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sys: fsctl: WIP

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This commit is contained in:
Bill Zissimopoulos 2015-11-24 17:34:02 -08:00
parent 2d98e2a42d
commit f69b5f7864
2 changed files with 43 additions and 6 deletions
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19
src/sys/driver.h
View File

@ -80,11 +80,19 @@
NtStatusSym(Result), \
!NT_SUCCESS(Result) ? 0 : Irp->IoStatus.Information);\
if (STATUS_PENDING == Result) \
{\
ASSERT(FspFsvrtDeviceExtensionKind == FspDeviceExtension(DeviceObject)->Kind);\
FspIoqPostIrp(&FspFsvrtDeviceExtension(DeviceObject)->Ioq, Irp);\
/* also marks the IRP pending */\
}\
{ \
if (0 == (IrpSp->Control & SL_PENDING_RETURNED))\
{ \
/* if the IRP has not been marked pending already */\
ASSERT(FspFsvolDeviceExtensionKind == FspDeviceExtension(DeviceObject)->Kind);\
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =\
FspFsvolDeviceExtension(DeviceObject);\
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension =\
FspFsvrtDeviceExtension(FsvolDeviceExtension->FsvrtDeviceObject);\
if (!FspIoqPostIrp(&FsvrtDeviceExtension->Ioq, Irp))\
FspCompleteRequest(Irp, STATUS_ACCESS_DENIED);\
} \
} \
else \
FspCompleteRequest(Irp, Result);\
); \
@ -198,6 +206,7 @@ typedef struct
typedef struct
{
FSP_DEVICE_EXTENSION Base;
PDEVICE_OBJECT FsvrtDeviceObject;
} FSP_FSVOL_DEVICE_EXTENSION;
static inline
FSP_DEVICE_EXTENSION *FspDeviceExtension(PDEVICE_OBJECT DeviceObject)

30
src/sys/fsctl.c
View File

@ -125,6 +125,9 @@ static NTSTATUS FspFsvrtTransact(
NTSTATUS Result;
FSP_FSVRT_DEVICE_EXTENSION *FsvrtDeviceExtension = FspFsvrtDeviceExtension(DeviceObject);
PUINT8 SystemBufferEnd;
FSP_TRANSACT_RSP *Response;
PIRP ProcessIrp;
/* access check */
Result = FspSecuritySubjectContextAccessCheck(
@ -132,7 +135,32 @@ static NTSTATUS FspFsvrtTransact(
if (!NT_SUCCESS(Result))
return Result;
return STATUS_INVALID_DEVICE_REQUEST;
/* process any user-mode file system responses */
Response = SystemBuffer;
SystemBufferEnd = (PUINT8)SystemBuffer + InputBufferLength;
for (;;)
{
if ((PUINT8)Response + sizeof(Response->Size) > SystemBufferEnd ||
sizeof(FSP_TRANSACT_RSP) > Response->Size ||
(PUINT8)Response + Response->Size > SystemBufferEnd)
break;
ProcessIrp = FspIoqEndProcessingIrp(&FsvrtDeviceExtension->Ioq, Response->Hint);
if (0 == ProcessIrp)
/* either IRP was canceled or a bogus IrpHint was provided */
continue;
//FspDispatchProcessedIrp(ProcessIrp, Response);
Response = (PVOID)((PUINT8)Response + Response->Size);
}
if (FspIoqPostIrp(&FsvrtDeviceExtension->TransactIoq, Irp))
Result = STATUS_PENDING;
else
Result = STATUS_ACCESS_DENIED;
return Result;
}
static NTSTATUS FspFsctlFileSystemControl(