So after digging through some manpages (including man 2 intro (http://www.die.net/doc/linux/man/man2/intro.2.html)), I added the missing macros myself and all seems to be well. I wonder why they were left/taken out to begin with? :-k
--- linux/unistd.h.old 2006-11-02 16:45:36.000000000 -0700
+++ linux/unistd.h 2006-11-02 16:43:29.000000000 -0700
@@ -6,4 +6,41 @@
* Include machine specific syscallX macros
*/
#include <asm/unistd.h>
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{\
+ return syscall(__NR_##name, arg1);\
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1, type2 arg2) \
+{\
+ return syscall(__NR_##name, arg1, arg2);\
+}
+
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,ar g3) \
+type name(type1 arg1, type2 arg2, type3 arg3) \
+{\
+ return syscall(__NR_##name, arg1, arg2, arg3);\
+}
+
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,ar g3,type4,arg4) \
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{\
+ return syscall(__NR_##name, arg1, arg2, arg3, arg4);\
+}
+
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,ar g3,type4,arg4,type5,arg5) \
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
+{\
+ return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5);\
+}
+
+#define _syscall6(type,name,type1,arg1,type2,arg2,type3,ar g3,type4,arg4,type5,arg5,type6,arg6) \
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) \
+{\
+ return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6);\
+}
+
#endif /* _LINUX_UNISTD_H_ */