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/* $OpenBSD: arc4random.h,v 1.4 2015/01/15 06:57:18 deraadt Exp $ */ |
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/* |
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* Copyright (c) 1996, David Mazieres <dm@uun.org> |
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* Copyright (c) 2008, Damien Miller <djm@openbsd.org> |
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* Copyright (c) 2013, Markus Friedl <markus@openbsd.org> |
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* Copyright (c) 2014, Theo de Raadt <deraadt@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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/* |
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* Stub functions for portability. |
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*/ |
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#include <sys/mman.h> |
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#include <signal.h> |
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#include "thread_private.h" |
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static inline void |
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_getentropy_fail(void) |
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{ |
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raise(SIGKILL); |
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} |
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static inline int |
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_rs_allocate(struct _rs **rsp, struct _rsx **rsxp) |
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{ |
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struct { |
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struct _rs rs; |
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struct _rsx rsx; |
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} *p; |
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✗✓ |
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if ((p = mmap(NULL, sizeof(*p), PROT_READ|PROT_WRITE, |
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MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) |
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return (-1); |
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✗✓ |
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if (minherit(p, sizeof(*p), MAP_INHERIT_ZERO) == -1) { |
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munmap(p, sizeof(*p)); |
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return (-1); |
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} |
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*rsp = &p->rs; |
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*rsxp = &p->rsx; |
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return (0); |
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} |
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static inline void |
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_rs_forkdetect(void) |
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{ |
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} |