Re: [PATCH 1/2] tools/nolibc: Provide vfork()

From: Thomas Weißschuh
Date: Mon Jun 09 2025 - 11:51:37 EST


On 2025-06-09 16:43:55+0100, Mark Brown wrote:
> On Mon, Jun 09, 2025 at 05:34:33PM +0200, Thomas Weißschuh wrote:
> > On 2025-06-09 16:08:56+0100, Mark Brown wrote:

<snip>

> > > +static __attribute__((unused))
> > > +pid_t sys_vfork(void)
> > > +{
> > > +#ifdef __NR_vfork
>
> > For consistency:
> > #if defined(__NR_vfork)
>
> Are you sure? I'm seeing an awful lot of #ifdef __NR_foo instances in
> sys.h - it looks like the idiom is to use that unless it either needs an
> additional condition (with || or &&) or is an elif.

In sys.h, indeed. These have mostly grown historically, newer ones use
#if defined() together with #elif defined().