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