linux-kernel - Re: [PATCH] trace: using strlcpy instead of strncpy

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Date:	Thu, 20 Jun 2013 08:20:02 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Zhao Hongjiang <zhaohongjiang@...wei.com>
Cc:	fweisbec@...il.com, mingo@...hat.com, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] trace: using strlcpy instead of strncpy

This fix is to a networking tracepoint. It should go through the
networking folks.

-- Steve


On Thu, 2013-06-20 at 19:07 +0800, Zhao Hongjiang wrote:
> for NUL terminated string, need alway set '\0' in the end.
> 
> Signed-off-by: Zhao Hongjiang <zhaohongjiang@...wei.com>
> ---
>  include/trace/events/sock.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/include/trace/events/sock.h b/include/trace/events/sock.h
> index 779abb9..333d8b5 100644
> --- a/include/trace/events/sock.h
> +++ b/include/trace/events/sock.h
> @@ -44,7 +44,7 @@ TRACE_EVENT(sock_exceed_buf_limit,
>  	),
>  
>  	TP_fast_assign(
> -		strncpy(__entry->name, prot->name, 32);
> +		strlcpy(__entry->name, prot->name, 32);
>  		__entry->sysctl_mem = prot->sysctl_mem;
>  		__entry->allocated = allocated;
>  		__entry->sysctl_rmem = prot->sysctl_rmem[0];


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