Re: [PATCH] server, ntoskrnl: Implement support for IRP_MJ_CREATE requests.

[Vitaliy Margolen]

Charles Davis wrote:
> Also, add stub handlers in mountmgr.
>
> This patch fixes an issue with the previous one where wine would hang if
> ntoskrnl got a STATUS_BUFFER_OVERFLOW back from thes server.
> ---
> +int suspend_thread( struct thread *thread );
> +int resume_thread( struct thread *thread );
> +static void complete_open( struct open_call *open, unsigned int status )
> +{
> ...
> +    resume_thread( open->call.thread );
> This  static struct object *device_open_file( struct object *obj, unsigned int access,
>                                          unsigned int sharing, unsigned int options )
>  {
> ...
> +    suspend_thread( current );

Looks like a hack to me. You shouldn't be suspending/resuming threads
directly like this. They should block on open operation.

Vitaliy.

[PATCH] server, ntoskrnl: Implement support for IRP_MJ_CREATE requests.

[Charles Davis]

Vitaliy Margolen wrote:
> Charles Davis wrote:
> > Also, add stub handlers in mountmgr.
> >
> > This patch fixes an issue with the previous one where wine would hang if
> > ntoskrnl got a STATUS_BUFFER_OVERFLOW back from thes server.
> > ---
> > +int suspend_thread( struct thread *thread );
> > +int resume_thread( struct thread *thread );
> > +static void complete_open( struct open_call *open, unsigned int status )
> > +{
> > ...
> > +    resume_thread( open->call.thread );
> > This  static struct object *device_open_file( struct object *obj, unsigned int access,
> >                                          unsigned int sharing, unsigned int options )
> >  {
> > ...
> > +    suspend_thread( current );
>
> Looks like a hack to me. You shouldn't be suspending/resuming threads
> directly like this. They should block on open operation.
>
> Vitaliy.

I figured that. At the time, though, I thought that this was the path of
least resistance, but I wasn't sure.

I guess now I should make open_file_object return STATUS_PENDING, then
make FILE_CreateFile() wait until some object is signaled. (This is the
way we do IOCTLs.) I'll send a patch shortly for this.

Chip