fat_io_lib port WIP

kernel/device/device.h

@@ -9,6 +9,12 @@
 #include <sync/spin_lock.h>
 #include <sys/smp.h>
 
+#define device_op1(d, op, proc, rctx, a1, a2, a3, a4, ...)                                         \
+  (d)->ops[(op)]((d), (proc), (rctx), (void*)(a1), (void*)(a2), (void*)(a3), (void*)(a4))
+
+#define device_op(d, op, proc, rctx, ...)                                                          \
+  device_op1 (d, op, proc, rctx, __VA_ARGS__, NULL, NULL, NULL, NULL)
+
 struct device;
 
 typedef int (*device_op_func_t) (struct device* device, struct proc*, struct reschedule_ctx* rctx,