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- Move the code in IoCreateFile inside IopParseDevice where it belongs. Currently only a raw move and hacks to make it not regress anything, but in the future we can now finally start applying some important fixes for proper communication with FSDs and setting a myriad of flags and settings required. Will also allow for some nice optimizations in the future.
svn path=/trunk/; revision=22878
This commit is contained in:
Alex Ionescu
parent
51cd8da6b7
commit
0f2c6e474b
1 changed files with 158 additions and 157 deletions
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@ -34,6 +34,10 @@ IopParseDevice(IN PVOID ParseObject,
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NTSTATUS Status;
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PFILE_OBJECT FileObject;
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PVPB Vpb;
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PIRP Irp;
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PEXTENDED_IO_STACK_LOCATION StackLoc;
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IO_SECURITY_CONTEXT SecurityContext;
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IO_STATUS_BLOCK IoStatusBlock;
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DPRINT("IopParseDevice:\n"
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"DeviceObject : %p\n"
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"RelatedFileObject : %p\n"
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@ -46,6 +50,13 @@ IopParseDevice(IN PVOID ParseObject,
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/* Validate the open packet */
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if (!IopValidateOpenPacket(OpenPacket)) return STATUS_OBJECT_TYPE_MISMATCH;
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RtlMapGenericMask(&AccessState->RemainingDesiredAccess,
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&IoFileObjectType->TypeInfo.GenericMapping);
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RtlMapGenericMask(&AccessState->OriginalDesiredAccess,
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&IoFileObjectType->TypeInfo.GenericMapping);
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SeSetAccessStateGenericMapping(AccessState,
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&IoFileObjectType->TypeInfo.GenericMapping);
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/* Create the actual file object */
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Status = ObCreateObject(AccessMode,
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IoFileObjectType,
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@ -112,9 +123,145 @@ IopParseDevice(IN PVOID ParseObject,
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Status = IopReferenceDeviceObject(DeviceObject);
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FileObject->DeviceObject = DeviceObject;
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/* Set the file object and return success */
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FileObject->Type = IO_TYPE_FILE;
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FileObject->Size = sizeof(FILE_OBJECT);
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if (OpenPacket->CreateOptions &
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(FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT))
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{
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FileObject->Flags |= FO_SYNCHRONOUS_IO;
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if (OpenPacket->CreateOptions & FILE_SYNCHRONOUS_IO_ALERT)
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{
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FileObject->Flags |= FO_ALERTABLE_IO;
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}
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}
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if (OpenPacket->CreateOptions & FILE_NO_INTERMEDIATE_BUFFERING)
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{
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FileObject->Flags |= FO_NO_INTERMEDIATE_BUFFERING;
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}
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if (OpenPacket->CreateOptions & FILE_WRITE_THROUGH)
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{
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FileObject->Flags |= FO_WRITE_THROUGH;
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}
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if (OpenPacket->CreateOptions & FILE_SEQUENTIAL_ONLY)
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{
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FileObject->Flags |= FO_SEQUENTIAL_ONLY;
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}
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if (OpenPacket->CreateOptions & FILE_RANDOM_ACCESS)
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{
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FileObject->Flags |= FO_RANDOM_ACCESS;
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}
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if (!(Attributes & OBJ_CASE_INSENSITIVE))
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{
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FileObject->Flags |= FO_OPENED_CASE_SENSITIVE;
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}
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SecurityContext.SecurityQos = SecurityQos;
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SecurityContext.AccessState = AccessState;
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SecurityContext.DesiredAccess = AccessState->RemainingDesiredAccess;
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SecurityContext.FullCreateOptions = OpenPacket->CreateOptions;
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KeInitializeEvent(&FileObject->Lock, SynchronizationEvent, TRUE);
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KeInitializeEvent(&FileObject->Event, NotificationEvent, FALSE);
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Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
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if (!Irp) return STATUS_UNSUCCESSFUL;
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/* Now set the IRP data */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = AccessMode;
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Irp->Flags = IRP_CREATE_OPERATION |
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IRP_SYNCHRONOUS_API;// |
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//IRP_DEFER_IO_COMPLETION;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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Irp->UserEvent = &FileObject->Event;
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Irp->UserIosb = &IoStatusBlock;
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Irp->MdlAddress = NULL;
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Irp->PendingReturned = FALSE;
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Irp->UserEvent = NULL;
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Irp->Cancel = FALSE;
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Irp->CancelRoutine = NULL;
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Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
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StackLoc = (PEXTENDED_IO_STACK_LOCATION)IoGetNextIrpStackLocation(Irp);
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StackLoc->Control = 0;
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StackLoc->FileObject = FileObject;
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switch (OpenPacket->CreateFileType)
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{
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default:
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case CreateFileTypeNone:
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StackLoc->MajorFunction = IRP_MJ_CREATE;
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StackLoc->Flags = OpenPacket->Options;
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StackLoc->Parameters.Create.EaLength = OpenPacket->EaBuffer != NULL ? OpenPacket->EaLength : 0;
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StackLoc->Flags |= !(Attributes & OBJ_CASE_INSENSITIVE) ? SL_CASE_SENSITIVE: 0;
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break;
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case CreateFileTypeNamedPipe:
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StackLoc->MajorFunction = IRP_MJ_CREATE_NAMED_PIPE;
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StackLoc->Parameters.CreatePipe.Parameters = OpenPacket->MailslotOrPipeParameters;
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break;
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case CreateFileTypeMailslot:
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StackLoc->MajorFunction = IRP_MJ_CREATE_MAILSLOT;
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StackLoc->Parameters.CreateMailslot.Parameters = OpenPacket->MailslotOrPipeParameters;
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break;
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}
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/* Set the common data */
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Irp->Overlay.AllocationSize = OpenPacket->AllocationSize;
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Irp->AssociatedIrp.SystemBuffer =OpenPacket->EaBuffer;
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StackLoc->Parameters.Create.Options = (OpenPacket->Disposition << 24) | (OpenPacket->CreateOptions & 0x00FFFFFF);
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StackLoc->Parameters.Create.FileAttributes = OpenPacket->FileAttributes;
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StackLoc->Parameters.Create.ShareAccess = OpenPacket->ShareAccess;
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StackLoc->Parameters.Create.SecurityContext = &SecurityContext;
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/* Reference the file object and call the driver */
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ObReferenceObject(FileObject);
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Status = IoCallDriver(FileObject->DeviceObject, Irp );
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/* Copy the status block */
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OpenPacket->Information = IoStatusBlock.Information;
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OpenPacket->FinalStatus = IoStatusBlock.Status;
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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Status = IoStatusBlock.Status;
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}
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#if 0
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else
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{
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KIRQL OldIrql;
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PKNORMAL_ROUTINE NormalRoutine;
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PVOID NormalContext;
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/* We'll have to complete it ourselves */
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ASSERT(!Irp->PendingReturned);
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KeRaiseIrql(APC_LEVEL, &OldIrql);
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IopCompleteRequest(&Irp->Tail.Apc,
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&NormalRoutine,
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&NormalContext,
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(PVOID*)&FileObject,
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&NormalContext);
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KeLowerIrql(OldIrql);
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}
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#endif
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if (!NT_SUCCESS(Status))
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{
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FileObject->DeviceObject = NULL;
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FileObject->Vpb = NULL;
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FileObject = NULL;
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//ObDereferenceObject(FileObject);
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}
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*Object = FileObject;
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return STATUS_SUCCESS;
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return Status;
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}
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NTSTATUS
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@ -804,20 +951,11 @@ IoCreateFile(OUT PHANDLE FileHandle,
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IN PVOID ExtraCreateParameters OPTIONAL,
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IN ULONG Options)
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{
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PFILE_OBJECT FileObject = NULL;
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PIRP Irp;
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PEXTENDED_IO_STACK_LOCATION StackLoc;
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IO_SECURITY_CONTEXT SecurityContext;
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KPROCESSOR_MODE AccessMode;
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HANDLE LocalHandle = 0;
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LARGE_INTEGER SafeAllocationSize;
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PVOID SystemEaBuffer = NULL;
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NTSTATUS Status = STATUS_SUCCESS;
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AUX_DATA AuxData;
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ACCESS_STATE AccessState;
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KIRQL OldIrql;
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PKNORMAL_ROUTINE NormalRoutine;
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PVOID NormalContext;
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NTSTATUS Status = STATUS_SUCCESS;
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OPEN_PACKET OpenPacket;
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PAGED_CODE();
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@ -928,156 +1066,19 @@ IoCreateFile(OUT PHANDLE FileHandle,
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&OpenPacket,
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&LocalHandle);
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RtlMapGenericMask(&DesiredAccess, &IoFileObjectType->TypeInfo.GenericMapping);
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ObReferenceObjectByHandle(LocalHandle,
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DesiredAccess,
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NULL,
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KernelMode,
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(PVOID*)&FileObject,
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NULL);
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if (!NT_SUCCESS(Status)) return Status;
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DPRINT1("Status: %lx %lx\n", Status, LocalHandle);
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FileObject->Type = IO_TYPE_FILE;
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FileObject->Size = sizeof(FILE_OBJECT);
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if (CreateOptions &
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(FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT))
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_SEH_TRY
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{
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FileObject->Flags |= FO_SYNCHRONOUS_IO;
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if (CreateOptions & FILE_SYNCHRONOUS_IO_ALERT)
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{
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FileObject->Flags |= FO_ALERTABLE_IO;
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}
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*FileHandle = LocalHandle;
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IoStatusBlock->Information = OpenPacket.Information;
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IoStatusBlock->Status = OpenPacket.FinalStatus;
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}
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if (CreateOptions & FILE_NO_INTERMEDIATE_BUFFERING)
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_SEH_HANDLE
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{
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FileObject->Flags |= FO_NO_INTERMEDIATE_BUFFERING;
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}
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if (CreateOptions & FILE_WRITE_THROUGH)
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{
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FileObject->Flags |= FO_WRITE_THROUGH;
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}
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if (CreateOptions & FILE_SEQUENTIAL_ONLY)
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{
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FileObject->Flags |= FO_SEQUENTIAL_ONLY;
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}
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if (CreateOptions & FILE_RANDOM_ACCESS)
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{
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FileObject->Flags |= FO_RANDOM_ACCESS;
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}
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if (!(ObjectAttributes->Attributes & OBJ_CASE_INSENSITIVE))
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{
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FileObject->Flags |= FO_OPENED_CASE_SENSITIVE;
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}
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SeCreateAccessState(&AccessState, &AuxData, FILE_ALL_ACCESS, NULL);
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SecurityContext.SecurityQos = NULL; /* ?? */
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SecurityContext.AccessState = &AccessState;
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SecurityContext.DesiredAccess = DesiredAccess;
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SecurityContext.FullCreateOptions = CreateOptions;
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KeInitializeEvent(&FileObject->Lock, SynchronizationEvent, TRUE);
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KeInitializeEvent(&FileObject->Event, NotificationEvent, FALSE);
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Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
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if (!Irp)
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{
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ZwClose(LocalHandle);
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return STATUS_UNSUCCESSFUL;
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}
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/* Now set the IRP data */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = AccessMode;
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Irp->Flags = IRP_CREATE_OPERATION |
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IRP_SYNCHRONOUS_API |
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IRP_DEFER_IO_COMPLETION;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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Irp->UserEvent = &FileObject->Event;
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Irp->UserIosb = IoStatusBlock;
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Irp->MdlAddress = NULL;
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Irp->PendingReturned = FALSE;
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Irp->UserEvent = NULL;
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Irp->Cancel = FALSE;
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Irp->CancelRoutine = NULL;
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Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
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StackLoc = (PEXTENDED_IO_STACK_LOCATION)IoGetNextIrpStackLocation(Irp);
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StackLoc->Control = 0;
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StackLoc->FileObject = FileObject;
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switch (CreateFileType)
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{
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default:
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case CreateFileTypeNone:
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StackLoc->MajorFunction = IRP_MJ_CREATE;
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StackLoc->Flags = Options;
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StackLoc->Parameters.Create.EaLength = SystemEaBuffer != NULL ? EaLength : 0;
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StackLoc->Flags |= !(ObjectAttributes->Attributes & OBJ_CASE_INSENSITIVE) ? SL_CASE_SENSITIVE: 0;
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break;
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case CreateFileTypeNamedPipe:
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StackLoc->MajorFunction = IRP_MJ_CREATE_NAMED_PIPE;
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StackLoc->Parameters.CreatePipe.Parameters = ExtraCreateParameters;
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break;
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case CreateFileTypeMailslot:
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StackLoc->MajorFunction = IRP_MJ_CREATE_MAILSLOT;
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StackLoc->Parameters.CreateMailslot.Parameters = ExtraCreateParameters;
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break;
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}
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/* Set the common data */
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Irp->Overlay.AllocationSize = SafeAllocationSize;
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Irp->AssociatedIrp.SystemBuffer = SystemEaBuffer;
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StackLoc->Parameters.Create.Options = (CreateDisposition << 24) | (CreateOptions & 0x00FFFFFF);
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StackLoc->Parameters.Create.FileAttributes = FileAttributes;
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StackLoc->Parameters.Create.ShareAccess = ShareAccess;
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StackLoc->Parameters.Create.SecurityContext = &SecurityContext;
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Status = IofCallDriver(FileObject->DeviceObject, Irp );
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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AccessMode,
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FALSE,
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NULL);
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Status = IoStatusBlock->Status;
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}
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else
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{
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/* We'll have to complete it ourselves */
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ASSERT(!Irp->PendingReturned);
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KeRaiseIrql(APC_LEVEL, &OldIrql);
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IopCompleteRequest(&Irp->Tail.Apc,
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&NormalRoutine,
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&NormalContext,
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(PVOID*)&FileObject,
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&NormalContext);
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KeLowerIrql(OldIrql);
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}
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if (!NT_SUCCESS(Status))
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{
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FileObject->DeviceObject = NULL;
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FileObject->Vpb = NULL;
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ObDereferenceObject(FileObject);
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}
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else
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{
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_SEH_TRY
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{
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*FileHandle = LocalHandle;
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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/* cleanup EABuffer if captured */
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if (AccessMode != KernelMode && (SystemEaBuffer))
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