evin/ms-nfs41-client
3
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

data cache invalidation on delegation recalls

Browse source 
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.
This commit is contained in:
Olga Kornievskaia 2012-01-19 19:46:03 -05:00
parent 909947f07a
commit c22c2b6080
6 changed files with 107 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

38
sys/nfs41_driver.c
View file

@ -174,10 +174,12 @@ typedef struct _updowncall_entry {
LONG open_owner_id;
DWORD mode;
LONGLONG changeattr;
HANDLE srv_open;
BOOLEAN symlink_embedded;
} Open;
struct {
PUNICODE_STRING filename;
HANDLE srv_open;
BOOLEAN remove;
BOOLEAN renamed;
} Close;
@ -615,7 +617,7 @@ NTSTATUS marshal_nfs41_open(
else
tmp += *len;
header_len = *len + length_as_ansi(entry->u.Open.filename) +
5 * sizeof(ULONG) + sizeof(LONG) + sizeof(DWORD);
5 * sizeof(ULONG) + sizeof(LONG) + sizeof(DWORD) + sizeof(HANDLE);
if (header_len > buf_len) {
status = STATUS_INSUFFICIENT_RESOURCES;
goto out;
@ -638,14 +640,17 @@ NTSTATUS marshal_nfs41_open(
sizeof(entry->u.Open.open_owner_id));
tmp += sizeof(entry->u.Open.open_owner_id);
RtlCopyMemory(tmp, &entry->u.Open.mode, sizeof(DWORD));
tmp += sizeof(DWORD);
RtlCopyMemory(tmp, &entry->u.Open.srv_open, sizeof(HANDLE));
*len = header_len;
DbgP("marshal_nfs41_open: mask=0x%x mode=0x%x attrs=0x%x opts=0x%x "
"dispo=0x%x open_owner_id=0x%x mode=%o\n", entry->u.Open.access_mask,
entry->u.Open.access_mode, entry->u.Open.attrs,
entry->u.Open.copts, entry->u.Open.disp,
entry->u.Open.open_owner_id, entry->u.Open.mode);
"dispo=0x%x open_owner_id=0x%x mode=%o srv_open=%p\n",
entry->u.Open.access_mask, entry->u.Open.access_mode,
entry->u.Open.attrs, entry->u.Open.copts, entry->u.Open.disp,
entry->u.Open.open_owner_id, entry->u.Open.mode,
entry->u.Open.srv_open);
out:
DbgEx();
return status;
@ -812,7 +817,7 @@ NTSTATUS marshal_nfs41_close(
tmp += *len;
header_len = *len + sizeof(BOOLEAN);
header_len = *len + sizeof(BOOLEAN) + sizeof(HANDLE);
if (entry->u.Close.remove)
header_len += length_as_ansi(entry->u.Close.filename) +
sizeof(BOOLEAN);
@ -822,8 +827,10 @@ NTSTATUS marshal_nfs41_close(
goto out;
}
RtlCopyMemory(tmp, &entry->u.Close.remove, sizeof(BOOLEAN));
tmp += sizeof(BOOLEAN);
RtlCopyMemory(tmp, &entry->u.Close.srv_open, sizeof(HANDLE));
if (entry->u.Close.remove) {
tmp += sizeof(BOOLEAN);
tmp += sizeof(HANDLE);
status = marshall_unicode_as_ansi(&tmp, entry->u.Close.filename);
if (status) goto out;
RtlCopyMemory(tmp, &entry->u.Close.renamed, sizeof(BOOLEAN));
@ -831,8 +838,9 @@ NTSTATUS marshal_nfs41_close(
*len = header_len;
DbgP("marshal_nfs41_close: remove=%d renamed=%d filename=%wZ\n",
entry->u.Close.remove, entry->u.Close.renamed, entry->u.Close.filename);
DbgP("marshal_nfs41_close: remove=%d srv_open=%p renamed=%d "
"filename=%wZ\n", entry->u.Close.remove, entry->u.Close.srv_open,
entry->u.Close.renamed, entry->u.Close.filename);
out:
DbgEx();
return status;
@ -1229,7 +1237,17 @@ NTSTATUS nfs41_invalidate_cache (
IN PRX_CONTEXT RxContext)
{
NTSTATUS status = STATUS_SUCCESS;
PLOWIO_CONTEXT LowIoContext = &RxContext->LowIoContext;
unsigned char *buf = LowIoContext->ParamsFor.IoCtl.pInputBuffer;
ULONG flag = DISABLE_CACHING;
PMRX_SRV_OPEN srv_open;
DbgEn();
RtlCopyMemory(&srv_open, buf, sizeof(HANDLE));
DbgP("nfs41_invalidate_cache: received srv_open=%p\n", srv_open);
if (MmIsAddressValid(srv_open))
RxChangeBufferingState((PSRV_OPEN)srv_open, ULongToPtr(flag), 1);
DbgEx();
return status;
}
@ -3253,6 +3271,7 @@ NTSTATUS nfs41_Create(
entry->u.Open.attrs = params.FileAttributes;
entry->u.Open.disp = params.Disposition;
entry->u.Open.copts = params.CreateOptions;
entry->u.Open.srv_open = SrvOpen;
if (isDataAccess(params.DesiredAccess))
entry->u.Open.open_owner_id = InterlockedIncrement(&open_owner_id);
// if we are creating a file check if nfsv3attributes were passed in
@ -3581,6 +3600,7 @@ NTSTATUS nfs41_CloseSrvOpen(
pNetRootContext->nfs41d_version, &entry);
if (status)
goto out;
entry->u.Close.srv_open = SrvOpen;
if (!RxContext->pFcb->OpenCount) {
entry->u.Close.remove = nfs41_fcb->StandardInfo.DeletePending;
entry->u.Close.renamed = nfs41_fcb->Renamed;