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
  48 #define NFSDBG_FACILITY         NFSDBG_PROC
  49
  50 extern struct rpc_procinfo nfs_procedures[];
  51
  52 /*
  53  * Bare-bones access to getattr: this is for nfs_read_super.
  54  */
  55 static int
  56 nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
  57                   struct nfs_fsinfo *info)
  58 {
  59         struct nfs_fattr *fattr = info->fattr;
  60         struct nfs2_fsstat fsinfo;
  61         int status;
  62
  63         dprintk("%s: call getattr\n", __FUNCTION__);
  64         nfs_fattr_init(fattr);
  65         status = rpc_call(server->client_sys, NFSPROC_GETATTR, fhandle, fattr, 0);
  66         dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
  67         if (status)
  68                 return status;
  69         dprintk("%s: call statfs\n", __FUNCTION__);
  70         status = rpc_call(server->client_sys, NFSPROC_STATFS, fhandle, &fsinfo, 0);
  71         dprintk("%s: reply statfs: %d\n", __FUNCTION__, status);
  72         if (status)
  73                 return status;
  74         info->rtmax  = NFS_MAXDATA;
  75         info->rtpref = fsinfo.tsize;
  76         info->rtmult = fsinfo.bsize;
  77         info->wtmax  = NFS_MAXDATA;
  78         info->wtpref = fsinfo.tsize;
  79         info->wtmult = fsinfo.bsize;
  80         info->dtpref = fsinfo.tsize;
  81         info->maxfilesize = 0x7FFFFFFF;
  82         info->lease_time = 0;
  83         return 0;
  84 }
  85
  86 /*
  87  * One function for each procedure in the NFS protocol.
  88  */
  89 static int
  90 nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
  91                 struct nfs_fattr *fattr)
  92 {
  93         int     status;
  94
  95         dprintk("NFS call  getattr\n");
  96         nfs_fattr_init(fattr);
  97         status = rpc_call(server->client, NFSPROC_GETATTR,
  98                                 fhandle, fattr, 0);
  99         dprintk("NFS reply getattr: %d\n", status);
 100         return status;
 101 }
 102
 103 static int
 104 nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 105                  struct iattr *sattr)
 106 {
 107         struct inode *inode = dentry->d_inode;
 108         struct nfs_sattrargs    arg = {
 109                 .fh     = NFS_FH(inode),
 110                 .sattr  = sattr
 111         };
 112         int     status;
 113
 114         dprintk("NFS call  setattr\n");
 115         nfs_fattr_init(fattr);
 116         status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0);
 117         if (status == 0)
 118                 nfs_setattr_update_inode(inode, sattr);
 119         dprintk("NFS reply setattr: %d\n", status);
 120         return status;
 121 }
 122
 123 static int
 124 nfs_proc_lookup(struct inode *dir, struct qstr *name,
 125                 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 126 {
 127         struct nfs_diropargs    arg = {
 128                 .fh             = NFS_FH(dir),
 129                 .name           = name->name,
 130                 .len            = name->len
 131         };
 132         struct nfs_diropok      res = {
 133                 .fh             = fhandle,
 134                 .fattr          = fattr
 135         };
 136         int                     status;
 137
 138         dprintk("NFS call  lookup %s\n", name->name);
 139         nfs_fattr_init(fattr);
 140         status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0);
 141         dprintk("NFS reply lookup: %d\n", status);
 142         return status;
 143 }
 144
 145 static int nfs_proc_readlink(struct inode *inode, struct page *page,
 146                 unsigned int pgbase, unsigned int pglen)
 147 {
 148         struct nfs_readlinkargs args = {
 149                 .fh             = NFS_FH(inode),
 150                 .pgbase         = pgbase,
 151                 .pglen          = pglen,
 152                 .pages          = &page
 153         };
 154         int                     status;
 155
 156         dprintk("NFS call  readlink\n");
 157         status = rpc_call(NFS_CLIENT(inode), NFSPROC_READLINK, &args, NULL, 0);
 158         dprintk("NFS reply readlink: %d\n", status);
 159         return status;
 160 }
 161
 162 static int nfs_proc_read(struct nfs_read_data *rdata)
 163 {
 164         int                     flags = rdata->flags;
 165         struct inode *          inode = rdata->inode;
 166         struct nfs_fattr *      fattr = rdata->res.fattr;
 167         struct rpc_message      msg = {
 168                 .rpc_proc       = &nfs_procedures[NFSPROC_READ],
 169                 .rpc_argp       = &rdata->args,
 170                 .rpc_resp       = &rdata->res,
 171                 .rpc_cred       = rdata->cred,
 172         };
 173         int                     status;
 174
 175         dprintk("NFS call  read %d @ %Ld\n", rdata->args.count,
 176                         (long long) rdata->args.offset);
 177         nfs_fattr_init(fattr);
 178         status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
 179         if (status >= 0) {
 180                 nfs_refresh_inode(inode, fattr);
 181                 /* Emulate the eof flag, which isn't normally needed in NFSv2
 182                  * as it is guaranteed to always return the file attributes
 183                  */
 184                 if (rdata->args.offset + rdata->args.count >= fattr->size)
 185                         rdata->res.eof = 1;
 186         }
 187         dprintk("NFS reply read: %d\n", status);
 188         return status;
 189 }
 190
 191 static int nfs_proc_write(struct nfs_write_data *wdata)
 192 {
 193         int                     flags = wdata->flags;
 194         struct inode *          inode = wdata->inode;
 195         struct nfs_fattr *      fattr = wdata->res.fattr;
 196         struct rpc_message      msg = {
 197                 .rpc_proc       = &nfs_procedures[NFSPROC_WRITE],
 198                 .rpc_argp       = &wdata->args,
 199                 .rpc_resp       = &wdata->res,
 200                 .rpc_cred       = wdata->cred,
 201         };
 202         int                     status;
 203
 204         dprintk("NFS call  write %d @ %Ld\n", wdata->args.count,
 205                         (long long) wdata->args.offset);
 206         nfs_fattr_init(fattr);
 207         status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
 208         if (status >= 0) {
 209                 nfs_post_op_update_inode(inode, fattr);
 210                 wdata->res.count = wdata->args.count;
 211                 wdata->verf.committed = NFS_FILE_SYNC;
 212         }
 213         dprintk("NFS reply write: %d\n", status);
 214         return status < 0? status : wdata->res.count;
 215 }
 216
 217 static int
 218 nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 219                 int flags, struct nameidata *nd)
 220 {
 221         struct nfs_fh           fhandle;
 222         struct nfs_fattr        fattr;
 223         struct nfs_createargs   arg = {
 224                 .fh             = NFS_FH(dir),
 225                 .name           = dentry->d_name.name,
 226                 .len            = dentry->d_name.len,
 227                 .sattr          = sattr
 228         };
 229         struct nfs_diropok      res = {
 230                 .fh             = &fhandle,
 231                 .fattr          = &fattr
 232         };
 233         int                     status;
 234
 235         nfs_fattr_init(&fattr);
 236         dprintk("NFS call  create %s\n", dentry->d_name.name);
 237         status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
 238         if (status == 0)
 239                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 240         dprintk("NFS reply create: %d\n", status);
 241         return status;
 242 }
 243
 244 /*
 245  * In NFSv2, mknod is grafted onto the create call.
 246  */
 247 static int
 248 nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 249                dev_t rdev)
 250 {
 251         struct nfs_fh fhandle;
 252         struct nfs_fattr fattr;
 253         struct nfs_createargs   arg = {
 254                 .fh             = NFS_FH(dir),
 255                 .name           = dentry->d_name.name,
 256                 .len            = dentry->d_name.len,
 257                 .sattr          = sattr
 258         };
 259         struct nfs_diropok      res = {
 260                 .fh             = &fhandle,
 261                 .fattr          = &fattr
 262         };
 263         int status, mode;
 264
 265         dprintk("NFS call  mknod %s\n", dentry->d_name.name);
 266
 267         mode = sattr->ia_mode;
 268         if (S_ISFIFO(mode)) {
 269                 sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR;
 270                 sattr->ia_valid &= ~ATTR_SIZE;
 271         } else if (S_ISCHR(mode) || S_ISBLK(mode)) {
 272                 sattr->ia_valid |= ATTR_SIZE;
 273                 sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
 274         }
 275
 276         nfs_fattr_init(&fattr);
 277         status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
 278         nfs_mark_for_revalidate(dir);
 279
 280         if (status == -EINVAL && S_ISFIFO(mode)) {
 281                 sattr->ia_mode = mode;
 282                 nfs_fattr_init(&fattr);
 283                 status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
 284         }
 285         if (status == 0)
 286                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 287         dprintk("NFS reply mknod: %d\n", status);
 288         return status;
 289 }
 290
 291 static int
 292 nfs_proc_remove(struct inode *dir, struct qstr *name)
 293 {
 294         struct nfs_diropargs    arg = {
 295                 .fh             = NFS_FH(dir),
 296                 .name           = name->name,
 297                 .len            = name->len
 298         };
 299         struct rpc_message      msg = {
 300                 .rpc_proc       = &nfs_procedures[NFSPROC_REMOVE],
 301                 .rpc_argp       = &arg,
 302                 .rpc_resp       = NULL,
 303                 .rpc_cred       = NULL
 304         };
 305         int                     status;
 306
 307         dprintk("NFS call  remove %s\n", name->name);
 308         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 309         nfs_mark_for_revalidate(dir);
 310
 311         dprintk("NFS reply remove: %d\n", status);
 312         return status;
 313 }
 314
 315 static int
 316 nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
 317 {
 318         struct nfs_diropargs    *arg;
 319
 320         arg = (struct nfs_diropargs *)kmalloc(sizeof(*arg), GFP_KERNEL);
 321         if (!arg)
 322                 return -ENOMEM;
 323         arg->fh = NFS_FH(dir->d_inode);
 324         arg->name = name->name;
 325         arg->len = name->len;
 326         msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
 327         msg->rpc_argp = arg;
 328         return 0;
 329 }
 330
 331 static int
 332 nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
 333 {
 334         struct rpc_message *msg = &task->tk_msg;
 335
 336         if (msg->rpc_argp) {
 337                 nfs_mark_for_revalidate(dir->d_inode);
 338                 kfree(msg->rpc_argp);
 339         }
 340         return 0;
 341 }
 342
 343 static int
 344 nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
 345                 struct inode *new_dir, struct qstr *new_name)
 346 {
 347         struct nfs_renameargs   arg = {
 348                 .fromfh         = NFS_FH(old_dir),
 349                 .fromname       = old_name->name,
 350                 .fromlen        = old_name->len,
 351                 .tofh           = NFS_FH(new_dir),
 352                 .toname         = new_name->name,
 353                 .tolen          = new_name->len
 354         };
 355         int                     status;
 356
 357         dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);
 358         status = rpc_call(NFS_CLIENT(old_dir), NFSPROC_RENAME, &arg, NULL, 0);
 359         nfs_mark_for_revalidate(old_dir);
 360         nfs_mark_for_revalidate(new_dir);
 361         dprintk("NFS reply rename: %d\n", status);
 362         return status;
 363 }
 364
 365 static int
 366 nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 367 {
 368         struct nfs_linkargs     arg = {
 369                 .fromfh         = NFS_FH(inode),
 370                 .tofh           = NFS_FH(dir),
 371                 .toname         = name->name,
 372                 .tolen          = name->len
 373         };
 374         int                     status;
 375
 376         dprintk("NFS call  link %s\n", name->name);
 377         status = rpc_call(NFS_CLIENT(inode), NFSPROC_LINK, &arg, NULL, 0);
 378         nfs_mark_for_revalidate(dir);
 379         dprintk("NFS reply link: %d\n", status);
 380         return status;
 381 }
 382
 383 static int
 384 nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
 385                  struct iattr *sattr, struct nfs_fh *fhandle,
 386                  struct nfs_fattr *fattr)
 387 {
 388         struct nfs_symlinkargs  arg = {
 389                 .fromfh         = NFS_FH(dir),
 390                 .fromname       = name->name,
 391                 .fromlen        = name->len,
 392                 .topath         = path->name,
 393                 .tolen          = path->len,
 394                 .sattr          = sattr
 395         };
 396         int                     status;
 397
 398         if (path->len > NFS2_MAXPATHLEN)
 399                 return -ENAMETOOLONG;
 400         dprintk("NFS call  symlink %s -> %s\n", name->name, path->name);
 401         nfs_fattr_init(fattr);
 402         fhandle->size = 0;
 403         status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0);
 404         nfs_mark_for_revalidate(dir);
 405         dprintk("NFS reply symlink: %d\n", status);
 406         return status;
 407 }
 408
 409 static int
 410 nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 411 {
 412         struct nfs_fh fhandle;
 413         struct nfs_fattr fattr;
 414         struct nfs_createargs   arg = {
 415                 .fh             = NFS_FH(dir),
 416                 .name           = dentry->d_name.name,
 417                 .len            = dentry->d_name.len,
 418                 .sattr          = sattr
 419         };
 420         struct nfs_diropok      res = {
 421                 .fh             = &fhandle,
 422                 .fattr          = &fattr
 423         };
 424         int                     status;
 425
 426         dprintk("NFS call  mkdir %s\n", dentry->d_name.name);
 427         nfs_fattr_init(&fattr);
 428         status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0);
 429         nfs_mark_for_revalidate(dir);
 430         if (status == 0)
 431                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 432         dprintk("NFS reply mkdir: %d\n", status);
 433         return status;
 434 }
 435
 436 static int
 437 nfs_proc_rmdir(struct inode *dir, struct qstr *name)
 438 {
 439         struct nfs_diropargs    arg = {
 440                 .fh             = NFS_FH(dir),
 441                 .name           = name->name,
 442                 .len            = name->len
 443         };
 444         int                     status;
 445
 446         dprintk("NFS call  rmdir %s\n", name->name);
 447         status = rpc_call(NFS_CLIENT(dir), NFSPROC_RMDIR, &arg, NULL, 0);
 448         nfs_mark_for_revalidate(dir);
 449         dprintk("NFS reply rmdir: %d\n", status);
 450         return status;
 451 }
 452
 453 /*
 454  * The READDIR implementation is somewhat hackish - we pass a temporary
 455  * buffer to the encode function, which installs it in the receive
 456  * the receive iovec. The decode function just parses the reply to make
 457  * sure it is syntactically correct; the entries itself are decoded
 458  * from nfs_readdir by calling the decode_entry function directly.
 459  */
 460 static int
 461 nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 462                  u64 cookie, struct page *page, unsigned int count, int plus)
 463 {
 464         struct inode            *dir = dentry->d_inode;
 465         struct nfs_readdirargs  arg = {
 466                 .fh             = NFS_FH(dir),
 467                 .cookie         = cookie,
 468                 .count          = count,
 469                 .pages          = &page
 470         };
 471         struct rpc_message      msg = {
 472                 .rpc_proc       = &nfs_procedures[NFSPROC_READDIR],
 473                 .rpc_argp       = &arg,
 474                 .rpc_resp       = NULL,
 475                 .rpc_cred       = cred
 476         };
 477         int                     status;
 478
 479         lock_kernel();
 480
 481         dprintk("NFS call  readdir %d\n", (unsigned int)cookie);
 482         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 483
 484         dprintk("NFS reply readdir: %d\n", status);
 485         unlock_kernel();
 486         return status;
 487 }
 488
 489 static int
 490 nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 491                         struct nfs_fsstat *stat)
 492 {
 493         struct nfs2_fsstat fsinfo;
 494         int     status;
 495
 496         dprintk("NFS call  statfs\n");
 497         nfs_fattr_init(stat->fattr);
 498         status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
 499         dprintk("NFS reply statfs: %d\n", status);
 500         if (status)
 501                 goto out;
 502         stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
 503         stat->fbytes = (u64)fsinfo.bfree  * fsinfo.bsize;
 504         stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
 505         stat->tfiles = 0;
 506         stat->ffiles = 0;
 507         stat->afiles = 0;
 508 out:
 509         return status;
 510 }
 511
 512 static int
 513 nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 514                         struct nfs_fsinfo *info)
 515 {
 516         struct nfs2_fsstat fsinfo;
 517         int     status;
 518
 519         dprintk("NFS call  fsinfo\n");
 520         nfs_fattr_init(info->fattr);
 521         status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
 522         dprintk("NFS reply fsinfo: %d\n", status);
 523         if (status)
 524                 goto out;
 525         info->rtmax  = NFS_MAXDATA;
 526         info->rtpref = fsinfo.tsize;
 527         info->rtmult = fsinfo.bsize;
 528         info->wtmax  = NFS_MAXDATA;
 529         info->wtpref = fsinfo.tsize;
 530         info->wtmult = fsinfo.bsize;
 531         info->dtpref = fsinfo.tsize;
 532         info->maxfilesize = 0x7FFFFFFF;
 533         info->lease_time = 0;
 534 out:
 535         return status;
 536 }
 537
 538 static int
 539 nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
 540                   struct nfs_pathconf *info)
 541 {
 542         info->max_link = 0;
 543         info->max_namelen = NFS2_MAXNAMLEN;
 544         return 0;
 545 }
 546
 547 extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int);
 548
 549 static void
 550 nfs_read_done(struct rpc_task *task)
 551 {
 552         struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata;
 553
 554         if (task->tk_status >= 0) {
 555                 nfs_refresh_inode(data->inode, data->res.fattr);
 556                 /* Emulate the eof flag, which isn't normally needed in NFSv2
 557                  * as it is guaranteed to always return the file attributes
 558                  */
 559                 if (data->args.offset + data->args.count >= data->res.fattr->size)
 560                         data->res.eof = 1;
 561         }
 562         nfs_readpage_result(task);
 563 }
 564
 565 static void
 566 nfs_proc_read_setup(struct nfs_read_data *data)
 567 {
 568         struct rpc_task         *task = &data->task;
 569         struct inode            *inode = data->inode;
 570         int                     flags;
 571         struct rpc_message      msg = {
 572                 .rpc_proc       = &nfs_procedures[NFSPROC_READ],
 573                 .rpc_argp       = &data->args,
 574                 .rpc_resp       = &data->res,
 575                 .rpc_cred       = data->cred,
 576         };
 577
 578         /* N.B. Do we need to test? Never called for swapfile inode */
 579         flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
 580
 581         /* Finalize the task. */
 582         rpc_init_task(task, NFS_CLIENT(inode), nfs_read_done, flags);
 583         rpc_call_setup(task, &msg, 0);
 584 }
 585
 586 static void
 587 nfs_write_done(struct rpc_task *task)
 588 {
 589         struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata;
 590
 591         if (task->tk_status >= 0)
 592                 nfs_post_op_update_inode(data->inode, data->res.fattr);
 593         nfs_writeback_done(task);
 594 }
 595
 596 static void
 597 nfs_proc_write_setup(struct nfs_write_data *data, int how)
 598 {
 599         struct rpc_task         *task = &data->task;
 600         struct inode            *inode = data->inode;
 601         int                     flags;
 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         /* Set the initial flags for the task.  */
 613         flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
 614
 615         /* Finalize the task. */
 616         rpc_init_task(task, NFS_CLIENT(inode), nfs_write_done, flags);
 617         rpc_call_setup(task, &msg, 0);
 618 }
 619
 620 static void
 621 nfs_proc_commit_setup(struct nfs_write_data *data, int how)
 622 {
 623         BUG();
 624 }
 625
 626 static int
 627 nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
 628 {
 629         return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
 630 }
 631
 632
 633 struct nfs_rpc_ops      nfs_v2_clientops = {
 634         .version        = 2,                   /* protocol version */
 635         .dentry_ops     = &nfs_dentry_operations,
 636         .dir_inode_ops  = &nfs_dir_inode_operations,
 637         .file_inode_ops = &nfs_file_inode_operations,
 638         .getroot        = nfs_proc_get_root,
 639         .getattr        = nfs_proc_getattr,
 640         .setattr        = nfs_proc_setattr,
 641         .lookup         = nfs_proc_lookup,
 642         .access         = NULL,                /* access */
 643         .readlink       = nfs_proc_readlink,
 644         .read           = nfs_proc_read,
 645         .write          = nfs_proc_write,
 646         .commit         = NULL,                /* commit */
 647         .create         = nfs_proc_create,
 648         .remove         = nfs_proc_remove,
 649         .unlink_setup   = nfs_proc_unlink_setup,
 650         .unlink_done    = nfs_proc_unlink_done,
 651         .rename         = nfs_proc_rename,
 652         .link           = nfs_proc_link,
 653         .symlink        = nfs_proc_symlink,
 654         .mkdir          = nfs_proc_mkdir,
 655         .rmdir          = nfs_proc_rmdir,
 656         .readdir        = nfs_proc_readdir,
 657         .mknod          = nfs_proc_mknod,
 658         .statfs         = nfs_proc_statfs,
 659         .fsinfo         = nfs_proc_fsinfo,
 660         .pathconf       = nfs_proc_pathconf,
 661         .decode_dirent  = nfs_decode_dirent,
 662         .read_setup     = nfs_proc_read_setup,
 663         .write_setup    = nfs_proc_write_setup,
 664         .commit_setup   = nfs_proc_commit_setup,
 665         .file_open      = nfs_open,
 666         .file_release   = nfs_release,
 667         .lock           = nfs_proc_lock,
 668 };