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Added syntax and implementation for BACKUP STAGE's

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Part of MDEV-5336 Implement LOCK FOR BACKUP

- Changed check of Global_only_lock to also include BACKUP lock.
- We store latest MDL_BACKUP_DDL lock in thd->mdl_backup_ticket to be able
  to downgrade lock during copy_data_between_tables()
This commit is contained in:
Monty
2018-11-13 01:34:37 +02:00
parent 965311ee8b
commit c53aab974b
38 changed files with 3530 additions and 41 deletions
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40
mysql-test/main/backup_priv.result Normal file
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#
# Test privileges for BACKUP STAGES
#
set sql_mode="";
GRANT RELOAD ON *.* TO user1@localhost;
GRANT CREATE, DROP ON *.* TO user2@localhost;
connect con1, localhost, user1;
BACKUP STAGE START;
BACKUP STAGE END;
# change_user must release backup lock
BACKUP STAGE START;
BACKUP STAGE FLUSH;
SELECT lock_mode FROM information_schema.metadata_lock_info WHERE lock_type='Backup lock';
lock_mode
MDL_BACKUP_FLUSH
SELECT lock_mode FROM information_schema.metadata_lock_info WHERE lock_type='Backup lock';
lock_mode
disconnect con1;
connection default;
# A very low privileged user (-> con4) cannot acquire the backup lock
connect con1, localhost, user2;
BACKUP STAGE START;
ERROR 42000: Access denied; you need (at least one of) the RELOAD privilege(s) for this operation
BACKUP STAGE FLUSH;
ERROR 42000: Access denied; you need (at least one of) the RELOAD privilege(s) for this operation
BACKUP STAGE BLOCK_DDL;
ERROR 42000: Access denied; you need (at least one of) the RELOAD privilege(s) for this operation
BACKUP STAGE BLOCK_COMMIT;
ERROR 42000: Access denied; you need (at least one of) the RELOAD privilege(s) for this operation
BACKUP STAGE END;
ERROR 42000: Access denied; you need (at least one of) the RELOAD privilege(s) for this operation
disconnect con1;
connection default;
DROP USER user1@localhost, user2@localhost;
#
# Test using BACKUP STAGES in a SP
#
create procedure foo42()
BACKUP STAGE START;
ERROR 0A000: BACKUP STAGE is not allowed in stored procedures