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authorTony Ambardar <itugrok@yahoo.com>2018-03-02 19:32:24 -0800
committerJo-Philipp Wich <jo@mein.io>2018-09-24 18:58:00 +0200
commit4097ab6a975902b170dd7f7ac6c8025e5f32ef8d (patch)
treece94d3b301e61110bf965178c718d88645fa7868 /package/system/usign
parentd3b43f49acb38cbe364da8735c9617427edd3d81 (diff)
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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 <itugrok@yahoo.com>
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