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[mirror_ubuntu-bionic-kernel.git] / include / linux / nfs_xdr.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_NFS_XDR_H
3 #define _LINUX_NFS_XDR_H
4
5 #include <linux/nfsacl.h>
6 #include <linux/sunrpc/gss_api.h>
7
8 /*
9 * To change the maximum rsize and wsize supported by the NFS client, adjust
10 * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can
11 * support a megabyte or more. The default is left at 4096 bytes, which is
12 * reasonable for NFS over UDP.
13 */
14 #define NFS_MAX_FILE_IO_SIZE (1048576U)
15 #define NFS_DEF_FILE_IO_SIZE (4096U)
16 #define NFS_MIN_FILE_IO_SIZE (1024U)
17
18 struct nfs4_string {
19 unsigned int len;
20 char *data;
21 };
22
23 struct nfs_fsid {
24 uint64_t major;
25 uint64_t minor;
26 };
27
28 /*
29 * Helper for checking equality between 2 fsids.
30 */
31 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
32 {
33 return a->major == b->major && a->minor == b->minor;
34 }
35
36 struct nfs4_threshold {
37 __u32 bm;
38 __u32 l_type;
39 __u64 rd_sz;
40 __u64 wr_sz;
41 __u64 rd_io_sz;
42 __u64 wr_io_sz;
43 };
44
45 struct nfs_fattr {
46 unsigned int valid; /* which fields are valid */
47 umode_t mode;
48 __u32 nlink;
49 kuid_t uid;
50 kgid_t gid;
51 dev_t rdev;
52 __u64 size;
53 union {
54 struct {
55 __u32 blocksize;
56 __u32 blocks;
57 } nfs2;
58 struct {
59 __u64 used;
60 } nfs3;
61 } du;
62 struct nfs_fsid fsid;
63 __u64 fileid;
64 __u64 mounted_on_fileid;
65 struct timespec atime;
66 struct timespec mtime;
67 struct timespec ctime;
68 __u64 change_attr; /* NFSv4 change attribute */
69 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
70 __u64 pre_size; /* pre_op_attr.size */
71 struct timespec pre_mtime; /* pre_op_attr.mtime */
72 struct timespec pre_ctime; /* pre_op_attr.ctime */
73 unsigned long time_start;
74 unsigned long gencount;
75 struct nfs4_string *owner_name;
76 struct nfs4_string *group_name;
77 struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */
78 };
79
80 #define NFS_ATTR_FATTR_TYPE (1U << 0)
81 #define NFS_ATTR_FATTR_MODE (1U << 1)
82 #define NFS_ATTR_FATTR_NLINK (1U << 2)
83 #define NFS_ATTR_FATTR_OWNER (1U << 3)
84 #define NFS_ATTR_FATTR_GROUP (1U << 4)
85 #define NFS_ATTR_FATTR_RDEV (1U << 5)
86 #define NFS_ATTR_FATTR_SIZE (1U << 6)
87 #define NFS_ATTR_FATTR_PRESIZE (1U << 7)
88 #define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
89 #define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
90 #define NFS_ATTR_FATTR_FSID (1U << 10)
91 #define NFS_ATTR_FATTR_FILEID (1U << 11)
92 #define NFS_ATTR_FATTR_ATIME (1U << 12)
93 #define NFS_ATTR_FATTR_MTIME (1U << 13)
94 #define NFS_ATTR_FATTR_CTIME (1U << 14)
95 #define NFS_ATTR_FATTR_PREMTIME (1U << 15)
96 #define NFS_ATTR_FATTR_PRECTIME (1U << 16)
97 #define NFS_ATTR_FATTR_CHANGE (1U << 17)
98 #define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
99 #define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19)
100 #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20)
101 #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21)
102 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
103 #define NFS_ATTR_FATTR_OWNER_NAME (1U << 23)
104 #define NFS_ATTR_FATTR_GROUP_NAME (1U << 24)
105 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
106
107 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
108 | NFS_ATTR_FATTR_MODE \
109 | NFS_ATTR_FATTR_NLINK \
110 | NFS_ATTR_FATTR_OWNER \
111 | NFS_ATTR_FATTR_GROUP \
112 | NFS_ATTR_FATTR_RDEV \
113 | NFS_ATTR_FATTR_SIZE \
114 | NFS_ATTR_FATTR_FSID \
115 | NFS_ATTR_FATTR_FILEID \
116 | NFS_ATTR_FATTR_ATIME \
117 | NFS_ATTR_FATTR_MTIME \
118 | NFS_ATTR_FATTR_CTIME \
119 | NFS_ATTR_FATTR_CHANGE)
120 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
121 | NFS_ATTR_FATTR_BLOCKS_USED)
122 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
123 | NFS_ATTR_FATTR_SPACE_USED)
124 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
125 | NFS_ATTR_FATTR_SPACE_USED \
126 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
127
128 /*
129 * Maximal number of supported layout drivers.
130 */
131 #define NFS_MAX_LAYOUT_TYPES 8
132
133 /*
134 * Info on the file system
135 */
136 struct nfs_fsinfo {
137 struct nfs_fattr *fattr; /* Post-op attributes */
138 __u32 rtmax; /* max. read transfer size */
139 __u32 rtpref; /* pref. read transfer size */
140 __u32 rtmult; /* reads should be multiple of this */
141 __u32 wtmax; /* max. write transfer size */
142 __u32 wtpref; /* pref. write transfer size */
143 __u32 wtmult; /* writes should be multiple of this */
144 __u32 dtpref; /* pref. readdir transfer size */
145 __u64 maxfilesize;
146 struct timespec time_delta; /* server time granularity */
147 __u32 lease_time; /* in seconds */
148 __u32 nlayouttypes; /* number of layouttypes */
149 __u32 layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */
150 __u32 blksize; /* preferred pnfs io block size */
151 __u32 clone_blksize; /* granularity of a CLONE operation */
152 };
153
154 struct nfs_fsstat {
155 struct nfs_fattr *fattr; /* Post-op attributes */
156 __u64 tbytes; /* total size in bytes */
157 __u64 fbytes; /* # of free bytes */
158 __u64 abytes; /* # of bytes available to user */
159 __u64 tfiles; /* # of files */
160 __u64 ffiles; /* # of free files */
161 __u64 afiles; /* # of files available to user */
162 };
163
164 struct nfs2_fsstat {
165 __u32 tsize; /* Server transfer size */
166 __u32 bsize; /* Filesystem block size */
167 __u32 blocks; /* No. of "bsize" blocks on filesystem */
168 __u32 bfree; /* No. of free "bsize" blocks */
169 __u32 bavail; /* No. of available "bsize" blocks */
170 };
171
172 struct nfs_pathconf {
173 struct nfs_fattr *fattr; /* Post-op attributes */
174 __u32 max_link; /* max # of hard links */
175 __u32 max_namelen; /* max name length */
176 };
177
178 struct nfs4_change_info {
179 u32 atomic;
180 u64 before;
181 u64 after;
182 };
183
184 struct nfs_seqid;
185
186 /* nfs41 sessions channel attributes */
187 struct nfs4_channel_attrs {
188 u32 max_rqst_sz;
189 u32 max_resp_sz;
190 u32 max_resp_sz_cached;
191 u32 max_ops;
192 u32 max_reqs;
193 };
194
195 struct nfs4_slot;
196 struct nfs4_sequence_args {
197 struct nfs4_slot *sa_slot;
198 u8 sa_cache_this : 1,
199 sa_privileged : 1;
200 };
201
202 struct nfs4_sequence_res {
203 struct nfs4_slot *sr_slot; /* slot used to send request */
204 unsigned long sr_timestamp;
205 int sr_status; /* sequence operation status */
206 u32 sr_status_flags;
207 u32 sr_highest_slotid;
208 u32 sr_target_highest_slotid;
209 };
210
211 struct nfs4_get_lease_time_args {
212 struct nfs4_sequence_args la_seq_args;
213 };
214
215 struct nfs4_get_lease_time_res {
216 struct nfs4_sequence_res lr_seq_res;
217 struct nfs_fsinfo *lr_fsinfo;
218 };
219
220 struct xdr_stream;
221 struct nfs4_xdr_opaque_data;
222
223 struct nfs4_xdr_opaque_ops {
224 void (*encode)(struct xdr_stream *, const void *args,
225 const struct nfs4_xdr_opaque_data *);
226 void (*free)(struct nfs4_xdr_opaque_data *);
227 };
228
229 struct nfs4_xdr_opaque_data {
230 const struct nfs4_xdr_opaque_ops *ops;
231 void *data;
232 };
233
234 #define PNFS_LAYOUT_MAXSIZE 4096
235
236 struct nfs4_layoutdriver_data {
237 struct page **pages;
238 __u32 pglen;
239 __u32 len;
240 };
241
242 struct pnfs_layout_range {
243 u32 iomode;
244 u64 offset;
245 u64 length;
246 };
247
248 struct nfs4_layoutget_args {
249 struct nfs4_sequence_args seq_args;
250 __u32 type;
251 struct pnfs_layout_range range;
252 __u64 minlength;
253 __u32 maxcount;
254 struct inode *inode;
255 struct nfs_open_context *ctx;
256 nfs4_stateid stateid;
257 struct nfs4_layoutdriver_data layout;
258 };
259
260 struct nfs4_layoutget_res {
261 struct nfs4_sequence_res seq_res;
262 __u32 return_on_close;
263 struct pnfs_layout_range range;
264 __u32 type;
265 nfs4_stateid stateid;
266 struct nfs4_layoutdriver_data *layoutp;
267 };
268
269 struct nfs4_layoutget {
270 struct nfs4_layoutget_args args;
271 struct nfs4_layoutget_res res;
272 struct rpc_cred *cred;
273 gfp_t gfp_flags;
274 };
275
276 struct nfs4_getdeviceinfo_args {
277 struct nfs4_sequence_args seq_args;
278 struct pnfs_device *pdev;
279 __u32 notify_types;
280 };
281
282 struct nfs4_getdeviceinfo_res {
283 struct nfs4_sequence_res seq_res;
284 struct pnfs_device *pdev;
285 __u32 notification;
286 };
287
288 struct nfs4_layoutcommit_args {
289 struct nfs4_sequence_args seq_args;
290 nfs4_stateid stateid;
291 __u64 lastbytewritten;
292 struct inode *inode;
293 const u32 *bitmask;
294 size_t layoutupdate_len;
295 struct page *layoutupdate_page;
296 struct page **layoutupdate_pages;
297 __be32 *start_p;
298 };
299
300 struct nfs4_layoutcommit_res {
301 struct nfs4_sequence_res seq_res;
302 struct nfs_fattr *fattr;
303 const struct nfs_server *server;
304 int status;
305 };
306
307 struct nfs4_layoutcommit_data {
308 struct rpc_task task;
309 struct nfs_fattr fattr;
310 struct list_head lseg_list;
311 struct rpc_cred *cred;
312 struct inode *inode;
313 struct nfs4_layoutcommit_args args;
314 struct nfs4_layoutcommit_res res;
315 };
316
317 struct nfs4_layoutreturn_args {
318 struct nfs4_sequence_args seq_args;
319 struct pnfs_layout_hdr *layout;
320 struct inode *inode;
321 struct pnfs_layout_range range;
322 nfs4_stateid stateid;
323 __u32 layout_type;
324 struct nfs4_xdr_opaque_data *ld_private;
325 };
326
327 struct nfs4_layoutreturn_res {
328 struct nfs4_sequence_res seq_res;
329 u32 lrs_present;
330 nfs4_stateid stateid;
331 };
332
333 struct nfs4_layoutreturn {
334 struct nfs4_layoutreturn_args args;
335 struct nfs4_layoutreturn_res res;
336 struct rpc_cred *cred;
337 struct nfs_client *clp;
338 struct inode *inode;
339 int rpc_status;
340 struct nfs4_xdr_opaque_data ld_private;
341 };
342
343 #define PNFS_LAYOUTSTATS_MAXSIZE 256
344
345 struct nfs42_layoutstat_args;
346 struct nfs42_layoutstat_devinfo;
347 typedef void (*layoutstats_encode_t)(struct xdr_stream *,
348 struct nfs42_layoutstat_args *,
349 struct nfs42_layoutstat_devinfo *);
350
351 /* Per file per deviceid layoutstats */
352 struct nfs42_layoutstat_devinfo {
353 struct nfs4_deviceid dev_id;
354 __u64 offset;
355 __u64 length;
356 __u64 read_count;
357 __u64 read_bytes;
358 __u64 write_count;
359 __u64 write_bytes;
360 __u32 layout_type;
361 struct nfs4_xdr_opaque_data ld_private;
362 };
363
364 struct nfs42_layoutstat_args {
365 struct nfs4_sequence_args seq_args;
366 struct nfs_fh *fh;
367 struct inode *inode;
368 nfs4_stateid stateid;
369 int num_dev;
370 struct nfs42_layoutstat_devinfo *devinfo;
371 };
372
373 struct nfs42_layoutstat_res {
374 struct nfs4_sequence_res seq_res;
375 int num_dev;
376 int rpc_status;
377 };
378
379 struct nfs42_layoutstat_data {
380 struct inode *inode;
381 struct nfs42_layoutstat_args args;
382 struct nfs42_layoutstat_res res;
383 };
384
385 struct nfs42_clone_args {
386 struct nfs4_sequence_args seq_args;
387 struct nfs_fh *src_fh;
388 struct nfs_fh *dst_fh;
389 nfs4_stateid src_stateid;
390 nfs4_stateid dst_stateid;
391 __u64 src_offset;
392 __u64 dst_offset;
393 __u64 count;
394 const u32 *dst_bitmask;
395 };
396
397 struct nfs42_clone_res {
398 struct nfs4_sequence_res seq_res;
399 unsigned int rpc_status;
400 struct nfs_fattr *dst_fattr;
401 const struct nfs_server *server;
402 };
403
404 struct stateowner_id {
405 __u64 create_time;
406 __u32 uniquifier;
407 };
408
409 /*
410 * Arguments to the open call.
411 */
412 struct nfs_openargs {
413 struct nfs4_sequence_args seq_args;
414 const struct nfs_fh * fh;
415 struct nfs_seqid * seqid;
416 int open_flags;
417 fmode_t fmode;
418 u32 share_access;
419 u32 access;
420 __u64 clientid;
421 struct stateowner_id id;
422 union {
423 struct {
424 struct iattr * attrs; /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
425 nfs4_verifier verifier; /* EXCLUSIVE */
426 };
427 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
428 fmode_t delegation_type; /* CLAIM_PREVIOUS */
429 } u;
430 const struct qstr * name;
431 const struct nfs_server *server; /* Needed for ID mapping */
432 const u32 * bitmask;
433 const u32 * open_bitmap;
434 enum open_claim_type4 claim;
435 enum createmode4 createmode;
436 const struct nfs4_label *label;
437 umode_t umask;
438 };
439
440 struct nfs_openres {
441 struct nfs4_sequence_res seq_res;
442 nfs4_stateid stateid;
443 struct nfs_fh fh;
444 struct nfs4_change_info cinfo;
445 __u32 rflags;
446 struct nfs_fattr * f_attr;
447 struct nfs4_label *f_label;
448 struct nfs_seqid * seqid;
449 const struct nfs_server *server;
450 fmode_t delegation_type;
451 nfs4_stateid delegation;
452 unsigned long pagemod_limit;
453 __u32 do_recall;
454 __u32 attrset[NFS4_BITMAP_SIZE];
455 struct nfs4_string *owner;
456 struct nfs4_string *group_owner;
457 __u32 access_request;
458 __u32 access_supported;
459 __u32 access_result;
460 };
461
462 /*
463 * Arguments to the open_confirm call.
464 */
465 struct nfs_open_confirmargs {
466 struct nfs4_sequence_args seq_args;
467 const struct nfs_fh * fh;
468 nfs4_stateid * stateid;
469 struct nfs_seqid * seqid;
470 };
471
472 struct nfs_open_confirmres {
473 struct nfs4_sequence_res seq_res;
474 nfs4_stateid stateid;
475 struct nfs_seqid * seqid;
476 };
477
478 /*
479 * Arguments to the close call.
480 */
481 struct nfs_closeargs {
482 struct nfs4_sequence_args seq_args;
483 struct nfs_fh * fh;
484 nfs4_stateid stateid;
485 struct nfs_seqid * seqid;
486 fmode_t fmode;
487 u32 share_access;
488 const u32 * bitmask;
489 struct nfs4_layoutreturn_args *lr_args;
490 };
491
492 struct nfs_closeres {
493 struct nfs4_sequence_res seq_res;
494 nfs4_stateid stateid;
495 struct nfs_fattr * fattr;
496 struct nfs_seqid * seqid;
497 const struct nfs_server *server;
498 struct nfs4_layoutreturn_res *lr_res;
499 int lr_ret;
500 };
501 /*
502 * * Arguments to the lock,lockt, and locku call.
503 * */
504 struct nfs_lowner {
505 __u64 clientid;
506 __u64 id;
507 dev_t s_dev;
508 };
509
510 struct nfs_lock_args {
511 struct nfs4_sequence_args seq_args;
512 struct nfs_fh * fh;
513 struct file_lock * fl;
514 struct nfs_seqid * lock_seqid;
515 nfs4_stateid lock_stateid;
516 struct nfs_seqid * open_seqid;
517 nfs4_stateid open_stateid;
518 struct nfs_lowner lock_owner;
519 unsigned char block : 1;
520 unsigned char reclaim : 1;
521 unsigned char new_lock : 1;
522 unsigned char new_lock_owner : 1;
523 };
524
525 struct nfs_lock_res {
526 struct nfs4_sequence_res seq_res;
527 nfs4_stateid stateid;
528 struct nfs_seqid * lock_seqid;
529 struct nfs_seqid * open_seqid;
530 };
531
532 struct nfs_locku_args {
533 struct nfs4_sequence_args seq_args;
534 struct nfs_fh * fh;
535 struct file_lock * fl;
536 struct nfs_seqid * seqid;
537 nfs4_stateid stateid;
538 };
539
540 struct nfs_locku_res {
541 struct nfs4_sequence_res seq_res;
542 nfs4_stateid stateid;
543 struct nfs_seqid * seqid;
544 };
545
546 struct nfs_lockt_args {
547 struct nfs4_sequence_args seq_args;
548 struct nfs_fh * fh;
549 struct file_lock * fl;
550 struct nfs_lowner lock_owner;
551 };
552
553 struct nfs_lockt_res {
554 struct nfs4_sequence_res seq_res;
555 struct file_lock * denied; /* LOCK, LOCKT failed */
556 };
557
558 struct nfs_release_lockowner_args {
559 struct nfs4_sequence_args seq_args;
560 struct nfs_lowner lock_owner;
561 };
562
563 struct nfs_release_lockowner_res {
564 struct nfs4_sequence_res seq_res;
565 };
566
567 struct nfs4_delegreturnargs {
568 struct nfs4_sequence_args seq_args;
569 const struct nfs_fh *fhandle;
570 const nfs4_stateid *stateid;
571 const u32 * bitmask;
572 struct nfs4_layoutreturn_args *lr_args;
573 };
574
575 struct nfs4_delegreturnres {
576 struct nfs4_sequence_res seq_res;
577 struct nfs_fattr * fattr;
578 struct nfs_server *server;
579 struct nfs4_layoutreturn_res *lr_res;
580 int lr_ret;
581 };
582
583 /*
584 * Arguments to the write call.
585 */
586 struct nfs_write_verifier {
587 char data[8];
588 };
589
590 struct nfs_writeverf {
591 struct nfs_write_verifier verifier;
592 enum nfs3_stable_how committed;
593 };
594
595 /*
596 * Arguments shared by the read and write call.
597 */
598 struct nfs_pgio_args {
599 struct nfs4_sequence_args seq_args;
600 struct nfs_fh * fh;
601 struct nfs_open_context *context;
602 struct nfs_lock_context *lock_context;
603 nfs4_stateid stateid;
604 __u64 offset;
605 __u32 count;
606 unsigned int pgbase;
607 struct page ** pages;
608 const u32 * bitmask; /* used by write */
609 enum nfs3_stable_how stable; /* used by write */
610 };
611
612 struct nfs_pgio_res {
613 struct nfs4_sequence_res seq_res;
614 struct nfs_fattr * fattr;
615 __u32 count;
616 __u32 op_status;
617 int eof; /* used by read */
618 struct nfs_writeverf * verf; /* used by write */
619 const struct nfs_server *server; /* used by write */
620
621 };
622
623 /*
624 * Arguments to the commit call.
625 */
626 struct nfs_commitargs {
627 struct nfs4_sequence_args seq_args;
628 struct nfs_fh *fh;
629 __u64 offset;
630 __u32 count;
631 const u32 *bitmask;
632 };
633
634 struct nfs_commitres {
635 struct nfs4_sequence_res seq_res;
636 __u32 op_status;
637 struct nfs_fattr *fattr;
638 struct nfs_writeverf *verf;
639 const struct nfs_server *server;
640 };
641
642 /*
643 * Common arguments to the unlink call
644 */
645 struct nfs_removeargs {
646 struct nfs4_sequence_args seq_args;
647 const struct nfs_fh *fh;
648 struct qstr name;
649 };
650
651 struct nfs_removeres {
652 struct nfs4_sequence_res seq_res;
653 struct nfs_server *server;
654 struct nfs_fattr *dir_attr;
655 struct nfs4_change_info cinfo;
656 };
657
658 /*
659 * Common arguments to the rename call
660 */
661 struct nfs_renameargs {
662 struct nfs4_sequence_args seq_args;
663 const struct nfs_fh *old_dir;
664 const struct nfs_fh *new_dir;
665 const struct qstr *old_name;
666 const struct qstr *new_name;
667 };
668
669 struct nfs_renameres {
670 struct nfs4_sequence_res seq_res;
671 struct nfs_server *server;
672 struct nfs4_change_info old_cinfo;
673 struct nfs_fattr *old_fattr;
674 struct nfs4_change_info new_cinfo;
675 struct nfs_fattr *new_fattr;
676 };
677
678 /* parsed sec= options */
679 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
680 struct nfs_auth_info {
681 unsigned int flavor_len;
682 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
683 };
684
685 /*
686 * Argument struct for decode_entry function
687 */
688 struct nfs_entry {
689 __u64 ino;
690 __u64 cookie,
691 prev_cookie;
692 const char * name;
693 unsigned int len;
694 int eof;
695 struct nfs_fh * fh;
696 struct nfs_fattr * fattr;
697 struct nfs4_label *label;
698 unsigned char d_type;
699 struct nfs_server * server;
700 };
701
702 /*
703 * The following types are for NFSv2 only.
704 */
705 struct nfs_sattrargs {
706 struct nfs_fh * fh;
707 struct iattr * sattr;
708 };
709
710 struct nfs_diropargs {
711 struct nfs_fh * fh;
712 const char * name;
713 unsigned int len;
714 };
715
716 struct nfs_createargs {
717 struct nfs_fh * fh;
718 const char * name;
719 unsigned int len;
720 struct iattr * sattr;
721 };
722
723 struct nfs_setattrargs {
724 struct nfs4_sequence_args seq_args;
725 struct nfs_fh * fh;
726 nfs4_stateid stateid;
727 struct iattr * iap;
728 const struct nfs_server * server; /* Needed for name mapping */
729 const u32 * bitmask;
730 const struct nfs4_label *label;
731 };
732
733 struct nfs_setaclargs {
734 struct nfs4_sequence_args seq_args;
735 struct nfs_fh * fh;
736 size_t acl_len;
737 struct page ** acl_pages;
738 };
739
740 struct nfs_setaclres {
741 struct nfs4_sequence_res seq_res;
742 };
743
744 struct nfs_getaclargs {
745 struct nfs4_sequence_args seq_args;
746 struct nfs_fh * fh;
747 size_t acl_len;
748 struct page ** acl_pages;
749 };
750
751 /* getxattr ACL interface flags */
752 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
753 struct nfs_getaclres {
754 struct nfs4_sequence_res seq_res;
755 size_t acl_len;
756 size_t acl_data_offset;
757 int acl_flags;
758 struct page * acl_scratch;
759 };
760
761 struct nfs_setattrres {
762 struct nfs4_sequence_res seq_res;
763 struct nfs_fattr * fattr;
764 struct nfs4_label *label;
765 const struct nfs_server * server;
766 };
767
768 struct nfs_linkargs {
769 struct nfs_fh * fromfh;
770 struct nfs_fh * tofh;
771 const char * toname;
772 unsigned int tolen;
773 };
774
775 struct nfs_symlinkargs {
776 struct nfs_fh * fromfh;
777 const char * fromname;
778 unsigned int fromlen;
779 struct page ** pages;
780 unsigned int pathlen;
781 struct iattr * sattr;
782 };
783
784 struct nfs_readdirargs {
785 struct nfs_fh * fh;
786 __u32 cookie;
787 unsigned int count;
788 struct page ** pages;
789 };
790
791 struct nfs3_getaclargs {
792 struct nfs_fh * fh;
793 int mask;
794 struct page ** pages;
795 };
796
797 struct nfs3_setaclargs {
798 struct inode * inode;
799 int mask;
800 struct posix_acl * acl_access;
801 struct posix_acl * acl_default;
802 size_t len;
803 unsigned int npages;
804 struct page ** pages;
805 };
806
807 struct nfs_diropok {
808 struct nfs_fh * fh;
809 struct nfs_fattr * fattr;
810 };
811
812 struct nfs_readlinkargs {
813 struct nfs_fh * fh;
814 unsigned int pgbase;
815 unsigned int pglen;
816 struct page ** pages;
817 };
818
819 struct nfs3_sattrargs {
820 struct nfs_fh * fh;
821 struct iattr * sattr;
822 unsigned int guard;
823 struct timespec guardtime;
824 };
825
826 struct nfs3_diropargs {
827 struct nfs_fh * fh;
828 const char * name;
829 unsigned int len;
830 };
831
832 struct nfs3_accessargs {
833 struct nfs_fh * fh;
834 __u32 access;
835 };
836
837 struct nfs3_createargs {
838 struct nfs_fh * fh;
839 const char * name;
840 unsigned int len;
841 struct iattr * sattr;
842 enum nfs3_createmode createmode;
843 __be32 verifier[2];
844 };
845
846 struct nfs3_mkdirargs {
847 struct nfs_fh * fh;
848 const char * name;
849 unsigned int len;
850 struct iattr * sattr;
851 };
852
853 struct nfs3_symlinkargs {
854 struct nfs_fh * fromfh;
855 const char * fromname;
856 unsigned int fromlen;
857 struct page ** pages;
858 unsigned int pathlen;
859 struct iattr * sattr;
860 };
861
862 struct nfs3_mknodargs {
863 struct nfs_fh * fh;
864 const char * name;
865 unsigned int len;
866 enum nfs3_ftype type;
867 struct iattr * sattr;
868 dev_t rdev;
869 };
870
871 struct nfs3_linkargs {
872 struct nfs_fh * fromfh;
873 struct nfs_fh * tofh;
874 const char * toname;
875 unsigned int tolen;
876 };
877
878 struct nfs3_readdirargs {
879 struct nfs_fh * fh;
880 __u64 cookie;
881 __be32 verf[2];
882 bool plus;
883 unsigned int count;
884 struct page ** pages;
885 };
886
887 struct nfs3_diropres {
888 struct nfs_fattr * dir_attr;
889 struct nfs_fh * fh;
890 struct nfs_fattr * fattr;
891 };
892
893 struct nfs3_accessres {
894 struct nfs_fattr * fattr;
895 __u32 access;
896 };
897
898 struct nfs3_readlinkargs {
899 struct nfs_fh * fh;
900 unsigned int pgbase;
901 unsigned int pglen;
902 struct page ** pages;
903 };
904
905 struct nfs3_linkres {
906 struct nfs_fattr * dir_attr;
907 struct nfs_fattr * fattr;
908 };
909
910 struct nfs3_readdirres {
911 struct nfs_fattr * dir_attr;
912 __be32 * verf;
913 bool plus;
914 };
915
916 struct nfs3_getaclres {
917 struct nfs_fattr * fattr;
918 int mask;
919 unsigned int acl_access_count;
920 unsigned int acl_default_count;
921 struct posix_acl * acl_access;
922 struct posix_acl * acl_default;
923 };
924
925 #if IS_ENABLED(CONFIG_NFS_V4)
926
927 typedef u64 clientid4;
928
929 struct nfs4_accessargs {
930 struct nfs4_sequence_args seq_args;
931 const struct nfs_fh * fh;
932 const u32 * bitmask;
933 u32 access;
934 };
935
936 struct nfs4_accessres {
937 struct nfs4_sequence_res seq_res;
938 const struct nfs_server * server;
939 struct nfs_fattr * fattr;
940 u32 supported;
941 u32 access;
942 };
943
944 struct nfs4_create_arg {
945 struct nfs4_sequence_args seq_args;
946 u32 ftype;
947 union {
948 struct {
949 struct page ** pages;
950 unsigned int len;
951 } symlink; /* NF4LNK */
952 struct {
953 u32 specdata1;
954 u32 specdata2;
955 } device; /* NF4BLK, NF4CHR */
956 } u;
957 const struct qstr * name;
958 const struct nfs_server * server;
959 const struct iattr * attrs;
960 const struct nfs_fh * dir_fh;
961 const u32 * bitmask;
962 const struct nfs4_label *label;
963 umode_t umask;
964 };
965
966 struct nfs4_create_res {
967 struct nfs4_sequence_res seq_res;
968 const struct nfs_server * server;
969 struct nfs_fh * fh;
970 struct nfs_fattr * fattr;
971 struct nfs4_label *label;
972 struct nfs4_change_info dir_cinfo;
973 };
974
975 struct nfs4_fsinfo_arg {
976 struct nfs4_sequence_args seq_args;
977 const struct nfs_fh * fh;
978 const u32 * bitmask;
979 };
980
981 struct nfs4_fsinfo_res {
982 struct nfs4_sequence_res seq_res;
983 struct nfs_fsinfo *fsinfo;
984 };
985
986 struct nfs4_getattr_arg {
987 struct nfs4_sequence_args seq_args;
988 const struct nfs_fh * fh;
989 const u32 * bitmask;
990 };
991
992 struct nfs4_getattr_res {
993 struct nfs4_sequence_res seq_res;
994 const struct nfs_server * server;
995 struct nfs_fattr * fattr;
996 struct nfs4_label *label;
997 };
998
999 struct nfs4_link_arg {
1000 struct nfs4_sequence_args seq_args;
1001 const struct nfs_fh * fh;
1002 const struct nfs_fh * dir_fh;
1003 const struct qstr * name;
1004 const u32 * bitmask;
1005 };
1006
1007 struct nfs4_link_res {
1008 struct nfs4_sequence_res seq_res;
1009 const struct nfs_server * server;
1010 struct nfs_fattr * fattr;
1011 struct nfs4_label *label;
1012 struct nfs4_change_info cinfo;
1013 struct nfs_fattr * dir_attr;
1014 };
1015
1016 struct nfs4_lookup_arg {
1017 struct nfs4_sequence_args seq_args;
1018 const struct nfs_fh * dir_fh;
1019 const struct qstr * name;
1020 const u32 * bitmask;
1021 };
1022
1023 struct nfs4_lookup_res {
1024 struct nfs4_sequence_res seq_res;
1025 const struct nfs_server * server;
1026 struct nfs_fattr * fattr;
1027 struct nfs_fh * fh;
1028 struct nfs4_label *label;
1029 };
1030
1031 struct nfs4_lookupp_arg {
1032 struct nfs4_sequence_args seq_args;
1033 const struct nfs_fh *fh;
1034 const u32 *bitmask;
1035 };
1036
1037 struct nfs4_lookupp_res {
1038 struct nfs4_sequence_res seq_res;
1039 const struct nfs_server *server;
1040 struct nfs_fattr *fattr;
1041 struct nfs_fh *fh;
1042 struct nfs4_label *label;
1043 };
1044
1045 struct nfs4_lookup_root_arg {
1046 struct nfs4_sequence_args seq_args;
1047 const u32 * bitmask;
1048 };
1049
1050 struct nfs4_pathconf_arg {
1051 struct nfs4_sequence_args seq_args;
1052 const struct nfs_fh * fh;
1053 const u32 * bitmask;
1054 };
1055
1056 struct nfs4_pathconf_res {
1057 struct nfs4_sequence_res seq_res;
1058 struct nfs_pathconf *pathconf;
1059 };
1060
1061 struct nfs4_readdir_arg {
1062 struct nfs4_sequence_args seq_args;
1063 const struct nfs_fh * fh;
1064 u64 cookie;
1065 nfs4_verifier verifier;
1066 u32 count;
1067 struct page ** pages; /* zero-copy data */
1068 unsigned int pgbase; /* zero-copy data */
1069 const u32 * bitmask;
1070 bool plus;
1071 };
1072
1073 struct nfs4_readdir_res {
1074 struct nfs4_sequence_res seq_res;
1075 nfs4_verifier verifier;
1076 unsigned int pgbase;
1077 };
1078
1079 struct nfs4_readlink {
1080 struct nfs4_sequence_args seq_args;
1081 const struct nfs_fh * fh;
1082 unsigned int pgbase;
1083 unsigned int pglen; /* zero-copy data */
1084 struct page ** pages; /* zero-copy data */
1085 };
1086
1087 struct nfs4_readlink_res {
1088 struct nfs4_sequence_res seq_res;
1089 };
1090
1091 struct nfs4_setclientid {
1092 const nfs4_verifier * sc_verifier;
1093 u32 sc_prog;
1094 unsigned int sc_netid_len;
1095 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
1096 unsigned int sc_uaddr_len;
1097 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1098 struct nfs_client *sc_clnt;
1099 struct rpc_cred *sc_cred;
1100 };
1101
1102 struct nfs4_setclientid_res {
1103 u64 clientid;
1104 nfs4_verifier confirm;
1105 };
1106
1107 struct nfs4_statfs_arg {
1108 struct nfs4_sequence_args seq_args;
1109 const struct nfs_fh * fh;
1110 const u32 * bitmask;
1111 };
1112
1113 struct nfs4_statfs_res {
1114 struct nfs4_sequence_res seq_res;
1115 struct nfs_fsstat *fsstat;
1116 };
1117
1118 struct nfs4_server_caps_arg {
1119 struct nfs4_sequence_args seq_args;
1120 struct nfs_fh *fhandle;
1121 const u32 * bitmask;
1122 };
1123
1124 struct nfs4_server_caps_res {
1125 struct nfs4_sequence_res seq_res;
1126 u32 attr_bitmask[3];
1127 u32 exclcreat_bitmask[3];
1128 u32 acl_bitmask;
1129 u32 has_links;
1130 u32 has_symlinks;
1131 u32 fh_expire_type;
1132 };
1133
1134 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1135 struct nfs4_pathname {
1136 unsigned int ncomponents;
1137 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1138 };
1139
1140 #define NFS4_FS_LOCATION_MAXSERVERS 10
1141 struct nfs4_fs_location {
1142 unsigned int nservers;
1143 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1144 struct nfs4_pathname rootpath;
1145 };
1146
1147 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1148 struct nfs4_fs_locations {
1149 struct nfs_fattr fattr;
1150 const struct nfs_server *server;
1151 struct nfs4_pathname fs_path;
1152 int nlocations;
1153 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1154 };
1155
1156 struct nfs4_fs_locations_arg {
1157 struct nfs4_sequence_args seq_args;
1158 const struct nfs_fh *dir_fh;
1159 const struct nfs_fh *fh;
1160 const struct qstr *name;
1161 struct page *page;
1162 const u32 *bitmask;
1163 clientid4 clientid;
1164 unsigned char migration:1, renew:1;
1165 };
1166
1167 struct nfs4_fs_locations_res {
1168 struct nfs4_sequence_res seq_res;
1169 struct nfs4_fs_locations *fs_locations;
1170 unsigned char migration:1, renew:1;
1171 };
1172
1173 struct nfs4_secinfo4 {
1174 u32 flavor;
1175 struct rpcsec_gss_info flavor_info;
1176 };
1177
1178 struct nfs4_secinfo_flavors {
1179 unsigned int num_flavors;
1180 struct nfs4_secinfo4 flavors[0];
1181 };
1182
1183 struct nfs4_secinfo_arg {
1184 struct nfs4_sequence_args seq_args;
1185 const struct nfs_fh *dir_fh;
1186 const struct qstr *name;
1187 };
1188
1189 struct nfs4_secinfo_res {
1190 struct nfs4_sequence_res seq_res;
1191 struct nfs4_secinfo_flavors *flavors;
1192 };
1193
1194 struct nfs4_fsid_present_arg {
1195 struct nfs4_sequence_args seq_args;
1196 const struct nfs_fh *fh;
1197 clientid4 clientid;
1198 unsigned char renew:1;
1199 };
1200
1201 struct nfs4_fsid_present_res {
1202 struct nfs4_sequence_res seq_res;
1203 struct nfs_fh *fh;
1204 unsigned char renew:1;
1205 };
1206
1207 #endif /* CONFIG_NFS_V4 */
1208
1209 struct nfstime4 {
1210 u64 seconds;
1211 u32 nseconds;
1212 };
1213
1214 #ifdef CONFIG_NFS_V4_1
1215
1216 struct pnfs_commit_bucket {
1217 struct list_head written;
1218 struct list_head committing;
1219 struct pnfs_layout_segment *wlseg;
1220 struct pnfs_layout_segment *clseg;
1221 struct nfs_writeverf direct_verf;
1222 };
1223
1224 struct pnfs_ds_commit_info {
1225 int nwritten;
1226 int ncommitting;
1227 int nbuckets;
1228 struct pnfs_commit_bucket *buckets;
1229 };
1230
1231 struct nfs41_state_protection {
1232 u32 how;
1233 struct nfs4_op_map enforce;
1234 struct nfs4_op_map allow;
1235 };
1236
1237 struct nfs41_exchange_id_args {
1238 struct nfs_client *client;
1239 nfs4_verifier verifier;
1240 u32 flags;
1241 struct nfs41_state_protection state_protect;
1242 };
1243
1244 struct nfs41_server_owner {
1245 uint64_t minor_id;
1246 uint32_t major_id_sz;
1247 char major_id[NFS4_OPAQUE_LIMIT];
1248 };
1249
1250 struct nfs41_server_scope {
1251 uint32_t server_scope_sz;
1252 char server_scope[NFS4_OPAQUE_LIMIT];
1253 };
1254
1255 struct nfs41_impl_id {
1256 char domain[NFS4_OPAQUE_LIMIT + 1];
1257 char name[NFS4_OPAQUE_LIMIT + 1];
1258 struct nfstime4 date;
1259 };
1260
1261 struct nfs41_bind_conn_to_session_args {
1262 struct nfs_client *client;
1263 struct nfs4_sessionid sessionid;
1264 u32 dir;
1265 bool use_conn_in_rdma_mode;
1266 };
1267
1268 struct nfs41_bind_conn_to_session_res {
1269 struct nfs4_sessionid sessionid;
1270 u32 dir;
1271 bool use_conn_in_rdma_mode;
1272 };
1273
1274 struct nfs41_exchange_id_res {
1275 u64 clientid;
1276 u32 seqid;
1277 u32 flags;
1278 struct nfs41_server_owner *server_owner;
1279 struct nfs41_server_scope *server_scope;
1280 struct nfs41_impl_id *impl_id;
1281 struct nfs41_state_protection state_protect;
1282 };
1283
1284 struct nfs41_create_session_args {
1285 struct nfs_client *client;
1286 u64 clientid;
1287 uint32_t seqid;
1288 uint32_t flags;
1289 uint32_t cb_program;
1290 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1291 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1292 };
1293
1294 struct nfs41_create_session_res {
1295 struct nfs4_sessionid sessionid;
1296 uint32_t seqid;
1297 uint32_t flags;
1298 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1299 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1300 };
1301
1302 struct nfs41_reclaim_complete_args {
1303 struct nfs4_sequence_args seq_args;
1304 /* In the future extend to include curr_fh for use with migration */
1305 unsigned char one_fs:1;
1306 };
1307
1308 struct nfs41_reclaim_complete_res {
1309 struct nfs4_sequence_res seq_res;
1310 };
1311
1312 #define SECINFO_STYLE_CURRENT_FH 0
1313 #define SECINFO_STYLE_PARENT 1
1314 struct nfs41_secinfo_no_name_args {
1315 struct nfs4_sequence_args seq_args;
1316 int style;
1317 };
1318
1319 struct nfs41_test_stateid_args {
1320 struct nfs4_sequence_args seq_args;
1321 nfs4_stateid *stateid;
1322 };
1323
1324 struct nfs41_test_stateid_res {
1325 struct nfs4_sequence_res seq_res;
1326 unsigned int status;
1327 };
1328
1329 struct nfs41_free_stateid_args {
1330 struct nfs4_sequence_args seq_args;
1331 nfs4_stateid stateid;
1332 };
1333
1334 struct nfs41_free_stateid_res {
1335 struct nfs4_sequence_res seq_res;
1336 unsigned int status;
1337 };
1338
1339 static inline void
1340 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1341 {
1342 kfree(cinfo->buckets);
1343 }
1344
1345 #else
1346
1347 struct pnfs_ds_commit_info {
1348 };
1349
1350 static inline void
1351 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1352 {
1353 }
1354
1355 #endif /* CONFIG_NFS_V4_1 */
1356
1357 #ifdef CONFIG_NFS_V4_2
1358 struct nfs42_falloc_args {
1359 struct nfs4_sequence_args seq_args;
1360
1361 struct nfs_fh *falloc_fh;
1362 nfs4_stateid falloc_stateid;
1363 u64 falloc_offset;
1364 u64 falloc_length;
1365 const u32 *falloc_bitmask;
1366 };
1367
1368 struct nfs42_falloc_res {
1369 struct nfs4_sequence_res seq_res;
1370 unsigned int status;
1371
1372 struct nfs_fattr *falloc_fattr;
1373 const struct nfs_server *falloc_server;
1374 };
1375
1376 struct nfs42_copy_args {
1377 struct nfs4_sequence_args seq_args;
1378
1379 struct nfs_fh *src_fh;
1380 nfs4_stateid src_stateid;
1381 u64 src_pos;
1382
1383 struct nfs_fh *dst_fh;
1384 nfs4_stateid dst_stateid;
1385 u64 dst_pos;
1386
1387 u64 count;
1388 };
1389
1390 struct nfs42_write_res {
1391 u64 count;
1392 struct nfs_writeverf verifier;
1393 };
1394
1395 struct nfs42_copy_res {
1396 struct nfs4_sequence_res seq_res;
1397 struct nfs42_write_res write_res;
1398 bool consecutive;
1399 bool synchronous;
1400 struct nfs_commitres commit_res;
1401 };
1402
1403 struct nfs42_seek_args {
1404 struct nfs4_sequence_args seq_args;
1405
1406 struct nfs_fh *sa_fh;
1407 nfs4_stateid sa_stateid;
1408 u64 sa_offset;
1409 u32 sa_what;
1410 };
1411
1412 struct nfs42_seek_res {
1413 struct nfs4_sequence_res seq_res;
1414 unsigned int status;
1415
1416 u32 sr_eof;
1417 u64 sr_offset;
1418 };
1419 #endif
1420
1421 struct nfs_page;
1422
1423 #define NFS_PAGEVEC_SIZE (8U)
1424
1425 struct nfs_page_array {
1426 struct page **pagevec;
1427 unsigned int npages; /* Max length of pagevec */
1428 struct page *page_array[NFS_PAGEVEC_SIZE];
1429 };
1430
1431 /* used as flag bits in nfs_pgio_header */
1432 enum {
1433 NFS_IOHDR_ERROR = 0,
1434 NFS_IOHDR_EOF,
1435 NFS_IOHDR_REDO,
1436 NFS_IOHDR_STAT,
1437 };
1438
1439 struct nfs_io_completion;
1440 struct nfs_pgio_header {
1441 struct inode *inode;
1442 struct rpc_cred *cred;
1443 struct list_head pages;
1444 struct nfs_page *req;
1445 struct nfs_writeverf verf; /* Used for writes */
1446 fmode_t rw_mode;
1447 struct pnfs_layout_segment *lseg;
1448 loff_t io_start;
1449 const struct rpc_call_ops *mds_ops;
1450 void (*release) (struct nfs_pgio_header *hdr);
1451 const struct nfs_pgio_completion_ops *completion_ops;
1452 const struct nfs_rw_ops *rw_ops;
1453 struct nfs_io_completion *io_completion;
1454 struct nfs_direct_req *dreq;
1455 spinlock_t lock;
1456 /* fields protected by lock */
1457 int pnfs_error;
1458 int error; /* merge with pnfs_error */
1459 unsigned long good_bytes; /* boundary of good data */
1460 unsigned long flags;
1461
1462 /*
1463 * rpc data
1464 */
1465 struct rpc_task task;
1466 struct nfs_fattr fattr;
1467 struct nfs_pgio_args args; /* argument struct */
1468 struct nfs_pgio_res res; /* result struct */
1469 unsigned long timestamp; /* For lease renewal */
1470 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1471 __u64 mds_offset; /* Filelayout dense stripe */
1472 struct nfs_page_array page_array;
1473 struct nfs_client *ds_clp; /* pNFS data server */
1474 int ds_commit_idx; /* ds index if ds_clp is set */
1475 int pgio_mirror_idx;/* mirror index in pgio layer */
1476 };
1477
1478 struct nfs_mds_commit_info {
1479 atomic_t rpcs_out;
1480 atomic_long_t ncommit;
1481 struct list_head list;
1482 };
1483
1484 struct nfs_commit_info;
1485 struct nfs_commit_data;
1486 struct nfs_inode;
1487 struct nfs_commit_completion_ops {
1488 void (*completion) (struct nfs_commit_data *data);
1489 void (*resched_write) (struct nfs_commit_info *, struct nfs_page *);
1490 };
1491
1492 struct nfs_commit_info {
1493 struct inode *inode; /* Needed for inode->i_lock */
1494 struct nfs_mds_commit_info *mds;
1495 struct pnfs_ds_commit_info *ds;
1496 struct nfs_direct_req *dreq; /* O_DIRECT request */
1497 const struct nfs_commit_completion_ops *completion_ops;
1498 };
1499
1500 struct nfs_commit_data {
1501 struct rpc_task task;
1502 struct inode *inode;
1503 struct rpc_cred *cred;
1504 struct nfs_fattr fattr;
1505 struct nfs_writeverf verf;
1506 struct list_head pages; /* Coalesced requests we wish to flush */
1507 struct list_head list; /* lists of struct nfs_write_data */
1508 struct nfs_direct_req *dreq; /* O_DIRECT request */
1509 struct nfs_commitargs args; /* argument struct */
1510 struct nfs_commitres res; /* result struct */
1511 struct nfs_open_context *context;
1512 struct pnfs_layout_segment *lseg;
1513 struct nfs_client *ds_clp; /* pNFS data server */
1514 int ds_commit_index;
1515 loff_t lwb;
1516 const struct rpc_call_ops *mds_ops;
1517 const struct nfs_commit_completion_ops *completion_ops;
1518 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1519 unsigned long flags;
1520 };
1521
1522 struct nfs_pgio_completion_ops {
1523 void (*error_cleanup)(struct list_head *head, int);
1524 void (*init_hdr)(struct nfs_pgio_header *hdr);
1525 void (*completion)(struct nfs_pgio_header *hdr);
1526 void (*reschedule_io)(struct nfs_pgio_header *hdr);
1527 };
1528
1529 struct nfs_unlinkdata {
1530 struct nfs_removeargs args;
1531 struct nfs_removeres res;
1532 struct dentry *dentry;
1533 wait_queue_head_t wq;
1534 struct rpc_cred *cred;
1535 struct nfs_fattr dir_attr;
1536 long timeout;
1537 };
1538
1539 struct nfs_renamedata {
1540 struct nfs_renameargs args;
1541 struct nfs_renameres res;
1542 struct rpc_cred *cred;
1543 struct inode *old_dir;
1544 struct dentry *old_dentry;
1545 struct nfs_fattr old_fattr;
1546 struct inode *new_dir;
1547 struct dentry *new_dentry;
1548 struct nfs_fattr new_fattr;
1549 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1550 long timeout;
1551 bool cancelled;
1552 };
1553
1554 struct nfs_access_entry;
1555 struct nfs_client;
1556 struct rpc_timeout;
1557 struct nfs_subversion;
1558 struct nfs_mount_info;
1559 struct nfs_client_initdata;
1560 struct nfs_pageio_descriptor;
1561
1562 /*
1563 * RPC procedure vector for NFSv2/NFSv3 demuxing
1564 */
1565 struct nfs_rpc_ops {
1566 u32 version; /* Protocol version */
1567 const struct dentry_operations *dentry_ops;
1568 const struct inode_operations *dir_inode_ops;
1569 const struct inode_operations *file_inode_ops;
1570 const struct file_operations *file_ops;
1571 const struct nlmclnt_operations *nlmclnt_ops;
1572
1573 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1574 struct nfs_fsinfo *);
1575 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1576 struct nfs_fh *, struct nfs_fattr *);
1577 struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1578 struct nfs_subversion *);
1579 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1580 struct nfs_fattr *, struct nfs4_label *);
1581 int (*setattr) (struct dentry *, struct nfs_fattr *,
1582 struct iattr *);
1583 int (*lookup) (struct inode *, const struct qstr *,
1584 struct nfs_fh *, struct nfs_fattr *,
1585 struct nfs4_label *);
1586 int (*lookupp) (struct inode *, struct nfs_fh *,
1587 struct nfs_fattr *, struct nfs4_label *);
1588 int (*access) (struct inode *, struct nfs_access_entry *);
1589 int (*readlink)(struct inode *, struct page *, unsigned int,
1590 unsigned int);
1591 int (*create) (struct inode *, struct dentry *,
1592 struct iattr *, int);
1593 int (*remove) (struct inode *, const struct qstr *);
1594 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1595 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1596 int (*unlink_done) (struct rpc_task *, struct inode *);
1597 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1598 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1599 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1600 int (*link) (struct inode *, struct inode *, const struct qstr *);
1601 int (*symlink) (struct inode *, struct dentry *, struct page *,
1602 unsigned int, struct iattr *);
1603 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1604 int (*rmdir) (struct inode *, const struct qstr *);
1605 int (*readdir) (struct dentry *, struct rpc_cred *,
1606 u64, struct page **, unsigned int, bool);
1607 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1608 dev_t);
1609 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1610 struct nfs_fsstat *);
1611 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1612 struct nfs_fsinfo *);
1613 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1614 struct nfs_pathconf *);
1615 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1616 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool);
1617 int (*pgio_rpc_prepare)(struct rpc_task *,
1618 struct nfs_pgio_header *);
1619 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1620 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1621 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1622 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1623 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1624 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1625 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1626 int (*lock)(struct file *, int, struct file_lock *);
1627 int (*lock_check_bounds)(const struct file_lock *);
1628 void (*clear_acl_cache)(struct inode *);
1629 void (*close_context)(struct nfs_open_context *ctx, int);
1630 struct inode * (*open_context) (struct inode *dir,
1631 struct nfs_open_context *ctx,
1632 int open_flags,
1633 struct iattr *iattr,
1634 int *);
1635 int (*have_delegation)(struct inode *, fmode_t);
1636 int (*return_delegation)(struct inode *);
1637 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1638 struct nfs_client *(*init_client) (struct nfs_client *,
1639 const struct nfs_client_initdata *);
1640 void (*free_client) (struct nfs_client *);
1641 struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1642 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1643 struct nfs_fattr *, rpc_authflavor_t);
1644 };
1645
1646 /*
1647 * NFS_CALL(getattr, inode, (fattr));
1648 * into
1649 * NFS_PROTO(inode)->getattr(fattr);
1650 */
1651 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1652
1653 /*
1654 * Function vectors etc. for the NFS client
1655 */
1656 extern const struct nfs_rpc_ops nfs_v2_clientops;
1657 extern const struct nfs_rpc_ops nfs_v3_clientops;
1658 extern const struct nfs_rpc_ops nfs_v4_clientops;
1659 extern const struct rpc_version nfs_version2;
1660 extern const struct rpc_version nfs_version3;
1661 extern const struct rpc_version nfs_version4;
1662
1663 extern const struct rpc_version nfsacl_version3;
1664 extern const struct rpc_program nfsacl_program;
1665
1666 #endif
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