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Fix IopDeleteFile: Use IRP_SYNC_API flag, use local stack event, fix memory leak (Free completion context), dereference completion port, get the right deviceobject if FO_DIRECT_DEVICE_OPEN is set

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svn path=/trunk/; revision=14920
This commit is contained in:
Alex Ionescu 2005-05-01 19:36:00 +00:00
parent 722d9a84e4
commit f7695b0f53
1 changed files with 62 additions and 47 deletions
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109
reactos/ntoskrnl/io/file.c
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@ -177,56 +177,71 @@ VOID
STDCALL
IopDeleteFile(PVOID ObjectBody)
{
PFILE_OBJECT FileObject = (PFILE_OBJECT)ObjectBody;
PIRP Irp;
PIO_STACK_LOCATION StackPtr;
NTSTATUS Status;
PFILE_OBJECT FileObject = (PFILE_OBJECT)ObjectBody;
PIRP Irp;
PIO_STACK_LOCATION StackPtr;
NTSTATUS Status;
KEVENT Event;
PDEVICE_OBJECT DeviceObject;
IO_STATUS_BLOCK IoStatusBlock;
DPRINT("IopDeleteFile()\n");
DPRINT("IopDeleteFile()\n");
if (FileObject->DeviceObject)
{
#if 0
//NOTE: Allmost certain that the latest changes to I/O Mgr makes this redundant (OriginalFileObject case)
ObReferenceObjectByPointer(ObjectBody,
STANDARD_RIGHTS_REQUIRED,
IoFileObjectType,
UserMode);
#endif
KeResetEvent( &FileObject->Event );
Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, TRUE);
if (Irp == NULL)
{
/*
* FIXME: This case should eventually be handled. We should wait
* until enough memory is available to allocate the IRP.
*/
ASSERT(FALSE);
}
if (FileObject->DeviceObject)
{
/* Check if this is a direct open or not */
if (FileObject->Flags & FO_DIRECT_DEVICE_OPEN)
{
DeviceObject = IoGetAttachedDevice(FileObject->DeviceObject);
}
else
{
DeviceObject = IoGetRelatedDeviceObject(FileObject);
}
/* Clear and set up Events */
KeClearEvent(&FileObject->Event);
KeInitializeEvent(&Event, SynchronizationEvent, FALSE);
/* Allocate an IRP */
Irp = IoAllocateIrp(DeviceObject->StackSize, TRUE);
/* Set it up */
Irp->UserEvent = &Event;
Irp->UserIosb = &IoStatusBlock;
Irp->Tail.Overlay.Thread = PsGetCurrentThread();
Irp->Tail.Overlay.OriginalFileObject= FileObject;
Irp->Flags = IRP_CLOSE_OPERATION | IRP_SYNCHRONOUS_API;
/* Set up Stack Pointer Data */
StackPtr = IoGetNextIrpStackLocation(Irp);
StackPtr->MajorFunction = IRP_MJ_CLOSE;
StackPtr->DeviceObject = DeviceObject;
StackPtr->FileObject = FileObject;
Irp->UserEvent = &FileObject->Event;
Irp->Tail.Overlay.Thread = PsGetCurrentThread();
Irp->Flags |= IRP_CLOSE_OPERATION;
StackPtr = IoGetNextIrpStackLocation(Irp);
StackPtr->MajorFunction = IRP_MJ_CLOSE;
StackPtr->DeviceObject = FileObject->DeviceObject;
StackPtr->FileObject = FileObject;
Status = IoCallDriver(FileObject->DeviceObject, Irp);
if (Status == STATUS_PENDING)
{
KeWaitForSingleObject(&FileObject->Event, Executive, KernelMode, FALSE, NULL);
}
}
if (FileObject->FileName.Buffer != NULL)
{
ExFreePool(FileObject->FileName.Buffer);
FileObject->FileName.Buffer = 0;
}
/* Call the FS Driver */
Status = IoCallDriver(DeviceObject, Irp);
/* Wait for completion */
if (Status == STATUS_PENDING)
{
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
}
/* Clear the file name */
if (FileObject->FileName.Buffer)
{
ExFreePool(FileObject->FileName.Buffer);
FileObject->FileName.Buffer = NULL;
}
/* Free the completion context */
if (FileObject->CompletionContext)
{
ObDereferenceObject(FileObject->CompletionContext->Port);
ExFreePool(FileObject->CompletionContext);
}
}
}
static