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BUG#40980 - Drop table can remove another MyISAM table's

data and index files

It was possible if DATA/INDEX DIRECTORY is pointing to
symlinked MySQL data home directory.

Do not allow to drop data/index files implicitly symlinked
to data home directory. For such tables remove symlink only.

mysql-test/r/symlink.result:
  A test case for BUG#40980.
mysql-test/t/symlink.test:
  A test case for BUG#40980.
storage/myisam/mi_delete_table.c:
  Do not allow to drop data/index files implicitly symlinked
  to data home directory. For such tables remove symlink only.
This commit is contained in:
Sergey Vojtovich
2010-04-01 18:49:02 +04:00
parent 454c003a5c
commit ab1242b9e3
3 changed files with 71 additions and 2 deletions

View File

@ -168,4 +168,16 @@ Warning 1618 <DATA DIRECTORY> option ignored
Warning 1618 <INDEX DIRECTORY> option ignored
DROP TABLE t1;
SET @@SQL_MODE=@OLD_SQL_MODE;
#
# BUG#40980 - Drop table can remove another MyISAM table's
# data and index files
#
CREATE TABLE user(a INT) DATA DIRECTORY='MYSQL_TMP_DIR/mysql'
INDEX DIRECTORY='MYSQL_TMP_DIR/mysql';
FLUSH TABLE user;
# Symlinking mysql database to tmpdir
FLUSH TABLE mysql.user;
DROP TABLE user;
FLUSH TABLE mysql.user;
SELECT * FROM mysql.user;
End of 5.1 tests