[LTP] [PATCH] syscalls/clock_settime03: Fix testcases have been waiting, timeout failure

[Cyril Hrubis]

Hi!
> If the system enables auto-synchronization time configuration,
> this test case will wait until the timeout. Therefore,
> the automatic synchronization time configuration of the system needs to be turned off in the setup phase.
> 
> message:
> tst_test.c:1457: TINFO: Timeout per run is 0h 05m 00s
> clock_settime03.c:35: TINFO: Testing variant: syscall with old kernel spec
> tst_test.c:1506: TINFO: If you are running on slow machine, try exporting LTP_TIMEOUT_MUL > 1
> tst_test.c:1507: TBROK: Test killed! (timeout?)
> 
> Signed-off-by: zhanglianjie <zhanglianjie@uniontech.com>
> 
> diff --git a/testcases/kernel/syscalls/clock_settime/clock_settime03.c b/testcases/kernel/syscalls/clock_settime/clock_settime03.c
> index f196a257c..e783f1d3f 100644
> --- a/testcases/kernel/syscalls/clock_settime/clock_settime03.c
> +++ b/testcases/kernel/syscalls/clock_settime/clock_settime03.c
> @@ -14,9 +14,11 @@
> 
>  #define TIMER_DELTA	3
>  #define ALLOWED_DELTA	(50 * 1000) /* 50 ms */
> +#define BUFF_SIZE PATH_MAX
> 
>  static struct tst_ts start, end;
>  static struct tst_its its;
> +static char cmd[BUFF_SIZE];
> 
>  static struct time64_variants variants[] = {
>  #if (__NR_clock_settime != __LTP__NR_INVALID_SYSCALL)
> @@ -31,6 +33,7 @@ static struct time64_variants variants[] = {
>  static void setup(void)
>  {
>  	struct time64_variants *tv = &variants[tst_variant];
> +	int ret;
> 
>  	tst_res(TINFO, "Testing variant: %s", tv->desc);
>  	start.type = end.type = its.type = tv->ts_type;
> @@ -40,6 +43,11 @@ static void setup(void)
>  	    sizeof(start.ts.kern_old_ts.tv_sec) == 4) {
>  		tst_brk(TCONF, "Not Y2038 safe to run test");
>  	}
> +
> +	snprintf(cmd, sizeof(cmd), "timedatectl set-ntp false");

There is no reason to print the command into a temporary buffer.

> +	ret = tst_system(cmd);
> +	if (ret)
> +		tst_brk(TBROK | TST_ERR, "failed to timedatectl set-ntp");

And this is certainly wrong too.

- The TST_ERR is not correct flag to be passed to tst_brk().

- The test must continue even if the timedatectl is not present on the
  system, otherwise the test will be broken on systems without systemd

So at least we shouldn't exit the test if the tst_system() returned
command-not-found.

>  }
> 
>  static void run(void)
> @@ -109,4 +117,8 @@ static struct tst_test test = {
>  	.setup = setup,
>  	.needs_root = 1,
>  	.restore_wallclock = 1,
> +	.needs_cmds = (const char *[]) {
> +		"timedatectl",
> +		NULL
> +	},

And this is wrong too, again the test should be able to run on systems
without systemd.

>  };
> --
> 2.20.1
> 
> 
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp

-- 
Cyril Hrubis
chrubis@suse.cz