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 nfs4_string {
  22         unsigned int len;
  23         char *data;
  24 };
  25
  26 struct nfs_fsid {
  27         uint64_t                major;
  28         uint64_t                minor;
  29 };
  30
  31 /*
  32  * Helper for checking equality between 2 fsids.
  33  */
  34 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  35 {
  36         return a->major == b->major && a->minor == b->minor;
  37 }
  38
  39 struct nfs_fattr {
  40         unsigned int            valid;          /* which fields are valid */
  41         umode_t                 mode;
  42         __u32                   nlink;
  43         __u32                   uid;
  44         __u32                   gid;
  45         dev_t                   rdev;
  46         __u64                   size;
  47         union {
  48                 struct {
  49                         __u32   blocksize;
  50                         __u32   blocks;
  51                 } nfs2;
  52                 struct {
  53                         __u64   used;
  54                 } nfs3;
  55         } du;
  56         struct nfs_fsid         fsid;
  57         __u64                   fileid;
  58         __u64                   mounted_on_fileid;
  59         struct timespec         atime;
  60         struct timespec         mtime;
  61         struct timespec         ctime;
  62         __u64                   change_attr;    /* NFSv4 change attribute */
  63         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  64         __u64                   pre_size;       /* pre_op_attr.size       */
  65         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  66         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  67         unsigned long           time_start;
  68         unsigned long           gencount;
  69         struct nfs4_string      *owner_name;
  70         struct nfs4_string      *group_name;
  71 };
  72
  73 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  74 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  75 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  76 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  77 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  78 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  79 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  80 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  81 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  82 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  83 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  84 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  85 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  86 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  87 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  88 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  89 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  90 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  91 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  92 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  93 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 20)      /* Treat as mountpoint */
  94 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID                (1U << 21)
  95 #define NFS_ATTR_FATTR_OWNER_NAME       (1U << 22)
  96 #define NFS_ATTR_FATTR_GROUP_NAME       (1U << 23)
  97
  98 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  99                 | NFS_ATTR_FATTR_MODE \
 100                 | NFS_ATTR_FATTR_NLINK \
 101                 | NFS_ATTR_FATTR_OWNER \
 102                 | NFS_ATTR_FATTR_GROUP \
 103                 | NFS_ATTR_FATTR_RDEV \
 104                 | NFS_ATTR_FATTR_SIZE \
 105                 | NFS_ATTR_FATTR_FSID \
 106                 | NFS_ATTR_FATTR_FILEID \
 107                 | NFS_ATTR_FATTR_ATIME \
 108                 | NFS_ATTR_FATTR_MTIME \
 109                 | NFS_ATTR_FATTR_CTIME)
 110 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 111                 | NFS_ATTR_FATTR_BLOCKS_USED)
 112 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 113                 | NFS_ATTR_FATTR_SPACE_USED)
 114 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 115                 | NFS_ATTR_FATTR_SPACE_USED \
 116                 | NFS_ATTR_FATTR_CHANGE)
 117
 118 /*
 119  * Info on the file system
 120  */
 121 struct nfs_fsinfo {
 122         struct nfs_fattr        *fattr; /* Post-op attributes */
 123         __u32                   rtmax;  /* max.  read transfer size */
 124         __u32                   rtpref; /* pref. read transfer size */
 125         __u32                   rtmult; /* reads should be multiple of this */
 126         __u32                   wtmax;  /* max.  write transfer size */
 127         __u32                   wtpref; /* pref. write transfer size */
 128         __u32                   wtmult; /* writes should be multiple of this */
 129         __u32                   dtpref; /* pref. readdir transfer size */
 130         __u64                   maxfilesize;
 131         struct timespec         time_delta; /* server time granularity */
 132         __u32                   lease_time; /* in seconds */
 133         __u32                   layouttype; /* supported pnfs layout driver */
 134         __u32                   blksize; /* preferred pnfs io block size */
 135 };
 136
 137 struct nfs_fsstat {
 138         struct nfs_fattr        *fattr; /* Post-op attributes */
 139         __u64                   tbytes; /* total size in bytes */
 140         __u64                   fbytes; /* # of free bytes */
 141         __u64                   abytes; /* # of bytes available to user */
 142         __u64                   tfiles; /* # of files */
 143         __u64                   ffiles; /* # of free files */
 144         __u64                   afiles; /* # of files available to user */
 145 };
 146
 147 struct nfs2_fsstat {
 148         __u32                   tsize;  /* Server transfer size */
 149         __u32                   bsize;  /* Filesystem block size */
 150         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 151         __u32                   bfree;  /* No. of free "bsize" blocks */
 152         __u32                   bavail; /* No. of available "bsize" blocks */
 153 };
 154
 155 struct nfs_pathconf {
 156         struct nfs_fattr        *fattr; /* Post-op attributes */
 157         __u32                   max_link; /* max # of hard links */
 158         __u32                   max_namelen; /* max name length */
 159 };
 160
 161 struct nfs4_change_info {
 162         u32                     atomic;
 163         u64                     before;
 164         u64                     after;
 165 };
 166
 167 struct nfs_seqid;
 168
 169 /* nfs41 sessions channel attributes */
 170 struct nfs4_channel_attrs {
 171         u32                     max_rqst_sz;
 172         u32                     max_resp_sz;
 173         u32                     max_resp_sz_cached;
 174         u32                     max_ops;
 175         u32                     max_reqs;
 176 };
 177
 178 /* nfs41 sessions slot seqid */
 179 struct nfs4_slot {
 180         u32                     seq_nr;
 181 };
 182
 183 struct nfs4_sequence_args {
 184         struct nfs4_session     *sa_session;
 185         u8                      sa_slotid;
 186         u8                      sa_cache_this;
 187 };
 188
 189 struct nfs4_sequence_res {
 190         struct nfs4_session     *sr_session;
 191         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 192         int                     sr_status;      /* sequence operation status */
 193         unsigned long           sr_renewal_time;
 194         u32                     sr_status_flags;
 195 };
 196
 197 struct nfs4_get_lease_time_args {
 198         struct nfs4_sequence_args       la_seq_args;
 199 };
 200
 201 struct nfs4_get_lease_time_res {
 202         struct nfs_fsinfo              *lr_fsinfo;
 203         struct nfs4_sequence_res        lr_seq_res;
 204 };
 205
 206 #define PNFS_LAYOUT_MAXSIZE 4096
 207
 208 struct nfs4_layoutdriver_data {
 209         struct page **pages;
 210         __u32 pglen;
 211         __u32 len;
 212 };
 213
 214 struct pnfs_layout_range {
 215         u32 iomode;
 216         u64 offset;
 217         u64 length;
 218 };
 219
 220 struct nfs4_layoutget_args {
 221         __u32 type;
 222         struct pnfs_layout_range range;
 223         __u64 minlength;
 224         __u32 maxcount;
 225         struct inode *inode;
 226         struct nfs_open_context *ctx;
 227         struct nfs4_sequence_args seq_args;
 228         nfs4_stateid stateid;
 229         struct nfs4_layoutdriver_data layout;
 230 };
 231
 232 struct nfs4_layoutget_res {
 233         __u32 return_on_close;
 234         struct pnfs_layout_range range;
 235         __u32 type;
 236         nfs4_stateid stateid;
 237         struct nfs4_sequence_res seq_res;
 238         struct nfs4_layoutdriver_data *layoutp;
 239 };
 240
 241 struct nfs4_layoutget {
 242         struct nfs4_layoutget_args args;
 243         struct nfs4_layoutget_res res;
 244         struct pnfs_layout_segment **lsegpp;
 245         gfp_t gfp_flags;
 246 };
 247
 248 struct nfs4_getdevicelist_args {
 249         const struct nfs_fh *fh;
 250         u32 layoutclass;
 251         struct nfs4_sequence_args seq_args;
 252 };
 253
 254 struct nfs4_getdevicelist_res {
 255         struct pnfs_devicelist *devlist;
 256         struct nfs4_sequence_res seq_res;
 257 };
 258
 259 struct nfs4_getdeviceinfo_args {
 260         struct pnfs_device *pdev;
 261         struct nfs4_sequence_args seq_args;
 262 };
 263
 264 struct nfs4_getdeviceinfo_res {
 265         struct pnfs_device *pdev;
 266         struct nfs4_sequence_res seq_res;
 267 };
 268
 269 struct nfs4_layoutcommit_args {
 270         nfs4_stateid stateid;
 271         __u64 lastbytewritten;
 272         struct inode *inode;
 273         const u32 *bitmask;
 274         struct nfs4_sequence_args seq_args;
 275 };
 276
 277 struct nfs4_layoutcommit_res {
 278         struct nfs_fattr *fattr;
 279         const struct nfs_server *server;
 280         struct nfs4_sequence_res seq_res;
 281         int status;
 282 };
 283
 284 struct nfs4_layoutcommit_data {
 285         struct rpc_task task;
 286         struct nfs_fattr fattr;
 287         struct list_head lseg_list;
 288         struct rpc_cred *cred;
 289         struct nfs4_layoutcommit_args args;
 290         struct nfs4_layoutcommit_res res;
 291 };
 292
 293 struct nfs4_layoutreturn_args {
 294         struct pnfs_layout_hdr *layout;
 295         struct inode *inode;
 296         nfs4_stateid stateid;
 297         __u32   layout_type;
 298         struct nfs4_sequence_args seq_args;
 299 };
 300
 301 struct nfs4_layoutreturn_res {
 302         struct nfs4_sequence_res seq_res;
 303         u32 lrs_present;
 304         nfs4_stateid stateid;
 305 };
 306
 307 struct nfs4_layoutreturn {
 308         struct nfs4_layoutreturn_args args;
 309         struct nfs4_layoutreturn_res res;
 310         struct rpc_cred *cred;
 311         struct nfs_client *clp;
 312         int rpc_status;
 313 };
 314
 315 /*
 316  * Arguments to the open call.
 317  */
 318 struct nfs_openargs {
 319         const struct nfs_fh *   fh;
 320         struct nfs_seqid *      seqid;
 321         int                     open_flags;
 322         fmode_t                 fmode;
 323         __u64                   clientid;
 324         __u64                   id;
 325         union {
 326                 struct {
 327                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 328                         nfs4_verifier   verifier; /* EXCLUSIVE */
 329                 };
 330                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 331                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 332         } u;
 333         const struct qstr *     name;
 334         const struct nfs_server *server;         /* Needed for ID mapping */
 335         const u32 *             bitmask;
 336         const u32 *             dir_bitmask;
 337         __u32                   claim;
 338         struct nfs4_sequence_args       seq_args;
 339 };
 340
 341 struct nfs_openres {
 342         nfs4_stateid            stateid;
 343         struct nfs_fh           fh;
 344         struct nfs4_change_info cinfo;
 345         __u32                   rflags;
 346         struct nfs_fattr *      f_attr;
 347         struct nfs_fattr *      dir_attr;
 348         struct nfs_seqid *      seqid;
 349         const struct nfs_server *server;
 350         fmode_t                 delegation_type;
 351         nfs4_stateid            delegation;
 352         __u32                   do_recall;
 353         __u64                   maxsize;
 354         __u32                   attrset[NFS4_BITMAP_SIZE];
 355         struct nfs4_string      *owner;
 356         struct nfs4_string      *group_owner;
 357         struct nfs4_sequence_res        seq_res;
 358 };
 359
 360 /*
 361  * Arguments to the open_confirm call.
 362  */
 363 struct nfs_open_confirmargs {
 364         const struct nfs_fh *   fh;
 365         nfs4_stateid *          stateid;
 366         struct nfs_seqid *      seqid;
 367 };
 368
 369 struct nfs_open_confirmres {
 370         nfs4_stateid            stateid;
 371         struct nfs_seqid *      seqid;
 372 };
 373
 374 /*
 375  * Arguments to the close call.
 376  */
 377 struct nfs_closeargs {
 378         struct nfs_fh *         fh;
 379         nfs4_stateid *          stateid;
 380         struct nfs_seqid *      seqid;
 381         fmode_t                 fmode;
 382         const u32 *             bitmask;
 383         struct nfs4_sequence_args       seq_args;
 384 };
 385
 386 struct nfs_closeres {
 387         nfs4_stateid            stateid;
 388         struct nfs_fattr *      fattr;
 389         struct nfs_seqid *      seqid;
 390         const struct nfs_server *server;
 391         struct nfs4_sequence_res        seq_res;
 392 };
 393 /*
 394  *  * Arguments to the lock,lockt, and locku call.
 395  *   */
 396 struct nfs_lowner {
 397         __u64                   clientid;
 398         __u64                   id;
 399         dev_t                   s_dev;
 400 };
 401
 402 struct nfs_lock_args {
 403         struct nfs_fh *         fh;
 404         struct file_lock *      fl;
 405         struct nfs_seqid *      lock_seqid;
 406         nfs4_stateid *          lock_stateid;
 407         struct nfs_seqid *      open_seqid;
 408         nfs4_stateid *          open_stateid;
 409         struct nfs_lowner       lock_owner;
 410         unsigned char           block : 1;
 411         unsigned char           reclaim : 1;
 412         unsigned char           new_lock_owner : 1;
 413         struct nfs4_sequence_args       seq_args;
 414 };
 415
 416 struct nfs_lock_res {
 417         nfs4_stateid            stateid;
 418         struct nfs_seqid *      lock_seqid;
 419         struct nfs_seqid *      open_seqid;
 420         struct nfs4_sequence_res        seq_res;
 421 };
 422
 423 struct nfs_locku_args {
 424         struct nfs_fh *         fh;
 425         struct file_lock *      fl;
 426         struct nfs_seqid *      seqid;
 427         nfs4_stateid *          stateid;
 428         struct nfs4_sequence_args       seq_args;
 429 };
 430
 431 struct nfs_locku_res {
 432         nfs4_stateid            stateid;
 433         struct nfs_seqid *      seqid;
 434         struct nfs4_sequence_res        seq_res;
 435 };
 436
 437 struct nfs_lockt_args {
 438         struct nfs_fh *         fh;
 439         struct file_lock *      fl;
 440         struct nfs_lowner       lock_owner;
 441         struct nfs4_sequence_args       seq_args;
 442 };
 443
 444 struct nfs_lockt_res {
 445         struct file_lock *      denied; /* LOCK, LOCKT failed */
 446         struct nfs4_sequence_res        seq_res;
 447 };
 448
 449 struct nfs_release_lockowner_args {
 450         struct nfs_lowner       lock_owner;
 451 };
 452
 453 struct nfs4_delegreturnargs {
 454         const struct nfs_fh *fhandle;
 455         const nfs4_stateid *stateid;
 456         const u32 * bitmask;
 457         struct nfs4_sequence_args       seq_args;
 458 };
 459
 460 struct nfs4_delegreturnres {
 461         struct nfs_fattr * fattr;
 462         const struct nfs_server *server;
 463         struct nfs4_sequence_res        seq_res;
 464 };
 465
 466 /*
 467  * Arguments to the read call.
 468  */
 469 struct nfs_readargs {
 470         struct nfs_fh *         fh;
 471         struct nfs_open_context *context;
 472         struct nfs_lock_context *lock_context;
 473         __u64                   offset;
 474         __u32                   count;
 475         unsigned int            pgbase;
 476         struct page **          pages;
 477         struct nfs4_sequence_args       seq_args;
 478 };
 479
 480 struct nfs_readres {
 481         struct nfs_fattr *      fattr;
 482         __u32                   count;
 483         int                     eof;
 484         struct nfs4_sequence_res        seq_res;
 485 };
 486
 487 /*
 488  * Arguments to the write call.
 489  */
 490 struct nfs_writeargs {
 491         struct nfs_fh *         fh;
 492         struct nfs_open_context *context;
 493         struct nfs_lock_context *lock_context;
 494         __u64                   offset;
 495         __u32                   count;
 496         enum nfs3_stable_how    stable;
 497         unsigned int            pgbase;
 498         struct page **          pages;
 499         const u32 *             bitmask;
 500         struct nfs4_sequence_args       seq_args;
 501 };
 502
 503 struct nfs_writeverf {
 504         enum nfs3_stable_how    committed;
 505         __be32                  verifier[2];
 506 };
 507
 508 struct nfs_writeres {
 509         struct nfs_fattr *      fattr;
 510         struct nfs_writeverf *  verf;
 511         __u32                   count;
 512         const struct nfs_server *server;
 513         struct nfs4_sequence_res        seq_res;
 514 };
 515
 516 /*
 517  * Common arguments to the unlink call
 518  */
 519 struct nfs_removeargs {
 520         const struct nfs_fh     *fh;
 521         struct qstr             name;
 522         const u32 *             bitmask;
 523         struct nfs4_sequence_args       seq_args;
 524 };
 525
 526 struct nfs_removeres {
 527         const struct nfs_server *server;
 528         struct nfs_fattr        *dir_attr;
 529         struct nfs4_change_info cinfo;
 530         struct nfs4_sequence_res        seq_res;
 531 };
 532
 533 /*
 534  * Common arguments to the rename call
 535  */
 536 struct nfs_renameargs {
 537         const struct nfs_fh             *old_dir;
 538         const struct nfs_fh             *new_dir;
 539         const struct qstr               *old_name;
 540         const struct qstr               *new_name;
 541         const u32                       *bitmask;
 542         struct nfs4_sequence_args       seq_args;
 543 };
 544
 545 struct nfs_renameres {
 546         const struct nfs_server         *server;
 547         struct nfs4_change_info         old_cinfo;
 548         struct nfs_fattr                *old_fattr;
 549         struct nfs4_change_info         new_cinfo;
 550         struct nfs_fattr                *new_fattr;
 551         struct nfs4_sequence_res        seq_res;
 552 };
 553
 554 /*
 555  * Argument struct for decode_entry function
 556  */
 557 struct nfs_entry {
 558         __u64                   ino;
 559         __u64                   cookie,
 560                                 prev_cookie;
 561         const char *            name;
 562         unsigned int            len;
 563         int                     eof;
 564         struct nfs_fh *         fh;
 565         struct nfs_fattr *      fattr;
 566         unsigned char           d_type;
 567         struct nfs_server *     server;
 568 };
 569
 570 /*
 571  * The following types are for NFSv2 only.
 572  */
 573 struct nfs_sattrargs {
 574         struct nfs_fh *         fh;
 575         struct iattr *          sattr;
 576 };
 577
 578 struct nfs_diropargs {
 579         struct nfs_fh *         fh;
 580         const char *            name;
 581         unsigned int            len;
 582 };
 583
 584 struct nfs_createargs {
 585         struct nfs_fh *         fh;
 586         const char *            name;
 587         unsigned int            len;
 588         struct iattr *          sattr;
 589 };
 590
 591 struct nfs_setattrargs {
 592         struct nfs_fh *                 fh;
 593         nfs4_stateid                    stateid;
 594         struct iattr *                  iap;
 595         const struct nfs_server *       server; /* Needed for name mapping */
 596         const u32 *                     bitmask;
 597         struct nfs4_sequence_args       seq_args;
 598 };
 599
 600 struct nfs_setaclargs {
 601         struct nfs_fh *                 fh;
 602         size_t                          acl_len;
 603         unsigned int                    acl_pgbase;
 604         struct page **                  acl_pages;
 605         struct nfs4_sequence_args       seq_args;
 606 };
 607
 608 struct nfs_setaclres {
 609         struct nfs4_sequence_res        seq_res;
 610 };
 611
 612 struct nfs_getaclargs {
 613         struct nfs_fh *                 fh;
 614         size_t                          acl_len;
 615         unsigned int                    acl_pgbase;
 616         struct page **                  acl_pages;
 617         struct page *                   acl_scratch;
 618         struct nfs4_sequence_args       seq_args;
 619 };
 620
 621 /* getxattr ACL interface flags */
 622 #define NFS4_ACL_LEN_REQUEST    0x0001  /* zero length getxattr buffer */
 623 struct nfs_getaclres {
 624         size_t                          acl_len;
 625         size_t                          acl_data_offset;
 626         int                             acl_flags;
 627         struct nfs4_sequence_res        seq_res;
 628 };
 629
 630 struct nfs_setattrres {
 631         struct nfs_fattr *              fattr;
 632         const struct nfs_server *       server;
 633         struct nfs4_sequence_res        seq_res;
 634 };
 635
 636 struct nfs_linkargs {
 637         struct nfs_fh *         fromfh;
 638         struct nfs_fh *         tofh;
 639         const char *            toname;
 640         unsigned int            tolen;
 641 };
 642
 643 struct nfs_symlinkargs {
 644         struct nfs_fh *         fromfh;
 645         const char *            fromname;
 646         unsigned int            fromlen;
 647         struct page **          pages;
 648         unsigned int            pathlen;
 649         struct iattr *          sattr;
 650 };
 651
 652 struct nfs_readdirargs {
 653         struct nfs_fh *         fh;
 654         __u32                   cookie;
 655         unsigned int            count;
 656         struct page **          pages;
 657 };
 658
 659 struct nfs3_getaclargs {
 660         struct nfs_fh *         fh;
 661         int                     mask;
 662         struct page **          pages;
 663 };
 664
 665 struct nfs3_setaclargs {
 666         struct inode *          inode;
 667         int                     mask;
 668         struct posix_acl *      acl_access;
 669         struct posix_acl *      acl_default;
 670         size_t                  len;
 671         unsigned int            npages;
 672         struct page **          pages;
 673 };
 674
 675 struct nfs_diropok {
 676         struct nfs_fh *         fh;
 677         struct nfs_fattr *      fattr;
 678 };
 679
 680 struct nfs_readlinkargs {
 681         struct nfs_fh *         fh;
 682         unsigned int            pgbase;
 683         unsigned int            pglen;
 684         struct page **          pages;
 685 };
 686
 687 struct nfs3_sattrargs {
 688         struct nfs_fh *         fh;
 689         struct iattr *          sattr;
 690         unsigned int            guard;
 691         struct timespec         guardtime;
 692 };
 693
 694 struct nfs3_diropargs {
 695         struct nfs_fh *         fh;
 696         const char *            name;
 697         unsigned int            len;
 698 };
 699
 700 struct nfs3_accessargs {
 701         struct nfs_fh *         fh;
 702         __u32                   access;
 703 };
 704
 705 struct nfs3_createargs {
 706         struct nfs_fh *         fh;
 707         const char *            name;
 708         unsigned int            len;
 709         struct iattr *          sattr;
 710         enum nfs3_createmode    createmode;
 711         __be32                  verifier[2];
 712 };
 713
 714 struct nfs3_mkdirargs {
 715         struct nfs_fh *         fh;
 716         const char *            name;
 717         unsigned int            len;
 718         struct iattr *          sattr;
 719 };
 720
 721 struct nfs3_symlinkargs {
 722         struct nfs_fh *         fromfh;
 723         const char *            fromname;
 724         unsigned int            fromlen;
 725         struct page **          pages;
 726         unsigned int            pathlen;
 727         struct iattr *          sattr;
 728 };
 729
 730 struct nfs3_mknodargs {
 731         struct nfs_fh *         fh;
 732         const char *            name;
 733         unsigned int            len;
 734         enum nfs3_ftype         type;
 735         struct iattr *          sattr;
 736         dev_t                   rdev;
 737 };
 738
 739 struct nfs3_linkargs {
 740         struct nfs_fh *         fromfh;
 741         struct nfs_fh *         tofh;
 742         const char *            toname;
 743         unsigned int            tolen;
 744 };
 745
 746 struct nfs3_readdirargs {
 747         struct nfs_fh *         fh;
 748         __u64                   cookie;
 749         __be32                  verf[2];
 750         int                     plus;
 751         unsigned int            count;
 752         struct page **          pages;
 753 };
 754
 755 struct nfs3_diropres {
 756         struct nfs_fattr *      dir_attr;
 757         struct nfs_fh *         fh;
 758         struct nfs_fattr *      fattr;
 759 };
 760
 761 struct nfs3_accessres {
 762         struct nfs_fattr *      fattr;
 763         __u32                   access;
 764 };
 765
 766 struct nfs3_readlinkargs {
 767         struct nfs_fh *         fh;
 768         unsigned int            pgbase;
 769         unsigned int            pglen;
 770         struct page **          pages;
 771 };
 772
 773 struct nfs3_linkres {
 774         struct nfs_fattr *      dir_attr;
 775         struct nfs_fattr *      fattr;
 776 };
 777
 778 struct nfs3_readdirres {
 779         struct nfs_fattr *      dir_attr;
 780         __be32 *                verf;
 781         int                     plus;
 782 };
 783
 784 struct nfs3_getaclres {
 785         struct nfs_fattr *      fattr;
 786         int                     mask;
 787         unsigned int            acl_access_count;
 788         unsigned int            acl_default_count;
 789         struct posix_acl *      acl_access;
 790         struct posix_acl *      acl_default;
 791 };
 792
 793 #ifdef CONFIG_NFS_V4
 794
 795 typedef u64 clientid4;
 796
 797 struct nfs4_accessargs {
 798         const struct nfs_fh *           fh;
 799         const u32 *                     bitmask;
 800         u32                             access;
 801         struct nfs4_sequence_args       seq_args;
 802 };
 803
 804 struct nfs4_accessres {
 805         const struct nfs_server *       server;
 806         struct nfs_fattr *              fattr;
 807         u32                             supported;
 808         u32                             access;
 809         struct nfs4_sequence_res        seq_res;
 810 };
 811
 812 struct nfs4_create_arg {
 813         u32                             ftype;
 814         union {
 815                 struct {
 816                         struct page **  pages;
 817                         unsigned int    len;
 818                 } symlink;   /* NF4LNK */
 819                 struct {
 820                         u32             specdata1;
 821                         u32             specdata2;
 822                 } device;    /* NF4BLK, NF4CHR */
 823         } u;
 824         const struct qstr *             name;
 825         const struct nfs_server *       server;
 826         const struct iattr *            attrs;
 827         const struct nfs_fh *           dir_fh;
 828         const u32 *                     bitmask;
 829         struct nfs4_sequence_args       seq_args;
 830 };
 831
 832 struct nfs4_create_res {
 833         const struct nfs_server *       server;
 834         struct nfs_fh *                 fh;
 835         struct nfs_fattr *              fattr;
 836         struct nfs4_change_info         dir_cinfo;
 837         struct nfs_fattr *              dir_fattr;
 838         struct nfs4_sequence_res        seq_res;
 839 };
 840
 841 struct nfs4_fsinfo_arg {
 842         const struct nfs_fh *           fh;
 843         const u32 *                     bitmask;
 844         struct nfs4_sequence_args       seq_args;
 845 };
 846
 847 struct nfs4_fsinfo_res {
 848         struct nfs_fsinfo              *fsinfo;
 849         struct nfs4_sequence_res        seq_res;
 850 };
 851
 852 struct nfs4_getattr_arg {
 853         const struct nfs_fh *           fh;
 854         const u32 *                     bitmask;
 855         struct nfs4_sequence_args       seq_args;
 856 };
 857
 858 struct nfs4_getattr_res {
 859         const struct nfs_server *       server;
 860         struct nfs_fattr *              fattr;
 861         struct nfs4_sequence_res        seq_res;
 862 };
 863
 864 struct nfs4_link_arg {
 865         const struct nfs_fh *           fh;
 866         const struct nfs_fh *           dir_fh;
 867         const struct qstr *             name;
 868         const u32 *                     bitmask;
 869         struct nfs4_sequence_args       seq_args;
 870 };
 871
 872 struct nfs4_link_res {
 873         const struct nfs_server *       server;
 874         struct nfs_fattr *              fattr;
 875         struct nfs4_change_info         cinfo;
 876         struct nfs_fattr *              dir_attr;
 877         struct nfs4_sequence_res        seq_res;
 878 };
 879
 880
 881 struct nfs4_lookup_arg {
 882         const struct nfs_fh *           dir_fh;
 883         const struct qstr *             name;
 884         const u32 *                     bitmask;
 885         struct nfs4_sequence_args       seq_args;
 886 };
 887
 888 struct nfs4_lookup_res {
 889         const struct nfs_server *       server;
 890         struct nfs_fattr *              fattr;
 891         struct nfs_fh *                 fh;
 892         struct nfs4_sequence_res        seq_res;
 893 };
 894
 895 struct nfs4_lookup_root_arg {
 896         const u32 *                     bitmask;
 897         struct nfs4_sequence_args       seq_args;
 898 };
 899
 900 struct nfs4_pathconf_arg {
 901         const struct nfs_fh *           fh;
 902         const u32 *                     bitmask;
 903         struct nfs4_sequence_args       seq_args;
 904 };
 905
 906 struct nfs4_pathconf_res {
 907         struct nfs_pathconf            *pathconf;
 908         struct nfs4_sequence_res        seq_res;
 909 };
 910
 911 struct nfs4_readdir_arg {
 912         const struct nfs_fh *           fh;
 913         u64                             cookie;
 914         nfs4_verifier                   verifier;
 915         u32                             count;
 916         struct page **                  pages;  /* zero-copy data */
 917         unsigned int                    pgbase; /* zero-copy data */
 918         const u32 *                     bitmask;
 919         int                             plus;
 920         struct nfs4_sequence_args       seq_args;
 921 };
 922
 923 struct nfs4_readdir_res {
 924         nfs4_verifier                   verifier;
 925         unsigned int                    pgbase;
 926         struct nfs4_sequence_res        seq_res;
 927 };
 928
 929 struct nfs4_readlink {
 930         const struct nfs_fh *           fh;
 931         unsigned int                    pgbase;
 932         unsigned int                    pglen;   /* zero-copy data */
 933         struct page **                  pages;   /* zero-copy data */
 934         struct nfs4_sequence_args       seq_args;
 935 };
 936
 937 struct nfs4_readlink_res {
 938         struct nfs4_sequence_res        seq_res;
 939 };
 940
 941 #define NFS4_SETCLIENTID_NAMELEN        (127)
 942 struct nfs4_setclientid {
 943         const nfs4_verifier *           sc_verifier;
 944         unsigned int                    sc_name_len;
 945         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 946         u32                             sc_prog;
 947         unsigned int                    sc_netid_len;
 948         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 949         unsigned int                    sc_uaddr_len;
 950         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 951         u32                             sc_cb_ident;
 952 };
 953
 954 struct nfs4_setclientid_res {
 955         u64                             clientid;
 956         nfs4_verifier                   confirm;
 957 };
 958
 959 struct nfs4_statfs_arg {
 960         const struct nfs_fh *           fh;
 961         const u32 *                     bitmask;
 962         struct nfs4_sequence_args       seq_args;
 963 };
 964
 965 struct nfs4_statfs_res {
 966         struct nfs_fsstat              *fsstat;
 967         struct nfs4_sequence_res        seq_res;
 968 };
 969
 970 struct nfs4_server_caps_arg {
 971         struct nfs_fh                  *fhandle;
 972         struct nfs4_sequence_args       seq_args;
 973 };
 974
 975 struct nfs4_server_caps_res {
 976         u32                             attr_bitmask[3];
 977         u32                             acl_bitmask;
 978         u32                             has_links;
 979         u32                             has_symlinks;
 980         struct nfs4_sequence_res        seq_res;
 981 };
 982
 983 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 984 struct nfs4_pathname {
 985         unsigned int ncomponents;
 986         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 987 };
 988
 989 #define NFS4_FS_LOCATION_MAXSERVERS 10
 990 struct nfs4_fs_location {
 991         unsigned int nservers;
 992         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 993         struct nfs4_pathname rootpath;
 994 };
 995
 996 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 997 struct nfs4_fs_locations {
 998         struct nfs_fattr fattr;
 999         const struct nfs_server *server;
1000         struct nfs4_pathname fs_path;
1001         int nlocations;
1002         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1003 };
1004
1005 struct nfs4_fs_locations_arg {
1006         const struct nfs_fh *dir_fh;
1007         const struct qstr *name;
1008         struct page *page;
1009         const u32 *bitmask;
1010         struct nfs4_sequence_args       seq_args;
1011 };
1012
1013 struct nfs4_fs_locations_res {
1014         struct nfs4_fs_locations       *fs_locations;
1015         struct nfs4_sequence_res        seq_res;
1016 };
1017
1018 struct nfs4_secinfo_oid {
1019         unsigned int len;
1020         char data[GSS_OID_MAX_LEN];
1021 };
1022
1023 struct nfs4_secinfo_gss {
1024         struct nfs4_secinfo_oid sec_oid4;
1025         unsigned int qop4;
1026         unsigned int service;
1027 };
1028
1029 struct nfs4_secinfo_flavor {
1030         unsigned int            flavor;
1031         struct nfs4_secinfo_gss gss;
1032 };
1033
1034 struct nfs4_secinfo_flavors {
1035         unsigned int num_flavors;
1036         struct nfs4_secinfo_flavor flavors[0];
1037 };
1038
1039 struct nfs4_secinfo_arg {
1040         const struct nfs_fh             *dir_fh;
1041         const struct qstr               *name;
1042         struct nfs4_sequence_args       seq_args;
1043 };
1044
1045 struct nfs4_secinfo_res {
1046         struct nfs4_secinfo_flavors     *flavors;
1047         struct nfs4_sequence_res        seq_res;
1048 };
1049
1050 #endif /* CONFIG_NFS_V4 */
1051
1052 struct nfstime4 {
1053         u64     seconds;
1054         u32     nseconds;
1055 };
1056
1057 #ifdef CONFIG_NFS_V4_1
1058 struct nfs_impl_id4 {
1059         u32             domain_len;
1060         char            *domain;
1061         u32             name_len;
1062         char            *name;
1063         struct nfstime4 date;
1064 };
1065
1066 #define NFS4_EXCHANGE_ID_LEN    (48)
1067 struct nfs41_exchange_id_args {
1068         struct nfs_client               *client;
1069         nfs4_verifier                   *verifier;
1070         unsigned int                    id_len;
1071         char                            id[NFS4_EXCHANGE_ID_LEN];
1072         u32                             flags;
1073 };
1074
1075 struct server_owner {
1076         uint64_t                        minor_id;
1077         uint32_t                        major_id_sz;
1078         char                            major_id[NFS4_OPAQUE_LIMIT];
1079 };
1080
1081 struct server_scope {
1082         uint32_t                        server_scope_sz;
1083         char                            server_scope[NFS4_OPAQUE_LIMIT];
1084 };
1085
1086 struct nfs41_exchange_id_res {
1087         struct nfs_client               *client;
1088         u32                             flags;
1089         struct server_scope             *server_scope;
1090 };
1091
1092 struct nfs41_create_session_args {
1093         struct nfs_client              *client;
1094         uint32_t                        flags;
1095         uint32_t                        cb_program;
1096         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1097         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1098 };
1099
1100 struct nfs41_create_session_res {
1101         struct nfs_client              *client;
1102 };
1103
1104 struct nfs41_reclaim_complete_args {
1105         /* In the future extend to include curr_fh for use with migration */
1106         unsigned char                   one_fs:1;
1107         struct nfs4_sequence_args       seq_args;
1108 };
1109
1110 struct nfs41_reclaim_complete_res {
1111         struct nfs4_sequence_res        seq_res;
1112 };
1113
1114 #define SECINFO_STYLE_CURRENT_FH 0
1115 #define SECINFO_STYLE_PARENT 1
1116 struct nfs41_secinfo_no_name_args {
1117         int                             style;
1118         struct nfs4_sequence_args       seq_args;
1119 };
1120
1121 struct nfs41_test_stateid_args {
1122         nfs4_stateid                    *stateid;
1123         struct nfs4_sequence_args       seq_args;
1124 };
1125
1126 struct nfs41_test_stateid_res {
1127         unsigned int                    status;
1128         struct nfs4_sequence_res        seq_res;
1129 };
1130
1131 struct nfs41_free_stateid_args {
1132         nfs4_stateid                    *stateid;
1133         struct nfs4_sequence_args       seq_args;
1134 };
1135
1136 struct nfs41_free_stateid_res {
1137         unsigned int                    status;
1138         struct nfs4_sequence_res        seq_res;
1139 };
1140
1141 #endif /* CONFIG_NFS_V4_1 */
1142
1143 struct nfs_page;
1144
1145 #define NFS_PAGEVEC_SIZE        (8U)
1146
1147 struct nfs_read_data {
1148         struct rpc_task         task;
1149         struct inode            *inode;
1150         struct rpc_cred         *cred;
1151         struct nfs_fattr        fattr;  /* fattr storage */
1152         struct list_head        pages;  /* Coalesced read requests */
1153         struct list_head        list;   /* lists of struct nfs_read_data */
1154         struct nfs_page         *req;   /* multi ops per nfs_page */
1155         struct page             **pagevec;
1156         unsigned int            npages; /* Max length of pagevec */
1157         struct nfs_readargs args;
1158         struct nfs_readres  res;
1159         unsigned long           timestamp;      /* For lease renewal */
1160         struct pnfs_layout_segment *lseg;
1161         struct nfs_client       *ds_clp;        /* pNFS data server */
1162         const struct rpc_call_ops *mds_ops;
1163         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1164         __u64                   mds_offset;
1165         int                     pnfs_error;
1166         struct page             *page_array[NFS_PAGEVEC_SIZE];
1167 };
1168
1169 struct nfs_write_data {
1170         struct rpc_task         task;
1171         struct inode            *inode;
1172         struct rpc_cred         *cred;
1173         struct nfs_fattr        fattr;
1174         struct nfs_writeverf    verf;
1175         struct list_head        pages;          /* Coalesced requests we wish to flush */
1176         struct list_head        list;           /* lists of struct nfs_write_data */
1177         struct nfs_page         *req;           /* multi ops per nfs_page */
1178         struct page             **pagevec;
1179         unsigned int            npages;         /* Max length of pagevec */
1180         struct nfs_writeargs    args;           /* argument struct */
1181         struct nfs_writeres     res;            /* result struct */
1182         struct pnfs_layout_segment *lseg;
1183         struct nfs_client       *ds_clp;        /* pNFS data server */
1184         int                     ds_commit_index;
1185         const struct rpc_call_ops *mds_ops;
1186         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1187 #ifdef CONFIG_NFS_V4
1188         unsigned long           timestamp;      /* For lease renewal */
1189 #endif
1190         __u64                   mds_offset;     /* Filelayout dense stripe */
1191         int                     pnfs_error;
1192         struct page             *page_array[NFS_PAGEVEC_SIZE];
1193 };
1194
1195 struct nfs_access_entry;
1196 struct nfs_client;
1197 struct rpc_timeout;
1198
1199 /*
1200  * RPC procedure vector for NFSv2/NFSv3 demuxing
1201  */
1202 struct nfs_rpc_ops {
1203         u32     version;                /* Protocol version */
1204         const struct dentry_operations *dentry_ops;
1205         const struct inode_operations *dir_inode_ops;
1206         const struct inode_operations *file_inode_ops;
1207         const struct file_operations *file_ops;
1208
1209         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1210                             struct nfs_fsinfo *);
1211         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1212                             struct nfs_fattr *);
1213         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1214                             struct iattr *);
1215         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1216                             struct nfs_fh *, struct nfs_fattr *);
1217         int     (*access)  (struct inode *, struct nfs_access_entry *);
1218         int     (*readlink)(struct inode *, struct page *, unsigned int,
1219                             unsigned int);
1220         int     (*create)  (struct inode *, struct dentry *,
1221                             struct iattr *, int, struct nfs_open_context *);
1222         int     (*remove)  (struct inode *, struct qstr *);
1223         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1224         int     (*unlink_done) (struct rpc_task *, struct inode *);
1225         int     (*rename)  (struct inode *, struct qstr *,
1226                             struct inode *, struct qstr *);
1227         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1228         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1229         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1230         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1231                             unsigned int, struct iattr *);
1232         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1233         int     (*rmdir)   (struct inode *, struct qstr *);
1234         int     (*readdir) (struct dentry *, struct rpc_cred *,
1235                             u64, struct page **, unsigned int, int);
1236         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1237                             dev_t);
1238         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1239                             struct nfs_fsstat *);
1240         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1241                             struct nfs_fsinfo *);
1242         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1243                              struct nfs_pathconf *);
1244         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1245         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1246         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1247         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1248         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1249         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1250         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1251         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1252         int     (*lock)(struct file *, int, struct file_lock *);
1253         int     (*lock_check_bounds)(const struct file_lock *);
1254         void    (*clear_acl_cache)(struct inode *);
1255         void    (*close_context)(struct nfs_open_context *ctx, int);
1256         struct inode * (*open_context) (struct inode *dir,
1257                                 struct nfs_open_context *ctx,
1258                                 int open_flags,
1259                                 struct iattr *iattr);
1260         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1261                                 const char *, rpc_authflavor_t, int);
1262         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1263 };
1264
1265 /*
1266  *      NFS_CALL(getattr, inode, (fattr));
1267  * into
1268  *      NFS_PROTO(inode)->getattr(fattr);
1269  */
1270 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1271
1272 /*
1273  * Function vectors etc. for the NFS client
1274  */
1275 extern const struct nfs_rpc_ops nfs_v2_clientops;
1276 extern const struct nfs_rpc_ops nfs_v3_clientops;
1277 extern const struct nfs_rpc_ops nfs_v4_clientops;
1278 extern struct rpc_version       nfs_version2;
1279 extern struct rpc_version       nfs_version3;
1280 extern struct rpc_version       nfs_version4;
1281
1282 extern struct rpc_version       nfsacl_version3;
1283 extern struct rpc_program       nfsacl_program;
1284
1285 #endif