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mm/vmscan: replace zone_nr_lru_pages() with get_lruvec_size()
[linux-2.6/btrfs-unstable.git] / include / linux / nfs_xdr.h
blobd1a7bf51c326dc7f103aae60874a667f3307b373
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 nfs4_threshold {
39 __u32 bm;
40 __u32 l_type;
41 __u64 rd_sz;
42 __u64 wr_sz;
43 __u64 rd_io_sz;
44 __u64 wr_io_sz;
45 };
46
47 struct nfs_fattr {
48 unsigned int valid; /* which fields are valid */
49 umode_t mode;
50 __u32 nlink;
51 __u32 uid;
52 __u32 gid;
53 dev_t rdev;
54 __u64 size;
55 union {
56 struct {
57 __u32 blocksize;
58 __u32 blocks;
59 } nfs2;
60 struct {
61 __u64 used;
62 } nfs3;
63 } du;
64 struct nfs_fsid fsid;
65 __u64 fileid;
66 __u64 mounted_on_fileid;
67 struct timespec atime;
68 struct timespec mtime;
69 struct timespec ctime;
70 __u64 change_attr; /* NFSv4 change attribute */
71 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */
72 __u64 pre_size; /* pre_op_attr.size */
73 struct timespec pre_mtime; /* pre_op_attr.mtime */
74 struct timespec pre_ctime; /* pre_op_attr.ctime */
75 unsigned long time_start;
76 unsigned long gencount;
77 struct nfs4_string *owner_name;
78 struct nfs4_string *group_name;
79 struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */
80 };
81
82 #define NFS_ATTR_FATTR_TYPE (1U << 0)
83 #define NFS_ATTR_FATTR_MODE (1U << 1)
84 #define NFS_ATTR_FATTR_NLINK (1U << 2)
85 #define NFS_ATTR_FATTR_OWNER (1U << 3)
86 #define NFS_ATTR_FATTR_GROUP (1U << 4)
87 #define NFS_ATTR_FATTR_RDEV (1U << 5)
88 #define NFS_ATTR_FATTR_SIZE (1U << 6)
89 #define NFS_ATTR_FATTR_PRESIZE (1U << 7)
90 #define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
91 #define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
92 #define NFS_ATTR_FATTR_FSID (1U << 10)
93 #define NFS_ATTR_FATTR_FILEID (1U << 11)
94 #define NFS_ATTR_FATTR_ATIME (1U << 12)
95 #define NFS_ATTR_FATTR_MTIME (1U << 13)
96 #define NFS_ATTR_FATTR_CTIME (1U << 14)
97 #define NFS_ATTR_FATTR_PREMTIME (1U << 15)
98 #define NFS_ATTR_FATTR_PRECTIME (1U << 16)
99 #define NFS_ATTR_FATTR_CHANGE (1U << 17)
100 #define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
101 #define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19)
102 #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20)
103 #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21)
104 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
105 #define NFS_ATTR_FATTR_OWNER_NAME (1U << 23)
106 #define NFS_ATTR_FATTR_GROUP_NAME (1U << 24)
107
108 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
109 | NFS_ATTR_FATTR_MODE \
110 | NFS_ATTR_FATTR_NLINK \
111 | NFS_ATTR_FATTR_OWNER \
112 | NFS_ATTR_FATTR_GROUP \
113 | NFS_ATTR_FATTR_RDEV \
114 | NFS_ATTR_FATTR_SIZE \
115 | NFS_ATTR_FATTR_FSID \
116 | NFS_ATTR_FATTR_FILEID \
117 | NFS_ATTR_FATTR_ATIME \
118 | NFS_ATTR_FATTR_MTIME \
119 | NFS_ATTR_FATTR_CTIME \
120 | NFS_ATTR_FATTR_CHANGE)
121 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
122 | NFS_ATTR_FATTR_BLOCKS_USED)
123 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
124 | NFS_ATTR_FATTR_SPACE_USED)
125 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
126 | NFS_ATTR_FATTR_SPACE_USED)
127
128 /*
129 * Info on the file system
130 */
131 struct nfs_fsinfo {
132 struct nfs_fattr *fattr; /* Post-op attributes */
133 __u32 rtmax; /* max. read transfer size */
134 __u32 rtpref; /* pref. read transfer size */
135 __u32 rtmult; /* reads should be multiple of this */
136 __u32 wtmax; /* max. write transfer size */
137 __u32 wtpref; /* pref. write transfer size */
138 __u32 wtmult; /* writes should be multiple of this */
139 __u32 dtpref; /* pref. readdir transfer size */
140 __u64 maxfilesize;
141 struct timespec time_delta; /* server time granularity */
142 __u32 lease_time; /* in seconds */
143 __u32 layouttype; /* supported pnfs layout driver */
144 __u32 blksize; /* preferred pnfs io block size */
145 };
146
147 struct nfs_fsstat {
148 struct nfs_fattr *fattr; /* Post-op attributes */
149 __u64 tbytes; /* total size in bytes */
150 __u64 fbytes; /* # of free bytes */
151 __u64 abytes; /* # of bytes available to user */
152 __u64 tfiles; /* # of files */
153 __u64 ffiles; /* # of free files */
154 __u64 afiles; /* # of files available to user */
155 };
156
157 struct nfs2_fsstat {
158 __u32 tsize; /* Server transfer size */
159 __u32 bsize; /* Filesystem block size */
160 __u32 blocks; /* No. of "bsize" blocks on filesystem */
161 __u32 bfree; /* No. of free "bsize" blocks */
162 __u32 bavail; /* No. of available "bsize" blocks */
163 };
164
165 struct nfs_pathconf {
166 struct nfs_fattr *fattr; /* Post-op attributes */
167 __u32 max_link; /* max # of hard links */
168 __u32 max_namelen; /* max name length */
169 };
170
171 struct nfs4_change_info {
172 u32 atomic;
173 u64 before;
174 u64 after;
175 };
176
177 struct nfs_seqid;
178
179 /* nfs41 sessions channel attributes */
180 struct nfs4_channel_attrs {
181 u32 max_rqst_sz;
182 u32 max_resp_sz;
183 u32 max_resp_sz_cached;
184 u32 max_ops;
185 u32 max_reqs;
186 };
187
188 /* nfs41 sessions slot seqid */
189 struct nfs4_slot {
190 u32 seq_nr;
191 };
192
193 struct nfs4_sequence_args {
194 struct nfs4_session *sa_session;
195 u32 sa_slotid;
196 u8 sa_cache_this;
197 };
198
199 struct nfs4_sequence_res {
200 struct nfs4_session *sr_session;
201 struct nfs4_slot *sr_slot; /* slot used to send request */
202 int sr_status; /* sequence operation status */
203 unsigned long sr_renewal_time;
204 u32 sr_status_flags;
205 };
206
207 struct nfs4_get_lease_time_args {
208 struct nfs4_sequence_args la_seq_args;
209 };
210
211 struct nfs4_get_lease_time_res {
212 struct nfs_fsinfo *lr_fsinfo;
213 struct nfs4_sequence_res lr_seq_res;
214 };
215
216 #define PNFS_LAYOUT_MAXSIZE 4096
217
218 struct nfs4_layoutdriver_data {
219 struct page **pages;
220 __u32 pglen;
221 __u32 len;
222 };
223
224 struct pnfs_layout_range {
225 u32 iomode;
226 u64 offset;
227 u64 length;
228 };
229
230 struct nfs4_layoutget_args {
231 __u32 type;
232 struct pnfs_layout_range range;
233 __u64 minlength;
234 __u32 maxcount;
235 struct inode *inode;
236 struct nfs_open_context *ctx;
237 struct nfs4_sequence_args seq_args;
238 nfs4_stateid stateid;
239 struct nfs4_layoutdriver_data layout;
240 };
241
242 struct nfs4_layoutget_res {
243 __u32 return_on_close;
244 struct pnfs_layout_range range;
245 __u32 type;
246 nfs4_stateid stateid;
247 struct nfs4_sequence_res seq_res;
248 struct nfs4_layoutdriver_data *layoutp;
249 };
250
251 struct nfs4_layoutget {
252 struct nfs4_layoutget_args args;
253 struct nfs4_layoutget_res res;
254 struct pnfs_layout_segment **lsegpp;
255 gfp_t gfp_flags;
256 };
257
258 struct nfs4_getdevicelist_args {
259 const struct nfs_fh *fh;
260 u32 layoutclass;
261 struct nfs4_sequence_args seq_args;
262 };
263
264 struct nfs4_getdevicelist_res {
265 struct pnfs_devicelist *devlist;
266 struct nfs4_sequence_res seq_res;
267 };
268
269 struct nfs4_getdeviceinfo_args {
270 struct pnfs_device *pdev;
271 struct nfs4_sequence_args seq_args;
272 };
273
274 struct nfs4_getdeviceinfo_res {
275 struct pnfs_device *pdev;
276 struct nfs4_sequence_res seq_res;
277 };
278
279 struct nfs4_layoutcommit_args {
280 nfs4_stateid stateid;
281 __u64 lastbytewritten;
282 struct inode *inode;
283 const u32 *bitmask;
284 struct nfs4_sequence_args seq_args;
285 };
286
287 struct nfs4_layoutcommit_res {
288 struct nfs_fattr *fattr;
289 const struct nfs_server *server;
290 struct nfs4_sequence_res seq_res;
291 int status;
292 };
293
294 struct nfs4_layoutcommit_data {
295 struct rpc_task task;
296 struct nfs_fattr fattr;
297 struct list_head lseg_list;
298 struct rpc_cred *cred;
299 struct nfs4_layoutcommit_args args;
300 struct nfs4_layoutcommit_res res;
301 };
302
303 struct nfs4_layoutreturn_args {
304 struct pnfs_layout_hdr *layout;
305 struct inode *inode;
306 nfs4_stateid stateid;
307 __u32 layout_type;
308 struct nfs4_sequence_args seq_args;
309 };
310
311 struct nfs4_layoutreturn_res {
312 struct nfs4_sequence_res seq_res;
313 u32 lrs_present;
314 nfs4_stateid stateid;
315 };
316
317 struct nfs4_layoutreturn {
318 struct nfs4_layoutreturn_args args;
319 struct nfs4_layoutreturn_res res;
320 struct rpc_cred *cred;
321 struct nfs_client *clp;
322 int rpc_status;
323 };
324
325 struct stateowner_id {
326 __u64 create_time;
327 __u32 uniquifier;
328 };
329
330 /*
331 * Arguments to the open call.
332 */
333 struct nfs_openargs {
334 const struct nfs_fh * fh;
335 struct nfs_seqid * seqid;
336 int open_flags;
337 fmode_t fmode;
338 __u64 clientid;
339 struct stateowner_id id;
340 union {
341 struct {
342 struct iattr * attrs; /* UNCHECKED, GUARDED */
343 nfs4_verifier verifier; /* EXCLUSIVE */
344 };
345 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
346 fmode_t delegation_type; /* CLAIM_PREVIOUS */
347 } u;
348 const struct qstr * name;
349 const struct nfs_server *server; /* Needed for ID mapping */
350 const u32 * bitmask;
351 __u32 claim;
352 struct nfs4_sequence_args seq_args;
353 };
354
355 struct nfs_openres {
356 nfs4_stateid stateid;
357 struct nfs_fh fh;
358 struct nfs4_change_info cinfo;
359 __u32 rflags;
360 struct nfs_fattr * f_attr;
361 struct nfs_seqid * seqid;
362 const struct nfs_server *server;
363 fmode_t delegation_type;
364 nfs4_stateid delegation;
365 __u32 do_recall;
366 __u64 maxsize;
367 __u32 attrset[NFS4_BITMAP_SIZE];
368 struct nfs4_string *owner;
369 struct nfs4_string *group_owner;
370 struct nfs4_sequence_res seq_res;
371 };
372
373 /*
374 * Arguments to the open_confirm call.
375 */
376 struct nfs_open_confirmargs {
377 const struct nfs_fh * fh;
378 nfs4_stateid * stateid;
379 struct nfs_seqid * seqid;
380 };
381
382 struct nfs_open_confirmres {
383 nfs4_stateid stateid;
384 struct nfs_seqid * seqid;
385 };
386
387 /*
388 * Arguments to the close call.
389 */
390 struct nfs_closeargs {
391 struct nfs_fh * fh;
392 nfs4_stateid * stateid;
393 struct nfs_seqid * seqid;
394 fmode_t fmode;
395 const u32 * bitmask;
396 struct nfs4_sequence_args seq_args;
397 };
398
399 struct nfs_closeres {
400 nfs4_stateid stateid;
401 struct nfs_fattr * fattr;
402 struct nfs_seqid * seqid;
403 const struct nfs_server *server;
404 struct nfs4_sequence_res seq_res;
405 };
406 /*
407 * * Arguments to the lock,lockt, and locku call.
408 * */
409 struct nfs_lowner {
410 __u64 clientid;
411 __u64 id;
412 dev_t s_dev;
413 };
414
415 struct nfs_lock_args {
416 struct nfs_fh * fh;
417 struct file_lock * fl;
418 struct nfs_seqid * lock_seqid;
419 nfs4_stateid * lock_stateid;
420 struct nfs_seqid * open_seqid;
421 nfs4_stateid * open_stateid;
422 struct nfs_lowner lock_owner;
423 unsigned char block : 1;
424 unsigned char reclaim : 1;
425 unsigned char new_lock_owner : 1;
426 struct nfs4_sequence_args seq_args;
427 };
428
429 struct nfs_lock_res {
430 nfs4_stateid stateid;
431 struct nfs_seqid * lock_seqid;
432 struct nfs_seqid * open_seqid;
433 struct nfs4_sequence_res seq_res;
434 };
435
436 struct nfs_locku_args {
437 struct nfs_fh * fh;
438 struct file_lock * fl;
439 struct nfs_seqid * seqid;
440 nfs4_stateid * stateid;
441 struct nfs4_sequence_args seq_args;
442 };
443
444 struct nfs_locku_res {
445 nfs4_stateid stateid;
446 struct nfs_seqid * seqid;
447 struct nfs4_sequence_res seq_res;
448 };
449
450 struct nfs_lockt_args {
451 struct nfs_fh * fh;
452 struct file_lock * fl;
453 struct nfs_lowner lock_owner;
454 struct nfs4_sequence_args seq_args;
455 };
456
457 struct nfs_lockt_res {
458 struct file_lock * denied; /* LOCK, LOCKT failed */
459 struct nfs4_sequence_res seq_res;
460 };
461
462 struct nfs_release_lockowner_args {
463 struct nfs_lowner lock_owner;
464 };
465
466 struct nfs4_delegreturnargs {
467 const struct nfs_fh *fhandle;
468 const nfs4_stateid *stateid;
469 const u32 * bitmask;
470 struct nfs4_sequence_args seq_args;
471 };
472
473 struct nfs4_delegreturnres {
474 struct nfs_fattr * fattr;
475 const struct nfs_server *server;
476 struct nfs4_sequence_res seq_res;
477 };
478
479 /*
480 * Arguments to the read call.
481 */
482 struct nfs_readargs {
483 struct nfs_fh * fh;
484 struct nfs_open_context *context;
485 struct nfs_lock_context *lock_context;
486 __u64 offset;
487 __u32 count;
488 unsigned int pgbase;
489 struct page ** pages;
490 struct nfs4_sequence_args seq_args;
491 };
492
493 struct nfs_readres {
494 struct nfs_fattr * fattr;
495 __u32 count;
496 int eof;
497 struct nfs4_sequence_res seq_res;
498 };
499
500 /*
501 * Arguments to the write call.
502 */
503 struct nfs_writeargs {
504 struct nfs_fh * fh;
505 struct nfs_open_context *context;
506 struct nfs_lock_context *lock_context;
507 __u64 offset;
508 __u32 count;
509 enum nfs3_stable_how stable;
510 unsigned int pgbase;
511 struct page ** pages;
512 const u32 * bitmask;
513 struct nfs4_sequence_args seq_args;
514 };
515
516 struct nfs_writeverf {
517 enum nfs3_stable_how committed;
518 __be32 verifier[2];
519 };
520
521 struct nfs_writeres {
522 struct nfs_fattr * fattr;
523 struct nfs_writeverf * verf;
524 __u32 count;
525 const struct nfs_server *server;
526 struct nfs4_sequence_res seq_res;
527 };
528
529 /*
530 * Arguments to the commit call.
531 */
532 struct nfs_commitargs {
533 struct nfs_fh *fh;
534 __u64 offset;
535 __u32 count;
536 const u32 *bitmask;
537 struct nfs4_sequence_args seq_args;
538 };
539
540 struct nfs_commitres {
541 struct nfs_fattr *fattr;
542 struct nfs_writeverf *verf;
543 const struct nfs_server *server;
544 struct nfs4_sequence_res seq_res;
545 };
546
547 /*
548 * Common arguments to the unlink call
549 */
550 struct nfs_removeargs {
551 const struct nfs_fh *fh;
552 struct qstr name;
553 struct nfs4_sequence_args seq_args;
554 };
555
556 struct nfs_removeres {
557 const struct nfs_server *server;
558 struct nfs_fattr *dir_attr;
559 struct nfs4_change_info cinfo;
560 struct nfs4_sequence_res seq_res;
561 };
562
563 /*
564 * Common arguments to the rename call
565 */
566 struct nfs_renameargs {
567 const struct nfs_fh *old_dir;
568 const struct nfs_fh *new_dir;
569 const struct qstr *old_name;
570 const struct qstr *new_name;
571 struct nfs4_sequence_args seq_args;
572 };
573
574 struct nfs_renameres {
575 const struct nfs_server *server;
576 struct nfs4_change_info old_cinfo;
577 struct nfs_fattr *old_fattr;
578 struct nfs4_change_info new_cinfo;
579 struct nfs_fattr *new_fattr;
580 struct nfs4_sequence_res seq_res;
581 };
582
583 /*
584 * Argument struct for decode_entry function
585 */
586 struct nfs_entry {
587 __u64 ino;
588 __u64 cookie,
589 prev_cookie;
590 const char * name;
591 unsigned int len;
592 int eof;
593 struct nfs_fh * fh;
594 struct nfs_fattr * fattr;
595 unsigned char d_type;
596 struct nfs_server * server;
597 };
598
599 /*
600 * The following types are for NFSv2 only.
601 */
602 struct nfs_sattrargs {
603 struct nfs_fh * fh;
604 struct iattr * sattr;
605 };
606
607 struct nfs_diropargs {
608 struct nfs_fh * fh;
609 const char * name;
610 unsigned int len;
611 };
612
613 struct nfs_createargs {
614 struct nfs_fh * fh;
615 const char * name;
616 unsigned int len;
617 struct iattr * sattr;
618 };
619
620 struct nfs_setattrargs {
621 struct nfs_fh * fh;
622 nfs4_stateid stateid;
623 struct iattr * iap;
624 const struct nfs_server * server; /* Needed for name mapping */
625 const u32 * bitmask;
626 struct nfs4_sequence_args seq_args;
627 };
628
629 struct nfs_setaclargs {
630 struct nfs_fh * fh;
631 size_t acl_len;
632 unsigned int acl_pgbase;
633 struct page ** acl_pages;
634 struct nfs4_sequence_args seq_args;
635 };
636
637 struct nfs_setaclres {
638 struct nfs4_sequence_res seq_res;
639 };
640
641 struct nfs_getaclargs {
642 struct nfs_fh * fh;
643 size_t acl_len;
644 unsigned int acl_pgbase;
645 struct page ** acl_pages;
646 struct nfs4_sequence_args seq_args;
647 };
648
649 /* getxattr ACL interface flags */
650 #define NFS4_ACL_LEN_REQUEST 0x0001 /* zero length getxattr buffer */
651 struct nfs_getaclres {
652 size_t acl_len;
653 size_t acl_data_offset;
654 int acl_flags;
655 struct page * acl_scratch;
656 struct nfs4_sequence_res seq_res;
657 };
658
659 struct nfs_setattrres {
660 struct nfs_fattr * fattr;
661 const struct nfs_server * server;
662 struct nfs4_sequence_res seq_res;
663 };
664
665 struct nfs_linkargs {
666 struct nfs_fh * fromfh;
667 struct nfs_fh * tofh;
668 const char * toname;
669 unsigned int tolen;
670 };
671
672 struct nfs_symlinkargs {
673 struct nfs_fh * fromfh;
674 const char * fromname;
675 unsigned int fromlen;
676 struct page ** pages;
677 unsigned int pathlen;
678 struct iattr * sattr;
679 };
680
681 struct nfs_readdirargs {
682 struct nfs_fh * fh;
683 __u32 cookie;
684 unsigned int count;
685 struct page ** pages;
686 };
687
688 struct nfs3_getaclargs {
689 struct nfs_fh * fh;
690 int mask;
691 struct page ** pages;
692 };
693
694 struct nfs3_setaclargs {
695 struct inode * inode;
696 int mask;
697 struct posix_acl * acl_access;
698 struct posix_acl * acl_default;
699 size_t len;
700 unsigned int npages;
701 struct page ** pages;
702 };
703
704 struct nfs_diropok {
705 struct nfs_fh * fh;
706 struct nfs_fattr * fattr;
707 };
708
709 struct nfs_readlinkargs {
710 struct nfs_fh * fh;
711 unsigned int pgbase;
712 unsigned int pglen;
713 struct page ** pages;
714 };
715
716 struct nfs3_sattrargs {
717 struct nfs_fh * fh;
718 struct iattr * sattr;
719 unsigned int guard;
720 struct timespec guardtime;
721 };
722
723 struct nfs3_diropargs {
724 struct nfs_fh * fh;
725 const char * name;
726 unsigned int len;
727 };
728
729 struct nfs3_accessargs {
730 struct nfs_fh * fh;
731 __u32 access;
732 };
733
734 struct nfs3_createargs {
735 struct nfs_fh * fh;
736 const char * name;
737 unsigned int len;
738 struct iattr * sattr;
739 enum nfs3_createmode createmode;
740 __be32 verifier[2];
741 };
742
743 struct nfs3_mkdirargs {
744 struct nfs_fh * fh;
745 const char * name;
746 unsigned int len;
747 struct iattr * sattr;
748 };
749
750 struct nfs3_symlinkargs {
751 struct nfs_fh * fromfh;
752 const char * fromname;
753 unsigned int fromlen;
754 struct page ** pages;
755 unsigned int pathlen;
756 struct iattr * sattr;
757 };
758
759 struct nfs3_mknodargs {
760 struct nfs_fh * fh;
761 const char * name;
762 unsigned int len;
763 enum nfs3_ftype type;
764 struct iattr * sattr;
765 dev_t rdev;
766 };
767
768 struct nfs3_linkargs {
769 struct nfs_fh * fromfh;
770 struct nfs_fh * tofh;
771 const char * toname;
772 unsigned int tolen;
773 };
774
775 struct nfs3_readdirargs {
776 struct nfs_fh * fh;
777 __u64 cookie;
778 __be32 verf[2];
779 int plus;
780 unsigned int count;
781 struct page ** pages;
782 };
783
784 struct nfs3_diropres {
785 struct nfs_fattr * dir_attr;
786 struct nfs_fh * fh;
787 struct nfs_fattr * fattr;
788 };
789
790 struct nfs3_accessres {
791 struct nfs_fattr * fattr;
792 __u32 access;
793 };
794
795 struct nfs3_readlinkargs {
796 struct nfs_fh * fh;
797 unsigned int pgbase;
798 unsigned int pglen;
799 struct page ** pages;
800 };
801
802 struct nfs3_linkres {
803 struct nfs_fattr * dir_attr;
804 struct nfs_fattr * fattr;
805 };
806
807 struct nfs3_readdirres {
808 struct nfs_fattr * dir_attr;
809 __be32 * verf;
810 int plus;
811 };
812
813 struct nfs3_getaclres {
814 struct nfs_fattr * fattr;
815 int mask;
816 unsigned int acl_access_count;
817 unsigned int acl_default_count;
818 struct posix_acl * acl_access;
819 struct posix_acl * acl_default;
820 };
821
822 #ifdef CONFIG_NFS_V4
823
824 typedef u64 clientid4;
825
826 struct nfs4_accessargs {
827 const struct nfs_fh * fh;
828 const u32 * bitmask;
829 u32 access;
830 struct nfs4_sequence_args seq_args;
831 };
832
833 struct nfs4_accessres {
834 const struct nfs_server * server;
835 struct nfs_fattr * fattr;
836 u32 supported;
837 u32 access;
838 struct nfs4_sequence_res seq_res;
839 };
840
841 struct nfs4_create_arg {
842 u32 ftype;
843 union {
844 struct {
845 struct page ** pages;
846 unsigned int len;
847 } symlink; /* NF4LNK */
848 struct {
849 u32 specdata1;
850 u32 specdata2;
851 } device; /* NF4BLK, NF4CHR */
852 } u;
853 const struct qstr * name;
854 const struct nfs_server * server;
855 const struct iattr * attrs;
856 const struct nfs_fh * dir_fh;
857 const u32 * bitmask;
858 struct nfs4_sequence_args seq_args;
859 };
860
861 struct nfs4_create_res {
862 const struct nfs_server * server;
863 struct nfs_fh * fh;
864 struct nfs_fattr * fattr;
865 struct nfs4_change_info dir_cinfo;
866 struct nfs4_sequence_res seq_res;
867 };
868
869 struct nfs4_fsinfo_arg {
870 const struct nfs_fh * fh;
871 const u32 * bitmask;
872 struct nfs4_sequence_args seq_args;
873 };
874
875 struct nfs4_fsinfo_res {
876 struct nfs_fsinfo *fsinfo;
877 struct nfs4_sequence_res seq_res;
878 };
879
880 struct nfs4_getattr_arg {
881 const struct nfs_fh * fh;
882 const u32 * bitmask;
883 struct nfs4_sequence_args seq_args;
884 };
885
886 struct nfs4_getattr_res {
887 const struct nfs_server * server;
888 struct nfs_fattr * fattr;
889 struct nfs4_sequence_res seq_res;
890 };
891
892 struct nfs4_link_arg {
893 const struct nfs_fh * fh;
894 const struct nfs_fh * dir_fh;
895 const struct qstr * name;
896 const u32 * bitmask;
897 struct nfs4_sequence_args seq_args;
898 };
899
900 struct nfs4_link_res {
901 const struct nfs_server * server;
902 struct nfs_fattr * fattr;
903 struct nfs4_change_info cinfo;
904 struct nfs_fattr * dir_attr;
905 struct nfs4_sequence_res seq_res;
906 };
907
908
909 struct nfs4_lookup_arg {
910 const struct nfs_fh * dir_fh;
911 const struct qstr * name;
912 const u32 * bitmask;
913 struct nfs4_sequence_args seq_args;
914 };
915
916 struct nfs4_lookup_res {
917 const struct nfs_server * server;
918 struct nfs_fattr * fattr;
919 struct nfs_fh * fh;
920 struct nfs4_sequence_res seq_res;
921 };
922
923 struct nfs4_lookup_root_arg {
924 const u32 * bitmask;
925 struct nfs4_sequence_args seq_args;
926 };
927
928 struct nfs4_pathconf_arg {
929 const struct nfs_fh * fh;
930 const u32 * bitmask;
931 struct nfs4_sequence_args seq_args;
932 };
933
934 struct nfs4_pathconf_res {
935 struct nfs_pathconf *pathconf;
936 struct nfs4_sequence_res seq_res;
937 };
938
939 struct nfs4_readdir_arg {
940 const struct nfs_fh * fh;
941 u64 cookie;
942 nfs4_verifier verifier;
943 u32 count;
944 struct page ** pages; /* zero-copy data */
945 unsigned int pgbase; /* zero-copy data */
946 const u32 * bitmask;
947 int plus;
948 struct nfs4_sequence_args seq_args;
949 };
950
951 struct nfs4_readdir_res {
952 nfs4_verifier verifier;
953 unsigned int pgbase;
954 struct nfs4_sequence_res seq_res;
955 };
956
957 struct nfs4_readlink {
958 const struct nfs_fh * fh;
959 unsigned int pgbase;
960 unsigned int pglen; /* zero-copy data */
961 struct page ** pages; /* zero-copy data */
962 struct nfs4_sequence_args seq_args;
963 };
964
965 struct nfs4_readlink_res {
966 struct nfs4_sequence_res seq_res;
967 };
968
969 #define NFS4_SETCLIENTID_NAMELEN (127)
970 struct nfs4_setclientid {
971 const nfs4_verifier * sc_verifier;
972 unsigned int sc_name_len;
973 char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
974 u32 sc_prog;
975 unsigned int sc_netid_len;
976 char sc_netid[RPCBIND_MAXNETIDLEN + 1];
977 unsigned int sc_uaddr_len;
978 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
979 u32 sc_cb_ident;
980 };
981
982 struct nfs4_setclientid_res {
983 u64 clientid;
984 nfs4_verifier confirm;
985 };
986
987 struct nfs4_statfs_arg {
988 const struct nfs_fh * fh;
989 const u32 * bitmask;
990 struct nfs4_sequence_args seq_args;
991 };
992
993 struct nfs4_statfs_res {
994 struct nfs_fsstat *fsstat;
995 struct nfs4_sequence_res seq_res;
996 };
997
998 struct nfs4_server_caps_arg {
999 struct nfs_fh *fhandle;
1000 struct nfs4_sequence_args seq_args;
1001 };
1002
1003 struct nfs4_server_caps_res {
1004 u32 attr_bitmask[3];
1005 u32 acl_bitmask;
1006 u32 has_links;
1007 u32 has_symlinks;
1008 u32 fh_expire_type;
1009 struct nfs4_sequence_res seq_res;
1010 };
1011
1012 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1013 struct nfs4_pathname {
1014 unsigned int ncomponents;
1015 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1016 };
1017
1018 #define NFS4_FS_LOCATION_MAXSERVERS 10
1019 struct nfs4_fs_location {
1020 unsigned int nservers;
1021 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1022 struct nfs4_pathname rootpath;
1023 };
1024
1025 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1026 struct nfs4_fs_locations {
1027 struct nfs_fattr fattr;
1028 const struct nfs_server *server;
1029 struct nfs4_pathname fs_path;
1030 int nlocations;
1031 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1032 };
1033
1034 struct nfs4_fs_locations_arg {
1035 const struct nfs_fh *dir_fh;
1036 const struct qstr *name;
1037 struct page *page;
1038 const u32 *bitmask;
1039 struct nfs4_sequence_args seq_args;
1040 };
1041
1042 struct nfs4_fs_locations_res {
1043 struct nfs4_fs_locations *fs_locations;
1044 struct nfs4_sequence_res seq_res;
1045 };
1046
1047 struct nfs4_secinfo_oid {
1048 unsigned int len;
1049 char data[GSS_OID_MAX_LEN];
1050 };
1051
1052 struct nfs4_secinfo_gss {
1053 struct nfs4_secinfo_oid sec_oid4;
1054 unsigned int qop4;
1055 unsigned int service;
1056 };
1057
1058 struct nfs4_secinfo_flavor {
1059 unsigned int flavor;
1060 struct nfs4_secinfo_gss gss;
1061 };
1062
1063 struct nfs4_secinfo_flavors {
1064 unsigned int num_flavors;
1065 struct nfs4_secinfo_flavor flavors[0];
1066 };
1067
1068 struct nfs4_secinfo_arg {
1069 const struct nfs_fh *dir_fh;
1070 const struct qstr *name;
1071 struct nfs4_sequence_args seq_args;
1072 };
1073
1074 struct nfs4_secinfo_res {
1075 struct nfs4_secinfo_flavors *flavors;
1076 struct nfs4_sequence_res seq_res;
1077 };
1078
1079 #endif /* CONFIG_NFS_V4 */
1080
1081 struct nfstime4 {
1082 u64 seconds;
1083 u32 nseconds;
1084 };
1085
1086 #ifdef CONFIG_NFS_V4_1
1087
1088 struct pnfs_commit_bucket {
1089 struct list_head written;
1090 struct list_head committing;
1091 struct pnfs_layout_segment *wlseg;
1092 struct pnfs_layout_segment *clseg;
1093 };
1094
1095 struct pnfs_ds_commit_info {
1096 int nwritten;
1097 int ncommitting;
1098 int nbuckets;
1099 struct pnfs_commit_bucket *buckets;
1100 };
1101
1102 #define NFS4_EXCHANGE_ID_LEN (48)
1103 struct nfs41_exchange_id_args {
1104 struct nfs_client *client;
1105 nfs4_verifier *verifier;
1106 unsigned int id_len;
1107 char id[NFS4_EXCHANGE_ID_LEN];
1108 u32 flags;
1109 };
1110
1111 struct nfs41_server_owner {
1112 uint64_t minor_id;
1113 uint32_t major_id_sz;
1114 char major_id[NFS4_OPAQUE_LIMIT];
1115 };
1116
1117 struct nfs41_server_scope {
1118 uint32_t server_scope_sz;
1119 char server_scope[NFS4_OPAQUE_LIMIT];
1120 };
1121
1122 struct nfs41_impl_id {
1123 char domain[NFS4_OPAQUE_LIMIT + 1];
1124 char name[NFS4_OPAQUE_LIMIT + 1];
1125 struct nfstime4 date;
1126 };
1127
1128 struct nfs41_bind_conn_to_session_res {
1129 struct nfs4_session *session;
1130 u32 dir;
1131 bool use_conn_in_rdma_mode;
1132 };
1133
1134 struct nfs41_exchange_id_res {
1135 u64 clientid;
1136 u32 seqid;
1137 u32 flags;
1138 struct nfs41_server_owner *server_owner;
1139 struct nfs41_server_scope *server_scope;
1140 struct nfs41_impl_id *impl_id;
1141 };
1142
1143 struct nfs41_create_session_args {
1144 struct nfs_client *client;
1145 uint32_t flags;
1146 uint32_t cb_program;
1147 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
1148 struct nfs4_channel_attrs bc_attrs; /* Back Channel */
1149 };
1150
1151 struct nfs41_create_session_res {
1152 struct nfs_client *client;
1153 };
1154
1155 struct nfs41_reclaim_complete_args {
1156 /* In the future extend to include curr_fh for use with migration */
1157 unsigned char one_fs:1;
1158 struct nfs4_sequence_args seq_args;
1159 };
1160
1161 struct nfs41_reclaim_complete_res {
1162 struct nfs4_sequence_res seq_res;
1163 };
1164
1165 #define SECINFO_STYLE_CURRENT_FH 0
1166 #define SECINFO_STYLE_PARENT 1
1167 struct nfs41_secinfo_no_name_args {
1168 int style;
1169 struct nfs4_sequence_args seq_args;
1170 };
1171
1172 struct nfs41_test_stateid_args {
1173 nfs4_stateid *stateid;
1174 struct nfs4_sequence_args seq_args;
1175 };
1176
1177 struct nfs41_test_stateid_res {
1178 unsigned int status;
1179 struct nfs4_sequence_res seq_res;
1180 };
1181
1182 struct nfs41_free_stateid_args {
1183 nfs4_stateid *stateid;
1184 struct nfs4_sequence_args seq_args;
1185 };
1186
1187 struct nfs41_free_stateid_res {
1188 unsigned int status;
1189 struct nfs4_sequence_res seq_res;
1190 };
1191
1192 #else
1193
1194 struct pnfs_ds_commit_info {
1195 };
1196
1197 #endif /* CONFIG_NFS_V4_1 */
1198
1199 struct nfs_page;
1200
1201 #define NFS_PAGEVEC_SIZE (8U)
1202
1203 struct nfs_page_array {
1204 struct page **pagevec;
1205 unsigned int npages; /* Max length of pagevec */
1206 struct page *page_array[NFS_PAGEVEC_SIZE];
1207 };
1208
1209 struct nfs_read_data {
1210 struct nfs_pgio_header *header;
1211 struct list_head list;
1212 struct rpc_task task;
1213 struct nfs_fattr fattr; /* fattr storage */
1214 struct nfs_readargs args;
1215 struct nfs_readres res;
1216 unsigned long timestamp; /* For lease renewal */
1217 int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1218 __u64 mds_offset;
1219 struct nfs_page_array pages;
1220 struct nfs_client *ds_clp; /* pNFS data server */
1221 };
1222
1223 /* used as flag bits in nfs_pgio_header */
1224 enum {
1225 NFS_IOHDR_ERROR = 0,
1226 NFS_IOHDR_EOF,
1227 NFS_IOHDR_REDO,
1228 NFS_IOHDR_NEED_COMMIT,
1229 NFS_IOHDR_NEED_RESCHED,
1230 };
1231
1232 struct nfs_pgio_header {
1233 struct inode *inode;
1234 struct rpc_cred *cred;
1235 struct list_head pages;
1236 struct list_head rpc_list;
1237 atomic_t refcnt;
1238 struct nfs_page *req;
1239 struct pnfs_layout_segment *lseg;
1240 loff_t io_start;
1241 const struct rpc_call_ops *mds_ops;
1242 void (*release) (struct nfs_pgio_header *hdr);
1243 const struct nfs_pgio_completion_ops *completion_ops;
1244 struct nfs_direct_req *dreq;
1245 spinlock_t lock;
1246 /* fields protected by lock */
1247 int pnfs_error;
1248 int error; /* merge with pnfs_error */
1249 unsigned long good_bytes; /* boundary of good data */
1250 unsigned long flags;
1251 };
1252
1253 struct nfs_read_header {
1254 struct nfs_pgio_header header;
1255 struct nfs_read_data rpc_data;
1256 };
1257
1258 struct nfs_write_data {
1259 struct nfs_pgio_header *header;
1260 struct list_head list;
1261 struct rpc_task task;
1262 struct nfs_fattr fattr;
1263 struct nfs_writeverf verf;
1264 struct nfs_writeargs args; /* argument struct */
1265 struct nfs_writeres res; /* result struct */
1266 unsigned long timestamp; /* For lease renewal */
1267 int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1268 __u64 mds_offset; /* Filelayout dense stripe */
1269 struct nfs_page_array pages;
1270 struct nfs_client *ds_clp; /* pNFS data server */
1271 };
1272
1273 struct nfs_write_header {
1274 struct nfs_pgio_header header;
1275 struct nfs_write_data rpc_data;
1276 };
1277
1278 struct nfs_mds_commit_info {
1279 atomic_t rpcs_out;
1280 unsigned long ncommit;
1281 struct list_head list;
1282 };
1283
1284 struct nfs_commit_data;
1285 struct nfs_inode;
1286 struct nfs_commit_completion_ops {
1287 void (*error_cleanup) (struct nfs_inode *nfsi);
1288 void (*completion) (struct nfs_commit_data *data);
1289 };
1290
1291 struct nfs_commit_info {
1292 spinlock_t *lock;
1293 struct nfs_mds_commit_info *mds;
1294 struct pnfs_ds_commit_info *ds;
1295 struct nfs_direct_req *dreq; /* O_DIRECT request */
1296 const struct nfs_commit_completion_ops *completion_ops;
1297 };
1298
1299 struct nfs_commit_data {
1300 struct rpc_task task;
1301 struct inode *inode;
1302 struct rpc_cred *cred;
1303 struct nfs_fattr fattr;
1304 struct nfs_writeverf verf;
1305 struct list_head pages; /* Coalesced requests we wish to flush */
1306 struct list_head list; /* lists of struct nfs_write_data */
1307 struct nfs_direct_req *dreq; /* O_DIRECT request */
1308 struct nfs_commitargs args; /* argument struct */
1309 struct nfs_commitres res; /* result struct */
1310 struct nfs_open_context *context;
1311 struct pnfs_layout_segment *lseg;
1312 struct nfs_client *ds_clp; /* pNFS data server */
1313 int ds_commit_index;
1314 const struct rpc_call_ops *mds_ops;
1315 const struct nfs_commit_completion_ops *completion_ops;
1316 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1317 };
1318
1319 struct nfs_pgio_completion_ops {
1320 void (*error_cleanup)(struct list_head *head);
1321 void (*init_hdr)(struct nfs_pgio_header *hdr);
1322 void (*completion)(struct nfs_pgio_header *hdr);
1323 };
1324
1325 struct nfs_unlinkdata {
1326 struct hlist_node list;
1327 struct nfs_removeargs args;
1328 struct nfs_removeres res;
1329 struct inode *dir;
1330 struct rpc_cred *cred;
1331 struct nfs_fattr dir_attr;
1332 };
1333
1334 struct nfs_renamedata {
1335 struct nfs_renameargs args;
1336 struct nfs_renameres res;
1337 struct rpc_cred *cred;
1338 struct inode *old_dir;
1339 struct dentry *old_dentry;
1340 struct nfs_fattr old_fattr;
1341 struct inode *new_dir;
1342 struct dentry *new_dentry;
1343 struct nfs_fattr new_fattr;
1344 };
1345
1346 struct nfs_access_entry;
1347 struct nfs_client;
1348 struct rpc_timeout;
1349
1350 /*
1351 * RPC procedure vector for NFSv2/NFSv3 demuxing
1352 */
1353 struct nfs_rpc_ops {
1354 u32 version; /* Protocol version */
1355 const struct dentry_operations *dentry_ops;
1356 const struct inode_operations *dir_inode_ops;
1357 const struct inode_operations *file_inode_ops;
1358 const struct file_operations *file_ops;
1359
1360 int (*getroot) (struct nfs_server *, struct nfs_fh *,
1361 struct nfs_fsinfo *);
1362 struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1363 struct nfs_fh *, struct nfs_fattr *);
1364 int (*getattr) (struct nfs_server *, struct nfs_fh *,
1365 struct nfs_fattr *);
1366 int (*setattr) (struct dentry *, struct nfs_fattr *,
1367 struct iattr *);
1368 int (*lookup) (struct inode *, struct qstr *,
1369 struct nfs_fh *, struct nfs_fattr *);
1370 int (*access) (struct inode *, struct nfs_access_entry *);
1371 int (*readlink)(struct inode *, struct page *, unsigned int,
1372 unsigned int);
1373 int (*create) (struct inode *, struct dentry *,
1374 struct iattr *, int, struct nfs_open_context *);
1375 int (*remove) (struct inode *, struct qstr *);
1376 void (*unlink_setup) (struct rpc_message *, struct inode *dir);
1377 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1378 int (*unlink_done) (struct rpc_task *, struct inode *);
1379 int (*rename) (struct inode *, struct qstr *,
1380 struct inode *, struct qstr *);
1381 void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
1382 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1383 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1384 int (*link) (struct inode *, struct inode *, struct qstr *);
1385 int (*symlink) (struct inode *, struct dentry *, struct page *,
1386 unsigned int, struct iattr *);
1387 int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
1388 int (*rmdir) (struct inode *, struct qstr *);
1389 int (*readdir) (struct dentry *, struct rpc_cred *,
1390 u64, struct page **, unsigned int, int);
1391 int (*mknod) (struct inode *, struct dentry *, struct iattr *,
1392 dev_t);
1393 int (*statfs) (struct nfs_server *, struct nfs_fh *,
1394 struct nfs_fsstat *);
1395 int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
1396 struct nfs_fsinfo *);
1397 int (*pathconf) (struct nfs_server *, struct nfs_fh *,
1398 struct nfs_pathconf *);
1399 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1400 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1401 void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
1402 void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1403 int (*read_done) (struct rpc_task *, struct nfs_read_data *);
1404 void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
1405 void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1406 int (*write_done) (struct rpc_task *, struct nfs_write_data *);
1407 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1408 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1409 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1410 int (*lock)(struct file *, int, struct file_lock *);
1411 int (*lock_check_bounds)(const struct file_lock *);
1412 void (*clear_acl_cache)(struct inode *);
1413 void (*close_context)(struct nfs_open_context *ctx, int);
1414 struct inode * (*open_context) (struct inode *dir,
1415 struct nfs_open_context *ctx,
1416 int open_flags,
1417 struct iattr *iattr);
1418 struct nfs_client *
1419 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1420 const char *, rpc_authflavor_t);
1421 };
1422
1423 /*
1424 * NFS_CALL(getattr, inode, (fattr));
1425 * into
1426 * NFS_PROTO(inode)->getattr(fattr);
1427 */
1428 #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
1429
1430 /*
1431 * Function vectors etc. for the NFS client
1432 */
1433 extern const struct nfs_rpc_ops nfs_v2_clientops;
1434 extern const struct nfs_rpc_ops nfs_v3_clientops;
1435 extern const struct nfs_rpc_ops nfs_v4_clientops;
1436 extern const struct rpc_version nfs_version2;
1437 extern const struct rpc_version nfs_version3;
1438 extern const struct rpc_version nfs_version4;
1439
1440 extern const struct rpc_version nfsacl_version3;
1441 extern const struct rpc_program nfsacl_program;
1442
1443 #endif
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