MDEV-30119 INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION.NAME is NULL for undo tablespaces

- Information_schema.innodb_tablespaces_encryption should print
undo tablespace name as innodb_undo001, innodb_undo002 and soon.

- Encryption test should include undo tablespaces count when
the tests are waiting for the condition to check whether all
tables are encrypted or decrypted.

mysql-test/suite/encryption/r/encrypt_and_grep,undo3.rdiff

+--- encrypt_and_grep.result	2022-09-02 22:36:21.669650278 +0530
++++ encrypt_and_grep.reject	2022-11-29 19:01:22.080027528 +0530
+@@ -14,6 +14,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -35,6 +38,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -62,6 +68,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry

mysql-test/suite/encryption/r/innodb-remove-encryption,undo3.rdiff

+--- innodb-remove-encryption.result	2022-09-02 20:44:59.960430396 +0530
++++ innodb-remove-encryption,undo3.reject	2022-11-29 19:02:24.813094277 +0530
+@@ -13,6 +13,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -24,6 +27,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -36,6 +42,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry

mysql-test/suite/encryption/r/innodb_encrypt_freed,undo3.rdiff

+--- innodb_encrypt_freed.result	2021-03-23 15:44:14.466377983 +0530
++++ innodb_encrypt_freed,undo3.reject	2022-11-29 19:04:24.987010571 +0530
+@@ -14,6 +14,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -29,6 +32,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -40,6 +46,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -55,6 +64,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -70,6 +82,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -87,6 +102,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry

mysql-test/suite/encryption/r/innodb_encrypt_key_rotation_age,undo3.rdiff

+--- innodb_encrypt_key_rotation_age.result	2022-06-02 16:15:08.395122720 +0530
++++ innodb_encrypt_key_rotation_age,undo3.reject	2022-11-29 19:06:07.964542115 +0530
+@@ -12,6 +12,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -27,6 +30,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -39,6 +45,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -59,6 +68,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry
+@@ -71,6 +83,9 @@
+ SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
+ NAME
+ innodb_system
++innodb_undo001
++innodb_undo002
++innodb_undo003
+ mysql/innodb_index_stats
+ mysql/innodb_table_stats
+ mysql/transaction_registry

mysql-test/suite/encryption/t/debug_key_management.test

 -- source include/have_innodb.inc
 -- source include/have_debug.inc
+-- source include/innodb_undo_tablespaces.inc
 -- source include/not_embedded.inc
 
 if (`select count(*) = 0 from information_schema.plugins
@@ -13,7 +14,7 @@ create table t1(a serial) engine=innoDB;
 set global innodb_encrypt_tables=ON;
 show variables like 'innodb_encrypt%';
 
---let $tables_count= `select count(*) + 1 from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + 1 + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 let $wait_condition= select count(*) = $tables_count from information_schema.innodb_tablespaces_encryption where current_key_version=1;
 --source include/wait_condition.inc
 

mysql-test/suite/encryption/t/encrypt_and_grep.test

 -- source include/have_innodb.inc
+-- source include/innodb_undo_tablespaces.inc
 -- source include/have_file_key_management_plugin.inc
 
 #
@@ -59,7 +60,8 @@ SET GLOBAL innodb_encrypt_tables = off;
 
 --echo # Wait max 10 min for key encryption threads to decrypt all spaces
 --let $wait_timeout= 600
---let $tables_count= `select count(*) from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
+
 --let $wait_condition=SELECT COUNT(*) = $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND CURRENT_KEY_VERSION = 0;
 --source include/wait_condition.inc
 

mysql-test/suite/encryption/t/innodb-remove-encryption.test

@@ -2,6 +2,7 @@
 # Test uses restart
 --source include/not_embedded.inc
 --source filekeys_plugin.inc
+--source include/innodb_undo_tablespaces.inc
 
 #
 # MDEV-15566: System tablespace does not easily key rotate to unencrypted
@@ -23,7 +24,7 @@ create table t1(a int not null primary key, b char(200)) engine=innodb;
 
 --echo # Wait until encryption threads have encrypted all tablespaces
 
---let $tables_count= `select count(*) from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 --let $wait_timeout= 600
 --let $wait_condition=SELECT COUNT(*) = $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0 AND ROTATING_OR_FLUSHING = 0;
 --source include/wait_condition.inc

mysql-test/suite/encryption/t/innodb_encrypt_freed.test

@@ -2,6 +2,7 @@
 --source include/have_example_key_management_plugin.inc
 --source include/have_debug.inc
 --source include/not_embedded.inc
+--source include/innodb_undo_tablespaces.inc
 
 SHOW VARIABLES LIKE 'innodb_encrypt%';
 
@@ -10,7 +11,7 @@ SET GLOBAL innodb_encrypt_tables = ON;
 CREATE TABLE t1(f1 BIGINT PRIMARY KEY, f2 int not null,
 		f3 int not null, index(f1), index idx_1(f2),
 		index(f2, f3)) ENGINE=InnoDB;
---let $tables_count= `select count(*) + 1 from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + 1 + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 
 --echo # Wait max 10 min for key encryption threads to encrypt all spaces
 --let $wait_timeout= 600
@@ -30,12 +31,12 @@ insert into t2 values(1);
 
 connection default;
 
---let $tables_count= `select count(*) + 1 from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + 1 + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 set global innodb_encrypt_tables = OFF;
 
 --echo # Wait max 10 min for key encryption threads to decrypt all spaces
 --let $wait_timeout= 600
---let $wait_condition=SELECT COUNT(*) >= $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
+--let $wait_condition=SELECT COUNT(*) >= $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0
 --source include/wait_condition.inc
 --sorted_result
 SELECT NAME FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0;
@@ -63,7 +64,7 @@ drop table t1, t2;
 CREATE TABLE t1(f1 BIGINT PRIMARY KEY, f2 int not null,
 		f3 int not null, index(f1), index idx_1(f2),
 		index(f2, f3)) ENGINE=InnoDB;
---let $tables_count= `select count(*) + 1 from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + 1 + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 
 --echo # Wait max 10 min for key encryption threads to encrypt all spaces
 --let $wait_timeout= 600
@@ -82,7 +83,7 @@ insert into t2 values(1);
 
 connection default;
 
---let $tables_count= `select count(*) + 1 from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + 1 + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 set global innodb_encrypt_tables = OFF;
 
 --echo # Wait max 10 min for key encryption threads to decrypt all spaces

mysql-test/suite/encryption/t/innodb_encrypt_key_rotation_age.test

 -- source include/have_innodb.inc
 -- source include/not_embedded.inc
 -- source include/have_example_key_management_plugin.inc
+-- source include/innodb_undo_tablespaces.inc
 
 CREATE TABLE t1 (f1 INT, f2 VARCHAR(256))engine=innodb;
 INSERT INTO t1 VALUES(1, 'MariaDB'), (2, 'Robot'), (3, 'Science');
@@ -20,7 +21,7 @@ let $restart_parameters= --innodb_encryption_threads=5 --innodb_encryption_rotat
 
 --echo # Wait until encryption threads have encrypted all tablespaces
 
---let $tables_count= `select count(*) + 1 from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + 1 + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 --let $wait_timeout= 600
 --let $wait_condition=SELECT COUNT(*) >= $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
 --source include/wait_condition.inc
@@ -39,7 +40,7 @@ create table t4 (f1 int not null)engine=innodb encrypted=NO;
 
 --echo # Wait until encryption threads have encrypted all tablespaces
 
---let $tables_count= `select count(*) from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 --let $wait_timeout= 600
 --let $wait_condition=SELECT COUNT(*) >= $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
 --source include/wait_condition.inc
@@ -54,7 +55,7 @@ set global innodb_encrypt_tables = OFF;
 
 --echo # Wait until encryption threads to decrypt all unencrypted tablespaces
 
---let $tables_count= `select count(*) from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 --let $wait_timeout= 600
 --let $wait_condition=SELECT COUNT(*) >= $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION = 0 AND ROTATING_OR_FLUSHING = 0;
 --source include/wait_condition.inc
@@ -69,7 +70,7 @@ set global innodb_encrypt_tables = ON;
 
 --echo # Wait until encryption threads to encrypt all unencrypted tablespaces
 
---let $tables_count= `select count(*) from information_schema.tables where engine = 'InnoDB'`
+--let $tables_count= `select count(*) + @@global.innodb_undo_tablespaces from information_schema.tables where engine = 'InnoDB'`
 --let $wait_timeout= 600
 --let $wait_condition=SELECT COUNT(*) >= $tables_count FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE MIN_KEY_VERSION <> 0;
 --source include/wait_condition.inc

mysql-test/suite/encryption/t/innodb_first_page.test

@@ -4,12 +4,14 @@
 
 --source include/have_innodb.inc
 --source include/have_file_key_management_plugin.inc
+--source include/innodb_undo_tablespaces.inc
 
 let $datadir=`select @@datadir`;
 --source include/shutdown_mysqld.inc
 
 --remove_file $datadir/ib_logfile0
 --remove_file $datadir/ibdata1
+--remove_files_wildcard $datadir undo*
 
 --source include/start_mysqld.inc
 

storage/innobase/handler/i_s.cc

@@ -6632,7 +6632,6 @@ i_s_dict_fill_tablespaces_encryption(
 {
 	Field**	fields;
 	struct fil_space_crypt_status_t status;
-
 	DBUG_ENTER("i_s_dict_fill_tablespaces_encryption");
 
 	fields = table_to_fill->field;
@@ -6654,6 +6653,14 @@ i_s_dict_fill_tablespaces_encryption(
 				   name.data(), name.size(),
 				   system_charset_info));
 			fields[TABLESPACES_ENCRYPTION_NAME]->set_notnull();
+		} else if (srv_is_undo_tablespace(space->id)) {
+			char undo_name[sizeof "innodb_undo000"];
+			snprintf(undo_name, sizeof(undo_name),
+			         "innodb_undo%03zu",space->id);
+			OK(fields[TABLESPACES_ENCRYPTION_NAME]->store(
+				   undo_name, strlen(undo_name),
+				   system_charset_info));
+			fields[TABLESPACES_ENCRYPTION_NAME]->set_notnull();
 		} else {
 			fields[TABLESPACES_ENCRYPTION_NAME]->set_null();
 		}