601e8bcdf4
randomdev_init_reader to change read_random over to the newly installed adaptor was missed. This means both read_random and arc4random (seeded from read_random) were not returning very random data. This also effects userland arc4random as it is seeded from kernel arc4random. The random devices are uneffected and have returned good randomness since the change. All keys generated with a kernel of r273872 must be regenerated with a kernel with this patch. Keys generated may be predictable. Remove the warning as log is too early to print anything, and it would always get printed due to early use of arc4random... Reviewed by: delphij, markm Approved by: so (delphij)
68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/*-
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* Copyright (c) 2000-2013 Mark R V Murray
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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_RANDOMDEV_H_INCLUDED
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#define SYS_DEV_RANDOM_RANDOMDEV_H_INCLUDED
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/* This header contains only those definitions that are global
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* and non algorithm-specific for the entropy processor
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*/
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typedef void random_init_func_t(void);
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typedef void random_deinit_func_t(void);
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void randomdev_init_harvester(void (*)(const void *, u_int, u_int, enum random_entropy_source));
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void randomdev_init_reader(void (*)(uint8_t *, u_int));
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void randomdev_deinit_harvester(void);
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void randomdev_deinit_reader(void);
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/* Stub/fake routines for when no entropy processor is loaded */
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extern void dummy_random_read_phony(uint8_t *, u_int);
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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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/* If this was C++, the macro below would be a template */
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#define RANDOM_CHECK_UINT(name, min, max) \
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static int \
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random_check_uint_##name(SYSCTL_HANDLER_ARGS) \
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{ \
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if (oidp->oid_arg1 != NULL) { \
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if (*(u_int *)(oidp->oid_arg1) <= (min)) \
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*(u_int *)(oidp->oid_arg1) = (min); \
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else if (*(u_int *)(oidp->oid_arg1) > (max)) \
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*(u_int *)(oidp->oid_arg1) = (max); \
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} \
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return (sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, \
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req)); \
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}
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#endif /* SYSCTL_DECL */
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#endif
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