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NFS: Fix the notifications when renaming onto an existing file
[mirror_ubuntu-zesty-kernel.git] / include / linux / nfs_xdr.h
CommitLineData
1da177e4
LT
1#ifndef _LINUX_NFS_XDR_H
2#define _LINUX_NFS_XDR_H
3
b7fa0554 4#include <linux/nfsacl.h>
1da177e4 5
40859d7e
CL
6/*
7 * To change the maximum rsize and wsize supported by the NFS client, adjust
8 * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can
9 * support a megabyte or more. The default is left at 4096 bytes, which is
10 * reasonable for NFS over UDP.
11 */
12#define NFS_MAX_FILE_IO_SIZE (1048576U)
13#define NFS_DEF_FILE_IO_SIZE (4096U)
14#define NFS_MIN_FILE_IO_SIZE (1024U)
15
8b4bdcf8
TM
16struct nfs_fsid {
17 uint64_t major;
18 uint64_t minor;
1da177e4
LT
19};
20
8b4bdcf8
TM
21/*
22 * Helper for checking equality between 2 fsids.
23 */
24static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
25{
26 return a->major == b->major && a->minor == b->minor;
27}
28
1da177e4 29struct nfs_fattr {
9e6e70f8 30 unsigned int valid; /* which fields are valid */
bca79478 31 umode_t mode;
1da177e4
LT
32 __u32 nlink;
33 __u32 uid;
34 __u32 gid;
9fa8d66f 35 dev_t rdev;
1da177e4
LT
36 __u64 size;
37 union {
38 struct {
39 __u32 blocksize;
40 __u32 blocks;
41 } nfs2;
42 struct {
43 __u64 used;
44 } nfs3;
45 } du;
8b4bdcf8 46 struct nfs_fsid fsid;
1da177e4
LT
47 __u64 fileid;
48 struct timespec atime;
49 struct timespec mtime;
50 struct timespec ctime;
1da177e4
LT
51 __u64 change_attr; /* NFSv4 change attribute */
52 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
1ca277d8
TM
53 __u64 pre_size; /* pre_op_attr.size */
54 struct timespec pre_mtime; /* pre_op_attr.mtime */
55 struct timespec pre_ctime; /* pre_op_attr.ctime */
33801147 56 unsigned long time_start;
4704f0e2 57 unsigned long gencount;
1da177e4
LT
58};
59
9e6e70f8
TM
60#define NFS_ATTR_FATTR_TYPE (1U << 0)
61#define NFS_ATTR_FATTR_MODE (1U << 1)
62#define NFS_ATTR_FATTR_NLINK (1U << 2)
63#define NFS_ATTR_FATTR_OWNER (1U << 3)
64#define NFS_ATTR_FATTR_GROUP (1U << 4)
65#define NFS_ATTR_FATTR_RDEV (1U << 5)
66#define NFS_ATTR_FATTR_SIZE (1U << 6)
67#define NFS_ATTR_FATTR_PRESIZE (1U << 7)
68#define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
69#define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
70#define NFS_ATTR_FATTR_FSID (1U << 10)
71#define NFS_ATTR_FATTR_FILEID (1U << 11)
72#define NFS_ATTR_FATTR_ATIME (1U << 12)
73#define NFS_ATTR_FATTR_MTIME (1U << 13)
74#define NFS_ATTR_FATTR_CTIME (1U << 14)
75#define NFS_ATTR_FATTR_PREMTIME (1U << 15)
76#define NFS_ATTR_FATTR_PRECTIME (1U << 16)
77#define NFS_ATTR_FATTR_CHANGE (1U << 17)
78#define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
79#define NFS_ATTR_FATTR_V4_REFERRAL (1U << 19) /* NFSv4 referral */
80
81#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
82 | NFS_ATTR_FATTR_MODE \
83 | NFS_ATTR_FATTR_NLINK \
84 | NFS_ATTR_FATTR_OWNER \
85 | NFS_ATTR_FATTR_GROUP \
86 | NFS_ATTR_FATTR_RDEV \
87 | NFS_ATTR_FATTR_SIZE \
88 | NFS_ATTR_FATTR_FSID \
89 | NFS_ATTR_FATTR_FILEID \
90 | NFS_ATTR_FATTR_ATIME \
91 | NFS_ATTR_FATTR_MTIME \
92 | NFS_ATTR_FATTR_CTIME)
93#define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
94 | NFS_ATTR_FATTR_BLOCKS_USED)
95#define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
96 | NFS_ATTR_FATTR_SPACE_USED)
97#define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
98 | NFS_ATTR_FATTR_SPACE_USED \
99 | NFS_ATTR_FATTR_CHANGE)
1da177e4
LT
100
101/*
102 * Info on the file system
103 */
104struct nfs_fsinfo {
105 struct nfs_fattr *fattr; /* Post-op attributes */
106 __u32 rtmax; /* max. read transfer size */
107 __u32 rtpref; /* pref. read transfer size */
108 __u32 rtmult; /* reads should be multiple of this */
109 __u32 wtmax; /* max. write transfer size */
110 __u32 wtpref; /* pref. write transfer size */
111 __u32 wtmult; /* writes should be multiple of this */
112 __u32 dtpref; /* pref. readdir transfer size */
113 __u64 maxfilesize;
114 __u32 lease_time; /* in seconds */
115};
116
117struct nfs_fsstat {
118 struct nfs_fattr *fattr; /* Post-op attributes */
119 __u64 tbytes; /* total size in bytes */
120 __u64 fbytes; /* # of free bytes */
121 __u64 abytes; /* # of bytes available to user */
122 __u64 tfiles; /* # of files */
123 __u64 ffiles; /* # of free files */
124 __u64 afiles; /* # of files available to user */
125};
126
127struct nfs2_fsstat {
128 __u32 tsize; /* Server transfer size */
129 __u32 bsize; /* Filesystem block size */
130 __u32 blocks; /* No. of "bsize" blocks on filesystem */
131 __u32 bfree; /* No. of free "bsize" blocks */
132 __u32 bavail; /* No. of available "bsize" blocks */
133};
134
135struct nfs_pathconf {
136 struct nfs_fattr *fattr; /* Post-op attributes */
137 __u32 max_link; /* max # of hard links */
138 __u32 max_namelen; /* max name length */
139};
140
141struct nfs4_change_info {
142 u32 atomic;
143 u64 before;
144 u64 after;
145};
146
cee54fc9 147struct nfs_seqid;
1da177e4
LT
148/*
149 * Arguments to the open call.
150 */
151struct nfs_openargs {
152 const struct nfs_fh * fh;
cee54fc9 153 struct nfs_seqid * seqid;
1da177e4 154 int open_flags;
dc0b027d 155 fmode_t fmode;
1da177e4 156 __u64 clientid;
9f958ab8 157 __u64 id;
1da177e4
LT
158 union {
159 struct iattr * attrs; /* UNCHECKED, GUARDED */
160 nfs4_verifier verifier; /* EXCLUSIVE */
161 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
bd7bf9d5 162 fmode_t delegation_type; /* CLAIM_PREVIOUS */
1da177e4
LT
163 } u;
164 const struct qstr * name;
165 const struct nfs_server *server; /* Needed for ID mapping */
166 const u32 * bitmask;
167 __u32 claim;
168};
169
170struct nfs_openres {
171 nfs4_stateid stateid;
172 struct nfs_fh fh;
173 struct nfs4_change_info cinfo;
174 __u32 rflags;
175 struct nfs_fattr * f_attr;
56ae19f3 176 struct nfs_fattr * dir_attr;
c1d51931 177 struct nfs_seqid * seqid;
1da177e4 178 const struct nfs_server *server;
bd7bf9d5 179 fmode_t delegation_type;
1da177e4
LT
180 nfs4_stateid delegation;
181 __u32 do_recall;
182 __u64 maxsize;
aa53ed54 183 __u32 attrset[NFS4_BITMAP_SIZE];
1da177e4
LT
184};
185
186/*
187 * Arguments to the open_confirm call.
188 */
189struct nfs_open_confirmargs {
190 const struct nfs_fh * fh;
cdd4e68b 191 nfs4_stateid * stateid;
cee54fc9 192 struct nfs_seqid * seqid;
1da177e4
LT
193};
194
195struct nfs_open_confirmres {
196 nfs4_stateid stateid;
c1d51931 197 struct nfs_seqid * seqid;
1da177e4
LT
198};
199
200/*
201 * Arguments to the close call.
202 */
203struct nfs_closeargs {
204 struct nfs_fh * fh;
9512135d 205 nfs4_stateid * stateid;
cee54fc9 206 struct nfs_seqid * seqid;
dc0b027d 207 fmode_t fmode;
516a6af6 208 const u32 * bitmask;
1da177e4
LT
209};
210
211struct nfs_closeres {
212 nfs4_stateid stateid;
516a6af6 213 struct nfs_fattr * fattr;
c1d51931 214 struct nfs_seqid * seqid;
516a6af6 215 const struct nfs_server *server;
1da177e4
LT
216};
217/*
218 * * Arguments to the lock,lockt, and locku call.
219 * */
220struct nfs_lowner {
911d1aaf 221 __u64 clientid;
9f958ab8 222 __u64 id;
1da177e4
LT
223};
224
911d1aaf
TM
225struct nfs_lock_args {
226 struct nfs_fh * fh;
227 struct file_lock * fl;
cee54fc9 228 struct nfs_seqid * lock_seqid;
06735b34
TM
229 nfs4_stateid * lock_stateid;
230 struct nfs_seqid * open_seqid;
231 nfs4_stateid * open_stateid;
911d1aaf
TM
232 struct nfs_lowner lock_owner;
233 unsigned char block : 1;
234 unsigned char reclaim : 1;
235 unsigned char new_lock_owner : 1;
236};
237
238struct nfs_lock_res {
c1d51931
TM
239 nfs4_stateid stateid;
240 struct nfs_seqid * lock_seqid;
241 struct nfs_seqid * open_seqid;
1da177e4
LT
242};
243
911d1aaf
TM
244struct nfs_locku_args {
245 struct nfs_fh * fh;
246 struct file_lock * fl;
cee54fc9 247 struct nfs_seqid * seqid;
faf5f49c 248 nfs4_stateid * stateid;
1da177e4
LT
249};
250
911d1aaf 251struct nfs_locku_res {
c1d51931
TM
252 nfs4_stateid stateid;
253 struct nfs_seqid * seqid;
1da177e4
LT
254};
255
911d1aaf
TM
256struct nfs_lockt_args {
257 struct nfs_fh * fh;
258 struct file_lock * fl;
259 struct nfs_lowner lock_owner;
1da177e4
LT
260};
261
911d1aaf
TM
262struct nfs_lockt_res {
263 struct file_lock * denied; /* LOCK, LOCKT failed */
1da177e4
LT
264};
265
266struct nfs4_delegreturnargs {
267 const struct nfs_fh *fhandle;
268 const nfs4_stateid *stateid;
fa178f29
TM
269 const u32 * bitmask;
270};
271
272struct nfs4_delegreturnres {
273 struct nfs_fattr * fattr;
274 const struct nfs_server *server;
1da177e4
LT
275};
276
277/*
278 * Arguments to the read call.
279 */
1da177e4
LT
280struct nfs_readargs {
281 struct nfs_fh * fh;
282 struct nfs_open_context *context;
283 __u64 offset;
284 __u32 count;
285 unsigned int pgbase;
286 struct page ** pages;
287};
288
289struct nfs_readres {
290 struct nfs_fattr * fattr;
291 __u32 count;
292 int eof;
293};
294
295/*
296 * Arguments to the write call.
297 */
1da177e4
LT
298struct nfs_writeargs {
299 struct nfs_fh * fh;
300 struct nfs_open_context *context;
301 __u64 offset;
302 __u32 count;
303 enum nfs3_stable_how stable;
304 unsigned int pgbase;
305 struct page ** pages;
4f9838c7 306 const u32 * bitmask;
1da177e4
LT
307};
308
309struct nfs_writeverf {
310 enum nfs3_stable_how committed;
bc4785cd 311 __be32 verifier[2];
1da177e4
LT
312};
313
314struct nfs_writeres {
315 struct nfs_fattr * fattr;
316 struct nfs_writeverf * verf;
317 __u32 count;
4f9838c7 318 const struct nfs_server *server;
1da177e4
LT
319};
320
4fdc17b2
TM
321/*
322 * Common arguments to the unlink call
323 */
324struct nfs_removeargs {
325 const struct nfs_fh *fh;
326 struct qstr name;
327 const u32 * bitmask;
328};
329
330struct nfs_removeres {
331 const struct nfs_server *server;
332 struct nfs4_change_info cinfo;
333 struct nfs_fattr dir_attr;
334};
335
1da177e4
LT
336/*
337 * Argument struct for decode_entry function
338 */
339struct nfs_entry {
340 __u64 ino;
341 __u64 cookie,
342 prev_cookie;
343 const char * name;
344 unsigned int len;
345 int eof;
346 struct nfs_fh * fh;
347 struct nfs_fattr * fattr;
348};
349
350/*
351 * The following types are for NFSv2 only.
352 */
353struct nfs_sattrargs {
354 struct nfs_fh * fh;
355 struct iattr * sattr;
356};
357
358struct nfs_diropargs {
359 struct nfs_fh * fh;
360 const char * name;
361 unsigned int len;
362};
363
364struct nfs_createargs {
365 struct nfs_fh * fh;
366 const char * name;
367 unsigned int len;
368 struct iattr * sattr;
369};
370
371struct nfs_renameargs {
372 struct nfs_fh * fromfh;
373 const char * fromname;
374 unsigned int fromlen;
375 struct nfs_fh * tofh;
376 const char * toname;
377 unsigned int tolen;
378};
379
380struct nfs_setattrargs {
381 struct nfs_fh * fh;
382 nfs4_stateid stateid;
383 struct iattr * iap;
384 const struct nfs_server * server; /* Needed for name mapping */
385 const u32 * bitmask;
386};
387
23ec6965
BF
388struct nfs_setaclargs {
389 struct nfs_fh * fh;
390 size_t acl_len;
391 unsigned int acl_pgbase;
392 struct page ** acl_pages;
393};
394
029d105e
BF
395struct nfs_getaclargs {
396 struct nfs_fh * fh;
397 size_t acl_len;
398 unsigned int acl_pgbase;
399 struct page ** acl_pages;
400};
401
1da177e4
LT
402struct nfs_setattrres {
403 struct nfs_fattr * fattr;
404 const struct nfs_server * server;
405};
406
407struct nfs_linkargs {
408 struct nfs_fh * fromfh;
409 struct nfs_fh * tofh;
410 const char * toname;
411 unsigned int tolen;
412};
413
414struct nfs_symlinkargs {
415 struct nfs_fh * fromfh;
416 const char * fromname;
417 unsigned int fromlen;
94a6d753
CL
418 struct page ** pages;
419 unsigned int pathlen;
1da177e4
LT
420 struct iattr * sattr;
421};
422
423struct nfs_readdirargs {
424 struct nfs_fh * fh;
425 __u32 cookie;
426 unsigned int count;
427 struct page ** pages;
428};
429
b7fa0554
AG
430struct nfs3_getaclargs {
431 struct nfs_fh * fh;
432 int mask;
433 struct page ** pages;
434};
435
436struct nfs3_setaclargs {
437 struct inode * inode;
438 int mask;
439 struct posix_acl * acl_access;
440 struct posix_acl * acl_default;
ae46141f
TM
441 size_t len;
442 unsigned int npages;
b7fa0554
AG
443 struct page ** pages;
444};
445
1da177e4
LT
446struct nfs_diropok {
447 struct nfs_fh * fh;
448 struct nfs_fattr * fattr;
449};
450
451struct nfs_readlinkargs {
452 struct nfs_fh * fh;
453 unsigned int pgbase;
454 unsigned int pglen;
455 struct page ** pages;
456};
457
458struct nfs3_sattrargs {
459 struct nfs_fh * fh;
460 struct iattr * sattr;
461 unsigned int guard;
462 struct timespec guardtime;
463};
464
465struct nfs3_diropargs {
466 struct nfs_fh * fh;
467 const char * name;
468 unsigned int len;
469};
470
471struct nfs3_accessargs {
472 struct nfs_fh * fh;
473 __u32 access;
474};
475
476struct nfs3_createargs {
477 struct nfs_fh * fh;
478 const char * name;
479 unsigned int len;
480 struct iattr * sattr;
481 enum nfs3_createmode createmode;
bc4785cd 482 __be32 verifier[2];
1da177e4
LT
483};
484
485struct nfs3_mkdirargs {
486 struct nfs_fh * fh;
487 const char * name;
488 unsigned int len;
489 struct iattr * sattr;
490};
491
492struct nfs3_symlinkargs {
493 struct nfs_fh * fromfh;
494 const char * fromname;
495 unsigned int fromlen;
94a6d753
CL
496 struct page ** pages;
497 unsigned int pathlen;
1da177e4
LT
498 struct iattr * sattr;
499};
500
501struct nfs3_mknodargs {
502 struct nfs_fh * fh;
503 const char * name;
504 unsigned int len;
505 enum nfs3_ftype type;
506 struct iattr * sattr;
507 dev_t rdev;
508};
509
510struct nfs3_renameargs {
511 struct nfs_fh * fromfh;
512 const char * fromname;
513 unsigned int fromlen;
514 struct nfs_fh * tofh;
515 const char * toname;
516 unsigned int tolen;
517};
518
519struct nfs3_linkargs {
520 struct nfs_fh * fromfh;
521 struct nfs_fh * tofh;
522 const char * toname;
523 unsigned int tolen;
524};
525
526struct nfs3_readdirargs {
527 struct nfs_fh * fh;
528 __u64 cookie;
bc4785cd 529 __be32 verf[2];
1da177e4
LT
530 int plus;
531 unsigned int count;
532 struct page ** pages;
533};
534
535struct nfs3_diropres {
536 struct nfs_fattr * dir_attr;
537 struct nfs_fh * fh;
538 struct nfs_fattr * fattr;
539};
540
541struct nfs3_accessres {
542 struct nfs_fattr * fattr;
543 __u32 access;
544};
545
546struct nfs3_readlinkargs {
547 struct nfs_fh * fh;
548 unsigned int pgbase;
549 unsigned int pglen;
550 struct page ** pages;
551};
552
553struct nfs3_renameres {
554 struct nfs_fattr * fromattr;
555 struct nfs_fattr * toattr;
556};
557
558struct nfs3_linkres {
559 struct nfs_fattr * dir_attr;
560 struct nfs_fattr * fattr;
561};
562
563struct nfs3_readdirres {
564 struct nfs_fattr * dir_attr;
bc4785cd 565 __be32 * verf;
1da177e4
LT
566 int plus;
567};
568
b7fa0554
AG
569struct nfs3_getaclres {
570 struct nfs_fattr * fattr;
571 int mask;
572 unsigned int acl_access_count;
573 unsigned int acl_default_count;
574 struct posix_acl * acl_access;
575 struct posix_acl * acl_default;
576};
577
1da177e4
LT
578#ifdef CONFIG_NFS_V4
579
580typedef u64 clientid4;
581
582struct nfs4_accessargs {
583 const struct nfs_fh * fh;
76b32999 584 const u32 * bitmask;
1da177e4
LT
585 u32 access;
586};
587
588struct nfs4_accessres {
76b32999
TM
589 const struct nfs_server * server;
590 struct nfs_fattr * fattr;
1da177e4
LT
591 u32 supported;
592 u32 access;
593};
594
595struct nfs4_create_arg {
596 u32 ftype;
597 union {
94a6d753
CL
598 struct {
599 struct page ** pages;
600 unsigned int len;
601 } symlink; /* NF4LNK */
1da177e4
LT
602 struct {
603 u32 specdata1;
604 u32 specdata2;
605 } device; /* NF4BLK, NF4CHR */
606 } u;
607 const struct qstr * name;
608 const struct nfs_server * server;
609 const struct iattr * attrs;
610 const struct nfs_fh * dir_fh;
611 const u32 * bitmask;
612};
613
614struct nfs4_create_res {
615 const struct nfs_server * server;
616 struct nfs_fh * fh;
617 struct nfs_fattr * fattr;
618 struct nfs4_change_info dir_cinfo;
56ae19f3 619 struct nfs_fattr * dir_fattr;
1da177e4
LT
620};
621
622struct nfs4_fsinfo_arg {
623 const struct nfs_fh * fh;
624 const u32 * bitmask;
625};
626
627struct nfs4_getattr_arg {
628 const struct nfs_fh * fh;
629 const u32 * bitmask;
630};
631
632struct nfs4_getattr_res {
633 const struct nfs_server * server;
634 struct nfs_fattr * fattr;
635};
636
637struct nfs4_link_arg {
638 const struct nfs_fh * fh;
639 const struct nfs_fh * dir_fh;
640 const struct qstr * name;
91ba2eee
TM
641 const u32 * bitmask;
642};
643
644struct nfs4_link_res {
645 const struct nfs_server * server;
646 struct nfs_fattr * fattr;
647 struct nfs4_change_info cinfo;
648 struct nfs_fattr * dir_attr;
1da177e4
LT
649};
650
91ba2eee 651
1da177e4
LT
652struct nfs4_lookup_arg {
653 const struct nfs_fh * dir_fh;
654 const struct qstr * name;
655 const u32 * bitmask;
656};
657
658struct nfs4_lookup_res {
659 const struct nfs_server * server;
660 struct nfs_fattr * fattr;
661 struct nfs_fh * fh;
662};
663
664struct nfs4_lookup_root_arg {
665 const u32 * bitmask;
666};
667
668struct nfs4_pathconf_arg {
669 const struct nfs_fh * fh;
670 const u32 * bitmask;
671};
672
673struct nfs4_readdir_arg {
674 const struct nfs_fh * fh;
675 u64 cookie;
676 nfs4_verifier verifier;
677 u32 count;
678 struct page ** pages; /* zero-copy data */
679 unsigned int pgbase; /* zero-copy data */
680 const u32 * bitmask;
681};
682
683struct nfs4_readdir_res {
684 nfs4_verifier verifier;
685 unsigned int pgbase;
686};
687
688struct nfs4_readlink {
689 const struct nfs_fh * fh;
690 unsigned int pgbase;
691 unsigned int pglen; /* zero-copy data */
692 struct page ** pages; /* zero-copy data */
693};
694
1da177e4
LT
695struct nfs4_rename_arg {
696 const struct nfs_fh * old_dir;
697 const struct nfs_fh * new_dir;
698 const struct qstr * old_name;
699 const struct qstr * new_name;
6caf2c82 700 const u32 * bitmask;
1da177e4
LT
701};
702
703struct nfs4_rename_res {
6caf2c82 704 const struct nfs_server * server;
1da177e4 705 struct nfs4_change_info old_cinfo;
6caf2c82 706 struct nfs_fattr * old_fattr;
1da177e4 707 struct nfs4_change_info new_cinfo;
6caf2c82 708 struct nfs_fattr * new_fattr;
1da177e4
LT
709};
710
19d771f3 711#define NFS4_SETCLIENTID_NAMELEN (127)
1da177e4 712struct nfs4_setclientid {
cc38bac3 713 const nfs4_verifier * sc_verifier;
1da177e4 714 unsigned int sc_name_len;
d1ce02e1 715 char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
cc38bac3 716 u32 sc_prog;
1da177e4 717 unsigned int sc_netid_len;
d1ce02e1 718 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
1da177e4 719 unsigned int sc_uaddr_len;
d1ce02e1 720 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
cc38bac3 721 u32 sc_cb_ident;
1da177e4
LT
722};
723
724struct nfs4_statfs_arg {
725 const struct nfs_fh * fh;
726 const u32 * bitmask;
727};
728
729struct nfs4_server_caps_res {
730 u32 attr_bitmask[2];
731 u32 acl_bitmask;
732 u32 has_links;
733 u32 has_symlinks;
734};
735
7aaa0b3b
MN
736struct nfs4_string {
737 unsigned int len;
738 char *data;
683b57b4
TM
739};
740
7aaa0b3b
MN
741#define NFS4_PATHNAME_MAXCOMPONENTS 512
742struct nfs4_pathname {
743 unsigned int ncomponents;
744 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
745};
746
747#define NFS4_FS_LOCATION_MAXSERVERS 10
748struct nfs4_fs_location {
749 unsigned int nservers;
750 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
751 struct nfs4_pathname rootpath;
752};
753
754#define NFS4_FS_LOCATIONS_MAXENTRIES 10
755struct nfs4_fs_locations {
683b57b4
TM
756 struct nfs_fattr fattr;
757 const struct nfs_server *server;
7aaa0b3b 758 struct nfs4_pathname fs_path;
683b57b4 759 int nlocations;
7aaa0b3b 760 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
683b57b4
TM
761};
762
763struct nfs4_fs_locations_arg {
764 const struct nfs_fh *dir_fh;
765 const struct qstr *name;
766 struct page *page;
767 const u32 *bitmask;
768};
769
1da177e4
LT
770#endif /* CONFIG_NFS_V4 */
771
772struct nfs_page;
773
40859d7e
CL
774#define NFS_PAGEVEC_SIZE (8U)
775
1da177e4
LT
776struct nfs_read_data {
777 int flags;
778 struct rpc_task task;
779 struct inode *inode;
780 struct rpc_cred *cred;
781 struct nfs_fattr fattr; /* fattr storage */
782 struct list_head pages; /* Coalesced read requests */
783 struct nfs_page *req; /* multi ops per nfs_page */
40859d7e 784 struct page **pagevec;
e9f7bee1 785 unsigned int npages; /* Max length of pagevec */
1da177e4
LT
786 struct nfs_readargs args;
787 struct nfs_readres res;
788#ifdef CONFIG_NFS_V4
789 unsigned long timestamp; /* For lease renewal */
790#endif
0d0b5cb3 791 struct page *page_array[NFS_PAGEVEC_SIZE];
1da177e4
LT
792};
793
794struct nfs_write_data {
795 int flags;
796 struct rpc_task task;
797 struct inode *inode;
798 struct rpc_cred *cred;
799 struct nfs_fattr fattr;
800 struct nfs_writeverf verf;
801 struct list_head pages; /* Coalesced requests we wish to flush */
802 struct nfs_page *req; /* multi ops per nfs_page */
40859d7e 803 struct page **pagevec;
e9f7bee1 804 unsigned int npages; /* Max length of pagevec */
1da177e4
LT
805 struct nfs_writeargs args; /* argument struct */
806 struct nfs_writeres res; /* result struct */
807#ifdef CONFIG_NFS_V4
808 unsigned long timestamp; /* For lease renewal */
809#endif
0d0b5cb3 810 struct page *page_array[NFS_PAGEVEC_SIZE];
1da177e4
LT
811};
812
813struct nfs_access_entry;
814
815/*
816 * RPC procedure vector for NFSv2/NFSv3 demuxing
817 */
818struct nfs_rpc_ops {
c0e07cb6 819 u32 version; /* Protocol version */
1da177e4 820 struct dentry_operations *dentry_ops;
c5ef1c42
AV
821 const struct inode_operations *dir_inode_ops;
822 const struct inode_operations *file_inode_ops;
1da177e4
LT
823
824 int (*getroot) (struct nfs_server *, struct nfs_fh *,
825 struct nfs_fsinfo *);
2b3de441
DH
826 int (*lookupfh)(struct nfs_server *, struct nfs_fh *,
827 struct qstr *, struct nfs_fh *,
828 struct nfs_fattr *);
1da177e4
LT
829 int (*getattr) (struct nfs_server *, struct nfs_fh *,
830 struct nfs_fattr *);
831 int (*setattr) (struct dentry *, struct nfs_fattr *,
832 struct iattr *);
833 int (*lookup) (struct inode *, struct qstr *,
834 struct nfs_fh *, struct nfs_fattr *);
835 int (*access) (struct inode *, struct nfs_access_entry *);
836 int (*readlink)(struct inode *, struct page *, unsigned int,
837 unsigned int);
1da177e4 838 int (*create) (struct inode *, struct dentry *,
02a913a7 839 struct iattr *, int, struct nameidata *);
1da177e4 840 int (*remove) (struct inode *, struct qstr *);
e4eff1a6
TM
841 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
842 int (*unlink_done) (struct rpc_task *, struct inode *);
1da177e4
LT
843 int (*rename) (struct inode *, struct qstr *,
844 struct inode *, struct qstr *);
845 int (*link) (struct inode *, struct inode *, struct qstr *);
94a6d753
CL
846 int (*symlink) (struct inode *, struct dentry *, struct page *,
847 unsigned int, struct iattr *);
1da177e4
LT
848 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
849 int (*rmdir) (struct inode *, struct qstr *);
850 int (*readdir) (struct dentry *, struct rpc_cred *,
851 u64, struct page *, unsigned int, int);
852 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
853 dev_t);
854 int (*statfs) (struct nfs_server *, struct nfs_fh *,
855 struct nfs_fsstat *);
856 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
857 struct nfs_fsinfo *);
858 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
859 struct nfs_pathconf *);
e9326dca 860 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
0dbb4c67 861 __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
bdc7f021 862 void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
ec06c096 863 int (*read_done) (struct rpc_task *, struct nfs_read_data *);
bdc7f021 864 void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
788e7a89 865 int (*write_done) (struct rpc_task *, struct nfs_write_data *);
bdc7f021 866 void (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
788e7a89 867 int (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1da177e4 868 int (*lock)(struct file *, int, struct file_lock *);
2116271a 869 int (*lock_check_bounds)(const struct file_lock *);
ada70d94 870 void (*clear_acl_cache)(struct inode *);
1da177e4
LT
871};
872
873/*
874 * NFS_CALL(getattr, inode, (fattr));
875 * into
876 * NFS_PROTO(inode)->getattr(fattr);
877 */
878#define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
879
880/*
881 * Function vectors etc. for the NFS client
882 */
509de811
DH
883extern const struct nfs_rpc_ops nfs_v2_clientops;
884extern const struct nfs_rpc_ops nfs_v3_clientops;
885extern const struct nfs_rpc_ops nfs_v4_clientops;
1da177e4
LT
886extern struct rpc_version nfs_version2;
887extern struct rpc_version nfs_version3;
888extern struct rpc_version nfs_version4;
889
b7fa0554
AG
890extern struct rpc_version nfsacl_version3;
891extern struct rpc_program nfsacl_program;
892
1da177e4 893#endif