netdev - Re: [PATCH bpf] tools: bpftool: close prog FD before exit on showing a single program

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Date:   Thu, 15 Aug 2019 13:16:33 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     Quentin Monnet <quentin.monnet@...ronome.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        oss-drivers@...ronome.com
Subject: Re: [PATCH bpf] tools: bpftool: close prog FD before exit on showing
 a single program

On Thu, Aug 15, 2019 at 11:09 AM Jakub Kicinski
<jakub.kicinski@...ronome.com> wrote:
>
> On Thu, 15 Aug 2019 11:05:16 -0700, Andrii Nakryiko wrote:
> > > > Would it be better to make show_prog(fd) close provided fd instead or
> > > > is it used in some other context where FD should live longer (I
> > > > haven't checked, sorry)?
> > >
> > > I think it used to close that's how the bug crept in. Other than the bug
> > > it's fine the way it is.
> >
> > So are you saying that show_prog() should or should not close FD?
>
> Yup, it we'd have to rename it to indicate it closes the fd, and it's
> only called in two places. Not worth the churn.

OK, I'm fine with that.

Acked-by: Andrii Nakryiko <andriin@...com>