--- /dev/null
+#ifndef __LUNAIX_UNISTD_H
+#define __LUNAIX_UNISTD_H
+
+#include <lunaix/syscall.h>
+#include <lunaix/types.h>
+
+__LXSYSCALL(pid_t, fork)
+
+__LXSYSCALL1(int, sbrk, void*, addr)
+
+__LXSYSCALL1(void*, brk, size_t, size)
+
+#endif /* __LUNAIX_UNISTD_H */