X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fbio%2Fbio.h;h=7f49ccbe9dd6f7bb5e0b429d5e06ada8e996a12e;hp=13817925aa69e1515a165d2081ec88224471db65;hb=ea1b02db6ab4864befde88ed03099f075cf7db76;hpb=2c4b354d32b1f34314f1a3ebeee0d0fcfb7505a0

diff --git a/crypto/bio/bio.h b/crypto/bio/bio.h
index 13817925aa..7f49ccbe9d 100644
--- a/crypto/bio/bio.h
+++ b/crypto/bio/bio.h
@@ -169,6 +169,11 @@ extern "C" {
 #define BIO_FLAGS_IO_SPECIAL	0x04
 #define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
 #define BIO_FLAGS_SHOULD_RETRY	0x08
+#ifndef	BIO_FLAGS_UPLINK
+/* "UPLINK" flag denotes file descriptors provided by application.
+   It defaults to 0, as most platforms don't require UPLINK interface. */
+#define	BIO_FLAGS_UPLINK	0
+#endif
 
 /* Used in BIO_gethostbyname() */
 #define BIO_GHBN_CTRL_HITS		1