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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  * Maximal number of supported layout drivers.
129  */
130 #define NFS_MAX_LAYOUT_TYPES 8
131 
132 /*
133  * Info on the file system
134  */
135 struct nfs_fsinfo {
136         struct nfs_fattr        *fattr; /* Post-op attributes */
137         __u32                   rtmax;  /* max.  read transfer size */
138         __u32                   rtpref; /* pref. read transfer size */
139         __u32                   rtmult; /* reads should be multiple of this */
140         __u32                   wtmax;  /* max.  write transfer size */
141         __u32                   wtpref; /* pref. write transfer size */
142         __u32                   wtmult; /* writes should be multiple of this */
143         __u32                   dtpref; /* pref. readdir transfer size */
144         __u64                   maxfilesize;
145         struct timespec         time_delta; /* server time granularity */
146         __u32                   lease_time; /* in seconds */
147         __u32                   nlayouttypes; /* number of layouttypes */
148         __u32                   layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */
149         __u32                   blksize; /* preferred pnfs io block size */
150         __u32                   clone_blksize; /* granularity of a CLONE operation */
151 };
152 
153 struct nfs_fsstat {
154         struct nfs_fattr        *fattr; /* Post-op attributes */
155         __u64                   tbytes; /* total size in bytes */
156         __u64                   fbytes; /* # of free bytes */
157         __u64                   abytes; /* # of bytes available to user */
158         __u64                   tfiles; /* # of files */
159         __u64                   ffiles; /* # of free files */
160         __u64                   afiles; /* # of files available to user */
161 };
162 
163 struct nfs2_fsstat {
164         __u32                   tsize;  /* Server transfer size */
165         __u32                   bsize;  /* Filesystem block size */
166         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
167         __u32                   bfree;  /* No. of free "bsize" blocks */
168         __u32                   bavail; /* No. of available "bsize" blocks */
169 };
170 
171 struct nfs_pathconf {
172         struct nfs_fattr        *fattr; /* Post-op attributes */
173         __u32                   max_link; /* max # of hard links */
174         __u32                   max_namelen; /* max name length */
175 };
176 
177 struct nfs4_change_info {
178         u32                     atomic;
179         u64                     before;
180         u64                     after;
181 };
182 
183 struct nfs_seqid;
184 
185 /* nfs41 sessions channel attributes */
186 struct nfs4_channel_attrs {
187         u32                     max_rqst_sz;
188         u32                     max_resp_sz;
189         u32                     max_resp_sz_cached;
190         u32                     max_ops;
191         u32                     max_reqs;
192 };
193 
194 struct nfs4_slot;
195 struct nfs4_sequence_args {
196         struct nfs4_slot        *sa_slot;
197         u8                      sa_cache_this : 1,
198                                 sa_privileged : 1;
199 };
200 
201 struct nfs4_sequence_res {
202         struct nfs4_slot        *sr_slot;       /* slot used to send request */
203         unsigned long           sr_timestamp;
204         int                     sr_status;      /* sequence operation status */
205         u32                     sr_status_flags;
206         u32                     sr_highest_slotid;
207         u32                     sr_target_highest_slotid;
208 };
209 
210 struct nfs4_get_lease_time_args {
211         struct nfs4_sequence_args       la_seq_args;
212 };
213 
214 struct nfs4_get_lease_time_res {
215         struct nfs4_sequence_res        lr_seq_res;
216         struct nfs_fsinfo              *lr_fsinfo;
217 };
218 
219 struct xdr_stream;
220 struct nfs4_xdr_opaque_data;
221 
222 struct nfs4_xdr_opaque_ops {
223         void (*encode)(struct xdr_stream *, const void *args,
224                         const struct nfs4_xdr_opaque_data *);
225         void (*free)(struct nfs4_xdr_opaque_data *);
226 };
227 
228 struct nfs4_xdr_opaque_data {
229         const struct nfs4_xdr_opaque_ops *ops;
230         void *data;
231 };
232 
233 #define PNFS_LAYOUT_MAXSIZE 4096
234 
235 struct nfs4_layoutdriver_data {
236         struct page **pages;
237         __u32 pglen;
238         __u32 len;
239 };
240 
241 struct pnfs_layout_range {
242         u32 iomode;
243         u64 offset;
244         u64 length;
245 };
246 
247 struct nfs4_layoutget_args {
248         struct nfs4_sequence_args seq_args;
249         __u32 type;
250         struct pnfs_layout_range range;
251         __u64 minlength;
252         __u32 maxcount;
253         struct inode *inode;
254         struct nfs_open_context *ctx;
255         nfs4_stateid stateid;
256         struct nfs4_layoutdriver_data layout;
257 };
258 
259 struct nfs4_layoutget_res {
260         struct nfs4_sequence_res seq_res;
261         __u32 return_on_close;
262         struct pnfs_layout_range range;
263         __u32 type;
264         nfs4_stateid stateid;
265         struct nfs4_layoutdriver_data *layoutp;
266 };
267 
268 struct nfs4_layoutget {
269         struct nfs4_layoutget_args args;
270         struct nfs4_layoutget_res res;
271         struct rpc_cred *cred;
272         gfp_t gfp_flags;
273 };
274 
275 struct nfs4_getdeviceinfo_args {
276         struct nfs4_sequence_args seq_args;
277         struct pnfs_device *pdev;
278         __u32 notify_types;
279 };
280 
281 struct nfs4_getdeviceinfo_res {
282         struct nfs4_sequence_res seq_res;
283         struct pnfs_device *pdev;
284         __u32 notification;
285 };
286 
287 struct nfs4_layoutcommit_args {
288         struct nfs4_sequence_args seq_args;
289         nfs4_stateid stateid;
290         __u64 lastbytewritten;
291         struct inode *inode;
292         const u32 *bitmask;
293         size_t layoutupdate_len;
294         struct page *layoutupdate_page;
295         struct page **layoutupdate_pages;
296         __be32 *start_p;
297 };
298 
299 struct nfs4_layoutcommit_res {
300         struct nfs4_sequence_res seq_res;
301         struct nfs_fattr *fattr;
302         const struct nfs_server *server;
303         int status;
304 };
305 
306 struct nfs4_layoutcommit_data {
307         struct rpc_task task;
308         struct nfs_fattr fattr;
309         struct list_head lseg_list;
310         struct rpc_cred *cred;
311         struct inode *inode;
312         struct nfs4_layoutcommit_args args;
313         struct nfs4_layoutcommit_res res;
314 };
315 
316 struct nfs4_layoutreturn_args {
317         struct nfs4_sequence_args seq_args;
318         struct pnfs_layout_hdr *layout;
319         struct inode *inode;
320         struct pnfs_layout_range range;
321         nfs4_stateid stateid;
322         __u32   layout_type;
323         struct nfs4_xdr_opaque_data *ld_private;
324 };
325 
326 struct nfs4_layoutreturn_res {
327         struct nfs4_sequence_res seq_res;
328         u32 lrs_present;
329         nfs4_stateid stateid;
330 };
331 
332 struct nfs4_layoutreturn {
333         struct nfs4_layoutreturn_args args;
334         struct nfs4_layoutreturn_res res;
335         struct rpc_cred *cred;
336         struct nfs_client *clp;
337         struct inode *inode;
338         int rpc_status;
339         struct nfs4_xdr_opaque_data ld_private;
340 };
341 
342 #define PNFS_LAYOUTSTATS_MAXSIZE 256
343 
344 struct nfs42_layoutstat_args;
345 struct nfs42_layoutstat_devinfo;
346 typedef void (*layoutstats_encode_t)(struct xdr_stream *,
347                 struct nfs42_layoutstat_args *,
348                 struct nfs42_layoutstat_devinfo *);
349 
350 /* Per file per deviceid layoutstats */
351 struct nfs42_layoutstat_devinfo {
352         struct nfs4_deviceid dev_id;
353         __u64 offset;
354         __u64 length;
355         __u64 read_count;
356         __u64 read_bytes;
357         __u64 write_count;
358         __u64 write_bytes;
359         __u32 layout_type;
360         struct nfs4_xdr_opaque_data ld_private;
361 };
362 
363 struct nfs42_layoutstat_args {
364         struct nfs4_sequence_args seq_args;
365         struct nfs_fh *fh;
366         struct inode *inode;
367         nfs4_stateid stateid;
368         int num_dev;
369         struct nfs42_layoutstat_devinfo *devinfo;
370 };
371 
372 struct nfs42_layoutstat_res {
373         struct nfs4_sequence_res seq_res;
374         int num_dev;
375         int rpc_status;
376 };
377 
378 struct nfs42_layoutstat_data {
379         struct inode *inode;
380         struct nfs42_layoutstat_args args;
381         struct nfs42_layoutstat_res res;
382 };
383 
384 struct nfs42_clone_args {
385         struct nfs4_sequence_args       seq_args;
386         struct nfs_fh                   *src_fh;
387         struct nfs_fh                   *dst_fh;
388         nfs4_stateid                    src_stateid;
389         nfs4_stateid                    dst_stateid;
390         __u64                           src_offset;
391         __u64                           dst_offset;
392         __u64                           count;
393         const u32                       *dst_bitmask;
394 };
395 
396 struct nfs42_clone_res {
397         struct nfs4_sequence_res        seq_res;
398         unsigned int                    rpc_status;
399         struct nfs_fattr                *dst_fattr;
400         const struct nfs_server         *server;
401 };
402 
403 struct stateowner_id {
404         __u64   create_time;
405         __u32   uniquifier;
406 };
407 
408 /*
409  * Arguments to the open call.
410  */
411 struct nfs_openargs {
412         struct nfs4_sequence_args       seq_args;
413         const struct nfs_fh *   fh;
414         struct nfs_seqid *      seqid;
415         int                     open_flags;
416         fmode_t                 fmode;
417         u32                     share_access;
418         u32                     access;
419         __u64                   clientid;
420         struct stateowner_id    id;
421         union {
422                 struct {
423                         struct iattr *  attrs;    /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
424                         nfs4_verifier   verifier; /* EXCLUSIVE */
425                 };
426                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
427                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
428         } u;
429         const struct qstr *     name;
430         const struct nfs_server *server;         /* Needed for ID mapping */
431         const u32 *             bitmask;
432         const u32 *             open_bitmap;
433         enum open_claim_type4   claim;
434         enum createmode4        createmode;
435         const struct nfs4_label *label;
436         umode_t                 umask;
437 };
438 
439 struct nfs_openres {
440         struct nfs4_sequence_res        seq_res;
441         nfs4_stateid            stateid;
442         struct nfs_fh           fh;
443         struct nfs4_change_info cinfo;
444         __u32                   rflags;
445         struct nfs_fattr *      f_attr;
446         struct nfs4_label       *f_label;
447         struct nfs_seqid *      seqid;
448         const struct nfs_server *server;
449         fmode_t                 delegation_type;
450         nfs4_stateid            delegation;
451         unsigned long           pagemod_limit;
452         __u32                   do_recall;
453         __u32                   attrset[NFS4_BITMAP_SIZE];
454         struct nfs4_string      *owner;
455         struct nfs4_string      *group_owner;
456         __u32                   access_request;
457         __u32                   access_supported;
458         __u32                   access_result;
459 };
460 
461 /*
462  * Arguments to the open_confirm call.
463  */
464 struct nfs_open_confirmargs {
465         struct nfs4_sequence_args       seq_args;
466         const struct nfs_fh *   fh;
467         nfs4_stateid *          stateid;
468         struct nfs_seqid *      seqid;
469 };
470 
471 struct nfs_open_confirmres {
472         struct nfs4_sequence_res        seq_res;
473         nfs4_stateid            stateid;
474         struct nfs_seqid *      seqid;
475 };
476 
477 /*
478  * Arguments to the close call.
479  */
480 struct nfs_closeargs {
481         struct nfs4_sequence_args       seq_args;
482         struct nfs_fh *         fh;
483         nfs4_stateid            stateid;
484         struct nfs_seqid *      seqid;
485         fmode_t                 fmode;
486         u32                     share_access;
487         const u32 *             bitmask;
488         struct nfs4_layoutreturn_args *lr_args;
489 };
490 
491 struct nfs_closeres {
492         struct nfs4_sequence_res        seq_res;
493         nfs4_stateid            stateid;
494         struct nfs_fattr *      fattr;
495         struct nfs_seqid *      seqid;
496         const struct nfs_server *server;
497         struct nfs4_layoutreturn_res *lr_res;
498         int lr_ret;
499 };
500 /*
501  *  * Arguments to the lock,lockt, and locku call.
502  *   */
503 struct nfs_lowner {
504         __u64                   clientid;
505         __u64                   id;
506         dev_t                   s_dev;
507 };
508 
509 struct nfs_lock_args {
510         struct nfs4_sequence_args       seq_args;
511         struct nfs_fh *         fh;
512         struct file_lock *      fl;
513         struct nfs_seqid *      lock_seqid;
514         nfs4_stateid            lock_stateid;
515         struct nfs_seqid *      open_seqid;
516         nfs4_stateid            open_stateid;
517         struct nfs_lowner       lock_owner;
518         unsigned char           block : 1;
519         unsigned char           reclaim : 1;
520         unsigned char           new_lock : 1;
521         unsigned char           new_lock_owner : 1;
522 };
523 
524 struct nfs_lock_res {
525         struct nfs4_sequence_res        seq_res;
526         nfs4_stateid            stateid;
527         struct nfs_seqid *      lock_seqid;
528         struct nfs_seqid *      open_seqid;
529 };
530 
531 struct nfs_locku_args {
532         struct nfs4_sequence_args       seq_args;
533         struct nfs_fh *         fh;
534         struct file_lock *      fl;
535         struct nfs_seqid *      seqid;
536         nfs4_stateid            stateid;
537 };
538 
539 struct nfs_locku_res {
540         struct nfs4_sequence_res        seq_res;
541         nfs4_stateid            stateid;
542         struct nfs_seqid *      seqid;
543 };
544 
545 struct nfs_lockt_args {
546         struct nfs4_sequence_args       seq_args;
547         struct nfs_fh *         fh;
548         struct file_lock *      fl;
549         struct nfs_lowner       lock_owner;
550 };
551 
552 struct nfs_lockt_res {
553         struct nfs4_sequence_res        seq_res;
554         struct file_lock *      denied; /* LOCK, LOCKT failed */
555 };
556 
557 struct nfs_release_lockowner_args {
558         struct nfs4_sequence_args       seq_args;
559         struct nfs_lowner       lock_owner;
560 };
561 
562 struct nfs_release_lockowner_res {
563         struct nfs4_sequence_res        seq_res;
564 };
565 
566 struct nfs4_delegreturnargs {
567         struct nfs4_sequence_args       seq_args;
568         const struct nfs_fh *fhandle;
569         const nfs4_stateid *stateid;
570         const u32 * bitmask;
571         struct nfs4_layoutreturn_args *lr_args;
572 };
573 
574 struct nfs4_delegreturnres {
575         struct nfs4_sequence_res        seq_res;
576         struct nfs_fattr * fattr;
577         struct nfs_server *server;
578         struct nfs4_layoutreturn_res *lr_res;
579         int lr_ret;
580 };
581 
582 /*
583  * Arguments to the write call.
584  */
585 struct nfs_write_verifier {
586         char                    data[8];
587 };
588 
589 struct nfs_writeverf {
590         struct nfs_write_verifier verifier;
591         enum nfs3_stable_how    committed;
592 };
593 
594 /*
595  * Arguments shared by the read and write call.
596  */
597 struct nfs_pgio_args {
598         struct nfs4_sequence_args       seq_args;
599         struct nfs_fh *         fh;
600         struct nfs_open_context *context;
601         struct nfs_lock_context *lock_context;
602         nfs4_stateid            stateid;
603         __u64                   offset;
604         __u32                   count;
605         unsigned int            pgbase;
606         struct page **          pages;
607         const u32 *             bitmask;        /* used by write */
608         enum nfs3_stable_how    stable;         /* used by write */
609 };
610 
611 struct nfs_pgio_res {
612         struct nfs4_sequence_res        seq_res;
613         struct nfs_fattr *      fattr;
614         __u32                   count;
615         __u32                   op_status;
616         int                     eof;            /* used by read */
617         struct nfs_writeverf *  verf;           /* used by write */
618         const struct nfs_server *server;        /* used by write */
619 
620 };
621 
622 /*
623  * Arguments to the commit call.
624  */
625 struct nfs_commitargs {
626         struct nfs4_sequence_args       seq_args;
627         struct nfs_fh           *fh;
628         __u64                   offset;
629         __u32                   count;
630         const u32               *bitmask;
631 };
632 
633 struct nfs_commitres {
634         struct nfs4_sequence_res        seq_res;
635         __u32                   op_status;
636         struct nfs_fattr        *fattr;
637         struct nfs_writeverf    *verf;
638         const struct nfs_server *server;
639 };
640 
641 /*
642  * Common arguments to the unlink call
643  */
644 struct nfs_removeargs {
645         struct nfs4_sequence_args       seq_args;
646         const struct nfs_fh     *fh;
647         struct qstr             name;
648 };
649 
650 struct nfs_removeres {
651         struct nfs4_sequence_res        seq_res;
652         struct nfs_server *server;
653         struct nfs_fattr        *dir_attr;
654         struct nfs4_change_info cinfo;
655 };
656 
657 /*
658  * Common arguments to the rename call
659  */
660 struct nfs_renameargs {
661         struct nfs4_sequence_args       seq_args;
662         const struct nfs_fh             *old_dir;
663         const struct nfs_fh             *new_dir;
664         const struct qstr               *old_name;
665         const struct qstr               *new_name;
666 };
667 
668 struct nfs_renameres {
669         struct nfs4_sequence_res        seq_res;
670         struct nfs_server               *server;
671         struct nfs4_change_info         old_cinfo;
672         struct nfs_fattr                *old_fattr;
673         struct nfs4_change_info         new_cinfo;
674         struct nfs_fattr                *new_fattr;
675 };
676 
677 /* parsed sec= options */
678 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
679 struct nfs_auth_info {
680         unsigned int            flavor_len;
681         rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
682 };
683 
684 /*
685  * Argument struct for decode_entry function
686  */
687 struct nfs_entry {
688         __u64                   ino;
689         __u64                   cookie,
690                                 prev_cookie;
691         const char *            name;
692         unsigned int            len;
693         int                     eof;
694         struct nfs_fh *         fh;
695         struct nfs_fattr *      fattr;
696         struct nfs4_label  *label;
697         unsigned char           d_type;
698         struct nfs_server *     server;
699 };
700 
701 /*
702  * The following types are for NFSv2 only.
703  */
704 struct nfs_sattrargs {
705         struct nfs_fh *         fh;
706         struct iattr *          sattr;
707 };
708 
709 struct nfs_diropargs {
710         struct nfs_fh *         fh;
711         const char *            name;
712         unsigned int            len;
713 };
714 
715 struct nfs_createargs {
716         struct nfs_fh *         fh;
717         const char *            name;
718         unsigned int            len;
719         struct iattr *          sattr;
720 };
721 
722 struct nfs_setattrargs {
723         struct nfs4_sequence_args       seq_args;
724         struct nfs_fh *                 fh;
725         nfs4_stateid                    stateid;
726         struct iattr *                  iap;
727         const struct nfs_server *       server; /* Needed for name mapping */
728         const u32 *                     bitmask;
729         const struct nfs4_label         *label;
730 };
731 
732 struct nfs_setaclargs {
733         struct nfs4_sequence_args       seq_args;
734         struct nfs_fh *                 fh;
735         size_t                          acl_len;
736         struct page **                  acl_pages;
737 };
738 
739 struct nfs_setaclres {
740         struct nfs4_sequence_res        seq_res;
741 };
742 
743 struct nfs_getaclargs {
744         struct nfs4_sequence_args       seq_args;
745         struct nfs_fh *                 fh;
746         size_t                          acl_len;
747         struct page **                  acl_pages;
748 };
749 
750 /* getxattr ACL interface flags */
751 #define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
752 struct nfs_getaclres {
753         struct nfs4_sequence_res        seq_res;
754         size_t                          acl_len;
755         size_t                          acl_data_offset;
756         int                             acl_flags;
757         struct page *                   acl_scratch;
758 };
759 
760 struct nfs_setattrres {
761         struct nfs4_sequence_res        seq_res;
762         struct nfs_fattr *              fattr;
763         struct nfs4_label               *label;
764         const struct nfs_server *       server;
765 };
766 
767 struct nfs_linkargs {
768         struct nfs_fh *         fromfh;
769         struct nfs_fh *         tofh;
770         const char *            toname;
771         unsigned int            tolen;
772 };
773 
774 struct nfs_symlinkargs {
775         struct nfs_fh *         fromfh;
776         const char *            fromname;
777         unsigned int            fromlen;
778         struct page **          pages;
779         unsigned int            pathlen;
780         struct iattr *          sattr;
781 };
782 
783 struct nfs_readdirargs {
784         struct nfs_fh *         fh;
785         __u32                   cookie;
786         unsigned int            count;
787         struct page **          pages;
788 };
789 
790 struct nfs3_getaclargs {
791         struct nfs_fh *         fh;
792         int                     mask;
793         struct page **          pages;
794 };
795 
796 struct nfs3_setaclargs {
797         struct inode *          inode;
798         int                     mask;
799         struct posix_acl *      acl_access;
800         struct posix_acl *      acl_default;
801         size_t                  len;
802         unsigned int            npages;
803         struct page **          pages;
804 };
805 
806 struct nfs_diropok {
807         struct nfs_fh *         fh;
808         struct nfs_fattr *      fattr;
809 };
810 
811 struct nfs_readlinkargs {
812         struct nfs_fh *         fh;
813         unsigned int            pgbase;
814         unsigned int            pglen;
815         struct page **          pages;
816 };
817 
818 struct nfs3_sattrargs {
819         struct nfs_fh *         fh;
820         struct iattr *          sattr;
821         unsigned int            guard;
822         struct timespec         guardtime;
823 };
824 
825 struct nfs3_diropargs {
826         struct nfs_fh *         fh;
827         const char *            name;
828         unsigned int            len;
829 };
830 
831 struct nfs3_accessargs {
832         struct nfs_fh *         fh;
833         __u32                   access;
834 };
835 
836 struct nfs3_createargs {
837         struct nfs_fh *         fh;
838         const char *            name;
839         unsigned int            len;
840         struct iattr *          sattr;
841         enum nfs3_createmode    createmode;
842         __be32                  verifier[2];
843 };
844 
845 struct nfs3_mkdirargs {
846         struct nfs_fh *         fh;
847         const char *            name;
848         unsigned int            len;
849         struct iattr *          sattr;
850 };
851 
852 struct nfs3_symlinkargs {
853         struct nfs_fh *         fromfh;
854         const char *            fromname;
855         unsigned int            fromlen;
856         struct page **          pages;
857         unsigned int            pathlen;
858         struct iattr *          sattr;
859 };
860 
861 struct nfs3_mknodargs {
862         struct nfs_fh *         fh;
863         const char *            name;
864         unsigned int            len;
865         enum nfs3_ftype         type;
866         struct iattr *          sattr;
867         dev_t                   rdev;
868 };
869 
870 struct nfs3_linkargs {
871         struct nfs_fh *         fromfh;
872         struct nfs_fh *         tofh;
873         const char *            toname;
874         unsigned int            tolen;
875 };
876 
877 struct nfs3_readdirargs {
878         struct nfs_fh *         fh;
879         __u64                   cookie;
880         __be32                  verf[2];
881         bool                    plus;
882         unsigned int            count;
883         struct page **          pages;
884 };
885 
886 struct nfs3_diropres {
887         struct nfs_fattr *      dir_attr;
888         struct nfs_fh *         fh;
889         struct nfs_fattr *      fattr;
890 };
891 
892 struct nfs3_accessres {
893         struct nfs_fattr *      fattr;
894         __u32                   access;
895 };
896 
897 struct nfs3_readlinkargs {
898         struct nfs_fh *         fh;
899         unsigned int            pgbase;
900         unsigned int            pglen;
901         struct page **          pages;
902 };
903 
904 struct nfs3_linkres {
905         struct nfs_fattr *      dir_attr;
906         struct nfs_fattr *      fattr;
907 };
908 
909 struct nfs3_readdirres {
910         struct nfs_fattr *      dir_attr;
911         __be32 *                verf;
912         bool                    plus;
913 };
914 
915 struct nfs3_getaclres {
916         struct nfs_fattr *      fattr;
917         int                     mask;
918         unsigned int            acl_access_count;
919         unsigned int            acl_default_count;
920         struct posix_acl *      acl_access;
921         struct posix_acl *      acl_default;
922 };
923 
924 #if IS_ENABLED(CONFIG_NFS_V4)
925 
926 typedef u64 clientid4;
927 
928 struct nfs4_accessargs {
929         struct nfs4_sequence_args       seq_args;
930         const struct nfs_fh *           fh;
931         const u32 *                     bitmask;
932         u32                             access;
933 };
934 
935 struct nfs4_accessres {
936         struct nfs4_sequence_res        seq_res;
937         const struct nfs_server *       server;
938         struct nfs_fattr *              fattr;
939         u32                             supported;
940         u32                             access;
941 };
942 
943 struct nfs4_create_arg {
944         struct nfs4_sequence_args       seq_args;
945         u32                             ftype;
946         union {
947                 struct {
948                         struct page **  pages;
949                         unsigned int    len;
950                 } symlink;   /* NF4LNK */
951                 struct {
952                         u32             specdata1;
953                         u32             specdata2;
954                 } device;    /* NF4BLK, NF4CHR */
955         } u;
956         const struct qstr *             name;
957         const struct nfs_server *       server;
958         const struct iattr *            attrs;
959         const struct nfs_fh *           dir_fh;
960         const u32 *                     bitmask;
961         const struct nfs4_label         *label;
962         umode_t                         umask;
963 };
964 
965 struct nfs4_create_res {
966         struct nfs4_sequence_res        seq_res;
967         const struct nfs_server *       server;
968         struct nfs_fh *                 fh;
969         struct nfs_fattr *              fattr;
970         struct nfs4_label               *label;
971         struct nfs4_change_info         dir_cinfo;
972 };
973 
974 struct nfs4_fsinfo_arg {
975         struct nfs4_sequence_args       seq_args;
976         const struct nfs_fh *           fh;
977         const u32 *                     bitmask;
978 };
979 
980 struct nfs4_fsinfo_res {
981         struct nfs4_sequence_res        seq_res;
982         struct nfs_fsinfo              *fsinfo;
983 };
984 
985 struct nfs4_getattr_arg {
986         struct nfs4_sequence_args       seq_args;
987         const struct nfs_fh *           fh;
988         const u32 *                     bitmask;
989 };
990 
991 struct nfs4_getattr_res {
992         struct nfs4_sequence_res        seq_res;
993         const struct nfs_server *       server;
994         struct nfs_fattr *              fattr;
995         struct nfs4_label               *label;
996 };
997 
998 struct nfs4_link_arg {
999         struct nfs4_sequence_args       seq_args;
1000         const struct nfs_fh *           fh;
1001         const struct nfs_fh *           dir_fh;
1002         const struct qstr *             name;
1003         const u32 *                     bitmask;
1004 };
1005 
1006 struct nfs4_link_res {
1007         struct nfs4_sequence_res        seq_res;
1008         const struct nfs_server *       server;
1009         struct nfs_fattr *              fattr;
1010         struct nfs4_label               *label;
1011         struct nfs4_change_info         cinfo;
1012         struct nfs_fattr *              dir_attr;
1013 };
1014 
1015 struct nfs4_lookup_arg {
1016         struct nfs4_sequence_args       seq_args;
1017         const struct nfs_fh *           dir_fh;
1018         const struct qstr *             name;
1019         const u32 *                     bitmask;
1020 };
1021 
1022 struct nfs4_lookup_res {
1023         struct nfs4_sequence_res        seq_res;
1024         const struct nfs_server *       server;
1025         struct nfs_fattr *              fattr;
1026         struct nfs_fh *                 fh;
1027         struct nfs4_label               *label;
1028 };
1029 
1030 struct nfs4_lookupp_arg {
1031         struct nfs4_sequence_args       seq_args;
1032         const struct nfs_fh             *fh;
1033         const u32                       *bitmask;
1034 };
1035 
1036 struct nfs4_lookupp_res {
1037         struct nfs4_sequence_res        seq_res;
1038         const struct nfs_server         *server;
1039         struct nfs_fattr                *fattr;
1040         struct nfs_fh                   *fh;
1041         struct nfs4_label               *label;
1042 };
1043 
1044 struct nfs4_lookup_root_arg {
1045         struct nfs4_sequence_args       seq_args;
1046         const u32 *                     bitmask;
1047 };
1048 
1049 struct nfs4_pathconf_arg {
1050         struct nfs4_sequence_args       seq_args;
1051         const struct nfs_fh *           fh;
1052         const u32 *                     bitmask;
1053 };
1054 
1055 struct nfs4_pathconf_res {
1056         struct nfs4_sequence_res        seq_res;
1057         struct nfs_pathconf            *pathconf;
1058 };
1059 
1060 struct nfs4_readdir_arg {
1061         struct nfs4_sequence_args       seq_args;
1062         const struct nfs_fh *           fh;
1063         u64                             cookie;
1064         nfs4_verifier                   verifier;
1065         u32                             count;
1066         struct page **                  pages;  /* zero-copy data */
1067         unsigned int                    pgbase; /* zero-copy data */
1068         const u32 *                     bitmask;
1069         bool                            plus;
1070 };
1071 
1072 struct nfs4_readdir_res {
1073         struct nfs4_sequence_res        seq_res;
1074         nfs4_verifier                   verifier;
1075         unsigned int                    pgbase;
1076 };
1077 
1078 struct nfs4_readlink {
1079         struct nfs4_sequence_args       seq_args;
1080         const struct nfs_fh *           fh;
1081         unsigned int                    pgbase;
1082         unsigned int                    pglen;   /* zero-copy data */
1083         struct page **                  pages;   /* zero-copy data */
1084 };
1085 
1086 struct nfs4_readlink_res {
1087         struct nfs4_sequence_res        seq_res;
1088 };
1089 
1090 struct nfs4_setclientid {
1091         const nfs4_verifier *           sc_verifier;
1092         u32                             sc_prog;
1093         unsigned int                    sc_netid_len;
1094         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
1095         unsigned int                    sc_uaddr_len;
1096         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1097         struct nfs_client               *sc_clnt;
1098         struct rpc_cred                 *sc_cred;
1099 };
1100 
1101 struct nfs4_setclientid_res {
1102         u64                             clientid;
1103         nfs4_verifier                   confirm;
1104 };
1105 
1106 struct nfs4_statfs_arg {
1107         struct nfs4_sequence_args       seq_args;
1108         const struct nfs_fh *           fh;
1109         const u32 *                     bitmask;
1110 };
1111 
1112 struct nfs4_statfs_res {
1113         struct nfs4_sequence_res        seq_res;
1114         struct nfs_fsstat              *fsstat;
1115 };
1116 
1117 struct nfs4_server_caps_arg {
1118         struct nfs4_sequence_args       seq_args;
1119         struct nfs_fh                  *fhandle;
1120         const u32 *                     bitmask;
1121 };
1122 
1123 struct nfs4_server_caps_res {
1124         struct nfs4_sequence_res        seq_res;
1125         u32                             attr_bitmask[3];
1126         u32                             exclcreat_bitmask[3];
1127         u32                             acl_bitmask;
1128         u32                             has_links;
1129         u32                             has_symlinks;
1130         u32                             fh_expire_type;
1131 };
1132 
1133 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1134 struct nfs4_pathname {
1135         unsigned int ncomponents;
1136         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1137 };
1138 
1139 #define NFS4_FS_LOCATION_MAXSERVERS 10
1140 struct nfs4_fs_location {
1141         unsigned int nservers;
1142         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1143         struct nfs4_pathname rootpath;
1144 };
1145 
1146 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1147 struct nfs4_fs_locations {
1148         struct nfs_fattr fattr;
1149         const struct nfs_server *server;
1150         struct nfs4_pathname fs_path;
1151         int nlocations;
1152         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1153 };
1154 
1155 struct nfs4_fs_locations_arg {
1156         struct nfs4_sequence_args       seq_args;
1157         const struct nfs_fh *dir_fh;
1158         const struct nfs_fh *fh;
1159         const struct qstr *name;
1160         struct page *page;
1161         const u32 *bitmask;
1162         clientid4 clientid;
1163         unsigned char migration:1, renew:1;
1164 };
1165 
1166 struct nfs4_fs_locations_res {
1167         struct nfs4_sequence_res        seq_res;
1168         struct nfs4_fs_locations       *fs_locations;
1169         unsigned char                   migration:1, renew:1;
1170 };
1171 
1172 struct nfs4_secinfo4 {
1173         u32                     flavor;
1174         struct rpcsec_gss_info  flavor_info;
1175 };
1176 
1177 struct nfs4_secinfo_flavors {
1178         unsigned int            num_flavors;
1179         struct nfs4_secinfo4    flavors[0];
1180 };
1181 
1182 struct nfs4_secinfo_arg {
1183         struct nfs4_sequence_args       seq_args;
1184         const struct nfs_fh             *dir_fh;
1185         const struct qstr               *name;
1186 };
1187 
1188 struct nfs4_secinfo_res {
1189         struct nfs4_sequence_res        seq_res;
1190         struct nfs4_secinfo_flavors     *flavors;
1191 };
1192 
1193 struct nfs4_fsid_present_arg {
1194         struct nfs4_sequence_args       seq_args;
1195         const struct nfs_fh             *fh;
1196         clientid4                       clientid;
1197         unsigned char                   renew:1;
1198 };
1199 
1200 struct nfs4_fsid_present_res {
1201         struct nfs4_sequence_res        seq_res;
1202         struct nfs_fh                   *fh;
1203         unsigned char                   renew:1;
1204 };
1205 
1206 #endif /* CONFIG_NFS_V4 */
1207 
1208 struct nfstime4 {
1209         u64     seconds;
1210         u32     nseconds;
1211 };
1212 
1213 #ifdef CONFIG_NFS_V4_1
1214 
1215 struct pnfs_commit_bucket {
1216         struct list_head written;
1217         struct list_head committing;
1218         struct pnfs_layout_segment *wlseg;
1219         struct pnfs_layout_segment *clseg;
1220         struct nfs_writeverf direct_verf;
1221 };
1222 
1223 struct pnfs_ds_commit_info {
1224         int nwritten;
1225         int ncommitting;
1226         int nbuckets;
1227         struct pnfs_commit_bucket *buckets;
1228 };
1229 
1230 struct nfs41_state_protection {
1231         u32 how;
1232         struct nfs4_op_map enforce;
1233         struct nfs4_op_map allow;
1234 };
1235 
1236 struct nfs41_exchange_id_args {
1237         struct nfs_client               *client;
1238         nfs4_verifier                   verifier;
1239         u32                             flags;
1240         struct nfs41_state_protection   state_protect;
1241 };
1242 
1243 struct nfs41_server_owner {
1244         uint64_t                        minor_id;
1245         uint32_t                        major_id_sz;
1246         char                            major_id[NFS4_OPAQUE_LIMIT];
1247 };
1248 
1249 struct nfs41_server_scope {
1250         uint32_t                        server_scope_sz;
1251         char                            server_scope[NFS4_OPAQUE_LIMIT];
1252 };
1253 
1254 struct nfs41_impl_id {
1255         char                            domain[NFS4_OPAQUE_LIMIT + 1];
1256         char                            name[NFS4_OPAQUE_LIMIT + 1];
1257         struct nfstime4                 date;
1258 };
1259 
1260 struct nfs41_bind_conn_to_session_args {
1261         struct nfs_client               *client;
1262         struct nfs4_sessionid           sessionid;
1263         u32                             dir;
1264         bool                            use_conn_in_rdma_mode;
1265 };
1266 
1267 struct nfs41_bind_conn_to_session_res {
1268         struct nfs4_sessionid           sessionid;
1269         u32                             dir;
1270         bool                            use_conn_in_rdma_mode;
1271 };
1272 
1273 struct nfs41_exchange_id_res {
1274         u64                             clientid;
1275         u32                             seqid;
1276         u32                             flags;
1277         struct nfs41_server_owner       *server_owner;
1278         struct nfs41_server_scope       *server_scope;
1279         struct nfs41_impl_id            *impl_id;
1280         struct nfs41_state_protection   state_protect;
1281 };
1282 
1283 struct nfs41_create_session_args {
1284         struct nfs_client              *client;
1285         u64                             clientid;
1286         uint32_t                        seqid;
1287         uint32_t                        flags;
1288         uint32_t                        cb_program;
1289         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1290         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1291 };
1292 
1293 struct nfs41_create_session_res {
1294         struct nfs4_sessionid           sessionid;
1295         uint32_t                        seqid;
1296         uint32_t                        flags;
1297         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1298         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1299 };
1300 
1301 struct nfs41_reclaim_complete_args {
1302         struct nfs4_sequence_args       seq_args;
1303         /* In the future extend to include curr_fh for use with migration */
1304         unsigned char                   one_fs:1;
1305 };
1306 
1307 struct nfs41_reclaim_complete_res {
1308         struct nfs4_sequence_res        seq_res;
1309 };
1310 
1311 #define SECINFO_STYLE_CURRENT_FH 0
1312 #define SECINFO_STYLE_PARENT 1
1313 struct nfs41_secinfo_no_name_args {
1314         struct nfs4_sequence_args       seq_args;
1315         int                             style;
1316 };
1317 
1318 struct nfs41_test_stateid_args {
1319         struct nfs4_sequence_args       seq_args;
1320         nfs4_stateid                    *stateid;
1321 };
1322 
1323 struct nfs41_test_stateid_res {
1324         struct nfs4_sequence_res        seq_res;
1325         unsigned int                    status;
1326 };
1327 
1328 struct nfs41_free_stateid_args {
1329         struct nfs4_sequence_args       seq_args;
1330         nfs4_stateid                    stateid;
1331 };
1332 
1333 struct nfs41_free_stateid_res {
1334         struct nfs4_sequence_res        seq_res;
1335         unsigned int                    status;
1336 };
1337 
1338 static inline void
1339 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1340 {
1341         kfree(cinfo->buckets);
1342 }
1343 
1344 #else
1345 
1346 struct pnfs_ds_commit_info {
1347 };
1348 
1349 static inline void
1350 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1351 {
1352 }
1353 
1354 #endif /* CONFIG_NFS_V4_1 */
1355 
1356 #ifdef CONFIG_NFS_V4_2
1357 struct nfs42_falloc_args {
1358         struct nfs4_sequence_args       seq_args;
1359 
1360         struct nfs_fh                   *falloc_fh;
1361         nfs4_stateid                     falloc_stateid;
1362         u64                              falloc_offset;
1363         u64                              falloc_length;
1364         const u32                       *falloc_bitmask;
1365 };
1366 
1367 struct nfs42_falloc_res {
1368         struct nfs4_sequence_res        seq_res;
1369         unsigned int                    status;
1370 
1371         struct nfs_fattr                *falloc_fattr;
1372         const struct nfs_server         *falloc_server;
1373 };
1374 
1375 struct nfs42_copy_args {
1376         struct nfs4_sequence_args       seq_args;
1377 
1378         struct nfs_fh                   *src_fh;
1379         nfs4_stateid                    src_stateid;
1380         u64                             src_pos;
1381 
1382         struct nfs_fh                   *dst_fh;
1383         nfs4_stateid                    dst_stateid;
1384         u64                             dst_pos;
1385 
1386         u64                             count;
1387 };
1388 
1389 struct nfs42_write_res {
1390         u64                     count;
1391         struct nfs_writeverf    verifier;
1392 };
1393 
1394 struct nfs42_copy_res {
1395         struct nfs4_sequence_res        seq_res;
1396         struct nfs42_write_res          write_res;
1397         bool                            consecutive;
1398         bool                            synchronous;
1399         struct nfs_commitres            commit_res;
1400 };
1401 
1402 struct nfs42_seek_args {
1403         struct nfs4_sequence_args       seq_args;
1404 
1405         struct nfs_fh                   *sa_fh;
1406         nfs4_stateid                    sa_stateid;
1407         u64                             sa_offset;
1408         u32                             sa_what;
1409 };
1410 
1411 struct nfs42_seek_res {
1412         struct nfs4_sequence_res        seq_res;
1413         unsigned int                    status;
1414 
1415         u32     sr_eof;
1416         u64     sr_offset;
1417 };
1418 #endif
1419 
1420 struct nfs_page;
1421 
1422 #define NFS_PAGEVEC_SIZE        (8U)
1423 
1424 struct nfs_page_array {
1425         struct page             **pagevec;
1426         unsigned int            npages;         /* Max length of pagevec */
1427         struct page             *page_array[NFS_PAGEVEC_SIZE];
1428 };
1429 
1430 /* used as flag bits in nfs_pgio_header */
1431 enum {
1432         NFS_IOHDR_ERROR = 0,
1433         NFS_IOHDR_EOF,
1434         NFS_IOHDR_REDO,
1435         NFS_IOHDR_STAT,
1436 };
1437 
1438 struct nfs_io_completion;
1439 struct nfs_pgio_header {
1440         struct inode            *inode;
1441         struct rpc_cred         *cred;
1442         struct list_head        pages;
1443         struct nfs_page         *req;
1444         struct nfs_writeverf    verf;           /* Used for writes */
1445         fmode_t                 rw_mode;
1446         struct pnfs_layout_segment *lseg;
1447         loff_t                  io_start;
1448         const struct rpc_call_ops *mds_ops;
1449         void (*release) (struct nfs_pgio_header *hdr);
1450         const struct nfs_pgio_completion_ops *completion_ops;
1451         const struct nfs_rw_ops *rw_ops;
1452         struct nfs_io_completion *io_completion;
1453         struct nfs_direct_req   *dreq;
1454         spinlock_t              lock;
1455         /* fields protected by lock */
1456         int                     pnfs_error;
1457         int                     error;          /* merge with pnfs_error */
1458         unsigned long           good_bytes;     /* boundary of good data */
1459         unsigned long           flags;
1460 
1461         /*
1462          * rpc data
1463          */
1464         struct rpc_task         task;
1465         struct nfs_fattr        fattr;
1466         struct nfs_pgio_args    args;           /* argument struct */
1467         struct nfs_pgio_res     res;            /* result struct */
1468         unsigned long           timestamp;      /* For lease renewal */
1469         int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1470         __u64                   mds_offset;     /* Filelayout dense stripe */
1471         struct nfs_page_array   page_array;
1472         struct nfs_client       *ds_clp;        /* pNFS data server */
1473         int                     ds_commit_idx;  /* ds index if ds_clp is set */
1474         int                     pgio_mirror_idx;/* mirror index in pgio layer */
1475 };
1476 
1477 struct nfs_mds_commit_info {
1478         atomic_t rpcs_out;
1479         unsigned long           ncommit;
1480         struct list_head        list;
1481 };
1482 
1483 struct nfs_commit_info;
1484 struct nfs_commit_data;
1485 struct nfs_inode;
1486 struct nfs_commit_completion_ops {
1487         void (*completion) (struct nfs_commit_data *data);
1488         void (*resched_write) (struct nfs_commit_info *, struct nfs_page *);
1489 };
1490 
1491 struct nfs_commit_info {
1492         struct inode                    *inode; /* Needed for inode->i_lock */
1493         struct nfs_mds_commit_info      *mds;
1494         struct pnfs_ds_commit_info      *ds;
1495         struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1496         const struct nfs_commit_completion_ops *completion_ops;
1497 };
1498 
1499 struct nfs_commit_data {
1500         struct rpc_task         task;
1501         struct inode            *inode;
1502         struct rpc_cred         *cred;
1503         struct nfs_fattr        fattr;
1504         struct nfs_writeverf    verf;
1505         struct list_head        pages;          /* Coalesced requests we wish to flush */
1506         struct list_head        list;           /* lists of struct nfs_write_data */
1507         struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1508         struct nfs_commitargs   args;           /* argument struct */
1509         struct nfs_commitres    res;            /* result struct */
1510         struct nfs_open_context *context;
1511         struct pnfs_layout_segment *lseg;
1512         struct nfs_client       *ds_clp;        /* pNFS data server */
1513         int                     ds_commit_index;
1514         loff_t                  lwb;
1515         const struct rpc_call_ops *mds_ops;
1516         const struct nfs_commit_completion_ops *completion_ops;
1517         int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1518         unsigned long           flags;
1519 };
1520 
1521 struct nfs_pgio_completion_ops {
1522         void    (*error_cleanup)(struct list_head *head);
1523         void    (*init_hdr)(struct nfs_pgio_header *hdr);
1524         void    (*completion)(struct nfs_pgio_header *hdr);
1525         void    (*reschedule_io)(struct nfs_pgio_header *hdr);
1526 };
1527 
1528 struct nfs_unlinkdata {
1529         struct nfs_removeargs args;
1530         struct nfs_removeres res;
1531         struct dentry *dentry;
1532         wait_queue_head_t wq;
1533         struct rpc_cred *cred;
1534         struct nfs_fattr dir_attr;
1535         long timeout;
1536 };
1537 
1538 struct nfs_renamedata {
1539         struct nfs_renameargs   args;
1540         struct nfs_renameres    res;
1541         struct rpc_cred         *cred;
1542         struct inode            *old_dir;
1543         struct dentry           *old_dentry;
1544         struct nfs_fattr        old_fattr;
1545         struct inode            *new_dir;
1546         struct dentry           *new_dentry;
1547         struct nfs_fattr        new_fattr;
1548         void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1549         long timeout;
1550         bool cancelled;
1551 };
1552 
1553 struct nfs_access_entry;
1554 struct nfs_client;
1555 struct rpc_timeout;
1556 struct nfs_subversion;
1557 struct nfs_mount_info;
1558 struct nfs_client_initdata;
1559 struct nfs_pageio_descriptor;
1560 
1561 /*
1562  * RPC procedure vector for NFSv2/NFSv3 demuxing
1563  */
1564 struct nfs_rpc_ops {
1565         u32     version;                /* Protocol version */
1566         const struct dentry_operations *dentry_ops;
1567         const struct inode_operations *dir_inode_ops;
1568         const struct inode_operations *file_inode_ops;
1569         const struct file_operations *file_ops;
1570         const struct nlmclnt_operations *nlmclnt_ops;
1571 
1572         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1573                             struct nfs_fsinfo *);
1574         struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1575                                       struct nfs_fh *, struct nfs_fattr *);
1576         struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1577                                      struct nfs_subversion *);
1578         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1579                             struct nfs_fattr *, struct nfs4_label *);
1580         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1581                             struct iattr *);
1582         int     (*lookup)  (struct inode *, const struct qstr *,
1583                             struct nfs_fh *, struct nfs_fattr *,
1584                             struct nfs4_label *);
1585         int     (*lookupp) (struct inode *, struct nfs_fh *,
1586                             struct nfs_fattr *, struct nfs4_label *);
1587         int     (*access)  (struct inode *, struct nfs_access_entry *);
1588         int     (*readlink)(struct inode *, struct page *, unsigned int,
1589                             unsigned int);
1590         int     (*create)  (struct inode *, struct dentry *,
1591                             struct iattr *, int);
1592         int     (*remove)  (struct inode *, const struct qstr *);
1593         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1594         void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1595         int     (*unlink_done) (struct rpc_task *, struct inode *);
1596         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1597         void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1598         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1599         int     (*link)    (struct inode *, struct inode *, const struct qstr *);
1600         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1601                             unsigned int, struct iattr *);
1602         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1603         int     (*rmdir)   (struct inode *, const struct qstr *);
1604         int     (*readdir) (struct dentry *, struct rpc_cred *,
1605                             u64, struct page **, unsigned int, bool);
1606         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1607                             dev_t);
1608         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1609                             struct nfs_fsstat *);
1610         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1611                             struct nfs_fsinfo *);
1612         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1613                              struct nfs_pathconf *);
1614         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1615         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool);
1616         int     (*pgio_rpc_prepare)(struct rpc_task *,
1617                                     struct nfs_pgio_header *);
1618         void    (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1619         int     (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1620         void    (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1621         int     (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1622         void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1623         void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1624         int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1625         int     (*lock)(struct file *, int, struct file_lock *);
1626         int     (*lock_check_bounds)(const struct file_lock *);
1627         void    (*clear_acl_cache)(struct inode *);
1628         void    (*close_context)(struct nfs_open_context *ctx, int);
1629         struct inode * (*open_context) (struct inode *dir,
1630                                 struct nfs_open_context *ctx,
1631                                 int open_flags,
1632                                 struct iattr *iattr,
1633                                 int *);
1634         int (*have_delegation)(struct inode *, fmode_t);
1635         int (*return_delegation)(struct inode *);
1636         struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1637         struct nfs_client *(*init_client) (struct nfs_client *,
1638                                 const struct nfs_client_initdata *);
1639         void    (*free_client) (struct nfs_client *);
1640         struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1641         struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1642                                            struct nfs_fattr *, rpc_authflavor_t);
1643 };
1644 
1645 /*
1646  *      NFS_CALL(getattr, inode, (fattr));
1647  * into
1648  *      NFS_PROTO(inode)->getattr(fattr);
1649  */
1650 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1651 
1652 /*
1653  * Function vectors etc. for the NFS client
1654  */
1655 extern const struct nfs_rpc_ops nfs_v2_clientops;
1656 extern const struct nfs_rpc_ops nfs_v3_clientops;
1657 extern const struct nfs_rpc_ops nfs_v4_clientops;
1658 extern const struct rpc_version nfs_version2;
1659 extern const struct rpc_version nfs_version3;
1660 extern const struct rpc_version nfs_version4;
1661 
1662 extern const struct rpc_version nfsacl_version3;
1663 extern const struct rpc_program nfsacl_program;
1664 
1665 #endif
1666 

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