netdev - Re: [PATCH iproute2] ip: Simplify executing ip cmd within namespace

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Message-ID: <20141211190846.1e25e7fa@griffin>
Date:	Thu, 11 Dec 2014 19:08:46 +0100
From:	Jiri Benc <jbenc@...hat.com>
To:	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc:	vadim4j@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] ip: Simplify executing ip cmd within namespace

On Thu, 11 Dec 2014 15:33:34 -0200, Marcelo Ricardo Leitner wrote:
> In that case, it would be interesting to also accelerate the original use 
> case, no? So all usages we currently have will benefit from this speed up 
> without a change.
> 
> if (command to be executed == myself)
>    switch namespace, continue without fork/exec..

It's never good idea to do such tricks behind the user's back. This
particular case could easily break for users wanting to execute a
different ip binary (for whatever reason).

All programs should do what they are told to do, not try to outsmart
the user.

 Jiri

-- 
Jiri Benc
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