fs/lockd/svcproc.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * linux/fs/lockd/svcproc.c
  *
  * Lockd server procedures. We don't implement the NLM_*_RES
  * procedures because we don't use the async procedures.
  *
  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
  */

 #include <linux/types.h>
 #include <linux/time.h>
 #include <linux/lockd/lockd.h>
 #include <linux/lockd/share.h>
 #include <linux/sunrpc/svc_xprt.h>

 #define NLMDBG_FACILITY		NLMDBG_CLIENT

 #ifdef CONFIG_LOCKD_V4
 static __be32
 cast_to_nlm(__be32 status, u32 vers)
 {
 	/* Note: status is assumed to be in network byte order !!! */
 	if (vers != 4){
 		switch (status) {
 		case nlm_granted:
 		case nlm_lck_denied:
 		case nlm_lck_denied_nolocks:
 		case nlm_lck_blocked:
 		case nlm_lck_denied_grace_period:
 		case nlm_drop_reply:
 			break;
 		case nlm4_deadlock:
 			status = nlm_lck_denied;
 			break;
 		default:
 			status = nlm_lck_denied_nolocks;
 		}
 	}

 	return (status);
 }
 #define	cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
 #else
 #define cast_status(status) (status)
 #endif

 /*
  * Obtain client and file from arguments
  */
 static __be32
 nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
 			struct nlm_host **hostp, struct nlm_file **filp)
 {
 	struct nlm_host		*host = NULL;
 	struct nlm_file		*file = NULL;
 	struct nlm_lock		*lock = &argp->lock;
 	__be32			error = 0;

 	/* nfsd callbacks must have been installed for this procedure */
 	if (!nlmsvc_ops)
 		return nlm_lck_denied_nolocks;

 	/* Obtain host handle */
 	if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
 	 || (argp->monitor && nsm_monitor(host) < 0))
 		goto no_locks;
 	*hostp = host;

 	/* Obtain file pointer. Not used by FREE_ALL call. */
 	if (filp != NULL) {
 		error = cast_status(nlm_lookup_file(rqstp, &file, &lock->fh));
 		if (error != 0)
 			goto no_locks;
 		*filp = file;

 		/* Set up the missing parts of the file_lock structure */
 		lock->fl.fl_file  = file->f_file;
 		lock->fl.fl_pid = current->tgid;
 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
 		nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
 		if (!lock->fl.fl_owner) {
 			/* lockowner allocation has failed */
 			nlmsvc_release_host(host);
 			return nlm_lck_denied_nolocks;
 		}
 	}

 	return 0;

 no_locks:
 	nlmsvc_release_host(host);
 	if (error)
 		return error;
 	return nlm_lck_denied_nolocks;
 }

 /*
  * NULL: Test for presence of service
  */
 static __be32
 nlmsvc_proc_null(struct svc_rqst *rqstp)
 {
 	dprintk("lockd: NULL          called\n");
 	return rpc_success;
 }

 /*
  * TEST: Check for conflicting lock
  */
 static __be32
 __nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_host	*host;
 	struct nlm_file	*file;
 	__be32 rc = rpc_success;

 	dprintk("lockd: TEST          called\n");
 	resp->cookie = argp->cookie;

 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

 	/* Now check for conflicting locks */
 	resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
 	if (resp->status == nlm_drop_reply)
 		rc = rpc_drop_reply;
 	else
 		dprintk("lockd: TEST          status %d vers %d\n",
 			ntohl(resp->status), rqstp->rq_vers);

 	nlmsvc_release_lockowner(&argp->lock);
 	nlmsvc_release_host(host);
 	nlm_release_file(file);
 	return rc;
 }

 static __be32
 nlmsvc_proc_test(struct svc_rqst *rqstp)
 {
 	return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
 }

 static __be32
 __nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_host	*host;
 	struct nlm_file	*file;
 	__be32 rc = rpc_success;

 	dprintk("lockd: LOCK          called\n");

 	resp->cookie = argp->cookie;

 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

 #if 0
 	/* If supplied state doesn't match current state, we assume it's
 	 * an old request that time-warped somehow. Any error return would
 	 * do in this case because it's irrelevant anyway.
 	 *
 	 * NB: We don't retrieve the remote host's state yet.
 	 */
 	if (host->h_nsmstate && host->h_nsmstate != argp->state) {
 		resp->status = nlm_lck_denied_nolocks;
 	} else
 #endif

 	/* Now try to lock the file */
 	resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
 					       argp->block, &argp->cookie,
 					       argp->reclaim));
 	if (resp->status == nlm_drop_reply)
 		rc = rpc_drop_reply;
 	else
 		dprintk("lockd: LOCK         status %d\n", ntohl(resp->status));

 	nlmsvc_release_lockowner(&argp->lock);
 	nlmsvc_release_host(host);
 	nlm_release_file(file);
 	return rc;
 }

 static __be32
 nlmsvc_proc_lock(struct svc_rqst *rqstp)
 {
 	return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
 }

 static __be32
 __nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_host	*host;
 	struct nlm_file	*file;
 	struct net *net = SVC_NET(rqstp);

 	dprintk("lockd: CANCEL        called\n");

 	resp->cookie = argp->cookie;

 	/* Don't accept requests during grace period */
 	if (locks_in_grace(net)) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}

 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

 	/* Try to cancel request. */
 	resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));

 	dprintk("lockd: CANCEL        status %d\n", ntohl(resp->status));
 	nlmsvc_release_lockowner(&argp->lock);
 	nlmsvc_release_host(host);
 	nlm_release_file(file);
 	return rpc_success;
 }

 static __be32
 nlmsvc_proc_cancel(struct svc_rqst *rqstp)
 {
 	return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
 }

 /*
  * UNLOCK: release a lock
  */
 static __be32
 __nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_host	*host;
 	struct nlm_file	*file;
 	struct net *net = SVC_NET(rqstp);

 	dprintk("lockd: UNLOCK        called\n");

 	resp->cookie = argp->cookie;

 	/* Don't accept new lock requests during grace period */
 	if (locks_in_grace(net)) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}

 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

 	/* Now try to remove the lock */
 	resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));

 	dprintk("lockd: UNLOCK        status %d\n", ntohl(resp->status));
 	nlmsvc_release_lockowner(&argp->lock);
 	nlmsvc_release_host(host);
 	nlm_release_file(file);
 	return rpc_success;
 }

 static __be32
 nlmsvc_proc_unlock(struct svc_rqst *rqstp)
 {
 	return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
 }

 /*
  * GRANTED: A server calls us to tell that a process' lock request
  * was granted
  */
 static __be32
 __nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;

 	resp->cookie = argp->cookie;

 	dprintk("lockd: GRANTED       called\n");
 	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }

 static __be32
 nlmsvc_proc_granted(struct svc_rqst *rqstp)
 {
 	return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
 }

 /*
  * This is the generic lockd callback for async RPC calls
  */
 static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
 {
 	dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
 			-task->tk_status);
 }

 void nlmsvc_release_call(struct nlm_rqst *call)
 {
 	if (!refcount_dec_and_test(&call->a_count))
 		return;
 	nlmsvc_release_host(call->a_host);
 	kfree(call);
 }

 static void nlmsvc_callback_release(void *data)
 {
 	nlmsvc_release_call(data);
 }

 static const struct rpc_call_ops nlmsvc_callback_ops = {
 	.rpc_call_done = nlmsvc_callback_exit,
 	.rpc_release = nlmsvc_callback_release,
 };

 /*
  * `Async' versions of the above service routines. They aren't really,
  * because we send the callback before the reply proper. I hope this
  * doesn't break any clients.
  */
 static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
 		__be32 (*func)(struct svc_rqst *, struct nlm_res *))
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_host	*host;
 	struct nlm_rqst	*call;
 	__be32 stat;

 	host = nlmsvc_lookup_host(rqstp,
 				  argp->lock.caller,
 				  argp->lock.len);
 	if (host == NULL)
 		return rpc_system_err;

 	call = nlm_alloc_call(host);
 	nlmsvc_release_host(host);
 	if (call == NULL)
 		return rpc_system_err;

 	stat = func(rqstp, &call->a_res);
 	if (stat != 0) {
 		nlmsvc_release_call(call);
 		return stat;
 	}

 	call->a_flags = RPC_TASK_ASYNC;
 	if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
 		return rpc_system_err;
 	return rpc_success;
 }

 static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
 {
 	dprintk("lockd: TEST_MSG      called\n");
 	return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
 }

 static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
 {
 	dprintk("lockd: LOCK_MSG      called\n");
 	return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
 }

 static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
 {
 	dprintk("lockd: CANCEL_MSG    called\n");
 	return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
 }

 static __be32
 nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
 {
 	dprintk("lockd: UNLOCK_MSG    called\n");
 	return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
 }

 static __be32
 nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
 {
 	dprintk("lockd: GRANTED_MSG   called\n");
 	return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
 }

 /*
  * SHARE: create a DOS share or alter existing share.
  */
 static __be32
 nlmsvc_proc_share(struct svc_rqst *rqstp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_res *resp = rqstp->rq_resp;
 	struct nlm_host	*host;
 	struct nlm_file	*file;

 	dprintk("lockd: SHARE         called\n");

 	resp->cookie = argp->cookie;

 	/* Don't accept new lock requests during grace period */
 	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}

 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

 	/* Now try to create the share */
 	resp->status = cast_status(nlmsvc_share_file(host, file, argp));

 	dprintk("lockd: SHARE         status %d\n", ntohl(resp->status));
 	nlmsvc_release_lockowner(&argp->lock);
 	nlmsvc_release_host(host);
 	nlm_release_file(file);
 	return rpc_success;
 }

 /*
  * UNSHARE: Release a DOS share.
  */
 static __be32
 nlmsvc_proc_unshare(struct svc_rqst *rqstp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_res *resp = rqstp->rq_resp;
 	struct nlm_host	*host;
 	struct nlm_file	*file;

 	dprintk("lockd: UNSHARE       called\n");

 	resp->cookie = argp->cookie;

 	/* Don't accept requests during grace period */
 	if (locks_in_grace(SVC_NET(rqstp))) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}

 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

 	/* Now try to unshare the file */
 	resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));

 	dprintk("lockd: UNSHARE       status %d\n", ntohl(resp->status));
 	nlmsvc_release_lockowner(&argp->lock);
 	nlmsvc_release_host(host);
 	nlm_release_file(file);
 	return rpc_success;
 }

 /*
  * NM_LOCK: Create an unmonitored lock
  */
 static __be32
 nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;

 	dprintk("lockd: NM_LOCK       called\n");

 	argp->monitor = 0;		/* just clean the monitor flag */
 	return nlmsvc_proc_lock(rqstp);
 }

 /*
  * FREE_ALL: Release all locks and shares held by client
  */
 static __be32
 nlmsvc_proc_free_all(struct svc_rqst *rqstp)
 {
 	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_host	*host;

 	/* Obtain client */
 	if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
 		return rpc_success;

 	nlmsvc_free_host_resources(host);
 	nlmsvc_release_host(host);
 	return rpc_success;
 }

 /*
  * SM_NOTIFY: private callback from statd (not part of official NLM proto)
  */
 static __be32
 nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
 {
 	struct nlm_reboot *argp = rqstp->rq_argp;

 	dprintk("lockd: SM_NOTIFY     called\n");

 	if (!nlm_privileged_requester(rqstp)) {
 		char buf[RPC_MAX_ADDRBUFLEN];
 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
 				svc_print_addr(rqstp, buf, sizeof(buf)));
 		return rpc_system_err;
 	}

 	nlm_host_rebooted(SVC_NET(rqstp), argp);
 	return rpc_success;
 }

 /*
  * client sent a GRANTED_RES, let's remove the associated block
  */
 static __be32
 nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
 {
 	struct nlm_res *argp = rqstp->rq_argp;

 	if (!nlmsvc_ops)
 		return rpc_success;

 	dprintk("lockd: GRANTED_RES   called\n");

 	nlmsvc_grant_reply(&argp->cookie, argp->status);
 	return rpc_success;
 }

 static __be32
 nlmsvc_proc_unused(struct svc_rqst *rqstp)
 {
 	return rpc_proc_unavail;
 }

 /*
  * NLM Server procedures.
  */

 struct nlm_void			{ int dummy; };

 #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */
 #define	St	1				/* status */
 #define	No	(1+1024/4)			/* Net Obj */
 #define	Rg	2				/* range - offset + size */

 const struct svc_procedure nlmsvc_procedures[24] = {
 	[NLMPROC_NULL] = {
 		.pc_func = nlmsvc_proc_null,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_void),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "NULL",
 	},
 	[NLMPROC_TEST] = {
 		.pc_func = nlmsvc_proc_test,
 		.pc_decode = nlmsvc_decode_testargs,
 		.pc_encode = nlmsvc_encode_testres,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St+2+No+Rg,
 		.pc_name = "TEST",
 	},
 	[NLMPROC_LOCK] = {
 		.pc_func = nlmsvc_proc_lock,
 		.pc_decode = nlmsvc_decode_lockargs,
 		.pc_encode = nlmsvc_encode_res,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St,
 		.pc_name = "LOCK",
 	},
 	[NLMPROC_CANCEL] = {
 		.pc_func = nlmsvc_proc_cancel,
 		.pc_decode = nlmsvc_decode_cancargs,
 		.pc_encode = nlmsvc_encode_res,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St,
 		.pc_name = "CANCEL",
 	},
 	[NLMPROC_UNLOCK] = {
 		.pc_func = nlmsvc_proc_unlock,
 		.pc_decode = nlmsvc_decode_unlockargs,
 		.pc_encode = nlmsvc_encode_res,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St,
 		.pc_name = "UNLOCK",
 	},
 	[NLMPROC_GRANTED] = {
 		.pc_func = nlmsvc_proc_granted,
 		.pc_decode = nlmsvc_decode_testargs,
 		.pc_encode = nlmsvc_encode_res,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St,
 		.pc_name = "GRANTED",
 	},
 	[NLMPROC_TEST_MSG] = {
 		.pc_func = nlmsvc_proc_test_msg,
 		.pc_decode = nlmsvc_decode_testargs,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "TEST_MSG",
 	},
 	[NLMPROC_LOCK_MSG] = {
 		.pc_func = nlmsvc_proc_lock_msg,
 		.pc_decode = nlmsvc_decode_lockargs,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "LOCK_MSG",
 	},
 	[NLMPROC_CANCEL_MSG] = {
 		.pc_func = nlmsvc_proc_cancel_msg,
 		.pc_decode = nlmsvc_decode_cancargs,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "CANCEL_MSG",
 	},
 	[NLMPROC_UNLOCK_MSG] = {
 		.pc_func = nlmsvc_proc_unlock_msg,
 		.pc_decode = nlmsvc_decode_unlockargs,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "UNLOCK_MSG",
 	},
 	[NLMPROC_GRANTED_MSG] = {
 		.pc_func = nlmsvc_proc_granted_msg,
 		.pc_decode = nlmsvc_decode_testargs,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "GRANTED_MSG",
 	},
 	[NLMPROC_TEST_RES] = {
 		.pc_func = nlmsvc_proc_null,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_res),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "TEST_RES",
 	},
 	[NLMPROC_LOCK_RES] = {
 		.pc_func = nlmsvc_proc_null,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_res),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "LOCK_RES",
 	},
 	[NLMPROC_CANCEL_RES] = {
 		.pc_func = nlmsvc_proc_null,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_res),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "CANCEL_RES",
 	},
 	[NLMPROC_UNLOCK_RES] = {
 		.pc_func = nlmsvc_proc_null,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_res),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "UNLOCK_RES",
 	},
 	[NLMPROC_GRANTED_RES] = {
 		.pc_func = nlmsvc_proc_granted_res,
 		.pc_decode = nlmsvc_decode_res,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_res),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "GRANTED_RES",
 	},
 	[NLMPROC_NSM_NOTIFY] = {
 		.pc_func = nlmsvc_proc_sm_notify,
 		.pc_decode = nlmsvc_decode_reboot,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_reboot),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "SM_NOTIFY",
 	},
 	[17] = {
 		.pc_func = nlmsvc_proc_unused,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_void),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "UNUSED",
 	},
 	[18] = {
 		.pc_func = nlmsvc_proc_unused,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_void),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "UNUSED",
 	},
 	[19] = {
 		.pc_func = nlmsvc_proc_unused,
 		.pc_decode = nlmsvc_decode_void,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_void),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = St,
 		.pc_name = "UNUSED",
 	},
 	[NLMPROC_SHARE] = {
 		.pc_func = nlmsvc_proc_share,
 		.pc_decode = nlmsvc_decode_shareargs,
 		.pc_encode = nlmsvc_encode_shareres,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St+1,
 		.pc_name = "SHARE",
 	},
 	[NLMPROC_UNSHARE] = {
 		.pc_func = nlmsvc_proc_unshare,
 		.pc_decode = nlmsvc_decode_shareargs,
 		.pc_encode = nlmsvc_encode_shareres,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St+1,
 		.pc_name = "UNSHARE",
 	},
 	[NLMPROC_NM_LOCK] = {
 		.pc_func = nlmsvc_proc_nm_lock,
 		.pc_decode = nlmsvc_decode_lockargs,
 		.pc_encode = nlmsvc_encode_res,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_res),
 		.pc_xdrressize = Ck+St,
 		.pc_name = "NM_LOCK",
 	},
 	[NLMPROC_FREE_ALL] = {
 		.pc_func = nlmsvc_proc_free_all,
 		.pc_decode = nlmsvc_decode_notify,
 		.pc_encode = nlmsvc_encode_void,
 		.pc_argsize = sizeof(struct nlm_args),
 		.pc_ressize = sizeof(struct nlm_void),
 		.pc_xdrressize = 0,
 		.pc_name = "FREE_ALL",
 	},
 };
	// SPDX-License-Identifier: GPL-2.0
	/*
	* linux/fs/lockd/svcproc.c
	*
	* Lockd server procedures. We don't implement the NLM_*_RES
	* procedures because we don't use the async procedures.
	*
	* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
	*/

	#include <linux/types.h>
	#include <linux/time.h>
	#include <linux/lockd/lockd.h>
	#include <linux/lockd/share.h>
	#include <linux/sunrpc/svc_xprt.h>

	#define NLMDBG_FACILITY NLMDBG_CLIENT

	#ifdef CONFIG_LOCKD_V4
	static __be32
	cast_to_nlm(__be32 status, u32 vers)
	{
	/* Note: status is assumed to be in network byte order !!! */
	if (vers != 4){
	switch (status) {
	case nlm_granted:
	case nlm_lck_denied:
	case nlm_lck_denied_nolocks:
	case nlm_lck_blocked:
	case nlm_lck_denied_grace_period:
	case nlm_drop_reply:
	break;
	case nlm4_deadlock:
	status = nlm_lck_denied;
	break;
	default:
	status = nlm_lck_denied_nolocks;
	}
	}

	return (status);
	}
	#define cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
	#else
	#define cast_status(status) (status)
	#endif

	/*
	* Obtain client and file from arguments
	*/
	static __be32
	nlmsvc_retrieve_args(struct svc_rqst rqstp, struct nlm_args argp,
	struct nlm_host hostp, struct nlm_file filp)
	{
	struct nlm_host *host = NULL;
	struct nlm_file *file = NULL;
	struct nlm_lock *lock = &argp->lock;
	__be32 error = 0;

	/* nfsd callbacks must have been installed for this procedure */
	if (!nlmsvc_ops)
	return nlm_lck_denied_nolocks;

	/* Obtain host handle */
	if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
	\|\| (argp->monitor && nsm_monitor(host) < 0))
	goto no_locks;
	*hostp = host;

	/* Obtain file pointer. Not used by FREE_ALL call. */
	if (filp != NULL) {
	error = cast_status(nlm_lookup_file(rqstp, &file, &lock->fh));
	if (error != 0)
	goto no_locks;
	*filp = file;

	/* Set up the missing parts of the file_lock structure */
	lock->fl.fl_file = file->f_file;
	lock->fl.fl_pid = current->tgid;
	lock->fl.fl_lmops = &nlmsvc_lock_operations;
	nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
	if (!lock->fl.fl_owner) {
	/* lockowner allocation has failed */
	nlmsvc_release_host(host);
	return nlm_lck_denied_nolocks;
	}
	}

	return 0;

	no_locks:
	nlmsvc_release_host(host);
	if (error)
	return error;
	return nlm_lck_denied_nolocks;
	}

	/*
	* NULL: Test for presence of service
	*/
	static __be32
	nlmsvc_proc_null(struct svc_rqst *rqstp)
	{
	dprintk("lockd: NULL called\n");
	return rpc_success;
	}

	/*
	* TEST: Check for conflicting lock
	*/
	static __be32
	__nlmsvc_proc_test(struct svc_rqst rqstp, struct nlm_res resp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_host *host;
	struct nlm_file *file;
	__be32 rc = rpc_success;

	dprintk("lockd: TEST called\n");
	resp->cookie = argp->cookie;

	/* Obtain client and file */
	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
	return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

	/* Now check for conflicting locks */
	resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
	if (resp->status == nlm_drop_reply)
	rc = rpc_drop_reply;
	else
	dprintk("lockd: TEST status %d vers %d\n",
	ntohl(resp->status), rqstp->rq_vers);

	nlmsvc_release_lockowner(&argp->lock);
	nlmsvc_release_host(host);
	nlm_release_file(file);
	return rc;
	}

	static __be32
	nlmsvc_proc_test(struct svc_rqst *rqstp)
	{
	return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
	}

	static __be32
	__nlmsvc_proc_lock(struct svc_rqst rqstp, struct nlm_res resp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_host *host;
	struct nlm_file *file;
	__be32 rc = rpc_success;

	dprintk("lockd: LOCK called\n");

	resp->cookie = argp->cookie;

	/* Obtain client and file */
	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
	return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

	#if 0
	/* If supplied state doesn't match current state, we assume it's
	* an old request that time-warped somehow. Any error return would
	* do in this case because it's irrelevant anyway.
	*
	* NB: We don't retrieve the remote host's state yet.
	*/
	if (host->h_nsmstate && host->h_nsmstate != argp->state) {
	resp->status = nlm_lck_denied_nolocks;
	} else
	#endif

	/* Now try to lock the file */
	resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
	argp->block, &argp->cookie,
	argp->reclaim));
	if (resp->status == nlm_drop_reply)
	rc = rpc_drop_reply;
	else
	dprintk("lockd: LOCK status %d\n", ntohl(resp->status));

	nlmsvc_release_lockowner(&argp->lock);
	nlmsvc_release_host(host);
	nlm_release_file(file);
	return rc;
	}

	static __be32
	nlmsvc_proc_lock(struct svc_rqst *rqstp)
	{
	return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
	}

	static __be32
	__nlmsvc_proc_cancel(struct svc_rqst rqstp, struct nlm_res resp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_host *host;
	struct nlm_file *file;
	struct net *net = SVC_NET(rqstp);

	dprintk("lockd: CANCEL called\n");

	resp->cookie = argp->cookie;

	/* Don't accept requests during grace period */
	if (locks_in_grace(net)) {
	resp->status = nlm_lck_denied_grace_period;
	return rpc_success;
	}

	/* Obtain client and file */
	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
	return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

	/* Try to cancel request. */
	resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));

	dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
	nlmsvc_release_lockowner(&argp->lock);
	nlmsvc_release_host(host);
	nlm_release_file(file);
	return rpc_success;
	}

	static __be32
	nlmsvc_proc_cancel(struct svc_rqst *rqstp)
	{
	return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
	}

	/*
	* UNLOCK: release a lock
	*/
	static __be32
	__nlmsvc_proc_unlock(struct svc_rqst rqstp, struct nlm_res resp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_host *host;
	struct nlm_file *file;
	struct net *net = SVC_NET(rqstp);

	dprintk("lockd: UNLOCK called\n");

	resp->cookie = argp->cookie;

	/* Don't accept new lock requests during grace period */
	if (locks_in_grace(net)) {
	resp->status = nlm_lck_denied_grace_period;
	return rpc_success;
	}

	/* Obtain client and file */
	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
	return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

	/* Now try to remove the lock */
	resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));

	dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
	nlmsvc_release_lockowner(&argp->lock);
	nlmsvc_release_host(host);
	nlm_release_file(file);
	return rpc_success;
	}

	static __be32
	nlmsvc_proc_unlock(struct svc_rqst *rqstp)
	{
	return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
	}

	/*
	* GRANTED: A server calls us to tell that a process' lock request
	* was granted
	*/
	static __be32
	__nlmsvc_proc_granted(struct svc_rqst rqstp, struct nlm_res resp)
	{
	struct nlm_args *argp = rqstp->rq_argp;

	resp->cookie = argp->cookie;

	dprintk("lockd: GRANTED called\n");
	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
	dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
	return rpc_success;
	}

	static __be32
	nlmsvc_proc_granted(struct svc_rqst *rqstp)
	{
	return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
	}

	/*
	* This is the generic lockd callback for async RPC calls
	*/
	static void nlmsvc_callback_exit(struct rpc_task task, void data)
	{
	dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
	-task->tk_status);
	}

	void nlmsvc_release_call(struct nlm_rqst *call)
	{
	if (!refcount_dec_and_test(&call->a_count))
	return;
	nlmsvc_release_host(call->a_host);
	kfree(call);
	}

	static void nlmsvc_callback_release(void *data)
	{
	nlmsvc_release_call(data);
	}

	static const struct rpc_call_ops nlmsvc_callback_ops = {
	.rpc_call_done = nlmsvc_callback_exit,
	.rpc_release = nlmsvc_callback_release,
	};

	/*
	* `Async' versions of the above service routines. They aren't really,
	* because we send the callback before the reply proper. I hope this
	* doesn't break any clients.
	*/
	static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
	__be32 (func)(struct svc_rqst , struct nlm_res *))
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_host *host;
	struct nlm_rqst *call;
	__be32 stat;

	host = nlmsvc_lookup_host(rqstp,
	argp->lock.caller,
	argp->lock.len);
	if (host == NULL)
	return rpc_system_err;

	call = nlm_alloc_call(host);
	nlmsvc_release_host(host);
	if (call == NULL)
	return rpc_system_err;

	stat = func(rqstp, &call->a_res);
	if (stat != 0) {
	nlmsvc_release_call(call);
	return stat;
	}

	call->a_flags = RPC_TASK_ASYNC;
	if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
	return rpc_system_err;
	return rpc_success;
	}

	static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
	{
	dprintk("lockd: TEST_MSG called\n");
	return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
	}

	static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
	{
	dprintk("lockd: LOCK_MSG called\n");
	return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
	}

	static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
	{
	dprintk("lockd: CANCEL_MSG called\n");
	return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
	}

	static __be32
	nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
	{
	dprintk("lockd: UNLOCK_MSG called\n");
	return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
	}

	static __be32
	nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
	{
	dprintk("lockd: GRANTED_MSG called\n");
	return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
	}

	/*
	* SHARE: create a DOS share or alter existing share.
	*/
	static __be32
	nlmsvc_proc_share(struct svc_rqst *rqstp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_res *resp = rqstp->rq_resp;
	struct nlm_host *host;
	struct nlm_file *file;

	dprintk("lockd: SHARE called\n");

	resp->cookie = argp->cookie;

	/* Don't accept new lock requests during grace period */
	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
	resp->status = nlm_lck_denied_grace_period;
	return rpc_success;
	}

	/* Obtain client and file */
	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
	return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

	/* Now try to create the share */
	resp->status = cast_status(nlmsvc_share_file(host, file, argp));

	dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
	nlmsvc_release_lockowner(&argp->lock);
	nlmsvc_release_host(host);
	nlm_release_file(file);
	return rpc_success;
	}

	/*
	* UNSHARE: Release a DOS share.
	*/
	static __be32
	nlmsvc_proc_unshare(struct svc_rqst *rqstp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_res *resp = rqstp->rq_resp;
	struct nlm_host *host;
	struct nlm_file *file;

	dprintk("lockd: UNSHARE called\n");

	resp->cookie = argp->cookie;

	/* Don't accept requests during grace period */
	if (locks_in_grace(SVC_NET(rqstp))) {
	resp->status = nlm_lck_denied_grace_period;
	return rpc_success;
	}

	/* Obtain client and file */
	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
	return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;

	/* Now try to unshare the file */
	resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));

	dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
	nlmsvc_release_lockowner(&argp->lock);
	nlmsvc_release_host(host);
	nlm_release_file(file);
	return rpc_success;
	}

	/*
	* NM_LOCK: Create an unmonitored lock
	*/
	static __be32
	nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
	{
	struct nlm_args *argp = rqstp->rq_argp;

	dprintk("lockd: NM_LOCK called\n");

	argp->monitor = 0; /* just clean the monitor flag */
	return nlmsvc_proc_lock(rqstp);
	}

	/*
	* FREE_ALL: Release all locks and shares held by client
	*/
	static __be32
	nlmsvc_proc_free_all(struct svc_rqst *rqstp)
	{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_host *host;

	/* Obtain client */
	if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
	return rpc_success;

	nlmsvc_free_host_resources(host);
	nlmsvc_release_host(host);
	return rpc_success;
	}

	/*
	* SM_NOTIFY: private callback from statd (not part of official NLM proto)
	*/
	static __be32
	nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
	{
	struct nlm_reboot *argp = rqstp->rq_argp;

	dprintk("lockd: SM_NOTIFY called\n");

	if (!nlm_privileged_requester(rqstp)) {
	char buf[RPC_MAX_ADDRBUFLEN];
	printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
	svc_print_addr(rqstp, buf, sizeof(buf)));
	return rpc_system_err;
	}

	nlm_host_rebooted(SVC_NET(rqstp), argp);
	return rpc_success;
	}

	/*
	* client sent a GRANTED_RES, let's remove the associated block
	*/
	static __be32
	nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
	{
	struct nlm_res *argp = rqstp->rq_argp;

	if (!nlmsvc_ops)
	return rpc_success;

	dprintk("lockd: GRANTED_RES called\n");

	nlmsvc_grant_reply(&argp->cookie, argp->status);
	return rpc_success;
	}

	static __be32
	nlmsvc_proc_unused(struct svc_rqst *rqstp)
	{
	return rpc_proc_unavail;
	}

	/*
	* NLM Server procedures.
	*/

	struct nlm_void { int dummy; };

	#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
	#define St 1 /* status */
	#define No (1+1024/4) /* Net Obj */
	#define Rg 2 /* range - offset + size */

	const struct svc_procedure nlmsvc_procedures[24] = {
	[NLMPROC_NULL] = {
	.pc_func = nlmsvc_proc_null,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_void),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "NULL",
	},
	[NLMPROC_TEST] = {
	.pc_func = nlmsvc_proc_test,
	.pc_decode = nlmsvc_decode_testargs,
	.pc_encode = nlmsvc_encode_testres,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St+2+No+Rg,
	.pc_name = "TEST",
	},
	[NLMPROC_LOCK] = {
	.pc_func = nlmsvc_proc_lock,
	.pc_decode = nlmsvc_decode_lockargs,
	.pc_encode = nlmsvc_encode_res,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St,
	.pc_name = "LOCK",
	},
	[NLMPROC_CANCEL] = {
	.pc_func = nlmsvc_proc_cancel,
	.pc_decode = nlmsvc_decode_cancargs,
	.pc_encode = nlmsvc_encode_res,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St,
	.pc_name = "CANCEL",
	},
	[NLMPROC_UNLOCK] = {
	.pc_func = nlmsvc_proc_unlock,
	.pc_decode = nlmsvc_decode_unlockargs,
	.pc_encode = nlmsvc_encode_res,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St,
	.pc_name = "UNLOCK",
	},
	[NLMPROC_GRANTED] = {
	.pc_func = nlmsvc_proc_granted,
	.pc_decode = nlmsvc_decode_testargs,
	.pc_encode = nlmsvc_encode_res,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St,
	.pc_name = "GRANTED",
	},
	[NLMPROC_TEST_MSG] = {
	.pc_func = nlmsvc_proc_test_msg,
	.pc_decode = nlmsvc_decode_testargs,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "TEST_MSG",
	},
	[NLMPROC_LOCK_MSG] = {
	.pc_func = nlmsvc_proc_lock_msg,
	.pc_decode = nlmsvc_decode_lockargs,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "LOCK_MSG",
	},
	[NLMPROC_CANCEL_MSG] = {
	.pc_func = nlmsvc_proc_cancel_msg,
	.pc_decode = nlmsvc_decode_cancargs,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "CANCEL_MSG",
	},
	[NLMPROC_UNLOCK_MSG] = {
	.pc_func = nlmsvc_proc_unlock_msg,
	.pc_decode = nlmsvc_decode_unlockargs,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "UNLOCK_MSG",
	},
	[NLMPROC_GRANTED_MSG] = {
	.pc_func = nlmsvc_proc_granted_msg,
	.pc_decode = nlmsvc_decode_testargs,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "GRANTED_MSG",
	},
	[NLMPROC_TEST_RES] = {
	.pc_func = nlmsvc_proc_null,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_res),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "TEST_RES",
	},
	[NLMPROC_LOCK_RES] = {
	.pc_func = nlmsvc_proc_null,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_res),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "LOCK_RES",
	},
	[NLMPROC_CANCEL_RES] = {
	.pc_func = nlmsvc_proc_null,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_res),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "CANCEL_RES",
	},
	[NLMPROC_UNLOCK_RES] = {
	.pc_func = nlmsvc_proc_null,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_res),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "UNLOCK_RES",
	},
	[NLMPROC_GRANTED_RES] = {
	.pc_func = nlmsvc_proc_granted_res,
	.pc_decode = nlmsvc_decode_res,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_res),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "GRANTED_RES",
	},
	[NLMPROC_NSM_NOTIFY] = {
	.pc_func = nlmsvc_proc_sm_notify,
	.pc_decode = nlmsvc_decode_reboot,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_reboot),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "SM_NOTIFY",
	},
	[17] = {
	.pc_func = nlmsvc_proc_unused,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_void),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "UNUSED",
	},
	[18] = {
	.pc_func = nlmsvc_proc_unused,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_void),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "UNUSED",
	},
	[19] = {
	.pc_func = nlmsvc_proc_unused,
	.pc_decode = nlmsvc_decode_void,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_void),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = St,
	.pc_name = "UNUSED",
	},
	[NLMPROC_SHARE] = {
	.pc_func = nlmsvc_proc_share,
	.pc_decode = nlmsvc_decode_shareargs,
	.pc_encode = nlmsvc_encode_shareres,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St+1,
	.pc_name = "SHARE",
	},
	[NLMPROC_UNSHARE] = {
	.pc_func = nlmsvc_proc_unshare,
	.pc_decode = nlmsvc_decode_shareargs,
	.pc_encode = nlmsvc_encode_shareres,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St+1,
	.pc_name = "UNSHARE",
	},
	[NLMPROC_NM_LOCK] = {
	.pc_func = nlmsvc_proc_nm_lock,
	.pc_decode = nlmsvc_decode_lockargs,
	.pc_encode = nlmsvc_encode_res,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_res),
	.pc_xdrressize = Ck+St,
	.pc_name = "NM_LOCK",
	},
	[NLMPROC_FREE_ALL] = {
	.pc_func = nlmsvc_proc_free_all,
	.pc_decode = nlmsvc_decode_notify,
	.pc_encode = nlmsvc_encode_void,
	.pc_argsize = sizeof(struct nlm_args),
	.pc_ressize = sizeof(struct nlm_void),
	.pc_xdrressize = 0,
	.pc_name = "FREE_ALL",
	},
	};