Re: [Qemu-devel] [PATCH 4/5] virtiofsd: drop lo_dirp->fd field

[Stefan Hajnoczi]

On Wed, Jul 31, 2019 at 06:27:16PM +0100, Dr. David Alan Gilbert wrote:
> * Stefan Hajnoczi (address@hidden) wrote:
> > fdopendir(3) takes ownership of the file descriptor.  The presence of
> > the lo_dirp->fd field could lead to someone incorrectly adding a
> > close(d->fd) cleanup call in the future.
> > 
> > Do not store the file descriptor in struct lo_dirp since it is unused.
> > 
> > Signed-off-by: Stefan Hajnoczi <address@hidden>
> 
> Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> 
> 
> Thanks, applied; note:
>   a) This looks like it can go into upstream libfuse
>   b) I think we're probably leaking DIR *'s if we do an lo_shutdown;
> I've added that to my todo

FUSE_DESTROY is current broken, it leaks resources and is not
thread-safe.  It's something I'll tackle in multithreading preparation
part 3.

Stefan

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