use loop for waiting for active network device

faiproject · Aug 4, 2015 · 09eafb9 · 09eafb9
1 parent 299b256
commit 09eafb9
Showing 1 changed file with 13 additions and 6 deletions.
diff --git a/lib/get-boot-info b/lib/get-boot-info
@@ -64,12 +64,19 @@ setnet() {
 
     # get network parameters
     # first get first active network device
-    local dev dummy
-    dev=$(ip ad show up | awk -F': ' '/^[0-9]/ && ! / lo:/ {print $2;exit}')
-    if [ -z "$dev" ]; then
-        sleep 3 # if interface needs some time to come up
-        dev=$(ip ad show up | awk -F': ' '/^[0-9]/ && ! / lo:/ {print $2;exit}')
-    fi
+    local dev dummy n
+
+    n=0
+    until [ $n = 7 ]; do
+	dev=$(ip ad show up | awk -F': ' '/^[0-9]/ && ! / lo:/ {print $2;exit}')
+	if [ -z "$dev" ]; then
+            sleep 2 # if interface needs some time to come up
+	else
+	    break
+	fi
+	n=$(($n + 1))
+    done
+
     read IPADDR NETMASK BROADCAST dummy<<<$(ifdata -p $dev)
     GATEWAYS=$(ip route | awk '/^default/ {print $3}')