DEVICE_BAK "/host/dev/variable_monitor"

1 files changed, 5 insertions, 1 deletions

diff --git a/source/ucli/ucli-lib.cc b/source/ucli/ucli-lib.cc
index 3536d1e..a329744 100644
--- a/source/ucli/ucli-lib.cc
+++ b/source/ucli/ucli-lib.cc
@@ -72,7 +72,11 @@ long diag_call_ioctl(unsigned long request, unsigned long arg) {
   fd = open(DEVICE, O_RDWR, 0);
   if (fd < 0) {
     printf("open %s error!\n", DEVICE);
-    return -EEXIST;
+    fd = open(DEVICE_BAK, O_RDWR, 0);
+    if (fd < 0){
+       printf("open %s error!\n", DEVICE_BAK);
+       return EEXIST;
+    }
   }
 
   ret = ioctl(fd, request, arg);