extern int protect(int fd, unsigned long addr, unsigned long len,
int r, int w, int x, int must_succeed);
extern void user_signal(int sig, union uml_pt_regs *regs);
extern int protect(int fd, unsigned long addr, unsigned long len,
int r, int w, int x, int must_succeed);
extern void user_signal(int sig, union uml_pt_regs *regs);