72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/*-
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* Copyright (c) 2013 Arthur Mesh <arthurmesh@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef SYS_DEV_RANDOM_RANDOM_ADAPTORS_H_INCLUDED
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#define SYS_DEV_RANDOM_RANDOM_ADAPTORS_H_INCLUDED
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#include <sys/eventhandler.h>
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MALLOC_DECLARE(M_ENTROPY);
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struct random_adaptors {
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LIST_ENTRY(random_adaptors) entries; /* list of providers */
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const char *name; /* name of random adaptor */
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struct random_adaptor *rsp;
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};
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struct random_adaptor *random_adaptor_get(const char *);
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int random_adaptor_register(const char *, struct random_adaptor *);
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void random_adaptor_choose(struct random_adaptor **);
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extern struct random_adaptor *random_adaptor;
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/*
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* random_adaptor's should be registered prior to
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* random module (SI_SUB_DRIVERS/SI_ORDER_MIDDLE)
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*/
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#define RANDOM_ADAPTOR_MODULE(name, modevent, ver) \
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static moduledata_t name##_mod = { \
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#name, \
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modevent, \
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0 \
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}; \
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DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, \
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SI_ORDER_SECOND); \
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MODULE_VERSION(name, ver); \
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MODULE_DEPEND(name, random, 1, 1, 1);
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typedef void (*random_adaptor_attach_hook)(void *, struct random_adaptor *);
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EVENTHANDLER_DECLARE(random_adaptor_attach, random_adaptor_attach_hook);
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/* kern.random sysctls */
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#ifdef SYSCTL_DECL /* from sysctl.h */
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SYSCTL_DECL(_kern_random);
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#endif /* SYSCTL_DECL */
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#endif /* SYS_DEV_RANDOM_RANDOM_ADAPTORS_H_INCLUDED */
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