fixes + mirror

*** 61,70 ****
--- 61,71 ----
       N_("HINT"), ARG_TYPE_STRING},
      {"hint-arc",   0, GRUB_ARG_OPTION_REPEATABLE,
       N_("First try the device HINT if currently running on ARC."
          " If HINT ends in comma, also try subpartitions"),
       N_("HINT"), ARG_TYPE_STRING},
+     {"zfs-mirror", 'z', 0, N_("Handle zfs-mirror disk"), 0, 0},
      {0, 0, 0, 0, 0, 0}
    };
  
  enum options
    {
*** 77,96 ****
--- 78,99 ----
      SEARCH_HINT_IEEE1275,
      SEARCH_HINT_BIOS,
      SEARCH_HINT_BAREMETAL,
      SEARCH_HINT_EFI,
      SEARCH_HINT_ARC,
+     SEARCH_ZFS_MIRROR,
   };
  
  static grub_err_t
  grub_cmd_search (grub_extcmd_context_t ctxt, int argc, char **args)
  {
    struct grub_arg_list *state = ctxt->state;
    const char *var = 0;
    const char *id = 0;
    int i = 0, j = 0, nhints = 0;
    char **hints = NULL;
+   int mirror_mode = 0;
  
    if (state[SEARCH_HINT].set)
      for (i = 0; state[SEARCH_HINT].args[i]; i++)
        nhints++;
  
*** 175,193 ****
        var = "root";
      }
    else
      return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
  
    if (state[SEARCH_LABEL].set)
      grub_search_label (id, var, state[SEARCH_NO_FLOPPY].set, 
!                        hints, nhints);
    else if (state[SEARCH_FS_UUID].set)
      grub_search_fs_uuid (id, var, state[SEARCH_NO_FLOPPY].set,
!                          hints, nhints);
    else if (state[SEARCH_FILE].set)
      grub_search_fs_file (id, var, state[SEARCH_NO_FLOPPY].set, 
!                          hints, nhints);
    else
      return grub_error (GRUB_ERR_INVALID_COMMAND, "unspecified search type");
  
    return grub_errno;
  }
--- 178,199 ----
        var = "root";
      }
    else
      return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
  
+   if (state[SEARCH_ZFS_MIRROR].set)
+     mirror_mode = 1;
+ 
    if (state[SEARCH_LABEL].set)
      grub_search_label (id, var, state[SEARCH_NO_FLOPPY].set, 
!                        hints, nhints, mirror_mode);
    else if (state[SEARCH_FS_UUID].set)
      grub_search_fs_uuid (id, var, state[SEARCH_NO_FLOPPY].set,
!                          hints, nhints, mirror_mode);
    else if (state[SEARCH_FILE].set)
      grub_search_fs_file (id, var, state[SEARCH_NO_FLOPPY].set, 
!                          hints, nhints, mirror_mode);
    else
      return grub_error (GRUB_ERR_INVALID_COMMAND, "unspecified search type");
  
    return grub_errno;
  }