base-files: restore status of system-services after sysupgrade

Restore the status of the system-services after sysupgrade.
Create a file with the status of all known services and keep it during
upgrade. After upgrade run a uci-default script to restore every
single service.
The list of the service status will be stored in etc/backup folder also
and formated as:
/etc/init.d/<service> {enable|disable}

When upgrading with an generic image all system services are enabled by
default which is usually not expected and can cause trouble.
The default behavior can be flipped with the "-s" option of sysupgrade.

Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
[disable per default, enabled via -s]
Signed-off-by: Paul Spooren <mail@aparcar.org>

diff --git a/package/base-files/files/etc/uci-defaults/14_restore-services-state b/package/base-files/files/etc/uci-defaults/14_restore-services-state
new file mode 100644 (file)
index 0000000..d0085f3
--- /dev/null
+++ b/package/base-files/files/etc/uci-defaults/14_restore-services-state
@@ -0,0 +1,3 @@
+SERVICE_STATUS=/etc/backup/service_status.txt
+
+[ -e ${SERVICE_STATUS} ] && . ${SERVICE_STATUS}

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 7e0a00e13b8ee4be7163936fd01a7beff0ce5c99..bbd29d29a8d16a977a7d51a50de6ed63872a4761 100755 (executable)
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -15,6 +15,7 @@ export SAVE_OVERLAY_PATH=
 export SAVE_PARTITIONS=1
 export SAVE_INSTALLED_PKGS=0
 export SKIP_UNCHANGED=0
+export SAVE_SERVICE_STATUS=0
 export CONF_IMAGE=
 export CONF_BACKUP_LIST=0
 export CONF_BACKUP=
@@ -35,6 +36,7 @@ while [ -n "$1" ]; do
                -c) export SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/etc;;
                -o) export SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/;;
                -p) export SAVE_PARTITIONS=0;;
+               -s) export SAVE_SERVICE_STATUS=1;;
                -k) export SAVE_INSTALLED_PKGS=1;;
                -u) export SKIP_UNCHANGED=1;;
                -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
@@ -57,13 +59,14 @@ export CONFFILES=/tmp/sysupgrade.conffiles
 export CONF_TAR=/tmp/sysupgrade.tgz
 export ETCBACKUP_DIR=/etc/backup
 export INSTALLED_PACKAGES=${ETCBACKUP_DIR}/installed_packages.txt
+export SERVICE_STATUS=${ETCBACKUP_DIR}/service_status.txt
 
 IMAGE="$1"
 
 [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 -o $HELP -gt 0 ] && {
        cat <<EOF
 Usage: $0 [<upgrade-option>...] <image file or URL>
-       $0 [-q] [-i] [-c] [-u] [-o] [-k] <backup-command> <file>
+       $0 [-q] [-i] [-c] [-u] [-o] [-s] [-k] <backup-command> <file>
 
 upgrade-option:
        -f <config>  restore configuration from .tar.gz (file or url)
@@ -74,6 +77,7 @@ upgrade-option:
        -u           skip from backup files that are equal to those in /rom
        -n           do not save configuration over reflash
        -p           do not attempt to restore the partition table after flash.
+       -s           do not attempt to restore the status of the services.
        -k           include in backup a list of current installed packages at
                     $INSTALLED_PACKAGES
        -T | --test
@@ -230,8 +234,7 @@ do_save_conffiles() {
        run_hooks "$CONFFILES" $sysupgrade_init_conffiles
        ask_bool 0 "Edit config file list" && vi "$CONFFILES"
 
-       if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
-               echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
+       if [ "$SAVE_INSTALLED_PKGS" -eq 1 ] || [ "$SAVE_SERVICE_STATUS" -eq 1 ]; then
                mkdir -p "$ETCBACKUP_DIR"
                # Avoid touching filesystem on each backup
                RAMFS="$(mktemp -d -t sysupgrade.XXXXXX)"
@@ -242,13 +245,28 @@ do_save_conffiles() {
                                ask_bool 0 "Abort" && exit
                        }
 
-               # Format: pkg-name<TAB>{rom,overlay,unkown}
-               # 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/' > ${INSTALLED_PACKAGES}
+               if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
+                       echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
+                       # Format: pkg-name<TAB>{rom,overlay,unkown}
+                       # 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/' > ${INSTALLED_PACKAGES}
+               fi
+
+               if [ "$SAVE_SERVICE_STATUS" -eq 1 ]; then
+                       echo "${SERVICE_STATUS}" >> "$CONFFILES"
+                       # Format: /etc/init.d/servicename {enable,disable}
+                       rm -f ${SERVICE_STATUS}
+                       for service in /etc/init.d/* ; do \
+                               ${service} enabled && \
+                                       echo >> ${SERVICE_STATUS} "$service" "enable" || \
+                                       echo >> ${SERVICE_STATUS} "$service" "disable" \
+                               ; \
+                       done
+               fi
        fi
 
        v "Saving config files..."