RE: [PATCH 2/2] dwarves: cus__load_files: set errno if load fails

[John Fastabend]

kkourt@ wrote:
> From: Kornilios Kourtis <kornilios@xxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxxxx>
> ---

With the err to -err fix Arnaldo proposed.

Acked-by: John Fastabend <john.fastabend@xxxxxxxxx>