Copyright (c) 2004, 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]
#include <sys/stream.h> #include <sys/strsun.h> void mcopyout(mblk_t *mp, void *private, size_t size, void *useraddr, mblk_t *dp);
Solaris DDI specific (Solaris DDI).
mp
M_IOCTL or M_IOCDATA message.
private
Value to set the cq_private field of the copyreq(9S) to.
size
Value to set the cq_size field of the copyreq(9S) to.
useraddr
Optionally, the value to set the cq_addr field of the copyreq(9S) to.
dp
Optionally, the payload to copy out.
The mcopyout() function converts an M_IOCTL or M_IOCDATA message into an M_COPYOUT message using the supplied arguments.
To convert the message, mcopyout() changes the message type to M_COPYOUT, and its payload from a iocblk(9S) to a copyreq(9S). Since the iocblk(9S) and copyreq(9S) are designed to overlay one another, the only fields which must be updated are cq_private, cq_size, and cq_addr, which are set to the supplied values. If useraddr is passed as NULL, the M_IOCTL must be transparent and cq_addr is assigned the pointer-sized quantity found at mp->b_cont->b_rptr.
If dp is not NULL, any trailing message blocks associated with mp are freed, mp->b_cont is reset to dp and dp->b_wptr is set to dp->b_rptr + size. Otherwise, any trailing message blocks are unaffected.
None.
This function can be called from user, kernel or interrupt context.
mcopyin(9F), copyreq(9S), iocblk(9S)
STREAMS Programming Guide