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/nfs3.h>
   6 #include <linux/sunrpc/gss_api.h>
   7
   8 /*
   9  * To change the maximum rsize and wsize supported by the NFS client, adjust
  10  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  11  * support a megabyte or more.  The default is left at 4096 bytes, which is
  12  * reasonable for NFS over UDP.
  13  */
  14 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  15 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  16 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  17
  18 /* Forward declaration for NFS v3 */
  19 struct nfs4_secinfo_flavors;
  20
  21 struct nfs_fsid {
  22         uint64_t                major;
  23         uint64_t                minor;
  24 };
  25
  26 /*
  27  * Helper for checking equality between 2 fsids.
  28  */
  29 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  30 {
  31         return a->major == b->major && a->minor == b->minor;
  32 }
  33
  34 struct nfs_fattr {
  35         unsigned int            valid;          /* which fields are valid */
  36         umode_t                 mode;
  37         __u32                   nlink;
  38         __u32                   uid;
  39         __u32                   gid;
  40         dev_t                   rdev;
  41         __u64                   size;
  42         union {
  43                 struct {
  44                         __u32   blocksize;
  45                         __u32   blocks;
  46                 } nfs2;
  47                 struct {
  48                         __u64   used;
  49                 } nfs3;
  50         } du;
  51         struct nfs_fsid         fsid;
  52         __u64                   fileid;
  53         __u64                   mounted_on_fileid;
  54         struct timespec         atime;
  55         struct timespec         mtime;
  56         struct timespec         ctime;
  57         __u64                   change_attr;    /* NFSv4 change attribute */
  58         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  59         __u64                   pre_size;       /* pre_op_attr.size       */
  60         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  61         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  62         unsigned long           time_start;
  63         unsigned long           gencount;
  64 };
  65
  66 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  67 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  68 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  69 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  70 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  71 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  72 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  73 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  74 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  75 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  76 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  77 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  78 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  79 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  80 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  81 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  82 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  83 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  84 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  85 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  86 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 20)      /* Treat as mountpoint */
  87 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID                (1U << 21)
  88
  89 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  90                 | NFS_ATTR_FATTR_MODE \
  91                 | NFS_ATTR_FATTR_NLINK \
  92                 | NFS_ATTR_FATTR_OWNER \
  93                 | NFS_ATTR_FATTR_GROUP \
  94                 | NFS_ATTR_FATTR_RDEV \
  95                 | NFS_ATTR_FATTR_SIZE \
  96                 | NFS_ATTR_FATTR_FSID \
  97                 | NFS_ATTR_FATTR_FILEID \
  98                 | NFS_ATTR_FATTR_ATIME \
  99                 | NFS_ATTR_FATTR_MTIME \
 100                 | NFS_ATTR_FATTR_CTIME)
 101 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 102                 | NFS_ATTR_FATTR_BLOCKS_USED)
 103 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 104                 | NFS_ATTR_FATTR_SPACE_USED)
 105 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 106                 | NFS_ATTR_FATTR_SPACE_USED \
 107                 | NFS_ATTR_FATTR_CHANGE)
 108
 109 /*
 110  * Info on the file system
 111  */
 112 struct nfs_fsinfo {
 113         struct nfs_fattr        *fattr; /* Post-op attributes */
 114         __u32                   rtmax;  /* max.  read transfer size */
 115         __u32                   rtpref; /* pref. read transfer size */
 116         __u32                   rtmult; /* reads should be multiple of this */
 117         __u32                   wtmax;  /* max.  write transfer size */
 118         __u32                   wtpref; /* pref. write transfer size */
 119         __u32                   wtmult; /* writes should be multiple of this */
 120         __u32                   dtpref; /* pref. readdir transfer size */
 121         __u64                   maxfilesize;
 122         struct timespec         time_delta; /* server time granularity */
 123         __u32                   lease_time; /* in seconds */
 124         __u32                   layouttype; /* supported pnfs layout driver */
 125 };
 126
 127 struct nfs_fsstat {
 128         struct nfs_fattr        *fattr; /* Post-op attributes */
 129         __u64                   tbytes; /* total size in bytes */
 130         __u64                   fbytes; /* # of free bytes */
 131         __u64                   abytes; /* # of bytes available to user */
 132         __u64                   tfiles; /* # of files */
 133         __u64                   ffiles; /* # of free files */
 134         __u64                   afiles; /* # of files available to user */
 135 };
 136
 137 struct nfs2_fsstat {
 138         __u32                   tsize;  /* Server transfer size */
 139         __u32                   bsize;  /* Filesystem block size */
 140         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 141         __u32                   bfree;  /* No. of free "bsize" blocks */
 142         __u32                   bavail; /* No. of available "bsize" blocks */
 143 };
 144
 145 struct nfs_pathconf {
 146         struct nfs_fattr        *fattr; /* Post-op attributes */
 147         __u32                   max_link; /* max # of hard links */
 148         __u32                   max_namelen; /* max name length */
 149 };
 150
 151 struct nfs4_change_info {
 152         u32                     atomic;
 153         u64                     before;
 154         u64                     after;
 155 };
 156
 157 struct nfs_seqid;
 158
 159 /* nfs41 sessions channel attributes */
 160 struct nfs4_channel_attrs {
 161         u32                     max_rqst_sz;
 162         u32                     max_resp_sz;
 163         u32                     max_resp_sz_cached;
 164         u32                     max_ops;
 165         u32                     max_reqs;
 166 };
 167
 168 /* nfs41 sessions slot seqid */
 169 struct nfs4_slot {
 170         u32                     seq_nr;
 171 };
 172
 173 struct nfs4_sequence_args {
 174         struct nfs4_session     *sa_session;
 175         u8                      sa_slotid;
 176         u8                      sa_cache_this;
 177 };
 178
 179 struct nfs4_sequence_res {
 180         struct nfs4_session     *sr_session;
 181         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 182         int                     sr_status;      /* sequence operation status */
 183         unsigned long           sr_renewal_time;
 184         u32                     sr_status_flags;
 185 };
 186
 187 struct nfs4_get_lease_time_args {
 188         struct nfs4_sequence_args       la_seq_args;
 189 };
 190
 191 struct nfs4_get_lease_time_res {
 192         struct nfs_fsinfo              *lr_fsinfo;
 193         struct nfs4_sequence_res        lr_seq_res;
 194 };
 195
 196 #define PNFS_LAYOUT_MAXSIZE 4096
 197
 198 struct nfs4_layoutdriver_data {
 199         struct page **pages;
 200         __u32 pglen;
 201         __u32 len;
 202 };
 203
 204 struct pnfs_layout_range {
 205         u32 iomode;
 206         u64 offset;
 207         u64 length;
 208 };
 209
 210 struct nfs4_layoutget_args {
 211         __u32 type;
 212         struct pnfs_layout_range range;
 213         __u64 minlength;
 214         __u32 maxcount;
 215         struct inode *inode;
 216         struct nfs_open_context *ctx;
 217         struct nfs4_sequence_args seq_args;
 218         nfs4_stateid stateid;
 219         struct nfs4_layoutdriver_data layout;
 220 };
 221
 222 struct nfs4_layoutget_res {
 223         __u32 return_on_close;
 224         struct pnfs_layout_range range;
 225         __u32 type;
 226         nfs4_stateid stateid;
 227         struct nfs4_sequence_res seq_res;
 228         struct nfs4_layoutdriver_data *layoutp;
 229 };
 230
 231 struct nfs4_layoutget {
 232         struct nfs4_layoutget_args args;
 233         struct nfs4_layoutget_res res;
 234         struct pnfs_layout_segment **lsegpp;
 235         gfp_t gfp_flags;
 236 };
 237
 238 struct nfs4_getdevicelist_args {
 239         const struct nfs_fh *fh;
 240         u32 layoutclass;
 241         struct nfs4_sequence_args seq_args;
 242 };
 243
 244 struct nfs4_getdevicelist_res {
 245         struct pnfs_devicelist *devlist;
 246         struct nfs4_sequence_res seq_res;
 247 };
 248
 249 struct nfs4_getdeviceinfo_args {
 250         struct pnfs_device *pdev;
 251         struct nfs4_sequence_args seq_args;
 252 };
 253
 254 struct nfs4_getdeviceinfo_res {
 255         struct pnfs_device *pdev;
 256         struct nfs4_sequence_res seq_res;
 257 };
 258
 259 struct nfs4_layoutcommit_args {
 260         nfs4_stateid stateid;
 261         __u64 lastbytewritten;
 262         struct inode *inode;
 263         const u32 *bitmask;
 264         struct nfs4_sequence_args seq_args;
 265 };
 266
 267 struct nfs4_layoutcommit_res {
 268         struct nfs_fattr *fattr;
 269         const struct nfs_server *server;
 270         struct nfs4_sequence_res seq_res;
 271 };
 272
 273 struct nfs4_layoutcommit_data {
 274         struct rpc_task task;
 275         struct nfs_fattr fattr;
 276         struct list_head lseg_list;
 277         struct rpc_cred *cred;
 278         struct nfs4_layoutcommit_args args;
 279         struct nfs4_layoutcommit_res res;
 280 };
 281
 282 struct nfs4_layoutreturn_args {
 283         struct pnfs_layout_hdr *layout;
 284         struct inode *inode;
 285         nfs4_stateid stateid;
 286         __u32   layout_type;
 287         struct nfs4_sequence_args seq_args;
 288 };
 289
 290 struct nfs4_layoutreturn_res {
 291         struct nfs4_sequence_res seq_res;
 292         u32 lrs_present;
 293         nfs4_stateid stateid;
 294 };
 295
 296 struct nfs4_layoutreturn {
 297         struct nfs4_layoutreturn_args args;
 298         struct nfs4_layoutreturn_res res;
 299         struct rpc_cred *cred;
 300         struct nfs_client *clp;
 301         int rpc_status;
 302 };
 303
 304 /*
 305  * Arguments to the open call.
 306  */
 307 struct nfs_openargs {
 308         const struct nfs_fh *   fh;
 309         struct nfs_seqid *      seqid;
 310         int                     open_flags;
 311         fmode_t                 fmode;
 312         __u64                   clientid;
 313         __u64                   id;
 314         union {
 315                 struct {
 316                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 317                         nfs4_verifier   verifier; /* EXCLUSIVE */
 318                 };
 319                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 320                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 321         } u;
 322         const struct qstr *     name;
 323         const struct nfs_server *server;         /* Needed for ID mapping */
 324         const u32 *             bitmask;
 325         __u32                   claim;
 326         struct nfs4_sequence_args       seq_args;
 327 };
 328
 329 struct nfs_openres {
 330         nfs4_stateid            stateid;
 331         struct nfs_fh           fh;
 332         struct nfs4_change_info cinfo;
 333         __u32                   rflags;
 334         struct nfs_fattr *      f_attr;
 335         struct nfs_fattr *      dir_attr;
 336         struct nfs_seqid *      seqid;
 337         const struct nfs_server *server;
 338         fmode_t                 delegation_type;
 339         nfs4_stateid            delegation;
 340         __u32                   do_recall;
 341         __u64                   maxsize;
 342         __u32                   attrset[NFS4_BITMAP_SIZE];
 343         struct nfs4_sequence_res        seq_res;
 344 };
 345
 346 /*
 347  * Arguments to the open_confirm call.
 348  */
 349 struct nfs_open_confirmargs {
 350         const struct nfs_fh *   fh;
 351         nfs4_stateid *          stateid;
 352         struct nfs_seqid *      seqid;
 353 };
 354
 355 struct nfs_open_confirmres {
 356         nfs4_stateid            stateid;
 357         struct nfs_seqid *      seqid;
 358 };
 359
 360 /*
 361  * Arguments to the close call.
 362  */
 363 struct nfs_closeargs {
 364         struct nfs_fh *         fh;
 365         nfs4_stateid *          stateid;
 366         struct nfs_seqid *      seqid;
 367         fmode_t                 fmode;
 368         const u32 *             bitmask;
 369         struct nfs4_sequence_args       seq_args;
 370 };
 371
 372 struct nfs_closeres {
 373         nfs4_stateid            stateid;
 374         struct nfs_fattr *      fattr;
 375         struct nfs_seqid *      seqid;
 376         const struct nfs_server *server;
 377         struct nfs4_sequence_res        seq_res;
 378 };
 379 /*
 380  *  * Arguments to the lock,lockt, and locku call.
 381  *   */
 382 struct nfs_lowner {
 383         __u64                   clientid;
 384         __u64                   id;
 385         dev_t                   s_dev;
 386 };
 387
 388 struct nfs_lock_args {
 389         struct nfs_fh *         fh;
 390         struct file_lock *      fl;
 391         struct nfs_seqid *      lock_seqid;
 392         nfs4_stateid *          lock_stateid;
 393         struct nfs_seqid *      open_seqid;
 394         nfs4_stateid *          open_stateid;
 395         struct nfs_lowner       lock_owner;
 396         unsigned char           block : 1;
 397         unsigned char           reclaim : 1;
 398         unsigned char           new_lock_owner : 1;
 399         struct nfs4_sequence_args       seq_args;
 400 };
 401
 402 struct nfs_lock_res {
 403         nfs4_stateid            stateid;
 404         struct nfs_seqid *      lock_seqid;
 405         struct nfs_seqid *      open_seqid;
 406         struct nfs4_sequence_res        seq_res;
 407 };
 408
 409 struct nfs_locku_args {
 410         struct nfs_fh *         fh;
 411         struct file_lock *      fl;
 412         struct nfs_seqid *      seqid;
 413         nfs4_stateid *          stateid;
 414         struct nfs4_sequence_args       seq_args;
 415 };
 416
 417 struct nfs_locku_res {
 418         nfs4_stateid            stateid;
 419         struct nfs_seqid *      seqid;
 420         struct nfs4_sequence_res        seq_res;
 421 };
 422
 423 struct nfs_lockt_args {
 424         struct nfs_fh *         fh;
 425         struct file_lock *      fl;
 426         struct nfs_lowner       lock_owner;
 427         struct nfs4_sequence_args       seq_args;
 428 };
 429
 430 struct nfs_lockt_res {
 431         struct file_lock *      denied; /* LOCK, LOCKT failed */
 432         struct nfs4_sequence_res        seq_res;
 433 };
 434
 435 struct nfs_release_lockowner_args {
 436         struct nfs_lowner       lock_owner;
 437 };
 438
 439 struct nfs4_delegreturnargs {
 440         const struct nfs_fh *fhandle;
 441         const nfs4_stateid *stateid;
 442         const u32 * bitmask;
 443         struct nfs4_sequence_args       seq_args;
 444 };
 445
 446 struct nfs4_delegreturnres {
 447         struct nfs_fattr * fattr;
 448         const struct nfs_server *server;
 449         struct nfs4_sequence_res        seq_res;
 450 };
 451
 452 /*
 453  * Arguments to the read call.
 454  */
 455 struct nfs_readargs {
 456         struct nfs_fh *         fh;
 457         struct nfs_open_context *context;
 458         struct nfs_lock_context *lock_context;
 459         __u64                   offset;
 460         __u32                   count;
 461         unsigned int            pgbase;
 462         struct page **          pages;
 463         struct nfs4_sequence_args       seq_args;
 464 };
 465
 466 struct nfs_readres {
 467         struct nfs_fattr *      fattr;
 468         __u32                   count;
 469         int                     eof;
 470         struct nfs4_sequence_res        seq_res;
 471 };
 472
 473 /*
 474  * Arguments to the write call.
 475  */
 476 struct nfs_writeargs {
 477         struct nfs_fh *         fh;
 478         struct nfs_open_context *context;
 479         struct nfs_lock_context *lock_context;
 480         __u64                   offset;
 481         __u32                   count;
 482         enum nfs3_stable_how    stable;
 483         unsigned int            pgbase;
 484         struct page **          pages;
 485         const u32 *             bitmask;
 486         struct nfs4_sequence_args       seq_args;
 487 };
 488
 489 struct nfs_writeverf {
 490         enum nfs3_stable_how    committed;
 491         __be32                  verifier[2];
 492 };
 493
 494 struct nfs_writeres {
 495         struct nfs_fattr *      fattr;
 496         struct nfs_writeverf *  verf;
 497         __u32                   count;
 498         const struct nfs_server *server;
 499         struct nfs4_sequence_res        seq_res;
 500 };
 501
 502 /*
 503  * Common arguments to the unlink call
 504  */
 505 struct nfs_removeargs {
 506         const struct nfs_fh     *fh;
 507         struct qstr             name;
 508         const u32 *             bitmask;
 509         struct nfs4_sequence_args       seq_args;
 510 };
 511
 512 struct nfs_removeres {
 513         const struct nfs_server *server;
 514         struct nfs_fattr        *dir_attr;
 515         struct nfs4_change_info cinfo;
 516         struct nfs4_sequence_res        seq_res;
 517 };
 518
 519 /*
 520  * Common arguments to the rename call
 521  */
 522 struct nfs_renameargs {
 523         const struct nfs_fh             *old_dir;
 524         const struct nfs_fh             *new_dir;
 525         const struct qstr               *old_name;
 526         const struct qstr               *new_name;
 527         const u32                       *bitmask;
 528         struct nfs4_sequence_args       seq_args;
 529 };
 530
 531 struct nfs_renameres {
 532         const struct nfs_server         *server;
 533         struct nfs4_change_info         old_cinfo;
 534         struct nfs_fattr                *old_fattr;
 535         struct nfs4_change_info         new_cinfo;
 536         struct nfs_fattr                *new_fattr;
 537         struct nfs4_sequence_res        seq_res;
 538 };
 539
 540 /*
 541  * Argument struct for decode_entry function
 542  */
 543 struct nfs_entry {
 544         __u64                   ino;
 545         __u64                   cookie,
 546                                 prev_cookie;
 547         const char *            name;
 548         unsigned int            len;
 549         int                     eof;
 550         struct nfs_fh *         fh;
 551         struct nfs_fattr *      fattr;
 552         unsigned char           d_type;
 553         struct nfs_server *     server;
 554 };
 555
 556 /*
 557  * The following types are for NFSv2 only.
 558  */
 559 struct nfs_sattrargs {
 560         struct nfs_fh *         fh;
 561         struct iattr *          sattr;
 562 };
 563
 564 struct nfs_diropargs {
 565         struct nfs_fh *         fh;
 566         const char *            name;
 567         unsigned int            len;
 568 };
 569
 570 struct nfs_createargs {
 571         struct nfs_fh *         fh;
 572         const char *            name;
 573         unsigned int            len;
 574         struct iattr *          sattr;
 575 };
 576
 577 struct nfs_setattrargs {
 578         struct nfs_fh *                 fh;
 579         nfs4_stateid                    stateid;
 580         struct iattr *                  iap;
 581         const struct nfs_server *       server; /* Needed for name mapping */
 582         const u32 *                     bitmask;
 583         struct nfs4_sequence_args       seq_args;
 584 };
 585
 586 struct nfs_setaclargs {
 587         struct nfs_fh *                 fh;
 588         size_t                          acl_len;
 589         unsigned int                    acl_pgbase;
 590         struct page **                  acl_pages;
 591         struct nfs4_sequence_args       seq_args;
 592 };
 593
 594 struct nfs_setaclres {
 595         struct nfs4_sequence_res        seq_res;
 596 };
 597
 598 struct nfs_getaclargs {
 599         struct nfs_fh *                 fh;
 600         size_t                          acl_len;
 601         unsigned int                    acl_pgbase;
 602         struct page **                  acl_pages;
 603         struct nfs4_sequence_args       seq_args;
 604 };
 605
 606 struct nfs_getaclres {
 607         size_t                          acl_len;
 608         struct nfs4_sequence_res        seq_res;
 609 };
 610
 611 struct nfs_setattrres {
 612         struct nfs_fattr *              fattr;
 613         const struct nfs_server *       server;
 614         struct nfs4_sequence_res        seq_res;
 615 };
 616
 617 struct nfs_linkargs {
 618         struct nfs_fh *         fromfh;
 619         struct nfs_fh *         tofh;
 620         const char *            toname;
 621         unsigned int            tolen;
 622 };
 623
 624 struct nfs_symlinkargs {
 625         struct nfs_fh *         fromfh;
 626         const char *            fromname;
 627         unsigned int            fromlen;
 628         struct page **          pages;
 629         unsigned int            pathlen;
 630         struct iattr *          sattr;
 631 };
 632
 633 struct nfs_readdirargs {
 634         struct nfs_fh *         fh;
 635         __u32                   cookie;
 636         unsigned int            count;
 637         struct page **          pages;
 638 };
 639
 640 struct nfs3_getaclargs {
 641         struct nfs_fh *         fh;
 642         int                     mask;
 643         struct page **          pages;
 644 };
 645
 646 struct nfs3_setaclargs {
 647         struct inode *          inode;
 648         int                     mask;
 649         struct posix_acl *      acl_access;
 650         struct posix_acl *      acl_default;
 651         size_t                  len;
 652         unsigned int            npages;
 653         struct page **          pages;
 654 };
 655
 656 struct nfs_diropok {
 657         struct nfs_fh *         fh;
 658         struct nfs_fattr *      fattr;
 659 };
 660
 661 struct nfs_readlinkargs {
 662         struct nfs_fh *         fh;
 663         unsigned int            pgbase;
 664         unsigned int            pglen;
 665         struct page **          pages;
 666 };
 667
 668 struct nfs3_sattrargs {
 669         struct nfs_fh *         fh;
 670         struct iattr *          sattr;
 671         unsigned int            guard;
 672         struct timespec         guardtime;
 673 };
 674
 675 struct nfs3_diropargs {
 676         struct nfs_fh *         fh;
 677         const char *            name;
 678         unsigned int            len;
 679 };
 680
 681 struct nfs3_accessargs {
 682         struct nfs_fh *         fh;
 683         __u32                   access;
 684 };
 685
 686 struct nfs3_createargs {
 687         struct nfs_fh *         fh;
 688         const char *            name;
 689         unsigned int            len;
 690         struct iattr *          sattr;
 691         enum nfs3_createmode    createmode;
 692         __be32                  verifier[2];
 693 };
 694
 695 struct nfs3_mkdirargs {
 696         struct nfs_fh *         fh;
 697         const char *            name;
 698         unsigned int            len;
 699         struct iattr *          sattr;
 700 };
 701
 702 struct nfs3_symlinkargs {
 703         struct nfs_fh *         fromfh;
 704         const char *            fromname;
 705         unsigned int            fromlen;
 706         struct page **          pages;
 707         unsigned int            pathlen;
 708         struct iattr *          sattr;
 709 };
 710
 711 struct nfs3_mknodargs {
 712         struct nfs_fh *         fh;
 713         const char *            name;
 714         unsigned int            len;
 715         enum nfs3_ftype         type;
 716         struct iattr *          sattr;
 717         dev_t                   rdev;
 718 };
 719
 720 struct nfs3_linkargs {
 721         struct nfs_fh *         fromfh;
 722         struct nfs_fh *         tofh;
 723         const char *            toname;
 724         unsigned int            tolen;
 725 };
 726
 727 struct nfs3_readdirargs {
 728         struct nfs_fh *         fh;
 729         __u64                   cookie;
 730         __be32                  verf[2];
 731         int                     plus;
 732         unsigned int            count;
 733         struct page **          pages;
 734 };
 735
 736 struct nfs3_diropres {
 737         struct nfs_fattr *      dir_attr;
 738         struct nfs_fh *         fh;
 739         struct nfs_fattr *      fattr;
 740 };
 741
 742 struct nfs3_accessres {
 743         struct nfs_fattr *      fattr;
 744         __u32                   access;
 745 };
 746
 747 struct nfs3_readlinkargs {
 748         struct nfs_fh *         fh;
 749         unsigned int            pgbase;
 750         unsigned int            pglen;
 751         struct page **          pages;
 752 };
 753
 754 struct nfs3_linkres {
 755         struct nfs_fattr *      dir_attr;
 756         struct nfs_fattr *      fattr;
 757 };
 758
 759 struct nfs3_readdirres {
 760         struct nfs_fattr *      dir_attr;
 761         __be32 *                verf;
 762         int                     plus;
 763 };
 764
 765 struct nfs3_getaclres {
 766         struct nfs_fattr *      fattr;
 767         int                     mask;
 768         unsigned int            acl_access_count;
 769         unsigned int            acl_default_count;
 770         struct posix_acl *      acl_access;
 771         struct posix_acl *      acl_default;
 772 };
 773
 774 #ifdef CONFIG_NFS_V4
 775
 776 typedef u64 clientid4;
 777
 778 struct nfs4_accessargs {
 779         const struct nfs_fh *           fh;
 780         const u32 *                     bitmask;
 781         u32                             access;
 782         struct nfs4_sequence_args       seq_args;
 783 };
 784
 785 struct nfs4_accessres {
 786         const struct nfs_server *       server;
 787         struct nfs_fattr *              fattr;
 788         u32                             supported;
 789         u32                             access;
 790         struct nfs4_sequence_res        seq_res;
 791 };
 792
 793 struct nfs4_create_arg {
 794         u32                             ftype;
 795         union {
 796                 struct {
 797                         struct page **  pages;
 798                         unsigned int    len;
 799                 } symlink;   /* NF4LNK */
 800                 struct {
 801                         u32             specdata1;
 802                         u32             specdata2;
 803                 } device;    /* NF4BLK, NF4CHR */
 804         } u;
 805         const struct qstr *             name;
 806         const struct nfs_server *       server;
 807         const struct iattr *            attrs;
 808         const struct nfs_fh *           dir_fh;
 809         const u32 *                     bitmask;
 810         struct nfs4_sequence_args       seq_args;
 811 };
 812
 813 struct nfs4_create_res {
 814         const struct nfs_server *       server;
 815         struct nfs_fh *                 fh;
 816         struct nfs_fattr *              fattr;
 817         struct nfs4_change_info         dir_cinfo;
 818         struct nfs_fattr *              dir_fattr;
 819         struct nfs4_sequence_res        seq_res;
 820 };
 821
 822 struct nfs4_fsinfo_arg {
 823         const struct nfs_fh *           fh;
 824         const u32 *                     bitmask;
 825         struct nfs4_sequence_args       seq_args;
 826 };
 827
 828 struct nfs4_fsinfo_res {
 829         struct nfs_fsinfo              *fsinfo;
 830         struct nfs4_sequence_res        seq_res;
 831 };
 832
 833 struct nfs4_getattr_arg {
 834         const struct nfs_fh *           fh;
 835         const u32 *                     bitmask;
 836         struct nfs4_sequence_args       seq_args;
 837 };
 838
 839 struct nfs4_getattr_res {
 840         const struct nfs_server *       server;
 841         struct nfs_fattr *              fattr;
 842         struct nfs4_sequence_res        seq_res;
 843 };
 844
 845 struct nfs4_link_arg {
 846         const struct nfs_fh *           fh;
 847         const struct nfs_fh *           dir_fh;
 848         const struct qstr *             name;
 849         const u32 *                     bitmask;
 850         struct nfs4_sequence_args       seq_args;
 851 };
 852
 853 struct nfs4_link_res {
 854         const struct nfs_server *       server;
 855         struct nfs_fattr *              fattr;
 856         struct nfs4_change_info         cinfo;
 857         struct nfs_fattr *              dir_attr;
 858         struct nfs4_sequence_res        seq_res;
 859 };
 860
 861
 862 struct nfs4_lookup_arg {
 863         const struct nfs_fh *           dir_fh;
 864         const struct qstr *             name;
 865         const u32 *                     bitmask;
 866         struct nfs4_sequence_args       seq_args;
 867 };
 868
 869 struct nfs4_lookup_res {
 870         const struct nfs_server *       server;
 871         struct nfs_fattr *              fattr;
 872         struct nfs_fh *                 fh;
 873         struct nfs4_sequence_res        seq_res;
 874 };
 875
 876 struct nfs4_lookup_root_arg {
 877         const u32 *                     bitmask;
 878         struct nfs4_sequence_args       seq_args;
 879 };
 880
 881 struct nfs4_pathconf_arg {
 882         const struct nfs_fh *           fh;
 883         const u32 *                     bitmask;
 884         struct nfs4_sequence_args       seq_args;
 885 };
 886
 887 struct nfs4_pathconf_res {
 888         struct nfs_pathconf            *pathconf;
 889         struct nfs4_sequence_res        seq_res;
 890 };
 891
 892 struct nfs4_readdir_arg {
 893         const struct nfs_fh *           fh;
 894         u64                             cookie;
 895         nfs4_verifier                   verifier;
 896         u32                             count;
 897         struct page **                  pages;  /* zero-copy data */
 898         unsigned int                    pgbase; /* zero-copy data */
 899         const u32 *                     bitmask;
 900         int                             plus;
 901         struct nfs4_sequence_args       seq_args;
 902 };
 903
 904 struct nfs4_readdir_res {
 905         nfs4_verifier                   verifier;
 906         unsigned int                    pgbase;
 907         struct nfs4_sequence_res        seq_res;
 908 };
 909
 910 struct nfs4_readlink {
 911         const struct nfs_fh *           fh;
 912         unsigned int                    pgbase;
 913         unsigned int                    pglen;   /* zero-copy data */
 914         struct page **                  pages;   /* zero-copy data */
 915         struct nfs4_sequence_args       seq_args;
 916 };
 917
 918 struct nfs4_readlink_res {
 919         struct nfs4_sequence_res        seq_res;
 920 };
 921
 922 #define NFS4_SETCLIENTID_NAMELEN        (127)
 923 struct nfs4_setclientid {
 924         const nfs4_verifier *           sc_verifier;
 925         unsigned int                    sc_name_len;
 926         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 927         u32                             sc_prog;
 928         unsigned int                    sc_netid_len;
 929         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 930         unsigned int                    sc_uaddr_len;
 931         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 932         u32                             sc_cb_ident;
 933 };
 934
 935 struct nfs4_setclientid_res {
 936         u64                             clientid;
 937         nfs4_verifier                   confirm;
 938 };
 939
 940 struct nfs4_statfs_arg {
 941         const struct nfs_fh *           fh;
 942         const u32 *                     bitmask;
 943         struct nfs4_sequence_args       seq_args;
 944 };
 945
 946 struct nfs4_statfs_res {
 947         struct nfs_fsstat              *fsstat;
 948         struct nfs4_sequence_res        seq_res;
 949 };
 950
 951 struct nfs4_server_caps_arg {
 952         struct nfs_fh                  *fhandle;
 953         struct nfs4_sequence_args       seq_args;
 954 };
 955
 956 struct nfs4_server_caps_res {
 957         u32                             attr_bitmask[2];
 958         u32                             acl_bitmask;
 959         u32                             has_links;
 960         u32                             has_symlinks;
 961         struct nfs4_sequence_res        seq_res;
 962 };
 963
 964 struct nfs4_string {
 965         unsigned int len;
 966         char *data;
 967 };
 968
 969 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 970 struct nfs4_pathname {
 971         unsigned int ncomponents;
 972         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 973 };
 974
 975 #define NFS4_FS_LOCATION_MAXSERVERS 10
 976 struct nfs4_fs_location {
 977         unsigned int nservers;
 978         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 979         struct nfs4_pathname rootpath;
 980 };
 981
 982 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 983 struct nfs4_fs_locations {
 984         struct nfs_fattr fattr;
 985         const struct nfs_server *server;
 986         struct nfs4_pathname fs_path;
 987         int nlocations;
 988         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 989 };
 990
 991 struct nfs4_fs_locations_arg {
 992         const struct nfs_fh *dir_fh;
 993         const struct qstr *name;
 994         struct page *page;
 995         const u32 *bitmask;
 996         struct nfs4_sequence_args       seq_args;
 997 };
 998
 999 struct nfs4_fs_locations_res {
1000         struct nfs4_fs_locations       *fs_locations;
1001         struct nfs4_sequence_res        seq_res;
1002 };
1003
1004 struct nfs4_secinfo_oid {
1005         unsigned int len;
1006         char data[GSS_OID_MAX_LEN];
1007 };
1008
1009 struct nfs4_secinfo_gss {
1010         struct nfs4_secinfo_oid sec_oid4;
1011         unsigned int qop4;
1012         unsigned int service;
1013 };
1014
1015 struct nfs4_secinfo_flavor {
1016         unsigned int            flavor;
1017         struct nfs4_secinfo_gss gss;
1018 };
1019
1020 struct nfs4_secinfo_flavors {
1021         unsigned int num_flavors;
1022         struct nfs4_secinfo_flavor flavors[0];
1023 };
1024
1025 struct nfs4_secinfo_arg {
1026         const struct nfs_fh             *dir_fh;
1027         const struct qstr               *name;
1028         struct nfs4_sequence_args       seq_args;
1029 };
1030
1031 struct nfs4_secinfo_res {
1032         struct nfs4_secinfo_flavors     *flavors;
1033         struct nfs4_sequence_res        seq_res;
1034 };
1035
1036 #endif /* CONFIG_NFS_V4 */
1037
1038 struct nfstime4 {
1039         u64     seconds;
1040         u32     nseconds;
1041 };
1042
1043 #ifdef CONFIG_NFS_V4_1
1044 struct nfs_impl_id4 {
1045         u32             domain_len;
1046         char            *domain;
1047         u32             name_len;
1048         char            *name;
1049         struct nfstime4 date;
1050 };
1051
1052 #define NFS4_EXCHANGE_ID_LEN    (48)
1053 struct nfs41_exchange_id_args {
1054         struct nfs_client               *client;
1055         nfs4_verifier                   *verifier;
1056         unsigned int                    id_len;
1057         char                            id[NFS4_EXCHANGE_ID_LEN];
1058         u32                             flags;
1059 };
1060
1061 struct server_owner {
1062         uint64_t                        minor_id;
1063         uint32_t                        major_id_sz;
1064         char                            major_id[NFS4_OPAQUE_LIMIT];
1065 };
1066
1067 struct server_scope {
1068         uint32_t                        server_scope_sz;
1069         char                            server_scope[NFS4_OPAQUE_LIMIT];
1070 };
1071
1072 struct nfs41_exchange_id_res {
1073         struct nfs_client               *client;
1074         u32                             flags;
1075         struct server_scope             *server_scope;
1076 };
1077
1078 struct nfs41_create_session_args {
1079         struct nfs_client              *client;
1080         uint32_t                        flags;
1081         uint32_t                        cb_program;
1082         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1083         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1084 };
1085
1086 struct nfs41_create_session_res {
1087         struct nfs_client              *client;
1088 };
1089
1090 struct nfs41_reclaim_complete_args {
1091         /* In the future extend to include curr_fh for use with migration */
1092         unsigned char                   one_fs:1;
1093         struct nfs4_sequence_args       seq_args;
1094 };
1095
1096 struct nfs41_reclaim_complete_res {
1097         struct nfs4_sequence_res        seq_res;
1098 };
1099
1100 #define SECINFO_STYLE_CURRENT_FH 0
1101 #define SECINFO_STYLE_PARENT 1
1102 struct nfs41_secinfo_no_name_args {
1103         int                             style;
1104         struct nfs4_sequence_args       seq_args;
1105 };
1106
1107 struct nfs41_test_stateid_args {
1108         nfs4_stateid                    *stateid;
1109         struct nfs4_sequence_args       seq_args;
1110 };
1111
1112 struct nfs41_test_stateid_res {
1113         unsigned int                    status;
1114         struct nfs4_sequence_res        seq_res;
1115 };
1116
1117 struct nfs41_free_stateid_args {
1118         nfs4_stateid                    *stateid;
1119         struct nfs4_sequence_args       seq_args;
1120 };
1121
1122 struct nfs41_free_stateid_res {
1123         unsigned int                    status;
1124         struct nfs4_sequence_res        seq_res;
1125 };
1126
1127 #endif /* CONFIG_NFS_V4_1 */
1128
1129 struct nfs_page;
1130
1131 #define NFS_PAGEVEC_SIZE        (8U)
1132
1133 struct nfs_read_data {
1134         int                     flags;
1135         struct rpc_task         task;
1136         struct inode            *inode;
1137         struct rpc_cred         *cred;
1138         struct nfs_fattr        fattr;  /* fattr storage */
1139         struct list_head        pages;  /* Coalesced read requests */
1140         struct list_head        list;   /* lists of struct nfs_read_data */
1141         struct nfs_page         *req;   /* multi ops per nfs_page */
1142         struct page             **pagevec;
1143         unsigned int            npages; /* Max length of pagevec */
1144         struct nfs_readargs args;
1145         struct nfs_readres  res;
1146         unsigned long           timestamp;      /* For lease renewal */
1147         struct pnfs_layout_segment *lseg;
1148         struct nfs_client       *ds_clp;        /* pNFS data server */
1149         const struct rpc_call_ops *mds_ops;
1150         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1151         __u64                   mds_offset;
1152         int                     pnfs_error;
1153         struct page             *page_array[NFS_PAGEVEC_SIZE];
1154 };
1155
1156 struct nfs_write_data {
1157         int                     flags;
1158         struct rpc_task         task;
1159         struct inode            *inode;
1160         struct rpc_cred         *cred;
1161         struct nfs_fattr        fattr;
1162         struct nfs_writeverf    verf;
1163         struct list_head        pages;          /* Coalesced requests we wish to flush */
1164         struct list_head        list;           /* lists of struct nfs_write_data */
1165         struct nfs_page         *req;           /* multi ops per nfs_page */
1166         struct page             **pagevec;
1167         unsigned int            npages;         /* Max length of pagevec */
1168         struct nfs_writeargs    args;           /* argument struct */
1169         struct nfs_writeres     res;            /* result struct */
1170         struct pnfs_layout_segment *lseg;
1171         struct nfs_client       *ds_clp;        /* pNFS data server */
1172         int                     ds_commit_index;
1173         const struct rpc_call_ops *mds_ops;
1174         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1175 #ifdef CONFIG_NFS_V4
1176         unsigned long           timestamp;      /* For lease renewal */
1177 #endif
1178         __u64                   mds_offset;     /* Filelayout dense stripe */
1179         int                     pnfs_error;
1180         struct page             *page_array[NFS_PAGEVEC_SIZE];
1181 };
1182
1183 struct nfs_access_entry;
1184 struct nfs_client;
1185 struct rpc_timeout;
1186
1187 /*
1188  * RPC procedure vector for NFSv2/NFSv3 demuxing
1189  */
1190 struct nfs_rpc_ops {
1191         u32     version;                /* Protocol version */
1192         const struct dentry_operations *dentry_ops;
1193         const struct inode_operations *dir_inode_ops;
1194         const struct inode_operations *file_inode_ops;
1195
1196         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1197                             struct nfs_fsinfo *);
1198         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1199                             struct qstr *, struct nfs_fh *,
1200                             struct nfs_fattr *);
1201         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1202                             struct nfs_fattr *);
1203         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1204                             struct iattr *);
1205         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1206                             struct nfs_fh *, struct nfs_fattr *);
1207         int     (*access)  (struct inode *, struct nfs_access_entry *);
1208         int     (*readlink)(struct inode *, struct page *, unsigned int,
1209                             unsigned int);
1210         int     (*create)  (struct inode *, struct dentry *,
1211                             struct iattr *, int, struct nfs_open_context *);
1212         int     (*remove)  (struct inode *, struct qstr *);
1213         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1214         int     (*unlink_done) (struct rpc_task *, struct inode *);
1215         int     (*rename)  (struct inode *, struct qstr *,
1216                             struct inode *, struct qstr *);
1217         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1218         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1219         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1220         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1221                             unsigned int, struct iattr *);
1222         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1223         int     (*rmdir)   (struct inode *, struct qstr *);
1224         int     (*readdir) (struct dentry *, struct rpc_cred *,
1225                             u64, struct page **, unsigned int, int);
1226         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1227                             dev_t);
1228         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1229                             struct nfs_fsstat *);
1230         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1231                             struct nfs_fsinfo *);
1232         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1233                              struct nfs_pathconf *);
1234         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1235         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1236         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1237         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1238         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1239         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1240         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1241         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1242         int     (*lock)(struct file *, int, struct file_lock *);
1243         int     (*lock_check_bounds)(const struct file_lock *);
1244         void    (*clear_acl_cache)(struct inode *);
1245         void    (*close_context)(struct nfs_open_context *ctx, int);
1246         struct inode * (*open_context) (struct inode *dir,
1247                                 struct nfs_open_context *ctx,
1248                                 int open_flags,
1249                                 struct iattr *iattr);
1250         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1251                                 const char *, rpc_authflavor_t, int);
1252         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1253 };
1254
1255 /*
1256  *      NFS_CALL(getattr, inode, (fattr));
1257  * into
1258  *      NFS_PROTO(inode)->getattr(fattr);
1259  */
1260 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1261
1262 /*
1263  * Function vectors etc. for the NFS client
1264  */
1265 extern const struct nfs_rpc_ops nfs_v2_clientops;
1266 extern const struct nfs_rpc_ops nfs_v3_clientops;
1267 extern const struct nfs_rpc_ops nfs_v4_clientops;
1268 extern struct rpc_version       nfs_version2;
1269 extern struct rpc_version       nfs_version3;
1270 extern struct rpc_version       nfs_version4;
1271
1272 extern struct rpc_version       nfsacl_version3;
1273 extern struct rpc_program       nfsacl_program;
1274
1275 #endif