#define _NSIG		64
#define _NSIG_BPW	64
#define _NSIG_WORDS (_NSIG / _NSIG_BPW)

typedef struct {
        unsigned long sig[_NSIG_WORDS];
} sigset_t;

struct sigaction {
	void (*sa_handler)(int);
	unsigned long sa_flags;
	void (*sa_restorer)(int);
	sigset_t sa_mask;
};

struct k_sigaction {
        struct sigaction sa;
};