Provide BIO_up_ref().

1 files changed, 8 insertions, 1 deletions

diff --git a/src/lib/libcrypto/bio/bio_lib.c b/src/lib/libcrypto/bio/bio_lib.c
index 8ad54cefd2..ddab542881 100644
--- a/src/lib/libcrypto/bio/bio_lib.c
+++ b/src/lib/libcrypto/bio/bio_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: bio_lib.c,v 1.26 2018/02/20 17:55:26 tb Exp $ */
+/* $OpenBSD: bio_lib.c,v 1.27 2018/02/22 16:38:43 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -151,6 +151,13 @@ BIO_vfree(BIO *a)
         BIO_free(a);
 }
 
+int
+BIO_up_ref(BIO *bio)
+{
+        int refs = CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO);
+        return (refs > 1) ? 1 : 0;
+}
+
 void *
 BIO_get_data(BIO *a)
 {