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