create_backup_archive() {
local conf_tar="$1"
- local umount_etcbackup_dir=0
-
[ "$(rootfs_type)" = "tmpfs" ] && {
echo "Cannot save config while running from ramdisk." >&2
ask_bool 0 "Abort" && exit
run_hooks "$CONFFILES" $sysupgrade_init_conffiles
ask_bool 0 "Edit config file list" && vi "$CONFFILES"
- if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
- echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
- mkdir -p "$ETCBACKUP_DIR"
- # Avoid touching filesystem on each backup
- RAMFS="$(mktemp -d -t sysupgrade.XXXXXX)"
- mkdir -p "$RAMFS/upper" "$RAMFS/work"
- mount -t overlay overlay -o lowerdir=$ETCBACKUP_DIR,upperdir=$RAMFS/upper,workdir=$RAMFS/work $ETCBACKUP_DIR &&
- umount_etcbackup_dir=1 || {
- echo "Cannot mount '$ETCBACKUP_DIR' as tmpfs to avoid touching disk while saving the list of installed packages." >&2
- ask_bool 0 "Abort" && exit
- }
-
- # Format: pkg-name<TAB>{rom,overlay,unknown}
- # rom is used for pkgs in /rom, even if updated later
- find /usr/lib/opkg/info -name "*.control" \( \
- \( -exec test -f /rom/{} \; -exec echo {} rom \; \) -o \
- \( -exec test -f /overlay/upper/{} \; -exec echo {} overlay \; \) -o \
- \( -exec echo {} unknown \; \) \
- \) | sed -e 's,.*/,,;s/\.control /\t/' > ${INSTALLED_PACKAGES}
- fi
-
v "Saving config files..."
[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
sed -i -e 's,^/,,' "$CONFFILES"
- tar c${TAR_V}zf "$conf_tar" -C / -T "$CONFFILES"
+ {
+ # Part of archive with installed packages info
+ if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
+ # Format: pkg-name<TAB>{rom,overlay,unknown}
+ # rom is used for pkgs in /rom, even if updated later
+ tar_print_member "$INSTALLED_PACKAGES" "$(find /usr/lib/opkg/info -name "*.control" \( \
+ \( -exec test -f /rom/{} \; -exec echo {} rom \; \) -o \
+ \( -exec test -f /overlay/upper/{} \; -exec echo {} overlay \; \) -o \
+ \( -exec echo {} unknown \; \) \
+ \) | sed -e 's,.*/,,;s/\.control /\t/')"
+ fi
+
+ # Rest of archive with config files and ending padding
+ tar c${TAR_V} -C / -T "$CONFFILES"
+ } | gzip > "$conf_tar"
+
local err=$?
if [ "$err" -ne 0 ]; then
echo "Failed to create the configuration backup."
rm -f "$conf_tar"
fi
- [ "$umount_etcbackup_dir" -eq 1 ] && {
- umount "$ETCBACKUP_DIR"
- rm -rf "$RAMFS"
- }
rm -f "$CONFFILES"
return "$err"