Differential D22512 Diff 65940 sys/dev/random/randomdev.h

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sys/dev/random/randomdev.h

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	/*			/*
	* Random Algorithm is a processor of randomness for the kernel			* Random Algorithm is a processor of randomness for the kernel
	* and for userland.			* and for userland.
	*/			*/
	struct random_algorithm {			struct random_algorithm {
	const char *ra_ident;			const char *ra_ident;
	u_int ra_poolcount;			u_int ra_poolcount;
	void (ra_init_alg)(void );
	void (ra_deinit_alg)(void );
	random_alg_pre_read_t *ra_pre_read;			random_alg_pre_read_t *ra_pre_read;
	random_alg_read_t *ra_read;			random_alg_read_t *ra_read;
	random_alg_seeded_t *ra_seeded;			random_alg_seeded_t *ra_seeded;
	random_alg_eventprocessor_t *ra_event_processor;			random_alg_eventprocessor_t *ra_event_processor;
	};			};

	extern struct random_algorithm random_alg_context, *p_random_alg_context;			#if defined(RANDOM_LOADABLE)
				extern const struct random_algorithm *p_random_alg_context;
				#else
				extern const struct random_algorithm random_alg_context;
				#define p_random_alg_context (&random_alg_context)
				#endif

	#ifdef _KERNEL			#ifdef _KERNEL

	/*			/*
	* Random Source is a source of entropy that can provide			* Random Source is a source of entropy that can provide
	* specified or approximate amount of entropy immediately			* specified or approximate amount of entropy immediately
	* upon request.			* upon request.
	*/			*/
	struct random_source {			struct random_source {
	const char *rs_ident;			const char *rs_ident;
	enum random_entropy_source rs_source;			enum random_entropy_source rs_source;
	random_source_read_t *rs_read;			random_source_read_t *rs_read;
	};			};

	void random_source_register(struct random_source *);			void random_source_register(struct random_source *);
	void random_source_deregister(struct random_source *);			void random_source_deregister(struct random_source *);

	#if defined(RANDOM_LOADABLE)
	extern struct sx randomdev_config_lock;
	#define RANDOM_CONFIG_INIT_LOCK(x) sx_init(&randomdev_config_lock, "configuration change lock")
	#define RANDOM_CONFIG_X_LOCK(x) sx_xlock(&randomdev_config_lock)
	#define RANDOM_CONFIG_X_UNLOCK(x) sx_xunlock(&randomdev_config_lock)
	#define RANDOM_CONFIG_S_LOCK(x) sx_slock(&randomdev_config_lock)
	#define RANDOM_CONFIG_S_UNLOCK(x) sx_sunlock(&randomdev_config_lock)
	#define RANDOM_CONFIG_DEINIT_LOCK(x) sx_destroy(&randomdev_config_lock)
	void random_infra_init(int ()(struct uio , bool), void ()(void , u_int),
	bool (*)(void));
	void random_infra_uninit(void);
	#endif
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	#endif /* _KERNEL */			#endif /* _KERNEL */

	void randomdev_unblock(void);			void randomdev_unblock(void);

	#endif /* SYS_DEV_RANDOM_RANDOMDEV_H_INCLUDED */			#endif /* SYS_DEV_RANDOM_RANDOMDEV_H_INCLUDED */