. /lib/functions/system.sh
. /usr/share/libubox/jshn.sh
-# initialize defaults
+# File-local constants
+CONF_TAR=/tmp/sysupgrade.tgz
+ETCBACKUP_DIR=/etc/backup
+INSTALLED_PACKAGES=${ETCBACKUP_DIR}/installed_packages.txt
+COMMAND=/lib/upgrade/do_stage2
+
+# File-local globals
+SAVE_OVERLAY=0
+SAVE_OVERLAY_PATH=
+SAVE_PARTITIONS=1
+SAVE_INSTALLED_PKGS=0
+SKIP_UNCHANGED=0
+CONF_IMAGE=
+CONF_BACKUP_LIST=0
+CONF_BACKUP=
+CONF_RESTORE=
+NEED_IMAGE=
+HELP=0
+TEST=0
+
+# Globals accessed in other files
export MTD_ARGS=""
export MTD_CONFIG_ARGS=""
export INTERACTIVE=0
export VERBOSE=1
export SAVE_CONFIG=1
-export SAVE_OVERLAY=0
-export SAVE_OVERLAY_PATH=
-export SAVE_PARTITIONS=1
-export SAVE_INSTALLED_PKGS=0
-export SKIP_UNCHANGED=0
-export CONF_IMAGE=
-export CONF_BACKUP_LIST=0
-export CONF_BACKUP=
-export CONF_RESTORE=
export IGNORE_MINOR_COMPAT=0
-export NEED_IMAGE=
-export HELP=0
export FORCE=0
-export TEST=0
+export CONFFILES=/tmp/sysupgrade.conffiles
# parse options
while [ -n "$1" ]; do
-v) export VERBOSE="$(($VERBOSE + 1))";;
-q) export VERBOSE="$(($VERBOSE - 1))";;
-n) export SAVE_CONFIG=0;;
- -c) export SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/etc;;
- -o) export SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/;;
- -p) export SAVE_PARTITIONS=0;;
- -k) export SAVE_INSTALLED_PKGS=1;;
- -u) export SKIP_UNCHANGED=1;;
- -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
- -r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
- -l|--list-backup) export CONF_BACKUP_LIST=1;;
- -f) export CONF_IMAGE="$2"; shift;;
+ -c) SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/etc;;
+ -o) SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/;;
+ -p) SAVE_PARTITIONS=0;;
+ -k) SAVE_INSTALLED_PKGS=1;;
+ -u) SKIP_UNCHANGED=1;;
+ -b|--create-backup) CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
+ -r|--restore-backup) CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
+ -l|--list-backup) CONF_BACKUP_LIST=1;;
+ -f) CONF_IMAGE="$2"; shift;;
-F|--force) export FORCE=1;;
- -T|--test) export TEST=1;;
- -h|--help) export HELP=1; break;;
+ -T|--test) TEST=1;;
+ -h|--help) HELP=1; break;;
--ignore-minor-compat-version) export IGNORE_MINOR_COMPAT=1;;
-*)
echo "Invalid option: $1" >&2
shift;
done
-export CONFFILES=/tmp/sysupgrade.conffiles
-export CONF_TAR=/tmp/sysupgrade.tgz
-export ETCBACKUP_DIR=/etc/backup
-export INSTALLED_PACKAGES=${ETCBACKUP_DIR}/installed_packages.txt
-
-IMAGE="$1"
-
-[ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 -o $HELP -gt 0 ] && {
+print_help() {
cat <<EOF
Usage: $0 [<upgrade-option>...] <image file or URL>
$0 [-q] [-i] [-c] [-u] [-o] [-k] <backup-command> <file>
sysupgrade -b. Does not create a backup file.
EOF
- exit 1
}
+IMAGE="$1"
+
+if [ $HELP -gt 0 ]; then
+ print_help
+ exit 0
+fi
+
+if [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 ]; then
+ print_help
+ exit 1
+fi
+
[ -n "$IMAGE" -a -n "$NEED_IMAGE" ] && {
cat <<-EOF
-b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
if [ $SAVE_OVERLAY = 1 ]; then
[ ! -d /overlay/upper/etc ] && {
- echo "Cannot find '/overlay/upper/etc', required for '-c'" >&2
+ echo "Cannot find '/overlay/upper/etc', required for '-c' or '-o'" >&2
exit 1
}
sysupgrade_init_conffiles="add_overlayfiles"
do_save_conffiles() {
local conf_tar="$1"
- local tmp
- local dir
+
+ local umount_etcbackup_dir=0
[ "$(rootfs_type)" = "tmpfs" ] && {
echo "Cannot save config while running from ramdisk." >&2
run_hooks "$CONFFILES" $sysupgrade_init_conffiles
ask_bool 0 "Edit config file list" && vi "$CONFFILES"
- # Mount root directory with temporary overlay on top of it.
- # This allows including extra (temporary) files in backup archive
- # without messing actual rootfs.
- tmp="$(mktemp -d -t overlay.XXXXXX)"
- mkdir -p "$tmp/upper" "$tmp/work" "$tmp/backup"
- dir="$tmp/backup"
- if ! mount -t overlay overlay -o lowerdir=/,upperdir="$tmp/upper",workdir="$tmp/work" "$dir"; then
- echo "Cannot mount backup overlay to $dir." >&2
- ask_bool 0 "Abort" && exit
- dir=""
- fi
-
if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
- mkdir -p "$dir/$ETCBACKUP_DIR"
-
- # Format: pkg-name<TAB>{rom,overlay,unkown}
+ 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/' > "$dir/${INSTALLED_PACKAGES}"
+ \) | 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 "$conf_tar" -C "${dir:-/}" -T "$CONFFILES"
+ tar c${TAR_V}zf "$conf_tar" -C / -T "$CONFFILES"
local err=$?
if [ "$err" -ne 0 ]; then
echo "Failed to create the configuration backup."
rm -f "$conf_tar"
fi
- umount "$dir"
- rm -rf "$tmp"
-
+ [ "$umount_etcbackup_dir" -eq 1 ] && {
+ umount "$ETCBACKUP_DIR"
+ rm -rf "$RAMFS"
+ }
rm -f "$CONFFILES"
return "$err"
install_bin /sbin/upgraded
v "Commencing upgrade. Closing all shell sessions."
-COMMAND='/lib/upgrade/do_stage2'
-
if [ -n "$FAILSAFE" ]; then
printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp/sysupgrade
lock -u /tmp/.failsafe
projects / openwrt / openwrt.git / blobdiff