[mirror_ubuntu-artful-kernel.git] / fs / lockd / xdr4.c

/*
 * linux/fs/lockd/xdr4.c
 *
 * XDR support for lockd and the lock client.
 *
 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
 * Copyright (C) 1999, Trond Myklebust <trond.myklebust@fys.uio.no>
 */

#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   = (pid_t)lock->svid;
	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 = (pid_t)lock->svid;

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