Re: [PATCH v4 8/9] ntoskrnl: Set Device ContainerID from driver when registering an interface

[Zebediah Figura]

On 7/12/22 13:01, Claire Girka wrote:
> From: Claire Girka
>
> dlls/ntoskrnl.exe/pnp.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
>
> diff --git a/dlls/ntoskrnl.exe/pnp.c b/dlls/ntoskrnl.exe/pnp.c
> index e12e46f94f1..77d879a07a9 100644
> --- a/dlls/ntoskrnl.exe/pnp.c
> +++ b/dlls/ntoskrnl.exe/pnp.c
> @@ -880,6 +880,7 @@ NTSTATUS WINAPI IoRegisterDeviceInterface(DEVICE_OBJECT *device, const GUID *cla
>       struct wine_rb_entry *entry;
>       DWORD required;
>       HDEVINFO set;
> -
>
> WCHAR *id;
>
> TRACE("device %p, class_guid %s, refstr %s, symbolic_link %p.\n",
>          device, debugstr_guid(class_guid), debugstr_us(refstr), symbolic_link);
>
> @@ -913,6 +914,13 @@ NTSTATUS WINAPI IoRegisterDeviceInterface(DEVICE_OBJECT *device, const GUID *cla
>           return STATUS_UNSUCCESSFUL;
>       }
> - if (!get_device_id(device, BusQueryContainerID, &id) && id)
> - {
> -
>    SetupDiSetDeviceRegistryPropertyW( set, &sp_device, SPDRP_BASE_CONTAINERID, (BYTE *)id,
> -
>        (lstrlenW( id ) + 1) * sizeof(WCHAR) );
> -
>    ExFreePool( id );
> - }
> -
> data->DevicePath[1] = '?';
> TRACE("Returning path %s.\n", debugstr_w(data->DevicePath));
> RtlCreateUnicodeString( &device_path, data->DevicePath);

Why do we need this?