GitLab

    test_if_data_home_dir fixed to look into real path.
    Checks added to mi_open for symlinks into data home directory.

 per-file messages:
        include/my_sys.h
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          my_is_symlink interface added

        mysql-test/r/udf.result
          test result fixed (not related to #32167)

        mysys/my_symlink.c
          my_is_symlink() implementsd
          my_realpath() now returns the 'realpath' even if a file isn't a symlink