X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fplugin.c;h=9ecee5cf26f5fd1b2d421d0d69a3f6476a0815b0;hb=8b695cf6f4fe477a6d44bce39af371510cd90f14;hp=0f360c0f3eb5a0f952440483da19ec9ead4fd3fd;hpb=565c731a4353d1453b65dc9a4267e1f8e4740c06;p=collectd.git

diff --git a/src/plugin.c b/src/plugin.c
index 0f360c0f..9ecee5cf 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -1,6 +1,6 @@
 /**
  * collectd - src/plugin.c
- * Copyright (C) 2005-2010  Florian octo Forster
+ * Copyright (C) 2005-2011  Florian octo Forster
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -728,6 +728,17 @@ static int plugin_insert_read (read_func_t *rf)
 		}
 	}
 
+	le = llist_search (read_list, rf->rf_name);
+	if (le != NULL)
+	{
+		pthread_mutex_unlock (&read_lock);
+		WARNING ("The read function \"%s\" is already registered. "
+				"Check for duplicate \"LoadPlugin\" lines "
+				"in your configuration!",
+				rf->rf_name);
+		return (EINVAL);
+	}
+
 	le = llentry_create (rf->rf_name, rf);
 	if (le == NULL)
 	{
@@ -756,14 +767,13 @@ int plugin_register_read (const char *name,
 		int (*callback) (void))
 {
 	read_func_t *rf;
+	int status;
 
-	rf = (read_func_t *) malloc (sizeof (read_func_t));
+	rf = malloc (sizeof (*rf));
 	if (rf == NULL)
 	{
-		char errbuf[1024];
-		ERROR ("plugin_register_read: malloc failed: %s",
-				sstrerror (errno, errbuf, sizeof (errbuf)));
-		return (-1);
+		ERROR ("plugin_register_read: malloc failed.");
+		return (ENOMEM);
 	}
 
 	memset (rf, 0, sizeof (read_func_t));
@@ -777,7 +787,11 @@ int plugin_register_read (const char *name,
 	rf->rf_interval.tv_nsec = 0;
 	rf->rf_effective_interval = rf->rf_interval;
 
-	return (plugin_insert_read (rf));
+	status = plugin_insert_read (rf);
+	if (status != 0)
+		sfree (rf);
+
+	return (status);
 } /* int plugin_register_read */
 
 int plugin_register_complex_read (const char *group, const char *name,
@@ -786,12 +800,13 @@ int plugin_register_complex_read (const char *group, const char *name,
 		user_data_t *user_data)
 {
 	read_func_t *rf;
+	int status;
 
-	rf = (read_func_t *) malloc (sizeof (read_func_t));
+	rf = malloc (sizeof (*rf));
 	if (rf == NULL)
 	{
 		ERROR ("plugin_register_complex_read: malloc failed.");
-		return (-1);
+		return (ENOMEM);
 	}
 
 	memset (rf, 0, sizeof (read_func_t));
@@ -819,7 +834,11 @@ int plugin_register_complex_read (const char *group, const char *name,
 		rf->rf_udata = *user_data;
 	}
 
-	return (plugin_insert_read (rf));
+	status = plugin_insert_read (rf);
+	if (status != 0)
+		sfree (rf);
+
+	return (status);
 } /* int plugin_register_complex_read */
 
 int plugin_register_write (const char *name,