[PATCH v1 2/3] selftests: pidfd: add missing sys/ioctl.h include in pidfd_setns_test.c

[Peter Seiderer <ps.report@xxxxxxx>]

Fix compile on openSUSE Tumbleweed (gcc-14.2.1, glibc-2.40):
  - add missing sys/ioctl.h include

Fixes:

  pidfd_setns_test.c: In function ‘current_nsset_setup’:
  pidfd_setns_test.c:172:54: error: implicit declaration of function ‘ioctl’ [-Wimplicit-function-declaration]
    172 |                 self->child_pidfd_derived_nsfds[i] = ioctl(self->pidfd, info->pidfd_ioctl, 0);
        |                                                      ^~~~~

Signed-off-by: Peter Seiderer <ps.report@xxxxxxx>
---
 tools/testing/selftests/pidfd/pidfd_setns_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/pidfd/pidfd_setns_test.c b/tools/testing/selftests/pidfd/pidfd_setns_test.c
index 222f8131283b..4c8a0253a64f 100644
--- a/tools/testing/selftests/pidfd/pidfd_setns_test.c
+++ b/tools/testing/selftests/pidfd/pidfd_setns_test.c
@@ -17,6 +17,7 @@
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <linux/ioctl.h>
+#include <sys/ioctl.h>
 
 #include "pidfd.h"
 #include "../kselftest_harness.h"
-- 
2.47.1