+ [ "${DEBUG}" = "Yes" ] && cp ${include_list} ${persistent_backing}/${persistence_list}.${device_name}
+ while read source dest options # < ${include_list}
+ do
+ if echo ${source} | grep -qe "^[[:space:]]*#"
+ then
+ # skipping commented line
+ continue
+ fi
+
+ if echo ${dest} | grep -qe "^[^/]"
+ then
+ options="${dest}"
+ dest="${source}"
+ elif [ -z "${dest}" ]
+ then
+ dest="${source}"
+ fi
+
+ if echo ${dest} | grep -qe "^/\+$\|^/\+live\(/.*\)\?$"
+ then
+ # mounting on / or /live could cause trouble
+ log_warning_msg "Skipping unsafe custom mount on ${dest}"
+ continue
+ fi
+
+ for opt in $(echo ${options} | tr ',' ' ');
+ do
+ case "${opt}" in
+ "linkfiles")
+ ;;
+ *)
+ log_warning_msg "Skipping custom mount with unkown option: ${opt}"
+ continue 2
+ ;;
+ esac
+ done
+
+ # FIXME: handle case: we already have /a/b in $bindings added from current $device, but now we find /a -- /a should replace /a/b in $bindings.
+ # FIXME: handle case: we have /a in $bindings from current $device, now we find /a/b, so we skip /a/b
+
+ # ensure that no multiple-/ occur in paths
+ full_source="$(echo ${backing}/${source}/ | sed -e 's|/\+|/|g')"
+ full_dest="$(echo ${rootmnt}/${dest}/ | sed -e 's|/\+|/|g')"
+ device_used="yes"
+ if echo ${options} | grep -qe "\<linkfiles\>";
+ then
+ echo "${full_source} ${full_dest} ${options}" >> ${links}
+ else
+ echo "${full_source} ${full_dest} ${options}" >> ${bindings}
+ fi
+ done < ${include_list}
+
+ if [ -z "${device_used}" ]
+ then
+ # this device was not used for / earlier, or custom mount point now, so it's useless
+ umount "${backing}"
+ rmdir "${backing}"
+ fi
+ done
+
+ # We sort the list according to destination so we're sure
+ # that we won't hide a previous mount. We also ignore
+ # duplicate destinations in a more or less arbitrary way.
+ [ -e "${bindings}" ] && sort -k2 -sbu ${bindings} >> ${custom_mounts}
+ rm -f ${bindings}
+
+ # After all mounts are considered we add symlinks so they
+ # won't be hidden by some mount.
+ [ -e "${links}" ] && sort -k2 -sbu ${links} >> ${custom_mounts}
+ rm -f ${links}
+
+ [ "${DEBUG}" = "Yes" ] && cp ${custom_mounts} ${persistent_backing}
+
+ # Now we do the actual mounting (and symlinking)
+ while read source dest options # < ${custom_mounts}
+ do
+ local opt_linkfiles=""
+ for opt in $(echo ${options} | tr ',' ' ');
+ do
+ case "${opt}" in
+ "linkfiles")
+ opt_linkfiles="yes"
+ ;;
+ esac
+ done
+
+ if mountpoint -q "${dest}";
+ then
+ log_warning_msg "Skipping custom mount ${source} on ${dest}: destination is already a mount point"
+ continue
+ fi
+
+ # FIXME: we don't handle already existing non-directory files in the paths of both $source and $dest.
+
+ if [ ! -d "${dest}" ]
+ then
+ # if ${dest} is in /home/$user, try fixing proper ownership
+ # FIXME: this should really be handled by live-config since we don't know for sure which uid a certain user has until then
+ if echo ${dest} | grep -qe "^${rootmnt}/*home/\+[^/]\+"
+ then
+ path="/"
+ for dir in $(echo ${dest} | sed -e 's|/\+| |g')
+ do
+ path=${path}/${dir}
+ if [ ! -e ${path} ]
+ then
+ mkdir -p ${path}
+ # assume that the intended user is the first, which is usually the case
+ chown 1000:1000 ${path}
+ fi
+ done
+ else
+ mkdir -p ${dest}
+ fi
+ fi
+
+ # FIXME: could we instead only save the aufs-diff in the persistent media? implications? What about when there's changes in the live image?
+
+ # if ${source} doesn't exist on our persistent media we
+ # bootstrap it with $dest from the live filesystem.
+ # this both makes sense and is critical if we're
+ # dealing with /etc or other system dir.
+ if [ ! -d "${source}" ]
+ then
+ if [ -n "${PERSISTENT_READONLY}" ] || [ -n "${opt_linkfiles}" ]
+ then
+ continue
+ fi
+ # ensure that $dest is not copied *into* $source
+ mkdir -p "$(dirname ${source})"
+ cp -a "${dest}" "${source}"
+ fi
+
+ if [ -z "${PERSISTENT_READONLY}" ]
+ then
+ if [ -n "${opt_linkfiles}" ]
+ then
+ links_source="${source}"
+ links_dest="${dest}"
+ else
+ mount --bind "${source}" "${dest}"
+ fi
+ else
+ if [ -n "${opt_linkfiles}" ]
+ then
+ links_dest="${dest}"
+ dest="$(mktemp -d ${persistent_backing}/links_source-XXXXXX)"
+ links_source="${dest}"
+ fi
+ unionrw="$(echo ${dest} | sed -e "s|${rootmnt}|/cow/|")"
+ mkdir -p ${unionrw}
+ unionmountopts="noatime,${noxino_opt}dirs=${unionrw}=rw:${source}=${roopt}"
+ mount -t "${UNIONTYPE}" -o "${unionmountopts}" "${UNIONTYPE}" "${dest}"
+ fi
+
+ if [ -n "${opt_linkfiles}" ]
+ then
+ link_files "${links_source}" "${links_dest}" "${rootmnt}"
+ fi
+
+ PERSISTENCE_IS_ON="1"
+ export PERSISTENCE_IS_ON
+ done < ${custom_mounts}
+ rm -f ${bindings}