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NFSv4: Simplify the NFSv4 OPEN compound
[linux-2.6.git] / include / linux / nfs_xdr.h
blob92a929fc97c8ddd91d791ca808ac13f37f040d44
1 #ifndef _LINUX_NFS_XDR_H
2 #define _LINUX_NFS_XDR_H
3
4 #include <linux/nfsacl.h>
5 #include <linux/sunrpc/gss_api.h>
6
7 /*
8 * To change the maximum rsize and wsize supported by the NFS client, adjust
9 * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can
10 * support a megabyte or more. The default is left at 4096 bytes, which is
11 * reasonable for NFS over UDP.
12 */
13 #define NFS_MAX_FILE_IO_SIZE (1048576U)
14 #define NFS_DEF_FILE_IO_SIZE (4096U)
15 #define NFS_MIN_FILE_IO_SIZE (1024U)
16
17 /* Forward declaration for NFS v3 */
18 struct nfs4_secinfo_flavors;
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 */
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 nfs_fattr {
39 unsigned int valid; /* which fields are valid */
40 umode_t mode;
41 __u32 nlink;
42 __u32 uid;
43 __u32 gid;
44 dev_t rdev;
45 __u64 size;
46 union {
47 struct {
48 __u32 blocksize;
49 __u32 blocks;
50 } nfs2;
51 struct {
52 __u64 used;
53 } nfs3;
54 } du;
55 struct nfs_fsid fsid;
56 __u64 fileid;
57 __u64 mounted_on_fileid;
58 struct timespec atime;
59 struct timespec mtime;
60 struct timespec ctime;
61 __u64 change_attr; /* NFSv4 change attribute */
62 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
63 __u64 pre_size; /* pre_op_attr.size */
64 struct timespec pre_mtime; /* pre_op_attr.mtime */
65 struct timespec pre_ctime; /* pre_op_attr.ctime */
66 unsigned long time_start;
67 unsigned long gencount;
68 struct nfs4_string *owner_name;
69 struct nfs4_string *group_name;
70 };
71
72 #define NFS_ATTR_FATTR_TYPE (1U << 0)
73 #define NFS_ATTR_FATTR_MODE (1U << 1)
74 #define NFS_ATTR_FATTR_NLINK (1U << 2)
75 #define NFS_ATTR_FATTR_OWNER (1U << 3)
76 #define NFS_ATTR_FATTR_GROUP (1U << 4)
77 #define NFS_ATTR_FATTR_RDEV (1U << 5)
78 #define NFS_ATTR_FATTR_SIZE (1U << 6)
79 #define NFS_ATTR_FATTR_PRESIZE (1U << 7)
80 #define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
81 #define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
82 #define NFS_ATTR_FATTR_FSID (1U << 10)
83 #define NFS_ATTR_FATTR_FILEID (1U << 11)
84 #define NFS_ATTR_FATTR_ATIME (1U << 12)
85 #define NFS_ATTR_FATTR_MTIME (1U << 13)
86 #define NFS_ATTR_FATTR_CTIME (1U << 14)
87 #define NFS_ATTR_FATTR_PREMTIME (1U << 15)
88 #define NFS_ATTR_FATTR_PRECTIME (1U << 16)
89 #define NFS_ATTR_FATTR_CHANGE (1U << 17)
90 #define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
91 #define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19)
92 #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20)
93 #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21)
94 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
95 #define NFS_ATTR_FATTR_OWNER_NAME (1U << 23)
96 #define NFS_ATTR_FATTR_GROUP_NAME (1U << 24)
97
98 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
99 | NFS_ATTR_FATTR_MODE \
100 | NFS_ATTR_FATTR_NLINK \
101 | NFS_ATTR_FATTR_OWNER \
102 | NFS_ATTR_FATTR_GROUP \
103 | NFS_ATTR_FATTR_RDEV \
104 | NFS_ATTR_FATTR_SIZE \
105 | NFS_ATTR_FATTR_FSID \
106 | NFS_ATTR_FATTR_FILEID \
107 | NFS_ATTR_FATTR_ATIME \
108 | NFS_ATTR_FATTR_MTIME \
109 | NFS_ATTR_FATTR_CTIME \
110 | NFS_ATTR_FATTR_CHANGE)
111 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
112 | NFS_ATTR_FATTR_BLOCKS_USED)
113 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
114 | NFS_ATTR_FATTR_SPACE_USED)
115 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
116 | NFS_ATTR_FATTR_SPACE_USED)
117
118 /*
119 * Info on the file system
120 */
121 struct nfs_fsinfo {
122 struct nfs_fattr *fattr; /* Post-op attributes */
123 __u32 rtmax; /* max. read transfer size */
124 __u32 rtpref; /* pref. read transfer size */
125 __u32 rtmult; /* reads should be multiple of this */
126 __u32 wtmax; /* max. write transfer size */
127 __u32 wtpref; /* pref. write transfer size */
128 __u32 wtmult; /* writes should be multiple of this */
129 __u32 dtpref; /* pref. readdir transfer size */
130 __u64 maxfilesize;
131 struct timespec time_delta; /* server time granularity */
132 __u32 lease_time; /* in seconds */
133 __u32 layouttype; /* supported pnfs layout driver */
134 __u32 blksize; /* preferred pnfs io block size */
135 };
136
137 struct nfs_fsstat {
138 struct nfs_fattr *fattr; /* Post-op attributes */
139 __u64 tbytes; /* total size in bytes */
140 __u64 fbytes; /* # of free bytes */
141 __u64 abytes; /* # of bytes available to user */
142 __u64 tfiles; /* # of files */
143 __u64 ffiles; /* # of free files */
144 __u64 afiles; /* # of files available to user */
145 };
146
147 struct nfs2_fsstat {
148 __u32 tsize; /* Server transfer size */
149 __u32 bsize; /* Filesystem block size */
150 __u32 blocks; /* No. of "bsize" blocks on filesystem */
151 __u32 bfree; /* No. of free "bsize" blocks */
152 __u32 bavail; /* No. of available "bsize" blocks */
153 };
154
155 struct nfs_pathconf {
156 struct nfs_fattr *fattr; /* Post-op attributes */
157 __u32 max_link; /* max # of hard links */
158 __u32 max_namelen; /* max name length */
159 };
160
161 struct nfs4_change_info {
162 u32 atomic;
163 u64 before;
164 u64 after;
165 };
166
167 struct nfs_seqid;
168
169 /* nfs41 sessions channel attributes */
170 struct nfs4_channel_attrs {
171 u32 max_rqst_sz;
172 u32 max_resp_sz;
173 u32 max_resp_sz_cached;
174 u32 max_ops;
175 u32 max_reqs;
176 };
177
178 /* nfs41 sessions slot seqid */
179 struct nfs4_slot {
180 u32 seq_nr;
181 };
182
183 struct nfs4_sequence_args {
184 struct nfs4_session *sa_session;
185 u32 sa_slotid;
186 u8 sa_cache_this;
187 };
188
189 struct nfs4_sequence_res {
190 struct nfs4_session *sr_session;
191 struct nfs4_slot *sr_slot; /* slot used to send request */
192 int sr_status; /* sequence operation status */
193 unsigned long sr_renewal_time;
194 u32 sr_status_flags;
195 };
196
197 struct nfs4_get_lease_time_args {
198 struct nfs4_sequence_args la_seq_args;
199 };
200
201 struct nfs4_get_lease_time_res {
202 struct nfs_fsinfo *lr_fsinfo;
203 struct nfs4_sequence_res lr_seq_res;
204 };
205
206 #define PNFS_LAYOUT_MAXSIZE 4096
207
208 struct nfs4_layoutdriver_data {
209 struct page **pages;
210 __u32 pglen;
211 __u32 len;
212 };
213
214 struct pnfs_layout_range {
215 u32 iomode;
216 u64 offset;
217 u64 length;
218 };
219
220 struct nfs4_layoutget_args {
221 __u32 type;
222 struct pnfs_layout_range range;
223 __u64 minlength;
224 __u32 maxcount;
225 struct inode *inode;
226 struct nfs_open_context *ctx;
227 struct nfs4_sequence_args seq_args;
228 nfs4_stateid stateid;
229 struct nfs4_layoutdriver_data layout;
230 };
231
232 struct nfs4_layoutget_res {
233 __u32 return_on_close;
234 struct pnfs_layout_range range;
235 __u32 type;
236 nfs4_stateid stateid;
237 struct nfs4_sequence_res seq_res;
238 struct nfs4_layoutdriver_data *layoutp;
239 };
240
241 struct nfs4_layoutget {
242 struct nfs4_layoutget_args args;
243 struct nfs4_layoutget_res res;
244 struct pnfs_layout_segment **lsegpp;
245 gfp_t gfp_flags;
246 };
247
248 struct nfs4_getdevicelist_args {
249 const struct nfs_fh *fh;
250 u32 layoutclass;
251 struct nfs4_sequence_args seq_args;
252 };
253
254 struct nfs4_getdevicelist_res {
255 struct pnfs_devicelist *devlist;
256 struct nfs4_sequence_res seq_res;
257 };
258
259 struct nfs4_getdeviceinfo_args {
260 struct pnfs_device *pdev;
261 struct nfs4_sequence_args seq_args;
262 };
263
264 struct nfs4_getdeviceinfo_res {
265 struct pnfs_device *pdev;
266 struct nfs4_sequence_res seq_res;
267 };
268
269 struct nfs4_layoutcommit_args {
270 nfs4_stateid stateid;
271 __u64 lastbytewritten;
272 struct inode *inode;
273 const u32 *bitmask;
274 struct nfs4_sequence_args seq_args;
275 };
276
277 struct nfs4_layoutcommit_res {
278 struct nfs_fattr *fattr;
279 const struct nfs_server *server;
280 struct nfs4_sequence_res seq_res;
281 int status;
282 };
283
284 struct nfs4_layoutcommit_data {
285 struct rpc_task task;
286 struct nfs_fattr fattr;
287 struct list_head lseg_list;
288 struct rpc_cred *cred;
289 struct nfs4_layoutcommit_args args;
290 struct nfs4_layoutcommit_res res;
291 };
292
293 struct nfs4_layoutreturn_args {
294 struct pnfs_layout_hdr *layout;
295 struct inode *inode;
296 nfs4_stateid stateid;
297 __u32 layout_type;
298 struct nfs4_sequence_args seq_args;
299 };
300
301 struct nfs4_layoutreturn_res {
302 struct nfs4_sequence_res seq_res;
303 u32 lrs_present;
304 nfs4_stateid stateid;
305 };
306
307 struct nfs4_layoutreturn {
308 struct nfs4_layoutreturn_args args;
309 struct nfs4_layoutreturn_res res;
310 struct rpc_cred *cred;
311 struct nfs_client *clp;
312 int rpc_status;
313 };
314
315 struct stateowner_id {
316 __u64 create_time;
317 __u32 uniquifier;
318 };
319
320 /*
321 * Arguments to the open call.
322 */
323 struct nfs_openargs {
324 const struct nfs_fh * fh;
325 struct nfs_seqid * seqid;
326 int open_flags;
327 fmode_t fmode;
328 __u64 clientid;
329 struct stateowner_id id;
330 union {
331 struct {
332 struct iattr * attrs; /* UNCHECKED, GUARDED */
333 nfs4_verifier verifier; /* EXCLUSIVE */
334 };
335 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
336 fmode_t delegation_type; /* CLAIM_PREVIOUS */
337 } u;
338 const struct qstr * name;
339 const struct nfs_server *server; /* Needed for ID mapping */
340 const u32 * bitmask;
341 __u32 claim;
342 struct nfs4_sequence_args seq_args;
343 };
344
345 struct nfs_openres {
346 nfs4_stateid stateid;
347 struct nfs_fh fh;
348 struct nfs4_change_info cinfo;
349 __u32 rflags;
350 struct nfs_fattr * f_attr;
351 struct nfs_seqid * seqid;
352 const struct nfs_server *server;
353 fmode_t delegation_type;
354 nfs4_stateid delegation;
355 __u32 do_recall;
356 __u64 maxsize;
357 __u32 attrset[NFS4_BITMAP_SIZE];
358 struct nfs4_string *owner;
359 struct nfs4_string *group_owner;
360 struct nfs4_sequence_res seq_res;
361 };
362
363 /*
364 * Arguments to the open_confirm call.
365 */
366 struct nfs_open_confirmargs {
367 const struct nfs_fh * fh;
368 nfs4_stateid * stateid;
369 struct nfs_seqid * seqid;
370 };
371
372 struct nfs_open_confirmres {
373 nfs4_stateid stateid;
374 struct nfs_seqid * seqid;
375 };
376
377 /*
378 * Arguments to the close call.
379 */
380 struct nfs_closeargs {
381 struct nfs_fh * fh;
382 nfs4_stateid * stateid;
383 struct nfs_seqid * seqid;
384 fmode_t fmode;
385 const u32 * bitmask;
386 struct nfs4_sequence_args seq_args;
387 };
388
389 struct nfs_closeres {
390 nfs4_stateid stateid;
391 struct nfs_fattr * fattr;
392 struct nfs_seqid * seqid;
393 const struct nfs_server *server;
394 struct nfs4_sequence_res seq_res;
395 };
396 /*
397 * * Arguments to the lock,lockt, and locku call.
398 * */
399 struct nfs_lowner {
400 __u64 clientid;
401 __u64 id;
402 dev_t s_dev;
403 };
404
405 struct nfs_lock_args {
406 struct nfs_fh * fh;
407 struct file_lock * fl;
408 struct nfs_seqid * lock_seqid;
409 nfs4_stateid * lock_stateid;
410 struct nfs_seqid * open_seqid;
411 nfs4_stateid * open_stateid;
412 struct nfs_lowner lock_owner;
413 unsigned char block : 1;
414 unsigned char reclaim : 1;
415 unsigned char new_lock_owner : 1;
416 struct nfs4_sequence_args seq_args;
417 };
418
419 struct nfs_lock_res {
420 nfs4_stateid stateid;
421 struct nfs_seqid * lock_seqid;
422 struct nfs_seqid * open_seqid;
423 struct nfs4_sequence_res seq_res;
424 };
425
426 struct nfs_locku_args {
427 struct nfs_fh * fh;
428 struct file_lock * fl;
429 struct nfs_seqid * seqid;
430 nfs4_stateid * stateid;
431 struct nfs4_sequence_args seq_args;
432 };
433
434 struct nfs_locku_res {
435 nfs4_stateid stateid;
436 struct nfs_seqid * seqid;
437 struct nfs4_sequence_res seq_res;
438 };
439
440 struct nfs_lockt_args {
441 struct nfs_fh * fh;
442 struct file_lock * fl;
443 struct nfs_lowner lock_owner;
444 struct nfs4_sequence_args seq_args;
445 };
446
447 struct nfs_lockt_res {
448 struct file_lock * denied; /* LOCK, LOCKT failed */
449 struct nfs4_sequence_res seq_res;
450 };
451
452 struct nfs_release_lockowner_args {
453 struct nfs_lowner lock_owner;
454 };
455
456 struct nfs4_delegreturnargs {
457 const struct nfs_fh *fhandle;
458 const nfs4_stateid *stateid;
459 const u32 * bitmask;
460 struct nfs4_sequence_args seq_args;
461 };
462
463 struct nfs4_delegreturnres {
464 struct nfs_fattr * fattr;
465 const struct nfs_server *server;
466 struct nfs4_sequence_res seq_res;
467 };
468
469 /*
470 * Arguments to the read call.
471 */
472 struct nfs_readargs {
473 struct nfs_fh * fh;
474 struct nfs_open_context *context;
475 struct nfs_lock_context *lock_context;
476 __u64 offset;
477 __u32 count;
478 unsigned int pgbase;
479 struct page ** pages;
480 struct nfs4_sequence_args seq_args;
481 };
482
483 struct nfs_readres {
484 struct nfs_fattr * fattr;
485 __u32 count;
486 int eof;
487 struct nfs4_sequence_res seq_res;
488 };
489
490 /*
491 * Arguments to the write call.
492 */
493 struct nfs_writeargs {
494 struct nfs_fh * fh;
495 struct nfs_open_context *context;
496 struct nfs_lock_context *lock_context;
497 __u64 offset;
498 __u32 count;
499 enum nfs3_stable_how stable;
500 unsigned int pgbase;
501 struct page ** pages;
502 const u32 * bitmask;
503 struct nfs4_sequence_args seq_args;
504 };
505
506 struct nfs_writeverf {
507 enum nfs3_stable_how committed;
508 __be32 verifier[2];
509 };
510
511 struct nfs_writeres {
512 struct nfs_fattr * fattr;
513 struct nfs_writeverf * verf;
514 __u32 count;
515 const struct nfs_server *server;
516 struct nfs4_sequence_res seq_res;
517 };
518
519 /*
520 * Arguments to the commit call.
521 */
522 struct nfs_commitargs {
523 struct nfs_fh *fh;
524 __u64 offset;
525 __u32 count;
526 const u32 *bitmask;
527 struct nfs4_sequence_args seq_args;
528 };
529
530 struct nfs_commitres {
531 struct nfs_fattr *fattr;
532 struct nfs_writeverf *verf;
533 const struct nfs_server *server;
534 struct nfs4_sequence_res seq_res;
535 };
536
537 /*
538 * Common arguments to the unlink call
539 */
540 struct nfs_removeargs {
541 const struct nfs_fh *fh;
542 struct qstr name;
543 const u32 * bitmask;
544 struct nfs4_sequence_args seq_args;
545 };
546
547 struct nfs_removeres {
548 const struct nfs_server *server;
549 struct nfs_fattr *dir_attr;
550 struct nfs4_change_info cinfo;
551 struct nfs4_sequence_res seq_res;
552 };
553
554 /*
555 * Common arguments to the rename call
556 */
557 struct nfs_renameargs {
558 const struct nfs_fh *old_dir;
559 const struct nfs_fh *new_dir;
560 const struct qstr *old_name;
561 const struct qstr *new_name;
562 const u32 *bitmask;
563 struct nfs4_sequence_args seq_args;
564 };
565
566 struct nfs_renameres {
567 const struct nfs_server *server;
568 struct nfs4_change_info old_cinfo;
569 struct nfs_fattr *old_fattr;
570 struct nfs4_change_info new_cinfo;
571 struct nfs_fattr *new_fattr;
572 struct nfs4_sequence_res seq_res;
573 };
574
575 /*
576 * Argument struct for decode_entry function
577 */
578 struct nfs_entry {
579 __u64 ino;
580 __u64 cookie,
581 prev_cookie;
582 const char * name;
583 unsigned int len;
584 int eof;
585 struct nfs_fh * fh;
586 struct nfs_fattr * fattr;
587 unsigned char d_type;
588 struct nfs_server * server;
589 };
590
591 /*
592 * The following types are for NFSv2 only.
593 */
594 struct nfs_sattrargs {
595 struct nfs_fh * fh;
596 struct iattr * sattr;
597 };
598
599 struct nfs_diropargs {
600 struct nfs_fh * fh;
601 const char * name;
602 unsigned int len;
603 };
604
605 struct nfs_createargs {
606 struct nfs_fh * fh;
607 const char * name;
608 unsigned int len;
609 struct iattr * sattr;
610 };
611
612 struct nfs_setattrargs {
613 struct nfs_fh * fh;
614 nfs4_stateid stateid;
615 struct iattr * iap;
616 const struct nfs_server * server; /* Needed for name mapping */
617 const u32 * bitmask;
618 struct nfs4_sequence_args seq_args;
619 };
620
621 struct nfs_setaclargs {
622 struct nfs_fh * fh;
623 size_t acl_len;
624 unsigned int acl_pgbase;
625 struct page ** acl_pages;
626 struct nfs4_sequence_args seq_args;
627 };
628
629 struct nfs_setaclres {
630 struct nfs4_sequence_res seq_res;
631 };
632
633 struct nfs_getaclargs {
634 struct nfs_fh * fh;
635 size_t acl_len;
636 unsigned int acl_pgbase;
637 struct page ** acl_pages;
638 struct nfs4_sequence_args seq_args;
639 };
640
641 /* getxattr ACL interface flags */
642 #define NFS4_ACL_LEN_REQUEST 0x0001 /* zero length getxattr buffer */
643 struct nfs_getaclres {
644 size_t acl_len;
645 size_t acl_data_offset;
646 int acl_flags;
647 struct page * acl_scratch;
648 struct nfs4_sequence_res seq_res;
649 };
650
651 struct nfs_setattrres {
652 struct nfs_fattr * fattr;
653 const struct nfs_server * server;
654 struct nfs4_sequence_res seq_res;
655 };
656
657 struct nfs_linkargs {
658 struct nfs_fh * fromfh;
659 struct nfs_fh * tofh;
660 const char * toname;
661 unsigned int tolen;
662 };
663
664 struct nfs_symlinkargs {
665 struct nfs_fh * fromfh;
666 const char * fromname;
667 unsigned int fromlen;
668 struct page ** pages;
669 unsigned int pathlen;
670 struct iattr * sattr;
671 };
672
673 struct nfs_readdirargs {
674 struct nfs_fh * fh;
675 __u32 cookie;
676 unsigned int count;
677 struct page ** pages;
678 };
679
680 struct nfs3_getaclargs {
681 struct nfs_fh * fh;
682 int mask;
683 struct page ** pages;
684 };
685
686 struct nfs3_setaclargs {
687 struct inode * inode;
688 int mask;
689 struct posix_acl * acl_access;
690 struct posix_acl * acl_default;
691 size_t len;
692 unsigned int npages;
693 struct page ** pages;
694 };
695
696 struct nfs_diropok {
697 struct nfs_fh * fh;
698 struct nfs_fattr * fattr;
699 };
700
701 struct nfs_readlinkargs {
702 struct nfs_fh * fh;
703 unsigned int pgbase;
704 unsigned int pglen;
705 struct page ** pages;
706 };
707
708 struct nfs3_sattrargs {
709 struct nfs_fh * fh;
710 struct iattr * sattr;
711 unsigned int guard;
712 struct timespec guardtime;
713 };
714
715 struct nfs3_diropargs {
716 struct nfs_fh * fh;
717 const char * name;
718 unsigned int len;
719 };
720
721 struct nfs3_accessargs {
722 struct nfs_fh * fh;
723 __u32 access;
724 };
725
726 struct nfs3_createargs {
727 struct nfs_fh * fh;
728 const char * name;
729 unsigned int len;
730 struct iattr * sattr;
731 enum nfs3_createmode createmode;
732 __be32 verifier[2];
733 };
734
735 struct nfs3_mkdirargs {
736 struct nfs_fh * fh;
737 const char * name;
738 unsigned int len;
739 struct iattr * sattr;
740 };
741
742 struct nfs3_symlinkargs {
743 struct nfs_fh * fromfh;
744 const char * fromname;
745 unsigned int fromlen;
746 struct page ** pages;
747 unsigned int pathlen;
748 struct iattr * sattr;
749 };
750
751 struct nfs3_mknodargs {
752 struct nfs_fh * fh;
753 const char * name;
754 unsigned int len;
755 enum nfs3_ftype type;
756 struct iattr * sattr;
757 dev_t rdev;
758 };
759
760 struct nfs3_linkargs {
761 struct nfs_fh * fromfh;
762 struct nfs_fh * tofh;
763 const char * toname;
764 unsigned int tolen;
765 };
766
767 struct nfs3_readdirargs {
768 struct nfs_fh * fh;
769 __u64 cookie;
770 __be32 verf[2];
771 int plus;
772 unsigned int count;
773 struct page ** pages;
774 };
775
776 struct nfs3_diropres {
777 struct nfs_fattr * dir_attr;
778 struct nfs_fh * fh;
779 struct nfs_fattr * fattr;
780 };
781
782 struct nfs3_accessres {
783 struct nfs_fattr * fattr;
784 __u32 access;
785 };
786
787 struct nfs3_readlinkargs {
788 struct nfs_fh * fh;
789 unsigned int pgbase;
790 unsigned int pglen;
791 struct page ** pages;
792 };
793
794 struct nfs3_linkres {
795 struct nfs_fattr * dir_attr;
796 struct nfs_fattr * fattr;
797 };
798
799 struct nfs3_readdirres {
800 struct nfs_fattr * dir_attr;
801 __be32 * verf;
802 int plus;
803 };
804
805 struct nfs3_getaclres {
806 struct nfs_fattr * fattr;
807 int mask;
808 unsigned int acl_access_count;
809 unsigned int acl_default_count;
810 struct posix_acl * acl_access;
811 struct posix_acl * acl_default;
812 };
813
814 #ifdef CONFIG_NFS_V4
815
816 typedef u64 clientid4;
817
818 struct nfs4_accessargs {
819 const struct nfs_fh * fh;
820 const u32 * bitmask;
821 u32 access;
822 struct nfs4_sequence_args seq_args;
823 };
824
825 struct nfs4_accessres {
826 const struct nfs_server * server;
827 struct nfs_fattr * fattr;
828 u32 supported;
829 u32 access;
830 struct nfs4_sequence_res seq_res;
831 };
832
833 struct nfs4_create_arg {
834 u32 ftype;
835 union {
836 struct {
837 struct page ** pages;
838 unsigned int len;
839 } symlink; /* NF4LNK */
840 struct {
841 u32 specdata1;
842 u32 specdata2;
843 } device; /* NF4BLK, NF4CHR */
844 } u;
845 const struct qstr * name;
846 const struct nfs_server * server;
847 const struct iattr * attrs;
848 const struct nfs_fh * dir_fh;
849 const u32 * bitmask;
850 struct nfs4_sequence_args seq_args;
851 };
852
853 struct nfs4_create_res {
854 const struct nfs_server * server;
855 struct nfs_fh * fh;
856 struct nfs_fattr * fattr;
857 struct nfs4_change_info dir_cinfo;
858 struct nfs_fattr * dir_fattr;
859 struct nfs4_sequence_res seq_res;
860 };
861
862 struct nfs4_fsinfo_arg {
863 const struct nfs_fh * fh;
864 const u32 * bitmask;
865 struct nfs4_sequence_args seq_args;
866 };
867
868 struct nfs4_fsinfo_res {
869 struct nfs_fsinfo *fsinfo;
870 struct nfs4_sequence_res seq_res;
871 };
872
873 struct nfs4_getattr_arg {
874 const struct nfs_fh * fh;
875 const u32 * bitmask;
876 struct nfs4_sequence_args seq_args;
877 };
878
879 struct nfs4_getattr_res {
880 const struct nfs_server * server;
881 struct nfs_fattr * fattr;
882 struct nfs4_sequence_res seq_res;
883 };
884
885 struct nfs4_link_arg {
886 const struct nfs_fh * fh;
887 const struct nfs_fh * dir_fh;
888 const struct qstr * name;
889 const u32 * bitmask;
890 struct nfs4_sequence_args seq_args;
891 };
892
893 struct nfs4_link_res {
894 const struct nfs_server * server;
895 struct nfs_fattr * fattr;
896 struct nfs4_change_info cinfo;
897 struct nfs_fattr * dir_attr;
898 struct nfs4_sequence_res seq_res;
899 };
900
901
902 struct nfs4_lookup_arg {
903 const struct nfs_fh * dir_fh;
904 const struct qstr * name;
905 const u32 * bitmask;
906 struct nfs4_sequence_args seq_args;
907 };
908
909 struct nfs4_lookup_res {
910 const struct nfs_server * server;
911 struct nfs_fattr * fattr;
912 struct nfs_fh * fh;
913 struct nfs4_sequence_res seq_res;
914 };
915
916 struct nfs4_lookup_root_arg {
917 const u32 * bitmask;
918 struct nfs4_sequence_args seq_args;
919 };
920
921 struct nfs4_pathconf_arg {
922 const struct nfs_fh * fh;
923 const u32 * bitmask;
924 struct nfs4_sequence_args seq_args;
925 };
926
927 struct nfs4_pathconf_res {
928 struct nfs_pathconf *pathconf;
929 struct nfs4_sequence_res seq_res;
930 };
931
932 struct nfs4_readdir_arg {
933 const struct nfs_fh * fh;
934 u64 cookie;
935 nfs4_verifier verifier;
936 u32 count;
937 struct page ** pages; /* zero-copy data */
938 unsigned int pgbase; /* zero-copy data */
939 const u32 * bitmask;
940 int plus;
941 struct nfs4_sequence_args seq_args;
942 };
943
944 struct nfs4_readdir_res {
945 nfs4_verifier verifier;
946 unsigned int pgbase;
947 struct nfs4_sequence_res seq_res;
948 };
949
950 struct nfs4_readlink {
951 const struct nfs_fh * fh;
952 unsigned int pgbase;
953 unsigned int pglen; /* zero-copy data */
954 struct page ** pages; /* zero-copy data */
955 struct nfs4_sequence_args seq_args;
956 };
957
958 struct nfs4_readlink_res {
959 struct nfs4_sequence_res seq_res;
960 };
961
962 #define NFS4_SETCLIENTID_NAMELEN (127)
963 struct nfs4_setclientid {
964 const nfs4_verifier * sc_verifier;
965 unsigned int sc_name_len;
966 char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
967 u32 sc_prog;
968 unsigned int sc_netid_len;
969 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
970 unsigned int sc_uaddr_len;
971 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
972 u32 sc_cb_ident;
973 };
974
975 struct nfs4_setclientid_res {
976 u64 clientid;
977 nfs4_verifier confirm;
978 };
979
980 struct nfs4_statfs_arg {
981 const struct nfs_fh * fh;
982 const u32 * bitmask;
983 struct nfs4_sequence_args seq_args;
984 };
985
986 struct nfs4_statfs_res {
987 struct nfs_fsstat *fsstat;
988 struct nfs4_sequence_res seq_res;
989 };
990
991 struct nfs4_server_caps_arg {
992 struct nfs_fh *fhandle;
993 struct nfs4_sequence_args seq_args;
994 };
995
996 struct nfs4_server_caps_res {
997 u32 attr_bitmask[3];
998 u32 acl_bitmask;
999 u32 has_links;
1000 u32 has_symlinks;
1001 u32 fh_expire_type;
1002 struct nfs4_sequence_res seq_res;
1003 };
1004
1005 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1006 struct nfs4_pathname {
1007 unsigned int ncomponents;
1008 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1009 };
1010
1011 #define NFS4_FS_LOCATION_MAXSERVERS 10
1012 struct nfs4_fs_location {
1013 unsigned int nservers;
1014 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1015 struct nfs4_pathname rootpath;
1016 };
1017
1018 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1019 struct nfs4_fs_locations {
1020 struct nfs_fattr fattr;
1021 const struct nfs_server *server;
1022 struct nfs4_pathname fs_path;
1023 int nlocations;
1024 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1025 };
1026
1027 struct nfs4_fs_locations_arg {
1028 const struct nfs_fh *dir_fh;
1029 const struct qstr *name;
1030 struct page *page;
1031 const u32 *bitmask;
1032 struct nfs4_sequence_args seq_args;
1033 };
1034
1035 struct nfs4_fs_locations_res {
1036 struct nfs4_fs_locations *fs_locations;
1037 struct nfs4_sequence_res seq_res;
1038 };
1039
1040 struct nfs4_secinfo_oid {
1041 unsigned int len;
1042 char data[GSS_OID_MAX_LEN];
1043 };
1044
1045 struct nfs4_secinfo_gss {
1046 struct nfs4_secinfo_oid sec_oid4;
1047 unsigned int qop4;
1048 unsigned int service;
1049 };
1050
1051 struct nfs4_secinfo_flavor {
1052 unsigned int flavor;
1053 struct nfs4_secinfo_gss gss;
1054 };
1055
1056 struct nfs4_secinfo_flavors {
1057 unsigned int num_flavors;
1058 struct nfs4_secinfo_flavor flavors[0];
1059 };
1060
1061 struct nfs4_secinfo_arg {
1062 const struct nfs_fh *dir_fh;
1063 const struct qstr *name;
1064 struct nfs4_sequence_args seq_args;
1065 };
1066
1067 struct nfs4_secinfo_res {
1068 struct nfs4_secinfo_flavors *flavors;
1069 struct nfs4_sequence_res seq_res;
1070 };
1071
1072 #endif /* CONFIG_NFS_V4 */
1073
1074 struct nfstime4 {
1075 u64 seconds;
1076 u32 nseconds;
1077 };
1078
1079 #ifdef CONFIG_NFS_V4_1
1080
1081 struct pnfs_commit_bucket {
1082 struct list_head written;
1083 struct list_head committing;
1084 struct pnfs_layout_segment *wlseg;
1085 struct pnfs_layout_segment *clseg;
1086 };
1087
1088 struct pnfs_ds_commit_info {
1089 int nwritten;
1090 int ncommitting;
1091 int nbuckets;
1092 struct pnfs_commit_bucket *buckets;
1093 };
1094
1095 #define NFS4_EXCHANGE_ID_LEN (48)
1096 struct nfs41_exchange_id_args {
1097 struct nfs_client *client;
1098 nfs4_verifier *verifier;
1099 unsigned int id_len;
1100 char id[NFS4_EXCHANGE_ID_LEN];
1101 u32 flags;
1102 };
1103
1104 struct server_owner {
1105 uint64_t minor_id;
1106 uint32_t major_id_sz;
1107 char major_id[NFS4_OPAQUE_LIMIT];
1108 };
1109
1110 struct server_scope {
1111 uint32_t server_scope_sz;
1112 char server_scope[NFS4_OPAQUE_LIMIT];
1113 };
1114
1115 struct nfs41_impl_id {
1116 char domain[NFS4_OPAQUE_LIMIT + 1];
1117 char name[NFS4_OPAQUE_LIMIT + 1];
1118 struct nfstime4 date;
1119 };
1120
1121 struct nfs41_exchange_id_res {
1122 struct nfs_client *client;
1123 u32 flags;
1124 struct server_scope *server_scope;
1125 struct nfs41_impl_id *impl_id;
1126 };
1127
1128 struct nfs41_create_session_args {
1129 struct nfs_client *client;
1130 uint32_t flags;
1131 uint32_t cb_program;
1132 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1133 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1134 };
1135
1136 struct nfs41_create_session_res {
1137 struct nfs_client *client;
1138 };
1139
1140 struct nfs41_reclaim_complete_args {
1141 /* In the future extend to include curr_fh for use with migration */
1142 unsigned char one_fs:1;
1143 struct nfs4_sequence_args seq_args;
1144 };
1145
1146 struct nfs41_reclaim_complete_res {
1147 struct nfs4_sequence_res seq_res;
1148 };
1149
1150 #define SECINFO_STYLE_CURRENT_FH 0
1151 #define SECINFO_STYLE_PARENT 1
1152 struct nfs41_secinfo_no_name_args {
1153 int style;
1154 struct nfs4_sequence_args seq_args;
1155 };
1156
1157 struct nfs41_test_stateid_args {
1158 nfs4_stateid *stateid;
1159 struct nfs4_sequence_args seq_args;
1160 };
1161
1162 struct nfs41_test_stateid_res {
1163 unsigned int status;
1164 struct nfs4_sequence_res seq_res;
1165 };
1166
1167 struct nfs41_free_stateid_args {
1168 nfs4_stateid *stateid;
1169 struct nfs4_sequence_args seq_args;
1170 };
1171
1172 struct nfs41_free_stateid_res {
1173 unsigned int status;
1174 struct nfs4_sequence_res seq_res;
1175 };
1176
1177 #else
1178
1179 struct pnfs_ds_commit_info {
1180 };
1181
1182 #endif /* CONFIG_NFS_V4_1 */
1183
1184 struct nfs_page;
1185
1186 #define NFS_PAGEVEC_SIZE (8U)
1187
1188 struct nfs_page_array {
1189 struct page **pagevec;
1190 unsigned int npages; /* Max length of pagevec */
1191 struct page *page_array[NFS_PAGEVEC_SIZE];
1192 };
1193
1194 struct nfs_read_data {
1195 struct nfs_pgio_header *header;
1196 struct list_head list;
1197 struct rpc_task task;
1198 struct nfs_fattr fattr; /* fattr storage */
1199 struct nfs_readargs args;
1200 struct nfs_readres res;
1201 unsigned long timestamp; /* For lease renewal */
1202 int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1203 __u64 mds_offset;
1204 struct nfs_page_array pages;
1205 struct nfs_client *ds_clp; /* pNFS data server */
1206 };
1207
1208 /* used as flag bits in nfs_pgio_header */
1209 enum {
1210 NFS_IOHDR_ERROR = 0,
1211 NFS_IOHDR_EOF,
1212 NFS_IOHDR_REDO,
1213 NFS_IOHDR_NEED_COMMIT,
1214 NFS_IOHDR_NEED_RESCHED,
1215 };
1216
1217 struct nfs_pgio_header {
1218 struct inode *inode;
1219 struct rpc_cred *cred;
1220 struct list_head pages;
1221 struct list_head rpc_list;
1222 atomic_t refcnt;
1223 struct nfs_page *req;
1224 struct pnfs_layout_segment *lseg;
1225 loff_t io_start;
1226 const struct rpc_call_ops *mds_ops;
1227 void (*release) (struct nfs_pgio_header *hdr);
1228 const struct nfs_pgio_completion_ops *completion_ops;
1229 struct nfs_direct_req *dreq;
1230 spinlock_t lock;
1231 /* fields protected by lock */
1232 int pnfs_error;
1233 int error; /* merge with pnfs_error */
1234 unsigned long good_bytes; /* boundary of good data */
1235 unsigned long flags;
1236 };
1237
1238 struct nfs_read_header {
1239 struct nfs_pgio_header header;
1240 struct nfs_read_data rpc_data;
1241 };
1242
1243 struct nfs_write_data {
1244 struct nfs_pgio_header *header;
1245 struct list_head list;
1246 struct rpc_task task;
1247 struct nfs_fattr fattr;
1248 struct nfs_writeverf verf;
1249 struct nfs_writeargs args; /* argument struct */
1250 struct nfs_writeres res; /* result struct */
1251 unsigned long timestamp; /* For lease renewal */
1252 int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1253 __u64 mds_offset; /* Filelayout dense stripe */
1254 struct nfs_page_array pages;
1255 struct nfs_client *ds_clp; /* pNFS data server */
1256 };
1257
1258 struct nfs_write_header {
1259 struct nfs_pgio_header header;
1260 struct nfs_write_data rpc_data;
1261 };
1262
1263 struct nfs_mds_commit_info {
1264 atomic_t rpcs_out;
1265 unsigned long ncommit;
1266 struct list_head list;
1267 };
1268
1269 struct nfs_commit_data;
1270 struct nfs_inode;
1271 struct nfs_commit_completion_ops {
1272 void (*error_cleanup) (struct nfs_inode *nfsi);
1273 void (*completion) (struct nfs_commit_data *data);
1274 };
1275
1276 struct nfs_commit_info {
1277 spinlock_t *lock;
1278 struct nfs_mds_commit_info *mds;
1279 struct pnfs_ds_commit_info *ds;
1280 struct nfs_direct_req *dreq; /* O_DIRECT request */
1281 const struct nfs_commit_completion_ops *completion_ops;
1282 };
1283
1284 struct nfs_commit_data {
1285 struct rpc_task task;
1286 struct inode *inode;
1287 struct rpc_cred *cred;
1288 struct nfs_fattr fattr;
1289 struct nfs_writeverf verf;
1290 struct list_head pages; /* Coalesced requests we wish to flush */
1291 struct list_head list; /* lists of struct nfs_write_data */
1292 struct nfs_direct_req *dreq; /* O_DIRECT request */
1293 struct nfs_commitargs args; /* argument struct */
1294 struct nfs_commitres res; /* result struct */
1295 struct nfs_open_context *context;
1296 struct pnfs_layout_segment *lseg;
1297 struct nfs_client *ds_clp; /* pNFS data server */
1298 int ds_commit_index;
1299 const struct rpc_call_ops *mds_ops;
1300 const struct nfs_commit_completion_ops *completion_ops;
1301 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1302 };
1303
1304 struct nfs_pgio_completion_ops {
1305 void (*error_cleanup)(struct list_head *head);
1306 void (*init_hdr)(struct nfs_pgio_header *hdr);
1307 void (*completion)(struct nfs_pgio_header *hdr);
1308 };
1309
1310 struct nfs_unlinkdata {
1311 struct hlist_node list;
1312 struct nfs_removeargs args;
1313 struct nfs_removeres res;
1314 struct inode *dir;
1315 struct rpc_cred *cred;
1316 struct nfs_fattr dir_attr;
1317 };
1318
1319 struct nfs_renamedata {
1320 struct nfs_renameargs args;
1321 struct nfs_renameres res;
1322 struct rpc_cred *cred;
1323 struct inode *old_dir;
1324 struct dentry *old_dentry;
1325 struct nfs_fattr old_fattr;
1326 struct inode *new_dir;
1327 struct dentry *new_dentry;
1328 struct nfs_fattr new_fattr;
1329 };
1330
1331 struct nfs_access_entry;
1332 struct nfs_client;
1333 struct rpc_timeout;
1334
1335 /*
1336 * RPC procedure vector for NFSv2/NFSv3 demuxing
1337 */
1338 struct nfs_rpc_ops {
1339 u32 version; /* Protocol version */
1340 const struct dentry_operations *dentry_ops;
1341 const struct inode_operations *dir_inode_ops;
1342 const struct inode_operations *file_inode_ops;
1343 const struct file_operations *file_ops;
1344
1345 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1346 struct nfs_fsinfo *);
1347 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1348 struct nfs_fh *, struct nfs_fattr *);
1349 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1350 struct nfs_fattr *);
1351 int (*setattr) (struct dentry *, struct nfs_fattr *,
1352 struct iattr *);
1353 int (*lookup) (struct inode *, struct qstr *,
1354 struct nfs_fh *, struct nfs_fattr *);
1355 int (*access) (struct inode *, struct nfs_access_entry *);
1356 int (*readlink)(struct inode *, struct page *, unsigned int,
1357 unsigned int);
1358 int (*create) (struct inode *, struct dentry *,
1359 struct iattr *, int, struct nfs_open_context *);
1360 int (*remove) (struct inode *, struct qstr *);
1361 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1362 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1363 int (*unlink_done) (struct rpc_task *, struct inode *);
1364 int (*rename) (struct inode *, struct qstr *,
1365 struct inode *, struct qstr *);
1366 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1367 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1368 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1369 int (*link) (struct inode *, struct inode *, struct qstr *);
1370 int (*symlink) (struct inode *, struct dentry *, struct page *,
1371 unsigned int, struct iattr *);
1372 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1373 int (*rmdir) (struct inode *, struct qstr *);
1374 int (*readdir) (struct dentry *, struct rpc_cred *,
1375 u64, struct page **, unsigned int, int);
1376 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1377 dev_t);
1378 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1379 struct nfs_fsstat *);
1380 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1381 struct nfs_fsinfo *);
1382 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1383 struct nfs_pathconf *);
1384 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1385 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1386 void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
1387 void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1388 int (*read_done) (struct rpc_task *, struct nfs_read_data *);
1389 void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
1390 void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1391 int (*write_done) (struct rpc_task *, struct nfs_write_data *);
1392 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1393 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1394 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1395 int (*lock)(struct file *, int, struct file_lock *);
1396 int (*lock_check_bounds)(const struct file_lock *);
1397 void (*clear_acl_cache)(struct inode *);
1398 void (*close_context)(struct nfs_open_context *ctx, int);
1399 struct inode * (*open_context) (struct inode *dir,
1400 struct nfs_open_context *ctx,
1401 int open_flags,
1402 struct iattr *iattr);
1403 int (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1404 const char *, rpc_authflavor_t, int);
1405 };
1406
1407 /*
1408 * NFS_CALL(getattr, inode, (fattr));
1409 * into
1410 * NFS_PROTO(inode)->getattr(fattr);
1411 */
1412 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1413
1414 /*
1415 * Function vectors etc. for the NFS client
1416 */
1417 extern const struct nfs_rpc_ops nfs_v2_clientops;
1418 extern const struct nfs_rpc_ops nfs_v3_clientops;
1419 extern const struct nfs_rpc_ops nfs_v4_clientops;
1420 extern const struct rpc_version nfs_version2;
1421 extern const struct rpc_version nfs_version3;
1422 extern const struct rpc_version nfs_version4;
1423
1424 extern const struct rpc_version nfsacl_version3;
1425 extern const struct rpc_program nfsacl_program;
1426
1427 #endif
Linus' kernel tree