Mail Archives: cygwin/1997/12/01/22:33:50
The NTFS security model doesn't distinguish between users and groups;
each ACE in an ACL identifies a security principal (either user or
group) and lists the principal's access rights. A file has an owner,
which is any security principal (again, can be a group). A file also has
a primary group, but I think NTFS enforces this to actually be a group
and not a user.
By default, Win32 frequently makes the Administrators *group* the owner
of any file created by any member of the Administrators group. Typical
ACLs would have two entries: an ACE for the Administrators group and an
ACE for Everyone. Cygwin has to somehow map those two ACEs into the
classical Unix mode bits; something someplace is *always* going to
appear odd when an ACL doesn't have exactly an ACE for the owner, an ACE
for a group, and an ACE for everyone/authenticated users/whatever cygwin
thinks "Unix Other" maps to.
Jason
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