dl_attach.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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 2003 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();
dl_attach(fd, unit)
int fd, 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;
prim.attach_req.dl_ppa = unit; /* this is opaque data of 32-bits */
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;
}