[PATCH v8 04/20] cachefiles: notify user daemon when withdrawing cookie
dhowells at redhat.com
Mon Apr 11 23:42:34 AEST 2022
JeffleXu <jefflexu at linux.alibaba.com> wrote:
> >> + if (fd == 0)
> >> + return -ENOENT;
> > 0 is a valid fd.
> Yeah, but IMHO fd 0 is always for stdin? I think the allocated anon_fd
> won't install at fd 0. Please correct me if I'm wrong.
If someone has closed 0, then you'll get 0 next, I'm pretty sure. Try it and
> In fact I wanna use "fd == 0" as the initial state as struct
> cachefiles_object is allocated with kmem_cache_zalloc().
I would suggest presetting it to something like -2 to avoid confusion.
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