#! /bin/bash # pbuilder user-mode-linux hack. # # 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 # set -e function cleanup_function () { rm -f ${INSIDE_PBUILDER} ${EXTRACLEANUP} } . /usr/lib/pbuilder/pbuilder-loadconfig OPERATION="$1" shift; . /usr/lib/pbuilder/pbuilder-uml-checkparams function usecow () { PBUILDER_COWFILENAME="${BUILDPLACE}/$$.cow" PBUILDER_COW="${PBUILDER_COWFILENAME}," if ! touch "${PBUILDER_COWFILENAME}"; then echo "E: Cannot write-access to the COW file, check buildplace" exit 1; fi rm -f "${PBUILDER_COWFILENAME}" } function cleancow () { # clean the cow file rm -f "${PBUILDER_COWFILENAME}" } function operate_uml () { # opeartes on UML, and runs pbuilder $1 # use this script file to bootstrap the pbuilder inside the UML INSIDE_PBUILDER=$(tempfile) trap cleanup_function exit UML_CHROOT_MOUNTPOINT=/var/cache/pbuilder/pbuilder-mnt UML_CHROOT_BUILDRESULTMOUNTDIR=/var/cache/pbuilder/pbuilder-umlresult #The following script is ran inside UML as soon as it is started. cat < ${INSIDE_PBUILDER} #! /bin/bash ${UML_DEBUGMODE} mount -t proc /proc /proc mount -t tmpfs /tmp /tmp # create devices mount -t tmpfs tmpfs /dev mknod /dev/ubdb b 98 16 #if ! fsck -p /dev/ubdb; then # echo "W: Failed to fsck /dev/ubdb" #fi if ! mount -t ext2 /dev/ubdb ${UML_CHROOT_MOUNTPOINT}; then echo "E: Cannot mount /dev/ubdb, is UML root image accessible as current user?" exit 1 fi mount --bind ${UML_CHROOT_MOUNTPOINT}/dev /dev export LOGNAME="${LOGNAME}" export HOME="${HOME}" hostname "${UML_HOSTNAME}" if [ "${UML_MOUNT_TMPFS}" = "yes" ]; then mount -t tmpfs ${UML_CHROOT_MOUNTPOINT}/tmp ${UML_CHROOT_MOUNTPOINT}/tmp else # clean up tmp before playing with it. rm -rf ${UML_CHROOT_MOUNTPOINT}/tmp mkdir ${UML_CHROOT_MOUNTPOINT}/tmp chmod 1777 ${UML_CHROOT_MOUNTPOINT}/tmp fi cat < ${UML_CHROOT_MOUNTPOINT}/etc/network/interfaces auto lo iface lo inet loopback # The first network card - this entry was created during the Debian installation auto eth0 iface eth0 inet static address $UML_IP netmask $UML_NETMASK network $UML_NETWORK broadcast $UML_BROADCAST gateway $UML_GATEWAY IP cat < ${UML_CHROOT_MOUNTPOINT}/tmp/chrootshell #! /bin/bash ${UML_DEBUGMODE} # the shell executed inside chroot inside UML echo Starting network inside the chroot /etc/init.d/networking stop /etc/init.d/networking start SHELL chmod a+x ${UML_CHROOT_MOUNTPOINT}/tmp/chrootshell chroot ${UML_CHROOT_MOUNTPOINT} /tmp/chrootshell #some variables need to be set from outside values, possibly export PATH="$PATH" export TMPDIR=/tmp unset EXTRAOPT || true declare -a EXTRAOPT if [ -n "${UML_DISTRIBUTION}" ]; then EXTRAOPT[0]="--distribution" EXTRAOPT[1]="${UML_DISTRIBUTION}" fi if [ -z "${UML_BUILDRESULT}" ]; then BUILDRESULT= else echo " -> Mount build result dir outside UML [${UML_BUILDRESULT}] as [${UML_CHROOT_BUILDRESULTMOUNTDIR}]" BUILDRESULT=${UML_CHROOT_BUILDRESULTMOUNTDIR} mkdir -p ${UML_CHROOT_BUILDRESULTMOUNTDIR} || true mount -t hostfs none "${UML_CHROOT_BUILDRESULTMOUNTDIR}" -o "${UML_BUILDRESULT}" fi pbuilder "$1" ${UML_EXTRAOPT} \${EXTRAOPT[@]} --buildresult "\${BUILDRESULT}" --buildplace "${UML_CHROOT_MOUNTPOINT}" --internal-build-uml ${UML_DEBUGMODE:+--debug} ${BUILDING_DSC_FILE} ${UML_EXECUTE_EXTRAOPT} echo \$? > /proc/exitcode umount /dev umount ${UML_CHROOT_MOUNTPOINT} /sbin/halt -d -f EOF chmod a+x ${INSIDE_PBUILDER} if [ $( id -u ) = 0 ]; then echo "W: You are uid=0. Don't run UML as uid=0, it's not supported." fi echo Invoking: "linux mem=${UML_MEM} eth0=${MY_ETH0} con0=fd:0,fd:1 con=pty root=/dev/root rootflags=/ rootfstype=hostfs ubd1=${PBUILDER_COW}${PBUILDER_UML_IMAGE} init=${INSIDE_PBUILDER} rw" if linux mem=${UML_MEM} eth0=${MY_ETH0} con0=fd:0,fd:1 con=pty root=/dev/root rootflags=/ rootfstype=hostfs ubd1="${PBUILDER_COW}${PBUILDER_UML_IMAGE}" devfs=mount init=${INSIDE_PBUILDER} rw ; then UML_EXITCODE=$? echo " -> Successful exit from user-mode linux" else UML_EXITCODE=$? echo " -> Exit code ${UML_EXITCODE}" fi } BUILDING_DSC_FILE=$(readlink -f "$1") || true # ignore failure here EXTRACLEANUP= UML_EXITCODE=1 case "${OPERATION}" in build) usecow EXTRACLEANUP=cleancow operate_uml build ;; update) operate_uml update ;; login) if [ "${UML_LOGIN_NOCOW}" = "yes" ]; then echo " -> Not using COW filesystem for login session, modifications to this session will persist" else usecow EXTRACLEANUP=cleancow fi operate_uml login ;; execute) if [ "${UML_LOGIN_NOCOW}" = "yes" ]; then echo " -> Not using COW filesystem for login session, modifications to this session will persist" else usecow EXTRACLEANUP=cleancow fi shift; UML_EXECUTE_EXTRAOPT="${UML_EXECUTE_EXTRAOPT} $@" operate_uml execute ;; dumpconfig) echo " -> start dump outside of UML" echo " -> set" set; echo " -> env" env; echo " -> end dump outside of UML" usecow EXTRACLEANUP=cleancow operate_uml dumpconfig ;; create) if [ -n "${UML_DISTRIBUTION}" ]; then if [ ! -d ~/.pbuilder-user-mode-linux ]; then mkdir ~/.pbuilder-user-mode-linux fi sed "s/dist=.*/dist=${UML_DISTRIBUTION}/" /etc/rootstrap/rootstrap.conf > ~/.pbuilder-user-mode-linux/rootstrap.conf if [ -f rootstrap.conf ]; then sed "s/dist=.*/dist=${UML_DISTRIBUTION}/" rootstrap.conf > ~/.pbuilder-user-mode-linux/rootstrap.conf fi cd ~/.pbuilder-user-mode-linux fi rootstrap -s ${ROOTSTRAP_IMAGESIZE:=1000} ${PBUILDER_UML_IMAGE} operate_uml update ;; *) echo "Error: Unknown option [${OPERATION}] was specified " >&2 ;; esac exit ${UML_EXITCODE}