[thirdparty/rng-tools.git] / rngd_linux.h

/*
 * rngd_linux.h -- Entropy sink for the Linux Kernel (/dev/random)
 *
 * Copyright (C) 2001 Philipp Rumpf
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335  USA
 */

#ifndef RNGD_LINUX__H
#define RNGD_LINUX__H

#include "rng-tools-config.h"

#include <unistd.h>
#include <stdint.h>

/* The default watermark level for this platform */
extern int default_watermark(void);

/*
 * Initialize the interface to the Linux Kernel
 * entropy pool (through /dev/random)
 *
 * randomdev is the path to the random device
 */
extern void init_kernel_rng(const char* randomdev);

/* Send entropy to the kernel */
extern void random_add_entropy(void *buf, size_t size);

/* Sleep until the kernel is hungry for entropy */
extern void random_sleep(void);

#endif /* RNGD_LINUX__H */
Commit	Line	Data
	1	/*
	2	* rngd_linux.h -- Entropy sink for the Linux Kernel (/dev/random)
	3	*
	4	* Copyright (C) 2001 Philipp Rumpf
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
	19	*/
	20
	21	#ifndef RNGD_LINUX__H
	22	#define RNGD_LINUX__H
	23
	24	#include "rng-tools-config.h"
	25
	26	#include <unistd.h>
	27	#include <stdint.h>
	28
	29	/* The default watermark level for this platform */
	30	extern int default_watermark(void);
	31
	32	/*
	33	* Initialize the interface to the Linux Kernel
	34	* entropy pool (through /dev/random)
	35	*
	36	* randomdev is the path to the random device
	37	*/
	38	extern void init_kernel_rng(const char* randomdev);
	39
	40	/* Send entropy to the kernel */
	41	extern void random_add_entropy(void *buf, size_t size);
	42
	43	/* Sleep until the kernel is hungry for entropy */
	44	extern void random_sleep(void);
	45
	46	#endif /* RNGD_LINUX__H */
	47