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Re: cygwin32 NT4.0 NTFS - problem?
- To: Patrik Wennberg - NCR <PATRIK at Oslo4GW dot Norway dot NCR dot COM>
- Subject: Re: cygwin32 NT4.0 NTFS - problem?
- From: Jason Zions <jazz at softway dot com>
- Date: Mon, 01 Dec 1997 12:52:30 -0700
- CC: "'gnu-win32 at cygnus dot com'" <gnu-win32 at cygnus dot com>
- Organization: Softway Systems Inc.
- References: <34827681@Oslo4GW.Norway.NCR.COM>
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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