[apparmor] [patch 15/12] v3 unix socket rules

Seth Arnold seth.arnold at canonical.com
Tue Sep 2 23:16:14 UTC 2014


On Sat, Aug 30, 2014 at 07:19:07PM -0700, John Johansen wrote:
> fix output of listen and setopts commands
> 
> The listen and setopts commands have broken encodings because the
> tmp stream they use to handle diverging from the other commands
> has does not set its write position to to the end of the copied data.
> Instead the write head is set to the beginning so that when the
> new data for the command is written it overwrites the begging of
> the command instead of appending to it.
> 
> Signed-off-by: John Johansen <john.johansen at canonical.com>
> 

Acked-by: Seth Arnold <seth.arnold at canonical.com>

Thanks

> ---
> 
> === modified file 'parser/af_unix.cc'
> --- parser/af_unix.cc	2014-08-30 05:32:14 +0000
> +++ parser/af_unix.cc	2014-08-31 02:09:00 +0000
> @@ -316,7 +312,7 @@
>   */
>  int unix_rule::gen_policy_re(Profile &prof)
>  {
> -	std::ostringstream buffer, tmp;
> +	std::ostringstream buffer;
>  	std::string buf;
>  
>  	int mask = mode;
> @@ -371,7 +367,8 @@
>  		}
>  
>  		if (mask & AA_NET_LISTEN) {
> -			tmp.str(buffer.str());
> +			std::ostringstream tmp(buffer.str());
> +			tmp.seekp(0, ios_base::end);
>  			tmp << "\\x" << std::setfill('0') << std::setw(2) << std::hex << CMD_LISTEN;
>  			/* TODO: backlog conditional: for now match anything*/
>  			tmp << "..";
> @@ -383,7 +380,8 @@
>  				goto fail;
>  		}
>  		if (mask & AA_NET_OPT) {
> -			tmp.str(buffer.str());
> +			std::ostringstream tmp(buffer.str());
> +			tmp.seekp(0, ios_base::end);
>  			tmp << "\\x" << std::setfill('0') << std::setw(2) << std::hex << CMD_OPT;
>  			/* TODO: sockopt conditional: for now match anything */
>  			tmp << "..";
> 
> 
> 
> -- 
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