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SubjectRe: [PATCH v5] selftests: rtc: Fixes rtctest error handling.
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On 7/17/23 15:15, Alexandre Belloni wrote:
> On 17/07/2023 23:22:51+0530, Atul Kumar Pant wrote:
>> Adds a check to verify if the rtc device file is valid or not
>> and prints a useful error message if the file is not accessible.
>>
>> Signed-off-by: Atul Kumar Pant <atulpant.linux@gmail.com>
>
> Please collect and keep the tags you got on previous versions
>
>> ---
>>
>> changes since v4:
>> Updated the commit message.
>>
>> 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);

This should be skip not a fail. access() could for a number of reasons.
Since the test isn't run when access() returns error, this would be a
skip. Also the new message could be improved to use strerror() to
print message with details on why access() failed.

thanks,
-- Shuah

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