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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
[mirror_ubuntu-eoan-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 int status;
263 __u32 return_on_close;
264 struct pnfs_layout_range range;
265 __u32 type;
266 nfs4_stateid stateid;
267 struct nfs4_layoutdriver_data *layoutp;
268 };
269
270 struct nfs4_layoutget {
271 struct nfs4_layoutget_args args;
272 struct nfs4_layoutget_res res;
273 struct rpc_cred *cred;
274 gfp_t gfp_flags;
275 };
276
277 struct nfs4_getdeviceinfo_args {
278 struct nfs4_sequence_args seq_args;
279 struct pnfs_device *pdev;
280 __u32 notify_types;
281 };
282
283 struct nfs4_getdeviceinfo_res {
284 struct nfs4_sequence_res seq_res;
285 struct pnfs_device *pdev;
286 __u32 notification;
287 };
288
289 struct nfs4_layoutcommit_args {
290 struct nfs4_sequence_args seq_args;
291 nfs4_stateid stateid;
292 __u64 lastbytewritten;
293 struct inode *inode;
294 const u32 *bitmask;
295 size_t layoutupdate_len;
296 struct page *layoutupdate_page;
297 struct page **layoutupdate_pages;
298 __be32 *start_p;
299 };
300
301 struct nfs4_layoutcommit_res {
302 struct nfs4_sequence_res seq_res;
303 struct nfs_fattr *fattr;
304 const struct nfs_server *server;
305 int status;
306 };
307
308 struct nfs4_layoutcommit_data {
309 struct rpc_task task;
310 struct nfs_fattr fattr;
311 struct list_head lseg_list;
312 struct rpc_cred *cred;
313 struct inode *inode;
314 struct nfs4_layoutcommit_args args;
315 struct nfs4_layoutcommit_res res;
316 };
317
318 struct nfs4_layoutreturn_args {
319 struct nfs4_sequence_args seq_args;
320 struct pnfs_layout_hdr *layout;
321 struct inode *inode;
322 struct pnfs_layout_range range;
323 nfs4_stateid stateid;
324 __u32 layout_type;
325 struct nfs4_xdr_opaque_data *ld_private;
326 };
327
328 struct nfs4_layoutreturn_res {
329 struct nfs4_sequence_res seq_res;
330 u32 lrs_present;
331 nfs4_stateid stateid;
332 };
333
334 struct nfs4_layoutreturn {
335 struct nfs4_layoutreturn_args args;
336 struct nfs4_layoutreturn_res res;
337 struct rpc_cred *cred;
338 struct nfs_client *clp;
339 struct inode *inode;
340 int rpc_status;
341 struct nfs4_xdr_opaque_data ld_private;
342 };
343
344 #define PNFS_LAYOUTSTATS_MAXSIZE 256
345
346 struct nfs42_layoutstat_args;
347 struct nfs42_layoutstat_devinfo;
348 typedef void (*layoutstats_encode_t)(struct xdr_stream *,
349 struct nfs42_layoutstat_args *,
350 struct nfs42_layoutstat_devinfo *);
351
352 /* Per file per deviceid layoutstats */
353 struct nfs42_layoutstat_devinfo {
354 struct nfs4_deviceid dev_id;
355 __u64 offset;
356 __u64 length;
357 __u64 read_count;
358 __u64 read_bytes;
359 __u64 write_count;
360 __u64 write_bytes;
361 __u32 layout_type;
362 struct nfs4_xdr_opaque_data ld_private;
363 };
364
365 struct nfs42_layoutstat_args {
366 struct nfs4_sequence_args seq_args;
367 struct nfs_fh *fh;
368 struct inode *inode;
369 nfs4_stateid stateid;
370 int num_dev;
371 struct nfs42_layoutstat_devinfo *devinfo;
372 };
373
374 struct nfs42_layoutstat_res {
375 struct nfs4_sequence_res seq_res;
376 int num_dev;
377 int rpc_status;
378 };
379
380 struct nfs42_layoutstat_data {
381 struct inode *inode;
382 struct nfs42_layoutstat_args args;
383 struct nfs42_layoutstat_res res;
384 };
385
386 struct nfs42_clone_args {
387 struct nfs4_sequence_args seq_args;
388 struct nfs_fh *src_fh;
389 struct nfs_fh *dst_fh;
390 nfs4_stateid src_stateid;
391 nfs4_stateid dst_stateid;
392 __u64 src_offset;
393 __u64 dst_offset;
394 __u64 count;
395 const u32 *dst_bitmask;
396 };
397
398 struct nfs42_clone_res {
399 struct nfs4_sequence_res seq_res;
400 unsigned int rpc_status;
401 struct nfs_fattr *dst_fattr;
402 const struct nfs_server *server;
403 };
404
405 struct stateowner_id {
406 __u64 create_time;
407 __u32 uniquifier;
408 };
409
410 /*
411 * Arguments to the open call.
412 */
413 struct nfs_openargs {
414 struct nfs4_sequence_args seq_args;
415 const struct nfs_fh * fh;
416 struct nfs_seqid * seqid;
417 int open_flags;
418 fmode_t fmode;
419 u32 share_access;
420 u32 access;
421 __u64 clientid;
422 struct stateowner_id id;
423 union {
424 struct {
425 struct iattr * attrs; /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
426 nfs4_verifier verifier; /* EXCLUSIVE */
427 };
428 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
429 fmode_t delegation_type; /* CLAIM_PREVIOUS */
430 } u;
431 const struct qstr * name;
432 const struct nfs_server *server; /* Needed for ID mapping */
433 const u32 * bitmask;
434 const u32 * open_bitmap;
435 enum open_claim_type4 claim;
436 enum createmode4 createmode;
437 const struct nfs4_label *label;
438 umode_t umask;
439 struct nfs4_layoutget_args *lg_args;
440 };
441
442 struct nfs_openres {
443 struct nfs4_sequence_res seq_res;
444 nfs4_stateid stateid;
445 struct nfs_fh fh;
446 struct nfs4_change_info cinfo;
447 __u32 rflags;
448 struct nfs_fattr * f_attr;
449 struct nfs4_label *f_label;
450 struct nfs_seqid * seqid;
451 const struct nfs_server *server;
452 fmode_t delegation_type;
453 nfs4_stateid delegation;
454 unsigned long pagemod_limit;
455 __u32 do_recall;
456 __u32 attrset[NFS4_BITMAP_SIZE];
457 struct nfs4_string *owner;
458 struct nfs4_string *group_owner;
459 __u32 access_request;
460 __u32 access_supported;
461 __u32 access_result;
462 struct nfs4_layoutget_res *lg_res;
463 };
464
465 /*
466 * Arguments to the open_confirm call.
467 */
468 struct nfs_open_confirmargs {
469 struct nfs4_sequence_args seq_args;
470 const struct nfs_fh * fh;
471 nfs4_stateid * stateid;
472 struct nfs_seqid * seqid;
473 };
474
475 struct nfs_open_confirmres {
476 struct nfs4_sequence_res seq_res;
477 nfs4_stateid stateid;
478 struct nfs_seqid * seqid;
479 };
480
481 /*
482 * Arguments to the close call.
483 */
484 struct nfs_closeargs {
485 struct nfs4_sequence_args seq_args;
486 struct nfs_fh * fh;
487 nfs4_stateid stateid;
488 struct nfs_seqid * seqid;
489 fmode_t fmode;
490 u32 share_access;
491 const u32 * bitmask;
492 struct nfs4_layoutreturn_args *lr_args;
493 };
494
495 struct nfs_closeres {
496 struct nfs4_sequence_res seq_res;
497 nfs4_stateid stateid;
498 struct nfs_fattr * fattr;
499 struct nfs_seqid * seqid;
500 const struct nfs_server *server;
501 struct nfs4_layoutreturn_res *lr_res;
502 int lr_ret;
503 };
504 /*
505 * * Arguments to the lock,lockt, and locku call.
506 * */
507 struct nfs_lowner {
508 __u64 clientid;
509 __u64 id;
510 dev_t s_dev;
511 };
512
513 struct nfs_lock_args {
514 struct nfs4_sequence_args seq_args;
515 struct nfs_fh * fh;
516 struct file_lock * fl;
517 struct nfs_seqid * lock_seqid;
518 nfs4_stateid lock_stateid;
519 struct nfs_seqid * open_seqid;
520 nfs4_stateid open_stateid;
521 struct nfs_lowner lock_owner;
522 unsigned char block : 1;
523 unsigned char reclaim : 1;
524 unsigned char new_lock : 1;
525 unsigned char new_lock_owner : 1;
526 };
527
528 struct nfs_lock_res {
529 struct nfs4_sequence_res seq_res;
530 nfs4_stateid stateid;
531 struct nfs_seqid * lock_seqid;
532 struct nfs_seqid * open_seqid;
533 };
534
535 struct nfs_locku_args {
536 struct nfs4_sequence_args seq_args;
537 struct nfs_fh * fh;
538 struct file_lock * fl;
539 struct nfs_seqid * seqid;
540 nfs4_stateid stateid;
541 };
542
543 struct nfs_locku_res {
544 struct nfs4_sequence_res seq_res;
545 nfs4_stateid stateid;
546 struct nfs_seqid * seqid;
547 };
548
549 struct nfs_lockt_args {
550 struct nfs4_sequence_args seq_args;
551 struct nfs_fh * fh;
552 struct file_lock * fl;
553 struct nfs_lowner lock_owner;
554 };
555
556 struct nfs_lockt_res {
557 struct nfs4_sequence_res seq_res;
558 struct file_lock * denied; /* LOCK, LOCKT failed */
559 };
560
561 struct nfs_release_lockowner_args {
562 struct nfs4_sequence_args seq_args;
563 struct nfs_lowner lock_owner;
564 };
565
566 struct nfs_release_lockowner_res {
567 struct nfs4_sequence_res seq_res;
568 };
569
570 struct nfs4_delegreturnargs {
571 struct nfs4_sequence_args seq_args;
572 const struct nfs_fh *fhandle;
573 const nfs4_stateid *stateid;
574 const u32 * bitmask;
575 struct nfs4_layoutreturn_args *lr_args;
576 };
577
578 struct nfs4_delegreturnres {
579 struct nfs4_sequence_res seq_res;
580 struct nfs_fattr * fattr;
581 struct nfs_server *server;
582 struct nfs4_layoutreturn_res *lr_res;
583 int lr_ret;
584 };
585
586 /*
587 * Arguments to the write call.
588 */
589 struct nfs_write_verifier {
590 char data[8];
591 };
592
593 struct nfs_writeverf {
594 struct nfs_write_verifier verifier;
595 enum nfs3_stable_how committed;
596 };
597
598 /*
599 * Arguments shared by the read and write call.
600 */
601 struct nfs_pgio_args {
602 struct nfs4_sequence_args seq_args;
603 struct nfs_fh * fh;
604 struct nfs_open_context *context;
605 struct nfs_lock_context *lock_context;
606 nfs4_stateid stateid;
607 __u64 offset;
608 __u32 count;
609 unsigned int pgbase;
610 struct page ** pages;
611 union {
612 unsigned int replen; /* used by read */
613 struct {
614 const u32 * bitmask; /* used by write */
615 enum nfs3_stable_how stable; /* used by write */
616 };
617 };
618 };
619
620 struct nfs_pgio_res {
621 struct nfs4_sequence_res seq_res;
622 struct nfs_fattr * fattr;
623 __u32 count;
624 __u32 op_status;
625 union {
626 struct {
627 unsigned int replen; /* used by read */
628 int eof; /* used by read */
629 };
630 struct {
631 struct nfs_writeverf * verf; /* used by write */
632 const struct nfs_server *server; /* used by write */
633 };
634 };
635 };
636
637 /*
638 * Arguments to the commit call.
639 */
640 struct nfs_commitargs {
641 struct nfs4_sequence_args seq_args;
642 struct nfs_fh *fh;
643 __u64 offset;
644 __u32 count;
645 const u32 *bitmask;
646 };
647
648 struct nfs_commitres {
649 struct nfs4_sequence_res seq_res;
650 __u32 op_status;
651 struct nfs_fattr *fattr;
652 struct nfs_writeverf *verf;
653 const struct nfs_server *server;
654 };
655
656 /*
657 * Common arguments to the unlink call
658 */
659 struct nfs_removeargs {
660 struct nfs4_sequence_args seq_args;
661 const struct nfs_fh *fh;
662 struct qstr name;
663 };
664
665 struct nfs_removeres {
666 struct nfs4_sequence_res seq_res;
667 struct nfs_server *server;
668 struct nfs_fattr *dir_attr;
669 struct nfs4_change_info cinfo;
670 };
671
672 /*
673 * Common arguments to the rename call
674 */
675 struct nfs_renameargs {
676 struct nfs4_sequence_args seq_args;
677 const struct nfs_fh *old_dir;
678 const struct nfs_fh *new_dir;
679 const struct qstr *old_name;
680 const struct qstr *new_name;
681 };
682
683 struct nfs_renameres {
684 struct nfs4_sequence_res seq_res;
685 struct nfs_server *server;
686 struct nfs4_change_info old_cinfo;
687 struct nfs_fattr *old_fattr;
688 struct nfs4_change_info new_cinfo;
689 struct nfs_fattr *new_fattr;
690 };
691
692 /* parsed sec= options */
693 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
694 struct nfs_auth_info {
695 unsigned int flavor_len;
696 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
697 };
698
699 /*
700 * Argument struct for decode_entry function
701 */
702 struct nfs_entry {
703 __u64 ino;
704 __u64 cookie,
705 prev_cookie;
706 const char * name;
707 unsigned int len;
708 int eof;
709 struct nfs_fh * fh;
710 struct nfs_fattr * fattr;
711 struct nfs4_label *label;
712 unsigned char d_type;
713 struct nfs_server * server;
714 };
715
716 /*
717 * The following types are for NFSv2 only.
718 */
719 struct nfs_sattrargs {
720 struct nfs_fh * fh;
721 struct iattr * sattr;
722 };
723
724 struct nfs_diropargs {
725 struct nfs_fh * fh;
726 const char * name;
727 unsigned int len;
728 };
729
730 struct nfs_createargs {
731 struct nfs_fh * fh;
732 const char * name;
733 unsigned int len;
734 struct iattr * sattr;
735 };
736
737 struct nfs_setattrargs {
738 struct nfs4_sequence_args seq_args;
739 struct nfs_fh * fh;
740 nfs4_stateid stateid;
741 struct iattr * iap;
742 const struct nfs_server * server; /* Needed for name mapping */
743 const u32 * bitmask;
744 const struct nfs4_label *label;
745 };
746
747 struct nfs_setaclargs {
748 struct nfs4_sequence_args seq_args;
749 struct nfs_fh * fh;
750 size_t acl_len;
751 struct page ** acl_pages;
752 };
753
754 struct nfs_setaclres {
755 struct nfs4_sequence_res seq_res;
756 };
757
758 struct nfs_getaclargs {
759 struct nfs4_sequence_args seq_args;
760 struct nfs_fh * fh;
761 size_t acl_len;
762 struct page ** acl_pages;
763 };
764
765 /* getxattr ACL interface flags */
766 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
767 struct nfs_getaclres {
768 struct nfs4_sequence_res seq_res;
769 size_t acl_len;
770 size_t acl_data_offset;
771 int acl_flags;
772 struct page * acl_scratch;
773 };
774
775 struct nfs_setattrres {
776 struct nfs4_sequence_res seq_res;
777 struct nfs_fattr * fattr;
778 struct nfs4_label *label;
779 const struct nfs_server * server;
780 };
781
782 struct nfs_linkargs {
783 struct nfs_fh * fromfh;
784 struct nfs_fh * tofh;
785 const char * toname;
786 unsigned int tolen;
787 };
788
789 struct nfs_symlinkargs {
790 struct nfs_fh * fromfh;
791 const char * fromname;
792 unsigned int fromlen;
793 struct page ** pages;
794 unsigned int pathlen;
795 struct iattr * sattr;
796 };
797
798 struct nfs_readdirargs {
799 struct nfs_fh * fh;
800 __u32 cookie;
801 unsigned int count;
802 struct page ** pages;
803 };
804
805 struct nfs3_getaclargs {
806 struct nfs_fh * fh;
807 int mask;
808 struct page ** pages;
809 };
810
811 struct nfs3_setaclargs {
812 struct inode * inode;
813 int mask;
814 struct posix_acl * acl_access;
815 struct posix_acl * acl_default;
816 size_t len;
817 unsigned int npages;
818 struct page ** pages;
819 };
820
821 struct nfs_diropok {
822 struct nfs_fh * fh;
823 struct nfs_fattr * fattr;
824 };
825
826 struct nfs_readlinkargs {
827 struct nfs_fh * fh;
828 unsigned int pgbase;
829 unsigned int pglen;
830 struct page ** pages;
831 };
832
833 struct nfs3_sattrargs {
834 struct nfs_fh * fh;
835 struct iattr * sattr;
836 unsigned int guard;
837 struct timespec guardtime;
838 };
839
840 struct nfs3_diropargs {
841 struct nfs_fh * fh;
842 const char * name;
843 unsigned int len;
844 };
845
846 struct nfs3_accessargs {
847 struct nfs_fh * fh;
848 __u32 access;
849 };
850
851 struct nfs3_createargs {
852 struct nfs_fh * fh;
853 const char * name;
854 unsigned int len;
855 struct iattr * sattr;
856 enum nfs3_createmode createmode;
857 __be32 verifier[2];
858 };
859
860 struct nfs3_mkdirargs {
861 struct nfs_fh * fh;
862 const char * name;
863 unsigned int len;
864 struct iattr * sattr;
865 };
866
867 struct nfs3_symlinkargs {
868 struct nfs_fh * fromfh;
869 const char * fromname;
870 unsigned int fromlen;
871 struct page ** pages;
872 unsigned int pathlen;
873 struct iattr * sattr;
874 };
875
876 struct nfs3_mknodargs {
877 struct nfs_fh * fh;
878 const char * name;
879 unsigned int len;
880 enum nfs3_ftype type;
881 struct iattr * sattr;
882 dev_t rdev;
883 };
884
885 struct nfs3_linkargs {
886 struct nfs_fh * fromfh;
887 struct nfs_fh * tofh;
888 const char * toname;
889 unsigned int tolen;
890 };
891
892 struct nfs3_readdirargs {
893 struct nfs_fh * fh;
894 __u64 cookie;
895 __be32 verf[2];
896 bool plus;
897 unsigned int count;
898 struct page ** pages;
899 };
900
901 struct nfs3_diropres {
902 struct nfs_fattr * dir_attr;
903 struct nfs_fh * fh;
904 struct nfs_fattr * fattr;
905 };
906
907 struct nfs3_accessres {
908 struct nfs_fattr * fattr;
909 __u32 access;
910 };
911
912 struct nfs3_readlinkargs {
913 struct nfs_fh * fh;
914 unsigned int pgbase;
915 unsigned int pglen;
916 struct page ** pages;
917 };
918
919 struct nfs3_linkres {
920 struct nfs_fattr * dir_attr;
921 struct nfs_fattr * fattr;
922 };
923
924 struct nfs3_readdirres {
925 struct nfs_fattr * dir_attr;
926 __be32 * verf;
927 bool plus;
928 };
929
930 struct nfs3_getaclres {
931 struct nfs_fattr * fattr;
932 int mask;
933 unsigned int acl_access_count;
934 unsigned int acl_default_count;
935 struct posix_acl * acl_access;
936 struct posix_acl * acl_default;
937 };
938
939 #if IS_ENABLED(CONFIG_NFS_V4)
940
941 typedef u64 clientid4;
942
943 struct nfs4_accessargs {
944 struct nfs4_sequence_args seq_args;
945 const struct nfs_fh * fh;
946 const u32 * bitmask;
947 u32 access;
948 };
949
950 struct nfs4_accessres {
951 struct nfs4_sequence_res seq_res;
952 const struct nfs_server * server;
953 struct nfs_fattr * fattr;
954 u32 supported;
955 u32 access;
956 };
957
958 struct nfs4_create_arg {
959 struct nfs4_sequence_args seq_args;
960 u32 ftype;
961 union {
962 struct {
963 struct page ** pages;
964 unsigned int len;
965 } symlink; /* NF4LNK */
966 struct {
967 u32 specdata1;
968 u32 specdata2;
969 } device; /* NF4BLK, NF4CHR */
970 } u;
971 const struct qstr * name;
972 const struct nfs_server * server;
973 const struct iattr * attrs;
974 const struct nfs_fh * dir_fh;
975 const u32 * bitmask;
976 const struct nfs4_label *label;
977 umode_t umask;
978 };
979
980 struct nfs4_create_res {
981 struct nfs4_sequence_res seq_res;
982 const struct nfs_server * server;
983 struct nfs_fh * fh;
984 struct nfs_fattr * fattr;
985 struct nfs4_label *label;
986 struct nfs4_change_info dir_cinfo;
987 };
988
989 struct nfs4_fsinfo_arg {
990 struct nfs4_sequence_args seq_args;
991 const struct nfs_fh * fh;
992 const u32 * bitmask;
993 };
994
995 struct nfs4_fsinfo_res {
996 struct nfs4_sequence_res seq_res;
997 struct nfs_fsinfo *fsinfo;
998 };
999
1000 struct nfs4_getattr_arg {
1001 struct nfs4_sequence_args seq_args;
1002 const struct nfs_fh * fh;
1003 const u32 * bitmask;
1004 };
1005
1006 struct nfs4_getattr_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 };
1012
1013 struct nfs4_link_arg {
1014 struct nfs4_sequence_args seq_args;
1015 const struct nfs_fh * fh;
1016 const struct nfs_fh * dir_fh;
1017 const struct qstr * name;
1018 const u32 * bitmask;
1019 };
1020
1021 struct nfs4_link_res {
1022 struct nfs4_sequence_res seq_res;
1023 const struct nfs_server * server;
1024 struct nfs_fattr * fattr;
1025 struct nfs4_label *label;
1026 struct nfs4_change_info cinfo;
1027 struct nfs_fattr * dir_attr;
1028 };
1029
1030 struct nfs4_lookup_arg {
1031 struct nfs4_sequence_args seq_args;
1032 const struct nfs_fh * dir_fh;
1033 const struct qstr * name;
1034 const u32 * bitmask;
1035 };
1036
1037 struct nfs4_lookup_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_lookupp_arg {
1046 struct nfs4_sequence_args seq_args;
1047 const struct nfs_fh *fh;
1048 const u32 *bitmask;
1049 };
1050
1051 struct nfs4_lookupp_res {
1052 struct nfs4_sequence_res seq_res;
1053 const struct nfs_server *server;
1054 struct nfs_fattr *fattr;
1055 struct nfs_fh *fh;
1056 struct nfs4_label *label;
1057 };
1058
1059 struct nfs4_lookup_root_arg {
1060 struct nfs4_sequence_args seq_args;
1061 const u32 * bitmask;
1062 };
1063
1064 struct nfs4_pathconf_arg {
1065 struct nfs4_sequence_args seq_args;
1066 const struct nfs_fh * fh;
1067 const u32 * bitmask;
1068 };
1069
1070 struct nfs4_pathconf_res {
1071 struct nfs4_sequence_res seq_res;
1072 struct nfs_pathconf *pathconf;
1073 };
1074
1075 struct nfs4_readdir_arg {
1076 struct nfs4_sequence_args seq_args;
1077 const struct nfs_fh * fh;
1078 u64 cookie;
1079 nfs4_verifier verifier;
1080 u32 count;
1081 struct page ** pages; /* zero-copy data */
1082 unsigned int pgbase; /* zero-copy data */
1083 const u32 * bitmask;
1084 bool plus;
1085 };
1086
1087 struct nfs4_readdir_res {
1088 struct nfs4_sequence_res seq_res;
1089 nfs4_verifier verifier;
1090 unsigned int pgbase;
1091 };
1092
1093 struct nfs4_readlink {
1094 struct nfs4_sequence_args seq_args;
1095 const struct nfs_fh * fh;
1096 unsigned int pgbase;
1097 unsigned int pglen; /* zero-copy data */
1098 struct page ** pages; /* zero-copy data */
1099 };
1100
1101 struct nfs4_readlink_res {
1102 struct nfs4_sequence_res seq_res;
1103 };
1104
1105 struct nfs4_setclientid {
1106 const nfs4_verifier * sc_verifier;
1107 u32 sc_prog;
1108 unsigned int sc_netid_len;
1109 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
1110 unsigned int sc_uaddr_len;
1111 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1112 struct nfs_client *sc_clnt;
1113 struct rpc_cred *sc_cred;
1114 };
1115
1116 struct nfs4_setclientid_res {
1117 u64 clientid;
1118 nfs4_verifier confirm;
1119 };
1120
1121 struct nfs4_statfs_arg {
1122 struct nfs4_sequence_args seq_args;
1123 const struct nfs_fh * fh;
1124 const u32 * bitmask;
1125 };
1126
1127 struct nfs4_statfs_res {
1128 struct nfs4_sequence_res seq_res;
1129 struct nfs_fsstat *fsstat;
1130 };
1131
1132 struct nfs4_server_caps_arg {
1133 struct nfs4_sequence_args seq_args;
1134 struct nfs_fh *fhandle;
1135 const u32 * bitmask;
1136 };
1137
1138 struct nfs4_server_caps_res {
1139 struct nfs4_sequence_res seq_res;
1140 u32 attr_bitmask[3];
1141 u32 exclcreat_bitmask[3];
1142 u32 acl_bitmask;
1143 u32 has_links;
1144 u32 has_symlinks;
1145 u32 fh_expire_type;
1146 };
1147
1148 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1149 struct nfs4_pathname {
1150 unsigned int ncomponents;
1151 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1152 };
1153
1154 #define NFS4_FS_LOCATION_MAXSERVERS 10
1155 struct nfs4_fs_location {
1156 unsigned int nservers;
1157 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1158 struct nfs4_pathname rootpath;
1159 };
1160
1161 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1162 struct nfs4_fs_locations {
1163 struct nfs_fattr fattr;
1164 const struct nfs_server *server;
1165 struct nfs4_pathname fs_path;
1166 int nlocations;
1167 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1168 };
1169
1170 struct nfs4_fs_locations_arg {
1171 struct nfs4_sequence_args seq_args;
1172 const struct nfs_fh *dir_fh;
1173 const struct nfs_fh *fh;
1174 const struct qstr *name;
1175 struct page *page;
1176 const u32 *bitmask;
1177 clientid4 clientid;
1178 unsigned char migration:1, renew:1;
1179 };
1180
1181 struct nfs4_fs_locations_res {
1182 struct nfs4_sequence_res seq_res;
1183 struct nfs4_fs_locations *fs_locations;
1184 unsigned char migration:1, renew:1;
1185 };
1186
1187 struct nfs4_secinfo4 {
1188 u32 flavor;
1189 struct rpcsec_gss_info flavor_info;
1190 };
1191
1192 struct nfs4_secinfo_flavors {
1193 unsigned int num_flavors;
1194 struct nfs4_secinfo4 flavors[0];
1195 };
1196
1197 struct nfs4_secinfo_arg {
1198 struct nfs4_sequence_args seq_args;
1199 const struct nfs_fh *dir_fh;
1200 const struct qstr *name;
1201 };
1202
1203 struct nfs4_secinfo_res {
1204 struct nfs4_sequence_res seq_res;
1205 struct nfs4_secinfo_flavors *flavors;
1206 };
1207
1208 struct nfs4_fsid_present_arg {
1209 struct nfs4_sequence_args seq_args;
1210 const struct nfs_fh *fh;
1211 clientid4 clientid;
1212 unsigned char renew:1;
1213 };
1214
1215 struct nfs4_fsid_present_res {
1216 struct nfs4_sequence_res seq_res;
1217 struct nfs_fh *fh;
1218 unsigned char renew:1;
1219 };
1220
1221 #endif /* CONFIG_NFS_V4 */
1222
1223 struct nfstime4 {
1224 u64 seconds;
1225 u32 nseconds;
1226 };
1227
1228 #ifdef CONFIG_NFS_V4_1
1229
1230 struct pnfs_commit_bucket {
1231 struct list_head written;
1232 struct list_head committing;
1233 struct pnfs_layout_segment *wlseg;
1234 struct pnfs_layout_segment *clseg;
1235 struct nfs_writeverf direct_verf;
1236 };
1237
1238 struct pnfs_ds_commit_info {
1239 int nwritten;
1240 int ncommitting;
1241 int nbuckets;
1242 struct pnfs_commit_bucket *buckets;
1243 };
1244
1245 struct nfs41_state_protection {
1246 u32 how;
1247 struct nfs4_op_map enforce;
1248 struct nfs4_op_map allow;
1249 };
1250
1251 struct nfs41_exchange_id_args {
1252 struct nfs_client *client;
1253 nfs4_verifier verifier;
1254 u32 flags;
1255 struct nfs41_state_protection state_protect;
1256 };
1257
1258 struct nfs41_server_owner {
1259 uint64_t minor_id;
1260 uint32_t major_id_sz;
1261 char major_id[NFS4_OPAQUE_LIMIT];
1262 };
1263
1264 struct nfs41_server_scope {
1265 uint32_t server_scope_sz;
1266 char server_scope[NFS4_OPAQUE_LIMIT];
1267 };
1268
1269 struct nfs41_impl_id {
1270 char domain[NFS4_OPAQUE_LIMIT + 1];
1271 char name[NFS4_OPAQUE_LIMIT + 1];
1272 struct nfstime4 date;
1273 };
1274
1275 struct nfs41_bind_conn_to_session_args {
1276 struct nfs_client *client;
1277 struct nfs4_sessionid sessionid;
1278 u32 dir;
1279 bool use_conn_in_rdma_mode;
1280 };
1281
1282 struct nfs41_bind_conn_to_session_res {
1283 struct nfs4_sessionid sessionid;
1284 u32 dir;
1285 bool use_conn_in_rdma_mode;
1286 };
1287
1288 struct nfs41_exchange_id_res {
1289 u64 clientid;
1290 u32 seqid;
1291 u32 flags;
1292 struct nfs41_server_owner *server_owner;
1293 struct nfs41_server_scope *server_scope;
1294 struct nfs41_impl_id *impl_id;
1295 struct nfs41_state_protection state_protect;
1296 };
1297
1298 struct nfs41_create_session_args {
1299 struct nfs_client *client;
1300 u64 clientid;
1301 uint32_t seqid;
1302 uint32_t flags;
1303 uint32_t cb_program;
1304 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1305 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1306 };
1307
1308 struct nfs41_create_session_res {
1309 struct nfs4_sessionid sessionid;
1310 uint32_t seqid;
1311 uint32_t flags;
1312 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1313 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1314 };
1315
1316 struct nfs41_reclaim_complete_args {
1317 struct nfs4_sequence_args seq_args;
1318 /* In the future extend to include curr_fh for use with migration */
1319 unsigned char one_fs:1;
1320 };
1321
1322 struct nfs41_reclaim_complete_res {
1323 struct nfs4_sequence_res seq_res;
1324 };
1325
1326 #define SECINFO_STYLE_CURRENT_FH 0
1327 #define SECINFO_STYLE_PARENT 1
1328 struct nfs41_secinfo_no_name_args {
1329 struct nfs4_sequence_args seq_args;
1330 int style;
1331 };
1332
1333 struct nfs41_test_stateid_args {
1334 struct nfs4_sequence_args seq_args;
1335 nfs4_stateid *stateid;
1336 };
1337
1338 struct nfs41_test_stateid_res {
1339 struct nfs4_sequence_res seq_res;
1340 unsigned int status;
1341 };
1342
1343 struct nfs41_free_stateid_args {
1344 struct nfs4_sequence_args seq_args;
1345 nfs4_stateid stateid;
1346 };
1347
1348 struct nfs41_free_stateid_res {
1349 struct nfs4_sequence_res seq_res;
1350 unsigned int status;
1351 };
1352
1353 static inline void
1354 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1355 {
1356 kfree(cinfo->buckets);
1357 }
1358
1359 #else
1360
1361 struct pnfs_ds_commit_info {
1362 };
1363
1364 static inline void
1365 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1366 {
1367 }
1368
1369 #endif /* CONFIG_NFS_V4_1 */
1370
1371 #ifdef CONFIG_NFS_V4_2
1372 struct nfs42_falloc_args {
1373 struct nfs4_sequence_args seq_args;
1374
1375 struct nfs_fh *falloc_fh;
1376 nfs4_stateid falloc_stateid;
1377 u64 falloc_offset;
1378 u64 falloc_length;
1379 const u32 *falloc_bitmask;
1380 };
1381
1382 struct nfs42_falloc_res {
1383 struct nfs4_sequence_res seq_res;
1384 unsigned int status;
1385
1386 struct nfs_fattr *falloc_fattr;
1387 const struct nfs_server *falloc_server;
1388 };
1389
1390 struct nfs42_copy_args {
1391 struct nfs4_sequence_args seq_args;
1392
1393 struct nfs_fh *src_fh;
1394 nfs4_stateid src_stateid;
1395 u64 src_pos;
1396
1397 struct nfs_fh *dst_fh;
1398 nfs4_stateid dst_stateid;
1399 u64 dst_pos;
1400
1401 u64 count;
1402 bool sync;
1403 };
1404
1405 struct nfs42_write_res {
1406 nfs4_stateid stateid;
1407 u64 count;
1408 struct nfs_writeverf verifier;
1409 };
1410
1411 struct nfs42_copy_res {
1412 struct nfs4_sequence_res seq_res;
1413 struct nfs42_write_res write_res;
1414 bool consecutive;
1415 bool synchronous;
1416 struct nfs_commitres commit_res;
1417 };
1418
1419 struct nfs42_offload_status_args {
1420 struct nfs4_sequence_args osa_seq_args;
1421 struct nfs_fh *osa_src_fh;
1422 nfs4_stateid osa_stateid;
1423 };
1424
1425 struct nfs42_offload_status_res {
1426 struct nfs4_sequence_res osr_seq_res;
1427 uint64_t osr_count;
1428 int osr_status;
1429 };
1430
1431 struct nfs42_seek_args {
1432 struct nfs4_sequence_args seq_args;
1433
1434 struct nfs_fh *sa_fh;
1435 nfs4_stateid sa_stateid;
1436 u64 sa_offset;
1437 u32 sa_what;
1438 };
1439
1440 struct nfs42_seek_res {
1441 struct nfs4_sequence_res seq_res;
1442 unsigned int status;
1443
1444 u32 sr_eof;
1445 u64 sr_offset;
1446 };
1447 #endif
1448
1449 struct nfs_page;
1450
1451 #define NFS_PAGEVEC_SIZE (8U)
1452
1453 struct nfs_page_array {
1454 struct page **pagevec;
1455 unsigned int npages; /* Max length of pagevec */
1456 struct page *page_array[NFS_PAGEVEC_SIZE];
1457 };
1458
1459 /* used as flag bits in nfs_pgio_header */
1460 enum {
1461 NFS_IOHDR_ERROR = 0,
1462 NFS_IOHDR_EOF,
1463 NFS_IOHDR_REDO,
1464 NFS_IOHDR_STAT,
1465 NFS_IOHDR_RESEND_PNFS,
1466 NFS_IOHDR_RESEND_MDS,
1467 };
1468
1469 struct nfs_io_completion;
1470 struct nfs_pgio_header {
1471 struct inode *inode;
1472 struct rpc_cred *cred;
1473 struct list_head pages;
1474 struct nfs_page *req;
1475 struct nfs_writeverf verf; /* Used for writes */
1476 fmode_t rw_mode;
1477 struct pnfs_layout_segment *lseg;
1478 loff_t io_start;
1479 const struct rpc_call_ops *mds_ops;
1480 void (*release) (struct nfs_pgio_header *hdr);
1481 const struct nfs_pgio_completion_ops *completion_ops;
1482 const struct nfs_rw_ops *rw_ops;
1483 struct nfs_io_completion *io_completion;
1484 struct nfs_direct_req *dreq;
1485
1486 int pnfs_error;
1487 int error; /* merge with pnfs_error */
1488 unsigned int good_bytes; /* boundary of good data */
1489 unsigned long flags;
1490
1491 /*
1492 * rpc data
1493 */
1494 struct rpc_task task;
1495 struct nfs_fattr fattr;
1496 struct nfs_pgio_args args; /* argument struct */
1497 struct nfs_pgio_res res; /* result struct */
1498 unsigned long timestamp; /* For lease renewal */
1499 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1500 __u64 mds_offset; /* Filelayout dense stripe */
1501 struct nfs_page_array page_array;
1502 struct nfs_client *ds_clp; /* pNFS data server */
1503 int ds_commit_idx; /* ds index if ds_clp is set */
1504 int pgio_mirror_idx;/* mirror index in pgio layer */
1505 };
1506
1507 struct nfs_mds_commit_info {
1508 atomic_t rpcs_out;
1509 atomic_long_t ncommit;
1510 struct list_head list;
1511 };
1512
1513 struct nfs_commit_info;
1514 struct nfs_commit_data;
1515 struct nfs_inode;
1516 struct nfs_commit_completion_ops {
1517 void (*completion) (struct nfs_commit_data *data);
1518 void (*resched_write) (struct nfs_commit_info *, struct nfs_page *);
1519 };
1520
1521 struct nfs_commit_info {
1522 struct inode *inode; /* Needed for inode->i_lock */
1523 struct nfs_mds_commit_info *mds;
1524 struct pnfs_ds_commit_info *ds;
1525 struct nfs_direct_req *dreq; /* O_DIRECT request */
1526 const struct nfs_commit_completion_ops *completion_ops;
1527 };
1528
1529 struct nfs_commit_data {
1530 struct rpc_task task;
1531 struct inode *inode;
1532 struct rpc_cred *cred;
1533 struct nfs_fattr fattr;
1534 struct nfs_writeverf verf;
1535 struct list_head pages; /* Coalesced requests we wish to flush */
1536 struct list_head list; /* lists of struct nfs_write_data */
1537 struct nfs_direct_req *dreq; /* O_DIRECT request */
1538 struct nfs_commitargs args; /* argument struct */
1539 struct nfs_commitres res; /* result struct */
1540 struct nfs_open_context *context;
1541 struct pnfs_layout_segment *lseg;
1542 struct nfs_client *ds_clp; /* pNFS data server */
1543 int ds_commit_index;
1544 loff_t lwb;
1545 const struct rpc_call_ops *mds_ops;
1546 const struct nfs_commit_completion_ops *completion_ops;
1547 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1548 unsigned long flags;
1549 };
1550
1551 struct nfs_pgio_completion_ops {
1552 void (*error_cleanup)(struct list_head *head);
1553 void (*init_hdr)(struct nfs_pgio_header *hdr);
1554 void (*completion)(struct nfs_pgio_header *hdr);
1555 void (*reschedule_io)(struct nfs_pgio_header *hdr);
1556 };
1557
1558 struct nfs_unlinkdata {
1559 struct nfs_removeargs args;
1560 struct nfs_removeres res;
1561 struct dentry *dentry;
1562 wait_queue_head_t wq;
1563 struct rpc_cred *cred;
1564 struct nfs_fattr dir_attr;
1565 long timeout;
1566 };
1567
1568 struct nfs_renamedata {
1569 struct nfs_renameargs args;
1570 struct nfs_renameres res;
1571 struct rpc_cred *cred;
1572 struct inode *old_dir;
1573 struct dentry *old_dentry;
1574 struct nfs_fattr old_fattr;
1575 struct inode *new_dir;
1576 struct dentry *new_dentry;
1577 struct nfs_fattr new_fattr;
1578 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1579 long timeout;
1580 bool cancelled;
1581 };
1582
1583 struct nfs_access_entry;
1584 struct nfs_client;
1585 struct rpc_timeout;
1586 struct nfs_subversion;
1587 struct nfs_mount_info;
1588 struct nfs_client_initdata;
1589 struct nfs_pageio_descriptor;
1590
1591 /*
1592 * RPC procedure vector for NFSv2/NFSv3 demuxing
1593 */
1594 struct nfs_rpc_ops {
1595 u32 version; /* Protocol version */
1596 const struct dentry_operations *dentry_ops;
1597 const struct inode_operations *dir_inode_ops;
1598 const struct inode_operations *file_inode_ops;
1599 const struct file_operations *file_ops;
1600 const struct nlmclnt_operations *nlmclnt_ops;
1601
1602 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1603 struct nfs_fsinfo *);
1604 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1605 struct nfs_fh *, struct nfs_fattr *);
1606 struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1607 struct nfs_subversion *);
1608 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1609 struct nfs_fattr *, struct nfs4_label *,
1610 struct inode *);
1611 int (*setattr) (struct dentry *, struct nfs_fattr *,
1612 struct iattr *);
1613 int (*lookup) (struct inode *, const struct qstr *,
1614 struct nfs_fh *, struct nfs_fattr *,
1615 struct nfs4_label *);
1616 int (*lookupp) (struct inode *, struct nfs_fh *,
1617 struct nfs_fattr *, struct nfs4_label *);
1618 int (*access) (struct inode *, struct nfs_access_entry *);
1619 int (*readlink)(struct inode *, struct page *, unsigned int,
1620 unsigned int);
1621 int (*create) (struct inode *, struct dentry *,
1622 struct iattr *, int);
1623 int (*remove) (struct inode *, struct dentry *);
1624 void (*unlink_setup) (struct rpc_message *, struct dentry *, struct inode *);
1625 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1626 int (*unlink_done) (struct rpc_task *, struct inode *);
1627 void (*rename_setup) (struct rpc_message *msg,
1628 struct dentry *old_dentry,
1629 struct dentry *new_dentry);
1630 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1631 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1632 int (*link) (struct inode *, struct inode *, const struct qstr *);
1633 int (*symlink) (struct inode *, struct dentry *, struct page *,
1634 unsigned int, struct iattr *);
1635 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1636 int (*rmdir) (struct inode *, const struct qstr *);
1637 int (*readdir) (struct dentry *, struct rpc_cred *,
1638 u64, struct page **, unsigned int, bool);
1639 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1640 dev_t);
1641 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1642 struct nfs_fsstat *);
1643 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1644 struct nfs_fsinfo *);
1645 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1646 struct nfs_pathconf *);
1647 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1648 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool);
1649 int (*pgio_rpc_prepare)(struct rpc_task *,
1650 struct nfs_pgio_header *);
1651 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1652 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1653 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *,
1654 struct rpc_clnt **);
1655 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1656 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *,
1657 struct rpc_clnt **);
1658 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1659 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1660 int (*lock)(struct file *, int, struct file_lock *);
1661 int (*lock_check_bounds)(const struct file_lock *);
1662 void (*clear_acl_cache)(struct inode *);
1663 void (*close_context)(struct nfs_open_context *ctx, int);
1664 struct inode * (*open_context) (struct inode *dir,
1665 struct nfs_open_context *ctx,
1666 int open_flags,
1667 struct iattr *iattr,
1668 int *);
1669 int (*have_delegation)(struct inode *, fmode_t);
1670 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1671 struct nfs_client *(*init_client) (struct nfs_client *,
1672 const struct nfs_client_initdata *);
1673 void (*free_client) (struct nfs_client *);
1674 struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1675 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1676 struct nfs_fattr *, rpc_authflavor_t);
1677 };
1678
1679 /*
1680 * NFS_CALL(getattr, inode, (fattr));
1681 * into
1682 * NFS_PROTO(inode)->getattr(fattr);
1683 */
1684 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1685
1686 /*
1687 * Function vectors etc. for the NFS client
1688 */
1689 extern const struct nfs_rpc_ops nfs_v2_clientops;
1690 extern const struct nfs_rpc_ops nfs_v3_clientops;
1691 extern const struct nfs_rpc_ops nfs_v4_clientops;
1692 extern const struct rpc_version nfs_version2;
1693 extern const struct rpc_version nfs_version3;
1694 extern const struct rpc_version nfs_version4;
1695
1696 extern const struct rpc_version nfsacl_version3;
1697 extern const struct rpc_program nfsacl_program;
1698
1699 #endif
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