Put thread-fork-init inside a run-once guard
Thanks to Christian Heimes for pointing this out.
@@ -169,11 +169,20 @@ int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
return 1;
}
+# ifdef OPENSSL_SYS_UNIX
+static pthread_once_t fork_once_control = PTHREAD_ONCE_INIT;
+
+static void fork_once_func(void)
+{
+ pthread_atfork(OPENSSL_fork_prepare,
+ OPENSSL_fork_parent, OPENSSL_fork_child);
+}
+# endif
+
int openssl_init_fork_handlers(void)
{
# ifdef OPENSSL_SYS_UNIX
- if (pthread_atfork(OPENSSL_fork_prepare,
- OPENSSL_fork_parent, OPENSSL_fork_child) == 0)
+ if (pthread_once(&fork_once_control, fork_once_func) == 0)
return 1;
# endif
return 0;
