Re: [ros-general] Microsoft wants royalties for use of FAT

[KJK::Hyperion]

At 18.41 06/12/2003, you wrote:
>  Agreed; the security model is one issue.  For an NT
> clone, you really need 
> a filesystem capable of supporting ACLs, among other things.  Does ext3 
> support extended attributes?  If so, then this could be implemented over 
> top of that; 
it could - *if* we want a sloppy and inefficient implementation. ACLs have 
arbitrary length and are in the vast majority of cases inherited from the 
parent directory: NTFS, in fact, collapses identical ACLs. And that's just 
an example. Just speaking feature-wise, NTFS has DOS attributes and DOS 
short filenames, OS/2 extended attributes, sparse files, compression, 
encryption, named streams, per-file object ids, reparse points and god 
knows how many minor ones I've left out. But that's just overlooking the by 
far biggest issue: what about user ids? Windows NT has globally unique user 
ids of arbitrary length, vs the fixed-length, locally unique user ids 
normally found elsewhere. Before you ask: yes, files need to be indexed by 
SID. Quota management requires it. Good luck implementing all of that with 
extended attributes