/*      $NetBSD: random.h,v 1.1 2020/08/14 00:53:16 riastradh Exp $     */

/*-
 * Copyright (c) 2020 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Taylor R. Campbell.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SYS_RANDOM_H
#define _SYS_RANDOM_H

#include <sys/cdefs.h>

#include <machine/ansi.h>       /* _BSD_SIZE_T_ */

#define GRND_NONBLOCK   (1u << 0)
#define GRND_RANDOM     (1u << 1)
#define GRND_INSECURE   (1u << 2)

#ifdef _KERNEL

struct uio;

int     dogetrandom(struct uio *, unsigned int);

#endif  /* _KERNEL */

#ifndef _KERNEL
__BEGIN_DECLS

#ifdef  _BSD_SIZE_T_
typedef _BSD_SIZE_T_    size_t;
#undef  _BSD_SIZE_T_
#endif

#ifdef  _BSD_SSIZE_T_
typedef _BSD_SSIZE_T_   ssize_t;
#undef  _BSD_SSIZE_T_
#endif

ssize_t getrandom(void *, size_t, unsigned int);

__END_DECLS
#endif  /* !_KERNEL */

#endif  /* _SYS_RANDOM_H */