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1 /*
2  *  Server-side types for NFSv4.
3  *
4  *  Copyright (c) 2002 The Regents of the University of Michigan.
5  *  All rights reserved.
6  *
7  *  Kendrick Smith <kmsmith@umich.edu>
8  *  Andy Adamson   <andros@umich.edu>
9  *
10  *  Redistribution and use in source and binary forms, with or without
11  *  modification, are permitted provided that the following conditions
12  *  are met:
13  *
14  *  1. Redistributions of source code must retain the above copyright
15  *     notice, this list of conditions and the following disclaimer.
16  *  2. Redistributions in binary form must reproduce the above copyright
17  *     notice, this list of conditions and the following disclaimer in the
18  *     documentation and/or other materials provided with the distribution.
19  *  3. Neither the name of the University nor the names of its
20  *     contributors may be used to endorse or promote products derived
21  *     from this software without specific prior written permission.
22  *
23  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26  *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30  *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34  *
35  */
36 
37 #ifndef _LINUX_NFSD_XDR4_H
38 #define _LINUX_NFSD_XDR4_H
39 
40 #include "state.h"
41 #include "nfsd.h"
42 
43 #define NFSD4_MAX_TAGLEN	128
44 #define XDR_LEN(n)                     (((n) + 3) & ~3)
45 
46 #define CURRENT_STATE_ID_FLAG (1<<0)
47 #define SAVED_STATE_ID_FLAG (1<<1)
48 
49 #define SET_STATE_ID(c, f) ((c)->sid_flags |= (f))
50 #define HAS_STATE_ID(c, f) ((c)->sid_flags & (f))
51 #define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f))
52 
53 struct nfsd4_compound_state {
54 	struct svc_fh		current_fh;
55 	struct svc_fh		save_fh;
56 	struct nfs4_stateowner	*replay_owner;
57 	struct nfs4_client	*clp;
58 	/* For sessions DRC */
59 	struct nfsd4_session	*session;
60 	struct nfsd4_slot	*slot;
61 	int			data_offset;
62 	bool                    spo_must_allowed;
63 	size_t			iovlen;
64 	u32			minorversion;
65 	__be32			status;
66 	stateid_t	current_stateid;
67 	stateid_t	save_stateid;
68 	/* to indicate current and saved state id presents */
69 	u32		sid_flags;
70 };
71 
nfsd4_has_session(struct nfsd4_compound_state * cs)72 static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
73 {
74 	return cs->slot != NULL;
75 }
76 
77 struct nfsd4_change_info {
78 	u32		atomic;
79 	bool		change_supported;
80 	u32		before_ctime_sec;
81 	u32		before_ctime_nsec;
82 	u64		before_change;
83 	u32		after_ctime_sec;
84 	u32		after_ctime_nsec;
85 	u64		after_change;
86 };
87 
88 struct nfsd4_access {
89 	u32		ac_req_access;      /* request */
90 	u32		ac_supported;       /* response */
91 	u32		ac_resp_access;     /* response */
92 };
93 
94 struct nfsd4_close {
95 	u32		cl_seqid;           /* request */
96 	stateid_t	cl_stateid;         /* request+response */
97 };
98 
99 struct nfsd4_commit {
100 	u64		co_offset;          /* request */
101 	u32		co_count;           /* request */
102 	nfs4_verifier	co_verf;            /* response */
103 };
104 
105 struct nfsd4_create {
106 	u32		cr_namelen;         /* request */
107 	char *		cr_name;            /* request */
108 	u32		cr_type;            /* request */
109 	union {                             /* request */
110 		struct {
111 			u32 datalen;
112 			char *data;
113 		} link;   /* NF4LNK */
114 		struct {
115 			u32 specdata1;
116 			u32 specdata2;
117 		} dev;    /* NF4BLK, NF4CHR */
118 	} u;
119 	u32		cr_bmval[3];        /* request */
120 	struct iattr	cr_iattr;           /* request */
121 	struct nfsd4_change_info  cr_cinfo; /* response */
122 	struct nfs4_acl *cr_acl;
123 	struct xdr_netobj cr_label;
124 };
125 #define cr_datalen	u.link.datalen
126 #define cr_data		u.link.data
127 #define cr_specdata1	u.dev.specdata1
128 #define cr_specdata2	u.dev.specdata2
129 
130 struct nfsd4_delegreturn {
131 	stateid_t	dr_stateid;
132 };
133 
134 struct nfsd4_getattr {
135 	u32		ga_bmval[3];        /* request */
136 	struct svc_fh	*ga_fhp;            /* response */
137 };
138 
139 struct nfsd4_link {
140 	u32		li_namelen;         /* request */
141 	char *		li_name;            /* request */
142 	struct nfsd4_change_info  li_cinfo; /* response */
143 };
144 
145 struct nfsd4_lock_denied {
146 	clientid_t	ld_clientid;
147 	struct xdr_netobj	ld_owner;
148 	u64             ld_start;
149 	u64             ld_length;
150 	u32             ld_type;
151 };
152 
153 struct nfsd4_lock {
154 	/* request */
155 	u32             lk_type;
156 	u32             lk_reclaim;         /* boolean */
157 	u64             lk_offset;
158 	u64             lk_length;
159 	u32             lk_is_new;
160 	union {
161 		struct {
162 			u32             open_seqid;
163 			stateid_t       open_stateid;
164 			u32             lock_seqid;
165 			clientid_t      clientid;
166 			struct xdr_netobj owner;
167 		} new;
168 		struct {
169 			stateid_t       lock_stateid;
170 			u32             lock_seqid;
171 		} old;
172 	} v;
173 
174 	/* response */
175 	union {
176 		struct {
177 			stateid_t               stateid;
178 		} ok;
179 		struct nfsd4_lock_denied        denied;
180 	} u;
181 };
182 #define lk_new_open_seqid       v.new.open_seqid
183 #define lk_new_open_stateid     v.new.open_stateid
184 #define lk_new_lock_seqid       v.new.lock_seqid
185 #define lk_new_clientid         v.new.clientid
186 #define lk_new_owner            v.new.owner
187 #define lk_old_lock_stateid     v.old.lock_stateid
188 #define lk_old_lock_seqid       v.old.lock_seqid
189 
190 #define lk_resp_stateid u.ok.stateid
191 #define lk_denied       u.denied
192 
193 
194 struct nfsd4_lockt {
195 	u32				lt_type;
196 	clientid_t			lt_clientid;
197 	struct xdr_netobj		lt_owner;
198 	u64				lt_offset;
199 	u64				lt_length;
200 	struct nfsd4_lock_denied  	lt_denied;
201 };
202 
203 
204 struct nfsd4_locku {
205 	u32             lu_type;
206 	u32             lu_seqid;
207 	stateid_t       lu_stateid;
208 	u64             lu_offset;
209 	u64             lu_length;
210 };
211 
212 
213 struct nfsd4_lookup {
214 	u32		lo_len;             /* request */
215 	char *		lo_name;            /* request */
216 };
217 
218 struct nfsd4_putfh {
219 	u32		pf_fhlen;           /* request */
220 	char		*pf_fhval;          /* request */
221 };
222 
223 struct nfsd4_open {
224 	u32		op_claim_type;      /* request */
225 	struct xdr_netobj op_fname;	    /* request - everything but CLAIM_PREV */
226 	u32		op_delegate_type;   /* request - CLAIM_PREV only */
227 	stateid_t       op_delegate_stateid; /* request - response */
228 	u32		op_why_no_deleg;    /* response - DELEG_NONE_EXT only */
229 	u32		op_create;     	    /* request */
230 	u32		op_createmode;      /* request */
231 	u32		op_bmval[3];        /* request */
232 	struct iattr	op_iattr;           /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
233 	nfs4_verifier	op_verf __attribute__((aligned(32)));
234 					    /* EXCLUSIVE4 */
235 	clientid_t	op_clientid;        /* request */
236 	struct xdr_netobj op_owner;           /* request */
237 	u32		op_seqid;           /* request */
238 	u32		op_share_access;    /* request */
239 	u32		op_share_deny;      /* request */
240 	u32		op_deleg_want;      /* request */
241 	stateid_t	op_stateid;         /* response */
242 	__be32		op_xdr_error;       /* see nfsd4_open_omfg() */
243 	u32		op_recall;          /* recall */
244 	struct nfsd4_change_info  op_cinfo; /* response */
245 	u32		op_rflags;          /* response */
246 	bool		op_truncate;        /* used during processing */
247 	bool		op_created;         /* used during processing */
248 	struct nfs4_openowner *op_openowner; /* used during processing */
249 	struct nfs4_file *op_file;          /* used during processing */
250 	struct nfs4_ol_stateid *op_stp;	    /* used during processing */
251 	struct nfs4_clnt_odstate *op_odstate; /* used during processing */
252 	struct nfs4_acl *op_acl;
253 	struct xdr_netobj op_label;
254 };
255 
256 struct nfsd4_open_confirm {
257 	stateid_t	oc_req_stateid		/* request */;
258 	u32		oc_seqid    		/* request */;
259 	stateid_t	oc_resp_stateid		/* response */;
260 };
261 
262 struct nfsd4_open_downgrade {
263 	stateid_t       od_stateid;
264 	u32             od_seqid;
265 	u32             od_share_access;	/* request */
266 	u32		od_deleg_want;		/* request */
267 	u32             od_share_deny;		/* request */
268 };
269 
270 
271 struct nfsd4_read {
272 	stateid_t	rd_stateid;         /* request */
273 	u64		rd_offset;          /* request */
274 	u32		rd_length;          /* request */
275 	int		rd_vlen;
276 	struct file     *rd_filp;
277 	bool		rd_tmp_file;
278 
279 	struct svc_rqst *rd_rqstp;          /* response */
280 	struct svc_fh * rd_fhp;             /* response */
281 };
282 
283 struct nfsd4_readdir {
284 	u64		rd_cookie;          /* request */
285 	nfs4_verifier	rd_verf;            /* request */
286 	u32		rd_dircount;        /* request */
287 	u32		rd_maxcount;        /* request */
288 	u32		rd_bmval[3];        /* request */
289 	struct svc_rqst *rd_rqstp;          /* response */
290 	struct svc_fh * rd_fhp;             /* response */
291 
292 	struct readdir_cd	common;
293 	struct xdr_stream	*xdr;
294 	int			cookie_offset;
295 };
296 
297 struct nfsd4_release_lockowner {
298 	clientid_t        rl_clientid;
299 	struct xdr_netobj rl_owner;
300 };
301 struct nfsd4_readlink {
302 	struct svc_rqst *rl_rqstp;          /* request */
303 	struct svc_fh *	rl_fhp;             /* request */
304 };
305 
306 struct nfsd4_remove {
307 	u32		rm_namelen;         /* request */
308 	char *		rm_name;            /* request */
309 	struct nfsd4_change_info  rm_cinfo; /* response */
310 };
311 
312 struct nfsd4_rename {
313 	u32		rn_snamelen;        /* request */
314 	char *		rn_sname;           /* request */
315 	u32		rn_tnamelen;        /* request */
316 	char *		rn_tname;           /* request */
317 	struct nfsd4_change_info  rn_sinfo; /* response */
318 	struct nfsd4_change_info  rn_tinfo; /* response */
319 };
320 
321 struct nfsd4_secinfo {
322 	u32 si_namelen;					/* request */
323 	char *si_name;					/* request */
324 	struct svc_export *si_exp;			/* response */
325 };
326 
327 struct nfsd4_secinfo_no_name {
328 	u32 sin_style;					/* request */
329 	struct svc_export *sin_exp;			/* response */
330 };
331 
332 struct nfsd4_setattr {
333 	stateid_t	sa_stateid;         /* request */
334 	u32		sa_bmval[3];        /* request */
335 	struct iattr	sa_iattr;           /* request */
336 	struct nfs4_acl *sa_acl;
337 	struct xdr_netobj sa_label;
338 };
339 
340 struct nfsd4_setclientid {
341 	nfs4_verifier	se_verf;            /* request */
342 	struct xdr_netobj se_name;
343 	u32		se_callback_prog;   /* request */
344 	u32		se_callback_netid_len;  /* request */
345 	char *		se_callback_netid_val;  /* request */
346 	u32		se_callback_addr_len;   /* request */
347 	char *		se_callback_addr_val;   /* request */
348 	u32		se_callback_ident;  /* request */
349 	clientid_t	se_clientid;        /* response */
350 	nfs4_verifier	se_confirm;         /* response */
351 };
352 
353 struct nfsd4_setclientid_confirm {
354 	clientid_t	sc_clientid;
355 	nfs4_verifier	sc_confirm;
356 };
357 
358 struct nfsd4_saved_compoundargs {
359 	__be32 *p;
360 	__be32 *end;
361 	int pagelen;
362 	struct page **pagelist;
363 };
364 
365 struct nfsd4_test_stateid_id {
366 	__be32			ts_id_status;
367 	stateid_t		ts_id_stateid;
368 	struct list_head	ts_id_list;
369 };
370 
371 struct nfsd4_test_stateid {
372 	u32		ts_num_ids;
373 	struct list_head ts_stateid_list;
374 };
375 
376 struct nfsd4_free_stateid {
377 	stateid_t	fr_stateid;         /* request */
378 };
379 
380 /* also used for NVERIFY */
381 struct nfsd4_verify {
382 	u32		ve_bmval[3];        /* request */
383 	u32		ve_attrlen;         /* request */
384 	char *		ve_attrval;         /* request */
385 };
386 
387 struct nfsd4_write {
388 	stateid_t	wr_stateid;         /* request */
389 	u64		wr_offset;          /* request */
390 	u32		wr_stable_how;      /* request */
391 	u32		wr_buflen;          /* request */
392 	struct kvec	wr_head;
393 	struct page **	wr_pagelist;        /* request */
394 
395 	u32		wr_bytes_written;   /* response */
396 	u32		wr_how_written;     /* response */
397 	nfs4_verifier	wr_verifier;        /* response */
398 };
399 
400 struct nfsd4_exchange_id {
401 	nfs4_verifier	verifier;
402 	struct xdr_netobj clname;
403 	u32		flags;
404 	clientid_t	clientid;
405 	u32		seqid;
406 	int		spa_how;
407 	u32             spo_must_enforce[3];
408 	u32             spo_must_allow[3];
409 };
410 
411 struct nfsd4_sequence {
412 	struct nfs4_sessionid	sessionid;		/* request/response */
413 	u32			seqid;			/* request/response */
414 	u32			slotid;			/* request/response */
415 	u32			maxslots;		/* request/response */
416 	u32			cachethis;		/* request */
417 #if 0
418 	u32			target_maxslots;	/* response */
419 #endif /* not yet */
420 	u32			status_flags;		/* response */
421 };
422 
423 struct nfsd4_destroy_session {
424 	struct nfs4_sessionid	sessionid;
425 };
426 
427 struct nfsd4_destroy_clientid {
428 	clientid_t clientid;
429 };
430 
431 struct nfsd4_reclaim_complete {
432 	u32 rca_one_fs;
433 };
434 
435 struct nfsd4_deviceid {
436 	u64			fsid_idx;
437 	u32			generation;
438 	u32			pad;
439 };
440 
441 struct nfsd4_layout_seg {
442 	u32			iomode;
443 	u64			offset;
444 	u64			length;
445 };
446 
447 struct nfsd4_getdeviceinfo {
448 	struct nfsd4_deviceid	gd_devid;	/* request */
449 	u32			gd_layout_type;	/* request */
450 	u32			gd_maxcount;	/* request */
451 	u32			gd_notify_types;/* request - response */
452 	void			*gd_device;	/* response */
453 };
454 
455 struct nfsd4_layoutget {
456 	u64			lg_minlength;	/* request */
457 	u32			lg_signal;	/* request */
458 	u32			lg_layout_type;	/* request */
459 	u32			lg_maxcount;	/* request */
460 	stateid_t		lg_sid;		/* request/response */
461 	struct nfsd4_layout_seg	lg_seg;		/* request/response */
462 	void			*lg_content;	/* response */
463 };
464 
465 struct nfsd4_layoutcommit {
466 	stateid_t		lc_sid;		/* request */
467 	struct nfsd4_layout_seg	lc_seg;		/* request */
468 	u32			lc_reclaim;	/* request */
469 	u32			lc_newoffset;	/* request */
470 	u64			lc_last_wr;	/* request */
471 	struct timespec		lc_mtime;	/* request */
472 	u32			lc_layout_type;	/* request */
473 	u32			lc_up_len;	/* layout length */
474 	void			*lc_up_layout;	/* decoded by callback */
475 	u32			lc_size_chg;	/* boolean for response */
476 	u64			lc_newsize;	/* response */
477 };
478 
479 struct nfsd4_layoutreturn {
480 	u32			lr_return_type;	/* request */
481 	u32			lr_layout_type;	/* request */
482 	struct nfsd4_layout_seg	lr_seg;		/* request */
483 	u32			lr_reclaim;	/* request */
484 	u32			lrf_body_len;	/* request */
485 	void			*lrf_body;	/* request */
486 	stateid_t		lr_sid;		/* request/response */
487 	u32			lrs_present;	/* response */
488 };
489 
490 struct nfsd4_fallocate {
491 	/* request */
492 	stateid_t	falloc_stateid;
493 	loff_t		falloc_offset;
494 	u64		falloc_length;
495 };
496 
497 struct nfsd4_clone {
498 	/* request */
499 	stateid_t	cl_src_stateid;
500 	stateid_t	cl_dst_stateid;
501 	u64		cl_src_pos;
502 	u64		cl_dst_pos;
503 	u64		cl_count;
504 };
505 
506 struct nfsd42_write_res {
507 	u64			wr_bytes_written;
508 	u32			wr_stable_how;
509 	nfs4_verifier		wr_verifier;
510 };
511 
512 struct nfsd4_copy {
513 	/* request */
514 	stateid_t	cp_src_stateid;
515 	stateid_t	cp_dst_stateid;
516 	u64		cp_src_pos;
517 	u64		cp_dst_pos;
518 	u64		cp_count;
519 
520 	/* both */
521 	bool		cp_consecutive;
522 	bool		cp_synchronous;
523 
524 	/* response */
525 	struct nfsd42_write_res	cp_res;
526 };
527 
528 struct nfsd4_seek {
529 	/* request */
530 	stateid_t	seek_stateid;
531 	loff_t		seek_offset;
532 	u32		seek_whence;
533 
534 	/* response */
535 	u32		seek_eof;
536 	loff_t		seek_pos;
537 };
538 
539 struct nfsd4_op {
540 	int					opnum;
541 	__be32					status;
542 	union {
543 		struct nfsd4_access		access;
544 		struct nfsd4_close		close;
545 		struct nfsd4_commit		commit;
546 		struct nfsd4_create		create;
547 		struct nfsd4_delegreturn	delegreturn;
548 		struct nfsd4_getattr		getattr;
549 		struct svc_fh *			getfh;
550 		struct nfsd4_link		link;
551 		struct nfsd4_lock		lock;
552 		struct nfsd4_lockt		lockt;
553 		struct nfsd4_locku		locku;
554 		struct nfsd4_lookup		lookup;
555 		struct nfsd4_verify		nverify;
556 		struct nfsd4_open		open;
557 		struct nfsd4_open_confirm	open_confirm;
558 		struct nfsd4_open_downgrade	open_downgrade;
559 		struct nfsd4_putfh		putfh;
560 		struct nfsd4_read		read;
561 		struct nfsd4_readdir		readdir;
562 		struct nfsd4_readlink		readlink;
563 		struct nfsd4_remove		remove;
564 		struct nfsd4_rename		rename;
565 		clientid_t			renew;
566 		struct nfsd4_secinfo		secinfo;
567 		struct nfsd4_setattr		setattr;
568 		struct nfsd4_setclientid	setclientid;
569 		struct nfsd4_setclientid_confirm setclientid_confirm;
570 		struct nfsd4_verify		verify;
571 		struct nfsd4_write		write;
572 		struct nfsd4_release_lockowner	release_lockowner;
573 
574 		/* NFSv4.1 */
575 		struct nfsd4_exchange_id	exchange_id;
576 		struct nfsd4_backchannel_ctl	backchannel_ctl;
577 		struct nfsd4_bind_conn_to_session bind_conn_to_session;
578 		struct nfsd4_create_session	create_session;
579 		struct nfsd4_destroy_session	destroy_session;
580 		struct nfsd4_sequence		sequence;
581 		struct nfsd4_reclaim_complete	reclaim_complete;
582 		struct nfsd4_test_stateid	test_stateid;
583 		struct nfsd4_free_stateid	free_stateid;
584 		struct nfsd4_getdeviceinfo	getdeviceinfo;
585 		struct nfsd4_layoutget		layoutget;
586 		struct nfsd4_layoutcommit	layoutcommit;
587 		struct nfsd4_layoutreturn	layoutreturn;
588 
589 		/* NFSv4.2 */
590 		struct nfsd4_fallocate		allocate;
591 		struct nfsd4_fallocate		deallocate;
592 		struct nfsd4_clone		clone;
593 		struct nfsd4_copy		copy;
594 		struct nfsd4_seek		seek;
595 	} u;
596 	struct nfs4_replay *			replay;
597 };
598 
599 bool nfsd4_cache_this_op(struct nfsd4_op *);
600 
601 /*
602  * Memory needed just for the duration of processing one compound:
603  */
604 struct svcxdr_tmpbuf {
605 	struct svcxdr_tmpbuf *next;
606 	char buf[];
607 };
608 
609 struct nfsd4_compoundargs {
610 	/* scratch variables for XDR decode */
611 	__be32 *			p;
612 	__be32 *			end;
613 	struct page **			pagelist;
614 	int				pagelen;
615 	__be32				tmp[8];
616 	__be32 *			tmpp;
617 	struct svcxdr_tmpbuf		*to_free;
618 
619 	struct svc_rqst			*rqstp;
620 
621 	u32				taglen;
622 	char *				tag;
623 	u32				minorversion;
624 	u32				opcnt;
625 	struct nfsd4_op			*ops;
626 	struct nfsd4_op			iops[8];
627 	int				cachetype;
628 };
629 
630 struct nfsd4_compoundres {
631 	/* scratch variables for XDR encode */
632 	struct xdr_stream		xdr;
633 	struct svc_rqst *		rqstp;
634 
635 	u32				taglen;
636 	char *				tag;
637 	u32				opcnt;
638 	__be32 *			tagp; /* tag, opcount encode location */
639 	struct nfsd4_compound_state	cstate;
640 };
641 
nfsd4_is_solo_sequence(struct nfsd4_compoundres * resp)642 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
643 {
644 	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
645 	return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
646 }
647 
nfsd4_not_cached(struct nfsd4_compoundres * resp)648 static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
649 {
650 	return !(resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
651 		|| nfsd4_is_solo_sequence(resp);
652 }
653 
nfsd4_last_compound_op(struct svc_rqst * rqstp)654 static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
655 {
656 	struct nfsd4_compoundres *resp = rqstp->rq_resp;
657 	struct nfsd4_compoundargs *argp = rqstp->rq_argp;
658 
659 	return argp->opcnt == resp->opcnt;
660 }
661 
662 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
663 void warn_on_nonidempotent_op(struct nfsd4_op *op);
664 
665 #define NFS4_SVC_XDRSIZE		sizeof(struct nfsd4_compoundargs)
666 
667 static inline void
set_change_info(struct nfsd4_change_info * cinfo,struct svc_fh * fhp)668 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
669 {
670 	BUG_ON(!fhp->fh_pre_saved);
671 	cinfo->atomic = (u32)fhp->fh_post_saved;
672 	cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry));
673 
674 	cinfo->before_change = fhp->fh_pre_change;
675 	cinfo->after_change = fhp->fh_post_change;
676 	cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
677 	cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
678 	cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
679 	cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
680 
681 }
682 
683 
684 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
685 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
686 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
687 		struct nfsd4_compoundargs *);
688 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
689 		struct nfsd4_compoundres *);
690 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
691 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
692 void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
693 __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
694 		struct svc_fh *fhp, struct svc_export *exp,
695 		struct dentry *dentry,
696 		u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
697 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
698 		struct nfsd4_compound_state *,
699 		struct nfsd4_setclientid *setclid);
700 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
701 		struct nfsd4_compound_state *,
702 		struct nfsd4_setclientid_confirm *setclientid_confirm);
703 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
704 		struct nfsd4_compound_state *, struct nfsd4_exchange_id *);
705 extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_backchannel_ctl *);
706 extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_bind_conn_to_session *);
707 extern __be32 nfsd4_create_session(struct svc_rqst *,
708 		struct nfsd4_compound_state *,
709 		struct nfsd4_create_session *);
710 extern __be32 nfsd4_sequence(struct svc_rqst *,
711 		struct nfsd4_compound_state *,
712 		struct nfsd4_sequence *);
713 extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
714 extern __be32 nfsd4_destroy_session(struct svc_rqst *,
715 		struct nfsd4_compound_state *,
716 		struct nfsd4_destroy_session *);
717 extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
718 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
719 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
720 		struct nfsd4_open *open, struct nfsd_net *nn);
721 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
722 		struct svc_fh *current_fh, struct nfsd4_open *open);
723 extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
724 extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
725 		struct nfsd4_open *open);
726 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
727 		struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
728 extern __be32 nfsd4_close(struct svc_rqst *rqstp,
729 		struct nfsd4_compound_state *,
730 		struct nfsd4_close *close);
731 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
732 		struct nfsd4_compound_state *,
733 		struct nfsd4_open_downgrade *od);
734 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
735 		struct nfsd4_lock *lock);
736 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
737 		struct nfsd4_compound_state *,
738 		struct nfsd4_lockt *lockt);
739 extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
740 		struct nfsd4_compound_state *,
741 		struct nfsd4_locku *locku);
742 extern __be32
743 nfsd4_release_lockowner(struct svc_rqst *rqstp,
744 		struct nfsd4_compound_state *,
745 		struct nfsd4_release_lockowner *rlockowner);
746 extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
747 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
748 		struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
749 extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
750 			  struct nfsd4_compound_state *, clientid_t *clid);
751 extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
752 		struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
753 extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
754 		struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
755 extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
756 
757 #endif
758 
759 /*
760  * Local variables:
761  *  c-basic-offset: 8
762  * End:
763  */
764