Mirror of BoringSSL (grpc依赖)
https://boringssl.googlesource.com/boringssl
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46 lines
1.5 KiB
46 lines
1.5 KiB
/* Copyright (c) 2017, Google Inc. |
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* |
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* Permission to use, copy, modify, and/or 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 ANY |
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* 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 ACTION |
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
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#include <openssl/rand.h> |
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#include <stdlib.h> |
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#include "../fipsmodule/rand/internal.h" |
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// g_buffering_enabled is true if fork-unsafe buffering has been enabled. |
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static int g_buffering_enabled = 0; |
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// g_lock protects |g_buffering_enabled|. |
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static struct CRYPTO_STATIC_MUTEX g_lock = CRYPTO_STATIC_MUTEX_INIT; |
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#if !defined(OPENSSL_WINDOWS) |
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void RAND_enable_fork_unsafe_buffering(int fd) { |
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// We no longer support setting the file-descriptor with this function. |
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if (fd != -1) { |
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abort(); |
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} |
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CRYPTO_STATIC_MUTEX_lock_write(&g_lock); |
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g_buffering_enabled = 1; |
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CRYPTO_STATIC_MUTEX_unlock_write(&g_lock); |
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} |
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#endif |
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int rand_fork_unsafe_buffering_enabled(void) { |
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CRYPTO_STATIC_MUTEX_lock_read(&g_lock); |
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const int ret = g_buffering_enabled; |
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CRYPTO_STATIC_MUTEX_unlock_read(&g_lock); |
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return ret; |
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}
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