blob: 7bee6dd0b64acb075ecc41b8c196a506b8b9f9ce [file] [log] [blame]
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2018, Joyent, Inc.
* Copyright 2013 Nexenta Systems, Inc. All rights reserved.
*/
#ifndef _SYS_RANDOM_H
#define _SYS_RANDOM_H
#include <sys/types.h>
#include <sys/atomic.h>
#ifdef __cplusplus
extern "C" {
#endif
/* stats for the random number devices, /dev/random and /dev/urandom. */
typedef struct rnd_stats {
uint64_t rs_rndOut; /* Bytes generated for /dev/random */
uint64_t rs_rndcOut; /* Bytes read from /dev/random cache */
uint64_t rs_urndOut; /* Bytes generated for /dev/urandom */
} rnd_stats_t;
/* stats for the kernel random number provider, swrand. */
typedef struct swrand_stats {
uint32_t ss_entEst; /* Entropy estimate in bits */
uint64_t ss_entIn; /* Entropy bits added to pool */
uint64_t ss_entOut; /* Entropy bits extracted from pool */
uint64_t ss_bytesIn; /* Total data bytes added to pool */
uint64_t ss_bytesOut; /* Total data bytes extracted from */
/* the pool */
} swrand_stats_t;
#if defined(_KERNEL) || defined(_FAKE_KERNEL)
#define BUMP_CPU_RND_STATS(rm, x, v) (((rm)->rm_mag.rm_stats).x += (v))
#define BUMP_RND_STATS(x, v) atomic_add_64(&(rnd_stats).x, (v))
#define BUMP_SWRAND_STATS(x, v) atomic_add_64(&(swrand_stats).x, (v))
extern int random_add_entropy(uint8_t *, size_t, uint_t);
extern int random_get_bytes(uint8_t *, size_t);
extern int random_get_blocking_bytes(uint8_t *, size_t);
extern int random_get_pseudo_bytes(uint8_t *, size_t);
#endif /* _KERNEL */
/*
* Flags for the getrandom(2) system call.
*/
#define GRND_NONBLOCK 0x0001 /* O_NONBLOCK equiv */
#define GRND_RANDOM 0x0002 /* Use /dev/random, not /dev/urandom */
extern ssize_t getrandom(void *, size_t, unsigned int);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_RANDOM_H */