extern int os_get_ifname(int fd, char *namebuf);
extern int os_set_slip(int fd);
extern int os_set_owner(int fd, int pid);
-extern int os_sigio_async(int master, int slave);
extern int os_mode_fd(int fd, int mode);
extern int os_seek_file(int fd, __u64 offset);
extern void sig_handler_common_skas(int sig, void *sc_ptr);
extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
+extern int os_arch_prctl(int pid, int code, unsigned long *addr);
+
#endif