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Major refactoring: WIP

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This commit is contained in:
Bill Zissimopoulos 2015-12-22 16:38:36 -08:00
parent 59203b7db9
commit 63a1227b57
1 changed files with 0 additions and 123 deletions
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123
src/sys/volume.c
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@ -215,129 +215,6 @@ NTSTATUS FspVolumeWork(
} }
#if 0 #if 0
NTSTATUS FspFsctlCreateVolume(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
/* check parameters */
ULONG InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
ULONG OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;
PVOID SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
if (0 == SystemBuffer || sizeof(FSP_FSCTL_VOLUME_PARAMS) > InputBufferLength)
return STATUS_INVALID_PARAMETER;
if (FSP_FSCTL_CREATE_BUFFER_SIZEMIN > OutputBufferLength)
return STATUS_BUFFER_TOO_SMALL;
NTSTATUS Result;
FSP_FSCTL_VOLUME_PARAMS VolumeParams = *(FSP_FSCTL_VOLUME_PARAMS *)SystemBuffer;
GUID Guid;
UNICODE_STRING DeviceSddl;
UNICODE_STRING DeviceName;
FSP_FSCTL_FILE_CONTEXT2 *FsContext2;
HANDLE MupHandle = 0;
PDEVICE_OBJECT FsvrtDeviceObject = 0;
PDEVICE_OBJECT FsvolDeviceObject;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension;
/* check the passed in VolumeParams */
if (FspFsctlIrpTimeoutMinimum > VolumeParams.IrpTimeout ||
VolumeParams.IrpTimeout > FspFsctlIrpTimeoutMaximum)
{
#if DBG
/* allow the debug timeout value on debug builds */
if (FspFsctlIrpTimeoutDebug != VolumeParams.IrpTimeout)
#endif
VolumeParams.IrpTimeout = FspFsctlIrpTimeoutDefault;
}
if (FspFsctlTransactTimeoutMinimum > VolumeParams.TransactTimeout ||
VolumeParams.TransactTimeout > FspFsctlTransactTimeoutMaximum)
VolumeParams.TransactTimeout = FspFsctlTransactTimeoutDefault;
/* create volume guid */
Result = FspCreateGuid(&Guid);
if (!NT_SUCCESS(Result))
return Result;
/* prepare the device name and SDDL */
RtlInitUnicodeString(&DeviceSddl, L"" FSP_FSVRT_DEVICE_SDDL);
RtlInitEmptyUnicodeString(&DeviceName, SystemBuffer, FSP_FSCTL_CREATE_BUFFER_SIZEMIN);
Result = RtlUnicodeStringPrintf(&DeviceName,
L"\\Device\\Volume{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
Guid.Data1, Guid.Data2, Guid.Data3,
Guid.Data4[0], Guid.Data4[1], Guid.Data4[2], Guid.Data4[3],
Guid.Data4[4], Guid.Data4[5], Guid.Data4[6], Guid.Data4[7]);
ASSERT(NT_SUCCESS(Result));
FsContext2 = IrpSp->FileObject->FsContext2;
ExAcquireFastMutex(&FsContext2->FastMutex);
try
{
/* check to see if we already have a volume */
if (0 != FsContext2->FsvolDeviceObject)
{
Result = STATUS_ACCESS_DENIED;
goto exit;
}
/* create the volume (and virtual disk) device(s) */
Result = FspDeviceCreate(FspFsvolDeviceExtensionKind, 0,
DeviceObject->DeviceType,
&FsvolDeviceObject);
if (!NT_SUCCESS(Result))
goto exit;
if (FILE_DEVICE_DISK_FILE_SYSTEM == DeviceObject->DeviceType)
{
Result = FspDeviceCreateSecure(FspFsvrtDeviceExtensionKind, 0,
&DeviceName, FILE_DEVICE_VIRTUAL_DISK,
&DeviceSddl, &FspFsvrtDeviceClassGuid,
&FsvrtDeviceObject);
if (!NT_SUCCESS(Result))
{
FspDeviceRelease(FsvolDeviceObject);
goto exit;
}
#pragma prefast(suppress:28175, "We are a filesystem: ok to access SectorSize")
FsvrtDeviceObject->SectorSize = VolumeParams.SectorSize;
}
#pragma prefast(suppress:28175, "We are a filesystem: ok to access SectorSize")
FsvolDeviceObject->SectorSize = VolumeParams.SectorSize;
FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
FsvolDeviceExtension->FsctlDeviceObject = DeviceObject;
FsvolDeviceExtension->FsvrtDeviceObject = FsvrtDeviceObject;
FsvolDeviceExtension->VolumeParams = VolumeParams;
if (0 != FsvrtDeviceObject)
FspDeviceInitComplete(FsvrtDeviceObject);
FspDeviceInitComplete(FsvolDeviceObject);
/* do we need to register with MUP? */
if (0 == FsvrtDeviceObject)
{
Result = FsRtlRegisterUncProviderEx(&MupHandle, &DeviceName, FsvolDeviceObject, 0);
if (!NT_SUCCESS(Result))
{
FspDeviceRelease(FsvolDeviceObject);
goto exit;
}
FsvolDeviceExtension->MupHandle = MupHandle;
}
/* associate the new volume device with our file object */
FsContext2->FsvolDeviceObject = FsvolDeviceObject;
Irp->IoStatus.Information = DeviceName.Length + sizeof(WCHAR);
Result = STATUS_SUCCESS;
exit:;
}
finally
{
ExReleaseFastMutex(&FsContext2->FastMutex);
}
return Result;
}
static NTSTATUS FspFsctlMountVolume( static NTSTATUS FspFsctlMountVolume(
PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp) PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{ {