Function read_maria_plugin_info

sql/sql_plugin.cc:657–741

*/

static my_bool read_maria_plugin_info(struct st_plugin_dl *plugin_dl,
                                      void *sym, char *dlpath, myf MyFlags)
{
  DBUG_ENTER("read_maria_plugin_info");

  /* Determine interface version */
  if (!(sym))
  {
    /*
      Actually this branch impossible because in case of absence of maria
      version we try mysql version.
    */
    if (!opt_silent_startup)
      my_error(ER_CANT_FIND_DL_ENTRY, MyFlags,
               maria_plugin_interface_version_sym, dlpath);
    DBUG_RETURN(TRUE);
  }
  plugin_dl->mariaversion= *(int *)sym;
  plugin_dl->mysqlversion= 0;
  /* Versioning */
  if (plugin_dl->mariaversion < min_maria_plugin_interface_version ||
      (plugin_dl->mariaversion >> 8) > (MARIA_PLUGIN_INTERFACE_VERSION >> 8))
  {
    my_error(ER_CANT_OPEN_LIBRARY, MyFlags, dlpath, ENOEXEC,
                 "plugin interface version mismatch");
    DBUG_RETURN(TRUE);
  }
  /* Find plugin declarations */
  if (!(sym= dlsym(plugin_dl->handle, maria_plugin_declarations_sym)))
  {
    my_error(ER_CANT_FIND_DL_ENTRY, MyFlags, maria_plugin_declarations_sym, dlpath);
    DBUG_RETURN(TRUE);
  }
  if (plugin_dl->mariaversion != MARIA_PLUGIN_INTERFACE_VERSION)
  {
    uint sizeof_st_plugin;
    struct st_maria_plugin *old, *cur;
    char *ptr= (char *)sym;

    if ((sym= dlsym(plugin_dl->handle, maria_sizeof_st_plugin_sym)))
      sizeof_st_plugin= *(int *)sym;
    else
    {
      my_error(ER_CANT_FIND_DL_ENTRY, MyFlags, maria_sizeof_st_plugin_sym,
               dlpath);
      DBUG_RETURN(TRUE);
    }

    if (sizeof_st_plugin != sizeof(st_mysql_plugin))
    {
      int i;
      for (i= 0;
           ((struct st_maria_plugin *)(ptr + i * sizeof_st_plugin))->info;
           i++)
        /* no op */;

      cur= (struct st_maria_plugin*)
        my_malloc(key_memory_mysql_plugin, (i + 1) * sizeof(struct st_maria_plugin),