From 5cb1dce542a6a13fd250e9ef9c8290568c610c39 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 17 Aug 2018 20:49:53 -0300 Subject: [PATCH] base-files: add sysupgrade -k to save list of pkgs When '-k' is used, sysupgrade inserts into backup a new file /etc/backup/installed_packages.txt which contains pkgname and origin (rom, overlay, unknown) without touching rootfs. It's mainly used to reinstall all extra packages: # opkg update # grep "\toverlay" /etc/backup/installed_packages.txt | cut -f1 | xargs -r opkg install # rm /etc/backup/installed_packages.txt Signed-off-by: Luiz Angelo Daros de Luca --- package/base-files/files/sbin/sysupgrade | 36 +++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade index 55c323d001..58b613b5a0 100755 --- a/package/base-files/files/sbin/sysupgrade +++ b/package/base-files/files/sbin/sysupgrade @@ -11,6 +11,7 @@ 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 @@ -20,6 +21,7 @@ export NEED_IMAGE= export HELP=0 export FORCE=0 export TEST=0 +export UMOUNT_ETCBACKUP_DIR=0 # parse options while [ -n "$1" ]; do @@ -31,6 +33,7 @@ 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;; + -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="$2" NEED_IMAGE=1; shift;; @@ -50,13 +53,15 @@ done export CONFFILES=/tmp/sysupgrade.conffiles export CONF_TAR=/tmp/sysupgrade.tgz +export ETCBACKUP_DIR=/etc/backup +export INSTALLED_PACKAGES=${ETCBACKUP_DIR}/installed_packages.txt IMAGE="$1" [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 -o $HELP -gt 0 ] && { cat <...] - $0 [-q] [-i] [-c] [-u] [-o] + $0 [-q] [-i] [-c] [-u] [-o] [-k] upgrade-option: -f restore configuration from .tar.gz (file or url) @@ -67,6 +72,8 @@ 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. + -k include in backup a list of current installed packages at + $INSTALLED_PACKAGES -T | --test Verify image and config .tar.gz but do not actually flash. -F | --force @@ -174,6 +181,7 @@ add_overlayfiles() { -e '\,^/etc/board.json$,d' \ -e '\,/[^/]*-opkg$,d' \ -e '\,^/etc/urandom.seed$,d' \ + -e "\,^$INSTALLED_PACKAGES$,d" \ -e '\,^/usr/lib/opkg/.*,d' \ ) | grep -v -x -F -f $packagesfiles > "$file" @@ -218,6 +226,27 @@ 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}" >> "$CONFFILES" + mkdir -p "$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{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/' > ${INSTALLED_PACKAGES} + fi + v "Saving config files..." [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V="" tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null @@ -227,11 +256,16 @@ do_save_conffiles() { exit 1 fi + [ "$UMOUNT_ETCBACKUP_DIR" -eq 1 ] && { + umount "$ETCBACKUP_DIR" + rm -rf "$RAMFS" + } rm -f "$CONFFILES" } if [ $CONF_BACKUP_LIST -eq 1 ]; then run_hooks "$CONFFILES" $sysupgrade_init_conffiles + [ "$SAVE_INSTALLED_PKGS" -eq 1 ] && echo ${INSTALLED_PACKAGES} >> "$CONFFILES" cat "$CONFFILES" rm -f "$CONFFILES" exit 0 -- 2.30.2