linux-kernel - Re: [PATCH 2/2] dwarves: cus__load

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Date:   Thu, 17 Mar 2022 12:19:25 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     John Fastabend <john.fastabend@...il.com>
Cc:     kkourt@...urt.io, dwarves@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Kornilios Kourtis <kornilios@...valent.com>
Subject: Re: [PATCH 2/2] dwarves: cus__load_files: set errno if load fails

Em Wed, Mar 16, 2022 at 10:00:57PM -0700, John Fastabend escreveu:
> kkourt@ wrote:
> > From: Kornilios Kourtis <kornilios@...valent.com>
> > 
> > This patch improves the error seen by the user by setting errno in
> > cus__load_files(). Otherwise, we get a "No such file or directory" error
> > which might be confusing.
> > 
> > Before the patch, using a bogus file:
> > $ ./pahole -J ./vmlinux-5.3.18-24.102-default.debug
> > pahole: ./vmlinux-5.3.18-24.102-default.debug: No such file or directory
> > $ ls ./vmlinux-5.3.18-24.102-default.debug
> > /home/kkourt/src/hubble-fgs/vmlinux-5.3.18-24.102-default.debug
> > 
> > After the patch:
> > $ ./pahole -J ./vmlinux-5.3.18-24.102-default.debug
> > pahole: ./vmlinux-5.3.18-24.102-default.debug: Unknown error -22
> > 
> > Which is not very helpful, but less confusing.
> > 
> > Signed-off-by: Kornilios Kourtis <kornilios@...valent.com>
> > ---
> 
> With the err to -err fix Arnaldo proposed.
> 
> Acked-by: John Fastabend <john.fastabend@...il.com>

Thanks, did the ammendment and collected your Acked-by,

- Arnaldo