xref: /freebsd/sys/dev/random/randomdev.h (revision 8d20be1e22095c27faf8fe8b2f0d089739cc742e)
1 /*-
2  * Copyright (c) 2000-2013 Mark R V Murray
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer
10  *    in this position and unchanged.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef SYS_DEV_RANDOM_RANDOMDEV_H_INCLUDED
30 #define SYS_DEV_RANDOM_RANDOMDEV_H_INCLUDED
31 
32 /* This header contains only those definitions that are global
33  * and non algorithm-specific for the entropy processor
34  */
35 
36 typedef void random_init_func_t(void);
37 typedef void random_deinit_func_t(void);
38 typedef int random_block_func_t(int);
39 typedef int random_read_func_t(void *, int);
40 typedef int random_poll_func_t(int, struct thread *);
41 typedef void random_reseed_func_t(void);
42 
43 struct random_adaptor {
44 	struct selinfo		rsel;
45 	const char		*ident;
46 	int			seeded;
47 	unsigned		priority;
48 	random_init_func_t	*init;
49 	random_deinit_func_t	*deinit;
50 	random_block_func_t	*block;
51 	random_read_func_t	*read;
52 	random_poll_func_t	*poll;
53 	random_reseed_func_t	*reseed;
54 };
55 
56 struct random_hardware_source {
57 	const char		*ident;
58 	enum esource		source;
59 	random_read_func_t	*read;
60 };
61 
62 #endif
63