[PATCH] selftests/openat2: Fix build warnings on ppc64

[PATCH] selftests/openat2: Fix build warnings on ppc64

[Michael Ellerman]

Fix warnings like:

  openat2_test.c: In function ‘test_openat2_flags’:
  openat2_test.c:303:73: warning: format ‘%llX’ expects argument of type
  ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long
  unsigned int’} [-Wformat=]

By switching to unsigned long long for u64 for ppc64 builds.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 tools/testing/selftests/openat2/openat2_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/openat2/openat2_test.c b/tools/testing/selftests/openat2/openat2_test.c
index 9024754530b2..5790ab446527 100644
--- a/tools/testing/selftests/openat2/openat2_test.c
+++ b/tools/testing/selftests/openat2/openat2_test.c
@@ -5,6 +5,7 @@
  */
 
 #define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 #include <fcntl.h>
 #include <sched.h>
 #include <sys/stat.h>
-- 
2.45.1

Re: [PATCH] selftests/openat2: Fix build warnings on ppc64

[Muhammad Usama Anjum]

I was looking at if we can add this flag for ppc64 for all selftests
somewhere. But there isn't any suitable place other than in KHDR_INCLUDES.
But there is a series already trying to add _GNU_SOURCE to it. Once that
gets accepted, we may add this flag there by removing the definitions from
individual files. But until then the current solution seems fine:

Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>

On 5/20/24 8:03 PM, Michael Ellerman wrote:
> Fix warnings like:
> 
>   openat2_test.c: In function ‘test_openat2_flags’:
>   openat2_test.c:303:73: warning: format ‘%llX’ expects argument of type
>   ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long
>   unsigned int’} [-Wformat=]
> 
> By switching to unsigned long long for u64 for ppc64 builds.
> 
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
> ---
>  tools/testing/selftests/openat2/openat2_test.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/testing/selftests/openat2/openat2_test.c b/tools/testing/selftests/openat2/openat2_test.c
> index 9024754530b2..5790ab446527 100644
> --- a/tools/testing/selftests/openat2/openat2_test.c
> +++ b/tools/testing/selftests/openat2/openat2_test.c
> @@ -5,6 +5,7 @@
>   */
>  
>  #define _GNU_SOURCE
> +#define __SANE_USERSPACE_TYPES__ // Use ll64
>  #include <fcntl.h>
>  #include <sched.h>
>  #include <sys/stat.h>

-- 
BR,
Muhammad Usama Anjum

Re: [PATCH] selftests/openat2: Fix build warnings on ppc64

[Michael Ellerman]

Muhammad Usama Anjum <usama.anjum@collabora.com> writes:
> I was looking at if we can add this flag for ppc64 for all selftests
> somewhere. But there isn't any suitable place other than in KHDR_INCLUDES.
> But there is a series already trying to add _GNU_SOURCE to it.

IMHO adding other flags to KHDR_INCLUDES is not the right solution, it
conflates unrelated things. Some tests may want the kernel headers but
not _GNU_SOURCE, or vice versa.

Adding a separate define for "standard kselftest flags" would be
preferable, and then something like __SANE_USERSPACE_TYPES__ would make
sense being added to it.

> Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>

Thanks.

cheers

> On 5/20/24 8:03 PM, Michael Ellerman wrote:
>> Fix warnings like:
>> 
>>   openat2_test.c: In function ‘test_openat2_flags’:
>>   openat2_test.c:303:73: warning: format ‘%llX’ expects argument of type
>>   ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long
>>   unsigned int’} [-Wformat=]
>> 
>> By switching to unsigned long long for u64 for ppc64 builds.
>> 
>> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
>> ---
>>  tools/testing/selftests/openat2/openat2_test.c | 1 +
>>  1 file changed, 1 insertion(+)
>> 
>> diff --git a/tools/testing/selftests/openat2/openat2_test.c b/tools/testing/selftests/openat2/openat2_test.c
>> index 9024754530b2..5790ab446527 100644
>> --- a/tools/testing/selftests/openat2/openat2_test.c
>> +++ b/tools/testing/selftests/openat2/openat2_test.c
>> @@ -5,6 +5,7 @@
>>   */
>>  
>>  #define _GNU_SOURCE
>> +#define __SANE_USERSPACE_TYPES__ // Use ll64
>>  #include <fcntl.h>
>>  #include <sched.h>
>>  #include <sys/stat.h>
>
> -- 
> BR,
> Muhammad Usama Anjum

Re: [PATCH] selftests/openat2: Fix build warnings on ppc64

[Shuah Khan]

On 5/20/24 21:03, Michael Ellerman wrote:
> Fix warnings like:
> 
>    openat2_test.c: In function ‘test_openat2_flags’:
>    openat2_test.c:303:73: warning: format ‘%llX’ expects argument of type
>    ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long
>    unsigned int’} [-Wformat=]
> 
> By switching to unsigned long long for u64 for ppc64 builds.
> 
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
> ---
>   tools/testing/selftests/openat2/openat2_test.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/tools/testing/selftests/openat2/openat2_test.c b/tools/testing/selftests/openat2/openat2_test.c
> index 9024754530b2..5790ab446527 100644
> --- a/tools/testing/selftests/openat2/openat2_test.c
> +++ b/tools/testing/selftests/openat2/openat2_test.c
> @@ -5,6 +5,7 @@
>    */
>   
>   #define _GNU_SOURCE
> +#define __SANE_USERSPACE_TYPES__ // Use ll64
>   #include <fcntl.h>
>   #include <sched.h>
>   #include <sys/stat.h>

Applied to linux-kselftest fixes for the next rc.

Michael, If you want to take this through, let me know, I can drop this.

thanks,
-- Shuah