base-files: Fix config_generate when there are no switch VLANs or ports configured...

The json_select call fails when there are no roles or ports objects in board.json. "json_select .." must not be executed after failing.

This fixes for example LEDs not being set up in /etc/config/system.

Signed-off-by: Vittorio Gambaletta <openwrt@vittgam.net>

diff --git a/package/base-files/files/bin/config_generate b/package/base-files/files/bin/config_generate
index 03d1a36259ec848004fd620ae310e90730a74d48..345393ca9cf92c6878e4d7e97953d1dff5045982 100755 (executable)
--- a/package/base-files/files/bin/config_generate
+++ b/package/base-files/files/bin/config_generate
@@ -143,55 +143,59 @@ generate_switch_vlans_ports() {
        # autogenerate vlans
        #
 
-       json_get_keys roles roles
-       json_select roles
+       if json_is_a roles array; then
+               json_get_keys roles roles
+               json_select roles
 
-       for role in $roles; do
-               json_select "$role"
-                       json_get_vars ports
-               json_select ..
+               for role in $roles; do
+                       json_select "$role"
+                               json_get_vars ports
+                       json_select ..
 
-               uci -q batch <<-EOF
-                       add network switch_vlan
-                       set network.@switch_vlan[-1].device='$switch'
-                       set network.@switch_vlan[-1].vlan='$role'
-                       set network.@switch_vlan[-1].ports='$ports'
-               EOF
-       done
+                       uci -q batch <<-EOF
+                               add network switch_vlan
+                               set network.@switch_vlan[-1].device='$switch'
+                               set network.@switch_vlan[-1].vlan='$role'
+                               set network.@switch_vlan[-1].ports='$ports'
+                       EOF
+               done
 
-       json_select ..
+               json_select ..
+       fi
 
 
        #
        # write port specific settings
        #
 
-       json_get_keys ports ports
-       json_select ports
+       if json_is_a ports array; then
+               json_get_keys ports ports
+               json_select ports
+
+               for port in $ports; do
+                       json_select "$port"
+                               json_get_vars num
+
+                               if json_is_a attr object; then
+                                       json_get_keys attr attr
+                                       json_select attr
+                                               uci -q batch <<-EOF
+                                                       add network switch_port
+                                                       set network.@switch_port[-1].device='$switch'
+                                                       set network.@switch_port[-1].port=$num
+                                               EOF
+
+                                               for attr in $attr; do
+                                                       json_get_var val "$attr"
+                                                       uci -q set network.@switch_port[-1].$attr="$val"
+                                               done
+                                       json_select ..
+                               fi
+                       json_select ..
+               done
 
-       for port in $ports; do
-               json_select "$port"
-                       json_get_vars num
-
-                       if json_is_a attr object; then
-                               json_get_keys attr attr
-                               json_select attr
-                                       uci -q batch <<-EOF
-                                               add network switch_port
-                                               set network.@switch_port[-1].device='$switch'
-                                               set network.@switch_port[-1].port=$num
-                                       EOF
-
-                                       for attr in $attr; do
-                                               json_get_var val "$attr"
-                                               uci -q set network.@switch_port[-1].$attr="$val"
-                                       done
-                               json_select ..
-                       fi
                json_select ..
-       done
-
-       json_select ..
+       fi
 }
 
 generate_switch() {