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NFS: Add memory barriers to the nfs_client->cl_cons_state initialisation
[deliverable/linux.git] / include / linux / nfs_xdr.h
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 struct nfs4_sequence_args seq_args;
544 };
545
546 struct nfs_removeres {
547 const struct nfs_server *server;
548 struct nfs_fattr *dir_attr;
549 struct nfs4_change_info cinfo;
550 struct nfs4_sequence_res seq_res;
551 };
552
553 /*
554 * Common arguments to the rename call
555 */
556 struct nfs_renameargs {
557 const struct nfs_fh *old_dir;
558 const struct nfs_fh *new_dir;
559 const struct qstr *old_name;
560 const struct qstr *new_name;
561 struct nfs4_sequence_args seq_args;
562 };
563
564 struct nfs_renameres {
565 const struct nfs_server *server;
566 struct nfs4_change_info old_cinfo;
567 struct nfs_fattr *old_fattr;
568 struct nfs4_change_info new_cinfo;
569 struct nfs_fattr *new_fattr;
570 struct nfs4_sequence_res seq_res;
571 };
572
573 /*
574 * Argument struct for decode_entry function
575 */
576 struct nfs_entry {
577 __u64 ino;
578 __u64 cookie,
579 prev_cookie;
580 const char * name;
581 unsigned int len;
582 int eof;
583 struct nfs_fh * fh;
584 struct nfs_fattr * fattr;
585 unsigned char d_type;
586 struct nfs_server * server;
587 };
588
589 /*
590 * The following types are for NFSv2 only.
591 */
592 struct nfs_sattrargs {
593 struct nfs_fh * fh;
594 struct iattr * sattr;
595 };
596
597 struct nfs_diropargs {
598 struct nfs_fh * fh;
599 const char * name;
600 unsigned int len;
601 };
602
603 struct nfs_createargs {
604 struct nfs_fh * fh;
605 const char * name;
606 unsigned int len;
607 struct iattr * sattr;
608 };
609
610 struct nfs_setattrargs {
611 struct nfs_fh * fh;
612 nfs4_stateid stateid;
613 struct iattr * iap;
614 const struct nfs_server * server; /* Needed for name mapping */
615 const u32 * bitmask;
616 struct nfs4_sequence_args seq_args;
617 };
618
619 struct nfs_setaclargs {
620 struct nfs_fh * fh;
621 size_t acl_len;
622 unsigned int acl_pgbase;
623 struct page ** acl_pages;
624 struct nfs4_sequence_args seq_args;
625 };
626
627 struct nfs_setaclres {
628 struct nfs4_sequence_res seq_res;
629 };
630
631 struct nfs_getaclargs {
632 struct nfs_fh * fh;
633 size_t acl_len;
634 unsigned int acl_pgbase;
635 struct page ** acl_pages;
636 struct nfs4_sequence_args seq_args;
637 };
638
639 /* getxattr ACL interface flags */
640 #define NFS4_ACL_LEN_REQUEST 0x0001 /* zero length getxattr buffer */
641 struct nfs_getaclres {
642 size_t acl_len;
643 size_t acl_data_offset;
644 int acl_flags;
645 struct page * acl_scratch;
646 struct nfs4_sequence_res seq_res;
647 };
648
649 struct nfs_setattrres {
650 struct nfs_fattr * fattr;
651 const struct nfs_server * server;
652 struct nfs4_sequence_res seq_res;
653 };
654
655 struct nfs_linkargs {
656 struct nfs_fh * fromfh;
657 struct nfs_fh * tofh;
658 const char * toname;
659 unsigned int tolen;
660 };
661
662 struct nfs_symlinkargs {
663 struct nfs_fh * fromfh;
664 const char * fromname;
665 unsigned int fromlen;
666 struct page ** pages;
667 unsigned int pathlen;
668 struct iattr * sattr;
669 };
670
671 struct nfs_readdirargs {
672 struct nfs_fh * fh;
673 __u32 cookie;
674 unsigned int count;
675 struct page ** pages;
676 };
677
678 struct nfs3_getaclargs {
679 struct nfs_fh * fh;
680 int mask;
681 struct page ** pages;
682 };
683
684 struct nfs3_setaclargs {
685 struct inode * inode;
686 int mask;
687 struct posix_acl * acl_access;
688 struct posix_acl * acl_default;
689 size_t len;
690 unsigned int npages;
691 struct page ** pages;
692 };
693
694 struct nfs_diropok {
695 struct nfs_fh * fh;
696 struct nfs_fattr * fattr;
697 };
698
699 struct nfs_readlinkargs {
700 struct nfs_fh * fh;
701 unsigned int pgbase;
702 unsigned int pglen;
703 struct page ** pages;
704 };
705
706 struct nfs3_sattrargs {
707 struct nfs_fh * fh;
708 struct iattr * sattr;
709 unsigned int guard;
710 struct timespec guardtime;
711 };
712
713 struct nfs3_diropargs {
714 struct nfs_fh * fh;
715 const char * name;
716 unsigned int len;
717 };
718
719 struct nfs3_accessargs {
720 struct nfs_fh * fh;
721 __u32 access;
722 };
723
724 struct nfs3_createargs {
725 struct nfs_fh * fh;
726 const char * name;
727 unsigned int len;
728 struct iattr * sattr;
729 enum nfs3_createmode createmode;
730 __be32 verifier[2];
731 };
732
733 struct nfs3_mkdirargs {
734 struct nfs_fh * fh;
735 const char * name;
736 unsigned int len;
737 struct iattr * sattr;
738 };
739
740 struct nfs3_symlinkargs {
741 struct nfs_fh * fromfh;
742 const char * fromname;
743 unsigned int fromlen;
744 struct page ** pages;
745 unsigned int pathlen;
746 struct iattr * sattr;
747 };
748
749 struct nfs3_mknodargs {
750 struct nfs_fh * fh;
751 const char * name;
752 unsigned int len;
753 enum nfs3_ftype type;
754 struct iattr * sattr;
755 dev_t rdev;
756 };
757
758 struct nfs3_linkargs {
759 struct nfs_fh * fromfh;
760 struct nfs_fh * tofh;
761 const char * toname;
762 unsigned int tolen;
763 };
764
765 struct nfs3_readdirargs {
766 struct nfs_fh * fh;
767 __u64 cookie;
768 __be32 verf[2];
769 int plus;
770 unsigned int count;
771 struct page ** pages;
772 };
773
774 struct nfs3_diropres {
775 struct nfs_fattr * dir_attr;
776 struct nfs_fh * fh;
777 struct nfs_fattr * fattr;
778 };
779
780 struct nfs3_accessres {
781 struct nfs_fattr * fattr;
782 __u32 access;
783 };
784
785 struct nfs3_readlinkargs {
786 struct nfs_fh * fh;
787 unsigned int pgbase;
788 unsigned int pglen;
789 struct page ** pages;
790 };
791
792 struct nfs3_linkres {
793 struct nfs_fattr * dir_attr;
794 struct nfs_fattr * fattr;
795 };
796
797 struct nfs3_readdirres {
798 struct nfs_fattr * dir_attr;
799 __be32 * verf;
800 int plus;
801 };
802
803 struct nfs3_getaclres {
804 struct nfs_fattr * fattr;
805 int mask;
806 unsigned int acl_access_count;
807 unsigned int acl_default_count;
808 struct posix_acl * acl_access;
809 struct posix_acl * acl_default;
810 };
811
812 #ifdef CONFIG_NFS_V4
813
814 typedef u64 clientid4;
815
816 struct nfs4_accessargs {
817 const struct nfs_fh * fh;
818 const u32 * bitmask;
819 u32 access;
820 struct nfs4_sequence_args seq_args;
821 };
822
823 struct nfs4_accessres {
824 const struct nfs_server * server;
825 struct nfs_fattr * fattr;
826 u32 supported;
827 u32 access;
828 struct nfs4_sequence_res seq_res;
829 };
830
831 struct nfs4_create_arg {
832 u32 ftype;
833 union {
834 struct {
835 struct page ** pages;
836 unsigned int len;
837 } symlink; /* NF4LNK */
838 struct {
839 u32 specdata1;
840 u32 specdata2;
841 } device; /* NF4BLK, NF4CHR */
842 } u;
843 const struct qstr * name;
844 const struct nfs_server * server;
845 const struct iattr * attrs;
846 const struct nfs_fh * dir_fh;
847 const u32 * bitmask;
848 struct nfs4_sequence_args seq_args;
849 };
850
851 struct nfs4_create_res {
852 const struct nfs_server * server;
853 struct nfs_fh * fh;
854 struct nfs_fattr * fattr;
855 struct nfs4_change_info dir_cinfo;
856 struct nfs4_sequence_res seq_res;
857 };
858
859 struct nfs4_fsinfo_arg {
860 const struct nfs_fh * fh;
861 const u32 * bitmask;
862 struct nfs4_sequence_args seq_args;
863 };
864
865 struct nfs4_fsinfo_res {
866 struct nfs_fsinfo *fsinfo;
867 struct nfs4_sequence_res seq_res;
868 };
869
870 struct nfs4_getattr_arg {
871 const struct nfs_fh * fh;
872 const u32 * bitmask;
873 struct nfs4_sequence_args seq_args;
874 };
875
876 struct nfs4_getattr_res {
877 const struct nfs_server * server;
878 struct nfs_fattr * fattr;
879 struct nfs4_sequence_res seq_res;
880 };
881
882 struct nfs4_link_arg {
883 const struct nfs_fh * fh;
884 const struct nfs_fh * dir_fh;
885 const struct qstr * name;
886 const u32 * bitmask;
887 struct nfs4_sequence_args seq_args;
888 };
889
890 struct nfs4_link_res {
891 const struct nfs_server * server;
892 struct nfs_fattr * fattr;
893 struct nfs4_change_info cinfo;
894 struct nfs_fattr * dir_attr;
895 struct nfs4_sequence_res seq_res;
896 };
897
898
899 struct nfs4_lookup_arg {
900 const struct nfs_fh * dir_fh;
901 const struct qstr * name;
902 const u32 * bitmask;
903 struct nfs4_sequence_args seq_args;
904 };
905
906 struct nfs4_lookup_res {
907 const struct nfs_server * server;
908 struct nfs_fattr * fattr;
909 struct nfs_fh * fh;
910 struct nfs4_sequence_res seq_res;
911 };
912
913 struct nfs4_lookup_root_arg {
914 const u32 * bitmask;
915 struct nfs4_sequence_args seq_args;
916 };
917
918 struct nfs4_pathconf_arg {
919 const struct nfs_fh * fh;
920 const u32 * bitmask;
921 struct nfs4_sequence_args seq_args;
922 };
923
924 struct nfs4_pathconf_res {
925 struct nfs_pathconf *pathconf;
926 struct nfs4_sequence_res seq_res;
927 };
928
929 struct nfs4_readdir_arg {
930 const struct nfs_fh * fh;
931 u64 cookie;
932 nfs4_verifier verifier;
933 u32 count;
934 struct page ** pages; /* zero-copy data */
935 unsigned int pgbase; /* zero-copy data */
936 const u32 * bitmask;
937 int plus;
938 struct nfs4_sequence_args seq_args;
939 };
940
941 struct nfs4_readdir_res {
942 nfs4_verifier verifier;
943 unsigned int pgbase;
944 struct nfs4_sequence_res seq_res;
945 };
946
947 struct nfs4_readlink {
948 const struct nfs_fh * fh;
949 unsigned int pgbase;
950 unsigned int pglen; /* zero-copy data */
951 struct page ** pages; /* zero-copy data */
952 struct nfs4_sequence_args seq_args;
953 };
954
955 struct nfs4_readlink_res {
956 struct nfs4_sequence_res seq_res;
957 };
958
959 #define NFS4_SETCLIENTID_NAMELEN (127)
960 struct nfs4_setclientid {
961 const nfs4_verifier * sc_verifier;
962 unsigned int sc_name_len;
963 char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
964 u32 sc_prog;
965 unsigned int sc_netid_len;
966 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
967 unsigned int sc_uaddr_len;
968 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
969 u32 sc_cb_ident;
970 };
971
972 struct nfs4_setclientid_res {
973 u64 clientid;
974 nfs4_verifier confirm;
975 };
976
977 struct nfs4_statfs_arg {
978 const struct nfs_fh * fh;
979 const u32 * bitmask;
980 struct nfs4_sequence_args seq_args;
981 };
982
983 struct nfs4_statfs_res {
984 struct nfs_fsstat *fsstat;
985 struct nfs4_sequence_res seq_res;
986 };
987
988 struct nfs4_server_caps_arg {
989 struct nfs_fh *fhandle;
990 struct nfs4_sequence_args seq_args;
991 };
992
993 struct nfs4_server_caps_res {
994 u32 attr_bitmask[3];
995 u32 acl_bitmask;
996 u32 has_links;
997 u32 has_symlinks;
998 u32 fh_expire_type;
999 struct nfs4_sequence_res seq_res;
1000 };
1001
1002 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1003 struct nfs4_pathname {
1004 unsigned int ncomponents;
1005 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1006 };
1007
1008 #define NFS4_FS_LOCATION_MAXSERVERS 10
1009 struct nfs4_fs_location {
1010 unsigned int nservers;
1011 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1012 struct nfs4_pathname rootpath;
1013 };
1014
1015 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1016 struct nfs4_fs_locations {
1017 struct nfs_fattr fattr;
1018 const struct nfs_server *server;
1019 struct nfs4_pathname fs_path;
1020 int nlocations;
1021 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1022 };
1023
1024 struct nfs4_fs_locations_arg {
1025 const struct nfs_fh *dir_fh;
1026 const struct qstr *name;
1027 struct page *page;
1028 const u32 *bitmask;
1029 struct nfs4_sequence_args seq_args;
1030 };
1031
1032 struct nfs4_fs_locations_res {
1033 struct nfs4_fs_locations *fs_locations;
1034 struct nfs4_sequence_res seq_res;
1035 };
1036
1037 struct nfs4_secinfo_oid {
1038 unsigned int len;
1039 char data[GSS_OID_MAX_LEN];
1040 };
1041
1042 struct nfs4_secinfo_gss {
1043 struct nfs4_secinfo_oid sec_oid4;
1044 unsigned int qop4;
1045 unsigned int service;
1046 };
1047
1048 struct nfs4_secinfo_flavor {
1049 unsigned int flavor;
1050 struct nfs4_secinfo_gss gss;
1051 };
1052
1053 struct nfs4_secinfo_flavors {
1054 unsigned int num_flavors;
1055 struct nfs4_secinfo_flavor flavors[0];
1056 };
1057
1058 struct nfs4_secinfo_arg {
1059 const struct nfs_fh *dir_fh;
1060 const struct qstr *name;
1061 struct nfs4_sequence_args seq_args;
1062 };
1063
1064 struct nfs4_secinfo_res {
1065 struct nfs4_secinfo_flavors *flavors;
1066 struct nfs4_sequence_res seq_res;
1067 };
1068
1069 #endif /* CONFIG_NFS_V4 */
1070
1071 struct nfstime4 {
1072 u64 seconds;
1073 u32 nseconds;
1074 };
1075
1076 #ifdef CONFIG_NFS_V4_1
1077
1078 struct pnfs_commit_bucket {
1079 struct list_head written;
1080 struct list_head committing;
1081 struct pnfs_layout_segment *wlseg;
1082 struct pnfs_layout_segment *clseg;
1083 };
1084
1085 struct pnfs_ds_commit_info {
1086 int nwritten;
1087 int ncommitting;
1088 int nbuckets;
1089 struct pnfs_commit_bucket *buckets;
1090 };
1091
1092 #define NFS4_EXCHANGE_ID_LEN (48)
1093 struct nfs41_exchange_id_args {
1094 struct nfs_client *client;
1095 nfs4_verifier *verifier;
1096 unsigned int id_len;
1097 char id[NFS4_EXCHANGE_ID_LEN];
1098 u32 flags;
1099 };
1100
1101 struct nfs41_server_owner {
1102 uint64_t minor_id;
1103 uint32_t major_id_sz;
1104 char major_id[NFS4_OPAQUE_LIMIT];
1105 };
1106
1107 struct nfs41_server_scope {
1108 uint32_t server_scope_sz;
1109 char server_scope[NFS4_OPAQUE_LIMIT];
1110 };
1111
1112 struct nfs41_impl_id {
1113 char domain[NFS4_OPAQUE_LIMIT + 1];
1114 char name[NFS4_OPAQUE_LIMIT + 1];
1115 struct nfstime4 date;
1116 };
1117
1118 struct nfs41_exchange_id_res {
1119 struct nfs_client *client;
1120 u32 flags;
1121 struct nfs41_server_owner *server_owner;
1122 struct nfs41_server_scope *server_scope;
1123 struct nfs41_impl_id *impl_id;
1124 };
1125
1126 struct nfs41_create_session_args {
1127 struct nfs_client *client;
1128 uint32_t flags;
1129 uint32_t cb_program;
1130 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1131 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1132 };
1133
1134 struct nfs41_create_session_res {
1135 struct nfs_client *client;
1136 };
1137
1138 struct nfs41_reclaim_complete_args {
1139 /* In the future extend to include curr_fh for use with migration */
1140 unsigned char one_fs:1;
1141 struct nfs4_sequence_args seq_args;
1142 };
1143
1144 struct nfs41_reclaim_complete_res {
1145 struct nfs4_sequence_res seq_res;
1146 };
1147
1148 #define SECINFO_STYLE_CURRENT_FH 0
1149 #define SECINFO_STYLE_PARENT 1
1150 struct nfs41_secinfo_no_name_args {
1151 int style;
1152 struct nfs4_sequence_args seq_args;
1153 };
1154
1155 struct nfs41_test_stateid_args {
1156 nfs4_stateid *stateid;
1157 struct nfs4_sequence_args seq_args;
1158 };
1159
1160 struct nfs41_test_stateid_res {
1161 unsigned int status;
1162 struct nfs4_sequence_res seq_res;
1163 };
1164
1165 struct nfs41_free_stateid_args {
1166 nfs4_stateid *stateid;
1167 struct nfs4_sequence_args seq_args;
1168 };
1169
1170 struct nfs41_free_stateid_res {
1171 unsigned int status;
1172 struct nfs4_sequence_res seq_res;
1173 };
1174
1175 #else
1176
1177 struct pnfs_ds_commit_info {
1178 };
1179
1180 #endif /* CONFIG_NFS_V4_1 */
1181
1182 struct nfs_page;
1183
1184 #define NFS_PAGEVEC_SIZE (8U)
1185
1186 struct nfs_page_array {
1187 struct page **pagevec;
1188 unsigned int npages; /* Max length of pagevec */
1189 struct page *page_array[NFS_PAGEVEC_SIZE];
1190 };
1191
1192 struct nfs_read_data {
1193 struct nfs_pgio_header *header;
1194 struct list_head list;
1195 struct rpc_task task;
1196 struct nfs_fattr fattr; /* fattr storage */
1197 struct nfs_readargs args;
1198 struct nfs_readres res;
1199 unsigned long timestamp; /* For lease renewal */
1200 int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1201 __u64 mds_offset;
1202 struct nfs_page_array pages;
1203 struct nfs_client *ds_clp; /* pNFS data server */
1204 };
1205
1206 /* used as flag bits in nfs_pgio_header */
1207 enum {
1208 NFS_IOHDR_ERROR = 0,
1209 NFS_IOHDR_EOF,
1210 NFS_IOHDR_REDO,
1211 NFS_IOHDR_NEED_COMMIT,
1212 NFS_IOHDR_NEED_RESCHED,
1213 };
1214
1215 struct nfs_pgio_header {
1216 struct inode *inode;
1217 struct rpc_cred *cred;
1218 struct list_head pages;
1219 struct list_head rpc_list;
1220 atomic_t refcnt;
1221 struct nfs_page *req;
1222 struct pnfs_layout_segment *lseg;
1223 loff_t io_start;
1224 const struct rpc_call_ops *mds_ops;
1225 void (*release) (struct nfs_pgio_header *hdr);
1226 const struct nfs_pgio_completion_ops *completion_ops;
1227 struct nfs_direct_req *dreq;
1228 spinlock_t lock;
1229 /* fields protected by lock */
1230 int pnfs_error;
1231 int error; /* merge with pnfs_error */
1232 unsigned long good_bytes; /* boundary of good data */
1233 unsigned long flags;
1234 };
1235
1236 struct nfs_read_header {
1237 struct nfs_pgio_header header;
1238 struct nfs_read_data rpc_data;
1239 };
1240
1241 struct nfs_write_data {
1242 struct nfs_pgio_header *header;
1243 struct list_head list;
1244 struct rpc_task task;
1245 struct nfs_fattr fattr;
1246 struct nfs_writeverf verf;
1247 struct nfs_writeargs args; /* argument struct */
1248 struct nfs_writeres res; /* result struct */
1249 unsigned long timestamp; /* For lease renewal */
1250 int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1251 __u64 mds_offset; /* Filelayout dense stripe */
1252 struct nfs_page_array pages;
1253 struct nfs_client *ds_clp; /* pNFS data server */
1254 };
1255
1256 struct nfs_write_header {
1257 struct nfs_pgio_header header;
1258 struct nfs_write_data rpc_data;
1259 };
1260
1261 struct nfs_mds_commit_info {
1262 atomic_t rpcs_out;
1263 unsigned long ncommit;
1264 struct list_head list;
1265 };
1266
1267 struct nfs_commit_data;
1268 struct nfs_inode;
1269 struct nfs_commit_completion_ops {
1270 void (*error_cleanup) (struct nfs_inode *nfsi);
1271 void (*completion) (struct nfs_commit_data *data);
1272 };
1273
1274 struct nfs_commit_info {
1275 spinlock_t *lock;
1276 struct nfs_mds_commit_info *mds;
1277 struct pnfs_ds_commit_info *ds;
1278 struct nfs_direct_req *dreq; /* O_DIRECT request */
1279 const struct nfs_commit_completion_ops *completion_ops;
1280 };
1281
1282 struct nfs_commit_data {
1283 struct rpc_task task;
1284 struct inode *inode;
1285 struct rpc_cred *cred;
1286 struct nfs_fattr fattr;
1287 struct nfs_writeverf verf;
1288 struct list_head pages; /* Coalesced requests we wish to flush */
1289 struct list_head list; /* lists of struct nfs_write_data */
1290 struct nfs_direct_req *dreq; /* O_DIRECT request */
1291 struct nfs_commitargs args; /* argument struct */
1292 struct nfs_commitres res; /* result struct */
1293 struct nfs_open_context *context;
1294 struct pnfs_layout_segment *lseg;
1295 struct nfs_client *ds_clp; /* pNFS data server */
1296 int ds_commit_index;
1297 const struct rpc_call_ops *mds_ops;
1298 const struct nfs_commit_completion_ops *completion_ops;
1299 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1300 };
1301
1302 struct nfs_pgio_completion_ops {
1303 void (*error_cleanup)(struct list_head *head);
1304 void (*init_hdr)(struct nfs_pgio_header *hdr);
1305 void (*completion)(struct nfs_pgio_header *hdr);
1306 };
1307
1308 struct nfs_unlinkdata {
1309 struct hlist_node list;
1310 struct nfs_removeargs args;
1311 struct nfs_removeres res;
1312 struct inode *dir;
1313 struct rpc_cred *cred;
1314 struct nfs_fattr dir_attr;
1315 };
1316
1317 struct nfs_renamedata {
1318 struct nfs_renameargs args;
1319 struct nfs_renameres res;
1320 struct rpc_cred *cred;
1321 struct inode *old_dir;
1322 struct dentry *old_dentry;
1323 struct nfs_fattr old_fattr;
1324 struct inode *new_dir;
1325 struct dentry *new_dentry;
1326 struct nfs_fattr new_fattr;
1327 };
1328
1329 struct nfs_access_entry;
1330 struct nfs_client;
1331 struct rpc_timeout;
1332
1333 /*
1334 * RPC procedure vector for NFSv2/NFSv3 demuxing
1335 */
1336 struct nfs_rpc_ops {
1337 u32 version; /* Protocol version */
1338 const struct dentry_operations *dentry_ops;
1339 const struct inode_operations *dir_inode_ops;
1340 const struct inode_operations *file_inode_ops;
1341 const struct file_operations *file_ops;
1342
1343 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1344 struct nfs_fsinfo *);
1345 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1346 struct nfs_fh *, struct nfs_fattr *);
1347 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1348 struct nfs_fattr *);
1349 int (*setattr) (struct dentry *, struct nfs_fattr *,
1350 struct iattr *);
1351 int (*lookup) (struct inode *, struct qstr *,
1352 struct nfs_fh *, struct nfs_fattr *);
1353 int (*access) (struct inode *, struct nfs_access_entry *);
1354 int (*readlink)(struct inode *, struct page *, unsigned int,
1355 unsigned int);
1356 int (*create) (struct inode *, struct dentry *,
1357 struct iattr *, int, struct nfs_open_context *);
1358 int (*remove) (struct inode *, struct qstr *);
1359 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1360 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1361 int (*unlink_done) (struct rpc_task *, struct inode *);
1362 int (*rename) (struct inode *, struct qstr *,
1363 struct inode *, struct qstr *);
1364 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1365 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1366 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1367 int (*link) (struct inode *, struct inode *, struct qstr *);
1368 int (*symlink) (struct inode *, struct dentry *, struct page *,
1369 unsigned int, struct iattr *);
1370 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1371 int (*rmdir) (struct inode *, struct qstr *);
1372 int (*readdir) (struct dentry *, struct rpc_cred *,
1373 u64, struct page **, unsigned int, int);
1374 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1375 dev_t);
1376 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1377 struct nfs_fsstat *);
1378 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1379 struct nfs_fsinfo *);
1380 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1381 struct nfs_pathconf *);
1382 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1383 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1384 void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
1385 void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1386 int (*read_done) (struct rpc_task *, struct nfs_read_data *);
1387 void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
1388 void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1389 int (*write_done) (struct rpc_task *, struct nfs_write_data *);
1390 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1391 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1392 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1393 int (*lock)(struct file *, int, struct file_lock *);
1394 int (*lock_check_bounds)(const struct file_lock *);
1395 void (*clear_acl_cache)(struct inode *);
1396 void (*close_context)(struct nfs_open_context *ctx, int);
1397 struct inode * (*open_context) (struct inode *dir,
1398 struct nfs_open_context *ctx,
1399 int open_flags,
1400 struct iattr *iattr);
1401 struct nfs_client *
1402 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1403 const char *, rpc_authflavor_t);
1404 };
1405
1406 /*
1407 * NFS_CALL(getattr, inode, (fattr));
1408 * into
1409 * NFS_PROTO(inode)->getattr(fattr);
1410 */
1411 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1412
1413 /*
1414 * Function vectors etc. for the NFS client
1415 */
1416 extern const struct nfs_rpc_ops nfs_v2_clientops;
1417 extern const struct nfs_rpc_ops nfs_v3_clientops;
1418 extern const struct nfs_rpc_ops nfs_v4_clientops;
1419 extern const struct rpc_version nfs_version2;
1420 extern const struct rpc_version nfs_version3;
1421 extern const struct rpc_version nfs_version4;
1422
1423 extern const struct rpc_version nfsacl_version3;
1424 extern const struct rpc_program nfsacl_program;
1425
1426 #endif
Linux kernel - Deliverables
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