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 struct kvec first;
114 } link; /* NF4LNK */
115 struct {
116 u32 specdata1;
117 u32 specdata2;
118 } dev; /* NF4BLK, NF4CHR */
119 } u;
120 u32 cr_bmval[3]; /* request */
121 struct iattr cr_iattr; /* request */
122 int cr_umask; /* request */
123 struct nfsd4_change_info cr_cinfo; /* response */
124 struct nfs4_acl *cr_acl;
125 struct xdr_netobj cr_label;
126 };
127 #define cr_datalen u.link.datalen
128 #define cr_data u.link.data
129 #define cr_first u.link.first
130 #define cr_specdata1 u.dev.specdata1
131 #define cr_specdata2 u.dev.specdata2
132
133 struct nfsd4_delegreturn {
134 stateid_t dr_stateid;
135 };
136
137 struct nfsd4_getattr {
138 u32 ga_bmval[3]; /* request */
139 struct svc_fh *ga_fhp; /* response */
140 };
141
142 struct nfsd4_link {
143 u32 li_namelen; /* request */
144 char * li_name; /* request */
145 struct nfsd4_change_info li_cinfo; /* response */
146 };
147
148 struct nfsd4_lock_denied {
149 clientid_t ld_clientid;
150 struct xdr_netobj ld_owner;
151 u64 ld_start;
152 u64 ld_length;
153 u32 ld_type;
154 };
155
156 struct nfsd4_lock {
157 /* request */
158 u32 lk_type;
159 u32 lk_reclaim; /* boolean */
160 u64 lk_offset;
161 u64 lk_length;
162 u32 lk_is_new;
163 union {
164 struct {
165 u32 open_seqid;
166 stateid_t open_stateid;
167 u32 lock_seqid;
168 clientid_t clientid;
169 struct xdr_netobj owner;
170 } new;
171 struct {
172 stateid_t lock_stateid;
173 u32 lock_seqid;
174 } old;
175 } v;
176
177 /* response */
178 union {
179 struct {
180 stateid_t stateid;
181 } ok;
182 struct nfsd4_lock_denied denied;
183 } u;
184 };
185 #define lk_new_open_seqid v.new.open_seqid
186 #define lk_new_open_stateid v.new.open_stateid
187 #define lk_new_lock_seqid v.new.lock_seqid
188 #define lk_new_clientid v.new.clientid
189 #define lk_new_owner v.new.owner
190 #define lk_old_lock_stateid v.old.lock_stateid
191 #define lk_old_lock_seqid v.old.lock_seqid
192
193 #define lk_resp_stateid u.ok.stateid
194 #define lk_denied u.denied
195
196
197 struct nfsd4_lockt {
198 u32 lt_type;
199 clientid_t lt_clientid;
200 struct xdr_netobj lt_owner;
201 u64 lt_offset;
202 u64 lt_length;
203 struct nfsd4_lock_denied lt_denied;
204 };
205
206
207 struct nfsd4_locku {
208 u32 lu_type;
209 u32 lu_seqid;
210 stateid_t lu_stateid;
211 u64 lu_offset;
212 u64 lu_length;
213 };
214
215
216 struct nfsd4_lookup {
217 u32 lo_len; /* request */
218 char * lo_name; /* request */
219 };
220
221 struct nfsd4_putfh {
222 u32 pf_fhlen; /* request */
223 char *pf_fhval; /* request */
224 };
225
226 struct nfsd4_open {
227 u32 op_claim_type; /* request */
228 struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
229 u32 op_delegate_type; /* request - CLAIM_PREV only */
230 stateid_t op_delegate_stateid; /* request - response */
231 u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */
232 u32 op_create; /* request */
233 u32 op_createmode; /* request */
234 int op_umask; /* request */
235 u32 op_bmval[3]; /* request */
236 struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
237 nfs4_verifier op_verf __attribute__((aligned(32)));
238 /* EXCLUSIVE4 */
239 clientid_t op_clientid; /* request */
240 struct xdr_netobj op_owner; /* request */
241 u32 op_seqid; /* request */
242 u32 op_share_access; /* request */
243 u32 op_share_deny; /* request */
244 u32 op_deleg_want; /* request */
245 stateid_t op_stateid; /* response */
246 __be32 op_xdr_error; /* see nfsd4_open_omfg() */
247 u32 op_recall; /* recall */
248 struct nfsd4_change_info op_cinfo; /* response */
249 u32 op_rflags; /* response */
250 bool op_truncate; /* used during processing */
251 bool op_created; /* used during processing */
252 struct nfs4_openowner *op_openowner; /* used during processing */
253 struct nfs4_file *op_file; /* used during processing */
254 struct nfs4_ol_stateid *op_stp; /* used during processing */
255 struct nfs4_clnt_odstate *op_odstate; /* used during processing */
256 struct nfs4_acl *op_acl;
257 struct xdr_netobj op_label;
258 };
259
260 struct nfsd4_open_confirm {
261 stateid_t oc_req_stateid /* request */;
262 u32 oc_seqid /* request */;
263 stateid_t oc_resp_stateid /* response */;
264 };
265
266 struct nfsd4_open_downgrade {
267 stateid_t od_stateid;
268 u32 od_seqid;
269 u32 od_share_access; /* request */
270 u32 od_deleg_want; /* request */
271 u32 od_share_deny; /* request */
272 };
273
274
275 struct nfsd4_read {
276 stateid_t rd_stateid; /* request */
277 u64 rd_offset; /* request */
278 u32 rd_length; /* request */
279 int rd_vlen;
280 struct file *rd_filp;
281 bool rd_tmp_file;
282
283 struct svc_rqst *rd_rqstp; /* response */
284 struct svc_fh * rd_fhp; /* response */
285 };
286
287 struct nfsd4_readdir {
288 u64 rd_cookie; /* request */
289 nfs4_verifier rd_verf; /* request */
290 u32 rd_dircount; /* request */
291 u32 rd_maxcount; /* request */
292 u32 rd_bmval[3]; /* request */
293 struct svc_rqst *rd_rqstp; /* response */
294 struct svc_fh * rd_fhp; /* response */
295
296 struct readdir_cd common;
297 struct xdr_stream *xdr;
298 int cookie_offset;
299 };
300
301 struct nfsd4_release_lockowner {
302 clientid_t rl_clientid;
303 struct xdr_netobj rl_owner;
304 };
305 struct nfsd4_readlink {
306 struct svc_rqst *rl_rqstp; /* request */
307 struct svc_fh * rl_fhp; /* request */
308 };
309
310 struct nfsd4_remove {
311 u32 rm_namelen; /* request */
312 char * rm_name; /* request */
313 struct nfsd4_change_info rm_cinfo; /* response */
314 };
315
316 struct nfsd4_rename {
317 u32 rn_snamelen; /* request */
318 char * rn_sname; /* request */
319 u32 rn_tnamelen; /* request */
320 char * rn_tname; /* request */
321 struct nfsd4_change_info rn_sinfo; /* response */
322 struct nfsd4_change_info rn_tinfo; /* response */
323 };
324
325 struct nfsd4_secinfo {
326 u32 si_namelen; /* request */
327 char *si_name; /* request */
328 struct svc_export *si_exp; /* response */
329 };
330
331 struct nfsd4_secinfo_no_name {
332 u32 sin_style; /* request */
333 struct svc_export *sin_exp; /* response */
334 };
335
336 struct nfsd4_setattr {
337 stateid_t sa_stateid; /* request */
338 u32 sa_bmval[3]; /* request */
339 struct iattr sa_iattr; /* request */
340 struct nfs4_acl *sa_acl;
341 struct xdr_netobj sa_label;
342 };
343
344 struct nfsd4_setclientid {
345 nfs4_verifier se_verf; /* request */
346 struct xdr_netobj se_name;
347 u32 se_callback_prog; /* request */
348 u32 se_callback_netid_len; /* request */
349 char * se_callback_netid_val; /* request */
350 u32 se_callback_addr_len; /* request */
351 char * se_callback_addr_val; /* request */
352 u32 se_callback_ident; /* request */
353 clientid_t se_clientid; /* response */
354 nfs4_verifier se_confirm; /* response */
355 };
356
357 struct nfsd4_setclientid_confirm {
358 clientid_t sc_clientid;
359 nfs4_verifier sc_confirm;
360 };
361
362 struct nfsd4_saved_compoundargs {
363 __be32 *p;
364 __be32 *end;
365 int pagelen;
366 struct page **pagelist;
367 };
368
369 struct nfsd4_test_stateid_id {
370 __be32 ts_id_status;
371 stateid_t ts_id_stateid;
372 struct list_head ts_id_list;
373 };
374
375 struct nfsd4_test_stateid {
376 u32 ts_num_ids;
377 struct list_head ts_stateid_list;
378 };
379
380 struct nfsd4_free_stateid {
381 stateid_t fr_stateid; /* request */
382 };
383
384 /* also used for NVERIFY */
385 struct nfsd4_verify {
386 u32 ve_bmval[3]; /* request */
387 u32 ve_attrlen; /* request */
388 char * ve_attrval; /* request */
389 };
390
391 struct nfsd4_write {
392 stateid_t wr_stateid; /* request */
393 u64 wr_offset; /* request */
394 u32 wr_stable_how; /* request */
395 u32 wr_buflen; /* request */
396 struct kvec wr_head;
397 struct page ** wr_pagelist; /* request */
398
399 u32 wr_bytes_written; /* response */
400 u32 wr_how_written; /* response */
401 nfs4_verifier wr_verifier; /* response */
402 };
403
404 struct nfsd4_exchange_id {
405 nfs4_verifier verifier;
406 struct xdr_netobj clname;
407 u32 flags;
408 clientid_t clientid;
409 u32 seqid;
410 int spa_how;
411 u32 spo_must_enforce[3];
412 u32 spo_must_allow[3];
413 };
414
415 struct nfsd4_sequence {
416 struct nfs4_sessionid sessionid; /* request/response */
417 u32 seqid; /* request/response */
418 u32 slotid; /* request/response */
419 u32 maxslots; /* request/response */
420 u32 cachethis; /* request */
421 #if 0
422 u32 target_maxslots; /* response */
423 #endif /* not yet */
424 u32 status_flags; /* response */
425 };
426
427 struct nfsd4_destroy_session {
428 struct nfs4_sessionid sessionid;
429 };
430
431 struct nfsd4_destroy_clientid {
432 clientid_t clientid;
433 };
434
435 struct nfsd4_reclaim_complete {
436 u32 rca_one_fs;
437 };
438
439 struct nfsd4_deviceid {
440 u64 fsid_idx;
441 u32 generation;
442 u32 pad;
443 };
444
445 struct nfsd4_layout_seg {
446 u32 iomode;
447 u64 offset;
448 u64 length;
449 };
450
451 struct nfsd4_getdeviceinfo {
452 struct nfsd4_deviceid gd_devid; /* request */
453 u32 gd_layout_type; /* request */
454 u32 gd_maxcount; /* request */
455 u32 gd_notify_types;/* request - response */
456 void *gd_device; /* response */
457 };
458
459 struct nfsd4_layoutget {
460 u64 lg_minlength; /* request */
461 u32 lg_signal; /* request */
462 u32 lg_layout_type; /* request */
463 u32 lg_maxcount; /* request */
464 stateid_t lg_sid; /* request/response */
465 struct nfsd4_layout_seg lg_seg; /* request/response */
466 void *lg_content; /* response */
467 };
468
469 struct nfsd4_layoutcommit {
470 stateid_t lc_sid; /* request */
471 struct nfsd4_layout_seg lc_seg; /* request */
472 u32 lc_reclaim; /* request */
473 u32 lc_newoffset; /* request */
474 u64 lc_last_wr; /* request */
475 struct timespec lc_mtime; /* request */
476 u32 lc_layout_type; /* request */
477 u32 lc_up_len; /* layout length */
478 void *lc_up_layout; /* decoded by callback */
479 u32 lc_size_chg; /* boolean for response */
480 u64 lc_newsize; /* response */
481 };
482
483 struct nfsd4_layoutreturn {
484 u32 lr_return_type; /* request */
485 u32 lr_layout_type; /* request */
486 struct nfsd4_layout_seg lr_seg; /* request */
487 u32 lr_reclaim; /* request */
488 u32 lrf_body_len; /* request */
489 void *lrf_body; /* request */
490 stateid_t lr_sid; /* request/response */
491 u32 lrs_present; /* response */
492 };
493
494 struct nfsd4_fallocate {
495 /* request */
496 stateid_t falloc_stateid;
497 loff_t falloc_offset;
498 u64 falloc_length;
499 };
500
501 struct nfsd4_clone {
502 /* request */
503 stateid_t cl_src_stateid;
504 stateid_t cl_dst_stateid;
505 u64 cl_src_pos;
506 u64 cl_dst_pos;
507 u64 cl_count;
508 };
509
510 struct nfsd42_write_res {
511 u64 wr_bytes_written;
512 u32 wr_stable_how;
513 nfs4_verifier wr_verifier;
514 };
515
516 struct nfsd4_copy {
517 /* request */
518 stateid_t cp_src_stateid;
519 stateid_t cp_dst_stateid;
520 u64 cp_src_pos;
521 u64 cp_dst_pos;
522 u64 cp_count;
523
524 /* both */
525 bool cp_synchronous;
526
527 /* response */
528 struct nfsd42_write_res cp_res;
529 };
530
531 struct nfsd4_seek {
532 /* request */
533 stateid_t seek_stateid;
534 loff_t seek_offset;
535 u32 seek_whence;
536
537 /* response */
538 u32 seek_eof;
539 loff_t seek_pos;
540 };
541
542 struct nfsd4_op {
543 int opnum;
544 const struct nfsd4_operation * opdesc;
545 __be32 status;
546 union nfsd4_op_u {
547 struct nfsd4_access access;
548 struct nfsd4_close close;
549 struct nfsd4_commit commit;
550 struct nfsd4_create create;
551 struct nfsd4_delegreturn delegreturn;
552 struct nfsd4_getattr getattr;
553 struct svc_fh * getfh;
554 struct nfsd4_link link;
555 struct nfsd4_lock lock;
556 struct nfsd4_lockt lockt;
557 struct nfsd4_locku locku;
558 struct nfsd4_lookup lookup;
559 struct nfsd4_verify nverify;
560 struct nfsd4_open open;
561 struct nfsd4_open_confirm open_confirm;
562 struct nfsd4_open_downgrade open_downgrade;
563 struct nfsd4_putfh putfh;
564 struct nfsd4_read read;
565 struct nfsd4_readdir readdir;
566 struct nfsd4_readlink readlink;
567 struct nfsd4_remove remove;
568 struct nfsd4_rename rename;
569 clientid_t renew;
570 struct nfsd4_secinfo secinfo;
571 struct nfsd4_setattr setattr;
572 struct nfsd4_setclientid setclientid;
573 struct nfsd4_setclientid_confirm setclientid_confirm;
574 struct nfsd4_verify verify;
575 struct nfsd4_write write;
576 struct nfsd4_release_lockowner release_lockowner;
577
578 /* NFSv4.1 */
579 struct nfsd4_exchange_id exchange_id;
580 struct nfsd4_backchannel_ctl backchannel_ctl;
581 struct nfsd4_bind_conn_to_session bind_conn_to_session;
582 struct nfsd4_create_session create_session;
583 struct nfsd4_destroy_session destroy_session;
584 struct nfsd4_destroy_clientid destroy_clientid;
585 struct nfsd4_sequence sequence;
586 struct nfsd4_reclaim_complete reclaim_complete;
587 struct nfsd4_test_stateid test_stateid;
588 struct nfsd4_free_stateid free_stateid;
589 struct nfsd4_getdeviceinfo getdeviceinfo;
590 struct nfsd4_layoutget layoutget;
591 struct nfsd4_layoutcommit layoutcommit;
592 struct nfsd4_layoutreturn layoutreturn;
593 struct nfsd4_secinfo_no_name secinfo_no_name;
594
595 /* NFSv4.2 */
596 struct nfsd4_fallocate allocate;
597 struct nfsd4_fallocate deallocate;
598 struct nfsd4_clone clone;
599 struct nfsd4_copy copy;
600 struct nfsd4_seek seek;
601 } u;
602 struct nfs4_replay * replay;
603 };
604
605 bool nfsd4_cache_this_op(struct nfsd4_op *);
606
607 /*
608 * Memory needed just for the duration of processing one compound:
609 */
610 struct svcxdr_tmpbuf {
611 struct svcxdr_tmpbuf *next;
612 char buf[];
613 };
614
615 struct nfsd4_compoundargs {
616 /* scratch variables for XDR decode */
617 __be32 * p;
618 __be32 * end;
619 struct page ** pagelist;
620 int pagelen;
621 bool tail;
622 __be32 tmp[8];
623 __be32 * tmpp;
624 struct svcxdr_tmpbuf *to_free;
625
626 struct svc_rqst *rqstp;
627
628 u32 taglen;
629 char * tag;
630 u32 minorversion;
631 u32 opcnt;
632 struct nfsd4_op *ops;
633 struct nfsd4_op iops[8];
634 int cachetype;
635 };
636
637 struct nfsd4_compoundres {
638 /* scratch variables for XDR encode */
639 struct xdr_stream xdr;
640 struct svc_rqst * rqstp;
641
642 u32 taglen;
643 char * tag;
644 u32 opcnt;
645 __be32 * tagp; /* tag, opcount encode location */
646 struct nfsd4_compound_state cstate;
647 };
648
nfsd4_is_solo_sequence(struct nfsd4_compoundres * resp)649 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
650 {
651 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
652 return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
653 }
654
655 /*
656 * The session reply cache only needs to cache replies that the client
657 * actually asked us to. But it's almost free for us to cache compounds
658 * consisting of only a SEQUENCE op, so we may as well cache those too.
659 * Also, the protocol doesn't give us a convenient response in the case
660 * of a replay of a solo SEQUENCE op that wasn't cached
661 * (RETRY_UNCACHED_REP can only be returned in the second op of a
662 * compound).
663 */
nfsd4_cache_this(struct nfsd4_compoundres * resp)664 static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp)
665 {
666 return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
667 || nfsd4_is_solo_sequence(resp);
668 }
669
nfsd4_last_compound_op(struct svc_rqst * rqstp)670 static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
671 {
672 struct nfsd4_compoundres *resp = rqstp->rq_resp;
673 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
674
675 return argp->opcnt == resp->opcnt;
676 }
677
678 const struct nfsd4_operation *OPDESC(struct nfsd4_op *op);
679 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
680 void warn_on_nonidempotent_op(struct nfsd4_op *op);
681
682 #define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
683
684 static inline void
set_change_info(struct nfsd4_change_info * cinfo,struct svc_fh * fhp)685 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
686 {
687 BUG_ON(!fhp->fh_pre_saved);
688 cinfo->atomic = (u32)fhp->fh_post_saved;
689 cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry));
690
691 cinfo->before_change = fhp->fh_pre_change;
692 cinfo->after_change = fhp->fh_post_change;
693 cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
694 cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
695 cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
696 cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
697
698 }
699
700
701 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
702 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *);
703 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *);
704 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *);
705 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
706 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
707 void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
708 __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
709 struct svc_fh *fhp, struct svc_export *exp,
710 struct dentry *dentry,
711 u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
712 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
713 struct nfsd4_compound_state *, union nfsd4_op_u *u);
714 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
715 struct nfsd4_compound_state *, union nfsd4_op_u *u);
716 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
717 struct nfsd4_compound_state *, union nfsd4_op_u *u);
718 extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *,
719 struct nfsd4_compound_state *, union nfsd4_op_u *u);
720 extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *,
721 struct nfsd4_compound_state *, union nfsd4_op_u *u);
722 extern __be32 nfsd4_create_session(struct svc_rqst *,
723 struct nfsd4_compound_state *, union nfsd4_op_u *u);
724 extern __be32 nfsd4_sequence(struct svc_rqst *,
725 struct nfsd4_compound_state *, union nfsd4_op_u *u);
726 extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
727 extern __be32 nfsd4_destroy_session(struct svc_rqst *,
728 struct nfsd4_compound_state *, union nfsd4_op_u *u);
729 extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *,
730 union nfsd4_op_u *u);
731 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *,
732 union nfsd4_op_u *u);
733 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
734 struct nfsd4_open *open, struct nfsd_net *nn);
735 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
736 struct svc_fh *current_fh, struct nfsd4_open *open);
737 extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
738 extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
739 struct nfsd4_open *open);
740 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
741 struct nfsd4_compound_state *, union nfsd4_op_u *u);
742 extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
743 union nfsd4_op_u *u);
744 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
745 struct nfsd4_compound_state *, union nfsd4_op_u *u);
746 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
747 union nfsd4_op_u *u);
748 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
749 union nfsd4_op_u *u);
750 extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
751 union nfsd4_op_u *u);
752 extern __be32
753 nfsd4_release_lockowner(struct svc_rqst *rqstp,
754 struct nfsd4_compound_state *, union nfsd4_op_u *u);
755 extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp);
756 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
757 struct nfsd4_compound_state *, union nfsd4_op_u *u);
758 extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
759 union nfsd4_op_u *u);
760 extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
761 struct nfsd4_compound_state *, union nfsd4_op_u *);
762 extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
763 struct nfsd4_compound_state *, union nfsd4_op_u *);
764 extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
765
766 enum nfsd4_op_flags {
767 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
768 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
769 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
770 /* For rfc 5661 section 2.6.3.1.1: */
771 OP_HANDLES_WRONGSEC = 1 << 3,
772 OP_IS_PUTFH_LIKE = 1 << 4,
773 /*
774 * These are the ops whose result size we estimate before
775 * encoding, to avoid performing an op then not being able to
776 * respond or cache a response. This includes writes and setattrs
777 * as well as the operations usually called "nonidempotent":
778 */
779 OP_MODIFIES_SOMETHING = 1 << 5,
780 /*
781 * Cache compounds containing these ops in the xid-based drc:
782 * We use the DRC for compounds containing non-idempotent
783 * operations, *except* those that are 4.1-specific (since
784 * sessions provide their own EOS), and except for stateful
785 * operations other than setclientid and setclientid_confirm
786 * (since sequence numbers provide EOS for open, lock, etc in
787 * the v4.0 case).
788 */
789 OP_CACHEME = 1 << 6,
790 /*
791 * These are ops which clear current state id.
792 */
793 OP_CLEAR_STATEID = 1 << 7,
794 /* Most ops return only an error on failure; some may do more: */
795 OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8,
796 };
797
798 struct nfsd4_operation {
799 __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
800 union nfsd4_op_u *);
801 void (*op_release)(union nfsd4_op_u *);
802 u32 op_flags;
803 char *op_name;
804 /* Try to get response size before operation */
805 u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *);
806 void (*op_get_currentstateid)(struct nfsd4_compound_state *,
807 union nfsd4_op_u *);
808 void (*op_set_currentstateid)(struct nfsd4_compound_state *,
809 union nfsd4_op_u *);
810 };
811
812
813 #endif
814
815 /*
816 * Local variables:
817 * c-basic-offset: 8
818 * End:
819 */
820