Nucleus

diff --git a/include/sys/sched.h b/include/sys/sched.h
new file mode 100644
index 0000000..6cf7f94
--- /dev/null
+++ b/include/sys/sched.h
@@ -0,0 +1,31 @@
+#ifndef _SYS_SCHED_H
+#define _SYS_SCHED_H
+
+#include <sys/types.h>
+
+/* Flags for clone syscall */
+enum CloneFlag {
+	CLONE_NONE    = (0),
+	CLONE_PARENT  = (1 << 0),
+	CLONE_THREAD  = (1 << 1),
+	CLONE_FILES   = (1 << 2),
+	CLONE_FS      = (1 << 3),
+	CLONE_VM      = (1 << 4),
+	CLONE_SIGHAND = (1 << 5),
+	CLONE_IPC     = (1 << 6), // TODO: Add IPC namespace
+};
+
+pid_t getpid(void);
+pid_t clone(int flags);
+_Noreturn void exit(int status);
+
+uid_t getuid(void);
+int setuid(uid_t uid);
+uid_t geteuid(void);
+int seteuid(uid_t euid);
+gid_t getgid(void);
+int setgid(gid_t gid);
+gid_t getegid(void);
+int setegid(gid_t egid);
+
+#endif