Function acl_set_default_role

sql/sql_acl.cc:4408–4545

}

int acl_set_default_role(THD *thd,
                         const LEX_CSTRING &host,
                         const LEX_CSTRING &user,
                         const LEX_CSTRING &rolename)
{
  Grant_tables tables;
  char user_key[MAX_KEY_LENGTH];
  int result= 1;
  int error;
  ulong query_length= 0;
  bool clear_role= FALSE;
  char buff[512];
  enum_binlog_format save_binlog_format= thd->get_current_stmt_binlog_format();
  const CSET_STRING query_save __attribute__((unused)) = thd->query_string;

  DBUG_ENTER("acl_set_default_role");
  DBUG_PRINT("enter",("host: '%s'  user: '%s'  rolename: '%s'",
                      user.str, safe_str(host.str), safe_str(rolename.str)));

  if (!strcasecmp(rolename.str, none.str))
    clear_role= TRUE;

  if (mysql_bin_log.is_open() ||
      (WSREP(thd) && !IF_WSREP(thd->wsrep_applier, 0)))
  {
    query_length=
      snprintf(buff, sizeof(buff),
               "SET DEFAULT ROLE '%-.120s' FOR '%-.120s'@'%-.120s'",
               safe_str(rolename.str), user.str, safe_str(host.str));
  }

  /*
    This statement will be replicated as a statement, even when using
    row-based replication.  The flag will be reset at the end of the
    statement.
    This has to be handled here as it's called by set_var.cc, which is
    not automaticly handled by sql_parse.cc
  */
  save_binlog_format= thd->set_current_stmt_binlog_format_stmt();

  if (WSREP(thd) && !IF_WSREP(thd->wsrep_applier, 0))
  {
    thd->set_query(buff, query_length, system_charset_info);
    // Attention!!! here is implicit goto error;
    WSREP_TO_ISOLATION_BEGIN(WSREP_MYSQL_DB, NULL, NULL);
  }

  /*
    Extra block due to WSREP_TO_ISOLATION_BEGIN using goto.
    TODO(cvicentiu) Should move  this block out in a new function.
  */
  {
    if ((result= tables.open_and_lock(thd, Table_user, TL_WRITE)))
      DBUG_RETURN(result != 1);

    const User_table& user_table= tables.user_table();
    TABLE *table= user_table.table();