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 <linux/smp_lock.h>
  47 #include "internal.h"
  48
  49 #define NFSDBG_FACILITY         NFSDBG_PROC
  50
  51 /*
  52  * Bare-bones access to getattr: this is for nfs_read_super.
  53  */
  54 static int
  55 nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
  56                   struct nfs_fsinfo *info)
  57 {
  58         struct nfs_fattr *fattr = info->fattr;
  59         struct nfs2_fsstat fsinfo;
  60         struct rpc_message msg = {
  61                 .rpc_proc       = &nfs_procedures[NFSPROC_GETATTR],
  62                 .rpc_argp       = fhandle,
  63                 .rpc_resp       = fattr,
  64         };
  65         int status;
  66
  67         dprintk("%s: call getattr\n", __FUNCTION__);
  68         nfs_fattr_init(fattr);
  69         status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
  70         dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
  71         if (status)
  72                 return status;
  73         dprintk("%s: call statfs\n", __FUNCTION__);
  74         msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS];
  75         msg.rpc_resp = &fsinfo;
  76         status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
  77         dprintk("%s: reply statfs: %d\n", __FUNCTION__, status);
  78         if (status)
  79                 return status;
  80         info->rtmax  = NFS_MAXDATA;
  81         info->rtpref = fsinfo.tsize;
  82         info->rtmult = fsinfo.bsize;
  83         info->wtmax  = NFS_MAXDATA;
  84         info->wtpref = fsinfo.tsize;
  85         info->wtmult = fsinfo.bsize;
  86         info->dtpref = fsinfo.tsize;
  87         info->maxfilesize = 0x7FFFFFFF;
  88         info->lease_time = 0;
  89         return 0;
  90 }
  91
  92 /*
  93  * One function for each procedure in the NFS protocol.
  94  */
  95 static int
  96 nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
  97                 struct nfs_fattr *fattr)
  98 {
  99         struct rpc_message msg = {
 100                 .rpc_proc       = &nfs_procedures[NFSPROC_GETATTR],
 101                 .rpc_argp       = fhandle,
 102                 .rpc_resp       = fattr,
 103         };
 104         int     status;
 105
 106         dprintk("NFS call  getattr\n");
 107         nfs_fattr_init(fattr);
 108         status = rpc_call_sync(server->client, &msg, 0);
 109         dprintk("NFS reply getattr: %d\n", status);
 110         return status;
 111 }
 112
 113 static int
 114 nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 115                  struct iattr *sattr)
 116 {
 117         struct inode *inode = dentry->d_inode;
 118         struct nfs_sattrargs    arg = {
 119                 .fh     = NFS_FH(inode),
 120                 .sattr  = sattr
 121         };
 122         struct rpc_message msg = {
 123                 .rpc_proc       = &nfs_procedures[NFSPROC_SETATTR],
 124                 .rpc_argp       = &arg,
 125                 .rpc_resp       = fattr,
 126         };
 127         int     status;
 128
 129         /* Mask out the non-modebit related stuff from attr->ia_mode */
 130         sattr->ia_mode &= S_IALLUGO;
 131
 132         dprintk("NFS call  setattr\n");
 133         nfs_fattr_init(fattr);
 134         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 135         if (status == 0)
 136                 nfs_setattr_update_inode(inode, sattr);
 137         dprintk("NFS reply setattr: %d\n", status);
 138         return status;
 139 }
 140
 141 static int
 142 nfs_proc_lookup(struct inode *dir, struct qstr *name,
 143                 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 144 {
 145         struct nfs_diropargs    arg = {
 146                 .fh             = NFS_FH(dir),
 147                 .name           = name->name,
 148                 .len            = name->len
 149         };
 150         struct nfs_diropok      res = {
 151                 .fh             = fhandle,
 152                 .fattr          = fattr
 153         };
 154         struct rpc_message msg = {
 155                 .rpc_proc       = &nfs_procedures[NFSPROC_LOOKUP],
 156                 .rpc_argp       = &arg,
 157                 .rpc_resp       = &res,
 158         };
 159         int                     status;
 160
 161         dprintk("NFS call  lookup %s\n", name->name);
 162         nfs_fattr_init(fattr);
 163         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 164         dprintk("NFS reply lookup: %d\n", status);
 165         return status;
 166 }
 167
 168 static int nfs_proc_readlink(struct inode *inode, struct page *page,
 169                 unsigned int pgbase, unsigned int pglen)
 170 {
 171         struct nfs_readlinkargs args = {
 172                 .fh             = NFS_FH(inode),
 173                 .pgbase         = pgbase,
 174                 .pglen          = pglen,
 175                 .pages          = &page
 176         };
 177         struct rpc_message msg = {
 178                 .rpc_proc       = &nfs_procedures[NFSPROC_READLINK],
 179                 .rpc_argp       = &args,
 180         };
 181         int                     status;
 182
 183         dprintk("NFS call  readlink\n");
 184         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 185         dprintk("NFS reply readlink: %d\n", status);
 186         return status;
 187 }
 188
 189 static int
 190 nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 191                 int flags, struct nameidata *nd)
 192 {
 193         struct nfs_fh           fhandle;
 194         struct nfs_fattr        fattr;
 195         struct nfs_createargs   arg = {
 196                 .fh             = NFS_FH(dir),
 197                 .name           = dentry->d_name.name,
 198                 .len            = dentry->d_name.len,
 199                 .sattr          = sattr
 200         };
 201         struct nfs_diropok      res = {
 202                 .fh             = &fhandle,
 203                 .fattr          = &fattr
 204         };
 205         struct rpc_message msg = {
 206                 .rpc_proc       = &nfs_procedures[NFSPROC_CREATE],
 207                 .rpc_argp       = &arg,
 208                 .rpc_resp       = &res,
 209         };
 210         int                     status;
 211
 212         nfs_fattr_init(&fattr);
 213         dprintk("NFS call  create %s\n", dentry->d_name.name);
 214         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 215         if (status == 0)
 216                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 217         dprintk("NFS reply create: %d\n", status);
 218         return status;
 219 }
 220
 221 /*
 222  * In NFSv2, mknod is grafted onto the create call.
 223  */
 224 static int
 225 nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 226                dev_t rdev)
 227 {
 228         struct nfs_fh fhandle;
 229         struct nfs_fattr fattr;
 230         struct nfs_createargs   arg = {
 231                 .fh             = NFS_FH(dir),
 232                 .name           = dentry->d_name.name,
 233                 .len            = dentry->d_name.len,
 234                 .sattr          = sattr
 235         };
 236         struct nfs_diropok      res = {
 237                 .fh             = &fhandle,
 238                 .fattr          = &fattr
 239         };
 240         struct rpc_message msg = {
 241                 .rpc_proc       = &nfs_procedures[NFSPROC_CREATE],
 242                 .rpc_argp       = &arg,
 243                 .rpc_resp       = &res,
 244         };
 245         int status, mode;
 246
 247         dprintk("NFS call  mknod %s\n", dentry->d_name.name);
 248
 249         mode = sattr->ia_mode;
 250         if (S_ISFIFO(mode)) {
 251                 sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR;
 252                 sattr->ia_valid &= ~ATTR_SIZE;
 253         } else if (S_ISCHR(mode) || S_ISBLK(mode)) {
 254                 sattr->ia_valid |= ATTR_SIZE;
 255                 sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
 256         }
 257
 258         nfs_fattr_init(&fattr);
 259         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 260         nfs_mark_for_revalidate(dir);
 261
 262         if (status == -EINVAL && S_ISFIFO(mode)) {
 263                 sattr->ia_mode = mode;
 264                 nfs_fattr_init(&fattr);
 265                 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 266         }
 267         if (status == 0)
 268                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 269         dprintk("NFS reply mknod: %d\n", status);
 270         return status;
 271 }
 272
 273 static int
 274 nfs_proc_remove(struct inode *dir, struct qstr *name)
 275 {
 276         struct nfs_diropargs    arg = {
 277                 .fh             = NFS_FH(dir),
 278                 .name           = name->name,
 279                 .len            = name->len
 280         };
 281         struct rpc_message      msg = {
 282                 .rpc_proc       = &nfs_procedures[NFSPROC_REMOVE],
 283                 .rpc_argp       = &arg,
 284         };
 285         int                     status;
 286
 287         dprintk("NFS call  remove %s\n", name->name);
 288         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 289         nfs_mark_for_revalidate(dir);
 290
 291         dprintk("NFS reply remove: %d\n", status);
 292         return status;
 293 }
 294
 295 static int
 296 nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
 297 {
 298         struct nfs_diropargs    *arg;
 299
 300         arg = kmalloc(sizeof(*arg), GFP_KERNEL);
 301         if (!arg)
 302                 return -ENOMEM;
 303         arg->fh = NFS_FH(dir->d_inode);
 304         arg->name = name->name;
 305         arg->len = name->len;
 306         msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
 307         msg->rpc_argp = arg;
 308         return 0;
 309 }
 310
 311 static int
 312 nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
 313 {
 314         struct rpc_message *msg = &task->tk_msg;
 315
 316         if (msg->rpc_argp) {
 317                 nfs_mark_for_revalidate(dir->d_inode);
 318                 kfree(msg->rpc_argp);
 319         }
 320         return 0;
 321 }
 322
 323 static int
 324 nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
 325                 struct inode *new_dir, struct qstr *new_name)
 326 {
 327         struct nfs_renameargs   arg = {
 328                 .fromfh         = NFS_FH(old_dir),
 329                 .fromname       = old_name->name,
 330                 .fromlen        = old_name->len,
 331                 .tofh           = NFS_FH(new_dir),
 332                 .toname         = new_name->name,
 333                 .tolen          = new_name->len
 334         };
 335         struct rpc_message msg = {
 336                 .rpc_proc       = &nfs_procedures[NFSPROC_RENAME],
 337                 .rpc_argp       = &arg,
 338         };
 339         int                     status;
 340
 341         dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);
 342         status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
 343         nfs_mark_for_revalidate(old_dir);
 344         nfs_mark_for_revalidate(new_dir);
 345         dprintk("NFS reply rename: %d\n", status);
 346         return status;
 347 }
 348
 349 static int
 350 nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 351 {
 352         struct nfs_linkargs     arg = {
 353                 .fromfh         = NFS_FH(inode),
 354                 .tofh           = NFS_FH(dir),
 355                 .toname         = name->name,
 356                 .tolen          = name->len
 357         };
 358         struct rpc_message msg = {
 359                 .rpc_proc       = &nfs_procedures[NFSPROC_LINK],
 360                 .rpc_argp       = &arg,
 361         };
 362         int                     status;
 363
 364         dprintk("NFS call  link %s\n", name->name);
 365         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 366         nfs_mark_for_revalidate(inode);
 367         nfs_mark_for_revalidate(dir);
 368         dprintk("NFS reply link: %d\n", status);
 369         return status;
 370 }
 371
 372 static int
 373 nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
 374                  unsigned int len, struct iattr *sattr)
 375 {
 376         struct nfs_fh fhandle;
 377         struct nfs_fattr fattr;
 378         struct nfs_symlinkargs  arg = {
 379                 .fromfh         = NFS_FH(dir),
 380                 .fromname       = dentry->d_name.name,
 381                 .fromlen        = dentry->d_name.len,
 382                 .pages          = &page,
 383                 .pathlen        = len,
 384                 .sattr          = sattr
 385         };
 386         struct rpc_message msg = {
 387                 .rpc_proc       = &nfs_procedures[NFSPROC_SYMLINK],
 388                 .rpc_argp       = &arg,
 389         };
 390         int                     status;
 391
 392         if (len > NFS2_MAXPATHLEN)
 393                 return -ENAMETOOLONG;
 394
 395         dprintk("NFS call  symlink %s\n", dentry->d_name.name);
 396
 397         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 398         nfs_mark_for_revalidate(dir);
 399
 400         /*
 401          * V2 SYMLINK requests don't return any attributes.  Setting the
 402          * filehandle size to zero indicates to nfs_instantiate that it
 403          * should fill in the data with a LOOKUP call on the wire.
 404          */
 405         if (status == 0) {
 406                 nfs_fattr_init(&fattr);
 407                 fhandle.size = 0;
 408                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 409         }
 410
 411         dprintk("NFS reply symlink: %d\n", status);
 412         return status;
 413 }
 414
 415 static int
 416 nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 417 {
 418         struct nfs_fh fhandle;
 419         struct nfs_fattr fattr;
 420         struct nfs_createargs   arg = {
 421                 .fh             = NFS_FH(dir),
 422                 .name           = dentry->d_name.name,
 423                 .len            = dentry->d_name.len,
 424                 .sattr          = sattr
 425         };
 426         struct nfs_diropok      res = {
 427                 .fh             = &fhandle,
 428                 .fattr          = &fattr
 429         };
 430         struct rpc_message msg = {
 431                 .rpc_proc       = &nfs_procedures[NFSPROC_MKDIR],
 432                 .rpc_argp       = &arg,
 433                 .rpc_resp       = &res,
 434         };
 435         int                     status;
 436
 437         dprintk("NFS call  mkdir %s\n", dentry->d_name.name);
 438         nfs_fattr_init(&fattr);
 439         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 440         nfs_mark_for_revalidate(dir);
 441         if (status == 0)
 442                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 443         dprintk("NFS reply mkdir: %d\n", status);
 444         return status;
 445 }
 446
 447 static int
 448 nfs_proc_rmdir(struct inode *dir, struct qstr *name)
 449 {
 450         struct nfs_diropargs    arg = {
 451                 .fh             = NFS_FH(dir),
 452                 .name           = name->name,
 453                 .len            = name->len
 454         };
 455         struct rpc_message msg = {
 456                 .rpc_proc       = &nfs_procedures[NFSPROC_RMDIR],
 457                 .rpc_argp       = &arg,
 458         };
 459         int                     status;
 460
 461         dprintk("NFS call  rmdir %s\n", name->name);
 462         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 463         nfs_mark_for_revalidate(dir);
 464         dprintk("NFS reply rmdir: %d\n", status);
 465         return status;
 466 }
 467
 468 /*
 469  * The READDIR implementation is somewhat hackish - we pass a temporary
 470  * buffer to the encode function, which installs it in the receive
 471  * the receive iovec. The decode function just parses the reply to make
 472  * sure it is syntactically correct; the entries itself are decoded
 473  * from nfs_readdir by calling the decode_entry function directly.
 474  */
 475 static int
 476 nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 477                  u64 cookie, struct page *page, unsigned int count, int plus)
 478 {
 479         struct inode            *dir = dentry->d_inode;
 480         struct nfs_readdirargs  arg = {
 481                 .fh             = NFS_FH(dir),
 482                 .cookie         = cookie,
 483                 .count          = count,
 484                 .pages          = &page,
 485         };
 486         struct rpc_message      msg = {
 487                 .rpc_proc       = &nfs_procedures[NFSPROC_READDIR],
 488                 .rpc_argp       = &arg,
 489                 .rpc_cred       = cred,
 490         };
 491         int                     status;
 492
 493         dprintk("NFS call  readdir %d\n", (unsigned int)cookie);
 494         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 495
 496         dprintk("NFS reply readdir: %d\n", status);
 497         return status;
 498 }
 499
 500 static int
 501 nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 502                         struct nfs_fsstat *stat)
 503 {
 504         struct nfs2_fsstat fsinfo;
 505         struct rpc_message msg = {
 506                 .rpc_proc       = &nfs_procedures[NFSPROC_STATFS],
 507                 .rpc_argp       = fhandle,
 508                 .rpc_resp       = &fsinfo,
 509         };
 510         int     status;
 511
 512         dprintk("NFS call  statfs\n");
 513         nfs_fattr_init(stat->fattr);
 514         status = rpc_call_sync(server->client, &msg, 0);
 515         dprintk("NFS reply statfs: %d\n", status);
 516         if (status)
 517                 goto out;
 518         stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
 519         stat->fbytes = (u64)fsinfo.bfree  * fsinfo.bsize;
 520         stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
 521         stat->tfiles = 0;
 522         stat->ffiles = 0;
 523         stat->afiles = 0;
 524 out:
 525         return status;
 526 }
 527
 528 static int
 529 nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 530                         struct nfs_fsinfo *info)
 531 {
 532         struct nfs2_fsstat fsinfo;
 533         struct rpc_message msg = {
 534                 .rpc_proc       = &nfs_procedures[NFSPROC_STATFS],
 535                 .rpc_argp       = fhandle,
 536                 .rpc_resp       = &fsinfo,
 537         };
 538         int     status;
 539
 540         dprintk("NFS call  fsinfo\n");
 541         nfs_fattr_init(info->fattr);
 542         status = rpc_call_sync(server->client, &msg, 0);
 543         dprintk("NFS reply fsinfo: %d\n", status);
 544         if (status)
 545                 goto out;
 546         info->rtmax  = NFS_MAXDATA;
 547         info->rtpref = fsinfo.tsize;
 548         info->rtmult = fsinfo.bsize;
 549         info->wtmax  = NFS_MAXDATA;
 550         info->wtpref = fsinfo.tsize;
 551         info->wtmult = fsinfo.bsize;
 552         info->dtpref = fsinfo.tsize;
 553         info->maxfilesize = 0x7FFFFFFF;
 554         info->lease_time = 0;
 555 out:
 556         return status;
 557 }
 558
 559 static int
 560 nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
 561                   struct nfs_pathconf *info)
 562 {
 563         info->max_link = 0;
 564         info->max_namelen = NFS2_MAXNAMLEN;
 565         return 0;
 566 }
 567
 568 static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
 569 {
 570         if (task->tk_status >= 0) {
 571                 nfs_refresh_inode(data->inode, data->res.fattr);
 572                 /* Emulate the eof flag, which isn't normally needed in NFSv2
 573                  * as it is guaranteed to always return the file attributes
 574                  */
 575                 if (data->args.offset + data->args.count >= data->res.fattr->size)
 576                         data->res.eof = 1;
 577         }
 578         return 0;
 579 }
 580
 581 static void nfs_proc_read_setup(struct nfs_read_data *data)
 582 {
 583         struct rpc_message      msg = {
 584                 .rpc_proc       = &nfs_procedures[NFSPROC_READ],
 585                 .rpc_argp       = &data->args,
 586                 .rpc_resp       = &data->res,
 587                 .rpc_cred       = data->cred,
 588         };
 589
 590         rpc_call_setup(&data->task, &msg, 0);
 591 }
 592
 593 static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
 594 {
 595         if (task->tk_status >= 0)
 596                 nfs_post_op_update_inode(data->inode, data->res.fattr);
 597         return 0;
 598 }
 599
 600 static void nfs_proc_write_setup(struct nfs_write_data *data, int how)
 601 {
 602         struct rpc_message      msg = {
 603                 .rpc_proc       = &nfs_procedures[NFSPROC_WRITE],
 604                 .rpc_argp       = &data->args,
 605                 .rpc_resp       = &data->res,
 606                 .rpc_cred       = data->cred,
 607         };
 608
 609         /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
 610         data->args.stable = NFS_FILE_SYNC;
 611
 612         /* Finalize the task. */
 613         rpc_call_setup(&data->task, &msg, 0);
 614 }
 615
 616 static void
 617 nfs_proc_commit_setup(struct nfs_write_data *data, int how)
 618 {
 619         BUG();
 620 }
 621
 622 static int
 623 nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
 624 {
 625         return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
 626 }
 627
 628
 629 const struct nfs_rpc_ops nfs_v2_clientops = {
 630         .version        = 2,                   /* protocol version */
 631         .dentry_ops     = &nfs_dentry_operations,
 632         .dir_inode_ops  = &nfs_dir_inode_operations,
 633         .file_inode_ops = &nfs_file_inode_operations,
 634         .getroot        = nfs_proc_get_root,
 635         .getattr        = nfs_proc_getattr,
 636         .setattr        = nfs_proc_setattr,
 637         .lookup         = nfs_proc_lookup,
 638         .access         = NULL,                /* access */
 639         .readlink       = nfs_proc_readlink,
 640         .create         = nfs_proc_create,
 641         .remove         = nfs_proc_remove,
 642         .unlink_setup   = nfs_proc_unlink_setup,
 643         .unlink_done    = nfs_proc_unlink_done,
 644         .rename         = nfs_proc_rename,
 645         .link           = nfs_proc_link,
 646         .symlink        = nfs_proc_symlink,
 647         .mkdir          = nfs_proc_mkdir,
 648         .rmdir          = nfs_proc_rmdir,
 649         .readdir        = nfs_proc_readdir,
 650         .mknod          = nfs_proc_mknod,
 651         .statfs         = nfs_proc_statfs,
 652         .fsinfo         = nfs_proc_fsinfo,
 653         .pathconf       = nfs_proc_pathconf,
 654         .decode_dirent  = nfs_decode_dirent,
 655         .read_setup     = nfs_proc_read_setup,
 656         .read_done      = nfs_read_done,
 657         .write_setup    = nfs_proc_write_setup,
 658         .write_done     = nfs_write_done,
 659         .commit_setup   = nfs_proc_commit_setup,
 660         .file_open      = nfs_open,
 661         .file_release   = nfs_release,
 662         .lock           = nfs_proc_lock,
 663 };