[LTP] [PATCH 1/3] commands/keyctl01: Fix potential infinite loop

[Guangwen Feng <fenggw-fnst@cn.fujitsu.com>]

Hi!

Ping, thanks!


Best Regards,
Guangwen Feng

On 05/11/2017 02:20 PM, Guangwen Feng wrote:
> End the loop when max key quota is less than or equal to current
> key usage, in case some errors happen and result in endless loop.
> 
> We expect the test to trigger key quota excess which breaks the
> loop but it may not happen, so add a TWARN message for this.
> 
> Signed-off-by: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
> ---
>  testcases/commands/keyctl/keyctl01.sh | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/testcases/commands/keyctl/keyctl01.sh b/testcases/commands/keyctl/keyctl01.sh
> index 076a130..5a97499 100644
> --- a/testcases/commands/keyctl/keyctl01.sh
> +++ b/testcases/commands/keyctl/keyctl01.sh
> @@ -62,15 +62,17 @@ cleanup()
>  
>  do_test()
>  {
> +	local quota_excd=0
>  	local maxkeysz=$((ORIG_KEYSZ + 100))
>  
> -	while true
> +	while [ $maxkeysz -gt $ORIG_KEYSZ ]
>  	do
>  		echo $maxkeysz >$PATH_KEYQUOTA
>  
>  		keyctl request2 user debug:fred negate @t >temp 2>&1
>  		grep -q -E "quota exceeded" temp
>  		if [ $? -eq 0 ]; then
> +			quota_excd=1
>  			break
>  		fi
>  
> @@ -83,6 +85,10 @@ do_test()
>  		((maxkeysz -= 4))
>  	done
>  
> +	if [ $quota_excd -eq 0 ]; then
> +		tst_res TWARN "Failed to trigger the quota excess"
> +	fi
> +
>  	tst_res TPASS "Bug not reproduced"
>  }
>  
>