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- Remove completion routine for VfatReadDisk. IRPs build with IoBuildSynchronousFsdRequest mustn't be freed by IoFreeIrp, because they're still associated with a thread.

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- Don't call IoBuildAsynchronousFsdRequest with NULL buffer for read/write requests. It's explicitly prohibited per DDK documentation and causes crashes on Windows (R) NT systems.

svn path=/trunk/; revision=10395
This commit is contained in:
Filip Navara 2004-08-04 19:40:45 +00:00
parent 8db63af2d6
commit f167814f32
1 changed files with 39 additions and 58 deletions
Download patch file Download diff file Expand all files Collapse all files

97
reactos/drivers/fs/vfat/blockdev.c
View file

@ -19,35 +19,6 @@
/* FUNCTIONS ***************************************************************/
NTSTATUS STDCALL
VfatReadWriteCompletion (IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context)
{
PMDL Mdl;
DPRINT("VfatReadBlockDeviceCompletion(DeviceObject %x, Irp %x, Context %x)\n",
DeviceObject, Irp, Context);
while ((Mdl = Irp->MdlAddress))
{
Irp->MdlAddress = Mdl->Next;
MmUnlockPages(Mdl);
IoFreeMdl(Mdl);
}
*Irp->UserIosb = Irp->IoStatus;
if (Irp->PendingReturned)
{
KeSetEvent(Irp->UserEvent, IO_NO_INCREMENT, FALSE);
}
IoFreeIrp(Irp);
return STATUS_MORE_PROCESSING_REQUIRED;
}
NTSTATUS STDCALL
VfatReadWritePartialCompletion (IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
@ -123,13 +94,6 @@ VfatReadDisk (IN PDEVICE_OBJECT pDeviceObject,
Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
}
IoSetCompletionRoutine(Irp,
VfatReadWriteCompletion,
NULL,
TRUE,
TRUE,
TRUE);
DPRINT ("Calling IO Driver... with irp %x\n", Irp);
Status = IoCallDriver (pDeviceObject, Irp);
@ -161,29 +125,38 @@ VfatReadDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext,
IN BOOLEAN Wait)
{
PIRP Irp;
PIO_STACK_LOCATION StackPtr;
NTSTATUS Status;
PVOID Buffer;
DPRINT ("VfatReadDiskPartial(IrpContext %x, ReadOffset %I64x, ReadLength %d, BufferOffset %x, Wait %d)\n",
IrpContext, ReadOffset->QuadPart, ReadLength, BufferOffset, Wait);
DPRINT ("Building synchronous FSD Request...\n");
DPRINT ("Building asynchronous FSD Request...\n");
Buffer = MmGetMdlVirtualAddress(IrpContext->Irp->MdlAddress) + BufferOffset;
Irp = IoBuildSynchronousFsdRequest (IRP_MJ_READ,
IrpContext->DeviceExt->StorageDevice,
NULL,
ReadLength,
ReadOffset,
NULL,
NULL);
Irp = IoAllocateIrp(IrpContext->DeviceExt->StorageDevice->StackSize, TRUE);
if (Irp == NULL)
{
DPRINT("IoBuildSynchronousFsdRequest failed\n");
DPRINT("IoAllocateIrp failed\n");
return(STATUS_UNSUCCESSFUL);
}
Irp->UserIosb = NULL;
Irp->Tail.Overlay.Thread = PsGetCurrentThread();
StackPtr = IoGetNextIrpStackLocation(Irp);
StackPtr->MajorFunction = IRP_MJ_READ;
StackPtr->MinorFunction = 0;
StackPtr->Flags = 0;
StackPtr->Control = 0;
StackPtr->DeviceObject = IrpContext->DeviceExt->StorageDevice;
StackPtr->FileObject = NULL;
StackPtr->CompletionRoutine = NULL;
StackPtr->Parameters.Read.Length = ReadLength;
StackPtr->Parameters.Read.ByteOffset = *ReadOffset;
if (!IoAllocateMdl(Buffer, ReadLength, FALSE, FALSE, Irp))
{
DPRINT("IoAllocateMdl failed\n");
@ -232,6 +205,7 @@ VfatWriteDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext,
IN BOOLEAN Wait)
{
PIRP Irp;
PIO_STACK_LOCATION StackPtr;
NTSTATUS Status;
PVOID Buffer;
@ -240,21 +214,28 @@ VfatWriteDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext,
Buffer = MmGetMdlVirtualAddress(IrpContext->Irp->MdlAddress) + BufferOffset;
DPRINT ("Building synchronous FSD Request...\n");
Irp = IoBuildSynchronousFsdRequest (IRP_MJ_WRITE,
IrpContext->DeviceExt->StorageDevice,
NULL,
WriteLength,
WriteOffset,
NULL,
NULL);
if (!Irp)
DPRINT ("Building asynchronous FSD Request...\n");
Irp = IoAllocateIrp(IrpContext->DeviceExt->StorageDevice->StackSize, TRUE);
if (Irp == NULL)
{
DPRINT ("WRITE failed!!!\n");
return (STATUS_UNSUCCESSFUL);
DPRINT("IoAllocateIrp failed\n");
return(STATUS_UNSUCCESSFUL);
}
Irp->UserIosb = NULL;
Irp->Tail.Overlay.Thread = PsGetCurrentThread();
StackPtr = IoGetNextIrpStackLocation(Irp);
StackPtr->MajorFunction = IRP_MJ_WRITE;
StackPtr->MinorFunction = 0;
StackPtr->Flags = 0;
StackPtr->Control = 0;
StackPtr->DeviceObject = IrpContext->DeviceExt->StorageDevice;
StackPtr->FileObject = NULL;
StackPtr->CompletionRoutine = NULL;
StackPtr->Parameters.Read.Length = WriteLength;
StackPtr->Parameters.Read.ByteOffset = *WriteOffset;
if (!IoAllocateMdl(Buffer, WriteLength, FALSE, FALSE, Irp))
{
DPRINT("IoAllocateMdl failed\n");