13.01.2020 11:57, Paul Durrant wrote:
> On Fri, 10 Jan 2020 at 19:42, Vladimir Sementsov-Ogievskiy
> <vsement...@virtuozzo.com> wrote:
>>
>> If we want to add some info to errp (by error_prepend() or
>> error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
>> Otherwise, this info will not be added when errp == &error_fatal
>> (the program will exit prior to the error_append_hint() or
>> error_prepend() call). Fix such cases.
>>
>> If we want to check error after errp-function call, we need to
>> introduce local_err and then propagate it to errp. Instead, use
>> ERRP_AUTO_PROPAGATE macro, benefits are:
>> 1. No need of explicit error_propagate call
>> 2. No need of explicit local_err variable: use errp directly
>> 3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
>> &error_fatal, this means that we don't break error_abort
>> (we'll abort on error_set, not on error_propagate)
>>
>> This commit is generated by command
>>
>> sed -n '/^X86 Xen CPUs$/,/^$/{s/^F: //p}' MAINTAINERS | \
>> xargs git ls-files | grep '\.[hc]$' | \
>> xargs spatch \
>> --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
>> --macro-file scripts/cocci-macro-file.h \
>> --in-place --no-show-diff --max-width 80
>>
>> Reported-by: Kevin Wolf <kw...@redhat.com>
>> Reported-by: Greg Kurz <gr...@kaod.org>
>> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
>
> Acked-by: Paul Durrant <p...@xen.org>
>
Thanks!
--
Best regards,
Vladimir
