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sys: WIP

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This commit is contained in:
Bill Zissimopoulos 2015-11-24 16:54:10 -08:00
parent 869793ea69
commit 2d98e2a42d
2 changed files with 40 additions and 4 deletions
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26
inc/winfsp/fsctl.h
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@ -32,4 +32,30 @@ extern const __declspec(selectany) GUID FspFsvrtDeviceClassGuid =
#define FSP_FSCTL_CREATE_BUFFER_SIZE 64
#define FSP_FSCTL_TRANSACT_BUFFER_SIZE 4096
/* marshalling */
#pragma warning(push)
#pragma warning(disable:4200) /* zero-sized array in struct/union */
typedef struct
{
ULONG Size;
UINT_PTR Hint;
UINT8 Kind;
union
{
UINT8 Placeholder; // !!!: REMOVE
} Req;
} FSP_TRANSACT_REQ;
typedef struct
{
ULONG Size;
UINT_PTR Hint;
IO_STATUS_BLOCK IoStatus;
UINT8 Kind;
union
{
UINT8 Placeholder; // !!!: REMOVE
} Req;
} FSP_TRANSACT_RSP;
#pragma warning(pop)
#endif

18
src/sys/fsctl.c
View File

@ -100,10 +100,11 @@ static NTSTATUS FspFsvrtDeleteVolume(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
NTSTATUS Result;
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension = FspFsvrtDeviceExtension(DeviceObject);
/* access check */
Result = FspSecuritySubjectContextAccessCheck(
FspFsvrtDeviceExtension(DeviceObject)->SecurityDescriptorBuf,
FILE_WRITE_DATA, Irp->RequestorMode);
FsvrtDeviceExtension->SecurityDescriptorBuf, FILE_WRITE_DATA, Irp->RequestorMode);
if (!NT_SUCCESS(Result))
return Result;
@ -113,12 +114,21 @@ static NTSTATUS FspFsvrtDeleteVolume(
static NTSTATUS FspFsvrtTransact(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
/* check parameters */
ULONG InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
ULONG OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;
PVOID SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
if (sizeof(FSP_TRANSACT_RSP) > InputBufferLength || 0 == SystemBuffer)
return STATUS_INVALID_PARAMETER;
if (FSP_FSCTL_TRANSACT_BUFFER_SIZE > OutputBufferLength)
return STATUS_BUFFER_TOO_SMALL;
NTSTATUS Result;
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension = FspFsvrtDeviceExtension(DeviceObject);
/* access check */
Result = FspSecuritySubjectContextAccessCheck(
FspFsvrtDeviceExtension(DeviceObject)->SecurityDescriptorBuf,
FILE_WRITE_DATA, Irp->RequestorMode);
FsvrtDeviceExtension->SecurityDescriptorBuf, FILE_WRITE_DATA, Irp->RequestorMode);
if (!NT_SUCCESS(Result))
return Result;