#define SIOCATMARK _IOR('s', 7, int)
#define SIOCSPGRP _IOW('s', 8, pid_t)
#define SIOCGPGRP _IOR('s', 9, pid_t)
-#define SIOCGSTAMP 0x8906
-#define SIOCGSTAMPNS 0x8907
+#define SIOCGSTAMP _IOR(0x89, 6, char[16])
+#define SIOCGSTAMPNS _IOR(0x89, 7, char[16])