[OpenWrt-Devel] [PATCH v2 4/4] base-files: add sysupgrade -k to save list of pkgs

[Philip Prindeville]

Inline

> On Apr 4, 2018, at 5:28 PM, Luiz Angelo Daros de Luca <luizluca at gmail.com> wrote:
> 
> When '-k' is used, sysupgrade inserts into backup a new file
> /etc/sysupgrade.installed which contains pkgname and
> origin (rom, overlay, unknown).
> 
> It's maily used to reinstall all extra packages:
> 
> # opkg update
> # grep "\toverlay" etc/sysupgrade.installed | cut -f1 | xargs opkg install
> # rm etc/sysupgrade.installed
> 
> Signed-off-by: Luiz Angelo Daros de Luca <luizluca at gmail.com>
> ---
> package/base-files/files/sbin/sysupgrade | 30 ++++++++++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
> 
> diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
> index 01a942bac6..c5067a757b 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
> @@ -31,6 +32,7 @@ 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;;
> @@ -50,6 +52,7 @@ done
> 
> export CONFFILES=/tmp/sysupgrade.conffiles
> export CONF_TAR=/tmp/sysupgrade.tgz
> +export INSTALLED_PACKAGES=/etc/sysupgrade.installed
> 
> IMAGE="$1"
> 
> @@ -67,6 +70,8 @@ upgrade-option:
> 	-u           skip from backup files that are equals 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
> @@ -203,6 +208,15 @@ fi
> 
> include /lib/upgrade
> 
> +targz_append() {
> +	local tar="$1"
> +	local append_tar="$2"
> +	(	gunzip -c "$tar" | head -c -1024;
> +		gunzip -c $append_tar
> +	) | gzip > $tar.new


This seems a bit fragile…  Isn’t there a better way to do this?


> +	mv -f $tar.new $tar
> +}
> +
> do_save_conffiles() {
> 	local conf_tar="$1"
> 
> @@ -219,6 +233,22 @@ do_save_conffiles() {
> 	[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
> 	tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
> 
> +	if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
> +		mkdir -p /tmp/etc
> +		cd /tmp/
> +
> +		# 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/' > ${INSTALLED_PACKAGES:1}
> +
> +		tar c${TAR_V}zf sysupgrade.installed.packages.tgz ${INSTALLED_PACKAGES:1}
> +		targz_append "$conf_tar" sysupgrade.installed.packages.tgz
> +		rm -f sysupgrade.installed.packages.tgz ${INSTALLED_PACKAGES:1}
> +	fi
> 	rm -f "$CONFFILES"
> }
> 
> --
> 2.16.3
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