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/*
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Data Link API - Unbind Descriptor
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/stropts.h>
#include <sys/dlpi.h>
#include <errno.h>
#include <dluser.h>
#include <dlhdr.h>
extern struct dl_descriptor *_getdesc();
int
dl_unbind(int fd)
{
struct dl_descriptor *dl;
struct strbuf ctl;
int flags;
union DL_primitives prim;
if ((dl = _getdesc(fd)) == NULL) {
errno = EBADF;
return (-1);
}
if (dl->info.state == DLSTATE_IDLE) {
ctl.maxlen = ctl.len = sizeof (dl_unbind_req_t);
ctl.buf = (char *)&prim;
memset(&prim, '\0', sizeof (prim));
prim.dl_primitive = DL_UNBIND_REQ;
} else {
dl->error = DLOUTSTATE;
return (-1);
}
if (putmsg(fd, &ctl, NULL, 0) < 0) {
dl->error = DLSYSERR;
return (-1);
}
ctl.maxlen = sizeof (prim);
flags = 0;
if (getmsg(fd, &ctl, NULL, &flags) < 0) {
dl->error = DLSYSERR;
return (-1);
}
if (prim.dl_primitive != DL_OK_ACK) {
dl->error = DLOUTSTATE;
return (-1);
}
return (0);
}
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