/*      $NetBSD: nlm_prot_server.c,v 1.2 2016/12/13 21:58:17 pgoyette Exp $     */
/*-
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
* Authors: Doug Rabson <[email protected]>
* Developed with Red Inc: Alfred Perlstein <[email protected]>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>
#ifndef lint
/*static char sccsid[] = "from: @(#)nlm_prot.x 1.8 87/09/21 Copyr 1987 Sun Micro";*/
/*static char sccsid[] = "from: * @(#)nlm_prot.x        2.1 88/08/01 4.0 RPCSRC";*/
/* __RCSID("NetBSD: nlm_prot.x,v 1.6 2000/06/07 14:30:15 bouyer Exp "); */
#endif /* not lint */
/* __FBSDID("FreeBSD: head/sys/nlm/nlm_prot_server.c 197840 2009-10-07 19:50:14Z zml "); */
__RCSID("$NetBSD: nlm_prot_server.c,v 1.2 2016/12/13 21:58:17 pgoyette Exp $");

#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/systm.h>

#include <fs/nfs/nlm/nlm_prot.h>
#include <fs/nfs/nlm/nlm.h>

/**********************************************************************/

/*
* Convert between various versions of the protocol structures.
*/

static void
nlm_convert_to_nlm4_lock(struct nlm4_lock *dst, struct nlm_lock *src)
{

       dst->caller_name = src->caller_name;
       dst->fh = src->fh;
       dst->oh = src->oh;
       dst->svid = src->svid;
       dst->l_offset = src->l_offset;
       dst->l_len = src->l_len;
}

static void
nlm_convert_to_nlm4_share(struct nlm4_share *dst, struct nlm_share *src)
{

       dst->caller_name = src->caller_name;
       dst->fh = src->fh;
       dst->oh = src->oh;
       dst->mode = src->mode;
       dst->access = src->access;
}

static void
nlm_convert_to_nlm_holder(struct nlm_holder *dst, struct nlm4_holder *src)
{

       dst->exclusive = src->exclusive;
       dst->svid = src->svid;
       dst->oh = src->oh;
       dst->l_offset = src->l_offset;
       dst->l_len = src->l_len;
}

static void
nlm_convert_to_nlm4_holder(struct nlm4_holder *dst, struct nlm_holder *src)
{

       dst->exclusive = src->exclusive;
       dst->svid = src->svid;
       dst->oh = src->oh;
       dst->l_offset = src->l_offset;
       dst->l_len = src->l_len;
}

static enum nlm_stats
nlm_convert_to_nlm_stats(enum nlm4_stats src)
{
       if (src > nlm4_deadlck)
               return nlm_denied;
       return (enum nlm_stats) src;
}

static void
nlm_convert_to_nlm_res(struct nlm_res *dst, struct nlm4_res *src)
{
       dst->cookie = src->cookie;
       dst->stat.stat = nlm_convert_to_nlm_stats(src->stat.stat);
}

static void
nlm_convert_to_nlm4_res(struct nlm4_res *dst, struct nlm_res *src)
{
       dst->cookie = src->cookie;
       dst->stat.stat = (enum nlm4_stats) src->stat.stat;
}

/**********************************************************************/

/*
* RPC server stubs.
*/

bool_t
nlm_sm_notify_0_svc(struct nlm_sm_status *argp, void *result, struct svc_req *rqstp)
{
       nlm_sm_notify(argp);

       return (TRUE);
}

bool_t
nlm_test_1_svc(struct nlm_testargs *argp, nlm_testres *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_testargs args4;
       nlm4_testres res4;

       args4.cookie = argp->cookie;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       retval = nlm4_test_4_svc(&args4, &res4, rqstp);
       if (retval) {
               result->cookie = res4.cookie;
               result->stat.stat = nlm_convert_to_nlm_stats(res4.stat.stat);
               if (result->stat.stat == nlm_denied)
                       nlm_convert_to_nlm_holder(
                               &result->stat.nlm_testrply_u.holder,
                               &res4.stat.nlm4_testrply_u.holder);
       }

       return (retval);
}

bool_t
nlm_lock_1_svc(struct nlm_lockargs *argp, nlm_res *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_lockargs args4;
       nlm4_res res4;

       args4.cookie = argp->cookie;
       args4.block = argp->block;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
       args4.reclaim = argp->reclaim;
       args4.state = argp->state;

       retval = nlm4_lock_4_svc(&args4, &res4, rqstp);
       if (retval)
               nlm_convert_to_nlm_res(result, &res4);

       return (retval);
}

bool_t
nlm_cancel_1_svc(struct nlm_cancargs *argp, nlm_res *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_cancargs args4;
       nlm4_res res4;

       args4.cookie = argp->cookie;
       args4.block = argp->block;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       retval = nlm4_cancel_4_svc(&args4, &res4, rqstp);
       if (retval)
               nlm_convert_to_nlm_res(result, &res4);

       return (retval);
}

bool_t
nlm_unlock_1_svc(struct nlm_unlockargs *argp, nlm_res *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_unlockargs args4;
       nlm4_res res4;

       args4.cookie = argp->cookie;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       retval = nlm4_unlock_4_svc(&args4, &res4, rqstp);
       if (retval)
               nlm_convert_to_nlm_res(result, &res4);

       return (retval);
}

bool_t
nlm_granted_1_svc(struct nlm_testargs *argp, nlm_res *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_testargs args4;
       nlm4_res res4;

       args4.cookie = argp->cookie;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       retval = nlm4_granted_4_svc(&args4, &res4, rqstp);
       if (retval)
               nlm_convert_to_nlm_res(result, &res4);

       return (retval);
}

bool_t
nlm_test_msg_1_svc(struct nlm_testargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_testargs args4;
       nlm4_testres res4;
       nlm_testres res;
       CLIENT *rpc;
       char dummy;

       args4.cookie = argp->cookie;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       if (nlm_do_test(&args4, &res4, rqstp, &rpc))
               return (FALSE);

       res.cookie = res4.cookie;
       res.stat.stat = nlm_convert_to_nlm_stats(res4.stat.stat);
       if (res.stat.stat == nlm_denied)
               nlm_convert_to_nlm_holder(
                       &res.stat.nlm_testrply_u.holder,
                       &res4.stat.nlm4_testrply_u.holder);

       if (rpc) {
               nlm_test_res_1(&res, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm_testres, &res);

       return (FALSE);
}

bool_t
nlm_lock_msg_1_svc(struct nlm_lockargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_lockargs args4;
       nlm4_res res4;
       nlm_res res;
       CLIENT *rpc;
       char dummy;

       args4.cookie = argp->cookie;
       args4.block = argp->block;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
       args4.reclaim = argp->reclaim;
       args4.state = argp->state;

       if (nlm_do_lock(&args4, &res4, rqstp, TRUE, &rpc))
               return (FALSE);

       nlm_convert_to_nlm_res(&res, &res4);

       if (rpc) {
               nlm_lock_res_1(&res, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm_res, &res);

       return (FALSE);
}

bool_t
nlm_cancel_msg_1_svc(struct nlm_cancargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_cancargs args4;
       nlm4_res res4;
       nlm_res res;
       CLIENT *rpc;
       char dummy;

       args4.cookie = argp->cookie;
       args4.block = argp->block;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       if (nlm_do_cancel(&args4, &res4, rqstp, &rpc))
               return (FALSE);

       nlm_convert_to_nlm_res(&res, &res4);

       if (rpc) {
               nlm_cancel_res_1(&res, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm_res, &res);

       return (FALSE);
}

bool_t
nlm_unlock_msg_1_svc(struct nlm_unlockargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_unlockargs args4;
       nlm4_res res4;
       nlm_res res;
       CLIENT *rpc;
       char dummy;

       args4.cookie = argp->cookie;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       if (nlm_do_unlock(&args4, &res4, rqstp, &rpc))
               return (FALSE);

       nlm_convert_to_nlm_res(&res, &res4);

       if (rpc) {
               nlm_unlock_res_1(&res, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm_res, &res);

       return (FALSE);
}

bool_t
nlm_granted_msg_1_svc(struct nlm_testargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_testargs args4;
       nlm4_res res4;
       nlm_res res;
       CLIENT *rpc;
       char dummy;

       args4.cookie = argp->cookie;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);

       if (nlm_do_granted(&args4, &res4, rqstp, &rpc))
               return (FALSE);

       nlm_convert_to_nlm_res(&res, &res4);

       if (rpc) {
               nlm_granted_res_1(&res, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm_res, &res);

       return (FALSE);
}

bool_t
nlm_test_res_1_svc(nlm_testres *argp, void *result, struct svc_req *rqstp)
{
       nlm4_testres args4;

       args4.cookie = argp->cookie;
       if (argp->stat.stat == nlm_denied)
               nlm_convert_to_nlm4_holder(
                       &args4.stat.nlm4_testrply_u.holder,
                       &argp->stat.nlm_testrply_u.holder);

       return (nlm4_test_res_4_svc(&args4, result, rqstp));
}

bool_t
nlm_lock_res_1_svc(nlm_res *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res arg4;

       nlm_convert_to_nlm4_res(&arg4, argp);
       return (nlm4_lock_res_4_svc(&arg4, result, rqstp));
}

bool_t
nlm_cancel_res_1_svc(nlm_res *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res arg4;

       nlm_convert_to_nlm4_res(&arg4, argp);
       return (nlm4_cancel_res_4_svc(&arg4, result, rqstp));
}

bool_t
nlm_unlock_res_1_svc(nlm_res *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res arg4;

       nlm_convert_to_nlm4_res(&arg4, argp);
       return (nlm4_unlock_res_4_svc(&arg4, result, rqstp));
}

bool_t
nlm_granted_res_1_svc(nlm_res *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res arg4;

       nlm_convert_to_nlm4_res(&arg4, argp);
       return (nlm4_granted_res_4_svc(&arg4, result, rqstp));
}

int
nlm_prog_1_freeresult(SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)
{

       (void) xdr_free(xdr_result, result);
       return (TRUE);
}

bool_t
nlm_share_3_svc(nlm_shareargs *argp, nlm_shareres *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_shareargs args4;
       nlm4_shareres res4;

       args4.cookie = argp->cookie;
       nlm_convert_to_nlm4_share(&args4.share, &argp->share);
       args4.reclaim = argp->reclaim;

       retval = nlm4_share_4_svc(&args4, &res4, rqstp);
       if (retval) {
               result->cookie = res4.cookie;
               result->stat = nlm_convert_to_nlm_stats(res4.stat);
               result->sequence = res4.sequence;
       }

       return (retval);
}

bool_t
nlm_unshare_3_svc(nlm_shareargs *argp, nlm_shareres *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_shareargs args4;
       nlm4_shareres res4;

       args4.cookie = argp->cookie;
       nlm_convert_to_nlm4_share(&args4.share, &argp->share);
       args4.reclaim = argp->reclaim;

       retval = nlm4_unshare_4_svc(&args4, &res4, rqstp);
       if (retval) {
               result->cookie = res4.cookie;
               result->stat = nlm_convert_to_nlm_stats(res4.stat);
               result->sequence = res4.sequence;
       }

       return (retval);
}

bool_t
nlm_nm_lock_3_svc(nlm_lockargs *argp, nlm_res *result, struct svc_req *rqstp)
{
       bool_t retval;
       nlm4_lockargs args4;
       nlm4_res res4;

       args4.cookie = argp->cookie;
       args4.block = argp->block;
       args4.exclusive = argp->exclusive;
       nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
       args4.reclaim = argp->reclaim;
       args4.state = argp->state;

       retval = nlm4_nm_lock_4_svc(&args4, &res4, rqstp);
       if (retval)
               nlm_convert_to_nlm_res(result, &res4);

       return (retval);
}

bool_t
nlm_free_all_3_svc(nlm_notify *argp, void *result, struct svc_req *rqstp)
{
       struct nlm4_notify args4;

       args4.name = argp->name;
       args4.state = argp->state;

       return (nlm4_free_all_4_svc(&args4, result, rqstp));
}

int
nlm_prog_3_freeresult(SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)
{

       (void) xdr_free(xdr_result, result);
       return (TRUE);
}

bool_t
nlm4_test_4_svc(nlm4_testargs *argp, nlm4_testres *result, struct svc_req *rqstp)
{

       nlm_do_test(argp, result, rqstp, NULL);
       return (TRUE);
}

bool_t
nlm4_lock_4_svc(nlm4_lockargs *argp, nlm4_res *result, struct svc_req *rqstp)
{

       nlm_do_lock(argp, result, rqstp, TRUE, NULL);
       return (TRUE);
}

bool_t
nlm4_cancel_4_svc(nlm4_cancargs *argp, nlm4_res *result, struct svc_req *rqstp)
{

       nlm_do_cancel(argp, result, rqstp, NULL);
       return (TRUE);
}

bool_t
nlm4_unlock_4_svc(nlm4_unlockargs *argp, nlm4_res *result, struct svc_req *rqstp)
{

       nlm_do_unlock(argp, result, rqstp, NULL);
       return (TRUE);
}

bool_t
nlm4_granted_4_svc(nlm4_testargs *argp, nlm4_res *result, struct svc_req *rqstp)
{

       nlm_do_granted(argp, result, rqstp, NULL);
       return (TRUE);
}

bool_t
nlm4_test_msg_4_svc(nlm4_testargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_testres res4;
       CLIENT *rpc;
       char dummy;

       if (nlm_do_test(argp, &res4, rqstp, &rpc))
               return (FALSE);
       if (rpc) {
               nlm4_test_res_4(&res4, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm4_testres, &res4);

       return (FALSE);
}

bool_t
nlm4_lock_msg_4_svc(nlm4_lockargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res res4;
       CLIENT *rpc;
       char dummy;

       if (nlm_do_lock(argp, &res4, rqstp, TRUE, &rpc))
               return (FALSE);
       if (rpc) {
               nlm4_lock_res_4(&res4, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm4_res, &res4);

       return (FALSE);
}

bool_t
nlm4_cancel_msg_4_svc(nlm4_cancargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res res4;
       CLIENT *rpc;
       char dummy;

       if (nlm_do_cancel(argp, &res4, rqstp, &rpc))
               return (FALSE);
       if (rpc) {
               nlm4_cancel_res_4(&res4, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm4_res, &res4);

       return (FALSE);
}

bool_t
nlm4_unlock_msg_4_svc(nlm4_unlockargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res res4;
       CLIENT *rpc;
       char dummy;

       if (nlm_do_unlock(argp, &res4, rqstp, &rpc))
               return (FALSE);
       if (rpc) {
               nlm4_unlock_res_4(&res4, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm4_res, &res4);

       return (FALSE);
}

bool_t
nlm4_granted_msg_4_svc(nlm4_testargs *argp, void *result, struct svc_req *rqstp)
{
       nlm4_res res4;
       CLIENT *rpc;
       char dummy;

       if (nlm_do_granted(argp, &res4, rqstp, &rpc))
               return (FALSE);
       if (rpc) {
               nlm4_granted_res_4(&res4, &dummy, rpc, NULL, nlm_zero_tv);
               CLNT_RELEASE(rpc);
       }
       xdr_free((xdrproc_t) xdr_nlm4_res, &res4);

       return (FALSE);
}

bool_t
nlm4_test_res_4_svc(nlm4_testres *argp, void *result, struct svc_req *rqstp)
{

       return (FALSE);
}

bool_t
nlm4_lock_res_4_svc(nlm4_res *argp, void *result, struct svc_req *rqstp)
{

       return (FALSE);
}

bool_t
nlm4_cancel_res_4_svc(nlm4_res *argp, void *result, struct svc_req *rqstp)
{

       return (FALSE);
}

bool_t
nlm4_unlock_res_4_svc(nlm4_res *argp, void *result, struct svc_req *rqstp)
{

       return (FALSE);
}

bool_t
nlm4_granted_res_4_svc(nlm4_res *argp, void *result, struct svc_req *rqstp)
{

       nlm_do_granted_res(argp, rqstp);
       return (FALSE);
}

bool_t
nlm4_share_4_svc(nlm4_shareargs *argp, nlm4_shareres *result, struct svc_req *rqstp)
{

       memset(result, 0, sizeof(*result));
       result->stat = nlm4_denied;
       return (TRUE);
}

bool_t
nlm4_unshare_4_svc(nlm4_shareargs *argp, nlm4_shareres *result, struct svc_req *rqstp)
{

       memset(result, 0, sizeof(*result));
       result->stat = nlm4_denied;
       return (TRUE);
}

bool_t
nlm4_nm_lock_4_svc(nlm4_lockargs *argp, nlm4_res *result, struct svc_req *rqstp)
{

       nlm_do_lock(argp, result, rqstp, FALSE, NULL);
       return (TRUE);
}

bool_t
nlm4_free_all_4_svc(nlm4_notify *argp, void *result, struct svc_req *rqstp)
{

       nlm_do_free_all(argp);
       return (TRUE);
}

int
nlm_prog_4_freeresult(SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)
{

       (void) xdr_free(xdr_result, result);
       return (TRUE);
}

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