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random_adaptors.h (256281) random_adaptors.h (256381)
1/*-
2 * Copyright (c) 2013 Arthur Mesh <arthurmesh@gmail.com>
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 *
1/*-
2 * Copyright (c) 2013 Arthur Mesh <arthurmesh@gmail.com>
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: stable/10/sys/dev/random/random_adaptors.h 255379 2013-09-07 22:07:36Z markm $
26 * $FreeBSD: stable/10/sys/dev/random/random_adaptors.h 256381 2013-10-12 15:31:36Z markm $
27 */
28
27 */
28
29#ifndef __RANDOM_ADAPTORS_H__
30#define __RANDOM_ADAPTORS_H__
29#ifndef SYS_DEV_RANDOM_RANDOM_ADAPTORS_H_INCLUDED
30#define SYS_DEV_RANDOM_RANDOM_ADAPTORS_H_INCLUDED
31
32#include <sys/eventhandler.h>
33
31
32#include <sys/eventhandler.h>
33
34MALLOC_DECLARE(M_ENTROPY);
35
34struct random_adaptors {
35 LIST_ENTRY(random_adaptors) entries; /* list of providers */
36 const char *name; /* name of random adaptor */
37 struct random_adaptor *rsp;
38};
39
40struct random_adaptor *random_adaptor_get(const char *);
41int random_adaptor_register(const char *, struct random_adaptor *);
42void random_adaptor_choose(struct random_adaptor **);
43
44extern struct random_adaptor *random_adaptor;
45
46/*
47 * random_adaptor's should be registered prior to
48 * random module (SI_SUB_DRIVERS/SI_ORDER_MIDDLE)
49 */
50#define RANDOM_ADAPTOR_MODULE(name, modevent, ver) \
51 static moduledata_t name##_mod = { \
52 #name, \
53 modevent, \
54 0 \
55 }; \
56 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, \
57 SI_ORDER_SECOND); \
58 MODULE_VERSION(name, ver); \
59 MODULE_DEPEND(name, random, 1, 1, 1);
60
61typedef void (*random_adaptor_attach_hook)(void *, struct random_adaptor *);
62EVENTHANDLER_DECLARE(random_adaptor_attach, random_adaptor_attach_hook);
63
64/* kern.random sysctls */
65#ifdef SYSCTL_DECL /* from sysctl.h */
66SYSCTL_DECL(_kern_random);
67#endif /* SYSCTL_DECL */
68
36struct random_adaptors {
37 LIST_ENTRY(random_adaptors) entries; /* list of providers */
38 const char *name; /* name of random adaptor */
39 struct random_adaptor *rsp;
40};
41
42struct random_adaptor *random_adaptor_get(const char *);
43int random_adaptor_register(const char *, struct random_adaptor *);
44void random_adaptor_choose(struct random_adaptor **);
45
46extern struct random_adaptor *random_adaptor;
47
48/*
49 * random_adaptor's should be registered prior to
50 * random module (SI_SUB_DRIVERS/SI_ORDER_MIDDLE)
51 */
52#define RANDOM_ADAPTOR_MODULE(name, modevent, ver) \
53 static moduledata_t name##_mod = { \
54 #name, \
55 modevent, \
56 0 \
57 }; \
58 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, \
59 SI_ORDER_SECOND); \
60 MODULE_VERSION(name, ver); \
61 MODULE_DEPEND(name, random, 1, 1, 1);
62
63typedef void (*random_adaptor_attach_hook)(void *, struct random_adaptor *);
64EVENTHANDLER_DECLARE(random_adaptor_attach, random_adaptor_attach_hook);
65
66/* kern.random sysctls */
67#ifdef SYSCTL_DECL /* from sysctl.h */
68SYSCTL_DECL(_kern_random);
69#endif /* SYSCTL_DECL */
70
69#endif /* __RANDOM_ADAPTORS_H__ */
71#endif /* SYS_DEV_RANDOM_RANDOM_ADAPTORS_H_INCLUDED */