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Merge "rpm-distro: ensure we selinux relabel underlying directories"

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Zuul 2019-08-30 04:31:00 +00:00 committed by Gerrit Code Review
commit f4698b5864
1 changed files with 32 additions and 3 deletions
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35
diskimage_builder/elements/rpm-distro/cleanup.d/99-selinux-fixfiles-restore
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@ -70,9 +70,38 @@ for MOUNTPOINT in "${SPLIT_MOUNTS[@]}"; do
echo "*** SELinux enabled and kauditd not found, suggesting auditing support is disabled in the host kernel. setfiles will fail without this, please enable and rebuild"
exit 1
fi
sudo ${_runcon} chroot ${TARGET_ROOT} \
/usr/sbin/setfiles -F ${_dash_m} \
/etc/selinux/targeted/contexts/files/file_contexts ${MOUNTPOINT}
if [[ ${MOUNTPOINT} == "/" ]]; then
# If you don't label /dev, /proc and /sys (the actual,
# on-disk directory in the image) correctly, it will have
# bad effects when things like systemd try to do things
# like make network or process namespaces. This generally
# leads to obscure and hard-to-debug failures; [1] has
# plenty of examples.
#
# But right now, /{dev,proc,sys} are mounted! With the
# extant block-device code, we do not have a point to
# break in when these are unmounted, but before we've
# unmounted everything. So we do a hack; for the root
# directory, we bind mount the target so we see the
# underlying directories, and then run setfiles on that.
#
# XXX: we might be able to uncondtionally do this for all
# mountpoints? leaving well enough alone for now...
#
# [1] https://bugzilla.redhat.com/show_bug.cgi?id=1663040
TMP_BIND_MOUNT=$(mktemp -d)
sudo mount --bind ${TARGET_ROOT} ${TMP_BIND_MOUNT}
sudo ${_runcon} chroot ${TMP_BIND_MOUNT} \
/usr/sbin/setfiles -F ${_dash_m} \
/etc/selinux/targeted/contexts/files/file_contexts /
sudo umount ${TMP_BIND_MOUNT}
sudo rmdir ${TMP_BIND_MOUNT}
else
sudo ${_runcon} chroot ${TARGET_ROOT} \
/usr/sbin/setfiles -F ${_dash_m} \
/etc/selinux/targeted/contexts/files/file_contexts ${MOUNTPOINT}
fi
fi
done