I really should subscribe to get individual messages and not just the digest so that I can reply properly. Sorry!
> Just call NtOpenDirectoryObject on \\SYSTEMROOT, rather than > NtOpenSymbolicLinkObject. I would have thought that NtOpenSymbolicLinkObject would have been the more correct approach as the object expected is a symbolic link. No? >That's not an off-chance. It works for all admin accounts. Hmm, strange. Unless the query (0x1) symbolic link specific access right is specified, I always get STATUS_ACCESS_DENIED. With it specified, it succeeds as an administrator or fails otherwise. (I have only tested this under 64-bit Windows 7.) Regards, Nick On Tue, Feb 21, 2012 at 10:26 AM, Nick Lowe <nick.l...@gmail.com> wrote: > I have just tested this and it works. It is faster, simpler and has > less overheads than querying the registry for a potentially stale > value. > > Just call NtOpenSymbolicLinkObject for \SYSTEMROOT with a > DesiredAccess of 0 and no attributes flags in the OBJECT_ATTRIBUTES > structure. > > This will fail with STATUS_ACCESS_DENIED if the system is running with > case insensitivity and STATUS_OBJECT_NAME_NOT_FOUND if running with > case sensitivity. > > For correctness, on the off chance that a successful NTSTATUS value is > returned, the system is running with case insensitivity and the handle > must be closed. > > Regards, > > Nick > > On Tue, Feb 21, 2012 at 9:52 AM, Nick Lowe <nick.l...@gmail.com> wrote: >> OK, fair enough, it is an edge case... I am a stickler for correctness! :P >> >> Looking at previous threads though actually, I notice that the >> following is documented by Microsoft regarding the obcaseinsensitive >> value: >> >> "If this setting is enabled, case insensitivity is enforced for all >> directory objects, symbolic links, and IO objects, including file >> objects. Disabling this setting does not allow the Win32 subsystem to >> become case sensitive." >> >> You could just get away with therefore, in theory, a call to >> NtOpenSymbolicLinkObject for \SYSTEMROOT. If it fails because it >> cannot be found, you know that the system is running with case >> sensitivity, otherwise, it is case sensitive. >> >> Regards, >> >> Nick -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
