[settings] Reject attempts to change a network device's bus ID

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/net/netdev_settings.c b/src/net/netdev_settings.c
index 2ff4ad3e3053d71d1ab38d0bc2a2bdf36863d21f..220ffa9a8bbfc876885c5c02210e31daed717f60 100644 (file)
--- a/src/net/netdev_settings.c
+++ b/src/net/netdev_settings.c
@@ -81,6 +81,8 @@ static int netdev_store ( struct settings *settings, struct setting *setting,
                memcpy ( netdev->ll_addr, data, len );
                return 0;
        }
+       if ( setting_cmp ( setting, &busid_setting ) == 0 )
+               return -ENOTSUP;
 
        return generic_settings_store ( settings, setting, data, len );
 }