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MDEV-12863 No table can be created after second encryption plugin attempted to load

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when deinitializing encryption plugins, disable server-wide encryption
only if this plugin is the one that is used for encryption.
This commit is contained in:
Sergei Golubchik
2017-08-08 14:52:08 +02:00
parent 8e8d42ddf0
commit 5099d6de61
3 changed files with 37 additions and 6 deletions
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7
mysql-test/suite/encryption/r/second_plugin-12863.result Normal file
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@ -0,0 +1,7 @@
call mtr.add_suppression('debug.key.management');
install soname 'debug_key_management';
ERROR HY000: Can't initialize function 'debug_key_management'; Plugin initialization function failed.
create table t1 (a varchar(255)) engine=innodb encrypted=yes;
create table t2 (a varchar(255)) engine=innodb;
create table t3 (a varchar(255)) engine=innodb encrypted=no;
drop table t1, t2, t3;

16
mysql-test/suite/encryption/t/second_plugin-12863.test Normal file
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@ -0,0 +1,16 @@
#
# MDEV-12863 No table can be created after second encryption plugin attempted to load
#
--source include/have_innodb.inc
--source include/have_file_key_management_plugin.inc
call mtr.add_suppression('debug.key.management');
--error 1123
install soname 'debug_key_management';
create table t1 (a varchar(255)) engine=innodb encrypted=yes;
create table t2 (a varchar(255)) engine=innodb;
create table t3 (a varchar(255)) engine=innodb encrypted=no;
drop table t1, t2, t3;

20
sql/encryption.cc
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@ -98,19 +98,27 @@ int initialize_encryption_plugin(st_plugin_int *plugin)
int finalize_encryption_plugin(st_plugin_int *plugin)
{
encryption_handler.encryption_key_get_func=
(uint (*)(uint, uint, uchar*, uint*))no_key;
encryption_handler.encryption_key_get_latest_version_func= no_key;
encryption_handler.encryption_ctx_size_func= zero_size;
bool used= plugin_ref_to_int(encryption_manager) == plugin;
if (used)
{
encryption_handler.encryption_key_get_func=
(uint (*)(uint, uint, uchar*, uint*))no_key;
encryption_handler.encryption_key_get_latest_version_func= no_key;
encryption_handler.encryption_ctx_size_func= zero_size;
}
if (plugin && plugin->plugin->deinit && plugin->plugin->deinit(NULL))
{
DBUG_PRINT("warning", ("Plugin '%s' deinit function returned error.",
plugin->name.str));
}
if (encryption_manager)
if (used)
{
plugin_unlock(NULL, encryption_manager);
encryption_manager= 0;
encryption_manager= 0;
}
return 0;
}