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diff --git a/contrib/sendmail/src/bf_portable.h b/contrib/sendmail/src/bf_portable.h
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+/*
+ * Copyright (c) 1999 Sendmail, Inc. and its suppliers.
+ *	All rights reserved.
+ *
+ * By using this file, you agree to the terms and conditions set
+ * forth in the LICENSE file which can be found at the top level of
+ * the sendmail distribution.
+ *
+ *	$Id: bf_portable.h,v 8.6 1999/11/04 19:31:25 ca Exp $
+ *
+ * Contributed by Exactis.com, Inc.
+ *
+ */
+
+#ifndef BF_PORTABLE_H
+#define BF_PORTABLE_H 1
+/*
+**  This implementation will behave differently from the Torek-based code in
+**  the following major ways:
+**   - The buffer size argument to bfopen() will be sent in, sent back,
+**     queried, lost, found, subjected to public inquiry, lost again, and
+**     finally buried in soft peat and recycled as firelighters.
+**   - Errors in creating the file (but not necessarily writing to it) will
+**     always be detected and reported synchronously with the bfopen()
+*/
+
+/* Linked structure for storing information about each buffered file */
+struct bf
+{
+	FILE		*bf_key;	/* Unused except as a key for lookup */
+	bool		bf_committed;	/* buffered file is on disk */
+	char		*bf_filename;	/* Name of disk file */
+	int		bf_refcount;	/* Reference count */
+	struct bf	*bf_cdr;
+};
+
+/*
+**  Access routines for looking up bf structures
+**
+**	maybe replace with a faster data structure later
+*/
+
+extern void		bfinsert __P((struct bf *));
+extern struct bf	*bflookup __P((FILE *));
+extern struct bf	*bfdelete __P((FILE *));
+#endif /* BF_PORTABLE_H */