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 __u64 uniquifier;
450 };
451
452 struct nfs4_open_delegation {
453 __u32 open_delegation_type;
454 union {
455 struct {
456 fmode_t type;
457 __u32 do_recall;
458 nfs4_stateid stateid;
459 unsigned long pagemod_limit;
460 };
461 struct {
462 __u32 why_no_delegation;
463 __u32 will_notify;
464 };
465 };
466 };
467
468 /*
469 * Arguments to the open call.
470 */
471 struct nfs_openargs {
472 struct nfs4_sequence_args seq_args;
473 const struct nfs_fh * fh;
474 struct nfs_seqid * seqid;
475 int open_flags;
476 fmode_t fmode;
477 u32 share_access;
478 u32 access;
479 __u64 clientid;
480 struct stateowner_id id;
481 union {
482 struct {
483 struct iattr * attrs; /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
484 nfs4_verifier verifier; /* EXCLUSIVE */
485 };
486 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
487 __u32 delegation_type; /* CLAIM_PREVIOUS */
488 } u;
489 const struct qstr * name;
490 const struct nfs_server *server; /* Needed for ID mapping */
491 const u32 * bitmask;
492 const u32 * open_bitmap;
493 enum open_claim_type4 claim;
494 enum createmode4 createmode;
495 const struct nfs4_label *label;
496 umode_t umask;
497 struct nfs4_layoutget_args *lg_args;
498 };
499
500 struct nfs_openres {
501 struct nfs4_sequence_res seq_res;
502 nfs4_stateid stateid;
503 struct nfs_fh fh;
504 struct nfs4_change_info cinfo;
505 __u32 rflags;
506 struct nfs_fattr * f_attr;
507 struct nfs_seqid * seqid;
508 const struct nfs_server *server;
509 __u32 attrset[NFS4_BITMAP_SIZE];
510 struct nfs4_string *owner;
511 struct nfs4_string *group_owner;
512 struct nfs4_open_delegation delegation;
513 __u32 access_request;
514 __u32 access_supported;
515 __u32 access_result;
516 struct nfs4_layoutget_res *lg_res;
517 };
518
519 /*
520 * Arguments to the open_confirm call.
521 */
522 struct nfs_open_confirmargs {
523 struct nfs4_sequence_args seq_args;
524 const struct nfs_fh * fh;
525 nfs4_stateid * stateid;
526 struct nfs_seqid * seqid;
527 };
528
529 struct nfs_open_confirmres {
530 struct nfs4_sequence_res seq_res;
531 nfs4_stateid stateid;
532 struct nfs_seqid * seqid;
533 };
534
535 /*
536 * Arguments to the close call.
537 */
538 struct nfs_closeargs {
539 struct nfs4_sequence_args seq_args;
540 struct nfs_fh * fh;
541 nfs4_stateid stateid;
542 struct nfs_seqid * seqid;
543 fmode_t fmode;
544 u32 share_access;
545 const u32 * bitmask;
546 u32 bitmask_store[NFS_BITMASK_SZ];
547 struct nfs4_layoutreturn_args *lr_args;
548 };
549
550 struct nfs_closeres {
551 struct nfs4_sequence_res seq_res;
552 nfs4_stateid stateid;
553 struct nfs_fattr * fattr;
554 struct nfs_seqid * seqid;
555 const struct nfs_server *server;
556 struct nfs4_layoutreturn_res *lr_res;
557 int lr_ret;
558 };
559 /*
560 * * Arguments to the lock,lockt, and locku call.
561 * */
562 struct nfs_lowner {
563 __u64 clientid;
564 __u64 id;
565 dev_t s_dev;
566 };
567
568 struct nfs_lock_args {
569 struct nfs4_sequence_args seq_args;
570 struct nfs_fh * fh;
571 struct file_lock * fl;
572 struct nfs_seqid * lock_seqid;
573 nfs4_stateid lock_stateid;
574 struct nfs_seqid * open_seqid;
575 nfs4_stateid open_stateid;
576 struct nfs_lowner lock_owner;
577 unsigned char block : 1;
578 unsigned char reclaim : 1;
579 unsigned char new_lock : 1;
580 unsigned char new_lock_owner : 1;
581 };
582
583 struct nfs_lock_res {
584 struct nfs4_sequence_res seq_res;
585 nfs4_stateid stateid;
586 struct nfs_seqid * lock_seqid;
587 struct nfs_seqid * open_seqid;
588 };
589
590 struct nfs_locku_args {
591 struct nfs4_sequence_args seq_args;
592 struct nfs_fh * fh;
593 struct file_lock * fl;
594 struct nfs_seqid * seqid;
595 nfs4_stateid stateid;
596 };
597
598 struct nfs_locku_res {
599 struct nfs4_sequence_res seq_res;
600 nfs4_stateid stateid;
601 struct nfs_seqid * seqid;
602 };
603
604 struct nfs_lockt_args {
605 struct nfs4_sequence_args seq_args;
606 struct nfs_fh * fh;
607 struct file_lock * fl;
608 struct nfs_lowner lock_owner;
609 };
610
611 struct nfs_lockt_res {
612 struct nfs4_sequence_res seq_res;
613 struct file_lock * denied; /* LOCK, LOCKT failed */
614 };
615
616 struct nfs_release_lockowner_args {
617 struct nfs4_sequence_args seq_args;
618 struct nfs_lowner lock_owner;
619 };
620
621 struct nfs_release_lockowner_res {
622 struct nfs4_sequence_res seq_res;
623 };
624
625 struct nfs4_delegattr {
626 struct timespec64 atime;
627 struct timespec64 mtime;
628 bool atime_set;
629 bool mtime_set;
630 };
631
632 struct nfs4_delegreturnargs {
633 struct nfs4_sequence_args seq_args;
634 const struct nfs_fh *fhandle;
635 const nfs4_stateid *stateid;
636 const u32 *bitmask;
637 u32 bitmask_store[NFS_BITMASK_SZ];
638 struct nfs4_layoutreturn_args *lr_args;
639 struct nfs4_delegattr *sattr_args;
640 };
641
642 struct nfs4_delegreturnres {
643 struct nfs4_sequence_res seq_res;
644 struct nfs_fattr * fattr;
645 struct nfs_server *server;
646 struct nfs4_layoutreturn_res *lr_res;
647 int lr_ret;
648 bool sattr_res;
649 int sattr_ret;
650 };
651
652 /*
653 * Arguments to the write call.
654 */
655 struct nfs_write_verifier {
656 char data[8];
657 };
658
659 struct nfs_writeverf {
660 struct nfs_write_verifier verifier;
661 enum nfs3_stable_how committed;
662 };
663
664 /*
665 * Arguments shared by the read and write call.
666 */
667 struct nfs_pgio_args {
668 struct nfs4_sequence_args seq_args;
669 struct nfs_fh * fh;
670 struct nfs_open_context *context;
671 struct nfs_lock_context *lock_context;
672 nfs4_stateid stateid;
673 __u64 offset;
674 __u32 count;
675 unsigned int pgbase;
676 struct page ** pages;
677 union {
678 unsigned int replen; /* used by read */
679 struct {
680 const u32 * bitmask; /* used by write */
681 u32 bitmask_store[NFS_BITMASK_SZ]; /* used by write */
682 enum nfs3_stable_how stable; /* used by write */
683 };
684 };
685 };
686
687 struct nfs_pgio_res {
688 struct nfs4_sequence_res seq_res;
689 struct nfs_fattr * fattr;
690 __u64 count;
691 __u32 op_status;
692 union {
693 struct {
694 unsigned int replen; /* used by read */
695 int eof; /* used by read */
696 void * scratch; /* used by read */
697 };
698 struct {
699 struct nfs_writeverf * verf; /* used by write */
700 const struct nfs_server *server; /* used by write */
701 };
702 };
703 };
704
705 /*
706 * Arguments to the commit call.
707 */
708 struct nfs_commitargs {
709 struct nfs4_sequence_args seq_args;
710 struct nfs_fh *fh;
711 __u64 offset;
712 __u32 count;
713 const u32 *bitmask;
714 };
715
716 struct nfs_commitres {
717 struct nfs4_sequence_res seq_res;
718 __u32 op_status;
719 struct nfs_fattr *fattr;
720 struct nfs_writeverf *verf;
721 const struct nfs_server *server;
722 };
723
724 /*
725 * Common arguments to the unlink call
726 */
727 struct nfs_removeargs {
728 struct nfs4_sequence_args seq_args;
729 const struct nfs_fh *fh;
730 struct qstr name;
731 };
732
733 struct nfs_removeres {
734 struct nfs4_sequence_res seq_res;
735 struct nfs_server *server;
736 struct nfs_fattr *dir_attr;
737 struct nfs4_change_info cinfo;
738 };
739
740 /*
741 * Common arguments to the rename call
742 */
743 struct nfs_renameargs {
744 struct nfs4_sequence_args seq_args;
745 const struct nfs_fh *old_dir;
746 const struct nfs_fh *new_dir;
747 const struct qstr *old_name;
748 const struct qstr *new_name;
749 };
750
751 struct nfs_renameres {
752 struct nfs4_sequence_res seq_res;
753 struct nfs_server *server;
754 struct nfs4_change_info old_cinfo;
755 struct nfs_fattr *old_fattr;
756 struct nfs4_change_info new_cinfo;
757 struct nfs_fattr *new_fattr;
758 };
759
760 /* parsed sec= options */
761 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
762 struct nfs_auth_info {
763 unsigned int flavor_len;
764 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS];
765 };
766
767 /*
768 * Argument struct for decode_entry function
769 */
770 struct nfs_entry {
771 __u64 ino;
772 __u64 cookie;
773 const char * name;
774 unsigned int len;
775 int eof;
776 struct nfs_fh * fh;
777 struct nfs_fattr * fattr;
778 unsigned char d_type;
779 struct nfs_server * server;
780 };
781
782 struct nfs_readdir_arg {
783 struct dentry *dentry;
784 const struct cred *cred;
785 __be32 *verf;
786 u64 cookie;
787 struct page **pages;
788 unsigned int page_len;
789 bool plus;
790 };
791
792 struct nfs_readdir_res {
793 __be32 *verf;
794 };
795
796 /*
797 * The following types are for NFSv2 only.
798 */
799 struct nfs_sattrargs {
800 struct nfs_fh * fh;
801 struct iattr * sattr;
802 };
803
804 struct nfs_diropargs {
805 struct nfs_fh * fh;
806 const char * name;
807 unsigned int len;
808 };
809
810 struct nfs_createargs {
811 struct nfs_fh * fh;
812 const char * name;
813 unsigned int len;
814 struct iattr * sattr;
815 };
816
817 struct nfs_setattrargs {
818 struct nfs4_sequence_args seq_args;
819 struct nfs_fh * fh;
820 nfs4_stateid stateid;
821 struct iattr * iap;
822 const struct nfs_server * server; /* Needed for name mapping */
823 const u32 * bitmask;
824 const struct nfs4_label *label;
825 };
826
827 enum nfs4_acl_type {
828 NFS4ACL_NONE = 0,
829 NFS4ACL_ACL,
830 NFS4ACL_DACL,
831 NFS4ACL_SACL,
832 };
833
834 struct nfs_setaclargs {
835 struct nfs4_sequence_args seq_args;
836 struct nfs_fh * fh;
837 enum nfs4_acl_type acl_type;
838 size_t acl_len;
839 struct page ** acl_pages;
840 };
841
842 struct nfs_setaclres {
843 struct nfs4_sequence_res seq_res;
844 };
845
846 struct nfs_getaclargs {
847 struct nfs4_sequence_args seq_args;
848 struct nfs_fh * fh;
849 enum nfs4_acl_type acl_type;
850 size_t acl_len;
851 struct page ** acl_pages;
852 };
853
854 /* getxattr ACL interface flags */
855 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
856 struct nfs_getaclres {
857 struct nfs4_sequence_res seq_res;
858 enum nfs4_acl_type acl_type;
859 size_t acl_len;
860 size_t acl_data_offset;
861 int acl_flags;
862 struct page * acl_scratch;
863 };
864
865 struct nfs_setattrres {
866 struct nfs4_sequence_res seq_res;
867 struct nfs_fattr * fattr;
868 const struct nfs_server * server;
869 };
870
871 struct nfs_linkargs {
872 struct nfs_fh * fromfh;
873 struct nfs_fh * tofh;
874 const char * toname;
875 unsigned int tolen;
876 };
877
878 struct nfs_symlinkargs {
879 struct nfs_fh * fromfh;
880 const char * fromname;
881 unsigned int fromlen;
882 struct page ** pages;
883 unsigned int pathlen;
884 struct iattr * sattr;
885 };
886
887 struct nfs_readdirargs {
888 struct nfs_fh * fh;
889 __u32 cookie;
890 unsigned int count;
891 struct page ** pages;
892 };
893
894 struct nfs3_getaclargs {
895 struct nfs_fh * fh;
896 int mask;
897 struct page ** pages;
898 };
899
900 struct nfs3_setaclargs {
901 struct inode * inode;
902 int mask;
903 struct posix_acl * acl_access;
904 struct posix_acl * acl_default;
905 size_t len;
906 unsigned int npages;
907 struct page ** pages;
908 };
909
910 struct nfs_diropok {
911 struct nfs_fh * fh;
912 struct nfs_fattr * fattr;
913 };
914
915 struct nfs_readlinkargs {
916 struct nfs_fh * fh;
917 unsigned int pgbase;
918 unsigned int pglen;
919 struct page ** pages;
920 };
921
922 struct nfs3_sattrargs {
923 struct nfs_fh * fh;
924 struct iattr * sattr;
925 unsigned int guard;
926 struct timespec64 guardtime;
927 };
928
929 struct nfs3_diropargs {
930 struct nfs_fh * fh;
931 const char * name;
932 unsigned int len;
933 };
934
935 struct nfs3_accessargs {
936 struct nfs_fh * fh;
937 __u32 access;
938 };
939
940 struct nfs3_createargs {
941 struct nfs_fh * fh;
942 const char * name;
943 unsigned int len;
944 struct iattr * sattr;
945 enum nfs3_createmode createmode;
946 __be32 verifier[2];
947 };
948
949 struct nfs3_mkdirargs {
950 struct nfs_fh * fh;
951 const char * name;
952 unsigned int len;
953 struct iattr * sattr;
954 };
955
956 struct nfs3_symlinkargs {
957 struct nfs_fh * fromfh;
958 const char * fromname;
959 unsigned int fromlen;
960 struct page ** pages;
961 unsigned int pathlen;
962 struct iattr * sattr;
963 };
964
965 struct nfs3_mknodargs {
966 struct nfs_fh * fh;
967 const char * name;
968 unsigned int len;
969 enum nfs3_ftype type;
970 struct iattr * sattr;
971 dev_t rdev;
972 };
973
974 struct nfs3_linkargs {
975 struct nfs_fh * fromfh;
976 struct nfs_fh * tofh;
977 const char * toname;
978 unsigned int tolen;
979 };
980
981 struct nfs3_readdirargs {
982 struct nfs_fh * fh;
983 __u64 cookie;
984 __be32 verf[2];
985 bool plus;
986 unsigned int count;
987 struct page ** pages;
988 };
989
990 struct nfs3_diropres {
991 struct nfs_fattr * dir_attr;
992 struct nfs_fh * fh;
993 struct nfs_fattr * fattr;
994 };
995
996 struct nfs3_accessres {
997 struct nfs_fattr * fattr;
998 __u32 access;
999 };
1000
1001 struct nfs3_readlinkargs {
1002 struct nfs_fh * fh;
1003 unsigned int pgbase;
1004 unsigned int pglen;
1005 struct page ** pages;
1006 };
1007
1008 struct nfs3_linkres {
1009 struct nfs_fattr * dir_attr;
1010 struct nfs_fattr * fattr;
1011 };
1012
1013 struct nfs3_readdirres {
1014 struct nfs_fattr * dir_attr;
1015 __be32 * verf;
1016 bool plus;
1017 };
1018
1019 struct nfs3_getaclres {
1020 struct nfs_fattr * fattr;
1021 int mask;
1022 unsigned int acl_access_count;
1023 unsigned int acl_default_count;
1024 struct posix_acl * acl_access;
1025 struct posix_acl * acl_default;
1026 };
1027
1028 #if IS_ENABLED(CONFIG_NFS_V4)
1029
1030 typedef u64 clientid4;
1031
1032 struct nfs4_accessargs {
1033 struct nfs4_sequence_args seq_args;
1034 const struct nfs_fh * fh;
1035 const u32 * bitmask;
1036 u32 access;
1037 };
1038
1039 struct nfs4_accessres {
1040 struct nfs4_sequence_res seq_res;
1041 const struct nfs_server * server;
1042 struct nfs_fattr * fattr;
1043 u32 supported;
1044 u32 access;
1045 };
1046
1047 struct nfs4_create_arg {
1048 struct nfs4_sequence_args seq_args;
1049 u32 ftype;
1050 union {
1051 struct {
1052 struct page ** pages;
1053 unsigned int len;
1054 } symlink; /* NF4LNK */
1055 struct {
1056 u32 specdata1;
1057 u32 specdata2;
1058 } device; /* NF4BLK, NF4CHR */
1059 } u;
1060 const struct qstr * name;
1061 const struct nfs_server * server;
1062 const struct iattr * attrs;
1063 const struct nfs_fh * dir_fh;
1064 const u32 * bitmask;
1065 const struct nfs4_label *label;
1066 umode_t umask;
1067 };
1068
1069 struct nfs4_create_res {
1070 struct nfs4_sequence_res seq_res;
1071 const struct nfs_server * server;
1072 struct nfs_fh * fh;
1073 struct nfs_fattr * fattr;
1074 struct nfs4_change_info dir_cinfo;
1075 };
1076
1077 struct nfs4_fsinfo_arg {
1078 struct nfs4_sequence_args seq_args;
1079 const struct nfs_fh * fh;
1080 const u32 * bitmask;
1081 };
1082
1083 struct nfs4_fsinfo_res {
1084 struct nfs4_sequence_res seq_res;
1085 struct nfs_fsinfo *fsinfo;
1086 };
1087
1088 struct nfs4_getattr_arg {
1089 struct nfs4_sequence_args seq_args;
1090 const struct nfs_fh * fh;
1091 const u32 * bitmask;
1092 };
1093
1094 struct nfs4_getattr_res {
1095 struct nfs4_sequence_res seq_res;
1096 const struct nfs_server * server;
1097 struct nfs_fattr * fattr;
1098 };
1099
1100 struct nfs4_link_arg {
1101 struct nfs4_sequence_args seq_args;
1102 const struct nfs_fh * fh;
1103 const struct nfs_fh * dir_fh;
1104 const struct qstr * name;
1105 const u32 * bitmask;
1106 };
1107
1108 struct nfs4_link_res {
1109 struct nfs4_sequence_res seq_res;
1110 const struct nfs_server * server;
1111 struct nfs_fattr * fattr;
1112 struct nfs4_change_info cinfo;
1113 struct nfs_fattr * dir_attr;
1114 };
1115
1116 struct nfs4_lookup_arg {
1117 struct nfs4_sequence_args seq_args;
1118 const struct nfs_fh * dir_fh;
1119 const struct qstr * name;
1120 const u32 * bitmask;
1121 };
1122
1123 struct nfs4_lookup_res {
1124 struct nfs4_sequence_res seq_res;
1125 const struct nfs_server * server;
1126 struct nfs_fattr * fattr;
1127 struct nfs_fh * fh;
1128 };
1129
1130 struct nfs4_lookupp_arg {
1131 struct nfs4_sequence_args seq_args;
1132 const struct nfs_fh *fh;
1133 const u32 *bitmask;
1134 };
1135
1136 struct nfs4_lookupp_res {
1137 struct nfs4_sequence_res seq_res;
1138 const struct nfs_server *server;
1139 struct nfs_fattr *fattr;
1140 struct nfs_fh *fh;
1141 };
1142
1143 struct nfs4_lookup_root_arg {
1144 struct nfs4_sequence_args seq_args;
1145 const u32 * bitmask;
1146 };
1147
1148 struct nfs4_pathconf_arg {
1149 struct nfs4_sequence_args seq_args;
1150 const struct nfs_fh * fh;
1151 const u32 * bitmask;
1152 };
1153
1154 struct nfs4_pathconf_res {
1155 struct nfs4_sequence_res seq_res;
1156 struct nfs_pathconf *pathconf;
1157 };
1158
1159 struct nfs4_readdir_arg {
1160 struct nfs4_sequence_args seq_args;
1161 const struct nfs_fh * fh;
1162 u64 cookie;
1163 nfs4_verifier verifier;
1164 u32 count;
1165 struct page ** pages; /* zero-copy data */
1166 unsigned int pgbase; /* zero-copy data */
1167 const u32 * bitmask;
1168 bool plus;
1169 };
1170
1171 struct nfs4_readdir_res {
1172 struct nfs4_sequence_res seq_res;
1173 nfs4_verifier verifier;
1174 unsigned int pgbase;
1175 };
1176
1177 struct nfs4_readlink {
1178 struct nfs4_sequence_args seq_args;
1179 const struct nfs_fh * fh;
1180 unsigned int pgbase;
1181 unsigned int pglen; /* zero-copy data */
1182 struct page ** pages; /* zero-copy data */
1183 };
1184
1185 struct nfs4_readlink_res {
1186 struct nfs4_sequence_res seq_res;
1187 };
1188
1189 struct nfs4_setclientid {
1190 const nfs4_verifier * sc_verifier;
1191 u32 sc_prog;
1192 unsigned int sc_netid_len;
1193 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
1194 unsigned int sc_uaddr_len;
1195 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1196 struct nfs_client *sc_clnt;
1197 struct rpc_cred *sc_cred;
1198 };
1199
1200 struct nfs4_setclientid_res {
1201 u64 clientid;
1202 nfs4_verifier confirm;
1203 };
1204
1205 struct nfs4_statfs_arg {
1206 struct nfs4_sequence_args seq_args;
1207 const struct nfs_fh * fh;
1208 const u32 * bitmask;
1209 };
1210
1211 struct nfs4_statfs_res {
1212 struct nfs4_sequence_res seq_res;
1213 struct nfs_fsstat *fsstat;
1214 };
1215
1216 struct nfs4_open_caps {
1217 u32 oa_share_access[1];
1218 u32 oa_share_deny[1];
1219 u32 oa_share_access_want[1];
1220 u32 oa_open_claim[1];
1221 u32 oa_createmode[1];
1222 };
1223
1224 struct nfs4_server_caps_arg {
1225 struct nfs4_sequence_args seq_args;
1226 struct nfs_fh *fhandle;
1227 const u32 * bitmask;
1228 };
1229
1230 struct nfs4_server_caps_res {
1231 struct nfs4_sequence_res seq_res;
1232 u32 attr_bitmask[3];
1233 u32 exclcreat_bitmask[3];
1234 u32 acl_bitmask;
1235 u32 has_links;
1236 u32 has_symlinks;
1237 u32 fh_expire_type;
1238 u32 case_insensitive;
1239 u32 case_preserving;
1240 struct nfs4_open_caps open_caps;
1241 };
1242
1243 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1244 struct nfs4_pathname {
1245 unsigned int ncomponents;
1246 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1247 };
1248
1249 #define NFS4_FS_LOCATION_MAXSERVERS 10
1250 struct nfs4_fs_location {
1251 unsigned int nservers;
1252 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1253 struct nfs4_pathname rootpath;
1254 };
1255
1256 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1257 struct nfs4_fs_locations {
1258 struct nfs_fattr *fattr;
1259 const struct nfs_server *server;
1260 struct nfs4_pathname fs_path;
1261 int nlocations;
1262 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1263 };
1264
1265 struct nfs4_fs_locations_arg {
1266 struct nfs4_sequence_args seq_args;
1267 const struct nfs_fh *dir_fh;
1268 const struct nfs_fh *fh;
1269 const struct qstr *name;
1270 struct page *page;
1271 const u32 *bitmask;
1272 clientid4 clientid;
1273 unsigned char migration:1, renew:1;
1274 };
1275
1276 struct nfs4_fs_locations_res {
1277 struct nfs4_sequence_res seq_res;
1278 struct nfs4_fs_locations *fs_locations;
1279 unsigned char migration:1, renew:1;
1280 };
1281
1282 struct nfs4_secinfo4 {
1283 u32 flavor;
1284 struct rpcsec_gss_info flavor_info;
1285 };
1286
1287 struct nfs4_secinfo_flavors {
1288 unsigned int num_flavors;
1289 struct nfs4_secinfo4 flavors[];
1290 };
1291
1292 struct nfs4_secinfo_arg {
1293 struct nfs4_sequence_args seq_args;
1294 const struct nfs_fh *dir_fh;
1295 const struct qstr *name;
1296 };
1297
1298 struct nfs4_secinfo_res {
1299 struct nfs4_sequence_res seq_res;
1300 struct nfs4_secinfo_flavors *flavors;
1301 };
1302
1303 struct nfs4_fsid_present_arg {
1304 struct nfs4_sequence_args seq_args;
1305 const struct nfs_fh *fh;
1306 clientid4 clientid;
1307 unsigned char renew:1;
1308 };
1309
1310 struct nfs4_fsid_present_res {
1311 struct nfs4_sequence_res seq_res;
1312 struct nfs_fh *fh;
1313 unsigned char renew:1;
1314 };
1315
1316 #endif /* CONFIG_NFS_V4 */
1317
1318 struct nfstime4 {
1319 u64 seconds;
1320 u32 nseconds;
1321 };
1322
1323 #ifdef CONFIG_NFS_V4_1
1324
1325 struct pnfs_commit_bucket {
1326 struct list_head written;
1327 struct list_head committing;
1328 struct pnfs_layout_segment *lseg;
1329 struct nfs_writeverf direct_verf;
1330 };
1331
1332 struct pnfs_commit_array {
1333 struct list_head cinfo_list;
1334 struct list_head lseg_list;
1335 struct pnfs_layout_segment *lseg;
1336 struct rcu_head rcu;
1337 refcount_t refcount;
1338 unsigned int nbuckets;
1339 struct pnfs_commit_bucket buckets[] __counted_by(nbuckets);
1340 };
1341
1342 struct pnfs_ds_commit_info {
1343 struct list_head commits;
1344 unsigned int nwritten;
1345 unsigned int ncommitting;
1346 const struct pnfs_commit_ops *ops;
1347 };
1348
1349 struct nfs41_state_protection {
1350 u32 how;
1351 struct nfs4_op_map enforce;
1352 struct nfs4_op_map allow;
1353 };
1354
1355 struct nfs41_exchange_id_args {
1356 struct nfs_client *client;
1357 nfs4_verifier verifier;
1358 u32 flags;
1359 struct nfs41_state_protection state_protect;
1360 };
1361
1362 struct nfs41_server_owner {
1363 uint64_t minor_id;
1364 uint32_t major_id_sz;
1365 char major_id[NFS4_OPAQUE_LIMIT];
1366 };
1367
1368 struct nfs41_server_scope {
1369 uint32_t server_scope_sz;
1370 char server_scope[NFS4_OPAQUE_LIMIT];
1371 };
1372
1373 struct nfs41_impl_id {
1374 char domain[NFS4_OPAQUE_LIMIT + 1];
1375 char name[NFS4_OPAQUE_LIMIT + 1];
1376 struct nfstime4 date;
1377 };
1378
1379 #define MAX_BIND_CONN_TO_SESSION_RETRIES 3
1380 struct nfs41_bind_conn_to_session_args {
1381 struct nfs_client *client;
1382 struct nfs4_sessionid sessionid;
1383 u32 dir;
1384 bool use_conn_in_rdma_mode;
1385 int retries;
1386 };
1387
1388 struct nfs41_bind_conn_to_session_res {
1389 struct nfs4_sessionid sessionid;
1390 u32 dir;
1391 bool use_conn_in_rdma_mode;
1392 };
1393
1394 struct nfs41_exchange_id_res {
1395 u64 clientid;
1396 u32 seqid;
1397 u32 flags;
1398 struct nfs41_server_owner *server_owner;
1399 struct nfs41_server_scope *server_scope;
1400 struct nfs41_impl_id *impl_id;
1401 struct nfs41_state_protection state_protect;
1402 };
1403
1404 struct nfs41_create_session_args {
1405 struct nfs_client *client;
1406 u64 clientid;
1407 uint32_t seqid;
1408 uint32_t flags;
1409 uint32_t cb_program;
1410 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1411 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1412 };
1413
1414 struct nfs41_create_session_res {
1415 struct nfs4_sessionid sessionid;
1416 uint32_t seqid;
1417 uint32_t flags;
1418 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1419 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1420 };
1421
1422 struct nfs41_reclaim_complete_args {
1423 struct nfs4_sequence_args seq_args;
1424 /* In the future extend to include curr_fh for use with migration */
1425 unsigned char one_fs:1;
1426 };
1427
1428 struct nfs41_reclaim_complete_res {
1429 struct nfs4_sequence_res seq_res;
1430 };
1431
1432 #define SECINFO_STYLE_CURRENT_FH 0
1433 #define SECINFO_STYLE_PARENT 1
1434 struct nfs41_secinfo_no_name_args {
1435 struct nfs4_sequence_args seq_args;
1436 int style;
1437 };
1438
1439 struct nfs41_test_stateid_args {
1440 struct nfs4_sequence_args seq_args;
1441 nfs4_stateid stateid;
1442 };
1443
1444 struct nfs41_test_stateid_res {
1445 struct nfs4_sequence_res seq_res;
1446 unsigned int status;
1447 };
1448
1449 struct nfs41_free_stateid_args {
1450 struct nfs4_sequence_args seq_args;
1451 nfs4_stateid stateid;
1452 };
1453
1454 struct nfs41_free_stateid_res {
1455 struct nfs4_sequence_res seq_res;
1456 unsigned int status;
1457 };
1458
1459 #else
1460
1461 struct pnfs_ds_commit_info {
1462 };
1463
1464 #endif /* CONFIG_NFS_V4_1 */
1465
1466 #ifdef CONFIG_NFS_V4_2
1467 struct nfs42_falloc_args {
1468 struct nfs4_sequence_args seq_args;
1469
1470 struct nfs_fh *falloc_fh;
1471 nfs4_stateid falloc_stateid;
1472 u64 falloc_offset;
1473 u64 falloc_length;
1474 const u32 *falloc_bitmask;
1475 };
1476
1477 struct nfs42_falloc_res {
1478 struct nfs4_sequence_res seq_res;
1479 unsigned int status;
1480
1481 struct nfs_fattr *falloc_fattr;
1482 const struct nfs_server *falloc_server;
1483 };
1484
1485 struct nfs42_copy_args {
1486 struct nfs4_sequence_args seq_args;
1487
1488 struct nfs_fh *src_fh;
1489 nfs4_stateid src_stateid;
1490 u64 src_pos;
1491
1492 struct nfs_fh *dst_fh;
1493 nfs4_stateid dst_stateid;
1494 u64 dst_pos;
1495
1496 u64 count;
1497 bool sync;
1498 struct nl4_server *cp_src;
1499 };
1500
1501 struct nfs42_write_res {
1502 nfs4_stateid stateid;
1503 u64 count;
1504 struct nfs_writeverf verifier;
1505 };
1506
1507 struct nfs42_copy_res {
1508 struct nfs4_sequence_res seq_res;
1509 struct nfs42_write_res write_res;
1510 bool consecutive;
1511 bool synchronous;
1512 struct nfs_commitres commit_res;
1513 };
1514
1515 struct nfs42_offload_status_args {
1516 struct nfs4_sequence_args osa_seq_args;
1517 struct nfs_fh *osa_src_fh;
1518 nfs4_stateid osa_stateid;
1519 };
1520
1521 struct nfs42_offload_status_res {
1522 struct nfs4_sequence_res osr_seq_res;
1523 uint64_t osr_count;
1524 int osr_status;
1525 };
1526
1527 struct nfs42_copy_notify_args {
1528 struct nfs4_sequence_args cna_seq_args;
1529
1530 struct nfs_fh *cna_src_fh;
1531 nfs4_stateid cna_src_stateid;
1532 struct nl4_server cna_dst;
1533 };
1534
1535 struct nfs42_copy_notify_res {
1536 struct nfs4_sequence_res cnr_seq_res;
1537
1538 struct nfstime4 cnr_lease_time;
1539 nfs4_stateid cnr_stateid;
1540 struct nl4_server cnr_src;
1541 };
1542
1543 struct nfs42_seek_args {
1544 struct nfs4_sequence_args seq_args;
1545
1546 struct nfs_fh *sa_fh;
1547 nfs4_stateid sa_stateid;
1548 u64 sa_offset;
1549 u32 sa_what;
1550 };
1551
1552 struct nfs42_seek_res {
1553 struct nfs4_sequence_res seq_res;
1554 unsigned int status;
1555
1556 u32 sr_eof;
1557 u64 sr_offset;
1558 };
1559
1560 struct nfs42_setxattrargs {
1561 struct nfs4_sequence_args seq_args;
1562 struct nfs_fh *fh;
1563 const u32 *bitmask;
1564 const char *xattr_name;
1565 u32 xattr_flags;
1566 size_t xattr_len;
1567 struct page **xattr_pages;
1568 };
1569
1570 struct nfs42_setxattrres {
1571 struct nfs4_sequence_res seq_res;
1572 struct nfs4_change_info cinfo;
1573 struct nfs_fattr *fattr;
1574 const struct nfs_server *server;
1575 };
1576
1577 struct nfs42_getxattrargs {
1578 struct nfs4_sequence_args seq_args;
1579 struct nfs_fh *fh;
1580 const char *xattr_name;
1581 size_t xattr_len;
1582 struct page **xattr_pages;
1583 };
1584
1585 struct nfs42_getxattrres {
1586 struct nfs4_sequence_res seq_res;
1587 size_t xattr_len;
1588 };
1589
1590 struct nfs42_listxattrsargs {
1591 struct nfs4_sequence_args seq_args;
1592 struct nfs_fh *fh;
1593 u32 count;
1594 u64 cookie;
1595 struct page **xattr_pages;
1596 };
1597
1598 struct nfs42_listxattrsres {
1599 struct nfs4_sequence_res seq_res;
1600 struct page *scratch;
1601 void *xattr_buf;
1602 size_t xattr_len;
1603 u64 cookie;
1604 bool eof;
1605 size_t copied;
1606 };
1607
1608 struct nfs42_removexattrargs {
1609 struct nfs4_sequence_args seq_args;
1610 struct nfs_fh *fh;
1611 const char *xattr_name;
1612 };
1613
1614 struct nfs42_removexattrres {
1615 struct nfs4_sequence_res seq_res;
1616 struct nfs4_change_info cinfo;
1617 };
1618
1619 #endif /* CONFIG_NFS_V4_2 */
1620
1621 struct nfs_page;
1622
1623 #define NFS_PAGEVEC_SIZE (8U)
1624
1625 struct nfs_page_array {
1626 struct page **pagevec;
1627 unsigned int npages; /* Max length of pagevec */
1628 struct page *page_array[NFS_PAGEVEC_SIZE];
1629 };
1630
1631 /* used as flag bits in nfs_pgio_header */
1632 enum {
1633 NFS_IOHDR_ERROR = 0,
1634 NFS_IOHDR_EOF,
1635 NFS_IOHDR_REDO,
1636 NFS_IOHDR_STAT,
1637 NFS_IOHDR_RESEND_PNFS,
1638 NFS_IOHDR_RESEND_MDS,
1639 NFS_IOHDR_UNSTABLE_WRITES,
1640 };
1641
1642 struct nfs_io_completion;
1643 struct nfs_pgio_header {
1644 struct inode *inode;
1645 const struct cred *cred;
1646 struct list_head pages;
1647 struct nfs_page *req;
1648 struct nfs_writeverf verf; /* Used for writes */
1649 fmode_t rw_mode;
1650 struct pnfs_layout_segment *lseg;
1651 loff_t io_start;
1652 const struct rpc_call_ops *mds_ops;
1653 void (*release) (struct nfs_pgio_header *hdr);
1654 const struct nfs_pgio_completion_ops *completion_ops;
1655 const struct nfs_rw_ops *rw_ops;
1656 struct nfs_io_completion *io_completion;
1657 struct nfs_direct_req *dreq;
1658 #ifdef CONFIG_NFS_FSCACHE
1659 void *netfs;
1660 #endif
1661
1662 int pnfs_error;
1663 int error; /* merge with pnfs_error */
1664 unsigned int good_bytes; /* boundary of good data */
1665 unsigned long flags;
1666
1667 /*
1668 * rpc data
1669 */
1670 struct rpc_task task;
1671 struct nfs_fattr fattr;
1672 struct nfs_pgio_args args; /* argument struct */
1673 struct nfs_pgio_res res; /* result struct */
1674 unsigned long timestamp; /* For lease renewal */
1675 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1676 __u64 mds_offset; /* Filelayout dense stripe */
1677 struct nfs_page_array page_array;
1678 struct nfs_client *ds_clp; /* pNFS data server */
1679 u32 ds_commit_idx; /* ds index if ds_clp is set */
1680 u32 pgio_mirror_idx;/* mirror index in pgio layer */
1681 };
1682
1683 struct nfs_mds_commit_info {
1684 atomic_t rpcs_out;
1685 atomic_long_t ncommit;
1686 struct list_head list;
1687 };
1688
1689 struct nfs_commit_info;
1690 struct nfs_commit_data;
1691 struct nfs_inode;
1692 struct nfs_commit_completion_ops {
1693 void (*completion) (struct nfs_commit_data *data);
1694 void (*resched_write) (struct nfs_commit_info *, struct nfs_page *);
1695 };
1696
1697 struct nfs_commit_info {
1698 struct inode *inode; /* Needed for inode->i_lock */
1699 struct nfs_mds_commit_info *mds;
1700 struct pnfs_ds_commit_info *ds;
1701 struct nfs_direct_req *dreq; /* O_DIRECT request */
1702 const struct nfs_commit_completion_ops *completion_ops;
1703 };
1704
1705 struct nfs_commit_data {
1706 struct rpc_task task;
1707 struct inode *inode;
1708 const struct cred *cred;
1709 struct nfs_fattr fattr;
1710 struct nfs_writeverf verf;
1711 struct list_head pages; /* Coalesced requests we wish to flush */
1712 struct list_head list; /* lists of struct nfs_write_data */
1713 struct nfs_direct_req *dreq; /* O_DIRECT request */
1714 struct nfs_commitargs args; /* argument struct */
1715 struct nfs_commitres res; /* result struct */
1716 struct nfs_open_context *context;
1717 struct pnfs_layout_segment *lseg;
1718 struct nfs_client *ds_clp; /* pNFS data server */
1719 int ds_commit_index;
1720 loff_t lwb;
1721 const struct rpc_call_ops *mds_ops;
1722 const struct nfs_commit_completion_ops *completion_ops;
1723 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1724 unsigned long flags;
1725 };
1726
1727 struct nfs_pgio_completion_ops {
1728 void (*error_cleanup)(struct list_head *head, int);
1729 void (*init_hdr)(struct nfs_pgio_header *hdr);
1730 void (*completion)(struct nfs_pgio_header *hdr);
1731 void (*reschedule_io)(struct nfs_pgio_header *hdr);
1732 };
1733
1734 struct nfs_unlinkdata {
1735 struct nfs_removeargs args;
1736 struct nfs_removeres res;
1737 struct dentry *dentry;
1738 wait_queue_head_t wq;
1739 const struct cred *cred;
1740 struct nfs_fattr dir_attr;
1741 long timeout;
1742 };
1743
1744 struct nfs_renamedata {
1745 struct nfs_renameargs args;
1746 struct nfs_renameres res;
1747 struct rpc_task task;
1748 const struct cred *cred;
1749 struct inode *old_dir;
1750 struct dentry *old_dentry;
1751 struct nfs_fattr old_fattr;
1752 struct inode *new_dir;
1753 struct dentry *new_dentry;
1754 struct nfs_fattr new_fattr;
1755 void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1756 long timeout;
1757 bool cancelled;
1758 };
1759
1760 struct nfs_access_entry;
1761 struct nfs_client;
1762 struct rpc_timeout;
1763 struct nfs_subversion;
1764 struct nfs_mount_info;
1765 struct nfs_client_initdata;
1766 struct nfs_pageio_descriptor;
1767 struct fs_context;
1768
1769 /*
1770 * RPC procedure vector for NFSv2/NFSv3 demuxing
1771 */
1772 struct nfs_rpc_ops {
1773 u32 version; /* Protocol version */
1774 const struct dentry_operations *dentry_ops;
1775 const struct inode_operations *dir_inode_ops;
1776 const struct inode_operations *file_inode_ops;
1777 const struct file_operations *file_ops;
1778 const struct nlmclnt_operations *nlmclnt_ops;
1779
1780 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1781 struct nfs_fsinfo *);
1782 int (*submount) (struct fs_context *, struct nfs_server *);
1783 int (*try_get_tree) (struct fs_context *);
1784 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1785 struct nfs_fattr *, struct inode *);
1786 int (*setattr) (struct dentry *, struct nfs_fattr *,
1787 struct iattr *);
1788 int (*lookup) (struct inode *, struct dentry *,
1789 struct nfs_fh *, struct nfs_fattr *);
1790 int (*lookupp) (struct inode *, struct nfs_fh *,
1791 struct nfs_fattr *);
1792 int (*access) (struct inode *, struct nfs_access_entry *, const struct cred *);
1793 int (*readlink)(struct inode *, struct page *, unsigned int,
1794 unsigned int);
1795 int (*create) (struct inode *, struct dentry *,
1796 struct iattr *, int);
1797 int (*remove) (struct inode *, struct dentry *);
1798 void (*unlink_setup) (struct rpc_message *, struct dentry *, struct inode *);
1799 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1800 int (*unlink_done) (struct rpc_task *, struct inode *);
1801 void (*rename_setup) (struct rpc_message *msg,
1802 struct dentry *old_dentry,
1803 struct dentry *new_dentry);
1804 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1805 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1806 int (*link) (struct inode *, struct inode *, const struct qstr *);
1807 int (*symlink) (struct inode *, struct dentry *, struct folio *,
1808 unsigned int, struct iattr *);
1809 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1810 int (*rmdir) (struct inode *, const struct qstr *);
1811 int (*readdir) (struct nfs_readdir_arg *, struct nfs_readdir_res *);
1812 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1813 dev_t);
1814 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1815 struct nfs_fsstat *);
1816 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1817 struct nfs_fsinfo *);
1818 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1819 struct nfs_pathconf *);
1820 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1821 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool);
1822 int (*pgio_rpc_prepare)(struct rpc_task *,
1823 struct nfs_pgio_header *);
1824 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1825 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1826 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *,
1827 struct rpc_clnt **);
1828 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1829 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *,
1830 struct rpc_clnt **);
1831 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1832 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1833 int (*lock)(struct file *, int, struct file_lock *);
1834 int (*lock_check_bounds)(const struct file_lock *);
1835 void (*clear_acl_cache)(struct inode *);
1836 void (*close_context)(struct nfs_open_context *ctx, int);
1837 struct inode * (*open_context) (struct inode *dir,
1838 struct nfs_open_context *ctx,
1839 int open_flags,
1840 struct iattr *iattr,
1841 int *);
1842 int (*have_delegation)(struct inode *, fmode_t, int);
1843 int (*return_delegation)(struct inode *);
1844 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1845 struct nfs_client *(*init_client) (struct nfs_client *,
1846 const struct nfs_client_initdata *);
1847 void (*free_client) (struct nfs_client *);
1848 struct nfs_server *(*create_server)(struct fs_context *);
1849 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1850 struct nfs_fattr *, rpc_authflavor_t);
1851 int (*discover_trunking)(struct nfs_server *, struct nfs_fh *);
1852 void (*enable_swap)(struct inode *inode);
1853 void (*disable_swap)(struct inode *inode);
1854 };
1855
1856 /*
1857 * Helper functions used by NFS client and/or server
1858 */
encode_opaque_fixed(struct xdr_stream * xdr,const void * buf,size_t len)1859 static inline void encode_opaque_fixed(struct xdr_stream *xdr,
1860 const void *buf, size_t len)
1861 {
1862 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
1863 }
1864
decode_opaque_fixed(struct xdr_stream * xdr,void * buf,size_t len)1865 static inline int decode_opaque_fixed(struct xdr_stream *xdr,
1866 void *buf, size_t len)
1867 {
1868 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
1869 if (unlikely(ret < 0))
1870 return -EIO;
1871 return 0;
1872 }
1873
1874 /*
1875 * Function vectors etc. for the NFS client
1876 */
1877 extern const struct nfs_rpc_ops nfs_v2_clientops;
1878 extern const struct nfs_rpc_ops nfs_v3_clientops;
1879 extern const struct nfs_rpc_ops nfs_v4_clientops;
1880 extern const struct rpc_version nfs_version2;
1881 extern const struct rpc_version nfs_version3;
1882 extern const struct rpc_version nfs_version4;
1883
1884 extern const struct rpc_version nfsacl_version3;
1885 extern const struct rpc_program nfsacl_program;
1886
1887 #endif /* _LINUX_NFS_XDR_H */
1888