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