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iup: wait_for_default_gateway

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This commit is contained in:
Alex Oprea 2017-02-01 19:39:25 +01:00
parent bf43dcd54a
commit dcdb147f2f
1 changed files with 34 additions and 0 deletions
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34
iup/files/sbin/iup
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@ -444,6 +444,35 @@ parse_dhcp_options()
fi
}
# wait_for_default_gateway to become reachable
# return 0 if the default gateway is reachable
# return 1 if the default gateway is not reachable after $wait_time
wait_for_default_gateway()
{
local gateway
local wait_time=60
local wait_interval=5
while [ true ] ; do
gateway=""
network_flush_cache
network_get_gateway gateway wan #true
if ping -q -w 1 -c 1 $gateway >/dev/null 2>&1 ; then
[ "$wait_time" -lt "60" ] && v "Default gateway $gateway is reachable"
sleep $wait_interval
return 0
fi
v "Waiting for default gateway. Countdown $wait_time seconds"
sleep $wait_interval
wait_time=$((wait_time - wait_interval))
[ "$wait_time" -le "0" ] && break # timer expired
done
return 1 # default gateway not reachable
}
main()
{
@ -466,6 +495,11 @@ main()
shift;
done
if ! wait_for_default_gateway ; then
v "Default gateway is not reachable. Aborting iup."
exit 1
fi
if [ -f $IUPMD5 ]; then
v "File $IUPMD5 exists, nothing to do"
else