Re: [PATCH bpf-next V3 0/2] BPF selftests test runner 'test_progs' use proper shell exit codes

Daniel Borkmann
2020-07-08T22:57:44Z

On 7/7/20 9:12 AM, Jesper Dangaard Brouer wrote:
> This patchset makes it easier to use test_progs from shell scripts, by using
> proper shell exit codes. The process's exit status should be a number
> between 0 and 255 as defined in man exit(3) else it will be masked to comply.
>
> Shell exit codes used by programs should be below 127. As 127 and above are
> used for indicating signals. E.g. 139 means 11=SIGSEGV $((139 & 127))=11.
> POSIX defines in man wait(3p) signal check if WIFSIGNALED(STATUS) and
> WTERMSIG(139)=11. (Hint: cmd 'kill -l' list signals and their numbers).
>
> Using Segmentation fault as an example, as these have happened before with
> different tests (that are part of test_progs). CI people writing these
> shell-scripts could pickup these hints and report them, if that makes sense.
>
> ---
>
> Jesper Dangaard Brouer (2):
> selftests/bpf: test_progs use another shell exit on non-actions
> selftests/bpf: test_progs avoid minus shell exit codes

Applied, thanks!