13 May
2005
13 May
'05
3:22 p.m.
Mike Swanson wrote:
Well, Reiser4 is probably an NT featureset-compatible
filesystem made
for Linux, but may also work just fine on WinNT. There already exist
ACL hacks for both ext2 and reiserfs (v3), which would be what NT
typically looks for.
I have been reading up on reiser4 and it does look interesting.
This is because the ext2 filesystem doesn't contain
a username, just
the ID. Linux thinks that Frank is the owner of the file, because that
ID is the same as the one the filesystem says it is. Windows NT (and
many non-NT, including Linux, via ACLs) stores the username in the
filesystem, not the ID. This also can fall into a problem where Joe is
not the same person on two computers.
No, NT does NOT store the username in the filesystem. It stores
security descriptors which contain SIDs. The mapping of SIDs to human
readable names is done by lsass from information either stored in the
SAM portion of the registry, or from information obtained from a domain
controller or active directory. Because the SIDs are unique, the
foreign system will not incorrectly interpret them as referring to
someone they are not.