[LTP] [PATCH v2] syscalls/keyctl02: Fix insufficiency of default key count quota

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

Hi!

Please ignore this one, I will send a V3, sorry.


Best Regards,
Guangwen Feng

On 03/29/2017 03:12 PM, Guangwen Feng wrote:
> Adding and revoking keys rapidly in loops will take a significant
> number of key count quota, because it takes time to free the
> instantiated keys, so temporarily raise the quota when testing.
> 
> Signed-off-by: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
> ---
>  testcases/kernel/syscalls/keyctl/keyctl02.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/testcases/kernel/syscalls/keyctl/keyctl02.c b/testcases/kernel/syscalls/keyctl/keyctl02.c
> index 11d3af9..1fdea79 100644
> --- a/testcases/kernel/syscalls/keyctl/keyctl02.c
> +++ b/testcases/kernel/syscalls/keyctl/keyctl02.c
> @@ -48,6 +48,9 @@
>  #ifdef HAVE_KEYUTILS_H
>  
>  #define LOOPS	20000
> +#define PATH_KEY_COUNT_QUOTA	"/proc/sys/kernel/keys/root_maxkeys"
> +
> +static int orig_maxkeys;
>  
>  static void *do_read(void *arg)
>  {
> @@ -98,9 +101,22 @@ static void do_test(void)
>  	tst_res(TPASS, "Bug not reproduced");
>  }
>  
> +static void setup(void)
> +{
> +	SAFE_FILE_SCANF(PATH_KEY_COUNT_QUOTA, "%d", &orig_maxkeys);
> +	SAFE_FILE_PRINTF(PATH_KEY_COUNT_QUOTA, "%d", orig_maxkeys + LOOPS);
> +}
> +
> +static void cleanup(void)
> +{
> +	SAFE_FILE_PRINTF(PATH_KEY_COUNT_QUOTA, "%d", orig_maxkeys);
> +}
> +
>  static struct tst_test test = {
>  	.tid = "keyctl02",
>  	.needs_root = 1,
> +	.setup = setup,
> +	.cleanup = cleanup,
>  	.test_all = do_test,
>  };
>  
>