1 files changed, 70 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/fbuf.h b/usr/src/uts/common/sys/fbuf.h
new file mode 100644
index 0000000000..c694c62618
--- /dev/null
+++ b/usr/src/uts/common/sys/fbuf.h
@@ -0,0 +1,70 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1997-1998 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+#ifndef _SYS_FBUF_H
+#define	_SYS_FBUF_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.3	*/
+
+#include <sys/vnode.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * A struct fbuf is used to get a mapping to part of a file using the
+ * segkmap facilities.  After you get a mapping, you can fbrelse() it
+ * (giving a seg code to pass back to segmap_release), you can fbwrite()
+ * it (causes a synchronous write back using the file mapping information),
+ * or you can fbiwrite it (causing indirect synchronous write back to
+ * the block number given without using the file mapping information).
+ */
+
+struct fbuf {
+	caddr_t	fb_addr;
+	uint_t	fb_count;
+};
+
+#if defined(__STDC__)
+extern int fbread(struct vnode *, offset_t, uint_t, enum seg_rw,
+    struct fbuf **);
+extern void fbzero(struct vnode *, offset_t, uint_t, struct fbuf **);
+extern int fbwrite(struct fbuf *);
+extern int fbdwrite(struct fbuf *);
+extern int fbiwrite(struct fbuf *, struct vnode *, daddr_t bn, int bsize);
+extern void fbrelse(struct fbuf *, enum seg_rw);
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_FBUF_H */