Handle the case where there is no digest in an EVP_MD_CTX

[openssl.git] / crypto / threads_none.c

diff --git a/crypto/threads_none.c b/crypto/threads_none.c
index 4b1940ae44dbd63a50df824a5d876633a2786796..c12d5610aae1e6bcb69037727a5bd3e96102a9d6 100644 (file)
--- a/crypto/threads_none.c
+++ b/crypto/threads_none.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -12,6 +12,11 @@
 
 #if !defined(OPENSSL_THREADS) || defined(CRYPTO_TDEBUG)
 
+# if defined(OPENSSL_SYS_UNIX)
+#  include <sys/types.h>
+#  include <unistd.h>
+# endif
+
 CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
 {
     CRYPTO_RWLOCK *lock;
@@ -133,4 +138,12 @@ int openssl_init_fork_handlers(void)
     return 0;
 }
 
+int openssl_get_fork_id(void)
+{
+# if defined(OPENSSL_SYS_UNIX)
+    return getpid();
+# else
+    return 0;
+# endif
+}
 #endif