Merge chilla.local:/home/mydev/mysql-4.1-bug25289

into  chilla.local:/home/mydev/mysql-5.0-bug25289


sql/ha_myisam.cc:
  Bug#25289 - repair table causes "my_seek.c:56:
              my_seek: Assertion `fd != -1' failed"
  Manual merge from 4.1

sql/ha_myisam.cc

@@ -941,6 +941,22 @@ int ha_myisam::repair(THD *thd, MI_CHECK &param, bool optimize)
   ha_rows rows= file->state->records;
   DBUG_ENTER("ha_myisam::repair");
 
+  /*
+    Normally this method is entered with a properly opened table. If the
+    repair fails, it can be repeated with more elaborate options. Under
+    special circumstances it can happen that a repair fails so that it
+    closed the data file and cannot re-open it. In this case file->dfile
+    is set to -1. We must not try another repair without an open data
+    file. (Bug #25289)
+  */
+  if (file->dfile == -1)
+  {
+    sql_print_information("Retrying repair of: '%s' failed. "
+                          "Please try REPAIR EXTENDED or myisamchk",
+                          table->s->path);
+    DBUG_RETURN(HA_ADMIN_FAILED);
+  }
+
   param.db_name=    table->s->db;
   param.table_name= table->alias;
   param.tmpfile_createflag = O_RDWR | O_TRUNC;