NTSTATUS
NTAPI
NpGetClientSecurityContext(IN ULONG NamedPipeEnd,
IN PNP_CCB Ccb,
IN PETHREAD Thread,
IN PSECURITY_CLIENT_CONTEXT *Context)
{
PSECURITY_CLIENT_CONTEXT NewContext;
NTSTATUS Status;
PAGED_CODE();
if (NamedPipeEnd == FILE_PIPE_SERVER_END || Ccb->ClientQos.ContextTrackingMode != SECURITY_DYNAMIC_TRACKING)
{
NewContext = NULL;
Status = STATUS_SUCCESS;
}
else
{
NewContext = ExAllocatePoolWithQuotaTag(PagedPool | POOL_QUOTA_FAIL_INSTEAD_OF_RAISE,
sizeof(*NewContext),
NPFS_CLIENT_SEC_CTX_TAG);
if (!NewContext) return STATUS_INSUFFICIENT_RESOURCES;
Status = SeCreateClientSecurity(Thread, &Ccb->ClientQos, 0, NewContext);
if (!NT_SUCCESS(Status))
{
ExFreePool(NewContext);
NewContext = NULL;
}
}
*Context = NewContext;
return Status;
}
NTSTATUS
NTAPI
NpInitializeSecurity(IN PNP_CCB Ccb,
IN PSECURITY_QUALITY_OF_SERVICE SecurityQos,
IN PETHREAD Thread)
{
PSECURITY_CLIENT_CONTEXT ClientContext;
NTSTATUS Status;
PAGED_CODE();
if (SecurityQos)
{
Ccb->ClientQos = *SecurityQos;
}
else
{
Ccb->ClientQos.Length = sizeof(Ccb->ClientQos);
Ccb->ClientQos.ImpersonationLevel = SecurityImpersonation;
Ccb->ClientQos.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
Ccb->ClientQos.EffectiveOnly = TRUE;
}
NpUninitializeSecurity(Ccb);
if (Ccb->ClientQos.ContextTrackingMode == SECURITY_DYNAMIC_TRACKING)
{
Status = STATUS_SUCCESS;
Ccb->ClientContext = NULL;
return Status;
}
ClientContext = ExAllocatePoolWithQuotaTag(PagedPool | POOL_QUOTA_FAIL_INSTEAD_OF_RAISE,
sizeof(*ClientContext),
NPFS_CLIENT_SEC_CTX_TAG);
Ccb->ClientContext = ClientContext;
if (!ClientContext) return STATUS_INSUFFICIENT_RESOURCES;
Status = SeCreateClientSecurity(Thread, &Ccb->ClientQos, 0, ClientContext);
if (!NT_SUCCESS(Status))
{
ExFreePool(Ccb->ClientContext);
Ccb->ClientContext = NULL;
}
return Status;
}
NTSTATUS
NtImpersonateThread(
__in HANDLE ServerThreadHandle,
__in HANDLE ClientThreadHandle,
__in PSECURITY_QUALITY_OF_SERVICE SecurityQos
)
/*++
Routine Description:
This routine is used to cause the server thread to impersonate the client
thread. The impersonation is done according to the specified quality
of service parameters.
Arguments:
ServerThreadHandle - Is a handle to the server thread (the impersonator, or
doing the impersonation). This handle must be open for
THREAD_IMPERSONATE access.
ClientThreadHandle - Is a handle to the Client thread (the impersonatee, or
one being impersonated). This handle must be open for
THREAD_DIRECT_IMPERSONATION access.
SecurityQos - A pointer to security quality of service information
indicating what form of impersonation is to be performed.
Return Value:
STATUS_SUCCESS - Indicates the call completed successfully.
--*/
{
KPROCESSOR_MODE PreviousMode;
NTSTATUS Status;
PETHREAD ClientThread, ServerThread;
SECURITY_QUALITY_OF_SERVICE CapturedQos;
SECURITY_CLIENT_CONTEXT ClientSecurityContext;
//
// Get previous processor mode and probe and capture arguments if necessary
//
PreviousMode = KeGetPreviousMode();
try {
if (PreviousMode != KernelMode) {
ProbeForReadSmallStructure (SecurityQos,
sizeof (SECURITY_QUALITY_OF_SERVICE),
sizeof (ULONG));
}
CapturedQos = *SecurityQos;
} except (ExSystemExceptionFilter ()) {
return GetExceptionCode ();
}
//
// Reference the client thread, checking for appropriate access.
//
Status = ObReferenceObjectByHandle (ClientThreadHandle, // Handle
THREAD_DIRECT_IMPERSONATION, // DesiredAccess
PsThreadType, // ObjectType
PreviousMode, // AccessMode
&ClientThread, // Object
NULL); // GrantedAccess
if (!NT_SUCCESS (Status)) {
return Status;
}
//
// Reference the client thread, checking for appropriate access.
//
Status = ObReferenceObjectByHandle (ServerThreadHandle, // Handle
THREAD_IMPERSONATE, // DesiredAccess
PsThreadType, // ObjectType
PreviousMode, // AccessMode
&ServerThread, // Object
NULL); // GrantedAccess
if (!NT_SUCCESS (Status)) {
ObDereferenceObject (ClientThread);
return Status;
}
//
// Get the client's security context
//
Status = SeCreateClientSecurity (ClientThread, // ClientThread
&CapturedQos, // SecurityQos
FALSE, // ServerIsRemote
&ClientSecurityContext); // ClientContext
if (!NT_SUCCESS (Status)) {
ObDereferenceObject (ServerThread);
ObDereferenceObject (ClientThread);
return Status;
}
//
// Impersonate the client
//
Status = SeImpersonateClientEx (&ClientSecurityContext, ServerThread);
SeDeleteClientSecurity (&ClientSecurityContext);
//
// Done.
//
ObDereferenceObject (ServerThread);
ObDereferenceObject (ClientThread);
return Status ;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
NtSecureConnectPort(OUT PHANDLE PortHandle,
IN PUNICODE_STRING PortName,
IN PSECURITY_QUALITY_OF_SERVICE Qos,
IN OUT PPORT_VIEW ClientView OPTIONAL,
IN PSID ServerSid OPTIONAL,
IN OUT PREMOTE_PORT_VIEW ServerView OPTIONAL,
OUT PULONG MaxMessageLength OPTIONAL,
IN OUT PVOID ConnectionInformation OPTIONAL,
IN OUT PULONG ConnectionInformationLength OPTIONAL)
{
ULONG ConnectionInfoLength = 0;
PLPCP_PORT_OBJECT Port, ClientPort;
KPROCESSOR_MODE PreviousMode = KeGetPreviousMode();
NTSTATUS Status = STATUS_SUCCESS;
HANDLE Handle;
PVOID SectionToMap;
PLPCP_MESSAGE Message;
PLPCP_CONNECTION_MESSAGE ConnectMessage;
PETHREAD Thread = PsGetCurrentThread();
ULONG PortMessageLength;
LARGE_INTEGER SectionOffset;
PTOKEN Token;
PTOKEN_USER TokenUserInfo;
PAGED_CODE();
LPCTRACE(LPC_CONNECT_DEBUG,
"Name: %wZ. Qos: %p. Views: %p/%p. Sid: %p\n",
PortName,
Qos,
ClientView,
ServerView,
ServerSid);
/* Validate client view */
if ((ClientView) && (ClientView->Length != sizeof(PORT_VIEW)))
{
/* Fail */
return STATUS_INVALID_PARAMETER;
}
/* Validate server view */
if ((ServerView) && (ServerView->Length != sizeof(REMOTE_PORT_VIEW)))
{
/* Fail */
return STATUS_INVALID_PARAMETER;
}
/* Check if caller sent connection information length */
if (ConnectionInformationLength)
{
/* Retrieve the input length */
ConnectionInfoLength = *ConnectionInformationLength;
}
/* Get the port */
Status = ObReferenceObjectByName(PortName,
0,
NULL,
PORT_CONNECT,
LpcPortObjectType,
PreviousMode,
NULL,
(PVOID *)&Port);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to reference port '%wZ': 0x%lx\n", PortName, Status);
return Status;
}
/* This has to be a connection port */
if ((Port->Flags & LPCP_PORT_TYPE_MASK) != LPCP_CONNECTION_PORT)
{
/* It isn't, so fail */
ObDereferenceObject(Port);
return STATUS_INVALID_PORT_HANDLE;
}
/* Check if we have a SID */
if (ServerSid)
{
/* Make sure that we have a server */
if (Port->ServerProcess)
{
/* Get its token and query user information */
Token = PsReferencePrimaryToken(Port->ServerProcess);
//Status = SeQueryInformationToken(Token, TokenUser, (PVOID*)&TokenUserInfo);
// FIXME: Need SeQueryInformationToken
Status = STATUS_SUCCESS;
TokenUserInfo = ExAllocatePoolWithTag(PagedPool, sizeof(TOKEN_USER), TAG_SE);
TokenUserInfo->User.Sid = ServerSid;
PsDereferencePrimaryToken(Token);
/* Check for success */
if (NT_SUCCESS(Status))
{
/* Compare the SIDs */
if (!RtlEqualSid(ServerSid, TokenUserInfo->User.Sid))
{
/* Fail */
Status = STATUS_SERVER_SID_MISMATCH;
}
/* Free token information */
ExFreePoolWithTag(TokenUserInfo, TAG_SE);
}
}
else
{
/* Invalid SID */
Status = STATUS_SERVER_SID_MISMATCH;
}
/* Check if SID failed */
if (!NT_SUCCESS(Status))
{
/* Quit */
ObDereferenceObject(Port);
return Status;
}
}
/* Create the client port */
Status = ObCreateObject(PreviousMode,
LpcPortObjectType,
NULL,
PreviousMode,
NULL,
sizeof(LPCP_PORT_OBJECT),
0,
0,
(PVOID *)&ClientPort);
if (!NT_SUCCESS(Status))
{
/* Failed, dereference the server port and return */
ObDereferenceObject(Port);
return Status;
}
/* Setup the client port */
RtlZeroMemory(ClientPort, sizeof(LPCP_PORT_OBJECT));
ClientPort->Flags = LPCP_CLIENT_PORT;
ClientPort->ConnectionPort = Port;
ClientPort->MaxMessageLength = Port->MaxMessageLength;
ClientPort->SecurityQos = *Qos;
InitializeListHead(&ClientPort->LpcReplyChainHead);
InitializeListHead(&ClientPort->LpcDataInfoChainHead);
/* Check if we have dynamic security */
if (Qos->ContextTrackingMode == SECURITY_DYNAMIC_TRACKING)
{
/* Remember that */
ClientPort->Flags |= LPCP_SECURITY_DYNAMIC;
}
else
{
/* Create our own client security */
Status = SeCreateClientSecurity(Thread,
Qos,
FALSE,
&ClientPort->StaticSecurity);
if (!NT_SUCCESS(Status))
{
/* Security failed, dereference and return */
ObDereferenceObject(ClientPort);
return Status;
}
}
/* Initialize the port queue */
Status = LpcpInitializePortQueue(ClientPort);
if (!NT_SUCCESS(Status))
{
/* Failed */
ObDereferenceObject(ClientPort);
return Status;
}
/* Check if we have a client view */
if (ClientView)
{
/* Get the section handle */
Status = ObReferenceObjectByHandle(ClientView->SectionHandle,
SECTION_MAP_READ |
SECTION_MAP_WRITE,
MmSectionObjectType,
PreviousMode,
(PVOID*)&SectionToMap,
NULL);
if (!NT_SUCCESS(Status))
{
/* Fail */
ObDereferenceObject(Port);
return Status;
}
/* Set the section offset */
SectionOffset.QuadPart = ClientView->SectionOffset;
/* Map it */
Status = MmMapViewOfSection(SectionToMap,
PsGetCurrentProcess(),
&ClientPort->ClientSectionBase,
0,
0,
&SectionOffset,
&ClientView->ViewSize,
ViewUnmap,
0,
PAGE_READWRITE);
/* Update the offset */
ClientView->SectionOffset = SectionOffset.LowPart;
/* Check for failure */
if (!NT_SUCCESS(Status))
{
/* Fail */
ObDereferenceObject(SectionToMap);
ObDereferenceObject(Port);
return Status;
}
/* Update the base */
ClientView->ViewBase = ClientPort->ClientSectionBase;
/* Reference and remember the process */
ClientPort->MappingProcess = PsGetCurrentProcess();
ObReferenceObject(ClientPort->MappingProcess);
}
else
{
/* No section */
SectionToMap = NULL;
}
/* Normalize connection information */
if (ConnectionInfoLength > Port->MaxConnectionInfoLength)
{
/* Use the port's maximum allowed value */
ConnectionInfoLength = Port->MaxConnectionInfoLength;
}
/* Allocate a message from the port zone */
Message = LpcpAllocateFromPortZone();
if (!Message)
{
/* Fail if we couldn't allocate a message */
if (SectionToMap) ObDereferenceObject(SectionToMap);
ObDereferenceObject(ClientPort);
return STATUS_NO_MEMORY;
}
/* Set pointer to the connection message and fill in the CID */
ConnectMessage = (PLPCP_CONNECTION_MESSAGE)(Message + 1);
Message->Request.ClientId = Thread->Cid;
/* Check if we have a client view */
if (ClientView)
{
/* Set the view size */
Message->Request.ClientViewSize = ClientView->ViewSize;
/* Copy the client view and clear the server view */
RtlCopyMemory(&ConnectMessage->ClientView,
ClientView,
sizeof(PORT_VIEW));
RtlZeroMemory(&ConnectMessage->ServerView, sizeof(REMOTE_PORT_VIEW));
}
else
{
/* Set the size to 0 and clear the connect message */
Message->Request.ClientViewSize = 0;
RtlZeroMemory(ConnectMessage, sizeof(LPCP_CONNECTION_MESSAGE));
}
/* Set the section and client port. Port is NULL for now */
ConnectMessage->ClientPort = NULL;
ConnectMessage->SectionToMap = SectionToMap;
/* Set the data for the connection request message */
Message->Request.u1.s1.DataLength = (CSHORT)ConnectionInfoLength +
sizeof(LPCP_CONNECTION_MESSAGE);
Message->Request.u1.s1.TotalLength = sizeof(LPCP_MESSAGE) +
Message->Request.u1.s1.DataLength;
Message->Request.u2.s2.Type = LPC_CONNECTION_REQUEST;
/* Check if we have connection information */
if (ConnectionInformation)
{
/* Copy it in */
RtlCopyMemory(ConnectMessage + 1,
ConnectionInformation,
ConnectionInfoLength);
}
/* Acquire the port lock */
KeAcquireGuardedMutex(&LpcpLock);
/* Check if someone already deleted the port name */
if (Port->Flags & LPCP_NAME_DELETED)
{
/* Fail the request */
Status = STATUS_OBJECT_NAME_NOT_FOUND;
}
else
{
/* Associate no thread yet */
Message->RepliedToThread = NULL;
/* Generate the Message ID and set it */
Message->Request.MessageId = LpcpNextMessageId++;
if (!LpcpNextMessageId) LpcpNextMessageId = 1;
Thread->LpcReplyMessageId = Message->Request.MessageId;
/* Insert the message into the queue and thread chain */
InsertTailList(&Port->MsgQueue.ReceiveHead, &Message->Entry);
InsertTailList(&Port->LpcReplyChainHead, &Thread->LpcReplyChain);
Thread->LpcReplyMessage = Message;
/* Now we can finally reference the client port and link it*/
ObReferenceObject(ClientPort);
ConnectMessage->ClientPort = ClientPort;
/* Enter a critical region */
KeEnterCriticalRegion();
}
/* Add another reference to the port */
ObReferenceObject(Port);
/* Release the lock */
KeReleaseGuardedMutex(&LpcpLock);
/* Check for success */
if (NT_SUCCESS(Status))
{
LPCTRACE(LPC_CONNECT_DEBUG,
"Messages: %p/%p. Ports: %p/%p. Status: %lx\n",
Message,
ConnectMessage,
Port,
ClientPort,
Status);
/* If this is a waitable port, set the event */
if (Port->Flags & LPCP_WAITABLE_PORT) KeSetEvent(&Port->WaitEvent,
1,
FALSE);
/* Release the queue semaphore and leave the critical region */
LpcpCompleteWait(Port->MsgQueue.Semaphore);
KeLeaveCriticalRegion();
/* Now wait for a reply */
LpcpConnectWait(&Thread->LpcReplySemaphore, PreviousMode);
}
/* Check for failure */
if (!NT_SUCCESS(Status)) goto Cleanup;
/* Free the connection message */
SectionToMap = LpcpFreeConMsg(&Message, &ConnectMessage, Thread);
/* Check if we got a message back */
if (Message)
{
/* Check for new return length */
if ((Message->Request.u1.s1.DataLength -
sizeof(LPCP_CONNECTION_MESSAGE)) < ConnectionInfoLength)
{
/* Set new normalized connection length */
ConnectionInfoLength = Message->Request.u1.s1.DataLength -
sizeof(LPCP_CONNECTION_MESSAGE);
}
/* Check if we had connection information */
if (ConnectionInformation)
{
/* Check if we had a length pointer */
if (ConnectionInformationLength)
{
/* Return the length */
*ConnectionInformationLength = ConnectionInfoLength;
}
/* Return the connection information */
RtlCopyMemory(ConnectionInformation,
ConnectMessage + 1,
ConnectionInfoLength );
}
/* Make sure we had a connected port */
if (ClientPort->ConnectedPort)
{
/* Get the message length before the port might get killed */
PortMessageLength = Port->MaxMessageLength;
/* Insert the client port */
Status = ObInsertObject(ClientPort,
NULL,
PORT_ALL_ACCESS,
0,
(PVOID *)NULL,
&Handle);
if (NT_SUCCESS(Status))
{
/* Return the handle */
*PortHandle = Handle;
LPCTRACE(LPC_CONNECT_DEBUG,
"Handle: %p. Length: %lx\n",
Handle,
PortMessageLength);
/* Check if maximum length was requested */
if (MaxMessageLength) *MaxMessageLength = PortMessageLength;
/* Check if we had a client view */
if (ClientView)
{
/* Copy it back */
RtlCopyMemory(ClientView,
&ConnectMessage->ClientView,
sizeof(PORT_VIEW));
}
/* Check if we had a server view */
if (ServerView)
{
/* Copy it back */
RtlCopyMemory(ServerView,
&ConnectMessage->ServerView,
sizeof(REMOTE_PORT_VIEW));
}
}
}
else
{
/* No connection port, we failed */
if (SectionToMap) ObDereferenceObject(SectionToMap);
/* Acquire the lock */
KeAcquireGuardedMutex(&LpcpLock);
/* Check if it's because the name got deleted */
if (!(ClientPort->ConnectionPort) ||
(Port->Flags & LPCP_NAME_DELETED))
{
/* Set the correct status */
Status = STATUS_OBJECT_NAME_NOT_FOUND;
}
else
{
/* Otherwise, the caller refused us */
Status = STATUS_PORT_CONNECTION_REFUSED;
}
/* Release the lock */
KeReleaseGuardedMutex(&LpcpLock);
/* Kill the port */
ObDereferenceObject(ClientPort);
}
/* Free the message */
LpcpFreeToPortZone(Message, 0);
}
else
{
/* No reply message, fail */
if (SectionToMap) ObDereferenceObject(SectionToMap);
ObDereferenceObject(ClientPort);
Status = STATUS_PORT_CONNECTION_REFUSED;
}
/* Return status */
ObDereferenceObject(Port);
return Status;
Cleanup:
/* We failed, free the message */
SectionToMap = LpcpFreeConMsg(&Message, &ConnectMessage, Thread);
/* Check if the semaphore got signaled */
if (KeReadStateSemaphore(&Thread->LpcReplySemaphore))
{
/* Wait on it */
KeWaitForSingleObject(&Thread->LpcReplySemaphore,
WrExecutive,
KernelMode,
FALSE,
NULL);
}
/* Check if we had a message and free it */
if (Message) LpcpFreeToPortZone(Message, 0);
/* Dereference other objects */
if (SectionToMap) ObDereferenceObject(SectionToMap);
ObDereferenceObject(ClientPort);
/* Return status */
ObDereferenceObject(Port);
return Status;
}
//
// Check IOCTL_VFD_OPEN_IMAGE input parameters
//
NTSTATUS
VfdOpenCheck(
PDEVICE_EXTENSION DeviceExtension,
PVFD_IMAGE_INFO ImageInfo,
ULONG InputLength)
{
// Check media status
if (DeviceExtension->FileHandle ||
DeviceExtension->FileBuffer) {
VFDTRACE(VFDWARN, ("[VFD] image already opened.\n"));
return STATUS_DEVICE_BUSY;
}
// Check input parameter length
if (InputLength < sizeof(VFD_IMAGE_INFO) ||
InputLength < sizeof(VFD_IMAGE_INFO) + ImageInfo->NameLength)
{
return STATUS_INVALID_PARAMETER;
}
// Check input parameters
if (ImageInfo->MediaType == VFD_MEDIA_NONE ||
ImageInfo->MediaType >= VFD_MEDIA_MAX) {
VFDTRACE(VFDWARN, ("[VFD] invalid MediaType - %u.\n",
ImageInfo->MediaType));
return STATUS_INVALID_PARAMETER;
}
if (ImageInfo->DiskType == VFD_DISKTYPE_FILE &&
ImageInfo->NameLength == 0) {
VFDTRACE(VFDWARN,
("[VFD] File name required for VFD_DISKTYPE_FILE.\n"));
return STATUS_INVALID_PARAMETER;
}
// create a security context to match the calling process' context
// the driver thread uses this context to impersonate the client
// to open the specified image file
// if (ImageInfo->DiskType == VFD_DISKTYPE_FILE)
{
SECURITY_QUALITY_OF_SERVICE sqos;
if (DeviceExtension->SecurityContext != NULL) {
SeDeleteClientSecurity(DeviceExtension->SecurityContext);
}
else {
DeviceExtension->SecurityContext =
(PSECURITY_CLIENT_CONTEXT)ExAllocatePoolWithTag(
NonPagedPool, sizeof(SECURITY_CLIENT_CONTEXT), VFD_POOL_TAG);
}
RtlZeroMemory(&sqos, sizeof(SECURITY_QUALITY_OF_SERVICE));
sqos.Length = sizeof(SECURITY_QUALITY_OF_SERVICE);
sqos.ImpersonationLevel = SecurityImpersonation;
sqos.ContextTrackingMode = SECURITY_STATIC_TRACKING;
sqos.EffectiveOnly = FALSE;
SeCreateClientSecurity(
PsGetCurrentThread(), &sqos, FALSE,
DeviceExtension->SecurityContext);
}
return STATUS_SUCCESS;
}
NTSTATUS
FileDiskDeviceControl (
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
{
PDEVICE_EXTENSION device_extension;
PIO_STACK_LOCATION io_stack;
NTSTATUS status;
// 得到设备扩展
device_extension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
// 得到当前设备栈
io_stack = IoGetCurrentIrpStackLocation(Irp);
// 判断如果是还没有加载物理媒质就返回失败。但是
// IOCTL_FILE_DISK_OPEN_FILE是自定义的功能号，专
// 用来加载物理媒质的
if (!device_extension->media_in_device &&
io_stack->Parameters.DeviceIoControl.IoControlCode !=
IOCTL_FILE_DISK_OPEN_FILE)
{
Irp->IoStatus.Status = STATUS_NO_MEDIA_IN_DEVICE;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_NO_MEDIA_IN_DEVICE;
}
// 根据不同的功能号处理...
switch (io_stack->Parameters.DeviceIoControl.IoControlCode)
{
case IOCTL_FILE_DISK_OPEN_FILE:
{
SECURITY_QUALITY_OF_SERVICE security_quality_of_service;
if (device_extension->media_in_device)
{
KdPrint(("FileDisk: IOCTL_FILE_DISK_OPEN_FILE: Media already opened\n"));
status = STATUS_INVALID_DEVICE_REQUEST;
Irp->IoStatus.Information = 0;
break;
}
if (io_stack->Parameters.DeviceIoControl.InputBufferLength <
sizeof(OPEN_FILE_INFORMATION))
{
status = STATUS_INVALID_PARAMETER;
Irp->IoStatus.Information = 0;
break;
}
if (io_stack->Parameters.DeviceIoControl.InputBufferLength <
sizeof(OPEN_FILE_INFORMATION) +
((POPEN_FILE_INFORMATION)Irp->AssociatedIrp.SystemBuffer)->FileNameLength -
sizeof(UCHAR))
{
status = STATUS_INVALID_PARAMETER;
Irp->IoStatus.Information = 0;
break;
}
if (device_extension->security_client_context != NULL)
{
SeDeleteClientSecurity(device_extension->security_client_context);
}
else
{
device_extension->security_client_context =
ExAllocatePool(NonPagedPool, sizeof(SECURITY_CLIENT_CONTEXT));
}
RtlZeroMemory(&security_quality_of_service, sizeof(SECURITY_QUALITY_OF_SERVICE));
security_quality_of_service.Length = sizeof(SECURITY_QUALITY_OF_SERVICE);
security_quality_of_service.ImpersonationLevel = SecurityImpersonation;
security_quality_of_service.ContextTrackingMode = SECURITY_STATIC_TRACKING;
security_quality_of_service.EffectiveOnly = FALSE;
SeCreateClientSecurity(
PsGetCurrentThread(),
&security_quality_of_service,
FALSE,
device_extension->security_client_context
);
IoMarkIrpPending(Irp);
ExInterlockedInsertTailList(
&device_extension->list_head,
&Irp->Tail.Overlay.ListEntry,
&device_extension->list_lock
);
KeSetEvent(
&device_extension->request_event,
(KPRIORITY) 0,
FALSE
);
status = STATUS_PENDING;
break;
}
case IOCTL_FILE_DISK_CLOSE_FILE:
{
IoMarkIrpPending(Irp);
ExInterlockedInsertTailList(
&device_extension->list_head,
&Irp->Tail.Overlay.ListEntry,
&device_extension->list_lock
);
KeSetEvent(
&device_extension->request_event,
(KPRIORITY) 0,
FALSE
);
status = STATUS_PENDING;
break;
}
case IOCTL_FILE_DISK_QUERY_FILE:
{
POPEN_FILE_INFORMATION open_file_information;
if (io_stack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(OPEN_FILE_INFORMATION) + device_extension->file_name.Length - sizeof(UCHAR))
{
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
open_file_information = (POPEN_FILE_INFORMATION) Irp->AssociatedIrp.SystemBuffer;
open_file_information->FileSize.QuadPart = device_extension->file_size.QuadPart;
open_file_information->ReadOnly = device_extension->read_only;
open_file_information->FileNameLength = device_extension->file_name.Length;
RtlCopyMemory(
open_file_information->FileName,
device_extension->file_name.Buffer,
device_extension->file_name.Length
);
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(OPEN_FILE_INFORMATION) +
open_file_information->FileNameLength - sizeof(UCHAR);
break;
}
case IOCTL_DISK_CHECK_VERIFY:
case IOCTL_CDROM_CHECK_VERIFY:
case IOCTL_STORAGE_CHECK_VERIFY:
case IOCTL_STORAGE_CHECK_VERIFY2:
{
status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
break;
}
case IOCTL_DISK_GET_DRIVE_GEOMETRY:
case IOCTL_CDROM_GET_DRIVE_GEOMETRY:
{
PDISK_GEOMETRY disk_geometry;
ULONGLONG length;
if (io_stack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(DISK_GEOMETRY))
{
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
disk_geometry = (PDISK_GEOMETRY) Irp->AssociatedIrp.SystemBuffer;
length = device_extension->file_size.QuadPart;
disk_geometry->Cylinders.QuadPart = length / SECTOR_SIZE / 32 / 2;
disk_geometry->MediaType = FixedMedia;
disk_geometry->TracksPerCylinder = 2;
disk_geometry->SectorsPerTrack = 32;
disk_geometry->BytesPerSector = SECTOR_SIZE;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(DISK_GEOMETRY);
break;
}
case IOCTL_DISK_GET_LENGTH_INFO:
{
PGET_LENGTH_INFORMATION get_length_information;
if (io_stack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(GET_LENGTH_INFORMATION))
{
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
get_length_information = (PGET_LENGTH_INFORMATION) Irp->AssociatedIrp.SystemBuffer;
get_length_information->Length.QuadPart = device_extension->file_size.QuadPart;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(GET_LENGTH_INFORMATION);
break;
}
case IOCTL_DISK_GET_PARTITION_INFO:
{
PPARTITION_INFORMATION partition_information;
ULONGLONG length;
if (io_stack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(PARTITION_INFORMATION))
{
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
partition_information = (PPARTITION_INFORMATION) Irp->AssociatedIrp.SystemBuffer;
length = device_extension->file_size.QuadPart;
partition_information->StartingOffset.QuadPart = 0;
partition_information->PartitionLength.QuadPart = length;
partition_information->HiddenSectors = 1;
partition_information->PartitionNumber = 0;
partition_information->PartitionType = 0;
partition_information->BootIndicator = FALSE;
partition_information->RecognizedPartition = FALSE;
partition_information->RewritePartition = FALSE;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(PARTITION_INFORMATION);
break;
}
case IOCTL_DISK_GET_PARTITION_INFO_EX:
{
PPARTITION_INFORMATION_EX partition_information_ex;
ULONGLONG length;
if (io_stack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(PARTITION_INFORMATION_EX))
{
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
partition_information_ex = (PPARTITION_INFORMATION_EX) Irp->AssociatedIrp.SystemBuffer;
length = device_extension->file_size.QuadPart;
partition_information_ex->PartitionStyle = PARTITION_STYLE_MBR;
partition_information_ex->StartingOffset.QuadPart = 0;
partition_information_ex->PartitionLength.QuadPart = length;
partition_information_ex->PartitionNumber = 0;
partition_information_ex->RewritePartition = FALSE;
partition_information_ex->Mbr.PartitionType = 0;
partition_information_ex->Mbr.BootIndicator = FALSE;
partition_information_ex->Mbr.RecognizedPartition = FALSE;
partition_information_ex->Mbr.HiddenSectors = 1;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(PARTITION_INFORMATION_EX);
break;
}
case IOCTL_DISK_IS_WRITABLE:
{
if (!device_extension->read_only)
{
status = STATUS_SUCCESS;
}
else
{
status = STATUS_MEDIA_WRITE_PROTECTED;
}
Irp->IoStatus.Information = 0;
break;
}
case IOCTL_DISK_MEDIA_REMOVAL:
case IOCTL_STORAGE_MEDIA_REMOVAL:
{
status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
break;
}
case IOCTL_CDROM_READ_TOC:
{
PCDROM_TOC cdrom_toc;
if (io_stack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(CDROM_TOC))
{
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
cdrom_toc = (PCDROM_TOC) Irp->AssociatedIrp.SystemBuffer;
RtlZeroMemory(cdrom_toc, sizeof(CDROM_TOC));
cdrom_toc->FirstTrack = 1;
cdrom_toc->LastTrack = 1;
cdrom_toc->TrackData[0].Control = TOC_DATA_TRACK;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(CDROM_TOC);
break;
}
case IOCTL_DISK_SET_PARTITION_INFO:
{
if (device_extension->read_only)
{
status = STATUS_MEDIA_WRITE_PROTECTED;
Irp->IoStatus.Information = 0;
break;
}
if (io_stack->Parameters.DeviceIoControl.InputBufferLength <
sizeof(SET_PARTITION_INFORMATION))
{
status = STATUS_INVALID_PARAMETER;
Irp->IoStatus.Information = 0;
break;
}
status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
break;
}
case IOCTL_DISK_VERIFY:
{
PVERIFY_INFORMATION verify_information;
if (io_stack->Parameters.DeviceIoControl.InputBufferLength <
sizeof(VERIFY_INFORMATION))
{
status = STATUS_INVALID_PARAMETER;
Irp->IoStatus.Information = 0;
break;
}
verify_information = (PVERIFY_INFORMATION) Irp->AssociatedIrp.SystemBuffer;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = verify_information->Length;
break;
}
default:
{
KdPrint((
"FileDisk: Unknown IoControlCode %#x\n",
io_stack->Parameters.DeviceIoControl.IoControlCode
));
status = STATUS_INVALID_DEVICE_REQUEST;
Irp->IoStatus.Information = 0;
}
}
if (status != STATUS_PENDING)
{
Irp->IoStatus.Status = status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
return status;
}
