
    expand_plain_zypp_repo
    if ! test -f $CACHE_FILE || ! test -f $CACHE_FILE.id || \
	test "${repos[*]} ${BUILD_RPMS//:/ /}" != "$(cat $CACHE_FILE.id 2>/dev/null)"; then
	rm -f $CACHE_FILE.id
    else
	for SRC in "${repos[@]}" ${BUILD_RPMS//:/ /}; do
	    test -n "$SRC" || SRC=.
	    if test "${SRC#zypp://}" != "$SRC" ; then
		SRC="/var/cache/zypp/raw/${SRC#zypp://}"
	    fi
	    if test "$SRC" -nt $CACHE_FILE; then
		rm -f $CACHE_FILE.id
		break
	    fi
	    # always rebuild if we have remote repositories and --clean is given
	    if test -n "$CLEAN_BUILD" -a "$SRC" != "${SRC#*://}" -a "${SRC#zypp://}" = "$SRC" ; then
		rm -f $CACHE_FILE.id
		break
	    fi
	done
    fi
    if ! test -f $CACHE_FILE.id ; then
	test -z "$LIST_STATE" && echo initializing $CACHE_FILE ...
	REPOTYPE=
	if test -n "$BUILD_DIST" ; then
	    for i in `queryconfig repotype --dist "$BUILD_DIST" --configdir "$CONFIG_DIR" --archpath "$BUILD_ARCH"` ; do
		case $i in
		    arch|debian|hdlist2|rpm-md) REPOTYPE=$i
		esac
		test -n "$REPOTYPE" && break
	    done
	    if test -z "$REPOTYPE"; then
		BINTYPE=`queryconfig binarytype --dist "$BUILD_DIST" --configdir "$CONFIG_DIR" --archpath "$BUILD_ARCH"`
		case "$BINTYPE" in
		    arch) REPOTYPE=arch ;;
		    deb)  REPOTYPE=debian ;;
		esac
	    fi
	fi
	if test -z "$REPOTYPE" ; then
	    # check the first init_buildsystem arg, maybe it is a recipe
	    case ${PKGS[0]} in
		*.spec)
		    REPOTYPE=rpm-md ;;
		*.dsc)
		    REPOTYPE=debian ;;
		*/PKGBUILD|PKGBUILD)
		    REPOTYPE=arch ;;
	    esac
	fi
	for SRC in "${repos[@]}" -- ${BUILD_RPMS//:/ /}; do
	    if test "$SRC" = '--' ; then
		findonly=1
		continue
	    fi
	    test -z "$SRC" && SRC=`pwd`
	    if test "${SRC#http://}" != "$SRC" -o "${SRC#https://}" != "$SRC" -o "${SRC#ftp://}" != "$SRC" -o "${SRC#ftps://}" != "$SRC" ; then
		# remote repo, cache binary packages
		mkdir -p "$(getcachedir "$SRC")"
		if test "$REPOTYPE" = arch ; then
		    set -- $BUILD_DIR/createarchdeps --cachedir="$CACHE_DIR" "$SRC"
		elif test "$REPOTYPE" = debian ; then
		    set -- $BUILD_DIR/createdebdeps --cachedir="$CACHE_DIR" --archpath "$BUILD_ARCH" "$SRC"
		elif test "$REPOTYPE" = hdlist2 ; then
		    set -- $BUILD_DIR/createmdkdeps --cachedir="$CACHE_DIR" "$SRC"
		else
		    set -- $BUILD_DIR/createrepomddeps --cachedir="$CACHE_DIR" "$SRC"
		fi
	    elif test "${SRC#zypp://}" != "$SRC" ; then
		# special zypp repo
		set -- $BUILD_DIR/createzyppdeps --cachedir="$CACHE_DIR" "$SRC"
	    elif test ! -e "$SRC" ; then
		echo "*** $SRC does not exist" >&2
		cleanup_and_exit 1
	    elif test -z "$findonly" -a \( -e "$SRC"/suse/setup/descr/packages -o -e "$SRC"/suse/setup/descr/packages.gz \) ; then
		set -- $BUILD_DIR/createyastdeps "$SRC"
	    elif test -z "$findonly" -a -e "$SRC"/repodata/repomd.xml ; then
		set -- $BUILD_DIR/createrepomddeps "$SRC"
	    else
		set -- $BUILD_DIR/createdirdeps --oldfile "$CACHE_FILE" "$SRC"
	    fi
	    echo "$@" >&2
	    "$@" || cleanup_and_exit 1
	    echo D:
	done > $CACHE_FILE.new

	mv $CACHE_FILE.new $CACHE_FILE
	echo "${repos[*]} ${BUILD_RPMS//:/ /}" > $CACHE_FILE.id
    fi
}

fail_exit() {
    cleanup_and_exit 1
}

# modifies $SRC
downloadpkg() {
    local url="$1"
    local cachedir

    if test "${url:0:7}" == "zypp://" -o "${url:0:7}" == "http://" -o "${url:0:8}" == "https://" -o "${url:0:6}" == "ftp://" -o "${url:0:7}" == "ftps://" ; then
	cachedir="$(getcachedir "$url")"
	local name="$(basename "$url")"
	name=${name/%.pkg.tar.?z/.arch}
	SRC="$cachedir/$name"
    else
	echo "Invalid url: $url"
	cleanup_and_exit 1
    fi

    local destdir="$cachedir/tmp"
    mkdir -p "$destdir"
    echo "downloading $url ... ";
    $BUILD_DIR/download "$destdir" "$url" || cleanup_and_exit 1
    local destfile="$destdir/${url##*/}"
    if test ! -e "$destfile" ; then
	echo "expected $destfile after download but it's missing" >&2
	cleanup_and_exit 1
    fi
    # for rpm check integrity and the signature
    case $destfile in
      *.rpm)
	rpm -K $DLNOSIGNATURE "$destfile" > $destfile.v || { echo "rpm verify failed" >&2; rm -rf "$destdir"; cleanup_and_exit 1; }
	if grep "NOT OK" $destfile.v; then
	    rm -rf "$destdir"
	    cleanup_and_exit 1
	fi
	rm -f "$destfile.v"
	;;
    esac
    mv "$destfile" "$SRC" || cleanup_and_exit 1
}

getcachedir() {
    local url=$1
    for repo in "${repos[@]}" ; do
	if test "${url:0:${#repo}}" == "$repo" ; then
	    read repoid dummy < <(echo -n "$repo" | md5sum)
	    echo "$CACHE_DIR/$repoid"
	    break
	fi
    done
}

can_reuse_cached_package() {
    local cachepkgid pkgid xpkgid
    test -s "$1" || return 1
    if test -s "$BUILD_ROOT/.init_b_cache/rpms/$PKG.id" ; then
        pkgid=$(perl -I$BUILD_DIR -MBuild -e Build::showquery "$1" buildid)
	read cachepkgid < $BUILD_ROOT/.init_b_cache/rpms/$PKG.id
	# check if the build time is zero
	case $cachepkgid in
	    *" 0-"*) xpkgid="${pkgid##* }"; pkgid="${pkgid% *} 0-${xpkgid#*-}" ;;
	esac
	test "$cachepkgid" = "$pkgid" || return 1
    fi
    return 0
}

set_build_arch

trap fail_exit EXIT

if test "$BUILD_ROOT" = / ; then
    browner="$(stat -c %u /)"
fi

if test -n "$CLEAN_BUILD" ; then
    clean_build_root
fi

#
# now test if there was an incomplete run
#
if test -e "$BUILD_IS_RUNNING" ; then
    echo "It seems that there was an incomplete setup of $BUILD_ROOT."
    echo "To be sure, we will build it again completely..."
    umount -n $BUILD_ROOT/proc/sys/fs/binfmt_misc 2> /dev/null || true
    umount -n $BUILD_ROOT/proc 2> /dev/null
    umount -n $BUILD_ROOT/dev/pts 2> /dev/null
    umount -n $BUILD_ROOT/mnt 2> /dev/null
    echo "Your build system is broken!! Shall I execute"
    echo
    echo "    rm -rf -- $BUILD_ROOT/*"
    echo
    echo "y - yes, cleanup the build root"
    echo "N - No, abort build (default on enter)"
    echo "c - Continue anyway with this build root"
    echo -n "[y/N/c] "
    read ANSWER
    case "$ANSWER" in
	c|C)
	    rm -f $BUILD_IS_RUNNING ;;
	y|Y)
	    clean_build_root ;;
	*)
	    cleanup_and_exit 1 ;;
    esac
fi

#
# store that we start to build system
#
mkdir -p $BUILD_ROOT
mkdir -p $BUILD_ROOT/.build
touch $BUILD_IS_RUNNING

if test -n "$PREPARE_VM" ; then
    rm -f $BUILD_ROOT/.build/init_buildsystem.data
fi

if test -e $BUILD_ROOT/.build/init_buildsystem.data ; then
    # vm continuation
    . $BUILD_ROOT/.build/init_buildsystem.data
    if ! test -e $BUILD_ROOT/.init_b_cache/preinstall_finished ; then
	# finish preinstall
	run_pkg_scripts
	pkg_initdb
	touch $BUILD_ROOT/.init_b_cache/preinstall_finished
    fi
else
    #
    # now make sure that all the packages are installed.
    #
    rm -rf "$BUILD_ROOT/.init_b_cache"
    mkdir -p "$BUILD_ROOT/.init_b_cache/scripts"

    if test -z "$RPMLIST" ; then
	#
	# create rpmdeps file
	#
	CACHE_FILE=$BUILD_ROOT/.srcfiles.cache
	create_cache_file

	#
	# select and expand packages
	#
	RPMLIST=$BUILD_ROOT/.init_b_cache/rpmlist
	test -z "$LIST_STATE" && echo "expanding package dependencies..."
	if ! $BUILD_DIR/expanddeps $USEUSEDFORBUILD "${definesnstuff[@]}" --dist "$BUILD_DIST" --depfile "$CACHE_FILE" --archpath "$BUILD_ARCH" --configdir $CONFIG_DIR "${PKGS[@]}" > $RPMLIST ; then
	    rm -f $BUILD_IS_RUNNING
	    cleanup_and_exit 1
	fi
    fi

    if test -n "$LIST_STATE" ; then
	rm -f $BUILD_IS_RUNNING
	while read PKG SRC ; do
	   test "$PKG" = "preinstall:" && continue
	   test "$PKG" = "runscripts:" && continue
	   test "$PKG" = "cbpreinstall:" && continue
	   test "$PKG" = "vminstall:" && continue
	   test "$PKG" = "dist:" && continue
	   test "$PKG" = "rpmid:" && continue
	   echo "${SRC##*/}"
	done < $BUILD_ROOT/.init_b_cache/rpmlist
	rm -rf "$BUILD_ROOT/.init_b_cache"
	cleanup_and_exit 0
    fi

    #
    # register the QEMU emulator if needed
    # (we do not need this for the prepare step, as we do not run scripts in this case)
    #
    if test -z "$PREPARE_VM" ; then
	if check_use_emulator ; then
	    echo "registering binfmt handlers for cross build"
	    "$BUILD_DIR/$INITVM_NAME"
	    echo 0 > /proc/sys/vm/mmap_min_addr
	    read mmap_min_addr < /proc/sys/vm/mmap_min_addr
	    if test "$mmap_min_addr" != 0 ; then
		echo "Warning: mmap_min_addr is != 0. If programs fail at mmap this could be the reason."
	    fi
	fi
    fi

    #
    # extract the data from the (generated) rpm list
    #
    PACKAGES_TO_INSTALL=
    PACKAGES_TO_PREINSTALL=
    PACKAGES_TO_RUNSCRIPTS=
    PACKAGES_TO_VMINSTALL=
    PACKAGES_TO_INSTALLONLY=
    PACKAGES_TO_NOINSTALL=
    PREINSTALL_IMAGE=
    PREINSTALL_IMAGE_SOURCE=
    RUNSCRIPTS_SEEN=
    PACKAGES_FROM_PREINSTALLIMAGE=
    GUESSED_DIST=unknown
    mkdir -p $BUILD_ROOT/.init_b_cache/rpms
    rm -f $BUILD_ROOT/.init_b_cache/rpmlist.download
    while read PKG SRC ; do
	if test "$PKG" = "preinstall:" ; then
	    PACKAGES_TO_PREINSTALL=$SRC
	    continue
	fi
	if test "$PKG" = "vminstall:" ; then
	    PACKAGES_TO_VMINSTALL=$SRC
	    continue
	fi
	if test "$PKG" = "installonly:" ; then
	    PACKAGES_TO_INSTALLONLY=$SRC
	    continue
	fi
	if test "$PKG" = "noinstall:" ; then
	    PACKAGES_TO_NOINSTALL=$SRC
	    continue
	fi
	if test "$PKG" = "preinstallimage:" ; then
	    PREINSTALL_IMAGE=${SRC##*/}
	    ln -s "$SRC" "$BUILD_ROOT/.init_b_cache/rpms/${SRC##*/}"
	    continue
	fi
	if test "$PKG" = "preinstallimagesource:" ; then
	    PREINSTALL_IMAGE_SOURCE="$SRC"
	    continue
	fi
	if test "$PKG" = "runscripts:" ; then
	    RUNSCRIPTS_SEEN=true
	    PACKAGES_TO_RUNSCRIPTS=$SRC
	    continue
	fi
	if test "$PKG" = "dist:" ; then
	    GUESSED_DIST=$SRC
	    continue
	fi
	if test "$PKG" = "rpmid:" ; then
	    echo "${SRC#*:}" > $BUILD_ROOT/.init_b_cache/rpms/${SRC%%:*}.id
	    continue
	fi
	if test "$PKG" != "${PKG%:}"; then
	    echo "Warning: ignoring unsupported tag '$PKG'" >&2
	    continue
	fi
	if test "$SRC" = "preinstallimage" ; then
	    PACKAGES_FROM_PREINSTALLIMAGE="$PACKAGES_FROM_PREINSTALLIMAGE $PKG"
	    PACKAGES_TO_INSTALL="$PACKAGES_TO_INSTALL $PKG"
	    continue
	fi
	PACKAGES_TO_INSTALL="$PACKAGES_TO_INSTALL $PKG"
	if test "${SRC#/}" = "$SRC" ; then
	    case "$SRC" in
		zypp://* | http://* | https://* | ftp://* | ftps://*)
		    echo "$PKG $SRC" >>$BUILD_ROOT/.init_b_cache/rpmlist.download
		    continue
		    ;;
		*)
		    echo "unsupported url for '$PKG': $SRC" >&2
		    cleanup_and_exit 1
		    ;;
	    esac
	fi
	SRCSUF=${SRC/%.pkg.tar.?z/.arch}
	ln -s "$SRC" "$BUILD_ROOT/.init_b_cache/rpms/$PKG.${SRCSUF##*.}"
    done < $RPMLIST

    PACKAGES_TO_ALL="$PACKAGES_TO_INSTALL"
    PACKAGES_TO_AVAILABLE="$PACKAGES_TO_INSTALL"

    # subtract noinstall packages from PACKAGES_TO_INSTALL
    if test -n "$PACKAGES_TO_NOINSTALL" ; then
        settest=" $PACKAGES_TO_NOINSTALL "
	PACKAGES_TO_INSTALL=
	for PKG in $PACKAGES_TO_ALL ; do
	    test "$settest" = "${settest/ $PKG /}" && PACKAGES_TO_INSTALL="$PACKAGES_TO_INSTALL $PKG"
	done
    fi
    # subtract installonly packages from PACKAGES_TO_AVAILABLE
    if test -n "$PACKAGES_TO_INSTALLONLY" ; then
        settest=" $PACKAGES_TO_INSTALLONLY "
	PACKAGES_TO_AVAILABLE=
	for PKG in $PACKAGES_TO_ALL ; do
	    test "$settest" = "${settest/ $PKG /}" && PACKAGES_TO_AVAILABLE="$PACKAGES_TO_AVAILABLE $PKG"
	done
    fi

    # check if we really can use cached versions for packages on the download list
    if test -s $BUILD_ROOT/.init_b_cache/rpmlist.download ; then
	echo "calculating packages to download..."
	rm -f $BUILD_ROOT/.init_b_cache/rpmlist.download2
        while read PKG SRC ; do
	    cachepkg="${SRC##*/}"
	    cachepkg="${cachepkg/%.pkg.tar.?z/.arch}"
	    if test "$SRC" != "${SRC#zypp://}" ; then
		# for zypp packages also look in the zypp cache
		cachedir="/var/cache/zypp/packages/${SRC#zypp://}"
		cachedir="${cachedir%/*}"
		if can_reuse_cached_package "$cachedir/$cachepkg" ; then
		    SRCSUF=${SRC/%.pkg.tar.?z/.arch}
		    ln -s "$cachedir/$cachepkg" "$BUILD_ROOT/.init_b_cache/rpms/$PKG.${SRCSUF##*.}"
		    continue
		fi
	    fi
	    cachedir="$(getcachedir "$SRC")"
	    if can_reuse_cached_package "$cachedir/$cachepkg" ; then
		SRCSUF=${SRC/%.pkg.tar.?z/.arch}
		ln -s "$cachedir/$cachepkg" "$BUILD_ROOT/.init_b_cache/rpms/$PKG.${SRCSUF##*.}"
		continue
	    fi
	    # not found in cache or cache has different package
	    rm -f "$cachedir/$cachepkg"
	    echo "$PKG $SRC" >>$BUILD_ROOT/.init_b_cache/rpmlist.download2
	done < $BUILD_ROOT/.init_b_cache/rpmlist.download
	rm -f $BUILD_ROOT/.init_b_cache/rpmlist.download
	test -s $BUILD_ROOT/.init_b_cache/rpmlist.download2 && mv $BUILD_ROOT/.init_b_cache/rpmlist.download2 $BUILD_ROOT/.init_b_cache/rpmlist.download
    fi

    # now do the download of missing packages
    if test -s $BUILD_ROOT/.init_b_cache/rpmlist.download ; then
        PACKAGES_TO_DOWNLOAD=`cat ${RPMLIST}.download|awk '{print $2}'`
        progress_setup PACKAGES_TO_DOWNLOAD
        while read PKG SRC ; do
            progress_step PACKAGES_TO_DOWNLOAD
            downloadpkg "$SRC"
	    # downloadpkg modified $SRC, so it has a right name for use
	    SRCSUF=${SRC/%.pkg.tar.?z/.arch}
	    ln -s "$SRC" "$BUILD_ROOT/.init_b_cache/rpms/$PKG.${SRCSUF##*.}"
        done < $BUILD_ROOT/.init_b_cache/rpmlist.download
        rm -f $BUILD_ROOT/.init_b_cache/rpmlist.download
        echo
    fi

    # compatibility...
    test -z "$RUNSCRIPTS_SEEN" && PACKAGES_TO_RUNSCRIPTS="$PACKAGES_TO_PREINSTALL"

    echo "$GUESSED_DIST" > $BUILD_ROOT/.guessed_dist
    test -n "$BUILD_DIST" || BUILD_DIST="$GUESSED_DIST"

    pkg_set_type

    if test -n "$PREINSTALL_IMAGE" ; then
	for PKG in $PACKAGES_FROM_PREINSTALLIMAGE ; do
	    # touch the file so that the copying works
	    touch $BUILD_ROOT/.init_b_cache/rpms/"$PKG.$PSUF"
	done
    fi

fi

#
# test if we need to preinstall
#
if test ! -e $BUILD_ROOT/installed-pkg -a ! -e $BUILD_ROOT/.build/init_buildsystem.data ; then
    mkdir -p $BUILD_ROOT/etc || cleanup_and_exit 1
    mkdir -p $BUILD_ROOT/proc || cleanup_and_exit 1
    test -f $BUILD_ROOT/etc/HOSTNAME || hostname -f > $BUILD_ROOT/etc/HOSTNAME
    for PKG in $PACKAGES_TO_RUNSCRIPTS ; do
	: > $BUILD_ROOT/.init_b_cache/scripts/$PKG.run
    done
    PACKAGES_TO_PREINSTALL_FILTERED="$PACKAGES_TO_PREINSTALL"
    PACKAGES_TO_VMINSTALL_FILTERED="$PACKAGES_TO_VMINSTALL"
    rm -f "$BUILD_ROOT/.preinstall_image"/*
    if test -n "$PREINSTALL_IMAGE" ; then
	preinstall_image "$PREINSTALL_IMAGE" "$PREINSTALL_IMAGE_SOURCE"
	PACKAGES_TO_PREINSTALL_FILTERED=`preinstall_image_filter $PACKAGES_TO_PREINSTALL_FILTERED`
	PACKAGES_TO_VMINSTALL_FILTERED=`preinstall_image_filter $PACKAGES_TO_VMINSTALL_FILTERED`
    fi
    PACKAGES_TO_PREINSTALL_FILTERED=`reorder $PACKAGES_TO_PREINSTALL_FILTERED`
    progress_setup PACKAGES_TO_PREINSTALL_FILTERED
    for PKG in $PACKAGES_TO_PREINSTALL_FILTERED ; do
	progress_step PACKAGES_TO_PREINSTALL_FILTERED
	preinstall ${PKG##*/}
    done
    echo
    if test -n "$PREPARE_VM" ; then
        PACKAGES_TO_VMINSTALL_FILTERED=`reorder $PACKAGES_TO_VMINSTALL_FILTERED`
	progress_setup PACKAGES_TO_VMINSTALL_FILTERED
	for PKG in $PACKAGES_TO_VMINSTALL_FILTERED ; do
	    progress_step PACKAGES_TO_VMINSTALL_FILTERED
	    preinstall ${PKG##*/}
	done
    fi
    # for reorder
    check_exit
    if test -w /root ; then
	test -c $BUILD_ROOT/dev/null || create_devs
    fi
    test -e $BUILD_ROOT/etc/fstab || touch $BUILD_ROOT/etc/fstab
    test ! -e $BUILD_ROOT/etc/ld.so.conf -a -e $BUILD_ROOT/etc/ld.so.conf.in && cp $BUILD_ROOT/etc/ld.so.conf.in $BUILD_ROOT/etc/ld.so.conf
    if test -z "$PREPARE_VM" ; then
	run_pkg_scripts
	pkg_initdb
	touch $BUILD_ROOT/.init_b_cache/preinstall_finished
    fi
    # mark as preinstalled no longer needed
    rm -rf "$BUILD_ROOT/installed-pkg"
    mkdir -p "$BUILD_ROOT/installed-pkg"
fi

if test -n "$PREPARE_VM" ; then
    echo "copying packages..."
    for PKG in $PACKAGES_TO_ALL ; do
	rm -f $BUILD_ROOT/.init_b_cache/$PKG.$PSUF
	cp $BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF $BUILD_ROOT/.init_b_cache/$PKG.$PSUF || cleanup_and_exit 1
	ln -s -f ../$PKG.$PSUF $BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF
	check_exit
    done
    # alreadyinstalled check will not work, but we have to live with that...
    echo -n 'reordering...'
    PACKAGES_TO_INSTALL=`reorder $PACKAGES_TO_INSTALL`
    check_exit
    echo 'done'
    Q="'\''"
    echo "PACKAGES_TO_INSTALL='${PACKAGES_TO_INSTALL//"'"/$Q}'" > $BUILD_ROOT/.build/init_buildsystem.data
    echo "PACKAGES_TO_RUNSCRIPTS='${PACKAGES_TO_RUNSCRIPTS//"'"/$Q}'" >> $BUILD_ROOT/.build/init_buildsystem.data
    # needed for continuation in xen/kvm with rpm-x86
    echo "PACKAGES_TO_PREINSTALL='${PACKAGES_TO_PREINSTALL//"'"/$Q}'" >> $BUILD_ROOT/.build/init_buildsystem.data
    echo "PACKAGES_TO_AVAILABLE='${PACKAGES_TO_AVAILABLE//"'"/$Q}'" >> $BUILD_ROOT/.build/init_buildsystem.data
    echo "PSUF='$PSUF'" >> $BUILD_ROOT/.build/init_buildsystem.data
    rm -f $BUILD_IS_RUNNING
    cleanup_and_exit 0
fi


mkdir -p $BUILD_ROOT/proc
mkdir -p $BUILD_ROOT/dev/pts
mount -n -tproc none $BUILD_ROOT/proc 2>/dev/null || true
mount -n -tdevpts -omode=0620,gid=5 none $BUILD_ROOT/dev/pts 2>/dev/null || true

#
# create .build.binaries directory if requested
#
rm -rf "$BUILD_ROOT/.build.binaries"
if test -n "$CREATE_BUILD_BINARIES" ; then
    echo "creating .build.binaries directory..."
    mkdir -p "$BUILD_ROOT/.build.binaries"
    for PKG in $PACKAGES_TO_AVAILABLE ; do
	test -L "$BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF" || continue
	LPKG=`readlink -f "$BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF"`
	ln "$LPKG" "$BUILD_ROOT/.build.binaries/$PKG.$PSUF" 2>/dev/null
	test -f "$BUILD_ROOT/.build.binaries/$PKG.$PSUF" && continue
	cp "$LPKG" "$BUILD_ROOT/.build.binaries/$PKG.$PSUF"
	check_exit
    done
fi

#
# reorder packages (already done in vm continuation)
#
if ! test -e $BUILD_ROOT/.build/init_buildsystem.data ; then
    echo -n 'reordering...'
    PACKAGES_TO_INSTALL=`reorder $PACKAGES_TO_INSTALL`
    check_exit
    echo 'done'
fi

#
# get list and ids of already installed packages
#
mkdir -p $BUILD_ROOT/.init_b_cache/alreadyinstalled
listinstalled --root "$BUILD_ROOT" --type "$PSUF" --extraname | (
    while read id name buildid; do
	echo "$buildid" > "$BUILD_ROOT/.init_b_cache/alreadyinstalled/$name"
    done
)

# do pre-installation work
pkg_prepare

#
# delete all packages we don't want
#
mkdir -p $BUILD_ROOT/.init_b_cache/todelete
for PKG in $BUILD_ROOT/.init_b_cache/alreadyinstalled/* ; do
    PKG=${PKG##*/}
    test "$PKG" = "*" && continue
    ln $BUILD_ROOT/.init_b_cache/alreadyinstalled/$PKG $BUILD_ROOT/.init_b_cache/todelete/$PKG
done
for PKG in $PACKAGES_TO_INSTALL; do
    rm -f $BUILD_ROOT/.init_b_cache/todelete/$PKG
done
for PKG in $BUILD_ROOT/.init_b_cache/todelete/* ; do
    PKG=${PKG##*/}
    test "$PKG" = "*" && continue
    echo "deleting $PKG"
    pkg_erase
    check_exit
done
rm -rf "$BUILD_ROOT/.init_b_cache/todelete"

rm -rf "$BUILD_ROOT/.init_b_cache/preinstalls"
mkdir -p "$BUILD_ROOT/.init_b_cache/preinstalls"
for PKG in $PACKAGES_TO_PREINSTALL; do
    touch "$BUILD_ROOT/.init_b_cache/preinstalls/$PKG"
done

rm -rf "$BUILD_ROOT/installed-pkg"
mkdir -p "$BUILD_ROOT/installed-pkg"

test -x $BUILD_ROOT/sbin/ldconfig && chroot $BUILD_ROOT /sbin/ldconfig 2>&1

MAIN_LIST="$PACKAGES_TO_INSTALL"
progress_setup MAIN_LIST
for PKG in $MAIN_LIST ; do
    test -f $BUILD_ROOT/installed-pkg/$PKG && continue
    progress_step MAIN_LIST

    if test -e "$BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF" -a ! -s "$BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF" ; then
	# preinstallimage package, make sure it's in the image
	if ! test -e $BUILD_ROOT/.preinstall_image/$PKG ; then
	    echo "Package $PKG is missing from the preinstall image"
	    cleanup_and_exit 1
	fi
	read PKG_HDRMD5 PKGID < $BUILD_ROOT/.preinstall_image/$PKG
	echo "preinstalled ${PKGID%% *}"
	echo "$PKGID" > $BUILD_ROOT/installed-pkg/$PKG
	continue
    fi

    # get the hdrmd5 if we want to create a preinstall image
    PKG_HDRMD5=
    if test -d $BUILD_ROOT/.preinstall_image -a ! -e $BUILD_ROOT/.preinstall_image/$PKG ; then
	PKG_HDRMD5=`perl -I$BUILD_DIR -MBuild -e 'print Build::queryhdrmd5($ARGV[0])' $BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF`
	test -n "$PKG_HDRMD5" || cleanup_and_exit 1
    fi

    test -L $BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF || continue

    # check if we can keep an already installed package
    if test "$VERIFY_BUILD_SYSTEM" != true -a -f $BUILD_ROOT/.init_b_cache/rpms/$PKG.id -a -f $BUILD_ROOT/.init_b_cache/alreadyinstalled/$PKG ; then
	read PKGID < $BUILD_ROOT/.init_b_cache/rpms/$PKG.id
	read OLDPKGID < $BUILD_ROOT/.init_b_cache/alreadyinstalled/$PKG
	if test "$PKGID" = "$OLDPKGID" ; then
	    #echo "keeping ${PKGID%% *}"
	    rm -f $BUILD_ROOT/.init_b_cache/$PKG.$PSUF
	    echo "$PKGID" > $BUILD_ROOT/installed-pkg/$PKG
	    test -n "$PKG_HDRMD5" && echo "$PKG_HDRMD5 $PKGID" > $BUILD_ROOT/.preinstall_image/$PKG
	    continue
	fi
    fi

    PKGID=$(perl -I$BUILD_DIR -MBuild -e Build::showquery "$BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF" buildid)

    if test -f $BUILD_ROOT/.init_b_cache/alreadyinstalled/$PKG ; then
	read OLDPKGID < $BUILD_ROOT/.init_b_cache/alreadyinstalled/$PKG
	if test "$PKGID" != "$OLDPKGID" ; then
	    echo "deleting unwanted ${OLDPKGID%% *}"
	    pkg_erase
	else
	    if test "$VERIFY_BUILD_SYSTEM" != true || pkg_verify_installed ; then
		#echo "keeping ${PKGID%% *}"
		echo "$PKGID" > $BUILD_ROOT/installed-pkg/$PKG
		test -n "$PKG_HDRMD5" && echo "$PKG_HDRMD5 $PKGID" > $BUILD_ROOT/.preinstall_image/$PKG
		continue
	    fi
	    echo "deleting incomplete ${OLDPKGID%% *}"
	    pkg_erase
	fi
	if test -e "$BUILD_ROOT/.init_b_cache/preinstalls/$PKG" ; then
	    preinstall "$PKG"
	fi
	check_exit
    fi
    
    if pkg_cumulate ; then
	echo "cumulate ${PKGID%% *}"
	continue
    fi
    
    # install the package
    echo "installing ${PKGID%% *}"
    if ! test "$BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF" -ef "$BUILD_ROOT/.init_b_cache/$PKG.$PSUF" ; then
	rm -f $BUILD_ROOT/.init_b_cache/$PKG.$PSUF
	cp $BUILD_ROOT/.init_b_cache/rpms/$PKG.$PSUF $BUILD_ROOT/.init_b_cache/$PKG.$PSUF || cleanup_and_exit 1
    fi
    pkg_install
    check_exit
    rm -f $BUILD_ROOT/.init_b_cache/$PKG.$PSUF
    echo "$PKGID" > $BUILD_ROOT/installed-pkg/$PKG
    test -n "$PKG_HDRMD5" && echo "$PKG_HDRMD5 $PKGID" > $BUILD_ROOT/.preinstall_image/$PKG

done

# do post-installation work
pkg_finalize

# devices can vanish if devs got uninstalled
test -c $BUILD_ROOT/dev/null || create_devs

cd $BUILD_ROOT || cleanup_and_exit 1

#
# setup /etc/mtab
#
rm -f $BUILD_ROOT/etc/mtab
cp /proc/mounts $BUILD_ROOT/etc/mtab
chmod 644 $BUILD_ROOT/etc/mtab

#
# make sure, that our nis is not present in the chroot system
#
test -e $BUILD_ROOT/etc/nsswitch.conf && {
    echo "removing nis flags from $BUILD_ROOT/etc/nsswitch.conf..."
    cat $BUILD_ROOT/etc/nsswitch.conf | sed -e"s:nis::g" > $BUILD_ROOT/etc/nsswitch.conf.tmp
    mv $BUILD_ROOT/etc/nsswitch.conf.tmp $BUILD_ROOT/etc/nsswitch.conf
}

#
# create some default directories and files
#
for DIR in /usr/share/doc/packages \
	   /usr/X11R6/include/X11/pixmaps \
	   /usr/X11R6/include/X11/bitmaps ; do
    mkdir -p $BUILD_ROOT/$DIR
done
for FILE in /var/run/utmp /var/log/wtmp /etc/fstab ; do
    mkdir -p $BUILD_ROOT/${FILE%/*}
    touch $BUILD_ROOT/$FILE
done

echo now finalizing build dir...
if test -x $BUILD_ROOT/sbin/ldconfig ; then
	CHROOT_RETURN="`chroot $BUILD_ROOT /sbin/ldconfig 2>&1`"
	case "$CHROOT_RETURN" in
	    *warning:*)
		chroot $BUILD_ROOT /sbin/ldconfig
		echo
		echo chroot $BUILD_ROOT /sbin/ldconfig
		echo
		echo "$CHROOT_RETURN"
		echo
		echo "Problem with ldconfig.  It's better to reinit the build system..."
		echo
		cleanup_and_exit 1
		;;
	esac
fi

if test -x $BUILD_ROOT/usr/sbin/Check && ! grep -q "/usr/sbin/Check is obsolete" $BUILD_ROOT/usr/sbin/Check ; then
    chroot $BUILD_ROOT /usr/sbin/Check
fi

mkdir -p $BUILD_ROOT/var/adm/packages
touch $BUILD_ROOT/var/adm/packages

if test -x $BUILD_ROOT/sbin/SuSEconfig ; then
    if grep norestarts $BUILD_ROOT/sbin/SuSEconfig > /dev/null ; then
	chroot $BUILD_ROOT /sbin/SuSEconfig --norestarts --force
    else
	chroot $BUILD_ROOT /sbin/SuSEconfig --force
    fi
fi

if test -x $BUILD_ROOT/usr/X11R6/bin/switch2mesasoft ; then
    chroot $BUILD_ROOT /usr/X11R6/bin/switch2mesasoft
fi

for PROG in /usr/bin/TeX/texhash /usr/bin/texhash ; do
    test -x $BUILD_ROOT/$PROG && \
	chroot $BUILD_ROOT bash -c ". /etc/profile ; $PROG"
done

if test -e $BUILD_ROOT/usr/share/zoneinfo/UTC ; then
    for PROG in /usr/sbin/zic /usr/bin/zic /bin/zic /sbin/zic ; do
        test -x $BUILD_ROOT/$PROG  && chroot $BUILD_ROOT bash -c "$PROG -l \$(readlink -f /usr/share/zoneinfo/UTC)"
    done
fi

test -e $BUILD_ROOT/.build/init_buildsystem.data || HOST=`hostname`
test -e $BUILD_ROOT/etc/hosts || echo "127.0.0.1 localhost" > $BUILD_ROOT/etc/hosts
if ! grep -F "127.0.0.1 $HOST" $BUILD_ROOT/etc/hosts > /dev/null ; then
    # this makes a reverse lookup on 127.0.0.1 return the host name,
    # which is bad, but 127.0.0.2 does not work on all unix systems
    echo "127.0.0.1 $HOST" > $BUILD_ROOT/etc/hosts.new
    test -f $BUILD_ROOT/etc/hosts && cat $BUILD_ROOT/etc/hosts >> $BUILD_ROOT/etc/hosts.new
    mv $BUILD_ROOT/etc/hosts.new $BUILD_ROOT/etc/hosts
fi

# XXX: still needed?
if test -x $BUILD_ROOT/bin/rpm -a ! -f $BUILD_ROOT/var/lib/rpm/packages.rpm -a ! -f $BUILD_ROOT/var/lib/rpm/Packages ; then
    pkg_initdb_rpm
    chroot $BUILD_ROOT rpm -q --whatprovides rpm >/dev/null 2>&1	# create provides index
fi

rm -f $BUILD_ROOT/.rpmmacros $BUILD_ROOT/root/.rpmmacros
rm -rf "$BUILD_ROOT/.init_b_cache"
rm -f $BUILD_IS_RUNNING
rm -f $TMPFILE

cleanup_and_exit 0

# vim: set tabstop=8 softtabstop=4 shiftwidth=4 noexpandtab: