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