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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_CSTATE_FLAG(c, f) ((c)->sid_flags |= (f))
50#define HAS_CSTATE_FLAG(c, f) ((c)->sid_flags & (f))
51#define CLEAR_CSTATE_FLAG(c, f) ((c)->sid_flags &= ~(f))
52
53/**
54 * nfsd4_encode_bool - Encode an XDR bool type result
55 * @xdr: target XDR stream
56 * @val: boolean value to encode
57 *
58 * Return values:
59 * %nfs_ok: @val encoded; @xdr advanced to next position
60 * %nfserr_resource: stream buffer space exhausted
61 */
62static __always_inline __be32
63nfsd4_encode_bool(struct xdr_stream *xdr, bool val)
64{
65 __be32 *p = xdr_reserve_space(xdr, XDR_UNIT);
66
67 if (unlikely(p == NULL))
68 return nfserr_resource;
69 *p = val ? xdr_one : xdr_zero;
70 return nfs_ok;
71}
72
73/**
74 * nfsd4_encode_uint32_t - Encode an XDR uint32_t type result
75 * @xdr: target XDR stream
76 * @val: integer value to encode
77 *
78 * Return values:
79 * %nfs_ok: @val encoded; @xdr advanced to next position
80 * %nfserr_resource: stream buffer space exhausted
81 */
82static __always_inline __be32
83nfsd4_encode_uint32_t(struct xdr_stream *xdr, u32 val)
84{
85 __be32 *p = xdr_reserve_space(xdr, XDR_UNIT);
86
87 if (unlikely(p == NULL))
88 return nfserr_resource;
89 *p = cpu_to_be32(val);
90 return nfs_ok;
91}
92
93#define nfsd4_encode_aceflag4(x, v) nfsd4_encode_uint32_t(x, v)
94#define nfsd4_encode_acemask4(x, v) nfsd4_encode_uint32_t(x, v)
95#define nfsd4_encode_acetype4(x, v) nfsd4_encode_uint32_t(x, v)
96#define nfsd4_encode_count4(x, v) nfsd4_encode_uint32_t(x, v)
97#define nfsd4_encode_mode4(x, v) nfsd4_encode_uint32_t(x, v)
98#define nfsd4_encode_nfs_lease4(x, v) nfsd4_encode_uint32_t(x, v)
99#define nfsd4_encode_qop4(x, v) nfsd4_encode_uint32_t(x, v)
100#define nfsd4_encode_sequenceid4(x, v) nfsd4_encode_uint32_t(x, v)
101#define nfsd4_encode_slotid4(x, v) nfsd4_encode_uint32_t(x, v)
102
103/**
104 * nfsd4_encode_uint64_t - Encode an XDR uint64_t type result
105 * @xdr: target XDR stream
106 * @val: integer value to encode
107 *
108 * Return values:
109 * %nfs_ok: @val encoded; @xdr advanced to next position
110 * %nfserr_resource: stream buffer space exhausted
111 */
112static __always_inline __be32
113nfsd4_encode_uint64_t(struct xdr_stream *xdr, u64 val)
114{
115 __be32 *p = xdr_reserve_space(xdr, XDR_UNIT * 2);
116
117 if (unlikely(p == NULL))
118 return nfserr_resource;
119 put_unaligned_be64(val, p);
120 return nfs_ok;
121}
122
123#define nfsd4_encode_changeid4(x, v) nfsd4_encode_uint64_t(x, v)
124#define nfsd4_encode_nfs_cookie4(x, v) nfsd4_encode_uint64_t(x, v)
125#define nfsd4_encode_length4(x, v) nfsd4_encode_uint64_t(x, v)
126#define nfsd4_encode_offset4(x, v) nfsd4_encode_uint64_t(x, v)
127
128/**
129 * nfsd4_encode_opaque_fixed - Encode a fixed-length XDR opaque type result
130 * @xdr: target XDR stream
131 * @data: pointer to data
132 * @size: length of data in bytes
133 *
134 * Return values:
135 * %nfs_ok: @data encoded; @xdr advanced to next position
136 * %nfserr_resource: stream buffer space exhausted
137 */
138static __always_inline __be32
139nfsd4_encode_opaque_fixed(struct xdr_stream *xdr, const void *data,
140 size_t size)
141{
142 __be32 *p = xdr_reserve_space(xdr, xdr_align_size(size));
143 size_t pad = xdr_pad_size(size);
144
145 if (unlikely(p == NULL))
146 return nfserr_resource;
147 memcpy(p, data, size);
148 if (pad)
149 memset((char *)p + size, 0, pad);
150 return nfs_ok;
151}
152
153/**
154 * nfsd4_encode_opaque - Encode a variable-length XDR opaque type result
155 * @xdr: target XDR stream
156 * @data: pointer to data
157 * @size: length of data in bytes
158 *
159 * Return values:
160 * %nfs_ok: @data encoded; @xdr advanced to next position
161 * %nfserr_resource: stream buffer space exhausted
162 */
163static __always_inline __be32
164nfsd4_encode_opaque(struct xdr_stream *xdr, const void *data, size_t size)
165{
166 size_t pad = xdr_pad_size(size);
167 __be32 *p;
168
169 p = xdr_reserve_space(xdr, XDR_UNIT + xdr_align_size(size));
170 if (unlikely(p == NULL))
171 return nfserr_resource;
172 *p++ = cpu_to_be32(size);
173 memcpy(p, data, size);
174 if (pad)
175 memset((char *)p + size, 0, pad);
176 return nfs_ok;
177}
178
179#define nfsd4_encode_component4(x, d, s) nfsd4_encode_opaque(x, d, s)
180
181struct nfsd4_compound_state {
182 struct svc_fh current_fh;
183 struct svc_fh save_fh;
184 struct nfs4_stateowner *replay_owner;
185 struct nfs4_client *clp;
186 /* For sessions DRC */
187 struct nfsd4_session *session;
188 struct nfsd4_slot *slot;
189 int data_offset;
190 bool spo_must_allowed;
191 size_t iovlen;
192 u32 minorversion;
193 __be32 status;
194 stateid_t current_stateid;
195 stateid_t save_stateid;
196 /* to indicate current and saved state id presents */
197 u32 sid_flags;
198};
199
200static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
201{
202 return cs->slot != NULL;
203}
204
205struct nfsd4_change_info {
206 u32 atomic;
207 u64 before_change;
208 u64 after_change;
209};
210
211struct nfsd4_access {
212 u32 ac_req_access; /* request */
213 u32 ac_supported; /* response */
214 u32 ac_resp_access; /* response */
215};
216
217struct nfsd4_close {
218 u32 cl_seqid; /* request */
219 stateid_t cl_stateid; /* request+response */
220};
221
222struct nfsd4_commit {
223 u64 co_offset; /* request */
224 u32 co_count; /* request */
225 nfs4_verifier co_verf; /* response */
226};
227
228struct nfsd4_create {
229 u32 cr_namelen; /* request */
230 char * cr_name; /* request */
231 u32 cr_type; /* request */
232 union { /* request */
233 struct {
234 u32 datalen;
235 char *data;
236 struct kvec first;
237 } link; /* NF4LNK */
238 struct {
239 u32 specdata1;
240 u32 specdata2;
241 } dev; /* NF4BLK, NF4CHR */
242 } u;
243 u32 cr_bmval[3]; /* request */
244 struct iattr cr_iattr; /* request */
245 int cr_umask; /* request */
246 struct nfsd4_change_info cr_cinfo; /* response */
247 struct nfs4_acl *cr_acl;
248 struct xdr_netobj cr_label;
249};
250#define cr_datalen u.link.datalen
251#define cr_data u.link.data
252#define cr_first u.link.first
253#define cr_specdata1 u.dev.specdata1
254#define cr_specdata2 u.dev.specdata2
255
256struct nfsd4_delegreturn {
257 stateid_t dr_stateid;
258};
259
260struct nfsd4_getattr {
261 u32 ga_bmval[3]; /* request */
262 struct svc_fh *ga_fhp; /* response */
263};
264
265struct nfsd4_link {
266 u32 li_namelen; /* request */
267 char * li_name; /* request */
268 struct nfsd4_change_info li_cinfo; /* response */
269};
270
271struct nfsd4_lock_denied {
272 clientid_t ld_clientid;
273 struct xdr_netobj ld_owner;
274 u64 ld_start;
275 u64 ld_length;
276 u32 ld_type;
277};
278
279struct nfsd4_lock {
280 /* request */
281 u32 lk_type;
282 u32 lk_reclaim; /* boolean */
283 u64 lk_offset;
284 u64 lk_length;
285 u32 lk_is_new;
286 union {
287 struct {
288 u32 open_seqid;
289 stateid_t open_stateid;
290 u32 lock_seqid;
291 clientid_t clientid;
292 struct xdr_netobj owner;
293 } new;
294 struct {
295 stateid_t lock_stateid;
296 u32 lock_seqid;
297 } old;
298 } v;
299
300 /* response */
301 stateid_t lk_resp_stateid;
302 struct nfsd4_lock_denied lk_denied;
303};
304#define lk_new_open_seqid v.new.open_seqid
305#define lk_new_open_stateid v.new.open_stateid
306#define lk_new_lock_seqid v.new.lock_seqid
307#define lk_new_clientid v.new.clientid
308#define lk_new_owner v.new.owner
309#define lk_old_lock_stateid v.old.lock_stateid
310#define lk_old_lock_seqid v.old.lock_seqid
311
312struct nfsd4_lockt {
313 u32 lt_type;
314 clientid_t lt_clientid;
315 struct xdr_netobj lt_owner;
316 u64 lt_offset;
317 u64 lt_length;
318 struct nfsd4_lock_denied lt_denied;
319};
320
321struct nfsd4_locku {
322 u32 lu_type;
323 u32 lu_seqid;
324 stateid_t lu_stateid;
325 u64 lu_offset;
326 u64 lu_length;
327};
328
329
330struct nfsd4_lookup {
331 u32 lo_len; /* request */
332 char * lo_name; /* request */
333};
334
335struct nfsd4_putfh {
336 u32 pf_fhlen; /* request */
337 char *pf_fhval; /* request */
338 bool no_verify; /* represents foreigh fh */
339};
340
341struct nfsd4_getxattr {
342 char *getxa_name; /* request */
343 u32 getxa_len; /* request */
344 void *getxa_buf;
345};
346
347struct nfsd4_setxattr {
348 u32 setxa_flags; /* request */
349 char *setxa_name; /* request */
350 char *setxa_buf; /* request */
351 u32 setxa_len; /* request */
352 struct nfsd4_change_info setxa_cinfo; /* response */
353};
354
355struct nfsd4_removexattr {
356 char *rmxa_name; /* request */
357 struct nfsd4_change_info rmxa_cinfo; /* response */
358};
359
360struct nfsd4_listxattrs {
361 u64 lsxa_cookie; /* request */
362 u32 lsxa_maxcount; /* request */
363 char *lsxa_buf; /* unfiltered buffer (reply) */
364 u32 lsxa_len; /* unfiltered len (reply) */
365};
366
367struct nfsd4_open {
368 u32 op_claim_type; /* request */
369 u32 op_fnamelen;
370 char * op_fname; /* request - everything but CLAIM_PREV */
371 u32 op_delegate_type; /* request - CLAIM_PREV only */
372 stateid_t op_delegate_stateid; /* request - response */
373 u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */
374 u32 op_create; /* request */
375 u32 op_createmode; /* request */
376 int op_umask; /* request */
377 u32 op_bmval[3]; /* request */
378 struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
379 nfs4_verifier op_verf __attribute__((aligned(32)));
380 /* EXCLUSIVE4 */
381 clientid_t op_clientid; /* request */
382 struct xdr_netobj op_owner; /* request */
383 u32 op_seqid; /* request */
384 u32 op_share_access; /* request */
385 u32 op_share_deny; /* request */
386 u32 op_deleg_want; /* request */
387 stateid_t op_stateid; /* response */
388 __be32 op_xdr_error; /* see nfsd4_open_omfg() */
389 struct nfsd4_change_info op_cinfo; /* response */
390 u32 op_rflags; /* response */
391 bool op_recall; /* response */
392 bool op_truncate; /* used during processing */
393 bool op_created; /* used during processing */
394 struct nfs4_openowner *op_openowner; /* used during processing */
395 struct file *op_filp; /* used during processing */
396 struct nfs4_file *op_file; /* used during processing */
397 struct nfs4_ol_stateid *op_stp; /* used during processing */
398 struct nfs4_clnt_odstate *op_odstate; /* used during processing */
399 struct nfs4_acl *op_acl;
400 struct xdr_netobj op_label;
401 struct svc_rqst *op_rqstp;
402};
403
404struct nfsd4_open_confirm {
405 stateid_t oc_req_stateid /* request */;
406 u32 oc_seqid /* request */;
407 stateid_t oc_resp_stateid /* response */;
408};
409
410struct nfsd4_open_downgrade {
411 stateid_t od_stateid;
412 u32 od_seqid;
413 u32 od_share_access; /* request */
414 u32 od_deleg_want; /* request */
415 u32 od_share_deny; /* request */
416};
417
418
419struct nfsd4_read {
420 stateid_t rd_stateid; /* request */
421 u64 rd_offset; /* request */
422 u32 rd_length; /* request */
423 int rd_vlen;
424 struct nfsd_file *rd_nf;
425
426 struct svc_rqst *rd_rqstp; /* response */
427 struct svc_fh *rd_fhp; /* response */
428 u32 rd_eof; /* response */
429};
430
431struct nfsd4_readdir {
432 u64 rd_cookie; /* request */
433 nfs4_verifier rd_verf; /* request */
434 u32 rd_dircount; /* request */
435 u32 rd_maxcount; /* request */
436 u32 rd_bmval[3]; /* request */
437 struct svc_rqst *rd_rqstp; /* response */
438 struct svc_fh * rd_fhp; /* response */
439
440 struct readdir_cd common;
441 struct xdr_stream *xdr;
442 int cookie_offset;
443};
444
445struct nfsd4_release_lockowner {
446 clientid_t rl_clientid;
447 struct xdr_netobj rl_owner;
448};
449struct nfsd4_readlink {
450 struct svc_rqst *rl_rqstp; /* request */
451 struct svc_fh * rl_fhp; /* request */
452};
453
454struct nfsd4_remove {
455 u32 rm_namelen; /* request */
456 char * rm_name; /* request */
457 struct nfsd4_change_info rm_cinfo; /* response */
458};
459
460struct nfsd4_rename {
461 u32 rn_snamelen; /* request */
462 char * rn_sname; /* request */
463 u32 rn_tnamelen; /* request */
464 char * rn_tname; /* request */
465 struct nfsd4_change_info rn_sinfo; /* response */
466 struct nfsd4_change_info rn_tinfo; /* response */
467};
468
469struct nfsd4_secinfo {
470 u32 si_namelen; /* request */
471 char *si_name; /* request */
472 struct svc_export *si_exp; /* response */
473};
474
475struct nfsd4_secinfo_no_name {
476 u32 sin_style; /* request */
477 struct svc_export *sin_exp; /* response */
478};
479
480struct nfsd4_setattr {
481 stateid_t sa_stateid; /* request */
482 u32 sa_bmval[3]; /* request */
483 struct iattr sa_iattr; /* request */
484 struct nfs4_acl *sa_acl;
485 struct xdr_netobj sa_label;
486};
487
488struct nfsd4_setclientid {
489 nfs4_verifier se_verf; /* request */
490 struct xdr_netobj se_name;
491 u32 se_callback_prog; /* request */
492 u32 se_callback_netid_len; /* request */
493 char * se_callback_netid_val; /* request */
494 u32 se_callback_addr_len; /* request */
495 char * se_callback_addr_val; /* request */
496 u32 se_callback_ident; /* request */
497 clientid_t se_clientid; /* response */
498 nfs4_verifier se_confirm; /* response */
499};
500
501struct nfsd4_setclientid_confirm {
502 clientid_t sc_clientid;
503 nfs4_verifier sc_confirm;
504};
505
506struct nfsd4_test_stateid_id {
507 __be32 ts_id_status;
508 stateid_t ts_id_stateid;
509 struct list_head ts_id_list;
510};
511
512struct nfsd4_test_stateid {
513 u32 ts_num_ids;
514 struct list_head ts_stateid_list;
515};
516
517struct nfsd4_free_stateid {
518 stateid_t fr_stateid; /* request */
519};
520
521/* also used for NVERIFY */
522struct nfsd4_verify {
523 u32 ve_bmval[3]; /* request */
524 u32 ve_attrlen; /* request */
525 char * ve_attrval; /* request */
526};
527
528struct nfsd4_write {
529 stateid_t wr_stateid; /* request */
530 u64 wr_offset; /* request */
531 u32 wr_stable_how; /* request */
532 u32 wr_buflen; /* request */
533 struct xdr_buf wr_payload; /* request */
534
535 u32 wr_bytes_written; /* response */
536 u32 wr_how_written; /* response */
537 nfs4_verifier wr_verifier; /* response */
538};
539
540struct nfsd4_exchange_id {
541 nfs4_verifier verifier;
542 struct xdr_netobj clname;
543 u32 flags;
544 clientid_t clientid;
545 u32 seqid;
546 u32 spa_how;
547 u32 spo_must_enforce[3];
548 u32 spo_must_allow[3];
549 struct xdr_netobj nii_domain;
550 struct xdr_netobj nii_name;
551 struct timespec64 nii_time;
552};
553
554struct nfsd4_sequence {
555 struct nfs4_sessionid sessionid; /* request/response */
556 u32 seqid; /* request/response */
557 u32 slotid; /* request/response */
558 u32 maxslots; /* request/response */
559 u32 cachethis; /* request */
560#if 0
561 u32 target_maxslots; /* response */
562#endif /* not yet */
563 u32 status_flags; /* response */
564};
565
566struct nfsd4_destroy_session {
567 struct nfs4_sessionid sessionid;
568};
569
570struct nfsd4_destroy_clientid {
571 clientid_t clientid;
572};
573
574struct nfsd4_reclaim_complete {
575 u32 rca_one_fs;
576};
577
578struct nfsd4_deviceid {
579 u64 fsid_idx;
580 u32 generation;
581 u32 pad;
582};
583
584struct nfsd4_layout_seg {
585 u32 iomode;
586 u64 offset;
587 u64 length;
588};
589
590struct nfsd4_getdeviceinfo {
591 struct nfsd4_deviceid gd_devid; /* request */
592 u32 gd_layout_type; /* request */
593 u32 gd_maxcount; /* request */
594 u32 gd_notify_types;/* request - response */
595 void *gd_device; /* response */
596};
597
598struct nfsd4_layoutget {
599 u64 lg_minlength; /* request */
600 u32 lg_signal; /* request */
601 u32 lg_layout_type; /* request */
602 u32 lg_maxcount; /* request */
603 stateid_t lg_sid; /* request/response */
604 struct nfsd4_layout_seg lg_seg; /* request/response */
605 void *lg_content; /* response */
606};
607
608struct nfsd4_layoutcommit {
609 stateid_t lc_sid; /* request */
610 struct nfsd4_layout_seg lc_seg; /* request */
611 u32 lc_reclaim; /* request */
612 u32 lc_newoffset; /* request */
613 u64 lc_last_wr; /* request */
614 struct timespec64 lc_mtime; /* request */
615 u32 lc_layout_type; /* request */
616 u32 lc_up_len; /* layout length */
617 void *lc_up_layout; /* decoded by callback */
618 bool lc_size_chg; /* response */
619 u64 lc_newsize; /* response */
620};
621
622struct nfsd4_layoutreturn {
623 u32 lr_return_type; /* request */
624 u32 lr_layout_type; /* request */
625 struct nfsd4_layout_seg lr_seg; /* request */
626 u32 lr_reclaim; /* request */
627 u32 lrf_body_len; /* request */
628 void *lrf_body; /* request */
629 stateid_t lr_sid; /* request/response */
630 bool lrs_present; /* response */
631};
632
633struct nfsd4_fallocate {
634 /* request */
635 stateid_t falloc_stateid;
636 loff_t falloc_offset;
637 u64 falloc_length;
638};
639
640struct nfsd4_clone {
641 /* request */
642 stateid_t cl_src_stateid;
643 stateid_t cl_dst_stateid;
644 u64 cl_src_pos;
645 u64 cl_dst_pos;
646 u64 cl_count;
647};
648
649struct nfsd42_write_res {
650 u64 wr_bytes_written;
651 u32 wr_stable_how;
652 nfs4_verifier wr_verifier;
653 stateid_t cb_stateid;
654};
655
656struct nfsd4_cb_offload {
657 struct nfsd4_callback co_cb;
658 struct nfsd42_write_res co_res;
659 __be32 co_nfserr;
660 struct knfsd_fh co_fh;
661};
662
663struct nfsd4_copy {
664 /* request */
665 stateid_t cp_src_stateid;
666 stateid_t cp_dst_stateid;
667 u64 cp_src_pos;
668 u64 cp_dst_pos;
669 u64 cp_count;
670 struct nl4_server *cp_src;
671
672 unsigned long cp_flags;
673#define NFSD4_COPY_F_STOPPED (0)
674#define NFSD4_COPY_F_INTRA (1)
675#define NFSD4_COPY_F_SYNCHRONOUS (2)
676#define NFSD4_COPY_F_COMMITTED (3)
677
678 /* response */
679 struct nfsd42_write_res cp_res;
680 struct knfsd_fh fh;
681
682 struct nfs4_client *cp_clp;
683
684 struct nfsd_file *nf_src;
685 struct nfsd_file *nf_dst;
686
687 copy_stateid_t cp_stateid;
688
689 struct list_head copies;
690 struct task_struct *copy_task;
691 refcount_t refcount;
692
693 struct nfsd4_ssc_umount_item *ss_nsui;
694 struct nfs_fh c_fh;
695 nfs4_stateid stateid;
696};
697
698static inline void nfsd4_copy_set_sync(struct nfsd4_copy *copy, bool sync)
699{
700 if (sync)
701 set_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
702 else
703 clear_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
704}
705
706static inline bool nfsd4_copy_is_sync(const struct nfsd4_copy *copy)
707{
708 return test_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
709}
710
711static inline bool nfsd4_copy_is_async(const struct nfsd4_copy *copy)
712{
713 return !test_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
714}
715
716static inline bool nfsd4_ssc_is_inter(const struct nfsd4_copy *copy)
717{
718 return !test_bit(NFSD4_COPY_F_INTRA, ©->cp_flags);
719}
720
721struct nfsd4_seek {
722 /* request */
723 stateid_t seek_stateid;
724 loff_t seek_offset;
725 u32 seek_whence;
726
727 /* response */
728 u32 seek_eof;
729 loff_t seek_pos;
730};
731
732struct nfsd4_offload_status {
733 /* request */
734 stateid_t stateid;
735
736 /* response */
737 u64 count;
738 u32 status;
739};
740
741struct nfsd4_copy_notify {
742 /* request */
743 stateid_t cpn_src_stateid;
744 struct nl4_server *cpn_dst;
745
746 /* response */
747 stateid_t cpn_cnr_stateid;
748 struct timespec64 cpn_lease_time;
749 struct nl4_server *cpn_src;
750};
751
752struct nfsd4_op {
753 u32 opnum;
754 __be32 status;
755 const struct nfsd4_operation *opdesc;
756 struct nfs4_replay *replay;
757 union nfsd4_op_u {
758 struct nfsd4_access access;
759 struct nfsd4_close close;
760 struct nfsd4_commit commit;
761 struct nfsd4_create create;
762 struct nfsd4_delegreturn delegreturn;
763 struct nfsd4_getattr getattr;
764 struct svc_fh * getfh;
765 struct nfsd4_link link;
766 struct nfsd4_lock lock;
767 struct nfsd4_lockt lockt;
768 struct nfsd4_locku locku;
769 struct nfsd4_lookup lookup;
770 struct nfsd4_verify nverify;
771 struct nfsd4_open open;
772 struct nfsd4_open_confirm open_confirm;
773 struct nfsd4_open_downgrade open_downgrade;
774 struct nfsd4_putfh putfh;
775 struct nfsd4_read read;
776 struct nfsd4_readdir readdir;
777 struct nfsd4_readlink readlink;
778 struct nfsd4_remove remove;
779 struct nfsd4_rename rename;
780 clientid_t renew;
781 struct nfsd4_secinfo secinfo;
782 struct nfsd4_setattr setattr;
783 struct nfsd4_setclientid setclientid;
784 struct nfsd4_setclientid_confirm setclientid_confirm;
785 struct nfsd4_verify verify;
786 struct nfsd4_write write;
787 struct nfsd4_release_lockowner release_lockowner;
788
789 /* NFSv4.1 */
790 struct nfsd4_exchange_id exchange_id;
791 struct nfsd4_backchannel_ctl backchannel_ctl;
792 struct nfsd4_bind_conn_to_session bind_conn_to_session;
793 struct nfsd4_create_session create_session;
794 struct nfsd4_destroy_session destroy_session;
795 struct nfsd4_destroy_clientid destroy_clientid;
796 struct nfsd4_sequence sequence;
797 struct nfsd4_reclaim_complete reclaim_complete;
798 struct nfsd4_test_stateid test_stateid;
799 struct nfsd4_free_stateid free_stateid;
800 struct nfsd4_getdeviceinfo getdeviceinfo;
801 struct nfsd4_layoutget layoutget;
802 struct nfsd4_layoutcommit layoutcommit;
803 struct nfsd4_layoutreturn layoutreturn;
804 struct nfsd4_secinfo_no_name secinfo_no_name;
805
806 /* NFSv4.2 */
807 struct nfsd4_fallocate allocate;
808 struct nfsd4_fallocate deallocate;
809 struct nfsd4_clone clone;
810 struct nfsd4_copy copy;
811 struct nfsd4_offload_status offload_status;
812 struct nfsd4_copy_notify copy_notify;
813 struct nfsd4_seek seek;
814
815 struct nfsd4_getxattr getxattr;
816 struct nfsd4_setxattr setxattr;
817 struct nfsd4_listxattrs listxattrs;
818 struct nfsd4_removexattr removexattr;
819 } u;
820};
821
822bool nfsd4_cache_this_op(struct nfsd4_op *);
823
824/*
825 * Memory needed just for the duration of processing one compound:
826 */
827struct svcxdr_tmpbuf {
828 struct svcxdr_tmpbuf *next;
829 char buf[];
830};
831
832struct nfsd4_compoundargs {
833 /* scratch variables for XDR decode */
834 struct xdr_stream *xdr;
835 struct svcxdr_tmpbuf *to_free;
836 struct svc_rqst *rqstp;
837
838 char * tag;
839 u32 taglen;
840 u32 minorversion;
841 u32 client_opcnt;
842 u32 opcnt;
843 bool splice_ok;
844 struct nfsd4_op *ops;
845 struct nfsd4_op iops[8];
846};
847
848struct nfsd4_compoundres {
849 /* scratch variables for XDR encode */
850 struct xdr_stream *xdr;
851 struct svc_rqst * rqstp;
852
853 __be32 *statusp;
854 char * tag;
855 u32 taglen;
856 u32 opcnt;
857
858 struct nfsd4_compound_state cstate;
859};
860
861static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
862{
863 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
864 return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
865}
866
867/*
868 * The session reply cache only needs to cache replies that the client
869 * actually asked us to. But it's almost free for us to cache compounds
870 * consisting of only a SEQUENCE op, so we may as well cache those too.
871 * Also, the protocol doesn't give us a convenient response in the case
872 * of a replay of a solo SEQUENCE op that wasn't cached
873 * (RETRY_UNCACHED_REP can only be returned in the second op of a
874 * compound).
875 */
876static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp)
877{
878 return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
879 || nfsd4_is_solo_sequence(resp);
880}
881
882static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
883{
884 struct nfsd4_compoundres *resp = rqstp->rq_resp;
885 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
886
887 return argp->opcnt == resp->opcnt;
888}
889
890const struct nfsd4_operation *OPDESC(struct nfsd4_op *op);
891int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
892void warn_on_nonidempotent_op(struct nfsd4_op *op);
893
894#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
895
896bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
897bool nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
898bool nfs4svc_encode_compoundres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
899__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
900void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
901void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
902__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
903 struct svc_fh *fhp, struct svc_export *exp,
904 struct dentry *dentry,
905 u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
906extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
907 struct nfsd4_compound_state *, union nfsd4_op_u *u);
908extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
909 struct nfsd4_compound_state *, union nfsd4_op_u *u);
910extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
911 struct nfsd4_compound_state *, union nfsd4_op_u *u);
912extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *,
913 struct nfsd4_compound_state *, union nfsd4_op_u *u);
914extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *,
915 struct nfsd4_compound_state *, union nfsd4_op_u *u);
916extern __be32 nfsd4_create_session(struct svc_rqst *,
917 struct nfsd4_compound_state *, union nfsd4_op_u *u);
918extern __be32 nfsd4_sequence(struct svc_rqst *,
919 struct nfsd4_compound_state *, union nfsd4_op_u *u);
920extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
921extern __be32 nfsd4_destroy_session(struct svc_rqst *,
922 struct nfsd4_compound_state *, union nfsd4_op_u *u);
923extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *,
924 union nfsd4_op_u *u);
925__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *,
926 union nfsd4_op_u *u);
927extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
928 struct nfsd4_open *open, struct nfsd_net *nn);
929extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
930 struct svc_fh *current_fh, struct nfsd4_open *open);
931extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
932extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
933 struct nfsd4_open *open);
934extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
935 struct nfsd4_compound_state *, union nfsd4_op_u *u);
936extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
937 union nfsd4_op_u *u);
938extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
939 struct nfsd4_compound_state *, union nfsd4_op_u *u);
940extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
941 union nfsd4_op_u *u);
942extern void nfsd4_lock_release(union nfsd4_op_u *u);
943extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
944 union nfsd4_op_u *u);
945extern void nfsd4_lockt_release(union nfsd4_op_u *u);
946extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
947 union nfsd4_op_u *u);
948extern __be32
949nfsd4_release_lockowner(struct svc_rqst *rqstp,
950 struct nfsd4_compound_state *, union nfsd4_op_u *u);
951extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp);
952extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
953 struct nfsd4_compound_state *, union nfsd4_op_u *u);
954extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
955 union nfsd4_op_u *u);
956extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
957 struct nfsd4_compound_state *, union nfsd4_op_u *);
958extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
959 struct nfsd4_compound_state *, union nfsd4_op_u *);
960extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
961
962enum nfsd4_op_flags {
963 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
964 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
965 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
966 /* For rfc 5661 section 2.6.3.1.1: */
967 OP_HANDLES_WRONGSEC = 1 << 3,
968 OP_IS_PUTFH_LIKE = 1 << 4,
969 /*
970 * These are the ops whose result size we estimate before
971 * encoding, to avoid performing an op then not being able to
972 * respond or cache a response. This includes writes and setattrs
973 * as well as the operations usually called "nonidempotent":
974 */
975 OP_MODIFIES_SOMETHING = 1 << 5,
976 /*
977 * Cache compounds containing these ops in the xid-based drc:
978 * We use the DRC for compounds containing non-idempotent
979 * operations, *except* those that are 4.1-specific (since
980 * sessions provide their own EOS), and except for stateful
981 * operations other than setclientid and setclientid_confirm
982 * (since sequence numbers provide EOS for open, lock, etc in
983 * the v4.0 case).
984 */
985 OP_CACHEME = 1 << 6,
986 /*
987 * These are ops which clear current state id.
988 */
989 OP_CLEAR_STATEID = 1 << 7,
990 /* Most ops return only an error on failure; some may do more: */
991 OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8,
992};
993
994struct nfsd4_operation {
995 __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
996 union nfsd4_op_u *);
997 void (*op_release)(union nfsd4_op_u *);
998 u32 op_flags;
999 char *op_name;
1000 /* Try to get response size before operation */
1001 u32 (*op_rsize_bop)(const struct svc_rqst *rqstp,
1002 const struct nfsd4_op *op);
1003 void (*op_get_currentstateid)(struct nfsd4_compound_state *,
1004 union nfsd4_op_u *);
1005 void (*op_set_currentstateid)(struct nfsd4_compound_state *,
1006 union nfsd4_op_u *);
1007};
1008
1009struct nfsd4_cb_recall_any {
1010 struct nfsd4_callback ra_cb;
1011 u32 ra_keep;
1012 u32 ra_bmval[1];
1013};
1014
1015#endif
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_CSTATE_FLAG(c, f) ((c)->sid_flags |= (f))
50#define HAS_CSTATE_FLAG(c, f) ((c)->sid_flags & (f))
51#define CLEAR_CSTATE_FLAG(c, f) ((c)->sid_flags &= ~(f))
52
53struct 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
72static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
73{
74 return cs->slot != NULL;
75}
76
77struct nfsd4_change_info {
78 u32 atomic;
79 u64 before_change;
80 u64 after_change;
81};
82
83struct nfsd4_access {
84 u32 ac_req_access; /* request */
85 u32 ac_supported; /* response */
86 u32 ac_resp_access; /* response */
87};
88
89struct nfsd4_close {
90 u32 cl_seqid; /* request */
91 stateid_t cl_stateid; /* request+response */
92};
93
94struct nfsd4_commit {
95 u64 co_offset; /* request */
96 u32 co_count; /* request */
97 nfs4_verifier co_verf; /* response */
98};
99
100struct nfsd4_create {
101 u32 cr_namelen; /* request */
102 char * cr_name; /* request */
103 u32 cr_type; /* request */
104 union { /* request */
105 struct {
106 u32 datalen;
107 char *data;
108 struct kvec first;
109 } link; /* NF4LNK */
110 struct {
111 u32 specdata1;
112 u32 specdata2;
113 } dev; /* NF4BLK, NF4CHR */
114 } u;
115 u32 cr_bmval[3]; /* request */
116 struct iattr cr_iattr; /* request */
117 int cr_umask; /* request */
118 struct nfsd4_change_info cr_cinfo; /* response */
119 struct nfs4_acl *cr_acl;
120 struct xdr_netobj cr_label;
121};
122#define cr_datalen u.link.datalen
123#define cr_data u.link.data
124#define cr_first u.link.first
125#define cr_specdata1 u.dev.specdata1
126#define cr_specdata2 u.dev.specdata2
127
128struct nfsd4_delegreturn {
129 stateid_t dr_stateid;
130};
131
132struct nfsd4_getattr {
133 u32 ga_bmval[3]; /* request */
134 struct svc_fh *ga_fhp; /* response */
135};
136
137struct nfsd4_link {
138 u32 li_namelen; /* request */
139 char * li_name; /* request */
140 struct nfsd4_change_info li_cinfo; /* response */
141};
142
143struct nfsd4_lock_denied {
144 clientid_t ld_clientid;
145 struct xdr_netobj ld_owner;
146 u64 ld_start;
147 u64 ld_length;
148 u32 ld_type;
149};
150
151struct nfsd4_lock {
152 /* request */
153 u32 lk_type;
154 u32 lk_reclaim; /* boolean */
155 u64 lk_offset;
156 u64 lk_length;
157 u32 lk_is_new;
158 union {
159 struct {
160 u32 open_seqid;
161 stateid_t open_stateid;
162 u32 lock_seqid;
163 clientid_t clientid;
164 struct xdr_netobj owner;
165 } new;
166 struct {
167 stateid_t lock_stateid;
168 u32 lock_seqid;
169 } old;
170 } v;
171
172 /* response */
173 union {
174 struct {
175 stateid_t stateid;
176 } ok;
177 struct nfsd4_lock_denied denied;
178 } u;
179};
180#define lk_new_open_seqid v.new.open_seqid
181#define lk_new_open_stateid v.new.open_stateid
182#define lk_new_lock_seqid v.new.lock_seqid
183#define lk_new_clientid v.new.clientid
184#define lk_new_owner v.new.owner
185#define lk_old_lock_stateid v.old.lock_stateid
186#define lk_old_lock_seqid v.old.lock_seqid
187
188#define lk_resp_stateid u.ok.stateid
189#define lk_denied u.denied
190
191
192struct nfsd4_lockt {
193 u32 lt_type;
194 clientid_t lt_clientid;
195 struct xdr_netobj lt_owner;
196 u64 lt_offset;
197 u64 lt_length;
198 struct nfsd4_lock_denied lt_denied;
199};
200
201
202struct nfsd4_locku {
203 u32 lu_type;
204 u32 lu_seqid;
205 stateid_t lu_stateid;
206 u64 lu_offset;
207 u64 lu_length;
208};
209
210
211struct nfsd4_lookup {
212 u32 lo_len; /* request */
213 char * lo_name; /* request */
214};
215
216struct nfsd4_putfh {
217 u32 pf_fhlen; /* request */
218 char *pf_fhval; /* request */
219 bool no_verify; /* represents foreigh fh */
220};
221
222struct nfsd4_getxattr {
223 char *getxa_name; /* request */
224 u32 getxa_len; /* request */
225 void *getxa_buf;
226};
227
228struct nfsd4_setxattr {
229 u32 setxa_flags; /* request */
230 char *setxa_name; /* request */
231 char *setxa_buf; /* request */
232 u32 setxa_len; /* request */
233 struct nfsd4_change_info setxa_cinfo; /* response */
234};
235
236struct nfsd4_removexattr {
237 char *rmxa_name; /* request */
238 struct nfsd4_change_info rmxa_cinfo; /* response */
239};
240
241struct nfsd4_listxattrs {
242 u64 lsxa_cookie; /* request */
243 u32 lsxa_maxcount; /* request */
244 char *lsxa_buf; /* unfiltered buffer (reply) */
245 u32 lsxa_len; /* unfiltered len (reply) */
246};
247
248struct nfsd4_open {
249 u32 op_claim_type; /* request */
250 u32 op_fnamelen;
251 char * op_fname; /* request - everything but CLAIM_PREV */
252 u32 op_delegate_type; /* request - CLAIM_PREV only */
253 stateid_t op_delegate_stateid; /* request - response */
254 u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */
255 u32 op_create; /* request */
256 u32 op_createmode; /* request */
257 int op_umask; /* request */
258 u32 op_bmval[3]; /* request */
259 struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
260 nfs4_verifier op_verf __attribute__((aligned(32)));
261 /* EXCLUSIVE4 */
262 clientid_t op_clientid; /* request */
263 struct xdr_netobj op_owner; /* request */
264 u32 op_seqid; /* request */
265 u32 op_share_access; /* request */
266 u32 op_share_deny; /* request */
267 u32 op_deleg_want; /* request */
268 stateid_t op_stateid; /* response */
269 __be32 op_xdr_error; /* see nfsd4_open_omfg() */
270 u32 op_recall; /* recall */
271 struct nfsd4_change_info op_cinfo; /* response */
272 u32 op_rflags; /* response */
273 bool op_truncate; /* used during processing */
274 bool op_created; /* used during processing */
275 struct nfs4_openowner *op_openowner; /* used during processing */
276 struct file *op_filp; /* used during processing */
277 struct nfs4_file *op_file; /* used during processing */
278 struct nfs4_ol_stateid *op_stp; /* used during processing */
279 struct nfs4_clnt_odstate *op_odstate; /* used during processing */
280 struct nfs4_acl *op_acl;
281 struct xdr_netobj op_label;
282 struct svc_rqst *op_rqstp;
283};
284
285struct nfsd4_open_confirm {
286 stateid_t oc_req_stateid /* request */;
287 u32 oc_seqid /* request */;
288 stateid_t oc_resp_stateid /* response */;
289};
290
291struct nfsd4_open_downgrade {
292 stateid_t od_stateid;
293 u32 od_seqid;
294 u32 od_share_access; /* request */
295 u32 od_deleg_want; /* request */
296 u32 od_share_deny; /* request */
297};
298
299
300struct nfsd4_read {
301 stateid_t rd_stateid; /* request */
302 u64 rd_offset; /* request */
303 u32 rd_length; /* request */
304 int rd_vlen;
305 struct nfsd_file *rd_nf;
306
307 struct svc_rqst *rd_rqstp; /* response */
308 struct svc_fh *rd_fhp; /* response */
309 u32 rd_eof; /* response */
310};
311
312struct nfsd4_readdir {
313 u64 rd_cookie; /* request */
314 nfs4_verifier rd_verf; /* request */
315 u32 rd_dircount; /* request */
316 u32 rd_maxcount; /* request */
317 u32 rd_bmval[3]; /* request */
318 struct svc_rqst *rd_rqstp; /* response */
319 struct svc_fh * rd_fhp; /* response */
320
321 struct readdir_cd common;
322 struct xdr_stream *xdr;
323 int cookie_offset;
324};
325
326struct nfsd4_release_lockowner {
327 clientid_t rl_clientid;
328 struct xdr_netobj rl_owner;
329};
330struct nfsd4_readlink {
331 struct svc_rqst *rl_rqstp; /* request */
332 struct svc_fh * rl_fhp; /* request */
333};
334
335struct nfsd4_remove {
336 u32 rm_namelen; /* request */
337 char * rm_name; /* request */
338 struct nfsd4_change_info rm_cinfo; /* response */
339};
340
341struct nfsd4_rename {
342 u32 rn_snamelen; /* request */
343 char * rn_sname; /* request */
344 u32 rn_tnamelen; /* request */
345 char * rn_tname; /* request */
346 struct nfsd4_change_info rn_sinfo; /* response */
347 struct nfsd4_change_info rn_tinfo; /* response */
348};
349
350struct nfsd4_secinfo {
351 u32 si_namelen; /* request */
352 char *si_name; /* request */
353 struct svc_export *si_exp; /* response */
354};
355
356struct nfsd4_secinfo_no_name {
357 u32 sin_style; /* request */
358 struct svc_export *sin_exp; /* response */
359};
360
361struct nfsd4_setattr {
362 stateid_t sa_stateid; /* request */
363 u32 sa_bmval[3]; /* request */
364 struct iattr sa_iattr; /* request */
365 struct nfs4_acl *sa_acl;
366 struct xdr_netobj sa_label;
367};
368
369struct nfsd4_setclientid {
370 nfs4_verifier se_verf; /* request */
371 struct xdr_netobj se_name;
372 u32 se_callback_prog; /* request */
373 u32 se_callback_netid_len; /* request */
374 char * se_callback_netid_val; /* request */
375 u32 se_callback_addr_len; /* request */
376 char * se_callback_addr_val; /* request */
377 u32 se_callback_ident; /* request */
378 clientid_t se_clientid; /* response */
379 nfs4_verifier se_confirm; /* response */
380};
381
382struct nfsd4_setclientid_confirm {
383 clientid_t sc_clientid;
384 nfs4_verifier sc_confirm;
385};
386
387struct nfsd4_test_stateid_id {
388 __be32 ts_id_status;
389 stateid_t ts_id_stateid;
390 struct list_head ts_id_list;
391};
392
393struct nfsd4_test_stateid {
394 u32 ts_num_ids;
395 struct list_head ts_stateid_list;
396};
397
398struct nfsd4_free_stateid {
399 stateid_t fr_stateid; /* request */
400};
401
402/* also used for NVERIFY */
403struct nfsd4_verify {
404 u32 ve_bmval[3]; /* request */
405 u32 ve_attrlen; /* request */
406 char * ve_attrval; /* request */
407};
408
409struct nfsd4_write {
410 stateid_t wr_stateid; /* request */
411 u64 wr_offset; /* request */
412 u32 wr_stable_how; /* request */
413 u32 wr_buflen; /* request */
414 struct xdr_buf wr_payload; /* request */
415
416 u32 wr_bytes_written; /* response */
417 u32 wr_how_written; /* response */
418 nfs4_verifier wr_verifier; /* response */
419};
420
421struct nfsd4_exchange_id {
422 nfs4_verifier verifier;
423 struct xdr_netobj clname;
424 u32 flags;
425 clientid_t clientid;
426 u32 seqid;
427 u32 spa_how;
428 u32 spo_must_enforce[3];
429 u32 spo_must_allow[3];
430 struct xdr_netobj nii_domain;
431 struct xdr_netobj nii_name;
432 struct timespec64 nii_time;
433};
434
435struct nfsd4_sequence {
436 struct nfs4_sessionid sessionid; /* request/response */
437 u32 seqid; /* request/response */
438 u32 slotid; /* request/response */
439 u32 maxslots; /* request/response */
440 u32 cachethis; /* request */
441#if 0
442 u32 target_maxslots; /* response */
443#endif /* not yet */
444 u32 status_flags; /* response */
445};
446
447struct nfsd4_destroy_session {
448 struct nfs4_sessionid sessionid;
449};
450
451struct nfsd4_destroy_clientid {
452 clientid_t clientid;
453};
454
455struct nfsd4_reclaim_complete {
456 u32 rca_one_fs;
457};
458
459struct nfsd4_deviceid {
460 u64 fsid_idx;
461 u32 generation;
462 u32 pad;
463};
464
465struct nfsd4_layout_seg {
466 u32 iomode;
467 u64 offset;
468 u64 length;
469};
470
471struct nfsd4_getdeviceinfo {
472 struct nfsd4_deviceid gd_devid; /* request */
473 u32 gd_layout_type; /* request */
474 u32 gd_maxcount; /* request */
475 u32 gd_notify_types;/* request - response */
476 void *gd_device; /* response */
477};
478
479struct nfsd4_layoutget {
480 u64 lg_minlength; /* request */
481 u32 lg_signal; /* request */
482 u32 lg_layout_type; /* request */
483 u32 lg_maxcount; /* request */
484 stateid_t lg_sid; /* request/response */
485 struct nfsd4_layout_seg lg_seg; /* request/response */
486 void *lg_content; /* response */
487};
488
489struct nfsd4_layoutcommit {
490 stateid_t lc_sid; /* request */
491 struct nfsd4_layout_seg lc_seg; /* request */
492 u32 lc_reclaim; /* request */
493 u32 lc_newoffset; /* request */
494 u64 lc_last_wr; /* request */
495 struct timespec64 lc_mtime; /* request */
496 u32 lc_layout_type; /* request */
497 u32 lc_up_len; /* layout length */
498 void *lc_up_layout; /* decoded by callback */
499 u32 lc_size_chg; /* boolean for response */
500 u64 lc_newsize; /* response */
501};
502
503struct nfsd4_layoutreturn {
504 u32 lr_return_type; /* request */
505 u32 lr_layout_type; /* request */
506 struct nfsd4_layout_seg lr_seg; /* request */
507 u32 lr_reclaim; /* request */
508 u32 lrf_body_len; /* request */
509 void *lrf_body; /* request */
510 stateid_t lr_sid; /* request/response */
511 u32 lrs_present; /* response */
512};
513
514struct nfsd4_fallocate {
515 /* request */
516 stateid_t falloc_stateid;
517 loff_t falloc_offset;
518 u64 falloc_length;
519};
520
521struct nfsd4_clone {
522 /* request */
523 stateid_t cl_src_stateid;
524 stateid_t cl_dst_stateid;
525 u64 cl_src_pos;
526 u64 cl_dst_pos;
527 u64 cl_count;
528};
529
530struct nfsd42_write_res {
531 u64 wr_bytes_written;
532 u32 wr_stable_how;
533 nfs4_verifier wr_verifier;
534 stateid_t cb_stateid;
535};
536
537struct nfsd4_cb_offload {
538 struct nfsd4_callback co_cb;
539 struct nfsd42_write_res co_res;
540 __be32 co_nfserr;
541 struct knfsd_fh co_fh;
542};
543
544struct nfsd4_copy {
545 /* request */
546 stateid_t cp_src_stateid;
547 stateid_t cp_dst_stateid;
548 u64 cp_src_pos;
549 u64 cp_dst_pos;
550 u64 cp_count;
551 struct nl4_server *cp_src;
552
553 unsigned long cp_flags;
554#define NFSD4_COPY_F_STOPPED (0)
555#define NFSD4_COPY_F_INTRA (1)
556#define NFSD4_COPY_F_SYNCHRONOUS (2)
557#define NFSD4_COPY_F_COMMITTED (3)
558
559 /* response */
560 struct nfsd42_write_res cp_res;
561 struct knfsd_fh fh;
562
563 struct nfs4_client *cp_clp;
564
565 struct nfsd_file *nf_src;
566 struct nfsd_file *nf_dst;
567
568 copy_stateid_t cp_stateid;
569
570 struct list_head copies;
571 struct task_struct *copy_task;
572 refcount_t refcount;
573
574 struct vfsmount *ss_mnt;
575 struct nfs_fh c_fh;
576 nfs4_stateid stateid;
577};
578
579static inline void nfsd4_copy_set_sync(struct nfsd4_copy *copy, bool sync)
580{
581 if (sync)
582 set_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
583 else
584 clear_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
585}
586
587static inline bool nfsd4_copy_is_sync(const struct nfsd4_copy *copy)
588{
589 return test_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
590}
591
592static inline bool nfsd4_copy_is_async(const struct nfsd4_copy *copy)
593{
594 return !test_bit(NFSD4_COPY_F_SYNCHRONOUS, ©->cp_flags);
595}
596
597static inline bool nfsd4_ssc_is_inter(const struct nfsd4_copy *copy)
598{
599 return !test_bit(NFSD4_COPY_F_INTRA, ©->cp_flags);
600}
601
602struct nfsd4_seek {
603 /* request */
604 stateid_t seek_stateid;
605 loff_t seek_offset;
606 u32 seek_whence;
607
608 /* response */
609 u32 seek_eof;
610 loff_t seek_pos;
611};
612
613struct nfsd4_offload_status {
614 /* request */
615 stateid_t stateid;
616
617 /* response */
618 u64 count;
619 u32 status;
620};
621
622struct nfsd4_copy_notify {
623 /* request */
624 stateid_t cpn_src_stateid;
625 struct nl4_server *cpn_dst;
626
627 /* response */
628 stateid_t cpn_cnr_stateid;
629 u64 cpn_sec;
630 u32 cpn_nsec;
631 struct nl4_server *cpn_src;
632};
633
634struct nfsd4_op {
635 u32 opnum;
636 __be32 status;
637 const struct nfsd4_operation *opdesc;
638 struct nfs4_replay *replay;
639 union nfsd4_op_u {
640 struct nfsd4_access access;
641 struct nfsd4_close close;
642 struct nfsd4_commit commit;
643 struct nfsd4_create create;
644 struct nfsd4_delegreturn delegreturn;
645 struct nfsd4_getattr getattr;
646 struct svc_fh * getfh;
647 struct nfsd4_link link;
648 struct nfsd4_lock lock;
649 struct nfsd4_lockt lockt;
650 struct nfsd4_locku locku;
651 struct nfsd4_lookup lookup;
652 struct nfsd4_verify nverify;
653 struct nfsd4_open open;
654 struct nfsd4_open_confirm open_confirm;
655 struct nfsd4_open_downgrade open_downgrade;
656 struct nfsd4_putfh putfh;
657 struct nfsd4_read read;
658 struct nfsd4_readdir readdir;
659 struct nfsd4_readlink readlink;
660 struct nfsd4_remove remove;
661 struct nfsd4_rename rename;
662 clientid_t renew;
663 struct nfsd4_secinfo secinfo;
664 struct nfsd4_setattr setattr;
665 struct nfsd4_setclientid setclientid;
666 struct nfsd4_setclientid_confirm setclientid_confirm;
667 struct nfsd4_verify verify;
668 struct nfsd4_write write;
669 struct nfsd4_release_lockowner release_lockowner;
670
671 /* NFSv4.1 */
672 struct nfsd4_exchange_id exchange_id;
673 struct nfsd4_backchannel_ctl backchannel_ctl;
674 struct nfsd4_bind_conn_to_session bind_conn_to_session;
675 struct nfsd4_create_session create_session;
676 struct nfsd4_destroy_session destroy_session;
677 struct nfsd4_destroy_clientid destroy_clientid;
678 struct nfsd4_sequence sequence;
679 struct nfsd4_reclaim_complete reclaim_complete;
680 struct nfsd4_test_stateid test_stateid;
681 struct nfsd4_free_stateid free_stateid;
682 struct nfsd4_getdeviceinfo getdeviceinfo;
683 struct nfsd4_layoutget layoutget;
684 struct nfsd4_layoutcommit layoutcommit;
685 struct nfsd4_layoutreturn layoutreturn;
686 struct nfsd4_secinfo_no_name secinfo_no_name;
687
688 /* NFSv4.2 */
689 struct nfsd4_fallocate allocate;
690 struct nfsd4_fallocate deallocate;
691 struct nfsd4_clone clone;
692 struct nfsd4_copy copy;
693 struct nfsd4_offload_status offload_status;
694 struct nfsd4_copy_notify copy_notify;
695 struct nfsd4_seek seek;
696
697 struct nfsd4_getxattr getxattr;
698 struct nfsd4_setxattr setxattr;
699 struct nfsd4_listxattrs listxattrs;
700 struct nfsd4_removexattr removexattr;
701 } u;
702};
703
704bool nfsd4_cache_this_op(struct nfsd4_op *);
705
706/*
707 * Memory needed just for the duration of processing one compound:
708 */
709struct svcxdr_tmpbuf {
710 struct svcxdr_tmpbuf *next;
711 char buf[];
712};
713
714struct nfsd4_compoundargs {
715 /* scratch variables for XDR decode */
716 struct xdr_stream *xdr;
717 struct svcxdr_tmpbuf *to_free;
718 struct svc_rqst *rqstp;
719
720 char * tag;
721 u32 taglen;
722 u32 minorversion;
723 u32 client_opcnt;
724 u32 opcnt;
725 struct nfsd4_op *ops;
726 struct nfsd4_op iops[8];
727};
728
729struct nfsd4_compoundres {
730 /* scratch variables for XDR encode */
731 struct xdr_stream *xdr;
732 struct svc_rqst * rqstp;
733
734 __be32 *statusp;
735 char * tag;
736 u32 taglen;
737 u32 opcnt;
738
739 struct nfsd4_compound_state cstate;
740};
741
742static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
743{
744 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
745 return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
746}
747
748/*
749 * The session reply cache only needs to cache replies that the client
750 * actually asked us to. But it's almost free for us to cache compounds
751 * consisting of only a SEQUENCE op, so we may as well cache those too.
752 * Also, the protocol doesn't give us a convenient response in the case
753 * of a replay of a solo SEQUENCE op that wasn't cached
754 * (RETRY_UNCACHED_REP can only be returned in the second op of a
755 * compound).
756 */
757static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp)
758{
759 return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
760 || nfsd4_is_solo_sequence(resp);
761}
762
763static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
764{
765 struct nfsd4_compoundres *resp = rqstp->rq_resp;
766 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
767
768 return argp->opcnt == resp->opcnt;
769}
770
771const struct nfsd4_operation *OPDESC(struct nfsd4_op *op);
772int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
773void warn_on_nonidempotent_op(struct nfsd4_op *op);
774
775#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
776
777static inline void
778set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
779{
780 BUG_ON(!fhp->fh_pre_saved);
781 cinfo->atomic = (u32)(fhp->fh_post_saved && !fhp->fh_no_atomic_attr);
782
783 cinfo->before_change = fhp->fh_pre_change;
784 cinfo->after_change = fhp->fh_post_change;
785}
786
787
788bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
789bool nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
790bool nfs4svc_encode_compoundres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
791__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
792void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
793void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
794__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
795 struct svc_fh *fhp, struct svc_export *exp,
796 struct dentry *dentry,
797 u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
798extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
799 struct nfsd4_compound_state *, union nfsd4_op_u *u);
800extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
801 struct nfsd4_compound_state *, union nfsd4_op_u *u);
802extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
803 struct nfsd4_compound_state *, union nfsd4_op_u *u);
804extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *,
805 struct nfsd4_compound_state *, union nfsd4_op_u *u);
806extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *,
807 struct nfsd4_compound_state *, union nfsd4_op_u *u);
808extern __be32 nfsd4_create_session(struct svc_rqst *,
809 struct nfsd4_compound_state *, union nfsd4_op_u *u);
810extern __be32 nfsd4_sequence(struct svc_rqst *,
811 struct nfsd4_compound_state *, union nfsd4_op_u *u);
812extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
813extern __be32 nfsd4_destroy_session(struct svc_rqst *,
814 struct nfsd4_compound_state *, union nfsd4_op_u *u);
815extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *,
816 union nfsd4_op_u *u);
817__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *,
818 union nfsd4_op_u *u);
819extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
820 struct nfsd4_open *open, struct nfsd_net *nn);
821extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
822 struct svc_fh *current_fh, struct nfsd4_open *open);
823extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
824extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
825 struct nfsd4_open *open);
826extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
827 struct nfsd4_compound_state *, union nfsd4_op_u *u);
828extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
829 union nfsd4_op_u *u);
830extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
831 struct nfsd4_compound_state *, union nfsd4_op_u *u);
832extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
833 union nfsd4_op_u *u);
834extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
835 union nfsd4_op_u *u);
836extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
837 union nfsd4_op_u *u);
838extern __be32
839nfsd4_release_lockowner(struct svc_rqst *rqstp,
840 struct nfsd4_compound_state *, union nfsd4_op_u *u);
841extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp);
842extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
843 struct nfsd4_compound_state *, union nfsd4_op_u *u);
844extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
845 union nfsd4_op_u *u);
846extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
847 struct nfsd4_compound_state *, union nfsd4_op_u *);
848extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
849 struct nfsd4_compound_state *, union nfsd4_op_u *);
850extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
851
852enum nfsd4_op_flags {
853 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
854 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
855 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
856 /* For rfc 5661 section 2.6.3.1.1: */
857 OP_HANDLES_WRONGSEC = 1 << 3,
858 OP_IS_PUTFH_LIKE = 1 << 4,
859 /*
860 * These are the ops whose result size we estimate before
861 * encoding, to avoid performing an op then not being able to
862 * respond or cache a response. This includes writes and setattrs
863 * as well as the operations usually called "nonidempotent":
864 */
865 OP_MODIFIES_SOMETHING = 1 << 5,
866 /*
867 * Cache compounds containing these ops in the xid-based drc:
868 * We use the DRC for compounds containing non-idempotent
869 * operations, *except* those that are 4.1-specific (since
870 * sessions provide their own EOS), and except for stateful
871 * operations other than setclientid and setclientid_confirm
872 * (since sequence numbers provide EOS for open, lock, etc in
873 * the v4.0 case).
874 */
875 OP_CACHEME = 1 << 6,
876 /*
877 * These are ops which clear current state id.
878 */
879 OP_CLEAR_STATEID = 1 << 7,
880 /* Most ops return only an error on failure; some may do more: */
881 OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8,
882};
883
884struct nfsd4_operation {
885 __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
886 union nfsd4_op_u *);
887 void (*op_release)(union nfsd4_op_u *);
888 u32 op_flags;
889 char *op_name;
890 /* Try to get response size before operation */
891 u32 (*op_rsize_bop)(const struct svc_rqst *rqstp,
892 const struct nfsd4_op *op);
893 void (*op_get_currentstateid)(struct nfsd4_compound_state *,
894 union nfsd4_op_u *);
895 void (*op_set_currentstateid)(struct nfsd4_compound_state *,
896 union nfsd4_op_u *);
897};
898
899struct nfsd4_cb_recall_any {
900 struct nfsd4_callback ra_cb;
901 u32 ra_keep;
902 u32 ra_bmval[1];
903};
904
905#endif