664a31e496
is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
|
|
* random.h -- A strong random number generator
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
* Version 0.95, last modified 18-Oct-95
|
|
*
|
|
* Copyright Theodore Ts'o, 1994, 1995. All rights reserved.
|
|
*
|
|
* 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, and the entire permission notice in its entirety,
|
|
* including the disclaimer of warranties.
|
|
* 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.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* ALTERNATIVELY, this product may be distributed under the terms of
|
|
* the GNU Public License, in which case the provisions of the GPL are
|
|
* required INSTEAD OF the above restrictions. (This clause is
|
|
* necessary due to a potential bad interaction between the GPL and
|
|
* the restrictions contained in a BSD-style copyright.)
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Many kernel routines will have a use for good random numbers,
|
|
* for example, for truely random TCP sequence numbers, which prevent
|
|
* certain forms of TCP spoofing attacks.
|
|
*
|
|
*/
|
|
|
|
#ifndef _MACHINE_RANDOM_H_
|
|
#define _MACHINE_RANDOM_H_
|
|
|
|
#include <sys/ioccom.h>
|
|
|
|
#define MEM_SETIRQ _IOW('r', 1, u_int16_t) /* set interrupt */
|
|
#define MEM_CLEARIRQ _IOW('r', 2, u_int16_t) /* clear interrupt */
|
|
#define MEM_RETURNIRQ _IOR('r', 3, u_int16_t) /* return interrupt */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/* Type of the cookie passed to add_interrupt_randomness. */
|
|
|
|
struct random_softc {
|
|
inthand2_t *sc_handler;
|
|
void *sc_arg;
|
|
int sc_intr;
|
|
};
|
|
|
|
/* Exported functions */
|
|
|
|
void rand_initialize(void);
|
|
void add_keyboard_randomness(u_char scancode);
|
|
inthand2_t add_interrupt_randomness;
|
|
#ifdef notused
|
|
void add_blkdev_randomness(int major);
|
|
#endif
|
|
|
|
#ifdef notused
|
|
void get_random_bytes(void *buf, u_int nbytes);
|
|
#endif
|
|
u_int read_random(void *buf, u_int size);
|
|
u_int read_random_unlimited(void *buf, u_int size);
|
|
#ifdef notused
|
|
u_int write_random(const char *buf, u_int nbytes);
|
|
#endif
|
|
int random_poll(dev_t dev, int events, struct proc *p);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_RANDOM_H_ */
|