Hello *,

On Wed, 5 Feb 2025 13:50:31 +0800, I Hsin Cheng richard120310@gmail.com wrote:

In the compilation of pidfs_setns_test.c , a warning as the following will pop out.

pidfd_setns_test.c: In function ‘current_nsset_setup’: pidfd_setns_test.c:173:54: warning: implicit declaration of function \ ‘ioctl’ [-Wimplicit-function-declaration] 173 | self->child_pidfd_derived_nsfds[i] = \ ioctl(self->pidfd, info->pidfd_ioctl, 0);

It's caused by wrong import of header file <linux/ioctl.h>, fix it to <sys/ioctl.h>.

Signed-off-by: I Hsin Cheng richard120310@gmail.com

tools/testing/selftests/pidfd/pidfd_setns_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/pidfd/pidfd_setns_test.c b/tools/testing/selftests/pidfd/pidfd_setns_test.c index 7c2a43491..3ed42f1eb 100644 --- a/tools/testing/selftests/pidfd/pidfd_setns_test.c +++ b/tools/testing/selftests/pidfd/pidfd_setns_test.c @@ -16,7 +16,7 @@ #include <unistd.h> #include <sys/socket.h> #include <sys/stat.h> -#include <linux/ioctl.h> +#include <sys/ioctl.h> #include "pidfd.h" #include "../clone3/clone3_selftests.h"

Predated patch already available, see

https://lore.kernel.org/linux-kselftest/20250115105211.390370-2-ps.report@gm...

Regards, Peter