Fixed a bug in DROP DATABASE when database had a RAID type table.

Bug ID 381.

mysql-test/r/raid.result

+create database test_raid;
+create table test_raid.r1 (i int) raid_type=1;
+drop database test_raid;
 DROP TABLE IF EXISTS t1,t2;
 CREATE TABLE t1 (
 id int unsigned not null auto_increment primary key,

mysql-test/t/raid.test

@@ -5,6 +5,9 @@ show variables like "have_raid";
 # Test of raided tables
 #
 
+create database test_raid;
+create table test_raid.r1 (i int) raid_type=1;
+drop database test_raid;
 DROP TABLE IF EXISTS t1,t2;
 CREATE TABLE t1 (
 id int unsigned not null auto_increment primary key,

sql/mysqld.cc

@@ -4722,11 +4722,9 @@ static void get_options(int argc,char **argv)
   my_disable_locking= myisam_single_user= test(opt_external_locking == 0);
   my_default_record_cache_size=global_system_variables.read_buff_size;
   myisam_max_temp_length=
-    (my_off_t) min(global_system_variables.myisam_max_sort_file_size,
-		   (ulonglong) MAX_FILE_SIZE);
+    (my_off_t) global_system_variables.myisam_max_sort_file_size;
   myisam_max_extra_temp_length= 
-    (my_off_t) min(global_system_variables.myisam_max_extra_sort_file_size,
-		   (ulonglong) MAX_FILE_SIZE);
+    (my_off_t) global_system_variables.myisam_max_extra_sort_file_size;
 
   /* Set global variables based on startup options */
   myisam_block_size=(uint) 1 << my_bit_log2(opt_myisam_block_size);

sql/set_var.cc

@@ -592,7 +592,7 @@ static void
 fix_myisam_max_extra_sort_file_size(THD *thd, enum_var_type type)
 {
   myisam_max_extra_temp_length=
-    (my_off_t) global_system_variables.myisam_max_sort_file_size;
+    (my_off_t) global_system_variables.myisam_max_extra_sort_file_size;
 }
 
 

sql/sql_db.cc

@@ -211,6 +211,8 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp, const char *db,
   ulong found_other_files=0;
   char filePath[FN_REFLEN];
   TABLE_LIST *tot_list=0, **tot_list_next;
+  List<String> raid_dirs;
+
   DBUG_ENTER("mysql_rm_known_files");
   DBUG_PRINT("enter",("path: %s", org_path));
 
@@ -229,6 +231,8 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp, const char *db,
     {
       char newpath[FN_REFLEN];
       MY_DIR *new_dirp;
+      String *dir;
+
       strxmov(newpath,org_path,"/",file->name,NullS);
       unpack_filename(newpath,newpath);
       if ((new_dirp = my_dir(newpath,MYF(MY_DONT_SORT))))
@@ -239,7 +243,11 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp, const char *db,
 	  my_dirend(dirp);
 	  DBUG_RETURN(-1);
 	}
+	raid_dirs.push_back(dir=new String(newpath));
+	dir->copy();
+	continue;
       }
+      found_other_files++;
       continue;
     }
     if (find_type(fn_ext(file->name),&deletable_extentions,1+2) <= 0)
@@ -278,12 +286,19 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp, const char *db,
       deleted++;
     }
   }
-  my_dirend(dirp);
-
   if (thd->killed ||
       (tot_list && mysql_rm_table_part2_with_lock(thd, tot_list, 1, 1)))
+  {
+    my_dirend(dirp);
     DBUG_RETURN(-1);
-
+  }
+  List_iterator<String> it(raid_dirs);
+  String *dir;
+  while ((dir= it++))
+    if (rmdir(dir->c_ptr()) < 0)
+      found_other_files++;
+  my_dirend(dirp);  
+  
   /*
     If the directory is a symbolic link, remove the link first, then
     remove the directory the symbolic link pointed at