FAT, NTFS, CIFS and DOS attributes
H. Peter Anvin
hpa at zytor.com
Tue Jan 4 01:30:44 GMT 2005
tridge at samba.org wrote:
> > If we're just thinking about MS-oriented discretionary access control then
> > I think the owner of the file is basically king and should be the only
> > normal user to that can read and write it's xattrs. So whatever namespace
> > that is (not system).
> for the DACL the owner is king (the owner gets the WRITE_DAC,
> READ_CONTROL and STD_DELETE access bits forced on), but for the other
> parts of the full security descriptor this is not true. The owner
> doesn't get to arbitrarily write to the owner_sid or SACL. Thats why I
> used security.NTACL not user.NTACL.
> I suppose we could have a separate user.DACL attribute, but given that
> there is just one API that sets all 4 elements of the SD (with a
> bitmask to say which bits to set), it made more sense to me to group
> them all together. The disadvantage is that Samba needs to gain/lose
> root privileges for the "set SD" call even if the client is only
> asking to set the DACL.
Even more so a reason for this not to be a general API.
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