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authorKevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>2016-05-05 12:34:49 +0100
committerJo-Philipp Wich <jo@mein.io>2016-05-18 22:17:33 +0200
commit382779e009af7c1c688fbd98adf71fb19ce66254 (patch)
treeb4db3035f3b9a6d1cf6ac48ad53d5c23e37b9149
parentc19b7aaac5f861a20be9a7ddcce3832f6ba4a899 (diff)
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base-files: sysfixtime exclude dnsmasq.time
dnsmasq maintains dnsmasq.time across reboots and uses it as a means of determining if current time is good enough to validate dnssec time stamps. By including /etc/dnsmasq.time as a time source for sysfixtime, the mechanism was effectively defeated because time was set to the last time that dnsmasq considered current even though that time is in the past. Since that time is out of date, dns(sec) resolution would fail thus defeating any ntp based mechanisms for setting the clock correctly. In theory the process is defeated by any files in /etc that are newer than /etc/dnsmasq.time however dnsmasq now updates the file's timestamp on process TERM so hopefully /etc/dnsmasq.time is the latest file timestamp in /etc as part of LEDE shutdown/reboot. Either way, including /etc/dnsmasq.time as a time source for sysfixtime is not helpful.
-rwxr-xr-xpackage/base-files/files/etc/init.d/sysfixtime11
1 files changed, 10 insertions, 1 deletions
diff --git a/package/base-files/files/etc/init.d/sysfixtime b/package/base-files/files/etc/init.d/sysfixtime
index ab946f6518..1354a586ce 100755
--- a/package/base-files/files/etc/init.d/sysfixtime
+++ b/package/base-files/files/etc/init.d/sysfixtime
@@ -10,8 +10,8 @@ HWCLOCK=/sbin/hwclock
boot() {
start && exit 0
+ local maxtime="$(maxtime)"
local curtime="$(date +%s)"
- local maxtime="$(find /etc -type f -exec date -r {} +%s \; | sort -nr | head -n1)"
[ $curtime -lt $maxtime ] && date -s @$maxtime
}
@@ -23,3 +23,12 @@ stop() {
[ -e "$RTC_DEV" ] && [ -e "$HWCLOCK" ] && $HWCLOCK -w -f $RTC_DEV && \
logger -t sysfixtime "saved '$(date)' to $RTC_DEV"
}
+
+maxtime() {
+ local file newest
+
+ for file in $( find /etc -type f ! -path /etc/dnsmasq.time ) ; do
+ [ -z "$newest" -o "$newest" -ot "$file"] && newest=$file
+ done
+ [ "$newest" ] && date -r "$newest" +%s
+}