adding version to the upcall
to determine that the daemon has restarted -- rather that daemon is receiving upcalls from the kernel that were processed by the old instance of the daemon -- add a version to the upcall mechanism. when daemon starts up it generates a version number (just a timestamp). it passes this value to the driver on start up via "start_ioctl" downcall. the driver saves that value in its device extensions. it uses that value in the mount and shtudown upcalls. when daemon replies to the mount command it again sends its version as a part of the reply. this reply is stored in driver;s netroot extensions. the driver uses netroot's value in each upcall to the daemon. if the daemon receives an upcall for an operation where the included version does not equal to the its current version, it fails the upcall (error_code=116). a restart of the daemon would change driver's device extension value which the driver will then use in the new mount upcalls that would establish new sessions. then the correct daemon version would be returned as a part of the mount downcalled and saved in the netroot.
This commit is contained in:
Olga Kornievskaia
unknown
parent
765fb43156
commit
a25a5221d9
7 changed files with 101 additions and 35 deletions
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@ -107,6 +107,7 @@ typedef enum _nfs41_updowncall_state {
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} nfs41_updowncall_state;
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typedef struct _updowncall_entry {
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DWORD version;
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DWORD xid;
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DWORD opcode;
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NTSTATUS status;
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@ -284,6 +285,7 @@ typedef struct _NFS41_NETROOT_EXTENSION {
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NODE_TYPE_CODE NodeTypeCode;
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NODE_BYTE_SIZE NodeByteSize;
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HANDLE session;
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DWORD nfs41d_version;
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} NFS41_NETROOT_EXTENSION, *PNFS41_NETROOT_EXTENSION;
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#define NFS41GetNetRootExtension(pNetRoot) \
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(((pNetRoot) == NULL) ? NULL : (PNFS41_NETROOT_EXTENSION)((pNetRoot)->Context))
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@ -345,6 +347,7 @@ typedef struct _NFS41_DEVICE_EXTENSION {
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PRDBSS_DEVICE_OBJECT DeviceObject;
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ULONG ActiveNodes;
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HANDLE SharedMemorySection;
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DWORD nfs41d_version;
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} NFS41_DEVICE_EXTENSION, *PNFS41_DEVICE_EXTENSION;
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#define NFS41GetDeviceExtension(RxContext,pExt) \
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@ -452,18 +455,21 @@ NTSTATUS marshal_nfs41_header(nfs41_updowncall_entry *entry,
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ULONG header_len = 0;
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unsigned char *tmp = buf;
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header_len = sizeof(entry->xid) + sizeof(entry->opcode);
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header_len = sizeof(entry->version) + sizeof(entry->xid) + sizeof(entry->opcode);
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if (header_len > buf_len) {
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status = STATUS_INSUFFICIENT_RESOURCES;
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goto out;
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}
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else
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*len = header_len;
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RtlCopyMemory(tmp, &entry->version, sizeof(entry->version));
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tmp += sizeof(DWORD);
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RtlCopyMemory(tmp, &entry->xid, sizeof(entry->xid));
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tmp += sizeof(xid);
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RtlCopyMemory(tmp, &entry->opcode, sizeof(entry->opcode));
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DbgP("[upcall] entry=%p xid=%d opcode=%d\n", entry, entry->xid, entry->opcode);
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DbgP("[upcall] entry=%p xid=%d opcode=%d version=%d\n", entry, entry->xid,
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entry->opcode, entry->version);
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out:
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return status;
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}
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@ -1359,7 +1365,9 @@ nfs41_downcall (
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switch (tmp->opcode) {
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case NFS41_MOUNT:
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RtlCopyMemory(&cur->u.Mount.session, buf, sizeof(HANDLE));
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DbgP("[mount] session pointer 0x%x\n", cur->u.Mount.session);
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buf += sizeof(HANDLE);
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RtlCopyMemory(&cur->version, buf, sizeof(DWORD));
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DbgP("[mount] session pointer 0x%x version %d\n", cur->u.Mount.session, cur->version);
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break;
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case NFS41_WRITE:
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case NFS41_READ:
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@ -1472,7 +1480,7 @@ out:
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return status;
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}
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NTSTATUS nfs41_shutdown_daemon()
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NTSTATUS nfs41_shutdown_daemon(DWORD version)
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{
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NTSTATUS status = STATUS_SUCCESS;
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nfs41_updowncall_entry *entry = NULL;
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@ -1481,6 +1489,7 @@ NTSTATUS nfs41_shutdown_daemon()
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status = nfs41_UpcallCreate(NFS41_SHUTDOWN, &entry);
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if (status)
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goto out;
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entry->version = version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -1723,7 +1732,7 @@ out:
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return status;
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}
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NTSTATUS nfs41_unmount(HANDLE session)
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NTSTATUS nfs41_unmount(HANDLE session, DWORD version)
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{
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NTSTATUS status = STATUS_INSUFFICIENT_RESOURCES;
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nfs41_updowncall_entry *entry;
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@ -1733,6 +1742,7 @@ NTSTATUS nfs41_unmount(HANDLE session)
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if (status)
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goto out;
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entry->u.Mount.session = session;
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entry->version = version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -1812,6 +1822,10 @@ NTSTATUS nfs41_DevFcbXXXControlFile(
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PLOWIO_CONTEXT io_ctx = &RxContext->LowIoContext;
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ULONG fsop = io_ctx->ParamsFor.FsCtl.FsControlCode;
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ULONG state;
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ULONG in_len = io_ctx->ParamsFor.IoCtl.InputBufferLength;
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DWORD *buf = io_ctx->ParamsFor.IoCtl.pInputBuffer;
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NFS41GetDeviceExtension(RxContext, DevExt);
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DWORD nfs41d_version = 0;
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//DbgEn();
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@ -1866,6 +1880,12 @@ NTSTATUS nfs41_DevFcbXXXControlFile(
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break;
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case IOCTL_NFS41_START:
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print_driver_state(nfs41_start_state);
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if (in_len >= sizeof(DWORD)) {
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RtlCopyMemory(&nfs41d_version, buf, sizeof(DWORD));
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DbgP("NFS41 Daemon sent start request with version %d\n", nfs41d_version);
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DbgP("Currently used NFS41 Daemon version is %d\n", DevExt->nfs41d_version);
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DevExt->nfs41d_version = nfs41d_version;
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}
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switch(nfs41_start_state) {
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case NFS41_START_DRIVER_STARTABLE:
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(nfs41_start_driver_state)InterlockedCompareExchange(
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@ -1893,7 +1913,7 @@ NTSTATUS nfs41_DevFcbXXXControlFile(
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break;
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case IOCTL_NFS41_STOP:
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if (nfs41_start_state == NFS41_START_DRIVER_STARTED)
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nfs41_shutdown_daemon();
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nfs41_shutdown_daemon(DevExt->nfs41d_version);
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if (RxContext->RxDeviceObject->NumberOfActiveFcbs > 0) {
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DbgP("device has open handles %d\n",
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RxContext->RxDeviceObject->NumberOfActiveFcbs);
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@ -2058,7 +2078,8 @@ static NTSTATUS map_mount_errors(DWORD status)
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}
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}
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NTSTATUS nfs41_mount(PUNICODE_STRING srv_name, PUNICODE_STRING root, PHANDLE session)
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NTSTATUS nfs41_mount(PUNICODE_STRING srv_name, PUNICODE_STRING root,
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PHANDLE session, DWORD *version)
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{
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NTSTATUS status = STATUS_INSUFFICIENT_RESOURCES;
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nfs41_updowncall_entry *entry;
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@ -2069,6 +2090,7 @@ NTSTATUS nfs41_mount(PUNICODE_STRING srv_name, PUNICODE_STRING root, PHANDLE ses
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goto out;
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entry->u.Mount.srv_name = srv_name;
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entry->u.Mount.root = root;
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entry->version = *version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -2078,6 +2100,8 @@ NTSTATUS nfs41_mount(PUNICODE_STRING srv_name, PUNICODE_STRING root, PHANDLE ses
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/* map windows ERRORs to NTSTATUS */
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status = map_mount_errors(entry->status);
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if (status == STATUS_SUCCESS)
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*version = entry->version;
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RxFreePool(entry);
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out:
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DbgEx();
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@ -2253,7 +2277,8 @@ NTSTATUS nfs41_CreateVNetRoot(
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NFS41GetVNetRootExtension(pVNetRoot);
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(pNetRoot);
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NFS41GetDeviceExtension(pCreateNetRootContext->RxContext,DevExt);
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DWORD nfs41d_version = DevExt->nfs41d_version;
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ASSERT((NodeType(pNetRoot) == RDBSS_NTC_NETROOT) &&
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(NodeType(pNetRoot->pSrvCall) == RDBSS_NTC_SRVCALL));
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@ -2317,10 +2342,10 @@ NTSTATUS nfs41_CreateVNetRoot(
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DbgP("Server Name %wZ Mount Point %wZ\n",
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&Config.SrvName, &Config.MntPt);
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status = nfs41_mount(&Config.SrvName, &Config.MntPt,
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&pVNetRootContext->session);
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&pVNetRootContext->session, &nfs41d_version);
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if (status != STATUS_SUCCESS)
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goto out;
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pNetRootContext->nfs41d_version = nfs41d_version;
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pNetRootContext->session = pVNetRootContext->session;
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DbgP("Saving new session 0x%x\n", pVNetRootContext->session);
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@ -2409,7 +2434,7 @@ NTSTATUS nfs41_FinalizeNetRoot(
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension((PMRX_NET_ROOT)pNetRoot);
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nfs41_updowncall_entry *tmp;
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DbgEn();
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print_net_root(1, pNetRoot);
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@ -2429,7 +2454,7 @@ NTSTATUS nfs41_FinalizeNetRoot(
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goto out;
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}
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status = nfs41_unmount(pNetRootContext->session);
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status = nfs41_unmount(pNetRootContext->session, pNetRootContext->nfs41d_version);
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if (status) {
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print_error("nfs41_mount failed with %d\n", status);
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goto out;
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@ -2608,6 +2633,7 @@ NTSTATUS nfs41_Create(
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entry->u.Open.disp = params.Disposition;
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entry->u.Open.copts = params.CreateOptions;
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entry->u.Open.session = pVNetRootContext->session;
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entry->version = pNetRootContext->nfs41d_version;
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if (isDataAccess(params.DesiredAccess))
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entry->u.Open.open_owner_id = get_next_open_owner();
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// if we are creating a file check if nfsv3attributes were passed in
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@ -2906,6 +2932,8 @@ NTSTATUS nfs41_CloseSrvOpen (
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PNFS41_V_NET_ROOT_EXTENSION pVNetRootContext =
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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PNFS41_FCB nfs41_fcb = (PNFS41_FCB)(RxContext->pFcb)->Context;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_close_args(RxContext);
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@ -2915,6 +2943,7 @@ NTSTATUS nfs41_CloseSrvOpen (
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goto out;
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entry->u.Close.open_state = nfs41_fobx->nfs41_open_state;
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entry->u.Close.session = pVNetRootContext->session;
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entry->version = pNetRootContext->nfs41d_version;
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if (!RxContext->pFcb->OpenCount) {
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entry->u.Close.remove = nfs41_fcb->StandardInfo.DeletePending;
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entry->u.Close.renamed = nfs41_fcb->Renamed;
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@ -3040,6 +3069,8 @@ NTSTATUS nfs41_QueryDirectory (
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__notnull PMRX_SRV_OPEN SrvOpen = RxContext->pRelevantSrvOpen;
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PNFS41_V_NET_ROOT_EXTENSION pVNetRootContext =
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_querydir_args(RxContext);
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@ -3071,6 +3102,7 @@ NTSTATUS nfs41_QueryDirectory (
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entry->u.QueryFile.restart_scan = RxContext->QueryDirectory.RestartScan;
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entry->u.QueryFile.return_single = RxContext->QueryDirectory.ReturnSingleEntry;
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entry->u.QueryFile.session = pVNetRootContext->session;
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entry->version = pNetRootContext->nfs41d_version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -3132,6 +3164,8 @@ NTSTATUS nfs41_QueryVolumeInformation (
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PNFS41_V_NET_ROOT_EXTENSION pVNetRootContext =
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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nfs41_updowncall_entry *entry;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_queryvolume_args(RxContext);
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@ -3214,6 +3248,7 @@ NTSTATUS nfs41_QueryVolumeInformation (
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entry->u.Volume.query = InfoClass;
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entry->u.Volume.buf = RxContext->Info.Buffer;
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entry->u.Volume.buf_len = RxContext->Info.LengthRemaining;
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entry->version = pNetRootContext->nfs41d_version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -3400,6 +3435,8 @@ NTSTATUS nfs41_SetEaInformation (
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PFILE_FULL_EA_INFORMATION eainfo =
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(PFILE_FULL_EA_INFORMATION)RxContext->Info.Buffer;
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nfs3_attrs *attrs = NULL;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_debug_header(RxContext);
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@ -3418,6 +3455,7 @@ NTSTATUS nfs41_SetEaInformation (
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entry->u.SetEa.open_state = nfs41_fobx->nfs41_open_state;
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entry->u.SetEa.session = pVNetRootContext->session;
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entry->u.SetEa.mode = attrs->mode;
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entry->version = pNetRootContext->nfs41d_version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -3505,6 +3543,8 @@ NTSTATUS nfs41_QueryFileInformation (
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PNFS41_V_NET_ROOT_EXTENSION pVNetRootContext =
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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PNFS41_FCB nfs41_fcb = (PNFS41_FCB)(RxContext->pFcb)->Context;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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switch (InfoClass) {
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@ -3566,6 +3606,7 @@ NTSTATUS nfs41_QueryFileInformation (
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entry->u.QueryFile.buf = RxContext->Info.Buffer;
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entry->u.QueryFile.buf_len = RxContext->Info.LengthRemaining;
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entry->u.QueryFile.session = pVNetRootContext->session;
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entry->version = pNetRootContext->nfs41d_version;
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if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
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status = STATUS_INTERNAL_ERROR;
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@ -3673,6 +3714,8 @@ NTSTATUS nfs41_SetFileInformation (
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PNFS41_FCB nfs41_fcb = (PNFS41_FCB)(RxContext->pFcb)->Context;
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FILE_RENAME_INFORMATION rinfo;
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PFILE_OBJECT fo = RxContext->CurrentIrpSp->FileObject;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_setfile_args(RxContext);
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@ -3753,6 +3796,8 @@ NTSTATUS nfs41_SetFileInformation (
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entry->u.SetFile.open_state = nfs41_fobx->nfs41_open_state;
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entry->u.SetFile.filename = FileName;
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entry->u.SetFile.InfoClass = InfoClass;
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entry->version = pNetRootContext->nfs41d_version;
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switch(InfoClass) {
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case FileAllocationInformation:
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case FileEndOfFileInformation:
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@ -3928,6 +3973,8 @@ NTSTATUS nfs41_Read (
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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PNFS41_FCB nfs41_fcb = (PNFS41_FCB)(RxContext->pFcb)->Context;
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BOOLEAN async = FALSE;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_readwrite_args(RxContext);
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@ -3940,6 +3987,7 @@ NTSTATUS nfs41_Read (
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entry->u.ReadWrite.len = LowIoContext->ParamsFor.ReadWrite.ByteCount;
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entry->u.ReadWrite.offset = LowIoContext->ParamsFor.ReadWrite.ByteOffset;
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entry->u.ReadWrite.session = pVNetRootContext->session;
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entry->version = pNetRootContext->nfs41d_version;
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if (FlagOn(RxContext->CurrentIrpSp->FileObject->Flags, FO_SYNCHRONOUS_IO) == FALSE) {
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entry->u.ReadWrite.rxcontext = RxContext;
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async = entry->async_op = TRUE;
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@ -3990,6 +4038,8 @@ NTSTATUS nfs41_Write (
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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PNFS41_FCB nfs41_fcb = (PNFS41_FCB)(RxContext->pFcb)->Context;
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BOOLEAN async = FALSE;
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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DbgEn();
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print_readwrite_args(RxContext);
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@ -4002,6 +4052,8 @@ NTSTATUS nfs41_Write (
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entry->u.ReadWrite.len = LowIoContext->ParamsFor.ReadWrite.ByteCount;
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entry->u.ReadWrite.offset = LowIoContext->ParamsFor.ReadWrite.ByteOffset;
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entry->u.ReadWrite.session = pVNetRootContext->session;
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entry->version = pNetRootContext->nfs41d_version;
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if (FlagOn(RxContext->CurrentIrpSp->FileObject->Flags, FO_SYNCHRONOUS_IO) == FALSE) {
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entry->u.ReadWrite.rxcontext = RxContext;
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async = entry->async_op = TRUE;
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@ -4122,6 +4174,8 @@ NTSTATUS nfs41_Lock(
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NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
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const ULONG flags = LowIoContext->ParamsFor.Locks.Flags;
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LARGE_INTEGER poll_delay = {0};
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PNFS41_NETROOT_EXTENSION pNetRootContext =
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NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
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||||
DbgEn();
|
||||
print_lock_args(RxContext);
|
||||
|
|
@ -4138,6 +4192,7 @@ NTSTATUS nfs41_Lock(
|
|||
entry->u.Lock.length = LowIoContext->ParamsFor.Locks.Length;
|
||||
entry->u.Lock.exclusive = BooleanFlagOn(flags, SL_EXCLUSIVE_LOCK);
|
||||
entry->u.Lock.blocking = !BooleanFlagOn(flags, SL_FAIL_IMMEDIATELY);
|
||||
entry->version = pNetRootContext->nfs41d_version;
|
||||
|
||||
retry_upcall:
|
||||
if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
|
||||
|
|
@ -4203,6 +4258,8 @@ NTSTATUS nfs41_Unlock(
|
|||
__notnull PMRX_SRV_OPEN SrvOpen = RxContext->pRelevantSrvOpen;
|
||||
PNFS41_V_NET_ROOT_EXTENSION pVNetRootContext =
|
||||
NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
|
||||
PNFS41_NETROOT_EXTENSION pNetRootContext =
|
||||
NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
|
||||
|
||||
DbgEn();
|
||||
print_lock_args(RxContext);
|
||||
|
|
@ -4215,6 +4272,7 @@ NTSTATUS nfs41_Unlock(
|
|||
goto out;
|
||||
entry->u.Unlock.open_state = nfs41_fobx->nfs41_open_state;
|
||||
entry->u.Unlock.session = pVNetRootContext->session;
|
||||
entry->version = pNetRootContext->nfs41d_version;
|
||||
|
||||
if (LowIoContext->Operation == LOWIO_OP_UNLOCK_MULTIPLE) {
|
||||
entry->u.Unlock.count = unlock_list_count(
|
||||
|
|
@ -4296,6 +4354,8 @@ static NTSTATUS nfs41_SetReparsePoint(
|
|||
PNFS41_V_NET_ROOT_EXTENSION VNetRoot = NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
|
||||
nfs41_updowncall_entry *entry;
|
||||
NTSTATUS status;
|
||||
PNFS41_NETROOT_EXTENSION pNetRootContext =
|
||||
NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
|
||||
|
||||
DbgEn();
|
||||
print_reparse_buffer(Reparse);
|
||||
|
|
@ -4319,6 +4379,7 @@ static NTSTATUS nfs41_SetReparsePoint(
|
|||
entry->u.Symlink.filename = SrvOpen->pAlreadyPrefixedName;
|
||||
entry->u.Symlink.target = &TargetName;
|
||||
entry->u.Symlink.set = TRUE;
|
||||
entry->version = pNetRootContext->nfs41d_version;
|
||||
|
||||
if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
|
||||
status = STATUS_INTERNAL_ERROR;
|
||||
|
|
@ -4343,6 +4404,8 @@ static NTSTATUS nfs41_GetReparsePoint(
|
|||
const USHORT HeaderLen = FIELD_OFFSET(REPARSE_DATA_BUFFER,
|
||||
SymbolicLinkReparseBuffer.PathBuffer);
|
||||
NTSTATUS status;
|
||||
PNFS41_NETROOT_EXTENSION pNetRootContext =
|
||||
NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
|
||||
|
||||
DbgEn();
|
||||
|
||||
|
|
@ -4371,6 +4434,7 @@ static NTSTATUS nfs41_GetReparsePoint(
|
|||
entry->u.Symlink.filename = SrvOpen->pAlreadyPrefixedName;
|
||||
entry->u.Symlink.target = &TargetName;
|
||||
entry->u.Symlink.set = FALSE;
|
||||
entry->version = pNetRootContext->nfs41d_version;
|
||||
|
||||
if (nfs41_UpcallWaitForReply(entry) != STATUS_SUCCESS) {
|
||||
status = STATUS_INTERNAL_ERROR;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue