fs/hfsplus/Kconfig v3.0-rc7

HFSPLUS_FS

Apple Extended HFS file system support

If you say Y here, you will be able to mount extended format
Macintosh-formatted hard drive partitions with full read-write access.

This file system is often called HFS+ and was introduced with
MacOS 8. It includes all Mac specific filesystem data such as
data forks and creator codes, but it also has several UNIX
style features such as file ownership and permissions.