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- Refactor device attachment into a private routine.

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- We shouldn't allow attaching to a device that's still initlizaing, but ROS currently does because of some device that tries to do this, in the PnP manager or early boot-phase drivers (it has an auto-generated name). Please fix this!

svn path=/trunk/; revision=26258
This commit is contained in:
Alex Ionescu 2007-04-04 03:19:27 +00:00
parent 6a5123b065
commit f623df7b11
1 changed files with 21 additions and 43 deletions
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64
reactos/ntoskrnl/io/iomgr/device.c
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@ -37,9 +37,18 @@ IopAttachDeviceToDeviceStackSafe(IN PDEVICE_OBJECT SourceDevice,
SourceDeviceExtension = IoGetDevObjExtension(SourceDevice);
ASSERT(SourceDeviceExtension->AttachedTo == NULL);
/* FIXME: ROS HACK */
if (AttachedDevice->Flags & DO_DEVICE_INITIALIZING)
{
DPRINT1("Io: CRITICAL: Allowing attach to device which hasn't "
"cleared its DO_DEVICE_INITIALIZING flag. Fix the damn "
"thing: %p %wZ\n",
AttachedDevice,
&AttachedDevice->DriverObject->DriverName);
}
/* Make sure that it's in a correct state */
if ((AttachedDevice->Flags & DO_DEVICE_INITIALIZING) ||
(IoGetDevObjExtension(AttachedDevice)->ExtensionFlags &
if ((IoGetDevObjExtension(AttachedDevice)->ExtensionFlags &
(DOE_UNLOAD_PENDING |
DOE_DELETE_PENDING |
DOE_REMOVE_PENDING |
@ -629,16 +638,10 @@ NTAPI
IoAttachDeviceToDeviceStack(IN PDEVICE_OBJECT SourceDevice,
IN PDEVICE_OBJECT TargetDevice)
{
NTSTATUS Status;
PDEVICE_OBJECT LocalAttach;
/* Attach it safely */
Status = IoAttachDeviceToDeviceStackSafe(SourceDevice,
TargetDevice,
&LocalAttach);
/* Return it */
return LocalAttach;
return IopAttachDeviceToDeviceStackSafe(SourceDevice,
TargetDevice,
NULL);
}
/*
@ -650,41 +653,16 @@ IoAttachDeviceToDeviceStackSafe(IN PDEVICE_OBJECT SourceDevice,
IN PDEVICE_OBJECT TargetDevice,
IN OUT PDEVICE_OBJECT *AttachedToDeviceObject)
{
PDEVICE_OBJECT AttachedDevice;
PEXTENDED_DEVOBJ_EXTENSION SourceDeviceExtension;
/* Get the Attached Device and source extension */
AttachedDevice = IoGetAttachedDevice(TargetDevice);
SourceDeviceExtension = IoGetDevObjExtension(SourceDevice);
/* Make sure that it's in a correct state */
if (!IoGetDevObjExtension(AttachedDevice)->ExtensionFlags &
(DOE_UNLOAD_PENDING |
DOE_DELETE_PENDING |
DOE_REMOVE_PENDING |
DOE_REMOVE_PROCESSED))
/* Call the internal function */
if (!IopAttachDeviceToDeviceStackSafe(SourceDevice,
TargetDevice,
AttachedToDeviceObject))
{
/* Update atached device fields */
AttachedDevice->AttachedDevice = SourceDevice;
AttachedDevice->Spare1++;
/* Update the source with the attached data */
SourceDevice->StackSize = AttachedDevice->StackSize + 1;
SourceDevice->AlignmentRequirement = AttachedDevice->
AlignmentRequirement;
SourceDevice->SectorSize = AttachedDevice->SectorSize;
/* Set the attachment in the device extension */
SourceDeviceExtension->AttachedTo = AttachedDevice;
}
else
{
/* Device was unloading or being removed */
AttachedDevice = NULL;
/* Nothing found */
return STATUS_NO_SUCH_DEVICE;
}
/* Return the attached device */
*AttachedToDeviceObject = AttachedDevice;
/* Success! */
return STATUS_SUCCESS;
}