procd: Allow to configure default respawn retry count

Extend /etc/config/system with a parameter to set the
default respawn retry for procd launched services that
have respawn enabled.

	config service
        	option respawn_retry -1

All services that don't specify specific respawn parameters
will get their defaults added by procd.sh. If respawn_retry
is specified in /etc/config/system the default retry limit
will be set to this value by procd.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>

SVN-Revision: 48915

package/system/procd/files/procd.sh

@@ -316,6 +316,16 @@ _procd_append_param() {
 }
 
 _procd_close_instance() {
+	local respawn_vals
+	if json_select respawn ; then
+		json_get_values respawn_vals
+		if [ -z "$respawn_vals" ]; then
+			local respawn_retry=$(uci_get system.@service[0].respawn_retry)
+			_procd_add_array_data 3600 5 ${respawn_retry:-5}
+		fi
+		json_select ..
+	fi
+
 	json_close_object
 }