windows can send a create irp with dispostion representing creation
of the file and specify DesiredAccess of 0.
we were treating no data access as lookup but in this case, we still
need to create a file. so send an open with a read access and
request no delegation to be returned.
adding -o timeout=value (in sec) mount option to override a default
timeout value for the upcalls for non-io upcalls. Default timeout is
at least the lease_time seconds of an established mount or 20secs.
read/write upcall also take into account number of bytes for the request
and 100MB/s network speed and 100MB/s disk speed
changing the code to keeping track of fcbs and not srv_opens.
problem of keeping srv_opens was that we could get an open for
attribute which will then do a setacl which will modify a change
attribute of the file but because the open is not for reading
data we won't have it on the list of opens.
given a delegation type received on open, set buffering flags accordingly.
however, provide -o nocoherence mount options that will enable read/write
buffering regardless
when we receive a delegation recall, we need to make a downcall
to the kernel and change a buffering/caching policy on this file.
on each open and close we pass an srv_open pointer to the nfsd to
keep in case it receives a cb_recall. we store srv_open in the
delegation state if we got a delegation.
when we didn't create a mount, we don't have a security context to
destroy. in vnetroot creation, initialize session to invalid_handle.
if we fail to mount, then before deleting security context in
nfs41_FinalizeVNetRoot check that session is not invalid_handle.
when nobody is waiting for the upcall. if it was read/write upcall
unlock readwrite mdl. if it was a readdir upcall, unlock readdir
mdl and also free it.
none (or all) functions should be static. making all function non-static.
consistent format of function args (ie each argument on its own line).
adding __notnull for our fcb, fobx, vnetroot, netroot context pointers.
removed some non-implemented function from our redirector functions table.
left some no-op functions that are just required: flush, isvaliddir,
deallocatefcb. not sure about completebufferingstate function.
80char lines corrections
nfs41_np.c:
NPAddConnection3() was overwriting status=WN_BAD_NETNAME on any errors from DeviceIoControl()
nfs41_driver.c:
GetConnectionHandle() was only returning the handle, and throwing away the return value from ZwCreateFile()
map_mount_errors() was missing a mapping from ERROR_BAD_NET_NAME to STATUS_BAD_NETWORK_NAME
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
