I see numerous how-to examples for mounting an
ntfs partition with either a
mount command or an entry in
fstab. In all cases, specifying
ntfs as the filesystem is associated with also specifying
umask=0222, and specifying
ntsf-3g never has a
Trying to research
umask, I came across numerous explanations like this one. I can't get from those explanations to understanding "0222", which among other things, has one more digit than the specification seems to describe. I understand that it supposedly reduces permissions from the default definition. That's not much help, either. I'm guessing that it relates to writing, since in Linux,
ntfs-3g supports it and at least as of a few years ago,
ntfs did not.
What are the default permissions (I assume they relate to the directories and files and are independent of the filesystem), and what does "0222" do to that? Why is it needed? Is it just to avoid an error message trying to write to a partition when Linux doesn't support it?