fix grammar in plugin loading error message

[collectd.git] / src / plugin.c

diff --git a/src/plugin.c b/src/plugin.c
index 9b7cb21..f4461b5 100644 (file)
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -306,7 +306,7 @@ static int plugin_load_file (char *file, uint32_t flags)
 
                ssnprintf (errbuf, sizeof (errbuf),
                                "lt_dlopen (\"%s\") failed: %s. "
-                               "The most common cause for this problem are "
+                               "The most common cause for this problem is "
                                "missing dependencies. Use ldd(1) to check "
                                "the dependencies of the plugin "
                                "/ shared object.",
@@ -852,7 +852,7 @@ int plugin_register_flush (const char *name,
                                (void *) callback, ud));
 } /* int plugin_register_flush */
 
-int plugin_register_shutdown (char *name,
+int plugin_register_shutdown (const char *name,
                int (*callback) (void))
 {
        return (create_register_callback (&list_shutdown, name,
@@ -1358,7 +1358,8 @@ int plugin_dispatch_values (value_list_t *vl)
        if ((vl == NULL) || (vl->type[0] == 0)
                        || (vl->values == NULL) || (vl->values_len < 1))
        {
-               ERROR ("plugin_dispatch_values: Invalid value list.");
+               ERROR ("plugin_dispatch_values: Invalid value list "
+                               "from plugin %s.", vl->plugin);
                return (-1);
        }
 
@@ -1522,6 +1523,52 @@ int plugin_dispatch_values (value_list_t *vl)
        return (0);
 } /* int plugin_dispatch_values */
 
+int plugin_dispatch_values_secure (const value_list_t *vl)
+{
+  value_list_t vl_copy;
+  int status;
+
+  if (vl == NULL)
+    return EINVAL;
+
+  memcpy (&vl_copy, vl, sizeof (vl_copy));
+
+  /* Write callbacks must not change the values and meta pointers, so we can
+   * savely skip copying those and make this more efficient. */
+  if ((pre_cache_chain == NULL) && (post_cache_chain == NULL))
+    return (plugin_dispatch_values (&vl_copy));
+
+  /* Set pointers to NULL, just to be on the save side. */
+  vl_copy.values = NULL;
+  vl_copy.meta = NULL;
+
+  vl_copy.values = malloc (sizeof (*vl_copy.values) * vl->values_len);
+  if (vl_copy.values == NULL)
+  {
+    ERROR ("plugin_dispatch_values_secure: malloc failed.");
+    return (ENOMEM);
+  }
+  memcpy (vl_copy.values, vl->values, sizeof (*vl_copy.values) * vl->values_len);
+
+  if (vl->meta != NULL)
+  {
+    vl_copy.meta = meta_data_clone (vl->meta);
+    if (vl_copy.meta == NULL)
+    {
+      ERROR ("plugin_dispatch_values_secure: meta_data_clone failed.");
+      free (vl_copy.values);
+      return (ENOMEM);
+    }
+  } /* if (vl->meta) */
+
+  status = plugin_dispatch_values (&vl_copy);
+
+  meta_data_destroy (vl_copy.meta);
+  free (vl_copy.values);
+
+  return (status);
+} /* int plugin_dispatch_values_secure */
+
 int plugin_dispatch_notification (const notification_t *notif)
 {
        llentry_t *le;