diff --git a/src/lib/libcrypto/arc4random/arc4random_linux.h b/src/lib/libcrypto/arc4random/arc4random_linux.h
index 29dad3b9..0da5a4a4 100644
--- a/src/lib/libcrypto/arc4random/arc4random_linux.h
+++ b/src/lib/libcrypto/arc4random/arc4random_linux.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_linux.h,v 1.5 2014/07/19 14:34:38 bcook Exp $	*/
+/*	$OpenBSD: arc4random_linux.h,v 1.6 2014/07/19 15:29:25 bcook Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -28,6 +28,14 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
+#ifdef __GLIBC__
+extern void *__dso_handle;
+extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
+#define _ARC4_ATFORK(f) __register_atfork(NULL, NULL, (f), __dso_handle)
+#else
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+#endif
+
 static volatile sig_atomic_t _rs_forked;
 
 static inline void
diff --git a/src/lib/libcrypto/arc4random/arc4random_osx.h b/src/lib/libcrypto/arc4random/arc4random_osx.h
index 55932bb8..aacbef9a 100644
--- a/src/lib/libcrypto/arc4random/arc4random_osx.h
+++ b/src/lib/libcrypto/arc4random/arc4random_osx.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_osx.h,v 1.5 2014/07/19 14:34:38 bcook Exp $	*/
+/*	$OpenBSD: arc4random_osx.h,v 1.6 2014/07/19 15:29:25 bcook Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -28,6 +28,8 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+
 static volatile sig_atomic_t _rs_forked;
 
 static inline void
diff --git a/src/lib/libcrypto/arc4random/arc4random_solaris.h b/src/lib/libcrypto/arc4random/arc4random_solaris.h
index e5ebbfb7..18b1bd54 100644
--- a/src/lib/libcrypto/arc4random/arc4random_solaris.h
+++ b/src/lib/libcrypto/arc4random/arc4random_solaris.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_solaris.h,v 1.5 2014/07/19 14:34:38 bcook Exp $	*/
+/*	$OpenBSD: arc4random_solaris.h,v 1.6 2014/07/19 15:29:25 bcook Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -28,6 +28,8 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+
 static volatile sig_atomic_t _rs_forked;
 
 static inline void
diff --git a/src/lib/libcrypto/crypto/arc4random_linux.h b/src/lib/libcrypto/crypto/arc4random_linux.h
index 29dad3b9..0da5a4a4 100644
--- a/src/lib/libcrypto/crypto/arc4random_linux.h
+++ b/src/lib/libcrypto/crypto/arc4random_linux.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_linux.h,v 1.5 2014/07/19 14:34:38 bcook Exp $	*/
+/*	$OpenBSD: arc4random_linux.h,v 1.6 2014/07/19 15:29:25 bcook Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -28,6 +28,14 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
+#ifdef __GLIBC__
+extern void *__dso_handle;
+extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
+#define _ARC4_ATFORK(f) __register_atfork(NULL, NULL, (f), __dso_handle)
+#else
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+#endif
+
 static volatile sig_atomic_t _rs_forked;
 
 static inline void
diff --git a/src/lib/libcrypto/crypto/arc4random_osx.h b/src/lib/libcrypto/crypto/arc4random_osx.h
index 55932bb8..aacbef9a 100644
--- a/src/lib/libcrypto/crypto/arc4random_osx.h
+++ b/src/lib/libcrypto/crypto/arc4random_osx.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_osx.h,v 1.5 2014/07/19 14:34:38 bcook Exp $	*/
+/*	$OpenBSD: arc4random_osx.h,v 1.6 2014/07/19 15:29:25 bcook Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -28,6 +28,8 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+
 static volatile sig_atomic_t _rs_forked;
 
 static inline void
diff --git a/src/lib/libcrypto/crypto/arc4random_solaris.h b/src/lib/libcrypto/crypto/arc4random_solaris.h
index e5ebbfb7..18b1bd54 100644
--- a/src/lib/libcrypto/crypto/arc4random_solaris.h
+++ b/src/lib/libcrypto/crypto/arc4random_solaris.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random_solaris.h,v 1.5 2014/07/19 14:34:38 bcook Exp $	*/
+/*	$OpenBSD: arc4random_solaris.h,v 1.6 2014/07/19 15:29:25 bcook Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -28,6 +28,8 @@ static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;
 #define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 #define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
+#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
+
 static volatile sig_atomic_t _rs_forked;
 
 static inline void