merging from the 5.5 repo to local branch.

3 files changed, 24 insertions, 7 deletions

diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 6afc20141e1..31257777b27 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -7476,8 +7476,10 @@ static int fix_paths(void)
   (void) my_load_path(mysql_home,mysql_home,""); // Resolve current dir
   (void) my_load_path(mysql_real_data_home,mysql_real_data_home,mysql_home);
   (void) my_load_path(pidfile_name, pidfile_name_ptr, mysql_real_data_home);
-  (void) my_load_path(opt_plugin_dir, opt_plugin_dir_ptr ? opt_plugin_dir_ptr :
-                                      get_relative_path(PLUGINDIR), mysql_home);
+
+  convert_dirname(opt_plugin_dir, opt_plugin_dir_ptr ? opt_plugin_dir_ptr : 
+                                  get_relative_path(PLUGINDIR), NullS);
+  (void) my_load_path(opt_plugin_dir, opt_plugin_dir, mysql_home);
   opt_plugin_dir_ptr= opt_plugin_dir;
 
   my_realpath(mysql_unpacked_real_data_home, mysql_real_data_home, MYF(0));
diff --git a/sql/sql_plugin.cc b/sql/sql_plugin.cc
index 2b801b65a09..4a2d450f373 100644
--- a/sql/sql_plugin.cc
+++ b/sql/sql_plugin.cc
@@ -463,18 +463,22 @@ static st_plugin_dl *plugin_dl_add(const LEX_STRING *dl, int report)
   dlpathlen=
     strxnmov(dlpath, sizeof(dlpath) - 1, opt_plugin_dir, "/", dl->str, NullS) -
     dlpath;
+  (void) unpack_filename(dlpath, dlpath);
   plugin_dl.ref_count= 1;
   /* Open new dll handle */
   if (!(plugin_dl.handle= dlopen(dlpath, RTLD_NOW)))
   {
-    const char *errmsg=dlerror();
+    const char *errmsg;
+    int error_number= dlopen_errno;
+    DLERROR_GENERATE(errmsg, error_number);
+
     if (!strncmp(dlpath, errmsg, dlpathlen))
     { // if errmsg starts from dlpath, trim this prefix.
       errmsg+=dlpathlen;
       if (*errmsg == ':') errmsg++;
       if (*errmsg == ' ') errmsg++;
     }
-    report_error(report, ER_CANT_OPEN_LIBRARY, dlpath, errno, errmsg);
+    report_error(report, ER_CANT_OPEN_LIBRARY, dlpath, error_number, errmsg);
     DBUG_RETURN(0);
   }
   /* Determine interface version */
diff --git a/sql/sql_udf.cc b/sql/sql_udf.cc
index bf2de4b39bb..44595ace453 100644
--- a/sql/sql_udf.cc
+++ b/sql/sql_udf.cc
@@ -221,10 +221,15 @@ void udf_init()
       char dlpath[FN_REFLEN];
       strxnmov(dlpath, sizeof(dlpath) - 1, opt_plugin_dir, "/", tmp->dl,
                NullS);
+      (void) unpack_filename(dlpath, dlpath);
       if (!(dl= dlopen(dlpath, RTLD_NOW)))
       {
+	const char *errmsg;
+	int error_number= dlopen_errno;
+	DLERROR_GENERATE(errmsg, error_number);
+
 	/* Print warning to log */
-        sql_print_error(ER(ER_CANT_OPEN_LIBRARY), tmp->dl, errno, dlerror());
+        sql_print_error(ER(ER_CANT_OPEN_LIBRARY), tmp->dl, error_number, errmsg);
 	/* Keep the udf in the hash so that we can remove it later */
 	continue;
       }
@@ -469,12 +474,18 @@ int mysql_create_function(THD *thd,udf_func *udf)
   {
     char dlpath[FN_REFLEN];
     strxnmov(dlpath, sizeof(dlpath) - 1, opt_plugin_dir, "/", udf->dl, NullS);
+    (void) unpack_filename(dlpath, dlpath);
+
     if (!(dl = dlopen(dlpath, RTLD_NOW)))
     {
+      const char *errmsg;
+      int error_number= dlopen_errno;
+      DLERROR_GENERATE(errmsg, error_number);
+
       DBUG_PRINT("error",("dlopen of %s failed, error: %d (%s)",
-                          udf->dl, errno, dlerror()));
+                          udf->dl, error_number, errmsg));
       my_error(ER_CANT_OPEN_LIBRARY, MYF(0),
-               udf->dl, errno, dlerror());
+               udf->dl, error_number, errmsg);
       goto err;
     }
     new_dl=1;