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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.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Kernel TLI-like function to bind a transport endpoint
* to an address.
*
* Returns 0 on success or positive error code.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/user.h>
#include <sys/errno.h>
#include <sys/stream.h>
#include <sys/strsubr.h>
#include <sys/ioctl.h>
#include <sys/stropts.h>
#include <sys/vnode.h>
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <sys/tiuser.h>
#include <sys/t_kuser.h>
#include <sys/kmem.h>
#include <sys/sysmacros.h>
int
t_kbind(TIUSER *tiptr, struct t_bind *req, struct t_bind *ret)
{
struct T_bind_req *bind_req;
struct T_bind_ack *bind_ack;
int bindsz;
vnode_t *vp;
file_t *fp;
char *buf;
struct strioctl strioc;
int retval;
int error;
error = 0;
retval = 0;
fp = tiptr->fp;
vp = fp->f_vnode;
/*
* send the ioctl request and wait
* for a reply.
*/
bindsz = (req == NULL) ? 0 : req->addr.len;
bindsz = MAX(bindsz, tiptr->tp_info.addr);
bindsz += MAX(TBINDREQSZ, TBINDACKSZ);
buf = kmem_alloc(bindsz, KM_SLEEP);
/* LINTED pointer alignment */
bind_req = (struct T_bind_req *)buf;
bind_req->PRIM_type = T_BIND_REQ;
bind_req->ADDR_length = (req == NULL ? 0 : req->addr.len);
bind_req->ADDR_offset = TBINDREQSZ;
bind_req->CONIND_number = (req == NULL ? 0 : req->qlen);
if (bind_req->ADDR_length)
bcopy(req->addr.buf, buf + bind_req->ADDR_offset,
bind_req->ADDR_length);
strioc.ic_cmd = TI_BIND;
strioc.ic_timout = 0;
strioc.ic_dp = buf;
strioc.ic_len = (int)TBINDREQSZ + bind_req->ADDR_length;
/*
* Usually ioctl()s are performed with the credential of the caller;
* in this particular case we specifically use the credential of
* the opener as this call is typically done in the context of a user
* process but on behalf of the kernel, e.g., a client connection
* to a server which is later shared by different users.
* At open time, we make sure to set fp->f_cred to kcred if such is
* the case.
*/
error = strdoioctl(vp->v_stream, &strioc, FNATIVE, K_TO_K, fp->f_cred,
&retval);
if (error)
goto badbind;
if (retval) {
if ((retval & 0xff) == TSYSERR)
error = (retval >> 8) & 0xff;
else
error = t_tlitosyserr(retval & 0xff);
goto badbind;
}
/* LINTED pointer alignment */
bind_ack = (struct T_bind_ack *)strioc.ic_dp;
if (strioc.ic_len < TBINDACKSZ || bind_ack->ADDR_length == 0) {
error = EIO;
goto badbind;
}
/*
* copy bind data into users buffer
*/
if (ret) {
if (ret->addr.maxlen > bind_ack->ADDR_length)
ret->addr.len = bind_ack->ADDR_length;
else
ret->addr.len = ret->addr.maxlen;
bcopy(buf + bind_ack->ADDR_offset, ret->addr.buf,
ret->addr.len);
ret->qlen = bind_ack->CONIND_number;
}
badbind:
kmem_free(buf, bindsz);
return (error);
}
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