From 484117b47830b6dcebcfc19177dad8fb460c7ebe Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Fri, 2 Mar 2018 19:32:24 -0800 Subject: [PATCH] base-files: fix postinstall uci-defaults removal Commit 7f694582 introduced a bug where default_postinst() often fails to remove a uci-defaults script after application, leaving it to run again after a reboot. (Note: commit 7f694582 also introduced FS#1021, now fixed by 73c745f6) The subtle problem arises from the shell logical chain: [ -f "$i" ] && . "$i" && rm -f "$i" Most uci-defaults scripts contain a terminal 'exit 0' statement which, when sourced, results in the logic chain exiting before executing 'rm -f'. This was observed while testing upgrades of 'luci-app-sqm'. The solution is to wrap the shell sourcing in a subshell relative to the command 'rm -f': ( [ -f "$i" ] && . "$i" ) && rm -f "$i" Revert to using 'grep' to prefilter the list of entries from the control file, which yields the full path of uci-defaults scripts. This allows keeping the existence check, directory change and script sourcing inside the subshell, with the script removal correctly outside. This approach avoids adding a second subshell only around the "." (source) command. The change also preserves the fix FS#1021, since the full path is used to source the script, which is POSIX-portable irrespective of PATH variable or reference to the CWD. Run Tested on: LEDE 17.01.4 running ar71xx, while tracing installation of package luci-app-sqm with its associated /etc/uci-defaults/luci-sqm file. Signed-off-by: Tony Ambardar (backported from 4097ab6a975902b170dd7f7ac6c8025e5f32ef8d) --- package/base-files/files/lib/functions.sh | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh index 51ca8d5a0c..6858dc827a 100755 --- a/package/base-files/files/lib/functions.sh +++ b/package/base-files/files/lib/functions.sh @@ -243,10 +243,9 @@ default_postinst() { if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then . /lib/functions/system.sh [ -d /tmp/.uci ] || mkdir -p /tmp/.uci - for i in $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do ( - cd /etc/uci-defaults - [ -f "$i" ] && . ./"$i" && rm -f "$i" - ) done + for i in $(grep -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"); do + ( [ -f "$i" ] && cd "$(dirname $i)" && . "$i" ) && rm -f "$i" + done uci commit fi -- 2.25.1