1 files changed, 22 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/src/os_posix/os_errno.c b/src/third_party/wiredtiger/src/os_posix/os_errno.c
new file mode 100644
index 00000000000..9290f7d651f
--- /dev/null
+++ b/src/third_party/wiredtiger/src/os_posix/os_errno.c
@@ -0,0 +1,22 @@
+/*-
+ * Copyright (c) 2008-2014 WiredTiger, Inc.
+ *	All rights reserved.
+ *
+ * See the file LICENSE for redistribution information.
+ */
+
+#include "wt_internal.h"
+
+/*
+ * __wt_errno --
+ *	Return errno, or WT_ERROR if errno not set.
+ */
+int
+__wt_errno(void)
+{
+	/*
+	 * Called when we know an error occurred, and we want the system
+	 * error code, but there's some chance it's not set.
+	 */
+	return (errno == 0 ? WT_ERROR : errno);
+}