[linux.git] / fs / lockd / xdr4.c

// SPDX-License-Identifier: GPL-2.0
/*
 * linux/fs/lockd/xdr4.c
 *
 * XDR support for lockd and the lock client.
 *
 * Copyright (C) 1995, 1996 Olaf Kirch <[email protected]>
 * Copyright (C) 1999, Trond Myklebust <[email protected]>
 */

#include <linux/types.h>
#include <linux/sched.h>
#include <linux/nfs.h>

#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/stats.h>
#include <linux/lockd/lockd.h>

#define NLMDBG_FACILITY		NLMDBG_XDR

static inline loff_t
s64_to_loff_t(__s64 offset)
{
	return (loff_t)offset;
}


static inline s64
loff_t_to_s64(loff_t offset)
{
	s64 res;
	if (offset > NLM4_OFFSET_MAX)
		res = NLM4_OFFSET_MAX;
	else if (offset < -NLM4_OFFSET_MAX)
		res = -NLM4_OFFSET_MAX;
	else
		res = offset;
	return res;
}

/*
 * XDR functions for basic NLM types
 */
static __be32 *
nlm4_decode_cookie(__be32 *p, struct nlm_cookie *c)
{
	unsigned int	len;

	len = ntohl(*p++);
	
	if(len==0)
	{
		c->len=4;
		memset(c->data, 0, 4);	/* hockeypux brain damage */
	}
	else if(len<=NLM_MAXCOOKIELEN)
	{
		c->len=len;
		memcpy(c->data, p, len);
		p+=XDR_QUADLEN(len);
	}
	else 
	{
		dprintk("lockd: bad cookie size %d (only cookies under "
			"%d bytes are supported.)\n",
				len, NLM_MAXCOOKIELEN);
		return NULL;
	}
	return p;
}

static __be32 *
nlm4_encode_cookie(__be32 *p, struct nlm_cookie *c)
{
	*p++ = htonl(c->len);
	memcpy(p, c->data, c->len);
	p+=XDR_QUADLEN(c->len);
	return p;
}

static __be32 *
nlm4_decode_fh(__be32 *p, struct nfs_fh *f)
{
	memset(f->data, 0, sizeof(f->data));
	f->size = ntohl(*p++);
	if (f->size > NFS_MAXFHSIZE) {
		dprintk("lockd: bad fhandle size %d (should be <=%d)\n",
			f->size, NFS_MAXFHSIZE);
		return NULL;
	}
      	memcpy(f->data, p, f->size);
	return p + XDR_QUADLEN(f->size);
}

/*
 * Encode and decode owner handle
 */
static __be32 *
nlm4_decode_oh(__be32 *p, struct xdr_netobj *oh)
{
	return xdr_decode_netobj(p, oh);
}

static __be32 *
nlm4_decode_lock(__be32 *p, struct nlm_lock *lock)
{
	struct file_lock	*fl = &lock->fl;
	__u64			len, start;
	__s64			end;

	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
					    &lock->len, NLM_MAXSTRLEN))
	 || !(p = nlm4_decode_fh(p, &lock->fh))
	 || !(p = nlm4_decode_oh(p, &lock->oh)))
		return NULL;
	lock->svid  = ntohl(*p++);

	locks_init_lock(fl);
	fl->fl_owner = current->files;
	fl->fl_pid   = current->tgid;
	fl->fl_flags = FL_POSIX;
	fl->fl_type  = F_RDLCK;		/* as good as anything else */
	p = xdr_decode_hyper(p, &start);
	p = xdr_decode_hyper(p, &len);
	end = start + len - 1;

	fl->fl_start = s64_to_loff_t(start);

	if (len == 0 || end < 0)
		fl->fl_end = OFFSET_MAX;
	else
		fl->fl_end = s64_to_loff_t(end);
	return p;
}

/*
 * Encode result of a TEST/TEST_MSG call
 */
static __be32 *
nlm4_encode_testres(__be32 *p, struct nlm_res *resp)
{
	s64		start, len;

	dprintk("xdr: before encode_testres (p %p resp %p)\n", p, resp);
	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
		return NULL;
	*p++ = resp->status;

	if (resp->status == nlm_lck_denied) {
		struct file_lock	*fl = &resp->lock.fl;

		*p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one;
		*p++ = htonl(resp->lock.svid);

		/* Encode owner handle. */
		if (!(p = xdr_encode_netobj(p, &resp->lock.oh)))
			return NULL;

		start = loff_t_to_s64(fl->fl_start);
		if (fl->fl_end == OFFSET_MAX)
			len = 0;
		else
			len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
		
		p = xdr_encode_hyper(p, start);
		p = xdr_encode_hyper(p, len);
		dprintk("xdr: encode_testres (status %u pid %d type %d start %Ld end %Ld)\n",
			resp->status, (int)resp->lock.svid, fl->fl_type,
			(long long)fl->fl_start,  (long long)fl->fl_end);
	}

	dprintk("xdr: after encode_testres (p %p resp %p)\n", p, resp);
	return p;
}


/*
 * First, the server side XDR functions
 */
int
nlm4svc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_args *argp = rqstp->rq_argp;
	u32	exclusive;

	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
		return 0;

	exclusive = ntohl(*p++);
	if (!(p = nlm4_decode_lock(p, &argp->lock)))
		return 0;
	if (exclusive)
		argp->lock.fl.fl_type = F_WRLCK;

	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_encode_testres(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_res *resp = rqstp->rq_resp;

	if (!(p = nlm4_encode_testres(p, resp)))
		return 0;
	return xdr_ressize_check(rqstp, p);
}

int
nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_args *argp = rqstp->rq_argp;
	u32	exclusive;

	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
		return 0;
	argp->block  = ntohl(*p++);
	exclusive    = ntohl(*p++);
	if (!(p = nlm4_decode_lock(p, &argp->lock)))
		return 0;
	if (exclusive)
		argp->lock.fl.fl_type = F_WRLCK;
	argp->reclaim = ntohl(*p++);
	argp->state   = ntohl(*p++);
	argp->monitor = 1;		/* monitor client by default */

	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_args *argp = rqstp->rq_argp;
	u32	exclusive;

	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
		return 0;
	argp->block = ntohl(*p++);
	exclusive = ntohl(*p++);
	if (!(p = nlm4_decode_lock(p, &argp->lock)))
		return 0;
	if (exclusive)
		argp->lock.fl.fl_type = F_WRLCK;
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_args *argp = rqstp->rq_argp;

	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
	 || !(p = nlm4_decode_lock(p, &argp->lock)))
		return 0;
	argp->lock.fl.fl_type = F_UNLCK;
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_lock	*lock = &argp->lock;

	memset(lock, 0, sizeof(*lock));
	locks_init_lock(&lock->fl);
	lock->svid = ~(u32) 0;
	lock->fl.fl_pid = current->tgid;

	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
	 || !(p = xdr_decode_string_inplace(p, &lock->caller,
					    &lock->len, NLM_MAXSTRLEN))
	 || !(p = nlm4_decode_fh(p, &lock->fh))
	 || !(p = nlm4_decode_oh(p, &lock->oh)))
		return 0;
	argp->fsm_mode = ntohl(*p++);
	argp->fsm_access = ntohl(*p++);
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_encode_shareres(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_res *resp = rqstp->rq_resp;

	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
		return 0;
	*p++ = resp->status;
	*p++ = xdr_zero;		/* sequence argument */
	return xdr_ressize_check(rqstp, p);
}

int
nlm4svc_encode_res(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_res *resp = rqstp->rq_resp;

	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
		return 0;
	*p++ = resp->status;
	return xdr_ressize_check(rqstp, p);
}

int
nlm4svc_decode_notify(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_args *argp = rqstp->rq_argp;
	struct nlm_lock	*lock = &argp->lock;

	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
					    &lock->len, NLM_MAXSTRLEN)))
		return 0;
	argp->state = ntohl(*p++);
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_reboot *argp = rqstp->rq_argp;

	if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
		return 0;
	argp->state = ntohl(*p++);
	memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
	p += XDR_QUADLEN(SM_PRIV_SIZE);
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p)
{
	struct nlm_res *resp = rqstp->rq_argp;

	if (!(p = nlm4_decode_cookie(p, &resp->cookie)))
		return 0;
	resp->status = *p++;
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_decode_void(struct svc_rqst *rqstp, __be32 *p)
{
	return xdr_argsize_check(rqstp, p);
}

int
nlm4svc_encode_void(struct svc_rqst *rqstp, __be32 *p)
{
	return xdr_ressize_check(rqstp, p);
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* linux/fs/lockd/xdr4.c
	4	*
	5	* XDR support for lockd and the lock client.
	6	*
	7	* Copyright (C) 1995, 1996 Olaf Kirch <[email protected]>
	8	* Copyright (C) 1999, Trond Myklebust <[email protected]>
	9	*/
	10
	11	#include <linux/types.h>
	12	#include <linux/sched.h>
1da177e4 LT	13	#include <linux/nfs.h>
	14
	15	#include <linux/sunrpc/xdr.h>
	16	#include <linux/sunrpc/clnt.h>
	17	#include <linux/sunrpc/svc.h>
	18	#include <linux/sunrpc/stats.h>
	19	#include <linux/lockd/lockd.h>
1da177e4 LT	20
	21	#define NLMDBG_FACILITY NLMDBG_XDR
	22
	23	static inline loff_t
	24	s64_to_loff_t(__s64 offset)
	25	{
	26	return (loff_t)offset;
	27	}
	28
	29
	30	static inline s64
	31	loff_t_to_s64(loff_t offset)
	32	{
	33	s64 res;
	34	if (offset > NLM4_OFFSET_MAX)
	35	res = NLM4_OFFSET_MAX;
	36	else if (offset < -NLM4_OFFSET_MAX)
	37	res = -NLM4_OFFSET_MAX;
	38	else
	39	res = offset;
	40	return res;
	41	}
	42
	43	/*
	44	* XDR functions for basic NLM types
	45	*/
52921e02 AV	46	static __be32 *
52921e02 AV	47	nlm4_decode_cookie(__be32 p, struct nlm_cookie c)
1da177e4 LT	48	{
	49	unsigned int len;
	50
	51	len = ntohl(*p++);
	52
	53	if(len==0)
	54	{
	55	c->len=4;
	56	memset(c->data, 0, 4); /* hockeypux brain damage */
	57	}
	58	else if(len<=NLM_MAXCOOKIELEN)
	59	{
	60	c->len=len;
	61	memcpy(c->data, p, len);
	62	p+=XDR_QUADLEN(len);
	63	}
	64	else
	65	{
e159a08b CL	66	dprintk("lockd: bad cookie size %d (only cookies under "
	67	"%d bytes are supported.)\n",
	68	len, NLM_MAXCOOKIELEN);
1da177e4 LT	69	return NULL;
	70	}
	71	return p;
	72	}
	73
52921e02 AV	74	static __be32 *
52921e02 AV	75	nlm4_encode_cookie(__be32 p, struct nlm_cookie c)
1da177e4 LT	76	{
	77	*p++ = htonl(c->len);
	78	memcpy(p, c->data, c->len);
	79	p+=XDR_QUADLEN(c->len);
	80	return p;
	81	}
	82
52921e02 AV	83	static __be32 *
52921e02 AV	84	nlm4_decode_fh(__be32 p, struct nfs_fh f)
1da177e4 LT	85	{
	86	memset(f->data, 0, sizeof(f->data));
	87	f->size = ntohl(*p++);
	88	if (f->size > NFS_MAXFHSIZE) {
e159a08b	89	dprintk("lockd: bad fhandle size %d (should be <=%d)\n",
1da177e4 LT	90	f->size, NFS_MAXFHSIZE);
	91	return NULL;
	92	}
	93	memcpy(f->data, p, f->size);
	94	return p + XDR_QUADLEN(f->size);
	95	}
	96
1da177e4 LT	97	/*
	98	* Encode and decode owner handle
	99	*/
52921e02 AV	100	static __be32 *
52921e02 AV	101	nlm4_decode_oh(__be32 p, struct xdr_netobj oh)
1da177e4 LT	102	{
	103	return xdr_decode_netobj(p, oh);
	104	}
	105
52921e02 AV	106	static __be32 *
52921e02 AV	107	nlm4_decode_lock(__be32 p, struct nlm_lock lock)
1da177e4 LT	108	{
1da177e4 LT	109	struct file_lock *fl = &lock->fl;
d48c5f41 TM	110	__u64 len, start;
d48c5f41 TM	111	__s64 end;
1da177e4 LT	112
	113	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
	114	&lock->len, NLM_MAXSTRLEN))
	115	\|\| !(p = nlm4_decode_fh(p, &lock->fh))
	116	\|\| !(p = nlm4_decode_oh(p, &lock->oh)))
	117	return NULL;
7bab377f	118	lock->svid = ntohl(*p++);
1da177e4 LT	119
	120	locks_init_lock(fl);
	121	fl->fl_owner = current->files;
b8eee0e9	122	fl->fl_pid = current->tgid;
1da177e4 LT	123	fl->fl_flags = FL_POSIX;
	124	fl->fl_type = F_RDLCK; /* as good as anything else */
	125	p = xdr_decode_hyper(p, &start);
	126	p = xdr_decode_hyper(p, &len);
	127	end = start + len - 1;
	128
	129	fl->fl_start = s64_to_loff_t(start);
	130
	131	if (len == 0 \|\| end < 0)
	132	fl->fl_end = OFFSET_MAX;
	133	else
	134	fl->fl_end = s64_to_loff_t(end);
	135	return p;
	136	}
	137
1da177e4 LT	138	/*
	139	* Encode result of a TEST/TEST_MSG call
	140	*/
52921e02 AV	141	static __be32 *
52921e02 AV	142	nlm4_encode_testres(__be32 p, struct nlm_res resp)
1da177e4 LT	143	{
	144	s64 start, len;
	145
	146	dprintk("xdr: before encode_testres (p %p resp %p)\n", p, resp);
	147	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
	148	return NULL;
	149	*p++ = resp->status;
	150
	151	if (resp->status == nlm_lck_denied) {
	152	struct file_lock *fl = &resp->lock.fl;
	153
	154	*p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one;
7bab377f	155	*p++ = htonl(resp->lock.svid);
1da177e4 LT	156
	157	/* Encode owner handle. */
	158	if (!(p = xdr_encode_netobj(p, &resp->lock.oh)))
	159	return NULL;
	160
	161	start = loff_t_to_s64(fl->fl_start);
	162	if (fl->fl_end == OFFSET_MAX)
	163	len = 0;
	164	else
	165	len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
	166
	167	p = xdr_encode_hyper(p, start);
	168	p = xdr_encode_hyper(p, len);
7bab377f TM	169	dprintk("xdr: encode_testres (status %u pid %d type %d start %Ld end %Ld)\n",
7bab377f TM	170	resp->status, (int)resp->lock.svid, fl->fl_type,
1da177e4 LT	171	(long long)fl->fl_start, (long long)fl->fl_end);
	172	}
	173
	174	dprintk("xdr: after encode_testres (p %p resp %p)\n", p, resp);
	175	return p;
	176	}
	177
	178
	179	/*
	180	* First, the server side XDR functions
	181	*/
	182	int
026fec7e	183	nlm4svc_decode_testargs(struct svc_rqst rqstp, __be32 p)
1da177e4	184	{
026fec7e	185	struct nlm_args *argp = rqstp->rq_argp;
1da177e4 LT	186	u32 exclusive;
	187
	188	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
	189	return 0;
	190
	191	exclusive = ntohl(*p++);
	192	if (!(p = nlm4_decode_lock(p, &argp->lock)))
	193	return 0;
	194	if (exclusive)
	195	argp->lock.fl.fl_type = F_WRLCK;
	196
	197	return xdr_argsize_check(rqstp, p);
	198	}
	199
	200	int
63f8de37	201	nlm4svc_encode_testres(struct svc_rqst rqstp, __be32 p)
1da177e4	202	{
63f8de37 CH	203	struct nlm_res *resp = rqstp->rq_resp;
63f8de37 CH	204
1da177e4 LT	205	if (!(p = nlm4_encode_testres(p, resp)))
	206	return 0;
	207	return xdr_ressize_check(rqstp, p);
	208	}
	209
	210	int
026fec7e	211	nlm4svc_decode_lockargs(struct svc_rqst rqstp, __be32 p)
1da177e4	212	{
026fec7e	213	struct nlm_args *argp = rqstp->rq_argp;
1da177e4 LT	214	u32 exclusive;
	215
	216	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
	217	return 0;
	218	argp->block = ntohl(*p++);
	219	exclusive = ntohl(*p++);
	220	if (!(p = nlm4_decode_lock(p, &argp->lock)))
	221	return 0;
	222	if (exclusive)
	223	argp->lock.fl.fl_type = F_WRLCK;
	224	argp->reclaim = ntohl(*p++);
	225	argp->state = ntohl(*p++);
	226	argp->monitor = 1; /* monitor client by default */
	227
	228	return xdr_argsize_check(rqstp, p);
	229	}
	230
	231	int
026fec7e	232	nlm4svc_decode_cancargs(struct svc_rqst rqstp, __be32 p)
1da177e4	233	{
026fec7e	234	struct nlm_args *argp = rqstp->rq_argp;
1da177e4 LT	235	u32 exclusive;
	236
	237	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
	238	return 0;
	239	argp->block = ntohl(*p++);
	240	exclusive = ntohl(*p++);
	241	if (!(p = nlm4_decode_lock(p, &argp->lock)))
	242	return 0;
	243	if (exclusive)
	244	argp->lock.fl.fl_type = F_WRLCK;
	245	return xdr_argsize_check(rqstp, p);
	246	}
	247
	248	int
026fec7e	249	nlm4svc_decode_unlockargs(struct svc_rqst rqstp, __be32 p)
1da177e4	250	{
026fec7e CH	251	struct nlm_args *argp = rqstp->rq_argp;
026fec7e CH	252
1da177e4 LT	253	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
	254	\|\| !(p = nlm4_decode_lock(p, &argp->lock)))
	255	return 0;
	256	argp->lock.fl.fl_type = F_UNLCK;
	257	return xdr_argsize_check(rqstp, p);
	258	}
	259
	260	int
026fec7e	261	nlm4svc_decode_shareargs(struct svc_rqst rqstp, __be32 p)
1da177e4	262	{
026fec7e	263	struct nlm_args *argp = rqstp->rq_argp;
1da177e4 LT	264	struct nlm_lock *lock = &argp->lock;
	265
	266	memset(lock, 0, sizeof(*lock));
	267	locks_init_lock(&lock->fl);
7bab377f	268	lock->svid = ~(u32) 0;
b8eee0e9	269	lock->fl.fl_pid = current->tgid;
1da177e4 LT	270
	271	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
	272	\|\| !(p = xdr_decode_string_inplace(p, &lock->caller,
	273	&lock->len, NLM_MAXSTRLEN))
	274	\|\| !(p = nlm4_decode_fh(p, &lock->fh))
	275	\|\| !(p = nlm4_decode_oh(p, &lock->oh)))
	276	return 0;
	277	argp->fsm_mode = ntohl(*p++);
	278	argp->fsm_access = ntohl(*p++);
	279	return xdr_argsize_check(rqstp, p);
	280	}
	281
	282	int
63f8de37	283	nlm4svc_encode_shareres(struct svc_rqst rqstp, __be32 p)
1da177e4	284	{
63f8de37 CH	285	struct nlm_res *resp = rqstp->rq_resp;
63f8de37 CH	286
1da177e4 LT	287	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
	288	return 0;
	289	*p++ = resp->status;
	290	p++ = xdr_zero; / sequence argument */
	291	return xdr_ressize_check(rqstp, p);
	292	}
	293
	294	int
63f8de37	295	nlm4svc_encode_res(struct svc_rqst rqstp, __be32 p)
1da177e4	296	{
63f8de37 CH	297	struct nlm_res *resp = rqstp->rq_resp;
63f8de37 CH	298
1da177e4 LT	299	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
	300	return 0;
	301	*p++ = resp->status;
	302	return xdr_ressize_check(rqstp, p);
	303	}
	304
	305	int
026fec7e	306	nlm4svc_decode_notify(struct svc_rqst rqstp, __be32 p)
1da177e4	307	{
026fec7e	308	struct nlm_args *argp = rqstp->rq_argp;
1da177e4 LT	309	struct nlm_lock *lock = &argp->lock;
	310
	311	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
	312	&lock->len, NLM_MAXSTRLEN)))
	313	return 0;
	314	argp->state = ntohl(*p++);
	315	return xdr_argsize_check(rqstp, p);
	316	}
	317
	318	int
026fec7e	319	nlm4svc_decode_reboot(struct svc_rqst rqstp, __be32 p)
1da177e4	320	{
026fec7e CH	321	struct nlm_reboot *argp = rqstp->rq_argp;
026fec7e CH	322
1da177e4 LT	323	if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
	324	return 0;
	325	argp->state = ntohl(*p++);
576df463 CL	326	memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
576df463 CL	327	p += XDR_QUADLEN(SM_PRIV_SIZE);
1da177e4 LT	328	return xdr_argsize_check(rqstp, p);
	329	}
	330
	331	int
026fec7e	332	nlm4svc_decode_res(struct svc_rqst rqstp, __be32 p)
1da177e4	333	{
026fec7e CH	334	struct nlm_res *resp = rqstp->rq_argp;
026fec7e CH	335
1da177e4 LT	336	if (!(p = nlm4_decode_cookie(p, &resp->cookie)))
1da177e4 LT	337	return 0;
e8c5c045	338	resp->status = *p++;
1da177e4 LT	339	return xdr_argsize_check(rqstp, p);
	340	}
	341
	342	int
026fec7e	343	nlm4svc_decode_void(struct svc_rqst rqstp, __be32 p)
1da177e4 LT	344	{
	345	return xdr_argsize_check(rqstp, p);
	346	}
	347
	348	int
63f8de37	349	nlm4svc_encode_void(struct svc_rqst rqstp, __be32 p)
1da177e4 LT	350	{
	351	return xdr_ressize_check(rqstp, p);
	352	}