Re: [PATCH v4] selftests: rtc: Improves rtctest error handling.

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On 16/07/2023 23:48:25+0530, Atul Kumar Pant wrote:
> When running the rtctest if we pass wrong rtc device file as an argument
> the test fails expectedly, but prints the logs that are not useful
> to point out the issue.
> To handle this, the patch adds a checks to verify if the rtc_file is valid.
> 
> Signed-off-by: Atul Kumar Pant <atulpant.linux@xxxxxxxxx>
Acked-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>

> ---
> 
> changes since v3:
>     Added Linux-kselftest and Linux-kernel mailing lists.
> 
> changes since v2:
>     Changed error message when rtc file does not exist.
> 
> changes since v1:
>     Removed check for uid=0
>     If rtc file is invalid, then exit the test.
> 
>  tools/testing/selftests/rtc/rtctest.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/rtc/rtctest.c b/tools/testing/selftests/rtc/rtctest.c
> index 63ce02d1d5cc..630fef735c7e 100644
> --- a/tools/testing/selftests/rtc/rtctest.c
> +++ b/tools/testing/selftests/rtc/rtctest.c
> @@ -17,6 +17,7 @@
>  #include <unistd.h>
>  
>  #include "../kselftest_harness.h"
> +#include "../kselftest.h"
>  
>  #define NUM_UIE 3
>  #define ALARM_DELTA 3
> @@ -419,6 +420,8 @@ __constructor_order_last(void)
>  
>  int main(int argc, char **argv)
>  {
> +	int ret = -1;
> +
>  	switch (argc) {
>  	case 2:
>  		rtc_file = argv[1];
> @@ -430,5 +433,11 @@ int main(int argc, char **argv)
>  		return 1;
>  	}
>  
> -	return test_harness_run(argc, argv);
> +	// Run the test if rtc_file is valid
> +	if (access(rtc_file, F_OK) == 0)
> +		ret = test_harness_run(argc, argv);
> +	else
> +		ksft_exit_fail_msg("[ERROR]: Cannot access rtc file %s - Exiting\n", rtc_file);
> +
> +	return ret;
>  }
> -- 
> 2.25.1
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com



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