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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 - Attach physical unit
*/
#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_attach(int fd, int unit)
{
struct dl_descriptor *dl;
struct strbuf ctl;
int flags;
dl = _getdesc(fd);
if (dl != NULL) {
union DL_primitives prim;
if (dl->info.state != DL_UNATTACHED) {
if (dl->info.style != DL_STYLE_2)
dl->error = DLNOTSUPP;
else if (dl->info.state == DL_BOUND)
dl->error = DLBOUND;
else
dl->error = DLSYSERR;
return (-1);
}
prim.dl_primitive = DL_ATTACH_REQ;
/* this is opaque data of 32-bits */
prim.attach_req.dl_ppa = unit;
ctl.maxlen = ctl.len = sizeof (prim);
ctl.len = ctl.len = sizeof (prim.attach_req);
ctl.buf = (char *)&prim;
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);
}
switch (prim.dl_primitive) {
case DL_ERROR_ACK:
dl->error = prim.error_ack.dl_errno;
errno = prim.error_ack.dl_unix_errno;
return (-1);
case DL_OK_ACK:
dl->info.state = DLSTATE_UNBOUND;
return (0);
default:
dl->error = DLBADPRIM;
return (-1);
}
}
return (-1);
}
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