Re: [PATCH v3] seccomp: add ptrace options for suspend/resume

From: Oleg Nesterov
Date: Fri Jun 05 2015 - 19:49:03 EST


On 06/05, Tycho Andersen wrote:
>
> right thing to do, just leave out the definition of
> may_suspend_seccomp all together, or add in another if defined() in
> the header?

Just declare it unconditionally in .h. The kernel relies on this kind
of dead-code elimination anyway. For example, please look at
"extern void __put_user_bad(void)" in uaccess.h.

IOW,

extern void undefined_func(void);

if (0)
undefined_func();

should be safe.

> Maybe we will get rid of this pesky function all together though...

Yes ;)

Oleg.

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