netdev - Re: [PATCH net-next] bpf: add support for %s specifier to bpf_trace

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Message-ID: <20150827194332.279edaa4@gandalf.local.home>
Date:	Thu, 27 Aug 2015 19:43:32 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	David Miller <davem@...emloft.net>
Cc:	ast@...mgrid.com, mingo@...nel.org, wangnan0@...wei.com,
	hekuang@...wei.com, daniel@...earbox.net,
	brendan.d.gregg@...il.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] bpf: add support for %s specifier to
 bpf_trace_printk()

On Thu, 27 Aug 2015 16:20:39 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: Alexei Starovoitov <ast@...mgrid.com>
> Date: Thu, 27 Aug 2015 16:06:14 -0700
> 
> > Fair or you still think it should be per byte copy?
> 
> I'm terribly surprised we don't have an equivalent of strncpy()
> for unsafe kernel pointers.
> 
> You probably won't be the last person to want this, and it's silly
> to optimize it in one place and then wait for cut&paste into the
> next guy.

If it doesn't exist. Perhaps its time to create it.

-- Steve
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