linux-kernel - Re: [PATCH v3 1/4] exec: introduce get_arg

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 3 Mar 2011 16:47:06 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, pageexec@...email.hu,
	Solar Designer <solar@...nwall.com>,
	Eugene Teo <eteo@...hat.com>,
	Brad Spengler <spender@...ecurity.net>,
	Roland McGrath <roland@...hat.com>,
	Milton Miller <miltonm@....com>
Subject: Re: [PATCH v3 1/4] exec: introduce get_arg_ptr() helper

On 03/03, KOSAKI Motohiro wrote:
>
> > +static const char __user *
> > +get_arg_ptr(const char __user * const __user *argv, int argc)
> > +{
>
> [argc, argv] is natural order to me than [argv, argc].

Yes... in fact, "argc" is misnamed here. It doesn't mean the number of
arguments, it is the index in the array. Perhaps this should be [argv, nr].

> and "get_" prefix are usually used for reference count incrementing
> function in linux. so, i _personally_ prefer to call "user_arg_ptr".

Agreed, the name is ugly. I'll rename and resend keeping your reviewed-by.

[2/4]
> I _personally_ don't like "conditional". Its name is based on code logic.
> It's unclear what mean "conditional". From data strucuture view, It is
> "opaque userland pointer".

I agree with any naming, just suggest a better name ;)

[3/4]
> > +     struct conditional_ptr argv = {
> > +             .is_compat = true, .ptr.compat = __argv,
> > +     };
>
> Please don't mind to compress a line.
>
>         struct conditional_ptr argv = {
>                 .is_compat = true,
>                 .ptr.compat = __argv,
>         };

OK, will do.

Thanks for review!

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/