base-files: allow users to delect debug level during boot

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38909 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/utils/busybox/files/cron

@@ -6,10 +6,24 @@ START=50
 USE_PROCD=1
 PROG=/usr/sbin/crond
 
+validate_cron_section() {
+	uci_validate_section system system "${1}" \
+		'cronloglevel:uinteger'
+}
+
 start_service () {
 	[ -z "$(ls /etc/crontabs/)" ] && return 1
 
 	loglevel=$(uci_get "system.@system[0].cronloglevel")
+
+	[ -z "${loglevel}" ] || {
+		/sbin/validate_data uinteger "${loglevel}"
+		[ "$?" -eq 0 ] || {
+			echo "validation failed"
+			return 1
+		}
+	}
+
 	mkdir -p /var/spool/cron
 	ln -s /etc/crontabs /var/spool/cron/ 2>/dev/null
 
@@ -17,3 +31,8 @@ start_service () {
 	procd_set_param command "$PROG" -f -c /etc/crontabs -l ${loglevel:-5}
 	procd_close_instance
 }
+
+service_triggers()
+{
+	procd_add_validation validate_cron_section
+}