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TOMOYO Linux Cross Reference
Linux/include/linux/nfs_xdr.h

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  1 #ifndef _LINUX_NFS_XDR_H
  2 #define _LINUX_NFS_XDR_H
  3 
  4 #include <linux/nfsacl.h>
  5 #include <linux/sunrpc/gss_api.h>
  6 
  7 /*
  8  * To change the maximum rsize and wsize supported by the NFS client, adjust
  9  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
 10  * support a megabyte or more.  The default is left at 4096 bytes, which is
 11  * reasonable for NFS over UDP.
 12  */
 13 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
 14 #define NFS_DEF_FILE_IO_SIZE    (4096U)
 15 #define NFS_MIN_FILE_IO_SIZE    (1024U)
 16 
 17 struct nfs4_string {
 18         unsigned int len;
 19         char *data;
 20 };
 21 
 22 struct nfs_fsid {
 23         uint64_t                major;
 24         uint64_t                minor;
 25 };
 26 
 27 /*
 28  * Helper for checking equality between 2 fsids.
 29  */
 30 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
 31 {
 32         return a->major == b->major && a->minor == b->minor;
 33 }
 34 
 35 struct nfs4_threshold {
 36         __u32   bm;
 37         __u32   l_type;
 38         __u64   rd_sz;
 39         __u64   wr_sz;
 40         __u64   rd_io_sz;
 41         __u64   wr_io_sz;
 42 };
 43 
 44 struct nfs_fattr {
 45         unsigned int            valid;          /* which fields are valid */
 46         umode_t                 mode;
 47         __u32                   nlink;
 48         kuid_t                  uid;
 49         kgid_t                  gid;
 50         dev_t                   rdev;
 51         __u64                   size;
 52         union {
 53                 struct {
 54                         __u32   blocksize;
 55                         __u32   blocks;
 56                 } nfs2;
 57                 struct {
 58                         __u64   used;
 59                 } nfs3;
 60         } du;
 61         struct nfs_fsid         fsid;
 62         __u64                   fileid;
 63         __u64                   mounted_on_fileid;
 64         struct timespec         atime;
 65         struct timespec         mtime;
 66         struct timespec         ctime;
 67         __u64                   change_attr;    /* NFSv4 change attribute */
 68         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
 69         __u64                   pre_size;       /* pre_op_attr.size       */
 70         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
 71         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
 72         unsigned long           time_start;
 73         unsigned long           gencount;
 74         struct nfs4_string      *owner_name;
 75         struct nfs4_string      *group_name;
 76         struct nfs4_threshold   *mdsthreshold;  /* pNFS threshold hints */
 77 };
 78 
 79 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
 80 #define NFS_ATTR_FATTR_MODE             (1U << 1)
 81 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
 82 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
 83 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
 84 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
 85 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
 86 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
 87 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
 88 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
 89 #define NFS_ATTR_FATTR_FSID             (1U << 10)
 90 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
 91 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
 92 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
 93 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
 94 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
 95 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
 96 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
 97 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
 98 #define NFS_ATTR_FATTR_V4_LOCATIONS     (1U << 19)
 99 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 20)
100 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 21)
101 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
102 #define NFS_ATTR_FATTR_OWNER_NAME       (1U << 23)
103 #define NFS_ATTR_FATTR_GROUP_NAME       (1U << 24)
104 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
105 
106 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
107                 | NFS_ATTR_FATTR_MODE \
108                 | NFS_ATTR_FATTR_NLINK \
109                 | NFS_ATTR_FATTR_OWNER \
110                 | NFS_ATTR_FATTR_GROUP \
111                 | NFS_ATTR_FATTR_RDEV \
112                 | NFS_ATTR_FATTR_SIZE \
113                 | NFS_ATTR_FATTR_FSID \
114                 | NFS_ATTR_FATTR_FILEID \
115                 | NFS_ATTR_FATTR_ATIME \
116                 | NFS_ATTR_FATTR_MTIME \
117                 | NFS_ATTR_FATTR_CTIME \
118                 | NFS_ATTR_FATTR_CHANGE)
119 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
120                 | NFS_ATTR_FATTR_BLOCKS_USED)
121 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
122                 | NFS_ATTR_FATTR_SPACE_USED)
123 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
124                 | NFS_ATTR_FATTR_SPACE_USED \
125                 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
126 
127 /*
128  * Info on the file system
129  */
130 struct nfs_fsinfo {
131         struct nfs_fattr        *fattr; /* Post-op attributes */
132         __u32                   rtmax;  /* max.  read transfer size */
133         __u32                   rtpref; /* pref. read transfer size */
134         __u32                   rtmult; /* reads should be multiple of this */
135         __u32                   wtmax;  /* max.  write transfer size */
136         __u32                   wtpref; /* pref. write transfer size */
137         __u32                   wtmult; /* writes should be multiple of this */
138         __u32                   dtpref; /* pref. readdir transfer size */
139         __u64                   maxfilesize;
140         struct timespec         time_delta; /* server time granularity */
141         __u32                   lease_time; /* in seconds */
142         __u32                   layouttype; /* supported pnfs layout driver */
143         __u32                   blksize; /* preferred pnfs io block size */
144 };
145 
146 struct nfs_fsstat {
147         struct nfs_fattr        *fattr; /* Post-op attributes */
148         __u64                   tbytes; /* total size in bytes */
149         __u64                   fbytes; /* # of free bytes */
150         __u64                   abytes; /* # of bytes available to user */
151         __u64                   tfiles; /* # of files */
152         __u64                   ffiles; /* # of free files */
153         __u64                   afiles; /* # of files available to user */
154 };
155 
156 struct nfs2_fsstat {
157         __u32                   tsize;  /* Server transfer size */
158         __u32                   bsize;  /* Filesystem block size */
159         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
160         __u32                   bfree;  /* No. of free "bsize" blocks */
161         __u32                   bavail; /* No. of available "bsize" blocks */
162 };
163 
164 struct nfs_pathconf {
165         struct nfs_fattr        *fattr; /* Post-op attributes */
166         __u32                   max_link; /* max # of hard links */
167         __u32                   max_namelen; /* max name length */
168 };
169 
170 struct nfs4_change_info {
171         u32                     atomic;
172         u64                     before;
173         u64                     after;
174 };
175 
176 struct nfs_seqid;
177 
178 /* nfs41 sessions channel attributes */
179 struct nfs4_channel_attrs {
180         u32                     max_rqst_sz;
181         u32                     max_resp_sz;
182         u32                     max_resp_sz_cached;
183         u32                     max_ops;
184         u32                     max_reqs;
185 };
186 
187 struct nfs4_slot;
188 struct nfs4_sequence_args {
189         struct nfs4_slot        *sa_slot;
190         u8                      sa_cache_this : 1,
191                                 sa_privileged : 1;
192 };
193 
194 struct nfs4_sequence_res {
195         struct nfs4_slot        *sr_slot;       /* slot used to send request */
196         unsigned long           sr_timestamp;
197         int                     sr_status;      /* sequence operation status */
198         u32                     sr_status_flags;
199         u32                     sr_highest_slotid;
200         u32                     sr_target_highest_slotid;
201 };
202 
203 struct nfs4_get_lease_time_args {
204         struct nfs4_sequence_args       la_seq_args;
205 };
206 
207 struct nfs4_get_lease_time_res {
208         struct nfs4_sequence_res        lr_seq_res;
209         struct nfs_fsinfo              *lr_fsinfo;
210 };
211 
212 #define PNFS_LAYOUT_MAXSIZE 4096
213 
214 struct nfs4_layoutdriver_data {
215         struct page **pages;
216         __u32 pglen;
217         __u32 len;
218 };
219 
220 struct pnfs_layout_range {
221         u32 iomode;
222         u64 offset;
223         u64 length;
224 };
225 
226 struct nfs4_layoutget_args {
227         struct nfs4_sequence_args seq_args;
228         __u32 type;
229         struct pnfs_layout_range range;
230         __u64 minlength;
231         __u32 maxcount;
232         struct inode *inode;
233         struct nfs_open_context *ctx;
234         nfs4_stateid stateid;
235         unsigned long timestamp;
236         struct nfs4_layoutdriver_data layout;
237 };
238 
239 struct nfs4_layoutget_res {
240         struct nfs4_sequence_res seq_res;
241         __u32 return_on_close;
242         struct pnfs_layout_range range;
243         __u32 type;
244         nfs4_stateid stateid;
245         struct nfs4_layoutdriver_data *layoutp;
246 };
247 
248 struct nfs4_layoutget {
249         struct nfs4_layoutget_args args;
250         struct nfs4_layoutget_res res;
251         struct rpc_cred *cred;
252         gfp_t gfp_flags;
253 };
254 
255 struct nfs4_getdeviceinfo_args {
256         struct nfs4_sequence_args seq_args;
257         struct pnfs_device *pdev;
258         __u32 notify_types;
259 };
260 
261 struct nfs4_getdeviceinfo_res {
262         struct nfs4_sequence_res seq_res;
263         struct pnfs_device *pdev;
264         __u32 notification;
265 };
266 
267 struct nfs4_layoutcommit_args {
268         struct nfs4_sequence_args seq_args;
269         nfs4_stateid stateid;
270         __u64 lastbytewritten;
271         struct inode *inode;
272         const u32 *bitmask;
273         size_t layoutupdate_len;
274         struct page *layoutupdate_page;
275         struct page **layoutupdate_pages;
276 };
277 
278 struct nfs4_layoutcommit_res {
279         struct nfs4_sequence_res seq_res;
280         struct nfs_fattr *fattr;
281         const struct nfs_server *server;
282         int status;
283 };
284 
285 struct nfs4_layoutcommit_data {
286         struct rpc_task task;
287         struct nfs_fattr fattr;
288         struct list_head lseg_list;
289         struct rpc_cred *cred;
290         struct inode *inode;
291         struct nfs4_layoutcommit_args args;
292         struct nfs4_layoutcommit_res res;
293 };
294 
295 struct nfs4_layoutreturn_args {
296         struct nfs4_sequence_args seq_args;
297         struct pnfs_layout_hdr *layout;
298         struct inode *inode;
299         struct pnfs_layout_range range;
300         nfs4_stateid stateid;
301         __u32   layout_type;
302 };
303 
304 struct nfs4_layoutreturn_res {
305         struct nfs4_sequence_res seq_res;
306         u32 lrs_present;
307         nfs4_stateid stateid;
308 };
309 
310 struct nfs4_layoutreturn {
311         struct nfs4_layoutreturn_args args;
312         struct nfs4_layoutreturn_res res;
313         struct rpc_cred *cred;
314         struct nfs_client *clp;
315         struct inode *inode;
316         int rpc_status;
317 };
318 
319 struct stateowner_id {
320         __u64   create_time;
321         __u32   uniquifier;
322 };
323 
324 /*
325  * Arguments to the open call.
326  */
327 struct nfs_openargs {
328         struct nfs4_sequence_args       seq_args;
329         const struct nfs_fh *   fh;
330         struct nfs_seqid *      seqid;
331         int                     open_flags;
332         fmode_t                 fmode;
333         u32                     share_access;
334         u32                     access;
335         __u64                   clientid;
336         struct stateowner_id    id;
337         union {
338                 struct {
339                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
340                         nfs4_verifier   verifier; /* EXCLUSIVE */
341                 };
342                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
343                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
344         } u;
345         const struct qstr *     name;
346         const struct nfs_server *server;         /* Needed for ID mapping */
347         const u32 *             bitmask;
348         const u32 *             open_bitmap;
349         __u32                   claim;
350         enum createmode4        createmode;
351         const struct nfs4_label *label;
352 };
353 
354 struct nfs_openres {
355         struct nfs4_sequence_res        seq_res;
356         nfs4_stateid            stateid;
357         struct nfs_fh           fh;
358         struct nfs4_change_info cinfo;
359         __u32                   rflags;
360         struct nfs_fattr *      f_attr;
361         struct nfs4_label       *f_label;
362         struct nfs_seqid *      seqid;
363         const struct nfs_server *server;
364         fmode_t                 delegation_type;
365         nfs4_stateid            delegation;
366         __u32                   do_recall;
367         __u64                   maxsize;
368         __u32                   attrset[NFS4_BITMAP_SIZE];
369         struct nfs4_string      *owner;
370         struct nfs4_string      *group_owner;
371         __u32                   access_request;
372         __u32                   access_supported;
373         __u32                   access_result;
374 };
375 
376 /*
377  * Arguments to the open_confirm call.
378  */
379 struct nfs_open_confirmargs {
380         struct nfs4_sequence_args       seq_args;
381         const struct nfs_fh *   fh;
382         nfs4_stateid *          stateid;
383         struct nfs_seqid *      seqid;
384 };
385 
386 struct nfs_open_confirmres {
387         struct nfs4_sequence_res        seq_res;
388         nfs4_stateid            stateid;
389         struct nfs_seqid *      seqid;
390 };
391 
392 /*
393  * Arguments to the close call.
394  */
395 struct nfs_closeargs {
396         struct nfs4_sequence_args       seq_args;
397         struct nfs_fh *         fh;
398         nfs4_stateid            stateid;
399         struct nfs_seqid *      seqid;
400         fmode_t                 fmode;
401         u32                     share_access;
402         const u32 *             bitmask;
403 };
404 
405 struct nfs_closeres {
406         struct nfs4_sequence_res        seq_res;
407         nfs4_stateid            stateid;
408         struct nfs_fattr *      fattr;
409         struct nfs_seqid *      seqid;
410         const struct nfs_server *server;
411 };
412 /*
413  *  * Arguments to the lock,lockt, and locku call.
414  *   */
415 struct nfs_lowner {
416         __u64                   clientid;
417         __u64                   id;
418         dev_t                   s_dev;
419 };
420 
421 struct nfs_lock_args {
422         struct nfs4_sequence_args       seq_args;
423         struct nfs_fh *         fh;
424         struct file_lock *      fl;
425         struct nfs_seqid *      lock_seqid;
426         nfs4_stateid            lock_stateid;
427         struct nfs_seqid *      open_seqid;
428         nfs4_stateid            open_stateid;
429         struct nfs_lowner       lock_owner;
430         unsigned char           block : 1;
431         unsigned char           reclaim : 1;
432         unsigned char           new_lock : 1;
433         unsigned char           new_lock_owner : 1;
434 };
435 
436 struct nfs_lock_res {
437         struct nfs4_sequence_res        seq_res;
438         nfs4_stateid            stateid;
439         struct nfs_seqid *      lock_seqid;
440         struct nfs_seqid *      open_seqid;
441 };
442 
443 struct nfs_locku_args {
444         struct nfs4_sequence_args       seq_args;
445         struct nfs_fh *         fh;
446         struct file_lock *      fl;
447         struct nfs_seqid *      seqid;
448         nfs4_stateid            stateid;
449 };
450 
451 struct nfs_locku_res {
452         struct nfs4_sequence_res        seq_res;
453         nfs4_stateid            stateid;
454         struct nfs_seqid *      seqid;
455 };
456 
457 struct nfs_lockt_args {
458         struct nfs4_sequence_args       seq_args;
459         struct nfs_fh *         fh;
460         struct file_lock *      fl;
461         struct nfs_lowner       lock_owner;
462 };
463 
464 struct nfs_lockt_res {
465         struct nfs4_sequence_res        seq_res;
466         struct file_lock *      denied; /* LOCK, LOCKT failed */
467 };
468 
469 struct nfs_release_lockowner_args {
470         struct nfs4_sequence_args       seq_args;
471         struct nfs_lowner       lock_owner;
472 };
473 
474 struct nfs_release_lockowner_res {
475         struct nfs4_sequence_res        seq_res;
476 };
477 
478 struct nfs4_delegreturnargs {
479         struct nfs4_sequence_args       seq_args;
480         const struct nfs_fh *fhandle;
481         const nfs4_stateid *stateid;
482         const u32 * bitmask;
483 };
484 
485 struct nfs4_delegreturnres {
486         struct nfs4_sequence_res        seq_res;
487         struct nfs_fattr * fattr;
488         const struct nfs_server *server;
489 };
490 
491 /*
492  * Arguments to the write call.
493  */
494 struct nfs_write_verifier {
495         char                    data[8];
496 };
497 
498 struct nfs_writeverf {
499         struct nfs_write_verifier verifier;
500         enum nfs3_stable_how    committed;
501 };
502 
503 /*
504  * Arguments shared by the read and write call.
505  */
506 struct nfs_pgio_args {
507         struct nfs4_sequence_args       seq_args;
508         struct nfs_fh *         fh;
509         struct nfs_open_context *context;
510         struct nfs_lock_context *lock_context;
511         nfs4_stateid            stateid;
512         __u64                   offset;
513         __u32                   count;
514         unsigned int            pgbase;
515         struct page **          pages;
516         const u32 *             bitmask;        /* used by write */
517         enum nfs3_stable_how    stable;         /* used by write */
518 };
519 
520 struct nfs_pgio_res {
521         struct nfs4_sequence_res        seq_res;
522         struct nfs_fattr *      fattr;
523         __u32                   count;
524         __u32                   op_status;
525         int                     eof;            /* used by read */
526         struct nfs_writeverf *  verf;           /* used by write */
527         const struct nfs_server *server;        /* used by write */
528 
529 };
530 
531 /*
532  * Arguments to the commit call.
533  */
534 struct nfs_commitargs {
535         struct nfs4_sequence_args       seq_args;
536         struct nfs_fh           *fh;
537         __u64                   offset;
538         __u32                   count;
539         const u32               *bitmask;
540 };
541 
542 struct nfs_commitres {
543         struct nfs4_sequence_res        seq_res;
544         __u32                   op_status;
545         struct nfs_fattr        *fattr;
546         struct nfs_writeverf    *verf;
547         const struct nfs_server *server;
548 };
549 
550 /*
551  * Common arguments to the unlink call
552  */
553 struct nfs_removeargs {
554         struct nfs4_sequence_args       seq_args;
555         const struct nfs_fh     *fh;
556         struct qstr             name;
557 };
558 
559 struct nfs_removeres {
560         struct nfs4_sequence_res        seq_res;
561         const struct nfs_server *server;
562         struct nfs_fattr        *dir_attr;
563         struct nfs4_change_info cinfo;
564 };
565 
566 /*
567  * Common arguments to the rename call
568  */
569 struct nfs_renameargs {
570         struct nfs4_sequence_args       seq_args;
571         const struct nfs_fh             *old_dir;
572         const struct nfs_fh             *new_dir;
573         const struct qstr               *old_name;
574         const struct qstr               *new_name;
575 };
576 
577 struct nfs_renameres {
578         struct nfs4_sequence_res        seq_res;
579         const struct nfs_server         *server;
580         struct nfs4_change_info         old_cinfo;
581         struct nfs_fattr                *old_fattr;
582         struct nfs4_change_info         new_cinfo;
583         struct nfs_fattr                *new_fattr;
584 };
585 
586 /* parsed sec= options */
587 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
588 struct nfs_auth_info {
589         unsigned int            flavor_len;
590         rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
591 };
592 
593 /*
594  * Argument struct for decode_entry function
595  */
596 struct nfs_entry {
597         __u64                   ino;
598         __u64                   cookie,
599                                 prev_cookie;
600         const char *            name;
601         unsigned int            len;
602         int                     eof;
603         struct nfs_fh *         fh;
604         struct nfs_fattr *      fattr;
605         struct nfs4_label  *label;
606         unsigned char           d_type;
607         struct nfs_server *     server;
608 };
609 
610 /*
611  * The following types are for NFSv2 only.
612  */
613 struct nfs_sattrargs {
614         struct nfs_fh *         fh;
615         struct iattr *          sattr;
616 };
617 
618 struct nfs_diropargs {
619         struct nfs_fh *         fh;
620         const char *            name;
621         unsigned int            len;
622 };
623 
624 struct nfs_createargs {
625         struct nfs_fh *         fh;
626         const char *            name;
627         unsigned int            len;
628         struct iattr *          sattr;
629 };
630 
631 struct nfs_setattrargs {
632         struct nfs4_sequence_args       seq_args;
633         struct nfs_fh *                 fh;
634         nfs4_stateid                    stateid;
635         struct iattr *                  iap;
636         const struct nfs_server *       server; /* Needed for name mapping */
637         const u32 *                     bitmask;
638         const struct nfs4_label         *label;
639 };
640 
641 struct nfs_setaclargs {
642         struct nfs4_sequence_args       seq_args;
643         struct nfs_fh *                 fh;
644         size_t                          acl_len;
645         unsigned int                    acl_pgbase;
646         struct page **                  acl_pages;
647 };
648 
649 struct nfs_setaclres {
650         struct nfs4_sequence_res        seq_res;
651 };
652 
653 struct nfs_getaclargs {
654         struct nfs4_sequence_args       seq_args;
655         struct nfs_fh *                 fh;
656         size_t                          acl_len;
657         unsigned int                    acl_pgbase;
658         struct page **                  acl_pages;
659 };
660 
661 /* getxattr ACL interface flags */
662 #define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
663 struct nfs_getaclres {
664         struct nfs4_sequence_res        seq_res;
665         size_t                          acl_len;
666         size_t                          acl_data_offset;
667         int                             acl_flags;
668         struct page *                   acl_scratch;
669 };
670 
671 struct nfs_setattrres {
672         struct nfs4_sequence_res        seq_res;
673         struct nfs_fattr *              fattr;
674         struct nfs4_label               *label;
675         const struct nfs_server *       server;
676 };
677 
678 struct nfs_linkargs {
679         struct nfs_fh *         fromfh;
680         struct nfs_fh *         tofh;
681         const char *            toname;
682         unsigned int            tolen;
683 };
684 
685 struct nfs_symlinkargs {
686         struct nfs_fh *         fromfh;
687         const char *            fromname;
688         unsigned int            fromlen;
689         struct page **          pages;
690         unsigned int            pathlen;
691         struct iattr *          sattr;
692 };
693 
694 struct nfs_readdirargs {
695         struct nfs_fh *         fh;
696         __u32                   cookie;
697         unsigned int            count;
698         struct page **          pages;
699 };
700 
701 struct nfs3_getaclargs {
702         struct nfs_fh *         fh;
703         int                     mask;
704         struct page **          pages;
705 };
706 
707 struct nfs3_setaclargs {
708         struct inode *          inode;
709         int                     mask;
710         struct posix_acl *      acl_access;
711         struct posix_acl *      acl_default;
712         size_t                  len;
713         unsigned int            npages;
714         struct page **          pages;
715 };
716 
717 struct nfs_diropok {
718         struct nfs_fh *         fh;
719         struct nfs_fattr *      fattr;
720 };
721 
722 struct nfs_readlinkargs {
723         struct nfs_fh *         fh;
724         unsigned int            pgbase;
725         unsigned int            pglen;
726         struct page **          pages;
727 };
728 
729 struct nfs3_sattrargs {
730         struct nfs_fh *         fh;
731         struct iattr *          sattr;
732         unsigned int            guard;
733         struct timespec         guardtime;
734 };
735 
736 struct nfs3_diropargs {
737         struct nfs_fh *         fh;
738         const char *            name;
739         unsigned int            len;
740 };
741 
742 struct nfs3_accessargs {
743         struct nfs_fh *         fh;
744         __u32                   access;
745 };
746 
747 struct nfs3_createargs {
748         struct nfs_fh *         fh;
749         const char *            name;
750         unsigned int            len;
751         struct iattr *          sattr;
752         enum nfs3_createmode    createmode;
753         __be32                  verifier[2];
754 };
755 
756 struct nfs3_mkdirargs {
757         struct nfs_fh *         fh;
758         const char *            name;
759         unsigned int            len;
760         struct iattr *          sattr;
761 };
762 
763 struct nfs3_symlinkargs {
764         struct nfs_fh *         fromfh;
765         const char *            fromname;
766         unsigned int            fromlen;
767         struct page **          pages;
768         unsigned int            pathlen;
769         struct iattr *          sattr;
770 };
771 
772 struct nfs3_mknodargs {
773         struct nfs_fh *         fh;
774         const char *            name;
775         unsigned int            len;
776         enum nfs3_ftype         type;
777         struct iattr *          sattr;
778         dev_t                   rdev;
779 };
780 
781 struct nfs3_linkargs {
782         struct nfs_fh *         fromfh;
783         struct nfs_fh *         tofh;
784         const char *            toname;
785         unsigned int            tolen;
786 };
787 
788 struct nfs3_readdirargs {
789         struct nfs_fh *         fh;
790         __u64                   cookie;
791         __be32                  verf[2];
792         int                     plus;
793         unsigned int            count;
794         struct page **          pages;
795 };
796 
797 struct nfs3_diropres {
798         struct nfs_fattr *      dir_attr;
799         struct nfs_fh *         fh;
800         struct nfs_fattr *      fattr;
801 };
802 
803 struct nfs3_accessres {
804         struct nfs_fattr *      fattr;
805         __u32                   access;
806 };
807 
808 struct nfs3_readlinkargs {
809         struct nfs_fh *         fh;
810         unsigned int            pgbase;
811         unsigned int            pglen;
812         struct page **          pages;
813 };
814 
815 struct nfs3_linkres {
816         struct nfs_fattr *      dir_attr;
817         struct nfs_fattr *      fattr;
818 };
819 
820 struct nfs3_readdirres {
821         struct nfs_fattr *      dir_attr;
822         __be32 *                verf;
823         int                     plus;
824 };
825 
826 struct nfs3_getaclres {
827         struct nfs_fattr *      fattr;
828         int                     mask;
829         unsigned int            acl_access_count;
830         unsigned int            acl_default_count;
831         struct posix_acl *      acl_access;
832         struct posix_acl *      acl_default;
833 };
834 
835 #if IS_ENABLED(CONFIG_NFS_V4)
836 
837 typedef u64 clientid4;
838 
839 struct nfs4_accessargs {
840         struct nfs4_sequence_args       seq_args;
841         const struct nfs_fh *           fh;
842         const u32 *                     bitmask;
843         u32                             access;
844 };
845 
846 struct nfs4_accessres {
847         struct nfs4_sequence_res        seq_res;
848         const struct nfs_server *       server;
849         struct nfs_fattr *              fattr;
850         u32                             supported;
851         u32                             access;
852 };
853 
854 struct nfs4_create_arg {
855         struct nfs4_sequence_args       seq_args;
856         u32                             ftype;
857         union {
858                 struct {
859                         struct page **  pages;
860                         unsigned int    len;
861                 } symlink;   /* NF4LNK */
862                 struct {
863                         u32             specdata1;
864                         u32             specdata2;
865                 } device;    /* NF4BLK, NF4CHR */
866         } u;
867         const struct qstr *             name;
868         const struct nfs_server *       server;
869         const struct iattr *            attrs;
870         const struct nfs_fh *           dir_fh;
871         const u32 *                     bitmask;
872         const struct nfs4_label         *label;
873 };
874 
875 struct nfs4_create_res {
876         struct nfs4_sequence_res        seq_res;
877         const struct nfs_server *       server;
878         struct nfs_fh *                 fh;
879         struct nfs_fattr *              fattr;
880         struct nfs4_label               *label;
881         struct nfs4_change_info         dir_cinfo;
882 };
883 
884 struct nfs4_fsinfo_arg {
885         struct nfs4_sequence_args       seq_args;
886         const struct nfs_fh *           fh;
887         const u32 *                     bitmask;
888 };
889 
890 struct nfs4_fsinfo_res {
891         struct nfs4_sequence_res        seq_res;
892         struct nfs_fsinfo              *fsinfo;
893 };
894 
895 struct nfs4_getattr_arg {
896         struct nfs4_sequence_args       seq_args;
897         const struct nfs_fh *           fh;
898         const u32 *                     bitmask;
899 };
900 
901 struct nfs4_getattr_res {
902         struct nfs4_sequence_res        seq_res;
903         const struct nfs_server *       server;
904         struct nfs_fattr *              fattr;
905         struct nfs4_label               *label;
906 };
907 
908 struct nfs4_link_arg {
909         struct nfs4_sequence_args       seq_args;
910         const struct nfs_fh *           fh;
911         const struct nfs_fh *           dir_fh;
912         const struct qstr *             name;
913         const u32 *                     bitmask;
914 };
915 
916 struct nfs4_link_res {
917         struct nfs4_sequence_res        seq_res;
918         const struct nfs_server *       server;
919         struct nfs_fattr *              fattr;
920         struct nfs4_label               *label;
921         struct nfs4_change_info         cinfo;
922         struct nfs_fattr *              dir_attr;
923 };
924 
925 
926 struct nfs4_lookup_arg {
927         struct nfs4_sequence_args       seq_args;
928         const struct nfs_fh *           dir_fh;
929         const struct qstr *             name;
930         const u32 *                     bitmask;
931 };
932 
933 struct nfs4_lookup_res {
934         struct nfs4_sequence_res        seq_res;
935         const struct nfs_server *       server;
936         struct nfs_fattr *              fattr;
937         struct nfs_fh *                 fh;
938         struct nfs4_label               *label;
939 };
940 
941 struct nfs4_lookup_root_arg {
942         struct nfs4_sequence_args       seq_args;
943         const u32 *                     bitmask;
944 };
945 
946 struct nfs4_pathconf_arg {
947         struct nfs4_sequence_args       seq_args;
948         const struct nfs_fh *           fh;
949         const u32 *                     bitmask;
950 };
951 
952 struct nfs4_pathconf_res {
953         struct nfs4_sequence_res        seq_res;
954         struct nfs_pathconf            *pathconf;
955 };
956 
957 struct nfs4_readdir_arg {
958         struct nfs4_sequence_args       seq_args;
959         const struct nfs_fh *           fh;
960         u64                             cookie;
961         nfs4_verifier                   verifier;
962         u32                             count;
963         struct page **                  pages;  /* zero-copy data */
964         unsigned int                    pgbase; /* zero-copy data */
965         const u32 *                     bitmask;
966         int                             plus;
967 };
968 
969 struct nfs4_readdir_res {
970         struct nfs4_sequence_res        seq_res;
971         nfs4_verifier                   verifier;
972         unsigned int                    pgbase;
973 };
974 
975 struct nfs4_readlink {
976         struct nfs4_sequence_args       seq_args;
977         const struct nfs_fh *           fh;
978         unsigned int                    pgbase;
979         unsigned int                    pglen;   /* zero-copy data */
980         struct page **                  pages;   /* zero-copy data */
981 };
982 
983 struct nfs4_readlink_res {
984         struct nfs4_sequence_res        seq_res;
985 };
986 
987 #define NFS4_SETCLIENTID_NAMELEN        (127)
988 struct nfs4_setclientid {
989         const nfs4_verifier *           sc_verifier;
990         unsigned int                    sc_name_len;
991         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
992         u32                             sc_prog;
993         unsigned int                    sc_netid_len;
994         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
995         unsigned int                    sc_uaddr_len;
996         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
997         u32                             sc_cb_ident;
998         struct rpc_cred                 *sc_cred;
999 };
1000 
1001 struct nfs4_setclientid_res {
1002         u64                             clientid;
1003         nfs4_verifier                   confirm;
1004 };
1005 
1006 struct nfs4_statfs_arg {
1007         struct nfs4_sequence_args       seq_args;
1008         const struct nfs_fh *           fh;
1009         const u32 *                     bitmask;
1010 };
1011 
1012 struct nfs4_statfs_res {
1013         struct nfs4_sequence_res        seq_res;
1014         struct nfs_fsstat              *fsstat;
1015 };
1016 
1017 struct nfs4_server_caps_arg {
1018         struct nfs4_sequence_args       seq_args;
1019         struct nfs_fh                  *fhandle;
1020 };
1021 
1022 struct nfs4_server_caps_res {
1023         struct nfs4_sequence_res        seq_res;
1024         u32                             attr_bitmask[3];
1025         u32                             acl_bitmask;
1026         u32                             has_links;
1027         u32                             has_symlinks;
1028         u32                             fh_expire_type;
1029 };
1030 
1031 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1032 struct nfs4_pathname {
1033         unsigned int ncomponents;
1034         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1035 };
1036 
1037 #define NFS4_FS_LOCATION_MAXSERVERS 10
1038 struct nfs4_fs_location {
1039         unsigned int nservers;
1040         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1041         struct nfs4_pathname rootpath;
1042 };
1043 
1044 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1045 struct nfs4_fs_locations {
1046         struct nfs_fattr fattr;
1047         const struct nfs_server *server;
1048         struct nfs4_pathname fs_path;
1049         int nlocations;
1050         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1051 };
1052 
1053 struct nfs4_fs_locations_arg {
1054         struct nfs4_sequence_args       seq_args;
1055         const struct nfs_fh *dir_fh;
1056         const struct nfs_fh *fh;
1057         const struct qstr *name;
1058         struct page *page;
1059         const u32 *bitmask;
1060         clientid4 clientid;
1061         unsigned char migration:1, renew:1;
1062 };
1063 
1064 struct nfs4_fs_locations_res {
1065         struct nfs4_sequence_res        seq_res;
1066         struct nfs4_fs_locations       *fs_locations;
1067         unsigned char                   migration:1, renew:1;
1068 };
1069 
1070 struct nfs4_secinfo4 {
1071         u32                     flavor;
1072         struct rpcsec_gss_info  flavor_info;
1073 };
1074 
1075 struct nfs4_secinfo_flavors {
1076         unsigned int            num_flavors;
1077         struct nfs4_secinfo4    flavors[0];
1078 };
1079 
1080 struct nfs4_secinfo_arg {
1081         struct nfs4_sequence_args       seq_args;
1082         const struct nfs_fh             *dir_fh;
1083         const struct qstr               *name;
1084 };
1085 
1086 struct nfs4_secinfo_res {
1087         struct nfs4_sequence_res        seq_res;
1088         struct nfs4_secinfo_flavors     *flavors;
1089 };
1090 
1091 struct nfs4_fsid_present_arg {
1092         struct nfs4_sequence_args       seq_args;
1093         const struct nfs_fh             *fh;
1094         clientid4                       clientid;
1095         unsigned char                   renew:1;
1096 };
1097 
1098 struct nfs4_fsid_present_res {
1099         struct nfs4_sequence_res        seq_res;
1100         struct nfs_fh                   *fh;
1101         unsigned char                   renew:1;
1102 };
1103 
1104 #endif /* CONFIG_NFS_V4 */
1105 
1106 struct nfstime4 {
1107         u64     seconds;
1108         u32     nseconds;
1109 };
1110 
1111 #ifdef CONFIG_NFS_V4_1
1112 
1113 struct pnfs_commit_bucket {
1114         struct list_head written;
1115         struct list_head committing;
1116         struct pnfs_layout_segment *wlseg;
1117         struct pnfs_layout_segment *clseg;
1118         struct nfs_writeverf direct_verf;
1119 };
1120 
1121 struct pnfs_ds_commit_info {
1122         int nwritten;
1123         int ncommitting;
1124         int nbuckets;
1125         struct pnfs_commit_bucket *buckets;
1126 };
1127 
1128 #define NFS4_OP_MAP_NUM_LONGS \
1129         DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1130 #define NFS4_OP_MAP_NUM_WORDS \
1131         (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1132 struct nfs4_op_map {
1133         union {
1134                 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1135                 u32 words[NFS4_OP_MAP_NUM_WORDS];
1136         } u;
1137 };
1138 
1139 struct nfs41_state_protection {
1140         u32 how;
1141         struct nfs4_op_map enforce;
1142         struct nfs4_op_map allow;
1143 };
1144 
1145 #define NFS4_EXCHANGE_ID_LEN    (127)
1146 struct nfs41_exchange_id_args {
1147         struct nfs_client               *client;
1148         nfs4_verifier                   *verifier;
1149         unsigned int                    id_len;
1150         char                            id[NFS4_EXCHANGE_ID_LEN];
1151         u32                             flags;
1152         struct nfs41_state_protection   state_protect;
1153 };
1154 
1155 struct nfs41_server_owner {
1156         uint64_t                        minor_id;
1157         uint32_t                        major_id_sz;
1158         char                            major_id[NFS4_OPAQUE_LIMIT];
1159 };
1160 
1161 struct nfs41_server_scope {
1162         uint32_t                        server_scope_sz;
1163         char                            server_scope[NFS4_OPAQUE_LIMIT];
1164 };
1165 
1166 struct nfs41_impl_id {
1167         char                            domain[NFS4_OPAQUE_LIMIT + 1];
1168         char                            name[NFS4_OPAQUE_LIMIT + 1];
1169         struct nfstime4                 date;
1170 };
1171 
1172 struct nfs41_bind_conn_to_session_args {
1173         struct nfs_client               *client;
1174         struct nfs4_sessionid           sessionid;
1175         u32                             dir;
1176         bool                            use_conn_in_rdma_mode;
1177 };
1178 
1179 struct nfs41_bind_conn_to_session_res {
1180         struct nfs4_sessionid           sessionid;
1181         u32                             dir;
1182         bool                            use_conn_in_rdma_mode;
1183 };
1184 
1185 struct nfs41_exchange_id_res {
1186         u64                             clientid;
1187         u32                             seqid;
1188         u32                             flags;
1189         struct nfs41_server_owner       *server_owner;
1190         struct nfs41_server_scope       *server_scope;
1191         struct nfs41_impl_id            *impl_id;
1192         struct nfs41_state_protection   state_protect;
1193 };
1194 
1195 struct nfs41_create_session_args {
1196         struct nfs_client              *client;
1197         u64                             clientid;
1198         uint32_t                        seqid;
1199         uint32_t                        flags;
1200         uint32_t                        cb_program;
1201         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1202         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1203 };
1204 
1205 struct nfs41_create_session_res {
1206         struct nfs4_sessionid           sessionid;
1207         uint32_t                        seqid;
1208         uint32_t                        flags;
1209         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1210         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1211 };
1212 
1213 struct nfs41_reclaim_complete_args {
1214         struct nfs4_sequence_args       seq_args;
1215         /* In the future extend to include curr_fh for use with migration */
1216         unsigned char                   one_fs:1;
1217 };
1218 
1219 struct nfs41_reclaim_complete_res {
1220         struct nfs4_sequence_res        seq_res;
1221 };
1222 
1223 #define SECINFO_STYLE_CURRENT_FH 0
1224 #define SECINFO_STYLE_PARENT 1
1225 struct nfs41_secinfo_no_name_args {
1226         struct nfs4_sequence_args       seq_args;
1227         int                             style;
1228 };
1229 
1230 struct nfs41_test_stateid_args {
1231         struct nfs4_sequence_args       seq_args;
1232         nfs4_stateid                    *stateid;
1233 };
1234 
1235 struct nfs41_test_stateid_res {
1236         struct nfs4_sequence_res        seq_res;
1237         unsigned int                    status;
1238 };
1239 
1240 struct nfs41_free_stateid_args {
1241         struct nfs4_sequence_args       seq_args;
1242         nfs4_stateid                    stateid;
1243 };
1244 
1245 struct nfs41_free_stateid_res {
1246         struct nfs4_sequence_res        seq_res;
1247         unsigned int                    status;
1248 };
1249 
1250 static inline void
1251 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1252 {
1253         kfree(cinfo->buckets);
1254 }
1255 
1256 #else
1257 
1258 struct pnfs_ds_commit_info {
1259 };
1260 
1261 static inline void
1262 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1263 {
1264 }
1265 
1266 #endif /* CONFIG_NFS_V4_1 */
1267 
1268 #ifdef CONFIG_NFS_V4_2
1269 struct nfs42_falloc_args {
1270         struct nfs4_sequence_args       seq_args;
1271 
1272         struct nfs_fh                   *falloc_fh;
1273         nfs4_stateid                     falloc_stateid;
1274         u64                              falloc_offset;
1275         u64                              falloc_length;
1276         const u32                       *falloc_bitmask;
1277 };
1278 
1279 struct nfs42_falloc_res {
1280         struct nfs4_sequence_res        seq_res;
1281         unsigned int                    status;
1282 
1283         struct nfs_fattr                *falloc_fattr;
1284         const struct nfs_server         *falloc_server;
1285 };
1286 
1287 struct nfs42_seek_args {
1288         struct nfs4_sequence_args       seq_args;
1289 
1290         struct nfs_fh                   *sa_fh;
1291         nfs4_stateid                    sa_stateid;
1292         u64                             sa_offset;
1293         u32                             sa_what;
1294 };
1295 
1296 struct nfs42_seek_res {
1297         struct nfs4_sequence_res        seq_res;
1298         unsigned int                    status;
1299 
1300         u32     sr_eof;
1301         u64     sr_offset;
1302 };
1303 #endif
1304 
1305 struct nfs_page;
1306 
1307 #define NFS_PAGEVEC_SIZE        (8U)
1308 
1309 struct nfs_page_array {
1310         struct page             **pagevec;
1311         unsigned int            npages;         /* Max length of pagevec */
1312         struct page             *page_array[NFS_PAGEVEC_SIZE];
1313 };
1314 
1315 /* used as flag bits in nfs_pgio_header */
1316 enum {
1317         NFS_IOHDR_ERROR = 0,
1318         NFS_IOHDR_EOF,
1319         NFS_IOHDR_REDO,
1320 };
1321 
1322 struct nfs_pgio_header {
1323         struct inode            *inode;
1324         struct rpc_cred         *cred;
1325         struct list_head        pages;
1326         struct nfs_page         *req;
1327         struct nfs_writeverf    verf;           /* Used for writes */
1328         struct pnfs_layout_segment *lseg;
1329         loff_t                  io_start;
1330         const struct rpc_call_ops *mds_ops;
1331         void (*release) (struct nfs_pgio_header *hdr);
1332         const struct nfs_pgio_completion_ops *completion_ops;
1333         const struct nfs_rw_ops *rw_ops;
1334         struct nfs_direct_req   *dreq;
1335         void                    *layout_private;
1336         spinlock_t              lock;
1337         /* fields protected by lock */
1338         int                     pnfs_error;
1339         int                     error;          /* merge with pnfs_error */
1340         unsigned long           good_bytes;     /* boundary of good data */
1341         unsigned long           flags;
1342 
1343         /*
1344          * rpc data
1345          */
1346         struct rpc_task         task;
1347         struct nfs_fattr        fattr;
1348         struct nfs_pgio_args    args;           /* argument struct */
1349         struct nfs_pgio_res     res;            /* result struct */
1350         unsigned long           timestamp;      /* For lease renewal */
1351         int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1352         __u64                   mds_offset;     /* Filelayout dense stripe */
1353         struct nfs_page_array   page_array;
1354         struct nfs_client       *ds_clp;        /* pNFS data server */
1355         int                     ds_commit_idx;  /* ds index if ds_clp is set */
1356         int                     pgio_mirror_idx;/* mirror index in pgio layer */
1357 };
1358 
1359 struct nfs_mds_commit_info {
1360         atomic_t rpcs_out;
1361         unsigned long           ncommit;
1362         struct list_head        list;
1363 };
1364 
1365 struct nfs_commit_data;
1366 struct nfs_inode;
1367 struct nfs_commit_completion_ops {
1368         void (*error_cleanup) (struct nfs_inode *nfsi);
1369         void (*completion) (struct nfs_commit_data *data);
1370 };
1371 
1372 struct nfs_commit_info {
1373         spinlock_t                      *lock;  /* inode->i_lock */
1374         struct nfs_mds_commit_info      *mds;
1375         struct pnfs_ds_commit_info      *ds;
1376         struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1377         const struct nfs_commit_completion_ops *completion_ops;
1378 };
1379 
1380 struct nfs_commit_data {
1381         struct rpc_task         task;
1382         struct inode            *inode;
1383         struct rpc_cred         *cred;
1384         struct nfs_fattr        fattr;
1385         struct nfs_writeverf    verf;
1386         struct list_head        pages;          /* Coalesced requests we wish to flush */
1387         struct list_head        list;           /* lists of struct nfs_write_data */
1388         struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1389         struct nfs_commitargs   args;           /* argument struct */
1390         struct nfs_commitres    res;            /* result struct */
1391         struct nfs_open_context *context;
1392         struct pnfs_layout_segment *lseg;
1393         struct nfs_client       *ds_clp;        /* pNFS data server */
1394         int                     ds_commit_index;
1395         loff_t                  lwb;
1396         const struct rpc_call_ops *mds_ops;
1397         const struct nfs_commit_completion_ops *completion_ops;
1398         int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1399 };
1400 
1401 struct nfs_pgio_completion_ops {
1402         void    (*error_cleanup)(struct list_head *head);
1403         void    (*init_hdr)(struct nfs_pgio_header *hdr);
1404         void    (*completion)(struct nfs_pgio_header *hdr);
1405 };
1406 
1407 struct nfs_unlinkdata {
1408         struct hlist_node list;
1409         struct nfs_removeargs args;
1410         struct nfs_removeres res;
1411         struct inode *dir;
1412         struct rpc_cred *cred;
1413         struct nfs_fattr dir_attr;
1414         long timeout;
1415 };
1416 
1417 struct nfs_renamedata {
1418         struct nfs_renameargs   args;
1419         struct nfs_renameres    res;
1420         struct rpc_cred         *cred;
1421         struct inode            *old_dir;
1422         struct dentry           *old_dentry;
1423         struct nfs_fattr        old_fattr;
1424         struct inode            *new_dir;
1425         struct dentry           *new_dentry;
1426         struct nfs_fattr        new_fattr;
1427         void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1428         long timeout;
1429 };
1430 
1431 struct nfs_access_entry;
1432 struct nfs_client;
1433 struct rpc_timeout;
1434 struct nfs_subversion;
1435 struct nfs_mount_info;
1436 struct nfs_client_initdata;
1437 struct nfs_pageio_descriptor;
1438 
1439 /*
1440  * RPC procedure vector for NFSv2/NFSv3 demuxing
1441  */
1442 struct nfs_rpc_ops {
1443         u32     version;                /* Protocol version */
1444         const struct dentry_operations *dentry_ops;
1445         const struct inode_operations *dir_inode_ops;
1446         const struct inode_operations *file_inode_ops;
1447         const struct file_operations *file_ops;
1448 
1449         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1450                             struct nfs_fsinfo *);
1451         struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1452                                       struct nfs_fh *, struct nfs_fattr *);
1453         struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1454                                      struct nfs_subversion *);
1455         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1456                             struct nfs_fattr *, struct nfs4_label *);
1457         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1458                             struct iattr *);
1459         int     (*lookup)  (struct inode *, struct qstr *,
1460                             struct nfs_fh *, struct nfs_fattr *,
1461                             struct nfs4_label *);
1462         int     (*access)  (struct inode *, struct nfs_access_entry *);
1463         int     (*readlink)(struct inode *, struct page *, unsigned int,
1464                             unsigned int);
1465         int     (*create)  (struct inode *, struct dentry *,
1466                             struct iattr *, int);
1467         int     (*remove)  (struct inode *, struct qstr *);
1468         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1469         void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1470         int     (*unlink_done) (struct rpc_task *, struct inode *);
1471         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1472         void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1473         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1474         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1475         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1476                             unsigned int, struct iattr *);
1477         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1478         int     (*rmdir)   (struct inode *, struct qstr *);
1479         int     (*readdir) (struct dentry *, struct rpc_cred *,
1480                             u64, struct page **, unsigned int, int);
1481         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1482                             dev_t);
1483         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1484                             struct nfs_fsstat *);
1485         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1486                             struct nfs_fsinfo *);
1487         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1488                              struct nfs_pathconf *);
1489         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1490         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1491         int     (*pgio_rpc_prepare)(struct rpc_task *,
1492                                     struct nfs_pgio_header *);
1493         void    (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1494         int     (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1495         void    (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1496         int     (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1497         void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1498         void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1499         int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1500         int     (*lock)(struct file *, int, struct file_lock *);
1501         int     (*lock_check_bounds)(const struct file_lock *);
1502         void    (*clear_acl_cache)(struct inode *);
1503         void    (*close_context)(struct nfs_open_context *ctx, int);
1504         struct inode * (*open_context) (struct inode *dir,
1505                                 struct nfs_open_context *ctx,
1506                                 int open_flags,
1507                                 struct iattr *iattr,
1508                                 int *);
1509         int (*have_delegation)(struct inode *, fmode_t);
1510         int (*return_delegation)(struct inode *);
1511         struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1512         struct nfs_client *
1513                 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1514                                 const char *);
1515         void    (*free_client) (struct nfs_client *);
1516         struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1517         struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1518                                            struct nfs_fattr *, rpc_authflavor_t);
1519 };
1520 
1521 /*
1522  *      NFS_CALL(getattr, inode, (fattr));
1523  * into
1524  *      NFS_PROTO(inode)->getattr(fattr);
1525  */
1526 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1527 
1528 /*
1529  * Function vectors etc. for the NFS client
1530  */
1531 extern const struct nfs_rpc_ops nfs_v2_clientops;
1532 extern const struct nfs_rpc_ops nfs_v3_clientops;
1533 extern const struct nfs_rpc_ops nfs_v4_clientops;
1534 extern const struct rpc_version nfs_version2;
1535 extern const struct rpc_version nfs_version3;
1536 extern const struct rpc_version nfs_version4;
1537 
1538 extern const struct rpc_version nfsacl_version3;
1539 extern const struct rpc_program nfsacl_program;
1540 
1541 #endif
1542 

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