Provide BIO_up_ref().

3 files changed, 11 insertions, 2 deletions

diff --git a/src/lib/libcrypto/Symbols.list b/src/lib/libcrypto/Symbols.list
index 4e29e85236..854baed64a 100644
--- a/src/lib/libcrypto/Symbols.list
+++ b/src/lib/libcrypto/Symbols.list
@@ -362,6 +362,7 @@ BIO_sock_should_retry
 BIO_socket_ioctl
 BIO_socket_nbio
 BIO_test_flags
+BIO_up_ref
 BIO_vfree
 BIO_vprintf
 BIO_vsnprintf
diff --git a/src/lib/libcrypto/bio/bio.h b/src/lib/libcrypto/bio/bio.h
index 0a05d64929..b85f7181bc 100644
--- a/src/lib/libcrypto/bio/bio.h
+++ b/src/lib/libcrypto/bio/bio.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: bio.h,v 1.38 2018/02/20 18:17:17 tb Exp $ */
+/* $OpenBSD: bio.h,v 1.39 2018/02/22 16:38:43 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -603,6 +603,7 @@ BIO *BIO_new_fp(FILE *stream, int close_flag);
 BIO *   BIO_new(BIO_METHOD *type);
 int     BIO_set(BIO *a, BIO_METHOD *type);
 int     BIO_free(BIO *a);
+int     BIO_up_ref(BIO *bio);
 void    *BIO_get_data(BIO *a);
 void    BIO_set_data(BIO *a, void *ptr);
 void    BIO_set_init(BIO *a, int init);
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)
 {