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MDEV-9566 Server code changes in preparation for mariabackup

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- Backup will  load encryption plugins outside of mysqld. Thus, do not
force loading MyISAM plugin in plugin_load.

- init_signals() will be used in backup,  make it global, not static.
This commit is contained in:
Vladislav Vaintroub
2017-04-18 17:20:55 +00:00
committed by Sergei Golubchik
parent ec68f764f6
commit f06ab0fc99
2 changed files with 21 additions and 15 deletions
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32
sql/sql_plugin.cc
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@ -1606,22 +1606,28 @@ int plugin_init(int *argc, char **argv, int flags)
}
}
/* First, we initialize only MyISAM - that should always succeed */
plugin_ptr= plugin_find_internal(&MyISAM, MYSQL_STORAGE_ENGINE_PLUGIN);
DBUG_ASSERT(plugin_ptr);
DBUG_ASSERT(plugin_ptr->load_option == PLUGIN_FORCE);
if (plugin_initialize(&tmp_root, plugin_ptr, argc, argv, false))
goto err_unlock;
/*
set the global default storage engine variable so that it will
not be null in any child thread.
First, we initialize only MyISAM - that should almost always succeed
(almost always, because plugins can be loaded outside of the server, too).
*/
global_system_variables.table_plugin=
intern_plugin_lock(NULL, plugin_int_to_ref(plugin_ptr));
DBUG_ASSERT(plugin_ptr->ref_count == 1);
plugin_ptr= plugin_find_internal(&MyISAM, MYSQL_STORAGE_ENGINE_PLUGIN);
DBUG_ASSERT(plugin_ptr || !mysql_mandatory_plugins[0]);
if (plugin_ptr)
{
DBUG_ASSERT(plugin_ptr->load_option == PLUGIN_FORCE);
if (plugin_initialize(&tmp_root, plugin_ptr, argc, argv, false))
goto err_unlock;
/*
set the global default storage engine variable so that it will
not be null in any child thread.
*/
global_system_variables.table_plugin =
intern_plugin_lock(NULL, plugin_int_to_ref(plugin_ptr));
DBUG_ASSERT(plugin_ptr->ref_count == 1);
}
mysql_mutex_unlock(&LOCK_plugin);
/* Register (not initialize!) all dynamic plugins */