Commit e0b735ab authored by unknown's avatar unknown
Browse files

Merge moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.1 

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.1-bug23159
parents 7c35c3d5 4b9f7904

mysql-test/r/ps.result

+58 −49
Original line number Diff line number Diff line
@@ -796,12 +796,12 @@ set @old_max_prepared_stmt_count= @@max_prepared_stmt_count; 
show variables like 'max_prepared_stmt_count';

Variable_name	Value

max_prepared_stmt_count	16382

show variables like 'prepared_stmt_count';

show status like 'prepared_stmt_count';

Variable_name	Value

prepared_stmt_count	0

select @@max_prepared_stmt_count, @@prepared_stmt_count;

@@max_prepared_stmt_count	@@prepared_stmt_count

16382	0

Prepared_stmt_count	0

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

16382

set global max_prepared_stmt_count=-1;

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count
@@ -820,67 +820,70 @@ set max_prepared_stmt_count=1; 
ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL

set local max_prepared_stmt_count=1;

ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL

set local prepared_stmt_count=0;

ERROR HY000: Variable 'prepared_stmt_count' is a read only variable

set @@prepared_stmt_count=0;

ERROR HY000: Variable 'prepared_stmt_count' is a read only variable

set global prepared_stmt_count=1;

ERROR HY000: Variable 'prepared_stmt_count' is a read only variable

set global max_prepared_stmt_count=1;

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

1

set global max_prepared_stmt_count=0;

select @@max_prepared_stmt_count, @@prepared_stmt_count;

@@max_prepared_stmt_count	@@prepared_stmt_count

0	0

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

0

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

prepare stmt from "select 1";

ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0)

select @@prepared_stmt_count;

@@prepared_stmt_count

0

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

set global max_prepared_stmt_count=1;

prepare stmt from "select 1";

select @@prepared_stmt_count;

@@prepared_stmt_count

1

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	1

prepare stmt1 from "select 1";

ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 1)

select @@prepared_stmt_count;

@@prepared_stmt_count

1

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	1

deallocate prepare stmt;

select @@prepared_stmt_count;

@@prepared_stmt_count

0

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

prepare stmt from "select 1";

select @@prepared_stmt_count;

@@prepared_stmt_count

1

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	1

prepare stmt from "select 2";

select @@prepared_stmt_count;

@@prepared_stmt_count

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	1

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	1

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

1

select @@prepared_stmt_count, @@max_prepared_stmt_count;

@@prepared_stmt_count	@@max_prepared_stmt_count

1	1

set global max_prepared_stmt_count=0;

prepare stmt from "select 1";

ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0)

execute stmt;

ERROR HY000: Unknown prepared statement handler (stmt) given to EXECUTE

select @@prepared_stmt_count;

@@prepared_stmt_count

0

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

prepare stmt from "select 1";

ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0)

select @@prepared_stmt_count;

@@prepared_stmt_count

0

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

set global max_prepared_stmt_count=3;

select @@max_prepared_stmt_count, @@prepared_stmt_count;

@@max_prepared_stmt_count	@@prepared_stmt_count

3	0

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

3

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

prepare stmt from "select 1";

prepare stmt from "select 2";

prepare stmt1 from "select 3";
@@ -888,13 +891,19 @@ prepare stmt2 from "select 4"; 
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 3)

prepare stmt2 from "select 4";

ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 3)

select @@max_prepared_stmt_count, @@prepared_stmt_count;

@@max_prepared_stmt_count	@@prepared_stmt_count

3	3

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

3

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	3

deallocate prepare stmt;

select @@max_prepared_stmt_count, @@prepared_stmt_count;

@@max_prepared_stmt_count	@@prepared_stmt_count

3	0

select @@max_prepared_stmt_count;

@@max_prepared_stmt_count

3

show status like 'prepared_stmt_count';

Variable_name	Value

Prepared_stmt_count	0

set global max_prepared_stmt_count= @old_max_prepared_stmt_count;

drop table if exists t1;

create temporary table if not exists t1 (a1 int);

mysql-test/t/ps.test

+35 −30
Original line number Diff line number Diff line
@@ -849,6 +849,9 @@ drop table t1; 
# Bug#16365 Prepared Statements: DoS with too many open statements

# Check that the limit @@max_prpeared_stmt_count works.

#

# This is also the test for bug#23159 prepared_stmt_count should be

# status variable.

#

# Save the old value

set @old_max_prepared_stmt_count= @@max_prepared_stmt_count;

#
@@ -858,17 +861,17 @@ set @old_max_prepared_stmt_count= @@max_prepared_stmt_count; 
#

--disable_ps_protocol

#

# A. Check that the new variables are present in SHOW VARIABLES list.

# A. Check that the new variables are present in SHOW VARIABLES and

# SHOW STATUS lists.

#

show variables like 'max_prepared_stmt_count';

show variables like 'prepared_stmt_count';

show status like 'prepared_stmt_count';

#

# B. Check that the new variables are selectable.

# B. Check that the new system variable is selectable.

#

select @@max_prepared_stmt_count, @@prepared_stmt_count;

select @@max_prepared_stmt_count;

#

# C. Check that max_prepared_stmt_count is settable (global only),

#    whereas prepared_stmt_count is readonly.

# C. Check that max_prepared_stmt_count is settable (global only).

#

set global max_prepared_stmt_count=-1;

select @@max_prepared_stmt_count;
@@ -882,12 +885,6 @@ set @@max_prepared_stmt_count=1; 
set max_prepared_stmt_count=1;

--error ER_GLOBAL_VARIABLE

set local max_prepared_stmt_count=1;

--error ER_INCORRECT_GLOBAL_LOCAL_VAR

set local prepared_stmt_count=0;

--error ER_INCORRECT_GLOBAL_LOCAL_VAR

set @@prepared_stmt_count=0;

--error ER_INCORRECT_GLOBAL_LOCAL_VAR 

set global prepared_stmt_count=1;

# set to a reasonable limit works

set global max_prepared_stmt_count=1;

select @@max_prepared_stmt_count;
@@ -895,47 +892,50 @@ select @@max_prepared_stmt_count; 
# D. Check that the variables actually work.

#

set global max_prepared_stmt_count=0;

select @@max_prepared_stmt_count, @@prepared_stmt_count;

select @@max_prepared_stmt_count;

show status like 'prepared_stmt_count';

--error ER_MAX_PREPARED_STMT_COUNT_REACHED

prepare stmt from "select 1";

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

set global max_prepared_stmt_count=1;

prepare stmt from "select 1";

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

--error ER_MAX_PREPARED_STMT_COUNT_REACHED

prepare stmt1 from "select 1";

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

deallocate prepare stmt;

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

#

# E. Check that we can prepare a statement with the same name 

# successfully, without hitting the limit.

#

prepare stmt from "select 1";

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

prepare stmt from "select 2";

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

#

# F. We can set the max below the current count. In this case no new 

# statements should be allowed to prepare.

#

select @@prepared_stmt_count, @@max_prepared_stmt_count;

show status like 'prepared_stmt_count';

select @@max_prepared_stmt_count;

set global max_prepared_stmt_count=0;

--error ER_MAX_PREPARED_STMT_COUNT_REACHED

prepare stmt from "select 1";

# Result: the old statement is deallocated, the new is not created.

--error 1243 # ER_UNKNOWN_STMT_HANDLER

--error ER_UNKNOWN_STMT_HANDLER

execute stmt;

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

--error ER_MAX_PREPARED_STMT_COUNT_REACHED

prepare stmt from "select 1";

select @@prepared_stmt_count;

show status like 'prepared_stmt_count';

#

# G. Show that the variables are up to date even after a connection with all

# statements in it was terminated.

#

set global max_prepared_stmt_count=3;

select @@max_prepared_stmt_count, @@prepared_stmt_count;

select @@max_prepared_stmt_count;

show status like 'prepared_stmt_count';

prepare stmt from "select 1";

connect (con1,localhost,root,,);

connection con1;
@@ -946,24 +946,29 @@ prepare stmt2 from "select 4"; 
connection default;

--error ER_MAX_PREPARED_STMT_COUNT_REACHED 

prepare stmt2 from "select 4";

select @@max_prepared_stmt_count, @@prepared_stmt_count;

select @@max_prepared_stmt_count;

show status like 'prepared_stmt_count';

disconnect con1;

connection default;

# Wait for the connection to die: deal with a possible race

deallocate prepare stmt;

let $count= `select @@prepared_stmt_count`;

let $query= select variable_value from information_schema.global_status

            where variable_name = 'prepared_stmt_count';

let $count= `$query`;

if ($count)

{

--sleep 2

  let $count= `select @@prepared_stmt_count`;

--sleep 1

  let $count= `$query`;

}

select @@max_prepared_stmt_count, @@prepared_stmt_count;

select @@max_prepared_stmt_count;

show status like 'prepared_stmt_count';

#

# Restore the old value.

#

set global max_prepared_stmt_count= @old_max_prepared_stmt_count;

--enable_ps_protocol





#

# Bug#19399 "Stored Procedures 'Lost Connection' when dropping/creating

#            tables"

sql/mysqld.cc

+12 −0
Original line number Diff line number Diff line
@@ -6337,6 +6337,16 @@ static int show_open_tables(THD *thd, SHOW_VAR *var, char *buff) 
  return 0;

}



static int show_prepared_stmt_count(THD *thd, SHOW_VAR *var, char *buff)

{

  var->type= SHOW_LONG;

  var->value= buff;

  pthread_mutex_lock(&LOCK_prepared_stmt_count);

  *((long *)buff)= (long)prepared_stmt_count;

  pthread_mutex_unlock(&LOCK_prepared_stmt_count);

  return 0;

}



static int show_table_definitions(THD *thd, SHOW_VAR *var, char *buff)

{

  var->type= SHOW_LONG;
@@ -6747,6 +6757,7 @@ SHOW_VAR status_vars[]= { 
  {"Open_table_definitions",   (char*) &show_table_definitions, SHOW_FUNC},

  {"Open_tables",              (char*) &show_open_tables,       SHOW_FUNC},

  {"Opened_tables",            (char*) offsetof(STATUS_VAR, opened_tables), SHOW_LONG_STATUS},

  {"Prepared_stmt_count",      (char*) &show_prepared_stmt_count, SHOW_FUNC},

#ifdef HAVE_QUERY_CACHE

  {"Qcache_free_blocks",       (char*) &query_cache.free_memory_blocks, SHOW_LONG_NOFLUSH},

  {"Qcache_free_memory",       (char*) &query_cache.free_memory, SHOW_LONG_NOFLUSH},
@@ -6926,6 +6937,7 @@ static void mysql_init_variables(void) 
  binlog_cache_use=  binlog_cache_disk_use= 0;

  max_used_connections= slow_launch_threads = 0;

  mysqld_user= mysqld_chroot= opt_init_file= opt_bin_logname = 0;

  prepared_stmt_count= 0;

  errmesg= 0;

  mysqld_unix_port= opt_mysql_tmpdir= my_bind_addr_str= NullS;

  bzero((gptr) &mysql_tmpdir_list, sizeof(mysql_tmpdir_list));

sql/set_var.cc

+0 −13
Original line number Diff line number Diff line
@@ -155,7 +155,6 @@ static KEY_CACHE *create_key_cache(const char *name, uint length); 
void fix_sql_mode_var(THD *thd, enum_var_type type);

static byte *get_error_count(THD *thd);

static byte *get_warning_count(THD *thd);

static byte *get_prepared_stmt_count(THD *thd);

static byte *get_tmpdir(THD *thd);

static int  sys_check_log_path(THD *thd,  set_var *var);

static bool sys_update_general_log_path(THD *thd, set_var * var);
@@ -639,9 +638,6 @@ static sys_var_readonly sys_warning_count("warning_count", 
						  OPT_SESSION,

						  SHOW_LONG,

						  get_warning_count);

static sys_var_readonly	sys_prepared_stmt_count("prepared_stmt_count",

                                                OPT_GLOBAL, SHOW_LONG,

                                                get_prepared_stmt_count);



/* alias for last_insert_id() to be compatible with Sybase */

#ifdef HAVE_REPLICATION
@@ -956,7 +952,6 @@ SHOW_VAR init_vars[]= { 
  {"plugin_dir",              (char*) opt_plugin_dir,               SHOW_CHAR},

  {"port",                    (char*) &mysqld_port,                  SHOW_INT},

  {sys_preload_buff_size.name, (char*) &sys_preload_buff_size,      SHOW_SYS},

  {sys_prepared_stmt_count.name, (char*) &sys_prepared_stmt_count, SHOW_SYS},

  {"protocol_version",        (char*) &protocol_version,            SHOW_INT},

  {sys_query_alloc_block_size.name, (char*) &sys_query_alloc_block_size,

   SHOW_SYS},
@@ -3151,14 +3146,6 @@ static byte *get_error_count(THD *thd) 
  return (byte*) &thd->sys_var_tmp.long_value;

}



static byte *get_prepared_stmt_count(THD *thd)

{

  pthread_mutex_lock(&LOCK_prepared_stmt_count);

  thd->sys_var_tmp.ulong_value= prepared_stmt_count;

  pthread_mutex_unlock(&LOCK_prepared_stmt_count);

  return (byte*) &thd->sys_var_tmp.ulong_value;

}





/*

  Get the tmpdir that was specified or chosen by default