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 #define NFS_BITMASK_SZ 3
19
20 struct nfs4_string {
21 unsigned int len;
22 char *data;
23 };
24
25 struct nfs_fsid {
26 uint64_t major;
27 uint64_t minor;
28 };
29
30 /*
31 * Helper for checking equality between 2 fsids.
32 */
nfs_fsid_equal(const struct nfs_fsid * a,const struct nfs_fsid * b)33 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
34 {
35 return a->major == b->major && a->minor == b->minor;
36 }
37
38 struct nfs4_threshold {
39 __u32 bm;
40 __u32 l_type;
41 __u64 rd_sz;
42 __u64 wr_sz;
43 __u64 rd_io_sz;
44 __u64 wr_io_sz;
45 };
46
47 struct nfs_fattr {
48 unsigned int valid; /* which fields are valid */
49 umode_t mode;
50 __u32 nlink;
51 kuid_t uid;
52 kgid_t gid;
53 dev_t rdev;
54 __u64 size;
55 union {
56 struct {
57 __u32 blocksize;
58 __u32 blocks;
59 } nfs2;
60 struct {
61 __u64 used;
62 } nfs3;
63 } du;
64 struct nfs_fsid fsid;
65 __u64 fileid;
66 __u64 mounted_on_fileid;
67 struct timespec64 atime;
68 struct timespec64 mtime;
69 struct timespec64 ctime;
70 __u64 change_attr; /* NFSv4 change attribute */
71 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
72 __u64 pre_size; /* pre_op_attr.size */
73 struct timespec64 pre_mtime; /* pre_op_attr.mtime */
74 struct timespec64 pre_ctime; /* pre_op_attr.ctime */
75 unsigned long time_start;
76 unsigned long gencount;
77 struct nfs4_string *owner_name;
78 struct nfs4_string *group_name;
79 struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */
80 struct nfs4_label *label;
81 };
82
83 #define NFS_ATTR_FATTR_TYPE (1U << 0)
84 #define NFS_ATTR_FATTR_MODE (1U << 1)
85 #define NFS_ATTR_FATTR_NLINK (1U << 2)
86 #define NFS_ATTR_FATTR_OWNER (1U << 3)
87 #define NFS_ATTR_FATTR_GROUP (1U << 4)
88 #define NFS_ATTR_FATTR_RDEV (1U << 5)
89 #define NFS_ATTR_FATTR_SIZE (1U << 6)
90 #define NFS_ATTR_FATTR_PRESIZE (1U << 7)
91 #define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
92 #define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
93 #define NFS_ATTR_FATTR_FSID (1U << 10)
94 #define NFS_ATTR_FATTR_FILEID (1U << 11)
95 #define NFS_ATTR_FATTR_ATIME (1U << 12)
96 #define NFS_ATTR_FATTR_MTIME (1U << 13)
97 #define NFS_ATTR_FATTR_CTIME (1U << 14)
98 #define NFS_ATTR_FATTR_PREMTIME (1U << 15)
99 #define NFS_ATTR_FATTR_PRECTIME (1U << 16)
100 #define NFS_ATTR_FATTR_CHANGE (1U << 17)
101 #define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
102 #define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19)
103 #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20)
104 #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21)
105 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
106 #define NFS_ATTR_FATTR_OWNER_NAME (1U << 23)
107 #define NFS_ATTR_FATTR_GROUP_NAME (1U << 24)
108 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
109
110 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
111 | NFS_ATTR_FATTR_MODE \
112 | NFS_ATTR_FATTR_NLINK \
113 | NFS_ATTR_FATTR_OWNER \
114 | NFS_ATTR_FATTR_GROUP \
115 | NFS_ATTR_FATTR_RDEV \
116 | NFS_ATTR_FATTR_SIZE \
117 | NFS_ATTR_FATTR_FSID \
118 | NFS_ATTR_FATTR_FILEID \
119 | NFS_ATTR_FATTR_ATIME \
120 | NFS_ATTR_FATTR_MTIME \
121 | NFS_ATTR_FATTR_CTIME \
122 | NFS_ATTR_FATTR_CHANGE)
123 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
124 | NFS_ATTR_FATTR_BLOCKS_USED)
125 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
126 | NFS_ATTR_FATTR_SPACE_USED)
127 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
128 | NFS_ATTR_FATTR_SPACE_USED \
129 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
130
131 /*
132 * Maximal number of supported layout drivers.
133 */
134 #define NFS_MAX_LAYOUT_TYPES 8
135
136 /*
137 * Info on the file system
138 */
139 struct nfs_fsinfo {
140 struct nfs_fattr *fattr; /* Post-op attributes */
141 __u32 rtmax; /* max. read transfer size */
142 __u32 rtpref; /* pref. read transfer size */
143 __u32 rtmult; /* reads should be multiple of this */
144 __u32 wtmax; /* max. write transfer size */
145 __u32 wtpref; /* pref. write transfer size */
146 __u32 wtmult; /* writes should be multiple of this */
147 __u32 dtpref; /* pref. readdir transfer size */
148 __u64 maxfilesize;
149 struct timespec64 time_delta; /* server time granularity */
150 __u32 lease_time; /* in seconds */
151 __u32 nlayouttypes; /* number of layouttypes */
152 __u32 layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */
153 __u32 blksize; /* preferred pnfs io block size */
154 __u32 clone_blksize; /* granularity of a CLONE operation */
155 enum nfs4_change_attr_type
156 change_attr_type; /* Info about change attr */
157 __u32 xattr_support; /* User xattrs supported */
158 };
159
160 struct nfs_fsstat {
161 struct nfs_fattr *fattr; /* Post-op attributes */
162 __u64 tbytes; /* total size in bytes */
163 __u64 fbytes; /* # of free bytes */
164 __u64 abytes; /* # of bytes available to user */
165 __u64 tfiles; /* # of files */
166 __u64 ffiles; /* # of free files */
167 __u64 afiles; /* # of files available to user */
168 };
169
170 struct nfs2_fsstat {
171 __u32 tsize; /* Server transfer size */
172 __u32 bsize; /* Filesystem block size */
173 __u32 blocks; /* No. of "bsize" blocks on filesystem */
174 __u32 bfree; /* No. of free "bsize" blocks */
175 __u32 bavail; /* No. of available "bsize" blocks */
176 };
177
178 struct nfs_pathconf {
179 struct nfs_fattr *fattr; /* Post-op attributes */
180 __u32 max_link; /* max # of hard links */
181 __u32 max_namelen; /* max name length */
182 };
183
184 struct nfs4_change_info {
185 u32 atomic;
186 u64 before;
187 u64 after;
188 };
189
190 struct nfs_seqid;
191
192 /* nfs41 sessions channel attributes */
193 struct nfs4_channel_attrs {
194 u32 max_rqst_sz;
195 u32 max_resp_sz;
196 u32 max_resp_sz_cached;
197 u32 max_ops;
198 u32 max_reqs;
199 };
200
201 struct nfs4_slot;
202 struct nfs4_sequence_args {
203 struct nfs4_slot *sa_slot;
204 u8 sa_cache_this : 1,
205 sa_privileged : 1;
206 };
207
208 struct nfs4_sequence_res {
209 struct nfs4_slot *sr_slot; /* slot used to send request */
210 unsigned long sr_timestamp;
211 int sr_status; /* sequence operation status */
212 u32 sr_status_flags;
213 u32 sr_highest_slotid;
214 u32 sr_target_highest_slotid;
215 };
216
217 struct nfs4_get_lease_time_args {
218 struct nfs4_sequence_args la_seq_args;
219 };
220
221 struct nfs4_get_lease_time_res {
222 struct nfs4_sequence_res lr_seq_res;
223 struct nfs_fsinfo *lr_fsinfo;
224 };
225
226 struct xdr_stream;
227 struct nfs4_xdr_opaque_data;
228
229 struct nfs4_xdr_opaque_ops {
230 void (*encode)(struct xdr_stream *, const void *args,
231 const struct nfs4_xdr_opaque_data *);
232 void (*free)(struct nfs4_xdr_opaque_data *);
233 };
234
235 struct nfs4_xdr_opaque_data {
236 const struct nfs4_xdr_opaque_ops *ops;
237 void *data;
238 };
239
240 #define PNFS_LAYOUT_MAXSIZE 4096
241
242 struct nfs4_layoutdriver_data {
243 struct page **pages;
244 __u32 pglen;
245 __u32 len;
246 };
247
248 struct pnfs_layout_range {
249 u32 iomode;
250 u64 offset;
251 u64 length;
252 };
253
254 struct nfs4_layoutget_args {
255 struct nfs4_sequence_args seq_args;
256 __u32 type;
257 struct pnfs_layout_range range;
258 __u64 minlength;
259 __u32 maxcount;
260 struct inode *inode;
261 struct nfs_open_context *ctx;
262 nfs4_stateid stateid;
263 struct nfs4_layoutdriver_data layout;
264 };
265
266 struct nfs4_layoutget_res {
267 struct nfs4_sequence_res seq_res;
268 int status;
269 __u32 return_on_close;
270 struct pnfs_layout_range range;
271 __u32 type;
272 nfs4_stateid stateid;
273 struct nfs4_layoutdriver_data *layoutp;
274 };
275
276 struct nfs4_layoutget {
277 struct nfs4_layoutget_args args;
278 struct nfs4_layoutget_res res;
279 const struct cred *cred;
280 struct pnfs_layout_hdr *lo;
281 gfp_t gfp_flags;
282 };
283
284 struct nfs4_getdeviceinfo_args {
285 struct nfs4_sequence_args seq_args;
286 struct pnfs_device *pdev;
287 __u32 notify_types;
288 };
289
290 struct nfs4_getdeviceinfo_res {
291 struct nfs4_sequence_res seq_res;
292 struct pnfs_device *pdev;
293 __u32 notification;
294 };
295
296 struct nfs4_layoutcommit_args {
297 struct nfs4_sequence_args seq_args;
298 nfs4_stateid stateid;
299 __u64 lastbytewritten;
300 struct inode *inode;
301 const u32 *bitmask;
302 size_t layoutupdate_len;
303 struct page *layoutupdate_page;
304 struct page **layoutupdate_pages;
305 __be32 *start_p;
306 };
307
308 struct nfs4_layoutcommit_res {
309 struct nfs4_sequence_res seq_res;
310 struct nfs_fattr *fattr;
311 const struct nfs_server *server;
312 int status;
313 };
314
315 struct nfs4_layoutcommit_data {
316 struct rpc_task task;
317 struct nfs_fattr fattr;
318 struct list_head lseg_list;
319 const struct cred *cred;
320 struct inode *inode;
321 struct nfs4_layoutcommit_args args;
322 struct nfs4_layoutcommit_res res;
323 };
324
325 struct nfs4_layoutreturn_args {
326 struct nfs4_sequence_args seq_args;
327 struct pnfs_layout_hdr *layout;
328 struct inode *inode;
329 struct pnfs_layout_range range;
330 nfs4_stateid stateid;
331 __u32 layout_type;
332 struct nfs4_xdr_opaque_data *ld_private;
333 };
334
335 struct nfs4_layoutreturn_res {
336 struct nfs4_sequence_res seq_res;
337 u32 lrs_present;
338 nfs4_stateid stateid;
339 };
340
341 struct nfs4_layoutreturn {
342 struct nfs4_layoutreturn_args args;
343 struct nfs4_layoutreturn_res res;
344 const struct cred *cred;
345 struct nfs_client *clp;
346 struct inode *inode;
347 int rpc_status;
348 struct nfs4_xdr_opaque_data ld_private;
349 };
350
351 #define PNFS_LAYOUTSTATS_MAXSIZE 256
352
353 struct nfs42_layoutstat_args;
354 struct nfs42_layoutstat_devinfo;
355 typedef void (*layoutstats_encode_t)(struct xdr_stream *,
356 struct nfs42_layoutstat_args *,
357 struct nfs42_layoutstat_devinfo *);
358
359 /* Per file per deviceid layoutstats */
360 struct nfs42_layoutstat_devinfo {
361 struct nfs4_deviceid dev_id;
362 __u64 offset;
363 __u64 length;
364 __u64 read_count;
365 __u64 read_bytes;
366 __u64 write_count;
367 __u64 write_bytes;
368 __u32 layout_type;
369 struct nfs4_xdr_opaque_data ld_private;
370 };
371
372 struct nfs42_layoutstat_args {
373 struct nfs4_sequence_args seq_args;
374 struct nfs_fh *fh;
375 struct inode *inode;
376 nfs4_stateid stateid;
377 int num_dev;
378 struct nfs42_layoutstat_devinfo *devinfo;
379 };
380
381 struct nfs42_layoutstat_res {
382 struct nfs4_sequence_res seq_res;
383 int num_dev;
384 int rpc_status;
385 };
386
387 struct nfs42_layoutstat_data {
388 struct inode *inode;
389 struct nfs42_layoutstat_args args;
390 struct nfs42_layoutstat_res res;
391 };
392
393 struct nfs42_device_error {
394 struct nfs4_deviceid dev_id;
395 int status;
396 enum nfs_opnum4 opnum;
397 };
398
399 struct nfs42_layout_error {
400 __u64 offset;
401 __u64 length;
402 nfs4_stateid stateid;
403 struct nfs42_device_error errors[1];
404 };
405
406 #define NFS42_LAYOUTERROR_MAX 5
407
408 struct nfs42_layouterror_args {
409 struct nfs4_sequence_args seq_args;
410 struct inode *inode;
411 unsigned int num_errors;
412 struct nfs42_layout_error errors[NFS42_LAYOUTERROR_MAX];
413 };
414
415 struct nfs42_layouterror_res {
416 struct nfs4_sequence_res seq_res;
417 unsigned int num_errors;
418 int rpc_status;
419 };
420
421 struct nfs42_layouterror_data {
422 struct nfs42_layouterror_args args;
423 struct nfs42_layouterror_res res;
424 struct inode *inode;
425 struct pnfs_layout_segment *lseg;
426 };
427
428 struct nfs42_clone_args {
429 struct nfs4_sequence_args seq_args;
430 struct nfs_fh *src_fh;
431 struct nfs_fh *dst_fh;
432 nfs4_stateid src_stateid;
433 nfs4_stateid dst_stateid;
434 __u64 src_offset;
435 __u64 dst_offset;
436 __u64 count;
437 const u32 *dst_bitmask;
438 };
439
440 struct nfs42_clone_res {
441 struct nfs4_sequence_res seq_res;
442 unsigned int rpc_status;
443 struct nfs_fattr *dst_fattr;
444 const struct nfs_server *server;
445 };
446
447 struct stateowner_id {
448 __u64 create_time;
449 __u32 uniquifier;
450 };
451
452 /*
453 * Arguments to the open call.
454 */
455 struct nfs_openargs {
456 struct nfs4_sequence_args seq_args;
457 const struct nfs_fh * fh;
458 struct nfs_seqid * seqid;
459 int open_flags;
460 fmode_t fmode;
461 u32 share_access;
462 u32 access;
463 __u64 clientid;
464 struct stateowner_id id;
465 union {
466 struct {
467 struct iattr * attrs; /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
468 nfs4_verifier verifier; /* EXCLUSIVE */
469 };
470 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
471 fmode_t delegation_type; /* CLAIM_PREVIOUS */
472 } u;
473 const struct qstr * name;
474 const struct nfs_server *server; /* Needed for ID mapping */
475 const u32 * bitmask;
476 const u32 * open_bitmap;
477 enum open_claim_type4 claim;
478 enum createmode4 createmode;
479 const struct nfs4_label *label;
480 umode_t umask;
481 struct nfs4_layoutget_args *lg_args;
482 };
483
484 struct nfs_openres {
485 struct nfs4_sequence_res seq_res;
486 nfs4_stateid stateid;
487 struct nfs_fh fh;
488 struct nfs4_change_info cinfo;
489 __u32 rflags;
490 struct nfs_fattr * f_attr;
491 struct nfs_seqid * seqid;
492 const struct nfs_server *server;
493 fmode_t delegation_type;
494 nfs4_stateid delegation;
495 unsigned long pagemod_limit;
496 __u32 do_recall;
497 __u32 attrset[NFS4_BITMAP_SIZE];
498 struct nfs4_string *owner;
499 struct nfs4_string *group_owner;
500 __u32 access_request;
501 __u32 access_supported;
502 __u32 access_result;
503 struct nfs4_layoutget_res *lg_res;
504 };
505
506 /*
507 * Arguments to the open_confirm call.
508 */
509 struct nfs_open_confirmargs {
510 struct nfs4_sequence_args seq_args;
511 const struct nfs_fh * fh;
512 nfs4_stateid * stateid;
513 struct nfs_seqid * seqid;
514 };
515
516 struct nfs_open_confirmres {
517 struct nfs4_sequence_res seq_res;
518 nfs4_stateid stateid;
519 struct nfs_seqid * seqid;
520 };
521
522 /*
523 * Arguments to the close call.
524 */
525 struct nfs_closeargs {
526 struct nfs4_sequence_args seq_args;
527 struct nfs_fh * fh;
528 nfs4_stateid stateid;
529 struct nfs_seqid * seqid;
530 fmode_t fmode;
531 u32 share_access;
532 const u32 * bitmask;
533 u32 bitmask_store[NFS_BITMASK_SZ];
534 struct nfs4_layoutreturn_args *lr_args;
535 };
536
537 struct nfs_closeres {
538 struct nfs4_sequence_res seq_res;
539 nfs4_stateid stateid;
540 struct nfs_fattr * fattr;
541 struct nfs_seqid * seqid;
542 const struct nfs_server *server;
543 struct nfs4_layoutreturn_res *lr_res;
544 int lr_ret;
545 };
546 /*
547 * * Arguments to the lock,lockt, and locku call.
548 * */
549 struct nfs_lowner {
550 __u64 clientid;
551 __u64 id;
552 dev_t s_dev;
553 };
554
555 struct nfs_lock_args {
556 struct nfs4_sequence_args seq_args;
557 struct nfs_fh * fh;
558 struct file_lock * fl;
559 struct nfs_seqid * lock_seqid;
560 nfs4_stateid lock_stateid;
561 struct nfs_seqid * open_seqid;
562 nfs4_stateid open_stateid;
563 struct nfs_lowner lock_owner;
564 unsigned char block : 1;
565 unsigned char reclaim : 1;
566 unsigned char new_lock : 1;
567 unsigned char new_lock_owner : 1;
568 };
569
570 struct nfs_lock_res {
571 struct nfs4_sequence_res seq_res;
572 nfs4_stateid stateid;
573 struct nfs_seqid * lock_seqid;
574 struct nfs_seqid * open_seqid;
575 };
576
577 struct nfs_locku_args {
578 struct nfs4_sequence_args seq_args;
579 struct nfs_fh * fh;
580 struct file_lock * fl;
581 struct nfs_seqid * seqid;
582 nfs4_stateid stateid;
583 };
584
585 struct nfs_locku_res {
586 struct nfs4_sequence_res seq_res;
587 nfs4_stateid stateid;
588 struct nfs_seqid * seqid;
589 };
590
591 struct nfs_lockt_args {
592 struct nfs4_sequence_args seq_args;
593 struct nfs_fh * fh;
594 struct file_lock * fl;
595 struct nfs_lowner lock_owner;
596 };
597
598 struct nfs_lockt_res {
599 struct nfs4_sequence_res seq_res;
600 struct file_lock * denied; /* LOCK, LOCKT failed */
601 };
602
603 struct nfs_release_lockowner_args {
604 struct nfs4_sequence_args seq_args;
605 struct nfs_lowner lock_owner;
606 };
607
608 struct nfs_release_lockowner_res {
609 struct nfs4_sequence_res seq_res;
610 };
611
612 struct nfs4_delegreturnargs {
613 struct nfs4_sequence_args seq_args;
614 const struct nfs_fh *fhandle;
615 const nfs4_stateid *stateid;
616 const u32 *bitmask;
617 u32 bitmask_store[NFS_BITMASK_SZ];
618 struct nfs4_layoutreturn_args *lr_args;
619 };
620
621 struct nfs4_delegreturnres {
622 struct nfs4_sequence_res seq_res;
623 struct nfs_fattr * fattr;
624 struct nfs_server *server;
625 struct nfs4_layoutreturn_res *lr_res;
626 int lr_ret;
627 };
628
629 /*
630 * Arguments to the write call.
631 */
632 struct nfs_write_verifier {
633 char data[8];
634 };
635
636 struct nfs_writeverf {
637 struct nfs_write_verifier verifier;
638 enum nfs3_stable_how committed;
639 };
640
641 /*
642 * Arguments shared by the read and write call.
643 */
644 struct nfs_pgio_args {
645 struct nfs4_sequence_args seq_args;
646 struct nfs_fh * fh;
647 struct nfs_open_context *context;
648 struct nfs_lock_context *lock_context;
649 nfs4_stateid stateid;
650 __u64 offset;
651 __u32 count;
652 unsigned int pgbase;
653 struct page ** pages;
654 union {
655 unsigned int replen; /* used by read */
656 struct {
657 const u32 * bitmask; /* used by write */
658 u32 bitmask_store[NFS_BITMASK_SZ]; /* used by write */
659 enum nfs3_stable_how stable; /* used by write */
660 };
661 };
662 };
663
664 struct nfs_pgio_res {
665 struct nfs4_sequence_res seq_res;
666 struct nfs_fattr * fattr;
667 __u64 count;
668 __u32 op_status;
669 union {
670 struct {
671 unsigned int replen; /* used by read */
672 int eof; /* used by read */
673 void * scratch; /* used by read */
674 };
675 struct {
676 struct nfs_writeverf * verf; /* used by write */
677 const struct nfs_server *server; /* used by write */
678 };
679 };
680 };
681
682 /*
683 * Arguments to the commit call.
684 */
685 struct nfs_commitargs {
686 struct nfs4_sequence_args seq_args;
687 struct nfs_fh *fh;
688 __u64 offset;
689 __u32 count;
690 const u32 *bitmask;
691 };
692
693 struct nfs_commitres {
694 struct nfs4_sequence_res seq_res;
695 __u32 op_status;
696 struct nfs_fattr *fattr;
697 struct nfs_writeverf *verf;
698 const struct nfs_server *server;
699 };
700
701 /*
702 * Common arguments to the unlink call
703 */
704 struct nfs_removeargs {
705 struct nfs4_sequence_args seq_args;
706 const struct nfs_fh *fh;
707 struct qstr name;
708 };
709
710 struct nfs_removeres {
711 struct nfs4_sequence_res seq_res;
712 struct nfs_server *server;
713 struct nfs_fattr *dir_attr;
714 struct nfs4_change_info cinfo;
715 };
716
717 /*
718 * Common arguments to the rename call
719 */
720 struct nfs_renameargs {
721 struct nfs4_sequence_args seq_args;
722 const struct nfs_fh *old_dir;
723 const struct nfs_fh *new_dir;
724 const struct qstr *old_name;
725 const struct qstr *new_name;
726 };
727
728 struct nfs_renameres {
729 struct nfs4_sequence_res seq_res;
730 struct nfs_server *server;
731 struct nfs4_change_info old_cinfo;
732 struct nfs_fattr *old_fattr;
733 struct nfs4_change_info new_cinfo;
734 struct nfs_fattr *new_fattr;
735 };
736
737 /* parsed sec= options */
738 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
739 struct nfs_auth_info {
740 unsigned int flavor_len;
741 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
742 };
743
744 /*
745 * Argument struct for decode_entry function
746 */
747 struct nfs_entry {
748 __u64 ino;
749 __u64 cookie;
750 const char * name;
751 unsigned int len;
752 int eof;
753 struct nfs_fh * fh;
754 struct nfs_fattr * fattr;
755 unsigned char d_type;
756 struct nfs_server * server;
757 };
758
759 struct nfs_readdir_arg {
760 struct dentry *dentry;
761 const struct cred *cred;
762 __be32 *verf;
763 u64 cookie;
764 struct page **pages;
765 unsigned int page_len;
766 bool plus;
767 };
768
769 struct nfs_readdir_res {
770 __be32 *verf;
771 };
772
773 /*
774 * The following types are for NFSv2 only.
775 */
776 struct nfs_sattrargs {
777 struct nfs_fh * fh;
778 struct iattr * sattr;
779 };
780
781 struct nfs_diropargs {
782 struct nfs_fh * fh;
783 const char * name;
784 unsigned int len;
785 };
786
787 struct nfs_createargs {
788 struct nfs_fh * fh;
789 const char * name;
790 unsigned int len;
791 struct iattr * sattr;
792 };
793
794 struct nfs_setattrargs {
795 struct nfs4_sequence_args seq_args;
796 struct nfs_fh * fh;
797 nfs4_stateid stateid;
798 struct iattr * iap;
799 const struct nfs_server * server; /* Needed for name mapping */
800 const u32 * bitmask;
801 const struct nfs4_label *label;
802 };
803
804 enum nfs4_acl_type {
805 NFS4ACL_NONE = 0,
806 NFS4ACL_ACL,
807 NFS4ACL_DACL,
808 NFS4ACL_SACL,
809 };
810
811 struct nfs_setaclargs {
812 struct nfs4_sequence_args seq_args;
813 struct nfs_fh * fh;
814 enum nfs4_acl_type acl_type;
815 size_t acl_len;
816 struct page ** acl_pages;
817 };
818
819 struct nfs_setaclres {
820 struct nfs4_sequence_res seq_res;
821 };
822
823 struct nfs_getaclargs {
824 struct nfs4_sequence_args seq_args;
825 struct nfs_fh * fh;
826 enum nfs4_acl_type acl_type;
827 size_t acl_len;
828 struct page ** acl_pages;
829 };
830
831 /* getxattr ACL interface flags */
832 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
833 struct nfs_getaclres {
834 struct nfs4_sequence_res seq_res;
835 enum nfs4_acl_type acl_type;
836 size_t acl_len;
837 size_t acl_data_offset;
838 int acl_flags;
839 struct page * acl_scratch;
840 };
841
842 struct nfs_setattrres {
843 struct nfs4_sequence_res seq_res;
844 struct nfs_fattr * fattr;
845 const struct nfs_server * server;
846 };
847
848 struct nfs_linkargs {
849 struct nfs_fh * fromfh;
850 struct nfs_fh * tofh;
851 const char * toname;
852 unsigned int tolen;
853 };
854
855 struct nfs_symlinkargs {
856 struct nfs_fh * fromfh;
857 const char * fromname;
858 unsigned int fromlen;
859 struct page ** pages;
860 unsigned int pathlen;
861 struct iattr * sattr;
862 };
863
864 struct nfs_readdirargs {
865 struct nfs_fh * fh;
866 __u32 cookie;
867 unsigned int count;
868 struct page ** pages;
869 };
870
871 struct nfs3_getaclargs {
872 struct nfs_fh * fh;
873 int mask;
874 struct page ** pages;
875 };
876
877 struct nfs3_setaclargs {
878 struct inode * inode;
879 int mask;
880 struct posix_acl * acl_access;
881 struct posix_acl * acl_default;
882 size_t len;
883 unsigned int npages;
884 struct page ** pages;
885 };
886
887 struct nfs_diropok {
888 struct nfs_fh * fh;
889 struct nfs_fattr * fattr;
890 };
891
892 struct nfs_readlinkargs {
893 struct nfs_fh * fh;
894 unsigned int pgbase;
895 unsigned int pglen;
896 struct page ** pages;
897 };
898
899 struct nfs3_sattrargs {
900 struct nfs_fh * fh;
901 struct iattr * sattr;
902 unsigned int guard;
903 struct timespec64 guardtime;
904 };
905
906 struct nfs3_diropargs {
907 struct nfs_fh * fh;
908 const char * name;
909 unsigned int len;
910 };
911
912 struct nfs3_accessargs {
913 struct nfs_fh * fh;
914 __u32 access;
915 };
916
917 struct nfs3_createargs {
918 struct nfs_fh * fh;
919 const char * name;
920 unsigned int len;
921 struct iattr * sattr;
922 enum nfs3_createmode createmode;
923 __be32 verifier[2];
924 };
925
926 struct nfs3_mkdirargs {
927 struct nfs_fh * fh;
928 const char * name;
929 unsigned int len;
930 struct iattr * sattr;
931 };
932
933 struct nfs3_symlinkargs {
934 struct nfs_fh * fromfh;
935 const char * fromname;
936 unsigned int fromlen;
937 struct page ** pages;
938 unsigned int pathlen;
939 struct iattr * sattr;
940 };
941
942 struct nfs3_mknodargs {
943 struct nfs_fh * fh;
944 const char * name;
945 unsigned int len;
946 enum nfs3_ftype type;
947 struct iattr * sattr;
948 dev_t rdev;
949 };
950
951 struct nfs3_linkargs {
952 struct nfs_fh * fromfh;
953 struct nfs_fh * tofh;
954 const char * toname;
955 unsigned int tolen;
956 };
957
958 struct nfs3_readdirargs {
959 struct nfs_fh * fh;
960 __u64 cookie;
961 __be32 verf[2];
962 bool plus;
963 unsigned int count;
964 struct page ** pages;
965 };
966
967 struct nfs3_diropres {
968 struct nfs_fattr * dir_attr;
969 struct nfs_fh * fh;
970 struct nfs_fattr * fattr;
971 };
972
973 struct nfs3_accessres {
974 struct nfs_fattr * fattr;
975 __u32 access;
976 };
977
978 struct nfs3_readlinkargs {
979 struct nfs_fh * fh;
980 unsigned int pgbase;
981 unsigned int pglen;
982 struct page ** pages;
983 };
984
985 struct nfs3_linkres {
986 struct nfs_fattr * dir_attr;
987 struct nfs_fattr * fattr;
988 };
989
990 struct nfs3_readdirres {
991 struct nfs_fattr * dir_attr;
992 __be32 * verf;
993 bool plus;
994 };
995
996 struct nfs3_getaclres {
997 struct nfs_fattr * fattr;
998 int mask;
999 unsigned int acl_access_count;
1000 unsigned int acl_default_count;
1001 struct posix_acl * acl_access;
1002 struct posix_acl * acl_default;
1003 };
1004
1005 #if IS_ENABLED(CONFIG_NFS_V4)
1006
1007 typedef u64 clientid4;
1008
1009 struct nfs4_accessargs {
1010 struct nfs4_sequence_args seq_args;
1011 const struct nfs_fh * fh;
1012 const u32 * bitmask;
1013 u32 access;
1014 };
1015
1016 struct nfs4_accessres {
1017 struct nfs4_sequence_res seq_res;
1018 const struct nfs_server * server;
1019 struct nfs_fattr * fattr;
1020 u32 supported;
1021 u32 access;
1022 };
1023
1024 struct nfs4_create_arg {
1025 struct nfs4_sequence_args seq_args;
1026 u32 ftype;
1027 union {
1028 struct {
1029 struct page ** pages;
1030 unsigned int len;
1031 } symlink; /* NF4LNK */
1032 struct {
1033 u32 specdata1;
1034 u32 specdata2;
1035 } device; /* NF4BLK, NF4CHR */
1036 } u;
1037 const struct qstr * name;
1038 const struct nfs_server * server;
1039 const struct iattr * attrs;
1040 const struct nfs_fh * dir_fh;
1041 const u32 * bitmask;
1042 const struct nfs4_label *label;
1043 umode_t umask;
1044 };
1045
1046 struct nfs4_create_res {
1047 struct nfs4_sequence_res seq_res;
1048 const struct nfs_server * server;
1049 struct nfs_fh * fh;
1050 struct nfs_fattr * fattr;
1051 struct nfs4_change_info dir_cinfo;
1052 };
1053
1054 struct nfs4_fsinfo_arg {
1055 struct nfs4_sequence_args seq_args;
1056 const struct nfs_fh * fh;
1057 const u32 * bitmask;
1058 };
1059
1060 struct nfs4_fsinfo_res {
1061 struct nfs4_sequence_res seq_res;
1062 struct nfs_fsinfo *fsinfo;
1063 };
1064
1065 struct nfs4_getattr_arg {
1066 struct nfs4_sequence_args seq_args;
1067 const struct nfs_fh * fh;
1068 const u32 * bitmask;
1069 };
1070
1071 struct nfs4_getattr_res {
1072 struct nfs4_sequence_res seq_res;
1073 const struct nfs_server * server;
1074 struct nfs_fattr * fattr;
1075 };
1076
1077 struct nfs4_link_arg {
1078 struct nfs4_sequence_args seq_args;
1079 const struct nfs_fh * fh;
1080 const struct nfs_fh * dir_fh;
1081 const struct qstr * name;
1082 const u32 * bitmask;
1083 };
1084
1085 struct nfs4_link_res {
1086 struct nfs4_sequence_res seq_res;
1087 const struct nfs_server * server;
1088 struct nfs_fattr * fattr;
1089 struct nfs4_change_info cinfo;
1090 struct nfs_fattr * dir_attr;
1091 };
1092
1093 struct nfs4_lookup_arg {
1094 struct nfs4_sequence_args seq_args;
1095 const struct nfs_fh * dir_fh;
1096 const struct qstr * name;
1097 const u32 * bitmask;
1098 };
1099
1100 struct nfs4_lookup_res {
1101 struct nfs4_sequence_res seq_res;
1102 const struct nfs_server * server;
1103 struct nfs_fattr * fattr;
1104 struct nfs_fh * fh;
1105 };
1106
1107 struct nfs4_lookupp_arg {
1108 struct nfs4_sequence_args seq_args;
1109 const struct nfs_fh *fh;
1110 const u32 *bitmask;
1111 };
1112
1113 struct nfs4_lookupp_res {
1114 struct nfs4_sequence_res seq_res;
1115 const struct nfs_server *server;
1116 struct nfs_fattr *fattr;
1117 struct nfs_fh *fh;
1118 };
1119
1120 struct nfs4_lookup_root_arg {
1121 struct nfs4_sequence_args seq_args;
1122 const u32 * bitmask;
1123 };
1124
1125 struct nfs4_pathconf_arg {
1126 struct nfs4_sequence_args seq_args;
1127 const struct nfs_fh * fh;
1128 const u32 * bitmask;
1129 };
1130
1131 struct nfs4_pathconf_res {
1132 struct nfs4_sequence_res seq_res;
1133 struct nfs_pathconf *pathconf;
1134 };
1135
1136 struct nfs4_readdir_arg {
1137 struct nfs4_sequence_args seq_args;
1138 const struct nfs_fh * fh;
1139 u64 cookie;
1140 nfs4_verifier verifier;
1141 u32 count;
1142 struct page ** pages; /* zero-copy data */
1143 unsigned int pgbase; /* zero-copy data */
1144 const u32 * bitmask;
1145 bool plus;
1146 };
1147
1148 struct nfs4_readdir_res {
1149 struct nfs4_sequence_res seq_res;
1150 nfs4_verifier verifier;
1151 unsigned int pgbase;
1152 };
1153
1154 struct nfs4_readlink {
1155 struct nfs4_sequence_args seq_args;
1156 const struct nfs_fh * fh;
1157 unsigned int pgbase;
1158 unsigned int pglen; /* zero-copy data */
1159 struct page ** pages; /* zero-copy data */
1160 };
1161
1162 struct nfs4_readlink_res {
1163 struct nfs4_sequence_res seq_res;
1164 };
1165
1166 struct nfs4_setclientid {
1167 const nfs4_verifier * sc_verifier;
1168 u32 sc_prog;
1169 unsigned int sc_netid_len;
1170 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
1171 unsigned int sc_uaddr_len;
1172 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1173 struct nfs_client *sc_clnt;
1174 struct rpc_cred *sc_cred;
1175 };
1176
1177 struct nfs4_setclientid_res {
1178 u64 clientid;
1179 nfs4_verifier confirm;
1180 };
1181
1182 struct nfs4_statfs_arg {
1183 struct nfs4_sequence_args seq_args;
1184 const struct nfs_fh * fh;
1185 const u32 * bitmask;
1186 };
1187
1188 struct nfs4_statfs_res {
1189 struct nfs4_sequence_res seq_res;
1190 struct nfs_fsstat *fsstat;
1191 };
1192
1193 struct nfs4_server_caps_arg {
1194 struct nfs4_sequence_args seq_args;
1195 struct nfs_fh *fhandle;
1196 const u32 * bitmask;
1197 };
1198
1199 struct nfs4_server_caps_res {
1200 struct nfs4_sequence_res seq_res;
1201 u32 attr_bitmask[3];
1202 u32 exclcreat_bitmask[3];
1203 u32 acl_bitmask;
1204 u32 has_links;
1205 u32 has_symlinks;
1206 u32 fh_expire_type;
1207 u32 case_insensitive;
1208 u32 case_preserving;
1209 };
1210
1211 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1212 struct nfs4_pathname {
1213 unsigned int ncomponents;
1214 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1215 };
1216
1217 #define NFS4_FS_LOCATION_MAXSERVERS 10
1218 struct nfs4_fs_location {
1219 unsigned int nservers;
1220 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1221 struct nfs4_pathname rootpath;
1222 };
1223
1224 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1225 struct nfs4_fs_locations {
1226 struct nfs_fattr *fattr;
1227 const struct nfs_server *server;
1228 struct nfs4_pathname fs_path;
1229 int nlocations;
1230 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1231 };
1232
1233 struct nfs4_fs_locations_arg {
1234 struct nfs4_sequence_args seq_args;
1235 const struct nfs_fh *dir_fh;
1236 const struct nfs_fh *fh;
1237 const struct qstr *name;
1238 struct page *page;
1239 const u32 *bitmask;
1240 clientid4 clientid;
1241 unsigned char migration:1, renew:1;
1242 };
1243
1244 struct nfs4_fs_locations_res {
1245 struct nfs4_sequence_res seq_res;
1246 struct nfs4_fs_locations *fs_locations;
1247 unsigned char migration:1, renew:1;
1248 };
1249
1250 struct nfs4_secinfo4 {
1251 u32 flavor;
1252 struct rpcsec_gss_info flavor_info;
1253 };
1254
1255 struct nfs4_secinfo_flavors {
1256 unsigned int num_flavors;
1257 struct nfs4_secinfo4 flavors[];
1258 };
1259
1260 struct nfs4_secinfo_arg {
1261 struct nfs4_sequence_args seq_args;
1262 const struct nfs_fh *dir_fh;
1263 const struct qstr *name;
1264 };
1265
1266 struct nfs4_secinfo_res {
1267 struct nfs4_sequence_res seq_res;
1268 struct nfs4_secinfo_flavors *flavors;
1269 };
1270
1271 struct nfs4_fsid_present_arg {
1272 struct nfs4_sequence_args seq_args;
1273 const struct nfs_fh *fh;
1274 clientid4 clientid;
1275 unsigned char renew:1;
1276 };
1277
1278 struct nfs4_fsid_present_res {
1279 struct nfs4_sequence_res seq_res;
1280 struct nfs_fh *fh;
1281 unsigned char renew:1;
1282 };
1283
1284 #endif /* CONFIG_NFS_V4 */
1285
1286 struct nfstime4 {
1287 u64 seconds;
1288 u32 nseconds;
1289 };
1290
1291 #ifdef CONFIG_NFS_V4_1
1292
1293 struct pnfs_commit_bucket {
1294 struct list_head written;
1295 struct list_head committing;
1296 struct pnfs_layout_segment *lseg;
1297 struct nfs_writeverf direct_verf;
1298 };
1299
1300 struct pnfs_commit_array {
1301 struct list_head cinfo_list;
1302 struct list_head lseg_list;
1303 struct pnfs_layout_segment *lseg;
1304 struct rcu_head rcu;
1305 refcount_t refcount;
1306 unsigned int nbuckets;
1307 struct pnfs_commit_bucket buckets[];
1308 };
1309
1310 struct pnfs_ds_commit_info {
1311 struct list_head commits;
1312 unsigned int nwritten;
1313 unsigned int ncommitting;
1314 const struct pnfs_commit_ops *ops;
1315 };
1316
1317 struct nfs41_state_protection {
1318 u32 how;
1319 struct nfs4_op_map enforce;
1320 struct nfs4_op_map allow;
1321 };
1322
1323 struct nfs41_exchange_id_args {
1324 struct nfs_client *client;
1325 nfs4_verifier verifier;
1326 u32 flags;
1327 struct nfs41_state_protection state_protect;
1328 };
1329
1330 struct nfs41_server_owner {
1331 uint64_t minor_id;
1332 uint32_t major_id_sz;
1333 char major_id[NFS4_OPAQUE_LIMIT];
1334 };
1335
1336 struct nfs41_server_scope {
1337 uint32_t server_scope_sz;
1338 char server_scope[NFS4_OPAQUE_LIMIT];
1339 };
1340
1341 struct nfs41_impl_id {
1342 char domain[NFS4_OPAQUE_LIMIT + 1];
1343 char name[NFS4_OPAQUE_LIMIT + 1];
1344 struct nfstime4 date;
1345 };
1346
1347 #define MAX_BIND_CONN_TO_SESSION_RETRIES 3
1348 struct nfs41_bind_conn_to_session_args {
1349 struct nfs_client *client;
1350 struct nfs4_sessionid sessionid;
1351 u32 dir;
1352 bool use_conn_in_rdma_mode;
1353 int retries;
1354 };
1355
1356 struct nfs41_bind_conn_to_session_res {
1357 struct nfs4_sessionid sessionid;
1358 u32 dir;
1359 bool use_conn_in_rdma_mode;
1360 };
1361
1362 struct nfs41_exchange_id_res {
1363 u64 clientid;
1364 u32 seqid;
1365 u32 flags;
1366 struct nfs41_server_owner *server_owner;
1367 struct nfs41_server_scope *server_scope;
1368 struct nfs41_impl_id *impl_id;
1369 struct nfs41_state_protection state_protect;
1370 };
1371
1372 struct nfs41_create_session_args {
1373 struct nfs_client *client;
1374 u64 clientid;
1375 uint32_t seqid;
1376 uint32_t flags;
1377 uint32_t cb_program;
1378 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1379 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1380 };
1381
1382 struct nfs41_create_session_res {
1383 struct nfs4_sessionid sessionid;
1384 uint32_t seqid;
1385 uint32_t flags;
1386 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1387 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1388 };
1389
1390 struct nfs41_reclaim_complete_args {
1391 struct nfs4_sequence_args seq_args;
1392 /* In the future extend to include curr_fh for use with migration */
1393 unsigned char one_fs:1;
1394 };
1395
1396 struct nfs41_reclaim_complete_res {
1397 struct nfs4_sequence_res seq_res;
1398 };
1399
1400 #define SECINFO_STYLE_CURRENT_FH 0
1401 #define SECINFO_STYLE_PARENT 1
1402 struct nfs41_secinfo_no_name_args {
1403 struct nfs4_sequence_args seq_args;
1404 int style;
1405 };
1406
1407 struct nfs41_test_stateid_args {
1408 struct nfs4_sequence_args seq_args;
1409 nfs4_stateid *stateid;
1410 };
1411
1412 struct nfs41_test_stateid_res {
1413 struct nfs4_sequence_res seq_res;
1414 unsigned int status;
1415 };
1416
1417 struct nfs41_free_stateid_args {
1418 struct nfs4_sequence_args seq_args;
1419 nfs4_stateid stateid;
1420 };
1421
1422 struct nfs41_free_stateid_res {
1423 struct nfs4_sequence_res seq_res;
1424 unsigned int status;
1425 };
1426
1427 #else
1428
1429 struct pnfs_ds_commit_info {
1430 };
1431
1432 #endif /* CONFIG_NFS_V4_1 */
1433
1434 #ifdef CONFIG_NFS_V4_2
1435 struct nfs42_falloc_args {
1436 struct nfs4_sequence_args seq_args;
1437
1438 struct nfs_fh *falloc_fh;
1439 nfs4_stateid falloc_stateid;
1440 u64 falloc_offset;
1441 u64 falloc_length;
1442 const u32 *falloc_bitmask;
1443 };
1444
1445 struct nfs42_falloc_res {
1446 struct nfs4_sequence_res seq_res;
1447 unsigned int status;
1448
1449 struct nfs_fattr *falloc_fattr;
1450 const struct nfs_server *falloc_server;
1451 };
1452
1453 struct nfs42_copy_args {
1454 struct nfs4_sequence_args seq_args;
1455
1456 struct nfs_fh *src_fh;
1457 nfs4_stateid src_stateid;
1458 u64 src_pos;
1459
1460 struct nfs_fh *dst_fh;
1461 nfs4_stateid dst_stateid;
1462 u64 dst_pos;
1463
1464 u64 count;
1465 bool sync;
1466 struct nl4_server *cp_src;
1467 };
1468
1469 struct nfs42_write_res {
1470 nfs4_stateid stateid;
1471 u64 count;
1472 struct nfs_writeverf verifier;
1473 };
1474
1475 struct nfs42_copy_res {
1476 struct nfs4_sequence_res seq_res;
1477 struct nfs42_write_res write_res;
1478 bool consecutive;
1479 bool synchronous;
1480 struct nfs_commitres commit_res;
1481 };
1482
1483 struct nfs42_offload_status_args {
1484 struct nfs4_sequence_args osa_seq_args;
1485 struct nfs_fh *osa_src_fh;
1486 nfs4_stateid osa_stateid;
1487 };
1488
1489 struct nfs42_offload_status_res {
1490 struct nfs4_sequence_res osr_seq_res;
1491 uint64_t osr_count;
1492 int osr_status;
1493 };
1494
1495 struct nfs42_copy_notify_args {
1496 struct nfs4_sequence_args cna_seq_args;
1497
1498 struct nfs_fh *cna_src_fh;
1499 nfs4_stateid cna_src_stateid;
1500 struct nl4_server cna_dst;
1501 };
1502
1503 struct nfs42_copy_notify_res {
1504 struct nfs4_sequence_res cnr_seq_res;
1505
1506 struct nfstime4 cnr_lease_time;
1507 nfs4_stateid cnr_stateid;
1508 struct nl4_server cnr_src;
1509 };
1510
1511 struct nfs42_seek_args {
1512 struct nfs4_sequence_args seq_args;
1513
1514 struct nfs_fh *sa_fh;
1515 nfs4_stateid sa_stateid;
1516 u64 sa_offset;
1517 u32 sa_what;
1518 };
1519
1520 struct nfs42_seek_res {
1521 struct nfs4_sequence_res seq_res;
1522 unsigned int status;
1523
1524 u32 sr_eof;
1525 u64 sr_offset;
1526 };
1527
1528 struct nfs42_setxattrargs {
1529 struct nfs4_sequence_args seq_args;
1530 struct nfs_fh *fh;
1531 const u32 *bitmask;
1532 const char *xattr_name;
1533 u32 xattr_flags;
1534 size_t xattr_len;
1535 struct page **xattr_pages;
1536 };
1537
1538 struct nfs42_setxattrres {
1539 struct nfs4_sequence_res seq_res;
1540 struct nfs4_change_info cinfo;
1541 struct nfs_fattr *fattr;
1542 const struct nfs_server *server;
1543 };
1544
1545 struct nfs42_getxattrargs {
1546 struct nfs4_sequence_args seq_args;
1547 struct nfs_fh *fh;
1548 const char *xattr_name;
1549 size_t xattr_len;
1550 struct page **xattr_pages;
1551 };
1552
1553 struct nfs42_getxattrres {
1554 struct nfs4_sequence_res seq_res;
1555 size_t xattr_len;
1556 };
1557
1558 struct nfs42_listxattrsargs {
1559 struct nfs4_sequence_args seq_args;
1560 struct nfs_fh *fh;
1561 u32 count;
1562 u64 cookie;
1563 struct page **xattr_pages;
1564 };
1565
1566 struct nfs42_listxattrsres {
1567 struct nfs4_sequence_res seq_res;
1568 struct page *scratch;
1569 void *xattr_buf;
1570 size_t xattr_len;
1571 u64 cookie;
1572 bool eof;
1573 size_t copied;
1574 };
1575
1576 struct nfs42_removexattrargs {
1577 struct nfs4_sequence_args seq_args;
1578 struct nfs_fh *fh;
1579 const char *xattr_name;
1580 };
1581
1582 struct nfs42_removexattrres {
1583 struct nfs4_sequence_res seq_res;
1584 struct nfs4_change_info cinfo;
1585 };
1586
1587 #endif /* CONFIG_NFS_V4_2 */
1588
1589 struct nfs_page;
1590
1591 #define NFS_PAGEVEC_SIZE (8U)
1592
1593 struct nfs_page_array {
1594 struct page **pagevec;
1595 unsigned int npages; /* Max length of pagevec */
1596 struct page *page_array[NFS_PAGEVEC_SIZE];
1597 };
1598
1599 /* used as flag bits in nfs_pgio_header */
1600 enum {
1601 NFS_IOHDR_ERROR = 0,
1602 NFS_IOHDR_EOF,
1603 NFS_IOHDR_REDO,
1604 NFS_IOHDR_STAT,
1605 NFS_IOHDR_RESEND_PNFS,
1606 NFS_IOHDR_RESEND_MDS,
1607 NFS_IOHDR_UNSTABLE_WRITES,
1608 };
1609
1610 struct nfs_io_completion;
1611 struct nfs_pgio_header {
1612 struct inode *inode;
1613 const struct cred *cred;
1614 struct list_head pages;
1615 struct nfs_page *req;
1616 struct nfs_writeverf verf; /* Used for writes */
1617 fmode_t rw_mode;
1618 struct pnfs_layout_segment *lseg;
1619 loff_t io_start;
1620 const struct rpc_call_ops *mds_ops;
1621 void (*release) (struct nfs_pgio_header *hdr);
1622 const struct nfs_pgio_completion_ops *completion_ops;
1623 const struct nfs_rw_ops *rw_ops;
1624 struct nfs_io_completion *io_completion;
1625 struct nfs_direct_req *dreq;
1626 #ifdef CONFIG_NFS_FSCACHE
1627 void *netfs;
1628 #endif
1629
1630 int pnfs_error;
1631 int error; /* merge with pnfs_error */
1632 unsigned int good_bytes; /* boundary of good data */
1633 unsigned long flags;
1634
1635 /*
1636 * rpc data
1637 */
1638 struct rpc_task task;
1639 struct nfs_fattr fattr;
1640 struct nfs_pgio_args args; /* argument struct */
1641 struct nfs_pgio_res res; /* result struct */
1642 unsigned long timestamp; /* For lease renewal */
1643 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1644 __u64 mds_offset; /* Filelayout dense stripe */
1645 struct nfs_page_array page_array;
1646 struct nfs_client *ds_clp; /* pNFS data server */
1647 u32 ds_commit_idx; /* ds index if ds_clp is set */
1648 u32 pgio_mirror_idx;/* mirror index in pgio layer */
1649 };
1650
1651 struct nfs_mds_commit_info {
1652 atomic_t rpcs_out;
1653 atomic_long_t ncommit;
1654 struct list_head list;
1655 };
1656
1657 struct nfs_commit_info;
1658 struct nfs_commit_data;
1659 struct nfs_inode;
1660 struct nfs_commit_completion_ops {
1661 void (*completion) (struct nfs_commit_data *data);
1662 void (*resched_write) (struct nfs_commit_info *, struct nfs_page *);
1663 };
1664
1665 struct nfs_commit_info {
1666 struct inode *inode; /* Needed for inode->i_lock */
1667 struct nfs_mds_commit_info *mds;
1668 struct pnfs_ds_commit_info *ds;
1669 struct nfs_direct_req *dreq; /* O_DIRECT request */
1670 const struct nfs_commit_completion_ops *completion_ops;
1671 };
1672
1673 struct nfs_commit_data {
1674 struct rpc_task task;
1675 struct inode *inode;
1676 const struct cred *cred;
1677 struct nfs_fattr fattr;
1678 struct nfs_writeverf verf;
1679 struct list_head pages; /* Coalesced requests we wish to flush */
1680 struct list_head list; /* lists of struct nfs_write_data */
1681 struct nfs_direct_req *dreq; /* O_DIRECT request */
1682 struct nfs_commitargs args; /* argument struct */
1683 struct nfs_commitres res; /* result struct */
1684 struct nfs_open_context *context;
1685 struct pnfs_layout_segment *lseg;
1686 struct nfs_client *ds_clp; /* pNFS data server */
1687 int ds_commit_index;
1688 loff_t lwb;
1689 const struct rpc_call_ops *mds_ops;
1690 const struct nfs_commit_completion_ops *completion_ops;
1691 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1692 unsigned long flags;
1693 };
1694
1695 struct nfs_pgio_completion_ops {
1696 void (*error_cleanup)(struct list_head *head, int);
1697 void (*init_hdr)(struct nfs_pgio_header *hdr);
1698 void (*completion)(struct nfs_pgio_header *hdr);
1699 void (*reschedule_io)(struct nfs_pgio_header *hdr);
1700 };
1701
1702 struct nfs_unlinkdata {
1703 struct nfs_removeargs args;
1704 struct nfs_removeres res;
1705 struct dentry *dentry;
1706 wait_queue_head_t wq;
1707 const struct cred *cred;
1708 struct nfs_fattr dir_attr;
1709 long timeout;
1710 };
1711
1712 struct nfs_renamedata {
1713 struct nfs_renameargs args;
1714 struct nfs_renameres res;
1715 struct rpc_task task;
1716 const struct cred *cred;
1717 struct inode *old_dir;
1718 struct dentry *old_dentry;
1719 struct nfs_fattr old_fattr;
1720 struct inode *new_dir;
1721 struct dentry *new_dentry;
1722 struct nfs_fattr new_fattr;
1723 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1724 long timeout;
1725 bool cancelled;
1726 };
1727
1728 struct nfs_access_entry;
1729 struct nfs_client;
1730 struct rpc_timeout;
1731 struct nfs_subversion;
1732 struct nfs_mount_info;
1733 struct nfs_client_initdata;
1734 struct nfs_pageio_descriptor;
1735 struct fs_context;
1736
1737 /*
1738 * RPC procedure vector for NFSv2/NFSv3 demuxing
1739 */
1740 struct nfs_rpc_ops {
1741 u32 version; /* Protocol version */
1742 const struct dentry_operations *dentry_ops;
1743 const struct inode_operations *dir_inode_ops;
1744 const struct inode_operations *file_inode_ops;
1745 const struct file_operations *file_ops;
1746 const struct nlmclnt_operations *nlmclnt_ops;
1747
1748 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1749 struct nfs_fsinfo *);
1750 int (*submount) (struct fs_context *, struct nfs_server *);
1751 int (*try_get_tree) (struct fs_context *);
1752 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1753 struct nfs_fattr *, struct inode *);
1754 int (*setattr) (struct dentry *, struct nfs_fattr *,
1755 struct iattr *);
1756 int (*lookup) (struct inode *, struct dentry *,
1757 struct nfs_fh *, struct nfs_fattr *);
1758 int (*lookupp) (struct inode *, struct nfs_fh *,
1759 struct nfs_fattr *);
1760 int (*access) (struct inode *, struct nfs_access_entry *, const struct cred *);
1761 int (*readlink)(struct inode *, struct page *, unsigned int,
1762 unsigned int);
1763 int (*create) (struct inode *, struct dentry *,
1764 struct iattr *, int);
1765 int (*remove) (struct inode *, struct dentry *);
1766 void (*unlink_setup) (struct rpc_message *, struct dentry *, struct inode *);
1767 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1768 int (*unlink_done) (struct rpc_task *, struct inode *);
1769 void (*rename_setup) (struct rpc_message *msg,
1770 struct dentry *old_dentry,
1771 struct dentry *new_dentry);
1772 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1773 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1774 int (*link) (struct inode *, struct inode *, const struct qstr *);
1775 int (*symlink) (struct inode *, struct dentry *, struct page *,
1776 unsigned int, struct iattr *);
1777 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1778 int (*rmdir) (struct inode *, const struct qstr *);
1779 int (*readdir) (struct nfs_readdir_arg *, struct nfs_readdir_res *);
1780 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1781 dev_t);
1782 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1783 struct nfs_fsstat *);
1784 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1785 struct nfs_fsinfo *);
1786 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1787 struct nfs_pathconf *);
1788 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1789 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool);
1790 int (*pgio_rpc_prepare)(struct rpc_task *,
1791 struct nfs_pgio_header *);
1792 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1793 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1794 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *,
1795 struct rpc_clnt **);
1796 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1797 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *,
1798 struct rpc_clnt **);
1799 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1800 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1801 int (*lock)(struct file *, int, struct file_lock *);
1802 int (*lock_check_bounds)(const struct file_lock *);
1803 void (*clear_acl_cache)(struct inode *);
1804 void (*close_context)(struct nfs_open_context *ctx, int);
1805 struct inode * (*open_context) (struct inode *dir,
1806 struct nfs_open_context *ctx,
1807 int open_flags,
1808 struct iattr *iattr,
1809 int *);
1810 int (*have_delegation)(struct inode *, fmode_t);
1811 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1812 struct nfs_client *(*init_client) (struct nfs_client *,
1813 const struct nfs_client_initdata *);
1814 void (*free_client) (struct nfs_client *);
1815 struct nfs_server *(*create_server)(struct fs_context *);
1816 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1817 struct nfs_fattr *, rpc_authflavor_t);
1818 int (*discover_trunking)(struct nfs_server *, struct nfs_fh *);
1819 void (*enable_swap)(struct inode *inode);
1820 void (*disable_swap)(struct inode *inode);
1821 };
1822
1823 /*
1824 * NFS_CALL(getattr, inode, (fattr));
1825 * into
1826 * NFS_PROTO(inode)->getattr(fattr);
1827 */
1828 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1829
1830 /*
1831 * Function vectors etc. for the NFS client
1832 */
1833 extern const struct nfs_rpc_ops nfs_v2_clientops;
1834 extern const struct nfs_rpc_ops nfs_v3_clientops;
1835 extern const struct nfs_rpc_ops nfs_v4_clientops;
1836 extern const struct rpc_version nfs_version2;
1837 extern const struct rpc_version nfs_version3;
1838 extern const struct rpc_version nfs_version4;
1839
1840 extern const struct rpc_version nfsacl_version3;
1841 extern const struct rpc_program nfsacl_program;
1842
1843 #endif
1844