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Copyright 1989 AT&T
Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved
The contents of this file are subject to the terms of the Common Development and Distribution License (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]
Copyright 1989 AT&T
Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved
The contents of this file are subject to the terms of the Common Development and Distribution License (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]
clrbuf 9F "16 Jan 2006" "SunOS 5.11" "Kernel Functions for Drivers"
NAME
clrbuf - erase the contents of a buffer
SYNOPSIS
#include <sys/types.h> #include <sys/buf.h> void clrbuf(struct buf *bp);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
PARAMETERS
bp
Pointer to the buf(9S) structure.
DESCRIPTION
The clrbuf() function zeros a buffer and sets the b_resid member of the buf(9S) structure to 0. Zeros are placed in the buffer starting at bp\(->b_un.b_addr for a length of bp\(->b_bcount bytes. b_un.b_addr and b_bcount are members of the buf(9S) data structure.
CONTEXT
The clrbuf() function can be called from user, interrupt, or kernel context.
SEE ALSO
getrbuf(9F), buf(9S)
Writing Device Drivers