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| -rwxr-xr-x | bin/pbuilder-user-mode-linux | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/bin/pbuilder-user-mode-linux b/bin/pbuilder-user-mode-linux new file mode 100755 index 0000000..48ce023 --- /dev/null +++ b/bin/pbuilder-user-mode-linux @@ -0,0 +1,247 @@ +#! /bin/bash +# pbuilder user-mode-linux hack. +# +# pbuilder -- personal Debian package builder +# Copyright (C) 2001-2007 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_trap () { + 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 + log "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_trap exit sighup + 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 <<EOF > ${INSIDE_PBUILDER} +#! /bin/bash + +### +### BEGIN CODE EXECUTED INSIDE User-mode-linux +### +### note that ${VARIABLE}s are evaluated outside of user-mode-linux. +### while \${VARIABLE}s are evaluated inside of user-mode-linux. + +${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?" >&2 + exit 1 +fi +mount --bind ${UML_CHROOT_MOUNTPOINT}/dev /dev + +# mount /lib/modules on the hostfs +kernel_modules=\$(sed -ne 's\$.*/lib/modules.*hostfs.*defaults,ro,\([^[:space:]]*\).*\$\1\$p' ${UML_CHROOT_MOUNTPOINT}/etc/fstab) +if [ -n "\${kernel_modules}" ] ; then + echo " -> Mount /lib/modules on the host \${kernel_modules}" + mount -t hostfs -o ro,\${kernel_modules} hostfs /lib/modules +fi + +export LOGNAME="${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 ${UML_CHROOT_MOUNTPOINT}/tmp +fi + +if [ "${UML_IP}" != 'dhcp' ]; then + cat <<IP > ${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 +fi + +cat <<SHELL > ${UML_CHROOT_MOUNTPOINT}/tmp/chrootshell +#! /bin/bash +${UML_DEBUGMODE} +# the shell executed inside chroot inside UML + echo Starting network inside the chroot + mount -t proc /proc /proc + /etc/init.d/networking stop + /etc/init.d/networking start + umount /proc +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 + +if [ -n "\${kernel_modules}" ] ; then + umount /lib/modules +fi +umount /dev +umount ${UML_CHROOT_MOUNTPOINT} +/sbin/halt -d -f + +### +### END CODE EXECUTED INSIDE User-mode-linux +### +EOF + + chmod a+x ${INSIDE_PBUILDER} + + if [ $( id -u ) = 0 ]; then + echo "W: You are uid=0. Don't run UML as uid=0, it's not supported." >&2 + fi + + echo Invoking: "linux mem=${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} |