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 struct nfs4_string {
  18         unsigned int len;
  19         char *data;
  20 };
  21
  22 struct nfs_fsid {
  23         uint64_t                major;
  24         uint64_t                minor;
  25 };
  26
  27 /*
  28  * Helper for checking equality between 2 fsids.
  29  */
  30 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  31 {
  32         return a->major == b->major && a->minor == b->minor;
  33 }
  34
  35 struct nfs4_threshold {
  36         __u32   bm;
  37         __u32   l_type;
  38         __u64   rd_sz;
  39         __u64   wr_sz;
  40         __u64   rd_io_sz;
  41         __u64   wr_io_sz;
  42 };
  43
  44 struct nfs_fattr {
  45         unsigned int            valid;          /* which fields are valid */
  46         umode_t                 mode;
  47         __u32                   nlink;
  48         kuid_t                  uid;
  49         kgid_t                  gid;
  50         dev_t                   rdev;
  51         __u64                   size;
  52         union {
  53                 struct {
  54                         __u32   blocksize;
  55                         __u32   blocks;
  56                 } nfs2;
  57                 struct {
  58                         __u64   used;
  59                 } nfs3;
  60         } du;
  61         struct nfs_fsid         fsid;
  62         __u64                   fileid;
  63         __u64                   mounted_on_fileid;
  64         struct timespec         atime;
  65         struct timespec         mtime;
  66         struct timespec         ctime;
  67         __u64                   change_attr;    /* NFSv4 change attribute */
  68         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  69         __u64                   pre_size;       /* pre_op_attr.size       */
  70         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  71         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  72         unsigned long           time_start;
  73         unsigned long           gencount;
  74         struct nfs4_string      *owner_name;
  75         struct nfs4_string      *group_name;
  76         struct nfs4_threshold   *mdsthreshold;  /* pNFS threshold hints */
  77 };
  78
  79 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  80 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  81 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  82 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  83 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  84 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  85 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  86 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  87 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  88 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  89 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  90 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  91 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  92 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  93 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  94 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  95 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  96 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  97 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  98 #define NFS_ATTR_FATTR_V4_LOCATIONS     (1U << 19)
  99 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 20)
 100 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 21)
 101 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
 102 #define NFS_ATTR_FATTR_OWNER_NAME       (1U << 23)
 103 #define NFS_ATTR_FATTR_GROUP_NAME       (1U << 24)
 104 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
 105
 106 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
 107                 | NFS_ATTR_FATTR_MODE \
 108                 | NFS_ATTR_FATTR_NLINK \
 109                 | NFS_ATTR_FATTR_OWNER \
 110                 | NFS_ATTR_FATTR_GROUP \
 111                 | NFS_ATTR_FATTR_RDEV \
 112                 | NFS_ATTR_FATTR_SIZE \
 113                 | NFS_ATTR_FATTR_FSID \
 114                 | NFS_ATTR_FATTR_FILEID \
 115                 | NFS_ATTR_FATTR_ATIME \
 116                 | NFS_ATTR_FATTR_MTIME \
 117                 | NFS_ATTR_FATTR_CTIME \
 118                 | NFS_ATTR_FATTR_CHANGE)
 119 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 120                 | NFS_ATTR_FATTR_BLOCKS_USED)
 121 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 122                 | NFS_ATTR_FATTR_SPACE_USED)
 123 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 124                 | NFS_ATTR_FATTR_SPACE_USED \
 125                 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
 126
 127 /*
 128  * Info on the file system
 129  */
 130 struct nfs_fsinfo {
 131         struct nfs_fattr        *fattr; /* Post-op attributes */
 132         __u32                   rtmax;  /* max.  read transfer size */
 133         __u32                   rtpref; /* pref. read transfer size */
 134         __u32                   rtmult; /* reads should be multiple of this */
 135         __u32                   wtmax;  /* max.  write transfer size */
 136         __u32                   wtpref; /* pref. write transfer size */
 137         __u32                   wtmult; /* writes should be multiple of this */
 138         __u32                   dtpref; /* pref. readdir transfer size */
 139         __u64                   maxfilesize;
 140         struct timespec         time_delta; /* server time granularity */
 141         __u32                   lease_time; /* in seconds */
 142         __u32                   layouttype; /* supported pnfs layout driver */
 143         __u32                   blksize; /* preferred pnfs io block size */
 144 };
 145
 146 struct nfs_fsstat {
 147         struct nfs_fattr        *fattr; /* Post-op attributes */
 148         __u64                   tbytes; /* total size in bytes */
 149         __u64                   fbytes; /* # of free bytes */
 150         __u64                   abytes; /* # of bytes available to user */
 151         __u64                   tfiles; /* # of files */
 152         __u64                   ffiles; /* # of free files */
 153         __u64                   afiles; /* # of files available to user */
 154 };
 155
 156 struct nfs2_fsstat {
 157         __u32                   tsize;  /* Server transfer size */
 158         __u32                   bsize;  /* Filesystem block size */
 159         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 160         __u32                   bfree;  /* No. of free "bsize" blocks */
 161         __u32                   bavail; /* No. of available "bsize" blocks */
 162 };
 163
 164 struct nfs_pathconf {
 165         struct nfs_fattr        *fattr; /* Post-op attributes */
 166         __u32                   max_link; /* max # of hard links */
 167         __u32                   max_namelen; /* max name length */
 168 };
 169
 170 struct nfs4_change_info {
 171         u32                     atomic;
 172         u64                     before;
 173         u64                     after;
 174 };
 175
 176 struct nfs_seqid;
 177
 178 /* nfs41 sessions channel attributes */
 179 struct nfs4_channel_attrs {
 180         u32                     max_rqst_sz;
 181         u32                     max_resp_sz;
 182         u32                     max_resp_sz_cached;
 183         u32                     max_ops;
 184         u32                     max_reqs;
 185 };
 186
 187 struct nfs4_slot;
 188 struct nfs4_sequence_args {
 189         struct nfs4_slot        *sa_slot;
 190         u8                      sa_cache_this : 1,
 191                                 sa_privileged : 1;
 192 };
 193
 194 struct nfs4_sequence_res {
 195         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 196         unsigned long           sr_timestamp;
 197         int                     sr_status;      /* sequence operation status */
 198         u32                     sr_status_flags;
 199         u32                     sr_highest_slotid;
 200         u32                     sr_target_highest_slotid;
 201 };
 202
 203 struct nfs4_get_lease_time_args {
 204         struct nfs4_sequence_args       la_seq_args;
 205 };
 206
 207 struct nfs4_get_lease_time_res {
 208         struct nfs4_sequence_res        lr_seq_res;
 209         struct nfs_fsinfo              *lr_fsinfo;
 210 };
 211
 212 #define PNFS_LAYOUT_MAXSIZE 4096
 213
 214 struct nfs4_layoutdriver_data {
 215         struct page **pages;
 216         __u32 pglen;
 217         __u32 len;
 218 };
 219
 220 struct pnfs_layout_range {
 221         u32 iomode;
 222         u64 offset;
 223         u64 length;
 224 };
 225
 226 struct nfs4_layoutget_args {
 227         struct nfs4_sequence_args seq_args;
 228         __u32 type;
 229         struct pnfs_layout_range range;
 230         __u64 minlength;
 231         __u32 maxcount;
 232         struct inode *inode;
 233         struct nfs_open_context *ctx;
 234         nfs4_stateid stateid;
 235         unsigned long timestamp;
 236         struct nfs4_layoutdriver_data layout;
 237 };
 238
 239 struct nfs4_layoutget_res {
 240         struct nfs4_sequence_res seq_res;
 241         __u32 return_on_close;
 242         struct pnfs_layout_range range;
 243         __u32 type;
 244         nfs4_stateid stateid;
 245         struct nfs4_layoutdriver_data *layoutp;
 246 };
 247
 248 struct nfs4_layoutget {
 249         struct nfs4_layoutget_args args;
 250         struct nfs4_layoutget_res res;
 251         struct rpc_cred *cred;
 252         gfp_t gfp_flags;
 253 };
 254
 255 struct nfs4_getdeviceinfo_args {
 256         struct nfs4_sequence_args seq_args;
 257         struct pnfs_device *pdev;
 258         __u32 notify_types;
 259 };
 260
 261 struct nfs4_getdeviceinfo_res {
 262         struct nfs4_sequence_res seq_res;
 263         struct pnfs_device *pdev;
 264         __u32 notification;
 265 };
 266
 267 struct nfs4_layoutcommit_args {
 268         struct nfs4_sequence_args seq_args;
 269         nfs4_stateid stateid;
 270         __u64 lastbytewritten;
 271         struct inode *inode;
 272         const u32 *bitmask;
 273         size_t layoutupdate_len;
 274         struct page *layoutupdate_page;
 275         struct page **layoutupdate_pages;
 276 };
 277
 278 struct nfs4_layoutcommit_res {
 279         struct nfs4_sequence_res seq_res;
 280         struct nfs_fattr *fattr;
 281         const struct nfs_server *server;
 282         int status;
 283 };
 284
 285 struct nfs4_layoutcommit_data {
 286         struct rpc_task task;
 287         struct nfs_fattr fattr;
 288         struct list_head lseg_list;
 289         struct rpc_cred *cred;
 290         struct inode *inode;
 291         struct nfs4_layoutcommit_args args;
 292         struct nfs4_layoutcommit_res res;
 293 };
 294
 295 struct nfs4_layoutreturn_args {
 296         struct nfs4_sequence_args seq_args;
 297         struct pnfs_layout_hdr *layout;
 298         struct inode *inode;
 299         struct pnfs_layout_range range;
 300         nfs4_stateid stateid;
 301         __u32   layout_type;
 302 };
 303
 304 struct nfs4_layoutreturn_res {
 305         struct nfs4_sequence_res seq_res;
 306         u32 lrs_present;
 307         nfs4_stateid stateid;
 308 };
 309
 310 struct nfs4_layoutreturn {
 311         struct nfs4_layoutreturn_args args;
 312         struct nfs4_layoutreturn_res res;
 313         struct rpc_cred *cred;
 314         struct nfs_client *clp;
 315         struct inode *inode;
 316         int rpc_status;
 317 };
 318
 319 #define PNFS_LAYOUTSTATS_MAXSIZE 256
 320
 321 struct nfs42_layoutstat_args;
 322 struct nfs42_layoutstat_devinfo;
 323 typedef void (*layoutstats_encode_t)(struct xdr_stream *,
 324                 struct nfs42_layoutstat_args *,
 325                 struct nfs42_layoutstat_devinfo *);
 326
 327 /* Per file per deviceid layoutstats */
 328 struct nfs42_layoutstat_devinfo {
 329         struct nfs4_deviceid dev_id;
 330         __u64 offset;
 331         __u64 length;
 332         __u64 read_count;
 333         __u64 read_bytes;
 334         __u64 write_count;
 335         __u64 write_bytes;
 336         __u32 layout_type;
 337         layoutstats_encode_t layoutstats_encode;
 338         void *layout_private;
 339 };
 340
 341 struct nfs42_layoutstat_args {
 342         struct nfs4_sequence_args seq_args;
 343         struct nfs_fh *fh;
 344         struct inode *inode;
 345         nfs4_stateid stateid;
 346         int num_dev;
 347         struct nfs42_layoutstat_devinfo *devinfo;
 348 };
 349
 350 struct nfs42_layoutstat_res {
 351         struct nfs4_sequence_res seq_res;
 352         int num_dev;
 353         int rpc_status;
 354 };
 355
 356 struct nfs42_layoutstat_data {
 357         struct inode *inode;
 358         struct nfs42_layoutstat_args args;
 359         struct nfs42_layoutstat_res res;
 360 };
 361
 362 struct stateowner_id {
 363         __u64   create_time;
 364         __u32   uniquifier;
 365 };
 366
 367 /*
 368  * Arguments to the open call.
 369  */
 370 struct nfs_openargs {
 371         struct nfs4_sequence_args       seq_args;
 372         const struct nfs_fh *   fh;
 373         struct nfs_seqid *      seqid;
 374         int                     open_flags;
 375         fmode_t                 fmode;
 376         u32                     share_access;
 377         u32                     access;
 378         __u64                   clientid;
 379         struct stateowner_id    id;
 380         union {
 381                 struct {
 382                         struct iattr *  attrs;    /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
 383                         nfs4_verifier   verifier; /* EXCLUSIVE */
 384                 };
 385                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 386                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 387         } u;
 388         const struct qstr *     name;
 389         const struct nfs_server *server;         /* Needed for ID mapping */
 390         const u32 *             bitmask;
 391         const u32 *             open_bitmap;
 392         enum open_claim_type4   claim;
 393         enum createmode4        createmode;
 394         const struct nfs4_label *label;
 395 };
 396
 397 struct nfs_openres {
 398         struct nfs4_sequence_res        seq_res;
 399         nfs4_stateid            stateid;
 400         struct nfs_fh           fh;
 401         struct nfs4_change_info cinfo;
 402         __u32                   rflags;
 403         struct nfs_fattr *      f_attr;
 404         struct nfs4_label       *f_label;
 405         struct nfs_seqid *      seqid;
 406         const struct nfs_server *server;
 407         fmode_t                 delegation_type;
 408         nfs4_stateid            delegation;
 409         unsigned long           pagemod_limit;
 410         __u32                   do_recall;
 411         __u32                   attrset[NFS4_BITMAP_SIZE];
 412         struct nfs4_string      *owner;
 413         struct nfs4_string      *group_owner;
 414         __u32                   access_request;
 415         __u32                   access_supported;
 416         __u32                   access_result;
 417 };
 418
 419 /*
 420  * Arguments to the open_confirm call.
 421  */
 422 struct nfs_open_confirmargs {
 423         struct nfs4_sequence_args       seq_args;
 424         const struct nfs_fh *   fh;
 425         nfs4_stateid *          stateid;
 426         struct nfs_seqid *      seqid;
 427 };
 428
 429 struct nfs_open_confirmres {
 430         struct nfs4_sequence_res        seq_res;
 431         nfs4_stateid            stateid;
 432         struct nfs_seqid *      seqid;
 433 };
 434
 435 /*
 436  * Arguments to the close call.
 437  */
 438 struct nfs_closeargs {
 439         struct nfs4_sequence_args       seq_args;
 440         struct nfs_fh *         fh;
 441         nfs4_stateid            stateid;
 442         struct nfs_seqid *      seqid;
 443         fmode_t                 fmode;
 444         u32                     share_access;
 445         const u32 *             bitmask;
 446 };
 447
 448 struct nfs_closeres {
 449         struct nfs4_sequence_res        seq_res;
 450         nfs4_stateid            stateid;
 451         struct nfs_fattr *      fattr;
 452         struct nfs_seqid *      seqid;
 453         const struct nfs_server *server;
 454 };
 455 /*
 456  *  * Arguments to the lock,lockt, and locku call.
 457  *   */
 458 struct nfs_lowner {
 459         __u64                   clientid;
 460         __u64                   id;
 461         dev_t                   s_dev;
 462 };
 463
 464 struct nfs_lock_args {
 465         struct nfs4_sequence_args       seq_args;
 466         struct nfs_fh *         fh;
 467         struct file_lock *      fl;
 468         struct nfs_seqid *      lock_seqid;
 469         nfs4_stateid            lock_stateid;
 470         struct nfs_seqid *      open_seqid;
 471         nfs4_stateid            open_stateid;
 472         struct nfs_lowner       lock_owner;
 473         unsigned char           block : 1;
 474         unsigned char           reclaim : 1;
 475         unsigned char           new_lock : 1;
 476         unsigned char           new_lock_owner : 1;
 477 };
 478
 479 struct nfs_lock_res {
 480         struct nfs4_sequence_res        seq_res;
 481         nfs4_stateid            stateid;
 482         struct nfs_seqid *      lock_seqid;
 483         struct nfs_seqid *      open_seqid;
 484 };
 485
 486 struct nfs_locku_args {
 487         struct nfs4_sequence_args       seq_args;
 488         struct nfs_fh *         fh;
 489         struct file_lock *      fl;
 490         struct nfs_seqid *      seqid;
 491         nfs4_stateid            stateid;
 492 };
 493
 494 struct nfs_locku_res {
 495         struct nfs4_sequence_res        seq_res;
 496         nfs4_stateid            stateid;
 497         struct nfs_seqid *      seqid;
 498 };
 499
 500 struct nfs_lockt_args {
 501         struct nfs4_sequence_args       seq_args;
 502         struct nfs_fh *         fh;
 503         struct file_lock *      fl;
 504         struct nfs_lowner       lock_owner;
 505 };
 506
 507 struct nfs_lockt_res {
 508         struct nfs4_sequence_res        seq_res;
 509         struct file_lock *      denied; /* LOCK, LOCKT failed */
 510 };
 511
 512 struct nfs_release_lockowner_args {
 513         struct nfs4_sequence_args       seq_args;
 514         struct nfs_lowner       lock_owner;
 515 };
 516
 517 struct nfs_release_lockowner_res {
 518         struct nfs4_sequence_res        seq_res;
 519 };
 520
 521 struct nfs4_delegreturnargs {
 522         struct nfs4_sequence_args       seq_args;
 523         const struct nfs_fh *fhandle;
 524         const nfs4_stateid *stateid;
 525         const u32 * bitmask;
 526 };
 527
 528 struct nfs4_delegreturnres {
 529         struct nfs4_sequence_res        seq_res;
 530         struct nfs_fattr * fattr;
 531         const struct nfs_server *server;
 532 };
 533
 534 /*
 535  * Arguments to the write call.
 536  */
 537 struct nfs_write_verifier {
 538         char                    data[8];
 539 };
 540
 541 struct nfs_writeverf {
 542         struct nfs_write_verifier verifier;
 543         enum nfs3_stable_how    committed;
 544 };
 545
 546 /*
 547  * Arguments shared by the read and write call.
 548  */
 549 struct nfs_pgio_args {
 550         struct nfs4_sequence_args       seq_args;
 551         struct nfs_fh *         fh;
 552         struct nfs_open_context *context;
 553         struct nfs_lock_context *lock_context;
 554         nfs4_stateid            stateid;
 555         __u64                   offset;
 556         __u32                   count;
 557         unsigned int            pgbase;
 558         struct page **          pages;
 559         const u32 *             bitmask;        /* used by write */
 560         enum nfs3_stable_how    stable;         /* used by write */
 561 };
 562
 563 struct nfs_pgio_res {
 564         struct nfs4_sequence_res        seq_res;
 565         struct nfs_fattr *      fattr;
 566         __u32                   count;
 567         __u32                   op_status;
 568         int                     eof;            /* used by read */
 569         struct nfs_writeverf *  verf;           /* used by write */
 570         const struct nfs_server *server;        /* used by write */
 571
 572 };
 573
 574 /*
 575  * Arguments to the commit call.
 576  */
 577 struct nfs_commitargs {
 578         struct nfs4_sequence_args       seq_args;
 579         struct nfs_fh           *fh;
 580         __u64                   offset;
 581         __u32                   count;
 582         const u32               *bitmask;
 583 };
 584
 585 struct nfs_commitres {
 586         struct nfs4_sequence_res        seq_res;
 587         __u32                   op_status;
 588         struct nfs_fattr        *fattr;
 589         struct nfs_writeverf    *verf;
 590         const struct nfs_server *server;
 591 };
 592
 593 /*
 594  * Common arguments to the unlink call
 595  */
 596 struct nfs_removeargs {
 597         struct nfs4_sequence_args       seq_args;
 598         const struct nfs_fh     *fh;
 599         struct qstr             name;
 600 };
 601
 602 struct nfs_removeres {
 603         struct nfs4_sequence_res        seq_res;
 604         const struct nfs_server *server;
 605         struct nfs_fattr        *dir_attr;
 606         struct nfs4_change_info cinfo;
 607 };
 608
 609 /*
 610  * Common arguments to the rename call
 611  */
 612 struct nfs_renameargs {
 613         struct nfs4_sequence_args       seq_args;
 614         const struct nfs_fh             *old_dir;
 615         const struct nfs_fh             *new_dir;
 616         const struct qstr               *old_name;
 617         const struct qstr               *new_name;
 618 };
 619
 620 struct nfs_renameres {
 621         struct nfs4_sequence_res        seq_res;
 622         const struct nfs_server         *server;
 623         struct nfs4_change_info         old_cinfo;
 624         struct nfs_fattr                *old_fattr;
 625         struct nfs4_change_info         new_cinfo;
 626         struct nfs_fattr                *new_fattr;
 627 };
 628
 629 /* parsed sec= options */
 630 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
 631 struct nfs_auth_info {
 632         unsigned int            flavor_len;
 633         rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
 634 };
 635
 636 /*
 637  * Argument struct for decode_entry function
 638  */
 639 struct nfs_entry {
 640         __u64                   ino;
 641         __u64                   cookie,
 642                                 prev_cookie;
 643         const char *            name;
 644         unsigned int            len;
 645         int                     eof;
 646         struct nfs_fh *         fh;
 647         struct nfs_fattr *      fattr;
 648         struct nfs4_label  *label;
 649         unsigned char           d_type;
 650         struct nfs_server *     server;
 651 };
 652
 653 /*
 654  * The following types are for NFSv2 only.
 655  */
 656 struct nfs_sattrargs {
 657         struct nfs_fh *         fh;
 658         struct iattr *          sattr;
 659 };
 660
 661 struct nfs_diropargs {
 662         struct nfs_fh *         fh;
 663         const char *            name;
 664         unsigned int            len;
 665 };
 666
 667 struct nfs_createargs {
 668         struct nfs_fh *         fh;
 669         const char *            name;
 670         unsigned int            len;
 671         struct iattr *          sattr;
 672 };
 673
 674 struct nfs_setattrargs {
 675         struct nfs4_sequence_args       seq_args;
 676         struct nfs_fh *                 fh;
 677         nfs4_stateid                    stateid;
 678         struct iattr *                  iap;
 679         const struct nfs_server *       server; /* Needed for name mapping */
 680         const u32 *                     bitmask;
 681         const struct nfs4_label         *label;
 682 };
 683
 684 struct nfs_setaclargs {
 685         struct nfs4_sequence_args       seq_args;
 686         struct nfs_fh *                 fh;
 687         size_t                          acl_len;
 688         unsigned int                    acl_pgbase;
 689         struct page **                  acl_pages;
 690 };
 691
 692 struct nfs_setaclres {
 693         struct nfs4_sequence_res        seq_res;
 694 };
 695
 696 struct nfs_getaclargs {
 697         struct nfs4_sequence_args       seq_args;
 698         struct nfs_fh *                 fh;
 699         size_t                          acl_len;
 700         unsigned int                    acl_pgbase;
 701         struct page **                  acl_pages;
 702 };
 703
 704 /* getxattr ACL interface flags */
 705 #define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
 706 struct nfs_getaclres {
 707         struct nfs4_sequence_res        seq_res;
 708         size_t                          acl_len;
 709         size_t                          acl_data_offset;
 710         int                             acl_flags;
 711         struct page *                   acl_scratch;
 712 };
 713
 714 struct nfs_setattrres {
 715         struct nfs4_sequence_res        seq_res;
 716         struct nfs_fattr *              fattr;
 717         struct nfs4_label               *label;
 718         const struct nfs_server *       server;
 719 };
 720
 721 struct nfs_linkargs {
 722         struct nfs_fh *         fromfh;
 723         struct nfs_fh *         tofh;
 724         const char *            toname;
 725         unsigned int            tolen;
 726 };
 727
 728 struct nfs_symlinkargs {
 729         struct nfs_fh *         fromfh;
 730         const char *            fromname;
 731         unsigned int            fromlen;
 732         struct page **          pages;
 733         unsigned int            pathlen;
 734         struct iattr *          sattr;
 735 };
 736
 737 struct nfs_readdirargs {
 738         struct nfs_fh *         fh;
 739         __u32                   cookie;
 740         unsigned int            count;
 741         struct page **          pages;
 742 };
 743
 744 struct nfs3_getaclargs {
 745         struct nfs_fh *         fh;
 746         int                     mask;
 747         struct page **          pages;
 748 };
 749
 750 struct nfs3_setaclargs {
 751         struct inode *          inode;
 752         int                     mask;
 753         struct posix_acl *      acl_access;
 754         struct posix_acl *      acl_default;
 755         size_t                  len;
 756         unsigned int            npages;
 757         struct page **          pages;
 758 };
 759
 760 struct nfs_diropok {
 761         struct nfs_fh *         fh;
 762         struct nfs_fattr *      fattr;
 763 };
 764
 765 struct nfs_readlinkargs {
 766         struct nfs_fh *         fh;
 767         unsigned int            pgbase;
 768         unsigned int            pglen;
 769         struct page **          pages;
 770 };
 771
 772 struct nfs3_sattrargs {
 773         struct nfs_fh *         fh;
 774         struct iattr *          sattr;
 775         unsigned int            guard;
 776         struct timespec         guardtime;
 777 };
 778
 779 struct nfs3_diropargs {
 780         struct nfs_fh *         fh;
 781         const char *            name;
 782         unsigned int            len;
 783 };
 784
 785 struct nfs3_accessargs {
 786         struct nfs_fh *         fh;
 787         __u32                   access;
 788 };
 789
 790 struct nfs3_createargs {
 791         struct nfs_fh *         fh;
 792         const char *            name;
 793         unsigned int            len;
 794         struct iattr *          sattr;
 795         enum nfs3_createmode    createmode;
 796         __be32                  verifier[2];
 797 };
 798
 799 struct nfs3_mkdirargs {
 800         struct nfs_fh *         fh;
 801         const char *            name;
 802         unsigned int            len;
 803         struct iattr *          sattr;
 804 };
 805
 806 struct nfs3_symlinkargs {
 807         struct nfs_fh *         fromfh;
 808         const char *            fromname;
 809         unsigned int            fromlen;
 810         struct page **          pages;
 811         unsigned int            pathlen;
 812         struct iattr *          sattr;
 813 };
 814
 815 struct nfs3_mknodargs {
 816         struct nfs_fh *         fh;
 817         const char *            name;
 818         unsigned int            len;
 819         enum nfs3_ftype         type;
 820         struct iattr *          sattr;
 821         dev_t                   rdev;
 822 };
 823
 824 struct nfs3_linkargs {
 825         struct nfs_fh *         fromfh;
 826         struct nfs_fh *         tofh;
 827         const char *            toname;
 828         unsigned int            tolen;
 829 };
 830
 831 struct nfs3_readdirargs {
 832         struct nfs_fh *         fh;
 833         __u64                   cookie;
 834         __be32                  verf[2];
 835         int                     plus;
 836         unsigned int            count;
 837         struct page **          pages;
 838 };
 839
 840 struct nfs3_diropres {
 841         struct nfs_fattr *      dir_attr;
 842         struct nfs_fh *         fh;
 843         struct nfs_fattr *      fattr;
 844 };
 845
 846 struct nfs3_accessres {
 847         struct nfs_fattr *      fattr;
 848         __u32                   access;
 849 };
 850
 851 struct nfs3_readlinkargs {
 852         struct nfs_fh *         fh;
 853         unsigned int            pgbase;
 854         unsigned int            pglen;
 855         struct page **          pages;
 856 };
 857
 858 struct nfs3_linkres {
 859         struct nfs_fattr *      dir_attr;
 860         struct nfs_fattr *      fattr;
 861 };
 862
 863 struct nfs3_readdirres {
 864         struct nfs_fattr *      dir_attr;
 865         __be32 *                verf;
 866         int                     plus;
 867 };
 868
 869 struct nfs3_getaclres {
 870         struct nfs_fattr *      fattr;
 871         int                     mask;
 872         unsigned int            acl_access_count;
 873         unsigned int            acl_default_count;
 874         struct posix_acl *      acl_access;
 875         struct posix_acl *      acl_default;
 876 };
 877
 878 #if IS_ENABLED(CONFIG_NFS_V4)
 879
 880 typedef u64 clientid4;
 881
 882 struct nfs4_accessargs {
 883         struct nfs4_sequence_args       seq_args;
 884         const struct nfs_fh *           fh;
 885         const u32 *                     bitmask;
 886         u32                             access;
 887 };
 888
 889 struct nfs4_accessres {
 890         struct nfs4_sequence_res        seq_res;
 891         const struct nfs_server *       server;
 892         struct nfs_fattr *              fattr;
 893         u32                             supported;
 894         u32                             access;
 895 };
 896
 897 struct nfs4_create_arg {
 898         struct nfs4_sequence_args       seq_args;
 899         u32                             ftype;
 900         union {
 901                 struct {
 902                         struct page **  pages;
 903                         unsigned int    len;
 904                 } symlink;   /* NF4LNK */
 905                 struct {
 906                         u32             specdata1;
 907                         u32             specdata2;
 908                 } device;    /* NF4BLK, NF4CHR */
 909         } u;
 910         const struct qstr *             name;
 911         const struct nfs_server *       server;
 912         const struct iattr *            attrs;
 913         const struct nfs_fh *           dir_fh;
 914         const u32 *                     bitmask;
 915         const struct nfs4_label         *label;
 916 };
 917
 918 struct nfs4_create_res {
 919         struct nfs4_sequence_res        seq_res;
 920         const struct nfs_server *       server;
 921         struct nfs_fh *                 fh;
 922         struct nfs_fattr *              fattr;
 923         struct nfs4_label               *label;
 924         struct nfs4_change_info         dir_cinfo;
 925 };
 926
 927 struct nfs4_fsinfo_arg {
 928         struct nfs4_sequence_args       seq_args;
 929         const struct nfs_fh *           fh;
 930         const u32 *                     bitmask;
 931 };
 932
 933 struct nfs4_fsinfo_res {
 934         struct nfs4_sequence_res        seq_res;
 935         struct nfs_fsinfo              *fsinfo;
 936 };
 937
 938 struct nfs4_getattr_arg {
 939         struct nfs4_sequence_args       seq_args;
 940         const struct nfs_fh *           fh;
 941         const u32 *                     bitmask;
 942 };
 943
 944 struct nfs4_getattr_res {
 945         struct nfs4_sequence_res        seq_res;
 946         const struct nfs_server *       server;
 947         struct nfs_fattr *              fattr;
 948         struct nfs4_label               *label;
 949 };
 950
 951 struct nfs4_link_arg {
 952         struct nfs4_sequence_args       seq_args;
 953         const struct nfs_fh *           fh;
 954         const struct nfs_fh *           dir_fh;
 955         const struct qstr *             name;
 956         const u32 *                     bitmask;
 957 };
 958
 959 struct nfs4_link_res {
 960         struct nfs4_sequence_res        seq_res;
 961         const struct nfs_server *       server;
 962         struct nfs_fattr *              fattr;
 963         struct nfs4_label               *label;
 964         struct nfs4_change_info         cinfo;
 965         struct nfs_fattr *              dir_attr;
 966 };
 967
 968
 969 struct nfs4_lookup_arg {
 970         struct nfs4_sequence_args       seq_args;
 971         const struct nfs_fh *           dir_fh;
 972         const struct qstr *             name;
 973         const u32 *                     bitmask;
 974 };
 975
 976 struct nfs4_lookup_res {
 977         struct nfs4_sequence_res        seq_res;
 978         const struct nfs_server *       server;
 979         struct nfs_fattr *              fattr;
 980         struct nfs_fh *                 fh;
 981         struct nfs4_label               *label;
 982 };
 983
 984 struct nfs4_lookup_root_arg {
 985         struct nfs4_sequence_args       seq_args;
 986         const u32 *                     bitmask;
 987 };
 988
 989 struct nfs4_pathconf_arg {
 990         struct nfs4_sequence_args       seq_args;
 991         const struct nfs_fh *           fh;
 992         const u32 *                     bitmask;
 993 };
 994
 995 struct nfs4_pathconf_res {
 996         struct nfs4_sequence_res        seq_res;
 997         struct nfs_pathconf            *pathconf;
 998 };
 999
1000 struct nfs4_readdir_arg {
1001         struct nfs4_sequence_args       seq_args;
1002         const struct nfs_fh *           fh;
1003         u64                             cookie;
1004         nfs4_verifier                   verifier;
1005         u32                             count;
1006         struct page **                  pages;  /* zero-copy data */
1007         unsigned int                    pgbase; /* zero-copy data */
1008         const u32 *                     bitmask;
1009         int                             plus;
1010 };
1011
1012 struct nfs4_readdir_res {
1013         struct nfs4_sequence_res        seq_res;
1014         nfs4_verifier                   verifier;
1015         unsigned int                    pgbase;
1016 };
1017
1018 struct nfs4_readlink {
1019         struct nfs4_sequence_args       seq_args;
1020         const struct nfs_fh *           fh;
1021         unsigned int                    pgbase;
1022         unsigned int                    pglen;   /* zero-copy data */
1023         struct page **                  pages;   /* zero-copy data */
1024 };
1025
1026 struct nfs4_readlink_res {
1027         struct nfs4_sequence_res        seq_res;
1028 };
1029
1030 struct nfs4_setclientid {
1031         const nfs4_verifier *           sc_verifier;
1032         u32                             sc_prog;
1033         unsigned int                    sc_netid_len;
1034         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
1035         unsigned int                    sc_uaddr_len;
1036         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1037         struct nfs_client               *sc_clnt;
1038         struct rpc_cred                 *sc_cred;
1039 };
1040
1041 struct nfs4_setclientid_res {
1042         u64                             clientid;
1043         nfs4_verifier                   confirm;
1044 };
1045
1046 struct nfs4_statfs_arg {
1047         struct nfs4_sequence_args       seq_args;
1048         const struct nfs_fh *           fh;
1049         const u32 *                     bitmask;
1050 };
1051
1052 struct nfs4_statfs_res {
1053         struct nfs4_sequence_res        seq_res;
1054         struct nfs_fsstat              *fsstat;
1055 };
1056
1057 struct nfs4_server_caps_arg {
1058         struct nfs4_sequence_args       seq_args;
1059         struct nfs_fh                  *fhandle;
1060         const u32 *                     bitmask;
1061 };
1062
1063 struct nfs4_server_caps_res {
1064         struct nfs4_sequence_res        seq_res;
1065         u32                             attr_bitmask[3];
1066         u32                             exclcreat_bitmask[3];
1067         u32                             acl_bitmask;
1068         u32                             has_links;
1069         u32                             has_symlinks;
1070         u32                             fh_expire_type;
1071 };
1072
1073 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1074 struct nfs4_pathname {
1075         unsigned int ncomponents;
1076         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1077 };
1078
1079 #define NFS4_FS_LOCATION_MAXSERVERS 10
1080 struct nfs4_fs_location {
1081         unsigned int nservers;
1082         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1083         struct nfs4_pathname rootpath;
1084 };
1085
1086 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1087 struct nfs4_fs_locations {
1088         struct nfs_fattr fattr;
1089         const struct nfs_server *server;
1090         struct nfs4_pathname fs_path;
1091         int nlocations;
1092         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1093 };
1094
1095 struct nfs4_fs_locations_arg {
1096         struct nfs4_sequence_args       seq_args;
1097         const struct nfs_fh *dir_fh;
1098         const struct nfs_fh *fh;
1099         const struct qstr *name;
1100         struct page *page;
1101         const u32 *bitmask;
1102         clientid4 clientid;
1103         unsigned char migration:1, renew:1;
1104 };
1105
1106 struct nfs4_fs_locations_res {
1107         struct nfs4_sequence_res        seq_res;
1108         struct nfs4_fs_locations       *fs_locations;
1109         unsigned char                   migration:1, renew:1;
1110 };
1111
1112 struct nfs4_secinfo4 {
1113         u32                     flavor;
1114         struct rpcsec_gss_info  flavor_info;
1115 };
1116
1117 struct nfs4_secinfo_flavors {
1118         unsigned int            num_flavors;
1119         struct nfs4_secinfo4    flavors[0];
1120 };
1121
1122 struct nfs4_secinfo_arg {
1123         struct nfs4_sequence_args       seq_args;
1124         const struct nfs_fh             *dir_fh;
1125         const struct qstr               *name;
1126 };
1127
1128 struct nfs4_secinfo_res {
1129         struct nfs4_sequence_res        seq_res;
1130         struct nfs4_secinfo_flavors     *flavors;
1131 };
1132
1133 struct nfs4_fsid_present_arg {
1134         struct nfs4_sequence_args       seq_args;
1135         const struct nfs_fh             *fh;
1136         clientid4                       clientid;
1137         unsigned char                   renew:1;
1138 };
1139
1140 struct nfs4_fsid_present_res {
1141         struct nfs4_sequence_res        seq_res;
1142         struct nfs_fh                   *fh;
1143         unsigned char                   renew:1;
1144 };
1145
1146 #endif /* CONFIG_NFS_V4 */
1147
1148 struct nfstime4 {
1149         u64     seconds;
1150         u32     nseconds;
1151 };
1152
1153 #ifdef CONFIG_NFS_V4_1
1154
1155 struct pnfs_commit_bucket {
1156         struct list_head written;
1157         struct list_head committing;
1158         struct pnfs_layout_segment *wlseg;
1159         struct pnfs_layout_segment *clseg;
1160         struct nfs_writeverf direct_verf;
1161 };
1162
1163 struct pnfs_ds_commit_info {
1164         int nwritten;
1165         int ncommitting;
1166         int nbuckets;
1167         struct pnfs_commit_bucket *buckets;
1168 };
1169
1170 #define NFS4_OP_MAP_NUM_LONGS \
1171         DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1172 #define NFS4_OP_MAP_NUM_WORDS \
1173         (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1174 struct nfs4_op_map {
1175         union {
1176                 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1177                 u32 words[NFS4_OP_MAP_NUM_WORDS];
1178         } u;
1179 };
1180
1181 struct nfs41_state_protection {
1182         u32 how;
1183         struct nfs4_op_map enforce;
1184         struct nfs4_op_map allow;
1185 };
1186
1187 struct nfs41_exchange_id_args {
1188         struct nfs_client               *client;
1189         nfs4_verifier                   *verifier;
1190         u32                             flags;
1191         struct nfs41_state_protection   state_protect;
1192 };
1193
1194 struct nfs41_server_owner {
1195         uint64_t                        minor_id;
1196         uint32_t                        major_id_sz;
1197         char                            major_id[NFS4_OPAQUE_LIMIT];
1198 };
1199
1200 struct nfs41_server_scope {
1201         uint32_t                        server_scope_sz;
1202         char                            server_scope[NFS4_OPAQUE_LIMIT];
1203 };
1204
1205 struct nfs41_impl_id {
1206         char                            domain[NFS4_OPAQUE_LIMIT + 1];
1207         char                            name[NFS4_OPAQUE_LIMIT + 1];
1208         struct nfstime4                 date;
1209 };
1210
1211 struct nfs41_bind_conn_to_session_args {
1212         struct nfs_client               *client;
1213         struct nfs4_sessionid           sessionid;
1214         u32                             dir;
1215         bool                            use_conn_in_rdma_mode;
1216 };
1217
1218 struct nfs41_bind_conn_to_session_res {
1219         struct nfs4_sessionid           sessionid;
1220         u32                             dir;
1221         bool                            use_conn_in_rdma_mode;
1222 };
1223
1224 struct nfs41_exchange_id_res {
1225         u64                             clientid;
1226         u32                             seqid;
1227         u32                             flags;
1228         struct nfs41_server_owner       *server_owner;
1229         struct nfs41_server_scope       *server_scope;
1230         struct nfs41_impl_id            *impl_id;
1231         struct nfs41_state_protection   state_protect;
1232 };
1233
1234 struct nfs41_create_session_args {
1235         struct nfs_client              *client;
1236         u64                             clientid;
1237         uint32_t                        seqid;
1238         uint32_t                        flags;
1239         uint32_t                        cb_program;
1240         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1241         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1242 };
1243
1244 struct nfs41_create_session_res {
1245         struct nfs4_sessionid           sessionid;
1246         uint32_t                        seqid;
1247         uint32_t                        flags;
1248         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1249         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1250 };
1251
1252 struct nfs41_reclaim_complete_args {
1253         struct nfs4_sequence_args       seq_args;
1254         /* In the future extend to include curr_fh for use with migration */
1255         unsigned char                   one_fs:1;
1256 };
1257
1258 struct nfs41_reclaim_complete_res {
1259         struct nfs4_sequence_res        seq_res;
1260 };
1261
1262 #define SECINFO_STYLE_CURRENT_FH 0
1263 #define SECINFO_STYLE_PARENT 1
1264 struct nfs41_secinfo_no_name_args {
1265         struct nfs4_sequence_args       seq_args;
1266         int                             style;
1267 };
1268
1269 struct nfs41_test_stateid_args {
1270         struct nfs4_sequence_args       seq_args;
1271         nfs4_stateid                    *stateid;
1272 };
1273
1274 struct nfs41_test_stateid_res {
1275         struct nfs4_sequence_res        seq_res;
1276         unsigned int                    status;
1277 };
1278
1279 struct nfs41_free_stateid_args {
1280         struct nfs4_sequence_args       seq_args;
1281         nfs4_stateid                    stateid;
1282 };
1283
1284 struct nfs41_free_stateid_res {
1285         struct nfs4_sequence_res        seq_res;
1286         unsigned int                    status;
1287 };
1288
1289 static inline void
1290 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1291 {
1292         kfree(cinfo->buckets);
1293 }
1294
1295 #else
1296
1297 struct pnfs_ds_commit_info {
1298 };
1299
1300 static inline void
1301 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1302 {
1303 }
1304
1305 #endif /* CONFIG_NFS_V4_1 */
1306
1307 #ifdef CONFIG_NFS_V4_2
1308 struct nfs42_falloc_args {
1309         struct nfs4_sequence_args       seq_args;
1310
1311         struct nfs_fh                   *falloc_fh;
1312         nfs4_stateid                     falloc_stateid;
1313         u64                              falloc_offset;
1314         u64                              falloc_length;
1315         const u32                       *falloc_bitmask;
1316 };
1317
1318 struct nfs42_falloc_res {
1319         struct nfs4_sequence_res        seq_res;
1320         unsigned int                    status;
1321
1322         struct nfs_fattr                *falloc_fattr;
1323         const struct nfs_server         *falloc_server;
1324 };
1325
1326 struct nfs42_seek_args {
1327         struct nfs4_sequence_args       seq_args;
1328
1329         struct nfs_fh                   *sa_fh;
1330         nfs4_stateid                    sa_stateid;
1331         u64                             sa_offset;
1332         u32                             sa_what;
1333 };
1334
1335 struct nfs42_seek_res {
1336         struct nfs4_sequence_res        seq_res;
1337         unsigned int                    status;
1338
1339         u32     sr_eof;
1340         u64     sr_offset;
1341 };
1342 #endif
1343
1344 struct nfs_page;
1345
1346 #define NFS_PAGEVEC_SIZE        (8U)
1347
1348 struct nfs_page_array {
1349         struct page             **pagevec;
1350         unsigned int            npages;         /* Max length of pagevec */
1351         struct page             *page_array[NFS_PAGEVEC_SIZE];
1352 };
1353
1354 /* used as flag bits in nfs_pgio_header */
1355 enum {
1356         NFS_IOHDR_ERROR = 0,
1357         NFS_IOHDR_EOF,
1358         NFS_IOHDR_REDO,
1359 };
1360
1361 struct nfs_pgio_header {
1362         struct inode            *inode;
1363         struct rpc_cred         *cred;
1364         struct list_head        pages;
1365         struct nfs_page         *req;
1366         struct nfs_writeverf    verf;           /* Used for writes */
1367         struct pnfs_layout_segment *lseg;
1368         loff_t                  io_start;
1369         const struct rpc_call_ops *mds_ops;
1370         void (*release) (struct nfs_pgio_header *hdr);
1371         const struct nfs_pgio_completion_ops *completion_ops;
1372         const struct nfs_rw_ops *rw_ops;
1373         struct nfs_direct_req   *dreq;
1374         void                    *layout_private;
1375         spinlock_t              lock;
1376         /* fields protected by lock */
1377         int                     pnfs_error;
1378         int                     error;          /* merge with pnfs_error */
1379         unsigned long           good_bytes;     /* boundary of good data */
1380         unsigned long           flags;
1381
1382         /*
1383          * rpc data
1384          */
1385         struct rpc_task         task;
1386         struct nfs_fattr        fattr;
1387         struct nfs_pgio_args    args;           /* argument struct */
1388         struct nfs_pgio_res     res;            /* result struct */
1389         unsigned long           timestamp;      /* For lease renewal */
1390         int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1391         __u64                   mds_offset;     /* Filelayout dense stripe */
1392         struct nfs_page_array   page_array;
1393         struct nfs_client       *ds_clp;        /* pNFS data server */
1394         int                     ds_commit_idx;  /* ds index if ds_clp is set */
1395         int                     pgio_mirror_idx;/* mirror index in pgio layer */
1396 };
1397
1398 struct nfs_mds_commit_info {
1399         atomic_t rpcs_out;
1400         unsigned long           ncommit;
1401         struct list_head        list;
1402 };
1403
1404 struct nfs_commit_data;
1405 struct nfs_inode;
1406 struct nfs_commit_completion_ops {
1407         void (*error_cleanup) (struct nfs_inode *nfsi);
1408         void (*completion) (struct nfs_commit_data *data);
1409 };
1410
1411 struct nfs_commit_info {
1412         spinlock_t                      *lock;  /* inode->i_lock */
1413         struct nfs_mds_commit_info      *mds;
1414         struct pnfs_ds_commit_info      *ds;
1415         struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1416         const struct nfs_commit_completion_ops *completion_ops;
1417 };
1418
1419 struct nfs_commit_data {
1420         struct rpc_task         task;
1421         struct inode            *inode;
1422         struct rpc_cred         *cred;
1423         struct nfs_fattr        fattr;
1424         struct nfs_writeverf    verf;
1425         struct list_head        pages;          /* Coalesced requests we wish to flush */
1426         struct list_head        list;           /* lists of struct nfs_write_data */
1427         struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1428         struct nfs_commitargs   args;           /* argument struct */
1429         struct nfs_commitres    res;            /* result struct */
1430         struct nfs_open_context *context;
1431         struct pnfs_layout_segment *lseg;
1432         struct nfs_client       *ds_clp;        /* pNFS data server */
1433         int                     ds_commit_index;
1434         loff_t                  lwb;
1435         const struct rpc_call_ops *mds_ops;
1436         const struct nfs_commit_completion_ops *completion_ops;
1437         int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1438 };
1439
1440 struct nfs_pgio_completion_ops {
1441         void    (*error_cleanup)(struct list_head *head);
1442         void    (*init_hdr)(struct nfs_pgio_header *hdr);
1443         void    (*completion)(struct nfs_pgio_header *hdr);
1444 };
1445
1446 struct nfs_unlinkdata {
1447         struct hlist_node list;
1448         struct nfs_removeargs args;
1449         struct nfs_removeres res;
1450         struct inode *dir;
1451         struct rpc_cred *cred;
1452         struct nfs_fattr dir_attr;
1453         long timeout;
1454 };
1455
1456 struct nfs_renamedata {
1457         struct nfs_renameargs   args;
1458         struct nfs_renameres    res;
1459         struct rpc_cred         *cred;
1460         struct inode            *old_dir;
1461         struct dentry           *old_dentry;
1462         struct nfs_fattr        old_fattr;
1463         struct inode            *new_dir;
1464         struct dentry           *new_dentry;
1465         struct nfs_fattr        new_fattr;
1466         void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1467         long timeout;
1468 };
1469
1470 struct nfs_access_entry;
1471 struct nfs_client;
1472 struct rpc_timeout;
1473 struct nfs_subversion;
1474 struct nfs_mount_info;
1475 struct nfs_client_initdata;
1476 struct nfs_pageio_descriptor;
1477
1478 /*
1479  * RPC procedure vector for NFSv2/NFSv3 demuxing
1480  */
1481 struct nfs_rpc_ops {
1482         u32     version;                /* Protocol version */
1483         const struct dentry_operations *dentry_ops;
1484         const struct inode_operations *dir_inode_ops;
1485         const struct inode_operations *file_inode_ops;
1486         const struct file_operations *file_ops;
1487
1488         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1489                             struct nfs_fsinfo *);
1490         struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1491                                       struct nfs_fh *, struct nfs_fattr *);
1492         struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1493                                      struct nfs_subversion *);
1494         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1495                             struct nfs_fattr *, struct nfs4_label *);
1496         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1497                             struct iattr *);
1498         int     (*lookup)  (struct inode *, struct qstr *,
1499                             struct nfs_fh *, struct nfs_fattr *,
1500                             struct nfs4_label *);
1501         int     (*access)  (struct inode *, struct nfs_access_entry *);
1502         int     (*readlink)(struct inode *, struct page *, unsigned int,
1503                             unsigned int);
1504         int     (*create)  (struct inode *, struct dentry *,
1505                             struct iattr *, int);
1506         int     (*remove)  (struct inode *, struct qstr *);
1507         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1508         void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1509         int     (*unlink_done) (struct rpc_task *, struct inode *);
1510         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1511         void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1512         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1513         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1514         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1515                             unsigned int, struct iattr *);
1516         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1517         int     (*rmdir)   (struct inode *, struct qstr *);
1518         int     (*readdir) (struct dentry *, struct rpc_cred *,
1519                             u64, struct page **, unsigned int, int);
1520         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1521                             dev_t);
1522         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1523                             struct nfs_fsstat *);
1524         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1525                             struct nfs_fsinfo *);
1526         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1527                              struct nfs_pathconf *);
1528         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1529         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1530         int     (*pgio_rpc_prepare)(struct rpc_task *,
1531                                     struct nfs_pgio_header *);
1532         void    (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1533         int     (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1534         void    (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1535         int     (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1536         void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1537         void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1538         int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1539         int     (*lock)(struct file *, int, struct file_lock *);
1540         int     (*lock_check_bounds)(const struct file_lock *);
1541         void    (*clear_acl_cache)(struct inode *);
1542         void    (*close_context)(struct nfs_open_context *ctx, int);
1543         struct inode * (*open_context) (struct inode *dir,
1544                                 struct nfs_open_context *ctx,
1545                                 int open_flags,
1546                                 struct iattr *iattr,
1547                                 int *);
1548         int (*have_delegation)(struct inode *, fmode_t);
1549         int (*return_delegation)(struct inode *);
1550         struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1551         struct nfs_client *
1552                 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1553                                 const char *);
1554         void    (*free_client) (struct nfs_client *);
1555         struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1556         struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1557                                            struct nfs_fattr *, rpc_authflavor_t);
1558 };
1559
1560 /*
1561  *      NFS_CALL(getattr, inode, (fattr));
1562  * into
1563  *      NFS_PROTO(inode)->getattr(fattr);
1564  */
1565 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1566
1567 /*
1568  * Function vectors etc. for the NFS client
1569  */
1570 extern const struct nfs_rpc_ops nfs_v2_clientops;
1571 extern const struct nfs_rpc_ops nfs_v3_clientops;
1572 extern const struct nfs_rpc_ops nfs_v4_clientops;
1573 extern const struct rpc_version nfs_version2;
1574 extern const struct rpc_version nfs_version3;
1575 extern const struct rpc_version nfs_version4;
1576
1577 extern const struct rpc_version nfsacl_version3;
1578 extern const struct rpc_program nfsacl_program;
1579
1580 #endif