However, under Mac OS X 10.4.x, permissions for AFP-copied/created are set as read/write for the owner but not for the group, meaning that files cannot be shared between client users.

The Be operating system file system, known simply as BFS, is the file system for the Haiku, BeOS, and SkyOS operating systems. When it was created in the late '90s as part of the ill-fated BeOS ...