Rationalize plugin symbol error reporting

Change-Id: I64f2b2007f30fc1c6bd2990ba0d7ccbcd43cdb38
Signed-off-by: Dave Barach <dave@barachs.net>

3 files changed, 14 insertions, 5 deletions

diff --git a/src/vat/plugin.c b/src/vat/plugin.c
index 20de8c50b6f..b94c4fc30d0 100644
--- a/src/vat/plugin.c
+++ b/src/vat/plugin.c
@@ -40,14 +40,19 @@ load_one_plugin (plugin_main_t * pm, plugin_info_t * pi)
   if (handle == 0)
     {
       clib_warning ("%s", dlerror ());
-      return -1;
+      return 0;
     }
 
   pi->handle = handle;
 
   register_handle = dlsym (pi->handle, "vat_plugin_register");
   if (register_handle == 0)
-    return 0;
+    {
+      clib_warning ("%s: symbol vat_plugin_register not found", pi->name);
+      dlclose (handle);
+      return 0;
+    }
+
 
   fp = register_handle;
 
diff --git a/src/vlib/unix/plugin.c b/src/vlib/unix/plugin.c
index 058afcfcae0..a1df3b24b66 100644
--- a/src/vlib/unix/plugin.c
+++ b/src/vlib/unix/plugin.c
@@ -141,7 +141,7 @@ load_one_plugin (plugin_main_t * pm, plugin_info_t * pi, int from_early_init)
     {
       clib_warning ("%s", dlerror ());
       clib_warning ("Failed to load plugin '%s'", pi->name);
-      os_exit (1);
+      goto error;
     }
 
   pi->handle = handle;
diff --git a/src/vpp/api/plugin.c b/src/vpp/api/plugin.c
index e8b134173d8..95bdbe6cd7e 100644
--- a/src/vpp/api/plugin.c
+++ b/src/vpp/api/plugin.c
@@ -40,14 +40,18 @@ load_one_plugin (plugin_main_t * pm, plugin_info_t * pi)
   if (handle == 0)
     {
       clib_warning ("%s", dlerror ());
-      return -1;
+      return 0;
     }
 
   pi->handle = handle;
 
   register_handle = dlsym (pi->handle, "vat_plugin_register");
   if (register_handle == 0)
-    return 0;
+    {
+      clib_warning ("%s: symbol vat_plugin_register not found", pi->name);
+      dlclose (handle);
+      return 0;
+    }
 
   fp = register_handle;