fs/nfs/proc.c

   1 /*
   2  *  linux/fs/nfs/proc.c
   3  *
   4  *  Copyright (C) 1992, 1993, 1994  Rick Sladkey
   5  *
   6  *  OS-independent nfs remote procedure call functions
   7  *
   8  *  Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers
   9  *  so at last we can have decent(ish) throughput off a
  10  *  Sun server.
  11  *
  12  *  Coding optimized and cleaned up by Florian La Roche.
  13  *  Note: Error returns are optimized for NFS_OK, which isn't translated via
  14  *  nfs_stat_to_errno(), but happens to be already the right return code.
  15  *
  16  *  Also, the code currently doesn't check the size of the packet, when
  17  *  it decodes the packet.
  18  *
  19  *  Feel free to fix it and mail me the diffs if it worries you.
  20  *
  21  *  Completely rewritten to support the new RPC call interface;
  22  *  rewrote and moved the entire XDR stuff to xdr.c
  23  *  --Olaf Kirch June 1996
  24  *
  25  *  The code below initializes all auto variables explicitly, otherwise
  26  *  it will fail to work as a module (gcc generates a memset call for an
  27  *  incomplete struct).
  28  */
  29
  30 #include <linux/types.h>
  31 #include <linux/param.h>
  32 #include <linux/slab.h>
  33 #include <linux/time.h>
  34 #include <linux/mm.h>
  35 #include <linux/utsname.h>
  36 #include <linux/errno.h>
  37 #include <linux/string.h>
  38 #include <linux/in.h>
  39 #include <linux/pagemap.h>
  40 #include <linux/sunrpc/clnt.h>
  41 #include <linux/nfs.h>
  42 #include <linux/nfs2.h>
  43 #include <linux/nfs_fs.h>
  44 #include <linux/nfs_page.h>
  45 #include <linux/lockd/bind.h>
  46 #include "internal.h"
  47
  48 #define NFSDBG_FACILITY         NFSDBG_PROC
  49
  50 /*
  51  * Bare-bones access to getattr: this is for nfs_read_super.
  52  */
  53 static int
  54 nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
  55                   struct nfs_fsinfo *info)
  56 {
  57         struct nfs_fattr *fattr = info->fattr;
  58         struct nfs2_fsstat fsinfo;
  59         struct rpc_message msg = {
  60                 .rpc_proc       = &nfs_procedures[NFSPROC_GETATTR],
  61                 .rpc_argp       = fhandle,
  62                 .rpc_resp       = fattr,
  63         };
  64         int status;
  65
  66         dprintk("%s: call getattr\n", __FUNCTION__);
  67         nfs_fattr_init(fattr);
  68         status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
  69         dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
  70         if (status)
  71                 return status;
  72         dprintk("%s: call statfs\n", __FUNCTION__);
  73         msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS];
  74         msg.rpc_resp = &fsinfo;
  75         status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
  76         dprintk("%s: reply statfs: %d\n", __FUNCTION__, status);
  77         if (status)
  78                 return status;
  79         info->rtmax  = NFS_MAXDATA;
  80         info->rtpref = fsinfo.tsize;
  81         info->rtmult = fsinfo.bsize;
  82         info->wtmax  = NFS_MAXDATA;
  83         info->wtpref = fsinfo.tsize;
  84         info->wtmult = fsinfo.bsize;
  85         info->dtpref = fsinfo.tsize;
  86         info->maxfilesize = 0x7FFFFFFF;
  87         info->lease_time = 0;
  88         return 0;
  89 }
  90
  91 /*
  92  * One function for each procedure in the NFS protocol.
  93  */
  94 static int
  95 nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
  96                 struct nfs_fattr *fattr)
  97 {
  98         struct rpc_message msg = {
  99                 .rpc_proc       = &nfs_procedures[NFSPROC_GETATTR],
 100                 .rpc_argp       = fhandle,
 101                 .rpc_resp       = fattr,
 102         };
 103         int     status;
 104
 105         dprintk("NFS call  getattr\n");
 106         nfs_fattr_init(fattr);
 107         status = rpc_call_sync(server->client, &msg, 0);
 108         dprintk("NFS reply getattr: %d\n", status);
 109         return status;
 110 }
 111
 112 static int
 113 nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 114                  struct iattr *sattr)
 115 {
 116         struct inode *inode = dentry->d_inode;
 117         struct nfs_sattrargs    arg = {
 118                 .fh     = NFS_FH(inode),
 119                 .sattr  = sattr
 120         };
 121         struct rpc_message msg = {
 122                 .rpc_proc       = &nfs_procedures[NFSPROC_SETATTR],
 123                 .rpc_argp       = &arg,
 124                 .rpc_resp       = fattr,
 125         };
 126         int     status;
 127
 128         /* Mask out the non-modebit related stuff from attr->ia_mode */
 129         sattr->ia_mode &= S_IALLUGO;
 130
 131         dprintk("NFS call  setattr\n");
 132         nfs_fattr_init(fattr);
 133         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 134         if (status == 0)
 135                 nfs_setattr_update_inode(inode, sattr);
 136         dprintk("NFS reply setattr: %d\n", status);
 137         return status;
 138 }
 139
 140 static int
 141 nfs_proc_lookup(struct inode *dir, struct qstr *name,
 142                 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 143 {
 144         struct nfs_diropargs    arg = {
 145                 .fh             = NFS_FH(dir),
 146                 .name           = name->name,
 147                 .len            = name->len
 148         };
 149         struct nfs_diropok      res = {
 150                 .fh             = fhandle,
 151                 .fattr          = fattr
 152         };
 153         struct rpc_message msg = {
 154                 .rpc_proc       = &nfs_procedures[NFSPROC_LOOKUP],
 155                 .rpc_argp       = &arg,
 156                 .rpc_resp       = &res,
 157         };
 158         int                     status;
 159
 160         dprintk("NFS call  lookup %s\n", name->name);
 161         nfs_fattr_init(fattr);
 162         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 163         dprintk("NFS reply lookup: %d\n", status);
 164         return status;
 165 }
 166
 167 static int nfs_proc_readlink(struct inode *inode, struct page *page,
 168                 unsigned int pgbase, unsigned int pglen)
 169 {
 170         struct nfs_readlinkargs args = {
 171                 .fh             = NFS_FH(inode),
 172                 .pgbase         = pgbase,
 173                 .pglen          = pglen,
 174                 .pages          = &page
 175         };
 176         struct rpc_message msg = {
 177                 .rpc_proc       = &nfs_procedures[NFSPROC_READLINK],
 178                 .rpc_argp       = &args,
 179         };
 180         int                     status;
 181
 182         dprintk("NFS call  readlink\n");
 183         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 184         dprintk("NFS reply readlink: %d\n", status);
 185         return status;
 186 }
 187
 188 static int
 189 nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 190                 int flags, struct nameidata *nd)
 191 {
 192         struct nfs_fh           fhandle;
 193         struct nfs_fattr        fattr;
 194         struct nfs_createargs   arg = {
 195                 .fh             = NFS_FH(dir),
 196                 .name           = dentry->d_name.name,
 197                 .len            = dentry->d_name.len,
 198                 .sattr          = sattr
 199         };
 200         struct nfs_diropok      res = {
 201                 .fh             = &fhandle,
 202                 .fattr          = &fattr
 203         };
 204         struct rpc_message msg = {
 205                 .rpc_proc       = &nfs_procedures[NFSPROC_CREATE],
 206                 .rpc_argp       = &arg,
 207                 .rpc_resp       = &res,
 208         };
 209         int                     status;
 210
 211         nfs_fattr_init(&fattr);
 212         dprintk("NFS call  create %s\n", dentry->d_name.name);
 213         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 214         if (status == 0)
 215                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 216         dprintk("NFS reply create: %d\n", status);
 217         return status;
 218 }
 219
 220 /*
 221  * In NFSv2, mknod is grafted onto the create call.
 222  */
 223 static int
 224 nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 225                dev_t rdev)
 226 {
 227         struct nfs_fh fhandle;
 228         struct nfs_fattr fattr;
 229         struct nfs_createargs   arg = {
 230                 .fh             = NFS_FH(dir),
 231                 .name           = dentry->d_name.name,
 232                 .len            = dentry->d_name.len,
 233                 .sattr          = sattr
 234         };
 235         struct nfs_diropok      res = {
 236                 .fh             = &fhandle,
 237                 .fattr          = &fattr
 238         };
 239         struct rpc_message msg = {
 240                 .rpc_proc       = &nfs_procedures[NFSPROC_CREATE],
 241                 .rpc_argp       = &arg,
 242                 .rpc_resp       = &res,
 243         };
 244         int status, mode;
 245
 246         dprintk("NFS call  mknod %s\n", dentry->d_name.name);
 247
 248         mode = sattr->ia_mode;
 249         if (S_ISFIFO(mode)) {
 250                 sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR;
 251                 sattr->ia_valid &= ~ATTR_SIZE;
 252         } else if (S_ISCHR(mode) || S_ISBLK(mode)) {
 253                 sattr->ia_valid |= ATTR_SIZE;
 254                 sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
 255         }
 256
 257         nfs_fattr_init(&fattr);
 258         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 259         nfs_mark_for_revalidate(dir);
 260
 261         if (status == -EINVAL && S_ISFIFO(mode)) {
 262                 sattr->ia_mode = mode;
 263                 nfs_fattr_init(&fattr);
 264                 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 265         }
 266         if (status == 0)
 267                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 268         dprintk("NFS reply mknod: %d\n", status);
 269         return status;
 270 }
 271
 272 static int
 273 nfs_proc_remove(struct inode *dir, struct qstr *name)
 274 {
 275         struct nfs_diropargs    arg = {
 276                 .fh             = NFS_FH(dir),
 277                 .name           = name->name,
 278                 .len            = name->len
 279         };
 280         struct rpc_message      msg = {
 281                 .rpc_proc       = &nfs_procedures[NFSPROC_REMOVE],
 282                 .rpc_argp       = &arg,
 283         };
 284         int                     status;
 285
 286         dprintk("NFS call  remove %s\n", name->name);
 287         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 288         nfs_mark_for_revalidate(dir);
 289
 290         dprintk("NFS reply remove: %d\n", status);
 291         return status;
 292 }
 293
 294 static int
 295 nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
 296 {
 297         struct nfs_diropargs    *arg;
 298
 299         arg = kmalloc(sizeof(*arg), GFP_KERNEL);
 300         if (!arg)
 301                 return -ENOMEM;
 302         arg->fh = NFS_FH(dir->d_inode);
 303         arg->name = name->name;
 304         arg->len = name->len;
 305         msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
 306         msg->rpc_argp = arg;
 307         return 0;
 308 }
 309
 310 static int
 311 nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
 312 {
 313         struct rpc_message *msg = &task->tk_msg;
 314
 315         if (msg->rpc_argp) {
 316                 nfs_mark_for_revalidate(dir->d_inode);
 317                 kfree(msg->rpc_argp);
 318         }
 319         return 0;
 320 }
 321
 322 static int
 323 nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
 324                 struct inode *new_dir, struct qstr *new_name)
 325 {
 326         struct nfs_renameargs   arg = {
 327                 .fromfh         = NFS_FH(old_dir),
 328                 .fromname       = old_name->name,
 329                 .fromlen        = old_name->len,
 330                 .tofh           = NFS_FH(new_dir),
 331                 .toname         = new_name->name,
 332                 .tolen          = new_name->len
 333         };
 334         struct rpc_message msg = {
 335                 .rpc_proc       = &nfs_procedures[NFSPROC_RENAME],
 336                 .rpc_argp       = &arg,
 337         };
 338         int                     status;
 339
 340         dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);
 341         status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
 342         nfs_mark_for_revalidate(old_dir);
 343         nfs_mark_for_revalidate(new_dir);
 344         dprintk("NFS reply rename: %d\n", status);
 345         return status;
 346 }
 347
 348 static int
 349 nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 350 {
 351         struct nfs_linkargs     arg = {
 352                 .fromfh         = NFS_FH(inode),
 353                 .tofh           = NFS_FH(dir),
 354                 .toname         = name->name,
 355                 .tolen          = name->len
 356         };
 357         struct rpc_message msg = {
 358                 .rpc_proc       = &nfs_procedures[NFSPROC_LINK],
 359                 .rpc_argp       = &arg,
 360         };
 361         int                     status;
 362
 363         dprintk("NFS call  link %s\n", name->name);
 364         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 365         nfs_mark_for_revalidate(inode);
 366         nfs_mark_for_revalidate(dir);
 367         dprintk("NFS reply link: %d\n", status);
 368         return status;
 369 }
 370
 371 static int
 372 nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
 373                  unsigned int len, struct iattr *sattr)
 374 {
 375         struct nfs_fh fhandle;
 376         struct nfs_fattr fattr;
 377         struct nfs_symlinkargs  arg = {
 378                 .fromfh         = NFS_FH(dir),
 379                 .fromname       = dentry->d_name.name,
 380                 .fromlen        = dentry->d_name.len,
 381                 .pages          = &page,
 382                 .pathlen        = len,
 383                 .sattr          = sattr
 384         };
 385         struct rpc_message msg = {
 386                 .rpc_proc       = &nfs_procedures[NFSPROC_SYMLINK],
 387                 .rpc_argp       = &arg,
 388         };
 389         int                     status;
 390
 391         if (len > NFS2_MAXPATHLEN)
 392                 return -ENAMETOOLONG;
 393
 394         dprintk("NFS call  symlink %s\n", dentry->d_name.name);
 395
 396         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 397         nfs_mark_for_revalidate(dir);
 398
 399         /*
 400          * V2 SYMLINK requests don't return any attributes.  Setting the
 401          * filehandle size to zero indicates to nfs_instantiate that it
 402          * should fill in the data with a LOOKUP call on the wire.
 403          */
 404         if (status == 0) {
 405                 nfs_fattr_init(&fattr);
 406                 fhandle.size = 0;
 407                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 408         }
 409
 410         dprintk("NFS reply symlink: %d\n", status);
 411         return status;
 412 }
 413
 414 static int
 415 nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 416 {
 417         struct nfs_fh fhandle;
 418         struct nfs_fattr fattr;
 419         struct nfs_createargs   arg = {
 420                 .fh             = NFS_FH(dir),
 421                 .name           = dentry->d_name.name,
 422                 .len            = dentry->d_name.len,
 423                 .sattr          = sattr
 424         };
 425         struct nfs_diropok      res = {
 426                 .fh             = &fhandle,
 427                 .fattr          = &fattr
 428         };
 429         struct rpc_message msg = {
 430                 .rpc_proc       = &nfs_procedures[NFSPROC_MKDIR],
 431                 .rpc_argp       = &arg,
 432                 .rpc_resp       = &res,
 433         };
 434         int                     status;
 435
 436         dprintk("NFS call  mkdir %s\n", dentry->d_name.name);
 437         nfs_fattr_init(&fattr);
 438         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 439         nfs_mark_for_revalidate(dir);
 440         if (status == 0)
 441                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 442         dprintk("NFS reply mkdir: %d\n", status);
 443         return status;
 444 }
 445
 446 static int
 447 nfs_proc_rmdir(struct inode *dir, struct qstr *name)
 448 {
 449         struct nfs_diropargs    arg = {
 450                 .fh             = NFS_FH(dir),
 451                 .name           = name->name,
 452                 .len            = name->len
 453         };
 454         struct rpc_message msg = {
 455                 .rpc_proc       = &nfs_procedures[NFSPROC_RMDIR],
 456                 .rpc_argp       = &arg,
 457         };
 458         int                     status;
 459
 460         dprintk("NFS call  rmdir %s\n", name->name);
 461         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 462         nfs_mark_for_revalidate(dir);
 463         dprintk("NFS reply rmdir: %d\n", status);
 464         return status;
 465 }
 466
 467 /*
 468  * The READDIR implementation is somewhat hackish - we pass a temporary
 469  * buffer to the encode function, which installs it in the receive
 470  * the receive iovec. The decode function just parses the reply to make
 471  * sure it is syntactically correct; the entries itself are decoded
 472  * from nfs_readdir by calling the decode_entry function directly.
 473  */
 474 static int
 475 nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 476                  u64 cookie, struct page *page, unsigned int count, int plus)
 477 {
 478         struct inode            *dir = dentry->d_inode;
 479         struct nfs_readdirargs  arg = {
 480                 .fh             = NFS_FH(dir),
 481                 .cookie         = cookie,
 482                 .count          = count,
 483                 .pages          = &page,
 484         };
 485         struct rpc_message      msg = {
 486                 .rpc_proc       = &nfs_procedures[NFSPROC_READDIR],
 487                 .rpc_argp       = &arg,
 488                 .rpc_cred       = cred,
 489         };
 490         int                     status;
 491
 492         dprintk("NFS call  readdir %d\n", (unsigned int)cookie);
 493         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 494
 495         dprintk("NFS reply readdir: %d\n", status);
 496         return status;
 497 }
 498
 499 static int
 500 nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 501                         struct nfs_fsstat *stat)
 502 {
 503         struct nfs2_fsstat fsinfo;
 504         struct rpc_message msg = {
 505                 .rpc_proc       = &nfs_procedures[NFSPROC_STATFS],
 506                 .rpc_argp       = fhandle,
 507                 .rpc_resp       = &fsinfo,
 508         };
 509         int     status;
 510
 511         dprintk("NFS call  statfs\n");
 512         nfs_fattr_init(stat->fattr);
 513         status = rpc_call_sync(server->client, &msg, 0);
 514         dprintk("NFS reply statfs: %d\n", status);
 515         if (status)
 516                 goto out;
 517         stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
 518         stat->fbytes = (u64)fsinfo.bfree  * fsinfo.bsize;
 519         stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
 520         stat->tfiles = 0;
 521         stat->ffiles = 0;
 522         stat->afiles = 0;
 523 out:
 524         return status;
 525 }
 526
 527 static int
 528 nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 529                         struct nfs_fsinfo *info)
 530 {
 531         struct nfs2_fsstat fsinfo;
 532         struct rpc_message msg = {
 533                 .rpc_proc       = &nfs_procedures[NFSPROC_STATFS],
 534                 .rpc_argp       = fhandle,
 535                 .rpc_resp       = &fsinfo,
 536         };
 537         int     status;
 538
 539         dprintk("NFS call  fsinfo\n");
 540         nfs_fattr_init(info->fattr);
 541         status = rpc_call_sync(server->client, &msg, 0);
 542         dprintk("NFS reply fsinfo: %d\n", status);
 543         if (status)
 544                 goto out;
 545         info->rtmax  = NFS_MAXDATA;
 546         info->rtpref = fsinfo.tsize;
 547         info->rtmult = fsinfo.bsize;
 548         info->wtmax  = NFS_MAXDATA;
 549         info->wtpref = fsinfo.tsize;
 550         info->wtmult = fsinfo.bsize;
 551         info->dtpref = fsinfo.tsize;
 552         info->maxfilesize = 0x7FFFFFFF;
 553         info->lease_time = 0;
 554 out:
 555         return status;
 556 }
 557
 558 static int
 559 nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
 560                   struct nfs_pathconf *info)
 561 {
 562         info->max_link = 0;
 563         info->max_namelen = NFS2_MAXNAMLEN;
 564         return 0;
 565 }
 566
 567 static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
 568 {
 569         if (task->tk_status >= 0) {
 570                 nfs_refresh_inode(data->inode, data->res.fattr);
 571                 /* Emulate the eof flag, which isn't normally needed in NFSv2
 572                  * as it is guaranteed to always return the file attributes
 573                  */
 574                 if (data->args.offset + data->args.count >= data->res.fattr->size)
 575                         data->res.eof = 1;
 576         }
 577         return 0;
 578 }
 579
 580 static void nfs_proc_read_setup(struct nfs_read_data *data)
 581 {
 582         struct rpc_message      msg = {
 583                 .rpc_proc       = &nfs_procedures[NFSPROC_READ],
 584                 .rpc_argp       = &data->args,
 585                 .rpc_resp       = &data->res,
 586                 .rpc_cred       = data->cred,
 587         };
 588
 589         rpc_call_setup(&data->task, &msg, 0);
 590 }
 591
 592 static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
 593 {
 594         if (task->tk_status >= 0)
 595                 nfs_post_op_update_inode(data->inode, data->res.fattr);
 596         return 0;
 597 }
 598
 599 static void nfs_proc_write_setup(struct nfs_write_data *data, int how)
 600 {
 601         struct rpc_message      msg = {
 602                 .rpc_proc       = &nfs_procedures[NFSPROC_WRITE],
 603                 .rpc_argp       = &data->args,
 604                 .rpc_resp       = &data->res,
 605                 .rpc_cred       = data->cred,
 606         };
 607
 608         /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
 609         data->args.stable = NFS_FILE_SYNC;
 610
 611         /* Finalize the task. */
 612         rpc_call_setup(&data->task, &msg, 0);
 613 }
 614
 615 static void
 616 nfs_proc_commit_setup(struct nfs_write_data *data, int how)
 617 {
 618         BUG();
 619 }
 620
 621 static int
 622 nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
 623 {
 624         return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
 625 }
 626
 627
 628 const struct nfs_rpc_ops nfs_v2_clientops = {
 629         .version        = 2,                   /* protocol version */
 630         .dentry_ops     = &nfs_dentry_operations,
 631         .dir_inode_ops  = &nfs_dir_inode_operations,
 632         .file_inode_ops = &nfs_file_inode_operations,
 633         .getroot        = nfs_proc_get_root,
 634         .getattr        = nfs_proc_getattr,
 635         .setattr        = nfs_proc_setattr,
 636         .lookup         = nfs_proc_lookup,
 637         .access         = NULL,                /* access */
 638         .readlink       = nfs_proc_readlink,
 639         .create         = nfs_proc_create,
 640         .remove         = nfs_proc_remove,
 641         .unlink_setup   = nfs_proc_unlink_setup,
 642         .unlink_done    = nfs_proc_unlink_done,
 643         .rename         = nfs_proc_rename,
 644         .link           = nfs_proc_link,
 645         .symlink        = nfs_proc_symlink,
 646         .mkdir          = nfs_proc_mkdir,
 647         .rmdir          = nfs_proc_rmdir,
 648         .readdir        = nfs_proc_readdir,
 649         .mknod          = nfs_proc_mknod,
 650         .statfs         = nfs_proc_statfs,
 651         .fsinfo         = nfs_proc_fsinfo,
 652         .pathconf       = nfs_proc_pathconf,
 653         .decode_dirent  = nfs_decode_dirent,
 654         .read_setup     = nfs_proc_read_setup,
 655         .read_done      = nfs_read_done,
 656         .write_setup    = nfs_proc_write_setup,
 657         .write_done     = nfs_write_done,
 658         .commit_setup   = nfs_proc_commit_setup,
 659         .file_open      = nfs_open,
 660         .file_release   = nfs_release,
 661         .lock           = nfs_proc_lock,
 662 };