On Oct 20 13:50, Franz Sirl wrote:
Am 2011-10-20 11:20, schrieb Corinna Vinschen:
On Oct 19 18:43, Franz Sirl wrote:
True. But on the other hand NWFS and NcFsd exercise a lot of pathes
in the Cygwin sourcecode that aren't usually used.
Not really a lot. NWFS is known to have three problems:
- The NtQueryInformationFile(FileBasicInformation) call fails. This
call is only used in circumstance which don't affect NWFS.
I think that still fails with NcFsd, I'll check it.
As I wrote, it's not used, so even if it fails, it's worth a
support case with Novell, but it doesn't mean we have to change
Cygwin.
- NWFS does not support re-opening a file by handle, so it always has to
be re-opened by name. The only difference here is how the
OBJECT_ATTRIBUTES is created, with a handle or with a name.
I've worked with Novell to fix that one for NcFsd, will be in one of
the next releases (IR10 or IR11 I guess).
Cool, but I think that NcFsd should still be subsumed under NWFS.
The fact that re-opening doesn't quite work isn't such a big problem,
and by using the OBJECT_ATTRIBUTES with a name we can support older
versions of NcFsd as well.
$ mount
F: on /cygdrive/f type ncfsd (binary,posix=0,user,noumount,auto)
Ok, so it's not subsumed under any other filesystem. I'll change that
in CVS to handle NcFsd identical to NWFS.
$ /usr/lib/csih/getVolInfo /cygdrive/j
Device Type : 7
Characteristics : 30
Volume Name :<VOL_DEVEL>
Serial Number : 1549160268
Max Filenamelength : 255
Filesystemname :<NcFsd>
Flags : a2
FILE_CASE_SENSITIVE_SEARCH : FALSE
FILE_CASE_PRESERVED_NAMES : TRUE
FILE_UNICODE_ON_DISK : FALSE
FILE_PERSISTENT_ACLS : FALSE
FILE_FILE_COMPRESSION : FALSE
FILE_VOLUME_QUOTAS : TRUE
FILE_SUPPORTS_SPARSE_FILES : FALSE
FILE_SUPPORTS_REPARSE_POINTS: TRUE
FILE_SUPPORTS_REMOTE_STORAGE: FALSE
FILE_VOLUME_IS_COMPRESSED : FALSE
FILE_SUPPORTS_OBJECT_IDS : FALSE
FILE_SUPPORTS_ENCRYPTION : FALSE
FILE_NAMED_STREAMS : FALSE
FILE_READ_ONLY_VOLUME : FALSE
FILE_SEQUENTIAL_WRITE_ONCE : FALSE
FILE_SUPPORTS_TRANSACTIONS : FALSE
Thanks.
The rest of your questions I will answer as soon as the new snapshot
is available.
Are you ok if I send you an URL to a test DLL via PM for this issue?
I would add the "handle NcFsd as NWFS" as well to this DLL, otherwise
it would be identical to the latest snapshot, which should be available
now, btw.