Hello *, On Wed, 5 Feb 2025 13:50:31 +0800, I Hsin Cheng <richard120310@xxxxxxxxx> 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@xxxxxxxxx> > --- > 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@xxxxxxx/ Regards, Peter
