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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 (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright 2018 Nexenta Systems, Inc. All rights reserved.
*/
/*
* kTLI variant of t_optmgmt(3NSL)
* Returns 0 on success or an errno value.
* Similar to libnsl t_optmgmt.c
*
* Note: This expects the caller's struct t_optmgmt to contain the
* XTI version of struct T_opthdr (used with T_OPTMGMT_REQ == 27)
* not the old "struct opthdr" (used with T_SVR4_OPTMGMT_REQ == 9)
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/user.h>
#include <sys/vnode.h>
#include <sys/errno.h>
#include <sys/stream.h>
#include <sys/ioctl.h>
#include <sys/stropts.h>
#include <sys/strsubr.h>
#define _SUN_TPI_VERSION 2
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <sys/tiuser.h>
#include <sys/t_kuser.h>
#include <sys/kmem.h>
int
t_koptmgmt(TIUSER *tiptr, struct t_optmgmt *req, struct t_optmgmt *ret)
{
struct strioctl strioc;
struct T_optmgmt_req *opt_req;
struct T_optmgmt_ack *opt_ack;
file_t *fp;
vnode_t *vp;
char *ctlbuf = NULL;
char *opt_data;
t_scalar_t optlen;
int ctlsize;
int retval;
int error;
fp = tiptr->fp;
vp = fp->f_vnode;
optlen = req->opt.len;
if (optlen > 0) {
if (req->opt.buf == NULL)
return (EINVAL);
if (optlen < (t_scalar_t)sizeof (struct T_opthdr)) {
/* option buffer should atleast have an t_opthdr */
return (EINVAL);
}
/* sanity limit */
if (optlen > 4096) {
return (EINVAL);
}
}
ctlsize = sizeof (*opt_req) + optlen;
ctlbuf = kmem_alloc(ctlsize, KM_SLEEP);
/* LINTED E_BAD_PTR_CAST_ALIGN */
opt_req = (struct T_optmgmt_req *)ctlbuf;
opt_req->PRIM_type = T_OPTMGMT_REQ;
opt_req->MGMT_flags = req->flags;
opt_req->OPT_length = optlen;
opt_req->OPT_offset = sizeof (*opt_req);
if (optlen > 0) {
opt_data = ctlbuf + sizeof (*opt_req);
bcopy(req->opt.buf, opt_data, optlen);
}
strioc.ic_cmd = TI_OPTMGMT;
strioc.ic_timout = 0;
strioc.ic_dp = ctlbuf;
strioc.ic_len = ctlsize;
error = strdoioctl(vp->v_stream, &strioc, FNATIVE, K_TO_K,
fp->f_cred, &retval);
if (error)
goto errout;
if (retval) {
if ((retval & 0xff) == TSYSERR)
error = (retval >> 8) & 0xff;
else
error = t_tlitosyserr(retval & 0xff);
goto errout;
}
if (strioc.ic_len < sizeof (struct T_optmgmt_ack)) {
error = EPROTO;
goto errout;
}
/* LINTED pointer cast */
opt_ack = (struct T_optmgmt_ack *)ctlbuf;
if (opt_ack->PRIM_type != T_OPTMGMT_ACK) {
error = EPROTO;
goto errout;
}
if (ret->opt.maxlen > 0) {
if (opt_ack->OPT_length > ret->opt.maxlen) {
error = EMSGSIZE;
goto errout;
}
ret->opt.len = opt_ack->OPT_offset;
opt_data = ctlbuf + opt_ack->OPT_offset;
bcopy(opt_data, ret->opt.buf, ret->opt.len);
}
ret->flags = opt_ack->MGMT_flags;
errout:
if (ctlbuf != NULL)
kmem_free(ctlbuf, ctlsize);
return (error);
}
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