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TOMOYO Linux Cross Reference
Linux/fs/nfsd/xdr4.h

Version: ~ [ linux-5.1-rc5 ] ~ [ linux-5.0.7 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.34 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.111 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.168 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.178 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.138 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.65 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  1 /*
  2  *  Server-side types for NFSv4.
  3  *
  4  *  Copyright (c) 2002 The Regents of the University of Michigan.
  5  *  All rights reserved.
  6  *
  7  *  Kendrick Smith <kmsmith@umich.edu>
  8  *  Andy Adamson   <andros@umich.edu>
  9  *
 10  *  Redistribution and use in source and binary forms, with or without
 11  *  modification, are permitted provided that the following conditions
 12  *  are met:
 13  *
 14  *  1. Redistributions of source code must retain the above copyright
 15  *     notice, this list of conditions and the following disclaimer.
 16  *  2. Redistributions in binary form must reproduce the above copyright
 17  *     notice, this list of conditions and the following disclaimer in the
 18  *     documentation and/or other materials provided with the distribution.
 19  *  3. Neither the name of the University nor the names of its
 20  *     contributors may be used to endorse or promote products derived
 21  *     from this software without specific prior written permission.
 22  *
 23  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 24  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 25  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 26  *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 27  *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 28  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 29  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 30  *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 31  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 32  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 33  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 34  *
 35  */
 36 
 37 #ifndef _LINUX_NFSD_XDR4_H
 38 #define _LINUX_NFSD_XDR4_H
 39 
 40 #include "state.h"
 41 #include "nfsd.h"
 42 
 43 #define NFSD4_MAX_TAGLEN        128
 44 #define XDR_LEN(n)                     (((n) + 3) & ~3)
 45 
 46 #define CURRENT_STATE_ID_FLAG (1<<0)
 47 #define SAVED_STATE_ID_FLAG (1<<1)
 48 
 49 #define SET_STATE_ID(c, f) ((c)->sid_flags |= (f))
 50 #define HAS_STATE_ID(c, f) ((c)->sid_flags & (f))
 51 #define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f))
 52 
 53 struct nfsd4_compound_state {
 54         struct svc_fh           current_fh;
 55         struct svc_fh           save_fh;
 56         struct nfs4_stateowner  *replay_owner;
 57         struct nfs4_client      *clp;
 58         /* For sessions DRC */
 59         struct nfsd4_session    *session;
 60         struct nfsd4_slot       *slot;
 61         int                     data_offset;
 62         bool                    spo_must_allowed;
 63         size_t                  iovlen;
 64         u32                     minorversion;
 65         __be32                  status;
 66         stateid_t       current_stateid;
 67         stateid_t       save_stateid;
 68         /* to indicate current and saved state id presents */
 69         u32             sid_flags;
 70 };
 71 
 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         stateid_t               cb_stateid;
515 };
516 
517 struct nfsd4_copy {
518         /* request */
519         stateid_t       cp_src_stateid;
520         stateid_t       cp_dst_stateid;
521         u64             cp_src_pos;
522         u64             cp_dst_pos;
523         u64             cp_count;
524 
525         /* both */
526         bool            cp_synchronous;
527 
528         /* response */
529         struct nfsd42_write_res cp_res;
530 
531         /* for cb_offload */
532         struct nfsd4_callback   cp_cb;
533         __be32                  nfserr;
534         struct knfsd_fh         fh;
535 
536         struct nfs4_client      *cp_clp;
537 
538         struct file             *file_src;
539         struct file             *file_dst;
540 
541         stateid_t               cp_stateid;
542 
543         struct list_head        copies;
544         struct task_struct      *copy_task;
545         refcount_t              refcount;
546         bool                    stopped;
547 };
548 
549 struct nfsd4_seek {
550         /* request */
551         stateid_t       seek_stateid;
552         loff_t          seek_offset;
553         u32             seek_whence;
554 
555         /* response */
556         u32             seek_eof;
557         loff_t          seek_pos;
558 };
559 
560 struct nfsd4_offload_status {
561         /* request */
562         stateid_t       stateid;
563 
564         /* response */
565         u64             count;
566         u32             status;
567 };
568 
569 struct nfsd4_op {
570         int                                     opnum;
571         const struct nfsd4_operation *          opdesc;
572         __be32                                  status;
573         union nfsd4_op_u {
574                 struct nfsd4_access             access;
575                 struct nfsd4_close              close;
576                 struct nfsd4_commit             commit;
577                 struct nfsd4_create             create;
578                 struct nfsd4_delegreturn        delegreturn;
579                 struct nfsd4_getattr            getattr;
580                 struct svc_fh *                 getfh;
581                 struct nfsd4_link               link;
582                 struct nfsd4_lock               lock;
583                 struct nfsd4_lockt              lockt;
584                 struct nfsd4_locku              locku;
585                 struct nfsd4_lookup             lookup;
586                 struct nfsd4_verify             nverify;
587                 struct nfsd4_open               open;
588                 struct nfsd4_open_confirm       open_confirm;
589                 struct nfsd4_open_downgrade     open_downgrade;
590                 struct nfsd4_putfh              putfh;
591                 struct nfsd4_read               read;
592                 struct nfsd4_readdir            readdir;
593                 struct nfsd4_readlink           readlink;
594                 struct nfsd4_remove             remove;
595                 struct nfsd4_rename             rename;
596                 clientid_t                      renew;
597                 struct nfsd4_secinfo            secinfo;
598                 struct nfsd4_setattr            setattr;
599                 struct nfsd4_setclientid        setclientid;
600                 struct nfsd4_setclientid_confirm setclientid_confirm;
601                 struct nfsd4_verify             verify;
602                 struct nfsd4_write              write;
603                 struct nfsd4_release_lockowner  release_lockowner;
604 
605                 /* NFSv4.1 */
606                 struct nfsd4_exchange_id        exchange_id;
607                 struct nfsd4_backchannel_ctl    backchannel_ctl;
608                 struct nfsd4_bind_conn_to_session bind_conn_to_session;
609                 struct nfsd4_create_session     create_session;
610                 struct nfsd4_destroy_session    destroy_session;
611                 struct nfsd4_destroy_clientid   destroy_clientid;
612                 struct nfsd4_sequence           sequence;
613                 struct nfsd4_reclaim_complete   reclaim_complete;
614                 struct nfsd4_test_stateid       test_stateid;
615                 struct nfsd4_free_stateid       free_stateid;
616                 struct nfsd4_getdeviceinfo      getdeviceinfo;
617                 struct nfsd4_layoutget          layoutget;
618                 struct nfsd4_layoutcommit       layoutcommit;
619                 struct nfsd4_layoutreturn       layoutreturn;
620                 struct nfsd4_secinfo_no_name    secinfo_no_name;
621 
622                 /* NFSv4.2 */
623                 struct nfsd4_fallocate          allocate;
624                 struct nfsd4_fallocate          deallocate;
625                 struct nfsd4_clone              clone;
626                 struct nfsd4_copy               copy;
627                 struct nfsd4_offload_status     offload_status;
628                 struct nfsd4_seek               seek;
629         } u;
630         struct nfs4_replay *                    replay;
631 };
632 
633 bool nfsd4_cache_this_op(struct nfsd4_op *);
634 
635 /*
636  * Memory needed just for the duration of processing one compound:
637  */
638 struct svcxdr_tmpbuf {
639         struct svcxdr_tmpbuf *next;
640         char buf[];
641 };
642 
643 struct nfsd4_compoundargs {
644         /* scratch variables for XDR decode */
645         __be32 *                        p;
646         __be32 *                        end;
647         struct page **                  pagelist;
648         int                             pagelen;
649         bool                            tail;
650         __be32                          tmp[8];
651         __be32 *                        tmpp;
652         struct svcxdr_tmpbuf            *to_free;
653 
654         struct svc_rqst                 *rqstp;
655 
656         u32                             taglen;
657         char *                          tag;
658         u32                             minorversion;
659         u32                             opcnt;
660         struct nfsd4_op                 *ops;
661         struct nfsd4_op                 iops[8];
662         int                             cachetype;
663 };
664 
665 struct nfsd4_compoundres {
666         /* scratch variables for XDR encode */
667         struct xdr_stream               xdr;
668         struct svc_rqst *               rqstp;
669 
670         u32                             taglen;
671         char *                          tag;
672         u32                             opcnt;
673         __be32 *                        tagp; /* tag, opcount encode location */
674         struct nfsd4_compound_state     cstate;
675 };
676 
677 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
678 {
679         struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
680         return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
681 }
682 
683 /*
684  * The session reply cache only needs to cache replies that the client
685  * actually asked us to.  But it's almost free for us to cache compounds
686  * consisting of only a SEQUENCE op, so we may as well cache those too.
687  * Also, the protocol doesn't give us a convenient response in the case
688  * of a replay of a solo SEQUENCE op that wasn't cached
689  * (RETRY_UNCACHED_REP can only be returned in the second op of a
690  * compound).
691  */
692 static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp)
693 {
694         return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
695                 || nfsd4_is_solo_sequence(resp);
696 }
697 
698 static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
699 {
700         struct nfsd4_compoundres *resp = rqstp->rq_resp;
701         struct nfsd4_compoundargs *argp = rqstp->rq_argp;
702 
703         return argp->opcnt == resp->opcnt;
704 }
705 
706 const struct nfsd4_operation *OPDESC(struct nfsd4_op *op);
707 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
708 void warn_on_nonidempotent_op(struct nfsd4_op *op);
709 
710 #define NFS4_SVC_XDRSIZE                sizeof(struct nfsd4_compoundargs)
711 
712 static inline void
713 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
714 {
715         BUG_ON(!fhp->fh_pre_saved);
716         cinfo->atomic = (u32)fhp->fh_post_saved;
717         cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry));
718 
719         cinfo->before_change = fhp->fh_pre_change;
720         cinfo->after_change = fhp->fh_post_change;
721         cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
722         cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
723         cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
724         cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
725 
726 }
727 
728 
729 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
730 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *);
731 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *);
732 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *);
733 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
734 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
735 void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
736 __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
737                 struct svc_fh *fhp, struct svc_export *exp,
738                 struct dentry *dentry,
739                 u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
740 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
741                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
742 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
743                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
744 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
745                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
746 extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *,
747                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
748 extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *,
749                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
750 extern __be32 nfsd4_create_session(struct svc_rqst *,
751                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
752 extern __be32 nfsd4_sequence(struct svc_rqst *,
753                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
754 extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
755 extern __be32 nfsd4_destroy_session(struct svc_rqst *,
756                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
757 extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *,
758                 union nfsd4_op_u *u);
759 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *,
760                 union nfsd4_op_u *u);
761 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
762                 struct nfsd4_open *open, struct nfsd_net *nn);
763 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
764                 struct svc_fh *current_fh, struct nfsd4_open *open);
765 extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
766 extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
767                 struct nfsd4_open *open);
768 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
769                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
770 extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
771                 union nfsd4_op_u *u);
772 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
773                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
774 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
775                 union nfsd4_op_u *u);
776 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
777                 union nfsd4_op_u *u);
778 extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
779                 union nfsd4_op_u *u);
780 extern __be32
781 nfsd4_release_lockowner(struct svc_rqst *rqstp,
782                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
783 extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp);
784 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
785                 struct nfsd4_compound_state *, union nfsd4_op_u *u);
786 extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
787                 union nfsd4_op_u *u);
788 extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
789                 struct nfsd4_compound_state *, union nfsd4_op_u *);
790 extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
791                 struct nfsd4_compound_state *, union nfsd4_op_u *);
792 extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
793 
794 enum nfsd4_op_flags {
795         ALLOWED_WITHOUT_FH = 1 << 0,    /* No current filehandle required */
796         ALLOWED_ON_ABSENT_FS = 1 << 1,  /* ops processed on absent fs */
797         ALLOWED_AS_FIRST_OP = 1 << 2,   /* ops reqired first in compound */
798         /* For rfc 5661 section 2.6.3.1.1: */
799         OP_HANDLES_WRONGSEC = 1 << 3,
800         OP_IS_PUTFH_LIKE = 1 << 4,
801         /*
802          * These are the ops whose result size we estimate before
803          * encoding, to avoid performing an op then not being able to
804          * respond or cache a response.  This includes writes and setattrs
805          * as well as the operations usually called "nonidempotent":
806          */
807         OP_MODIFIES_SOMETHING = 1 << 5,
808         /*
809          * Cache compounds containing these ops in the xid-based drc:
810          * We use the DRC for compounds containing non-idempotent
811          * operations, *except* those that are 4.1-specific (since
812          * sessions provide their own EOS), and except for stateful
813          * operations other than setclientid and setclientid_confirm
814          * (since sequence numbers provide EOS for open, lock, etc in
815          * the v4.0 case).
816          */
817         OP_CACHEME = 1 << 6,
818         /*
819          * These are ops which clear current state id.
820          */
821         OP_CLEAR_STATEID = 1 << 7,
822         /* Most ops return only an error on failure; some may do more: */
823         OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8,
824 };
825 
826 struct nfsd4_operation {
827         __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
828                         union nfsd4_op_u *);
829         void (*op_release)(union nfsd4_op_u *);
830         u32 op_flags;
831         char *op_name;
832         /* Try to get response size before operation */
833         u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *);
834         void (*op_get_currentstateid)(struct nfsd4_compound_state *,
835                         union nfsd4_op_u *);
836         void (*op_set_currentstateid)(struct nfsd4_compound_state *,
837                         union nfsd4_op_u *);
838 };
839 
840 
841 #endif
842 
843 /*
844  * Local variables:
845  *  c-basic-offset: 8
846  * End:
847  */
848 

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