WIP 2

ulib/system/system.c

@@ -5,6 +5,7 @@
 #include <sysdefs/ioctl.h>
 #include <sysdefs/processctl.h>
 #include <sysdefs/ipcpipe.h>
+#include <sysdefs/devctl.h>
 #include <uprintf.h>
 
 void debugprint(const char *string) {
@@ -34,3 +35,7 @@ int32_t mman_unmap(uint8_t *addr) {
 int32_t schedrelease(void) {
   return syscall(SYS_SCHEDRELEASE, 0, 0, 0, 0, 0, 0);
 }
+
+int32_t devctl(Dev_t *devh, uint64_t cmd, uint8_t *buffer, size_t len, uint64_t extra) {
+  return syscall(SYS_DEVCTL, (uint64_t)devh, cmd, (uint64_t)buffer, (uint64_t)len, (uint64_t)extra, 0);
+}