2 * include/linux/nfsd/xdr4.h
4 * Server-side types for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #ifndef _LINUX_NFSD_XDR4_H
40 #define _LINUX_NFSD_XDR4_H
42 #include <linux/nfs4.h>
44 #define NFSD4_MAX_TAGLEN 128
45 #define XDR_LEN(n) (((n) + 3) & ~3)
47 struct nfsd4_compound_state {
48 struct svc_fh current_fh;
49 struct svc_fh save_fh;
50 struct nfs4_stateowner *replay_owner;
51 /* For sessions DRC */
52 struct nfsd4_session *session;
53 struct nfsd4_slot *slot;
59 static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
61 return cs->slot != NULL;
64 struct nfsd4_change_info {
67 u32 before_ctime_nsec;
73 u32 ac_req_access; /* request */
74 u32 ac_supported; /* response */
75 u32 ac_resp_access; /* response */
79 u32 cl_seqid; /* request */
80 stateid_t cl_stateid; /* request+response */
81 struct nfs4_stateowner * cl_stateowner; /* response */
85 u64 co_offset; /* request */
86 u32 co_count; /* request */
87 nfs4_verifier co_verf; /* response */
91 u32 cr_namelen; /* request */
92 char * cr_name; /* request */
93 u32 cr_type; /* request */
102 } dev; /* NF4BLK, NF4CHR */
104 u32 cr_bmval[2]; /* request */
105 struct iattr cr_iattr; /* request */
106 struct nfsd4_change_info cr_cinfo; /* response */
107 struct nfs4_acl *cr_acl;
109 #define cr_linklen u.link.namelen
110 #define cr_linkname u.link.name
111 #define cr_specdata1 u.dev.specdata1
112 #define cr_specdata2 u.dev.specdata2
114 struct nfsd4_delegreturn {
115 stateid_t dr_stateid;
118 struct nfsd4_getattr {
119 u32 ga_bmval[2]; /* request */
120 struct svc_fh *ga_fhp; /* response */
124 u32 li_namelen; /* request */
125 char * li_name; /* request */
126 struct nfsd4_change_info li_cinfo; /* response */
129 struct nfsd4_lock_denied {
130 clientid_t ld_clientid;
131 struct nfs4_stateowner *ld_sop;
140 u32 lk_reclaim; /* boolean */
147 stateid_t open_stateid;
150 struct xdr_netobj owner;
153 stateid_t lock_stateid;
163 struct nfsd4_lock_denied denied;
165 /* The lk_replay_owner is the open owner in the open_to_lock_owner
166 * case and the lock owner otherwise: */
167 struct nfs4_stateowner *lk_replay_owner;
169 #define lk_new_open_seqid v.new.open_seqid
170 #define lk_new_open_stateid v.new.open_stateid
171 #define lk_new_lock_seqid v.new.lock_seqid
172 #define lk_new_clientid v.new.clientid
173 #define lk_new_owner v.new.owner
174 #define lk_old_lock_stateid v.old.lock_stateid
175 #define lk_old_lock_seqid v.old.lock_seqid
177 #define lk_rflags u.ok.rflags
178 #define lk_resp_stateid u.ok.stateid
179 #define lk_denied u.denied
184 clientid_t lt_clientid;
185 struct xdr_netobj lt_owner;
188 struct nfs4_stateowner * lt_stateowner;
189 struct nfsd4_lock_denied lt_denied;
196 stateid_t lu_stateid;
199 struct nfs4_stateowner *lu_stateowner;
203 struct nfsd4_lookup {
204 u32 lo_len; /* request */
205 char * lo_name; /* request */
209 u32 pf_fhlen; /* request */
210 char *pf_fhval; /* request */
214 u32 op_claim_type; /* request */
215 struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
216 u32 op_delegate_type; /* request - CLAIM_PREV only */
217 stateid_t op_delegate_stateid; /* request - response */
218 u32 op_create; /* request */
219 u32 op_createmode; /* request */
220 u32 op_bmval[2]; /* request */
221 union { /* request */
222 struct iattr iattr; /* UNCHECKED4,GUARDED4 */
223 nfs4_verifier verf; /* EXCLUSIVE4 */
225 clientid_t op_clientid; /* request */
226 struct xdr_netobj op_owner; /* request */
227 u32 op_seqid; /* request */
228 u32 op_share_access; /* request */
229 u32 op_share_deny; /* request */
230 stateid_t op_stateid; /* response */
231 u32 op_recall; /* recall */
232 struct nfsd4_change_info op_cinfo; /* response */
233 u32 op_rflags; /* response */
234 int op_truncate; /* used during processing */
235 struct nfs4_stateowner *op_stateowner; /* used during processing */
236 struct nfs4_acl *op_acl;
238 #define op_iattr u.iattr
239 #define op_verf u.verf
241 struct nfsd4_open_confirm {
242 stateid_t oc_req_stateid /* request */;
243 u32 oc_seqid /* request */;
244 stateid_t oc_resp_stateid /* response */;
245 struct nfs4_stateowner * oc_stateowner; /* response */
248 struct nfsd4_open_downgrade {
249 stateid_t od_stateid;
253 struct nfs4_stateowner *od_stateowner;
258 stateid_t rd_stateid; /* request */
259 u64 rd_offset; /* request */
260 u32 rd_length; /* request */
262 struct file *rd_filp;
264 struct svc_rqst *rd_rqstp; /* response */
265 struct svc_fh * rd_fhp; /* response */
268 struct nfsd4_readdir {
269 u64 rd_cookie; /* request */
270 nfs4_verifier rd_verf; /* request */
271 u32 rd_dircount; /* request */
272 u32 rd_maxcount; /* request */
273 u32 rd_bmval[2]; /* request */
274 struct svc_rqst *rd_rqstp; /* response */
275 struct svc_fh * rd_fhp; /* response */
277 struct readdir_cd common;
283 struct nfsd4_release_lockowner {
284 clientid_t rl_clientid;
285 struct xdr_netobj rl_owner;
287 struct nfsd4_readlink {
288 struct svc_rqst *rl_rqstp; /* request */
289 struct svc_fh * rl_fhp; /* request */
292 struct nfsd4_remove {
293 u32 rm_namelen; /* request */
294 char * rm_name; /* request */
295 struct nfsd4_change_info rm_cinfo; /* response */
298 struct nfsd4_rename {
299 u32 rn_snamelen; /* request */
300 char * rn_sname; /* request */
301 u32 rn_tnamelen; /* request */
302 char * rn_tname; /* request */
303 struct nfsd4_change_info rn_sinfo; /* response */
304 struct nfsd4_change_info rn_tinfo; /* response */
307 struct nfsd4_secinfo {
308 u32 si_namelen; /* request */
309 char *si_name; /* request */
310 struct svc_export *si_exp; /* response */
313 struct nfsd4_setattr {
314 stateid_t sa_stateid; /* request */
315 u32 sa_bmval[2]; /* request */
316 struct iattr sa_iattr; /* request */
317 struct nfs4_acl *sa_acl;
320 struct nfsd4_setclientid {
321 nfs4_verifier se_verf; /* request */
322 u32 se_namelen; /* request */
323 char * se_name; /* request */
324 u32 se_callback_prog; /* request */
325 u32 se_callback_netid_len; /* request */
326 char * se_callback_netid_val; /* request */
327 u32 se_callback_addr_len; /* request */
328 char * se_callback_addr_val; /* request */
329 u32 se_callback_ident; /* request */
330 clientid_t se_clientid; /* response */
331 nfs4_verifier se_confirm; /* response */
334 struct nfsd4_setclientid_confirm {
335 clientid_t sc_clientid;
336 nfs4_verifier sc_confirm;
339 /* also used for NVERIFY */
340 struct nfsd4_verify {
341 u32 ve_bmval[2]; /* request */
342 u32 ve_attrlen; /* request */
343 char * ve_attrval; /* request */
347 stateid_t wr_stateid; /* request */
348 u64 wr_offset; /* request */
349 u32 wr_stable_how; /* request */
350 u32 wr_buflen; /* request */
353 u32 wr_bytes_written; /* response */
354 u32 wr_how_written; /* response */
355 nfs4_verifier wr_verifier; /* response */
358 struct nfsd4_exchange_id {
359 nfs4_verifier verifier;
360 struct xdr_netobj clname;
367 struct nfsd4_channel_attrs {
378 struct nfsd4_create_session {
380 struct nfs4_sessionid sessionid;
383 struct nfsd4_channel_attrs fore_channel;
384 struct nfsd4_channel_attrs back_channel;
390 struct nfsd4_sequence {
391 struct nfs4_sessionid sessionid; /* request/response */
392 u32 seqid; /* request/response */
393 u32 slotid; /* request/response */
394 u32 maxslots; /* request/response */
395 u32 cachethis; /* request */
397 u32 target_maxslots; /* response */
398 u32 status_flags; /* response */
402 struct nfsd4_destroy_session {
403 struct nfs4_sessionid sessionid;
410 struct nfsd4_access access;
411 struct nfsd4_close close;
412 struct nfsd4_commit commit;
413 struct nfsd4_create create;
414 struct nfsd4_delegreturn delegreturn;
415 struct nfsd4_getattr getattr;
416 struct svc_fh * getfh;
417 struct nfsd4_link link;
418 struct nfsd4_lock lock;
419 struct nfsd4_lockt lockt;
420 struct nfsd4_locku locku;
421 struct nfsd4_lookup lookup;
422 struct nfsd4_verify nverify;
423 struct nfsd4_open open;
424 struct nfsd4_open_confirm open_confirm;
425 struct nfsd4_open_downgrade open_downgrade;
426 struct nfsd4_putfh putfh;
427 struct nfsd4_read read;
428 struct nfsd4_readdir readdir;
429 struct nfsd4_readlink readlink;
430 struct nfsd4_remove remove;
431 struct nfsd4_rename rename;
433 struct nfsd4_secinfo secinfo;
434 struct nfsd4_setattr setattr;
435 struct nfsd4_setclientid setclientid;
436 struct nfsd4_setclientid_confirm setclientid_confirm;
437 struct nfsd4_verify verify;
438 struct nfsd4_write write;
439 struct nfsd4_release_lockowner release_lockowner;
442 struct nfsd4_exchange_id exchange_id;
443 struct nfsd4_create_session create_session;
444 struct nfsd4_destroy_session destroy_session;
445 struct nfsd4_sequence sequence;
447 struct nfs4_replay * replay;
450 struct nfsd4_compoundargs {
451 /* scratch variables for XDR decode */
454 struct page ** pagelist;
460 void (*release)(const void *);
464 struct svc_rqst *rqstp;
470 struct nfsd4_op *ops;
471 struct nfsd4_op iops[8];
474 struct nfsd4_compoundres {
475 /* scratch variables for XDR encode */
478 struct xdr_buf * xbuf;
479 struct svc_rqst * rqstp;
484 __be32 * tagp; /* tag, opcount encode location */
485 struct nfsd4_compound_state cstate;
488 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
490 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
491 return args->opcnt == 1;
494 static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
496 return !resp->cstate.slot->sl_cache_entry.ce_cachethis ||
497 nfsd4_is_solo_sequence(resp);
500 #define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
503 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
505 BUG_ON(!fhp->fh_pre_saved || !fhp->fh_post_saved);
507 cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
508 cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
509 cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
510 cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
513 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
514 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
515 struct nfsd4_compoundargs *);
516 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
517 struct nfsd4_compoundres *);
518 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
519 void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
520 __be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
521 struct dentry *dentry, __be32 *buffer, int *countp,
522 u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
523 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
524 struct nfsd4_compound_state *,
525 struct nfsd4_setclientid *setclid);
526 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
527 struct nfsd4_compound_state *,
528 struct nfsd4_setclientid_confirm *setclientid_confirm);
529 extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
530 extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
531 struct nfsd4_sequence *seq);
532 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
533 struct nfsd4_compound_state *,
534 struct nfsd4_exchange_id *);
535 extern __be32 nfsd4_create_session(struct svc_rqst *,
536 struct nfsd4_compound_state *,
537 struct nfsd4_create_session *);
538 extern __be32 nfsd4_sequence(struct svc_rqst *,
539 struct nfsd4_compound_state *,
540 struct nfsd4_sequence *);
541 extern __be32 nfsd4_destroy_session(struct svc_rqst *,
542 struct nfsd4_compound_state *,
543 struct nfsd4_destroy_session *);
544 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
545 struct nfsd4_open *open);
546 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
547 struct svc_fh *current_fh, struct nfsd4_open *open);
548 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
549 struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
550 extern __be32 nfsd4_close(struct svc_rqst *rqstp,
551 struct nfsd4_compound_state *,
552 struct nfsd4_close *close);
553 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
554 struct nfsd4_compound_state *,
555 struct nfsd4_open_downgrade *od);
556 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
557 struct nfsd4_lock *lock);
558 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
559 struct nfsd4_compound_state *,
560 struct nfsd4_lockt *lockt);
561 extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
562 struct nfsd4_compound_state *,
563 struct nfsd4_locku *locku);
565 nfsd4_release_lockowner(struct svc_rqst *rqstp,
566 struct nfsd4_compound_state *,
567 struct nfsd4_release_lockowner *rlockowner);
568 extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
569 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
570 struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
571 extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
572 struct nfsd4_compound_state *, clientid_t *clid);