linux-kernel - Re: [Patch] signal: let valid

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Message-ID: <20081226085654.GE755@elte.hu>
Date:	Fri, 26 Dec 2008 09:56:54 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Américo Wang <xiyou.wangcong@...il.com>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [Patch] signal: let valid_signal() check more


* Américo Wang <xiyou.wangcong@...il.com> wrote:

> >> @@ -727,7 +727,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
> >>  	{
> >>  		if (!perm || !capable(CAP_KILL))
> >>  			goto eperm;
> >> -		if (!valid_signal(arg) || arg < 1 || arg == SIGKILL)
> >> +		if (!valid_signal((int)arg) || arg == SIGKILL)
> >                                  ^^^^^
> >
> >The patch adds a lot of unnecessary typecasts like this.
> 
> because it's inline?

Why does your patch add a lot of seemingly unnecessary typecasts? [if your 
short reply was supposed to be an answer to that question then please 
explain it in more detail.]

	Ingo
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