fs/nfs/nfs3proc.c

   1 /*
   2  *  linux/fs/nfs/nfs3proc.c
   3  *
   4  *  Client-side NFSv3 procedures stubs.
   5  *
   6  *  Copyright (C) 1997, Olaf Kirch
   7  */
   8
   9 #include <linux/mm.h>
  10 #include <linux/utsname.h>
  11 #include <linux/errno.h>
  12 #include <linux/string.h>
  13 #include <linux/sunrpc/clnt.h>
  14 #include <linux/nfs.h>
  15 #include <linux/nfs3.h>
  16 #include <linux/nfs_fs.h>
  17 #include <linux/nfs_page.h>
  18 #include <linux/lockd/bind.h>
  19 #include <linux/nfs_mount.h>
  20
  21 #include "iostat.h"
  22 #include "internal.h"
  23
  24 #define NFSDBG_FACILITY         NFSDBG_PROC
  25
  26 /* A wrapper to handle the EJUKEBOX error message */
  27 static int
  28 nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
  29 {
  30         int res;
  31         do {
  32                 res = rpc_call_sync(clnt, msg, flags);
  33                 if (res != -EJUKEBOX)
  34                         break;
  35                 schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
  36                 res = -ERESTARTSYS;
  37         } while (!fatal_signal_pending(current));
  38         return res;
  39 }
  40
  41 #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
  42
  43 static int
  44 nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
  45 {
  46         if (task->tk_status != -EJUKEBOX)
  47                 return 0;
  48         nfs_inc_stats(inode, NFSIOS_DELAY);
  49         task->tk_status = 0;
  50         rpc_restart_call(task);
  51         rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
  52         return 1;
  53 }
  54
  55 static int
  56 do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
  57                  struct nfs_fsinfo *info)
  58 {
  59         struct rpc_message msg = {
  60                 .rpc_proc       = &nfs3_procedures[NFS3PROC_FSINFO],
  61                 .rpc_argp       = fhandle,
  62                 .rpc_resp       = info,
  63         };
  64         int     status;
  65
  66         dprintk("%s: call  fsinfo\n", __func__);
  67         nfs_fattr_init(info->fattr);
  68         status = rpc_call_sync(client, &msg, 0);
  69         dprintk("%s: reply fsinfo: %d\n", __func__, status);
  70         if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
  71                 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
  72                 msg.rpc_resp = info->fattr;
  73                 status = rpc_call_sync(client, &msg, 0);
  74                 dprintk("%s: reply getattr: %d\n", __func__, status);
  75         }
  76         return status;
  77 }
  78
  79 /*
  80  * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
  81  */
  82 static int
  83 nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
  84                    struct nfs_fsinfo *info)
  85 {
  86         int     status;
  87
  88         status = do_proc_get_root(server->client, fhandle, info);
  89         if (status && server->nfs_client->cl_rpcclient != server->client)
  90                 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
  91         return status;
  92 }
  93
  94 /*
  95  * One function for each procedure in the NFS protocol.
  96  */
  97 static int
  98 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
  99                 struct nfs_fattr *fattr)
 100 {
 101         struct rpc_message msg = {
 102                 .rpc_proc       = &nfs3_procedures[NFS3PROC_GETATTR],
 103                 .rpc_argp       = fhandle,
 104                 .rpc_resp       = fattr,
 105         };
 106         int     status;
 107
 108         dprintk("NFS call  getattr\n");
 109         nfs_fattr_init(fattr);
 110         status = rpc_call_sync(server->client, &msg, 0);
 111         dprintk("NFS reply getattr: %d\n", status);
 112         return status;
 113 }
 114
 115 static int
 116 nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 117                         struct iattr *sattr)
 118 {
 119         struct inode *inode = dentry->d_inode;
 120         struct nfs3_sattrargs   arg = {
 121                 .fh             = NFS_FH(inode),
 122                 .sattr          = sattr,
 123         };
 124         struct rpc_message msg = {
 125                 .rpc_proc       = &nfs3_procedures[NFS3PROC_SETATTR],
 126                 .rpc_argp       = &arg,
 127                 .rpc_resp       = fattr,
 128         };
 129         int     status;
 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 nfs3_proc_lookup(struct inode *dir, struct qstr *name,
 142                  struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 143 {
 144         struct nfs_fattr        dir_attr;
 145         struct nfs3_diropargs   arg = {
 146                 .fh             = NFS_FH(dir),
 147                 .name           = name->name,
 148                 .len            = name->len
 149         };
 150         struct nfs3_diropres    res = {
 151                 .dir_attr       = &dir_attr,
 152                 .fh             = fhandle,
 153                 .fattr          = fattr
 154         };
 155         struct rpc_message msg = {
 156                 .rpc_proc       = &nfs3_procedures[NFS3PROC_LOOKUP],
 157                 .rpc_argp       = &arg,
 158                 .rpc_resp       = &res,
 159         };
 160         int                     status;
 161
 162         dprintk("NFS call  lookup %s\n", name->name);
 163         nfs_fattr_init(&dir_attr);
 164         nfs_fattr_init(fattr);
 165         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 166         nfs_refresh_inode(dir, &dir_attr);
 167         if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
 168                 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
 169                 msg.rpc_argp = fhandle;
 170                 msg.rpc_resp = fattr;
 171                 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 172         }
 173         dprintk("NFS reply lookup: %d\n", status);
 174         return status;
 175 }
 176
 177 static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
 178 {
 179         struct nfs_fattr        fattr;
 180         struct nfs3_accessargs  arg = {
 181                 .fh             = NFS_FH(inode),
 182         };
 183         struct nfs3_accessres   res = {
 184                 .fattr          = &fattr,
 185         };
 186         struct rpc_message msg = {
 187                 .rpc_proc       = &nfs3_procedures[NFS3PROC_ACCESS],
 188                 .rpc_argp       = &arg,
 189                 .rpc_resp       = &res,
 190                 .rpc_cred       = entry->cred,
 191         };
 192         int mode = entry->mask;
 193         int status;
 194
 195         dprintk("NFS call  access\n");
 196
 197         if (mode & MAY_READ)
 198                 arg.access |= NFS3_ACCESS_READ;
 199         if (S_ISDIR(inode->i_mode)) {
 200                 if (mode & MAY_WRITE)
 201                         arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
 202                 if (mode & MAY_EXEC)
 203                         arg.access |= NFS3_ACCESS_LOOKUP;
 204         } else {
 205                 if (mode & MAY_WRITE)
 206                         arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
 207                 if (mode & MAY_EXEC)
 208                         arg.access |= NFS3_ACCESS_EXECUTE;
 209         }
 210         nfs_fattr_init(&fattr);
 211         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 212         nfs_refresh_inode(inode, &fattr);
 213         if (status == 0) {
 214                 entry->mask = 0;
 215                 if (res.access & NFS3_ACCESS_READ)
 216                         entry->mask |= MAY_READ;
 217                 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
 218                         entry->mask |= MAY_WRITE;
 219                 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
 220                         entry->mask |= MAY_EXEC;
 221         }
 222         dprintk("NFS reply access: %d\n", status);
 223         return status;
 224 }
 225
 226 static int nfs3_proc_readlink(struct inode *inode, struct page *page,
 227                 unsigned int pgbase, unsigned int pglen)
 228 {
 229         struct nfs_fattr        fattr;
 230         struct nfs3_readlinkargs args = {
 231                 .fh             = NFS_FH(inode),
 232                 .pgbase         = pgbase,
 233                 .pglen          = pglen,
 234                 .pages          = &page
 235         };
 236         struct rpc_message msg = {
 237                 .rpc_proc       = &nfs3_procedures[NFS3PROC_READLINK],
 238                 .rpc_argp       = &args,
 239                 .rpc_resp       = &fattr,
 240         };
 241         int                     status;
 242
 243         dprintk("NFS call  readlink\n");
 244         nfs_fattr_init(&fattr);
 245         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 246         nfs_refresh_inode(inode, &fattr);
 247         dprintk("NFS reply readlink: %d\n", status);
 248         return status;
 249 }
 250
 251 /*
 252  * Create a regular file.
 253  * For now, we don't implement O_EXCL.
 254  */
 255 static int
 256 nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 257                  int flags, struct nameidata *nd)
 258 {
 259         struct nfs_fh           fhandle;
 260         struct nfs_fattr        fattr;
 261         struct nfs_fattr        dir_attr;
 262         struct nfs3_createargs  arg = {
 263                 .fh             = NFS_FH(dir),
 264                 .name           = dentry->d_name.name,
 265                 .len            = dentry->d_name.len,
 266                 .sattr          = sattr,
 267         };
 268         struct nfs3_diropres    res = {
 269                 .dir_attr       = &dir_attr,
 270                 .fh             = &fhandle,
 271                 .fattr          = &fattr
 272         };
 273         struct rpc_message msg = {
 274                 .rpc_proc       = &nfs3_procedures[NFS3PROC_CREATE],
 275                 .rpc_argp       = &arg,
 276                 .rpc_resp       = &res,
 277         };
 278         mode_t mode = sattr->ia_mode;
 279         int status;
 280
 281         dprintk("NFS call  create %s\n", dentry->d_name.name);
 282         arg.createmode = NFS3_CREATE_UNCHECKED;
 283         if (flags & O_EXCL) {
 284                 arg.createmode  = NFS3_CREATE_EXCLUSIVE;
 285                 arg.verifier[0] = jiffies;
 286                 arg.verifier[1] = current->pid;
 287         }
 288
 289         sattr->ia_mode &= ~current->fs->umask;
 290
 291 again:
 292         nfs_fattr_init(&dir_attr);
 293         nfs_fattr_init(&fattr);
 294         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 295         nfs_refresh_inode(dir, &dir_attr);
 296
 297         /* If the server doesn't support the exclusive creation semantics,
 298          * try again with simple 'guarded' mode. */
 299         if (status == -ENOTSUPP) {
 300                 switch (arg.createmode) {
 301                         case NFS3_CREATE_EXCLUSIVE:
 302                                 arg.createmode = NFS3_CREATE_GUARDED;
 303                                 break;
 304
 305                         case NFS3_CREATE_GUARDED:
 306                                 arg.createmode = NFS3_CREATE_UNCHECKED;
 307                                 break;
 308
 309                         case NFS3_CREATE_UNCHECKED:
 310                                 goto out;
 311                 }
 312                 goto again;
 313         }
 314
 315         if (status == 0)
 316                 status = nfs_instantiate(dentry, &fhandle, &fattr);
 317         if (status != 0)
 318                 goto out;
 319
 320         /* When we created the file with exclusive semantics, make
 321          * sure we set the attributes afterwards. */
 322         if (arg.createmode == NFS3_CREATE_EXCLUSIVE) {
 323                 dprintk("NFS call  setattr (post-create)\n");
 324
 325                 if (!(sattr->ia_valid & ATTR_ATIME_SET))
 326                         sattr->ia_valid |= ATTR_ATIME;
 327                 if (!(sattr->ia_valid & ATTR_MTIME_SET))
 328                         sattr->ia_valid |= ATTR_MTIME;
 329
 330                 /* Note: we could use a guarded setattr here, but I'm
 331                  * not sure this buys us anything (and I'd have
 332                  * to revamp the NFSv3 XDR code) */
 333                 status = nfs3_proc_setattr(dentry, &fattr, sattr);
 334                 nfs_post_op_update_inode(dentry->d_inode, &fattr);
 335                 dprintk("NFS reply setattr (post-create): %d\n", status);
 336         }
 337         if (status != 0)
 338                 goto out;
 339         status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
 340 out:
 341         dprintk("NFS reply create: %d\n", status);
 342         return status;
 343 }
 344
 345 static int
 346 nfs3_proc_remove(struct inode *dir, struct qstr *name)
 347 {
 348         struct nfs_removeargs arg = {
 349                 .fh = NFS_FH(dir),
 350                 .name.len = name->len,
 351                 .name.name = name->name,
 352         };
 353         struct nfs_removeres res;
 354         struct rpc_message msg = {
 355                 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
 356                 .rpc_argp = &arg,
 357                 .rpc_resp = &res,
 358         };
 359         int                     status;
 360
 361         dprintk("NFS call  remove %s\n", name->name);
 362         nfs_fattr_init(&res.dir_attr);
 363         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 364         nfs_post_op_update_inode(dir, &res.dir_attr);
 365         dprintk("NFS reply remove: %d\n", status);
 366         return status;
 367 }
 368
 369 static void
 370 nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
 371 {
 372         msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
 373 }
 374
 375 static int
 376 nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
 377 {
 378         struct nfs_removeres *res;
 379         if (nfs3_async_handle_jukebox(task, dir))
 380                 return 0;
 381         res = task->tk_msg.rpc_resp;
 382         nfs_post_op_update_inode(dir, &res->dir_attr);
 383         return 1;
 384 }
 385
 386 static int
 387 nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
 388                  struct inode *new_dir, struct qstr *new_name)
 389 {
 390         struct nfs_fattr        old_dir_attr, new_dir_attr;
 391         struct nfs3_renameargs  arg = {
 392                 .fromfh         = NFS_FH(old_dir),
 393                 .fromname       = old_name->name,
 394                 .fromlen        = old_name->len,
 395                 .tofh           = NFS_FH(new_dir),
 396                 .toname         = new_name->name,
 397                 .tolen          = new_name->len
 398         };
 399         struct nfs3_renameres   res = {
 400                 .fromattr       = &old_dir_attr,
 401                 .toattr         = &new_dir_attr
 402         };
 403         struct rpc_message msg = {
 404                 .rpc_proc       = &nfs3_procedures[NFS3PROC_RENAME],
 405                 .rpc_argp       = &arg,
 406                 .rpc_resp       = &res,
 407         };
 408         int                     status;
 409
 410         dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);
 411         nfs_fattr_init(&old_dir_attr);
 412         nfs_fattr_init(&new_dir_attr);
 413         status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
 414         nfs_post_op_update_inode(old_dir, &old_dir_attr);
 415         nfs_post_op_update_inode(new_dir, &new_dir_attr);
 416         dprintk("NFS reply rename: %d\n", status);
 417         return status;
 418 }
 419
 420 static int
 421 nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 422 {
 423         struct nfs_fattr        dir_attr, fattr;
 424         struct nfs3_linkargs    arg = {
 425                 .fromfh         = NFS_FH(inode),
 426                 .tofh           = NFS_FH(dir),
 427                 .toname         = name->name,
 428                 .tolen          = name->len
 429         };
 430         struct nfs3_linkres     res = {
 431                 .dir_attr       = &dir_attr,
 432                 .fattr          = &fattr
 433         };
 434         struct rpc_message msg = {
 435                 .rpc_proc       = &nfs3_procedures[NFS3PROC_LINK],
 436                 .rpc_argp       = &arg,
 437                 .rpc_resp       = &res,
 438         };
 439         int                     status;
 440
 441         dprintk("NFS call  link %s\n", name->name);
 442         nfs_fattr_init(&dir_attr);
 443         nfs_fattr_init(&fattr);
 444         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 445         nfs_post_op_update_inode(dir, &dir_attr);
 446         nfs_post_op_update_inode(inode, &fattr);
 447         dprintk("NFS reply link: %d\n", status);
 448         return status;
 449 }
 450
 451 static int
 452 nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
 453                   unsigned int len, struct iattr *sattr)
 454 {
 455         struct nfs_fh fhandle;
 456         struct nfs_fattr fattr, dir_attr;
 457         struct nfs3_symlinkargs arg = {
 458                 .fromfh         = NFS_FH(dir),
 459                 .fromname       = dentry->d_name.name,
 460                 .fromlen        = dentry->d_name.len,
 461                 .pages          = &page,
 462                 .pathlen        = len,
 463                 .sattr          = sattr
 464         };
 465         struct nfs3_diropres    res = {
 466                 .dir_attr       = &dir_attr,
 467                 .fh             = &fhandle,
 468                 .fattr          = &fattr
 469         };
 470         struct rpc_message msg = {
 471                 .rpc_proc       = &nfs3_procedures[NFS3PROC_SYMLINK],
 472                 .rpc_argp       = &arg,
 473                 .rpc_resp       = &res,
 474         };
 475         int                     status;
 476
 477         if (len > NFS3_MAXPATHLEN)
 478                 return -ENAMETOOLONG;
 479
 480         dprintk("NFS call  symlink %s\n", dentry->d_name.name);
 481
 482         nfs_fattr_init(&dir_attr);
 483         nfs_fattr_init(&fattr);
 484         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 485         nfs_post_op_update_inode(dir, &dir_attr);
 486         if (status != 0)
 487                 goto out;
 488         status = nfs_instantiate(dentry, &fhandle, &fattr);
 489 out:
 490         dprintk("NFS reply symlink: %d\n", status);
 491         return status;
 492 }
 493
 494 static int
 495 nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 496 {
 497         struct nfs_fh fhandle;
 498         struct nfs_fattr fattr, dir_attr;
 499         struct nfs3_mkdirargs   arg = {
 500                 .fh             = NFS_FH(dir),
 501                 .name           = dentry->d_name.name,
 502                 .len            = dentry->d_name.len,
 503                 .sattr          = sattr
 504         };
 505         struct nfs3_diropres    res = {
 506                 .dir_attr       = &dir_attr,
 507                 .fh             = &fhandle,
 508                 .fattr          = &fattr
 509         };
 510         struct rpc_message msg = {
 511                 .rpc_proc       = &nfs3_procedures[NFS3PROC_MKDIR],
 512                 .rpc_argp       = &arg,
 513                 .rpc_resp       = &res,
 514         };
 515         int mode = sattr->ia_mode;
 516         int status;
 517
 518         dprintk("NFS call  mkdir %s\n", dentry->d_name.name);
 519
 520         sattr->ia_mode &= ~current->fs->umask;
 521
 522         nfs_fattr_init(&dir_attr);
 523         nfs_fattr_init(&fattr);
 524         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 525         nfs_post_op_update_inode(dir, &dir_attr);
 526         if (status != 0)
 527                 goto out;
 528         status = nfs_instantiate(dentry, &fhandle, &fattr);
 529         if (status != 0)
 530                 goto out;
 531         status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
 532 out:
 533         dprintk("NFS reply mkdir: %d\n", status);
 534         return status;
 535 }
 536
 537 static int
 538 nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
 539 {
 540         struct nfs_fattr        dir_attr;
 541         struct nfs3_diropargs   arg = {
 542                 .fh             = NFS_FH(dir),
 543                 .name           = name->name,
 544                 .len            = name->len
 545         };
 546         struct rpc_message msg = {
 547                 .rpc_proc       = &nfs3_procedures[NFS3PROC_RMDIR],
 548                 .rpc_argp       = &arg,
 549                 .rpc_resp       = &dir_attr,
 550         };
 551         int                     status;
 552
 553         dprintk("NFS call  rmdir %s\n", name->name);
 554         nfs_fattr_init(&dir_attr);
 555         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 556         nfs_post_op_update_inode(dir, &dir_attr);
 557         dprintk("NFS reply rmdir: %d\n", status);
 558         return status;
 559 }
 560
 561 /*
 562  * The READDIR implementation is somewhat hackish - we pass the user buffer
 563  * to the encode function, which installs it in the receive iovec.
 564  * The decode function itself doesn't perform any decoding, it just makes
 565  * sure the reply is syntactically correct.
 566  *
 567  * Also note that this implementation handles both plain readdir and
 568  * readdirplus.
 569  */
 570 static int
 571 nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 572                   u64 cookie, struct page *page, unsigned int count, int plus)
 573 {
 574         struct inode            *dir = dentry->d_inode;
 575         struct nfs_fattr        dir_attr;
 576         __be32                  *verf = NFS_COOKIEVERF(dir);
 577         struct nfs3_readdirargs arg = {
 578                 .fh             = NFS_FH(dir),
 579                 .cookie         = cookie,
 580                 .verf           = {verf[0], verf[1]},
 581                 .plus           = plus,
 582                 .count          = count,
 583                 .pages          = &page
 584         };
 585         struct nfs3_readdirres  res = {
 586                 .dir_attr       = &dir_attr,
 587                 .verf           = verf,
 588                 .plus           = plus
 589         };
 590         struct rpc_message      msg = {
 591                 .rpc_proc       = &nfs3_procedures[NFS3PROC_READDIR],
 592                 .rpc_argp       = &arg,
 593                 .rpc_resp       = &res,
 594                 .rpc_cred       = cred
 595         };
 596         int                     status;
 597
 598         if (plus)
 599                 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
 600
 601         dprintk("NFS call  readdir%s %d\n",
 602                         plus? "plus" : "", (unsigned int) cookie);
 603
 604         nfs_fattr_init(&dir_attr);
 605         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 606
 607         nfs_invalidate_atime(dir);
 608
 609         nfs_refresh_inode(dir, &dir_attr);
 610         dprintk("NFS reply readdir: %d\n", status);
 611         return status;
 612 }
 613
 614 static int
 615 nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 616                 dev_t rdev)
 617 {
 618         struct nfs_fh fh;
 619         struct nfs_fattr fattr, dir_attr;
 620         struct nfs3_mknodargs   arg = {
 621                 .fh             = NFS_FH(dir),
 622                 .name           = dentry->d_name.name,
 623                 .len            = dentry->d_name.len,
 624                 .sattr          = sattr,
 625                 .rdev           = rdev
 626         };
 627         struct nfs3_diropres    res = {
 628                 .dir_attr       = &dir_attr,
 629                 .fh             = &fh,
 630                 .fattr          = &fattr
 631         };
 632         struct rpc_message msg = {
 633                 .rpc_proc       = &nfs3_procedures[NFS3PROC_MKNOD],
 634                 .rpc_argp       = &arg,
 635                 .rpc_resp       = &res,
 636         };
 637         mode_t mode = sattr->ia_mode;
 638         int status;
 639
 640         switch (sattr->ia_mode & S_IFMT) {
 641         case S_IFBLK:   arg.type = NF3BLK;  break;
 642         case S_IFCHR:   arg.type = NF3CHR;  break;
 643         case S_IFIFO:   arg.type = NF3FIFO; break;
 644         case S_IFSOCK:  arg.type = NF3SOCK; break;
 645         default:        return -EINVAL;
 646         }
 647
 648         dprintk("NFS call  mknod %s %u:%u\n", dentry->d_name.name,
 649                         MAJOR(rdev), MINOR(rdev));
 650
 651         sattr->ia_mode &= ~current->fs->umask;
 652
 653         nfs_fattr_init(&dir_attr);
 654         nfs_fattr_init(&fattr);
 655         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 656         nfs_post_op_update_inode(dir, &dir_attr);
 657         if (status != 0)
 658                 goto out;
 659         status = nfs_instantiate(dentry, &fh, &fattr);
 660         if (status != 0)
 661                 goto out;
 662         status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
 663 out:
 664         dprintk("NFS reply mknod: %d\n", status);
 665         return status;
 666 }
 667
 668 static int
 669 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 670                  struct nfs_fsstat *stat)
 671 {
 672         struct rpc_message msg = {
 673                 .rpc_proc       = &nfs3_procedures[NFS3PROC_FSSTAT],
 674                 .rpc_argp       = fhandle,
 675                 .rpc_resp       = stat,
 676         };
 677         int     status;
 678
 679         dprintk("NFS call  fsstat\n");
 680         nfs_fattr_init(stat->fattr);
 681         status = rpc_call_sync(server->client, &msg, 0);
 682         dprintk("NFS reply statfs: %d\n", status);
 683         return status;
 684 }
 685
 686 static int
 687 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 688                  struct nfs_fsinfo *info)
 689 {
 690         struct rpc_message msg = {
 691                 .rpc_proc       = &nfs3_procedures[NFS3PROC_FSINFO],
 692                 .rpc_argp       = fhandle,
 693                 .rpc_resp       = info,
 694         };
 695         int     status;
 696
 697         dprintk("NFS call  fsinfo\n");
 698         nfs_fattr_init(info->fattr);
 699         status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
 700         dprintk("NFS reply fsinfo: %d\n", status);
 701         return status;
 702 }
 703
 704 static int
 705 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
 706                    struct nfs_pathconf *info)
 707 {
 708         struct rpc_message msg = {
 709                 .rpc_proc       = &nfs3_procedures[NFS3PROC_PATHCONF],
 710                 .rpc_argp       = fhandle,
 711                 .rpc_resp       = info,
 712         };
 713         int     status;
 714
 715         dprintk("NFS call  pathconf\n");
 716         nfs_fattr_init(info->fattr);
 717         status = rpc_call_sync(server->client, &msg, 0);
 718         dprintk("NFS reply pathconf: %d\n", status);
 719         return status;
 720 }
 721
 722 static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
 723 {
 724         if (nfs3_async_handle_jukebox(task, data->inode))
 725                 return -EAGAIN;
 726
 727         nfs_invalidate_atime(data->inode);
 728         nfs_refresh_inode(data->inode, &data->fattr);
 729         return 0;
 730 }
 731
 732 static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
 733 {
 734         msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
 735 }
 736
 737 static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
 738 {
 739         if (nfs3_async_handle_jukebox(task, data->inode))
 740                 return -EAGAIN;
 741         if (task->tk_status >= 0)
 742                 nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
 743         return 0;
 744 }
 745
 746 static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
 747 {
 748         msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
 749 }
 750
 751 static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
 752 {
 753         if (nfs3_async_handle_jukebox(task, data->inode))
 754                 return -EAGAIN;
 755         nfs_refresh_inode(data->inode, data->res.fattr);
 756         return 0;
 757 }
 758
 759 static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
 760 {
 761         msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
 762 }
 763
 764 static int
 765 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
 766 {
 767         struct inode *inode = filp->f_path.dentry->d_inode;
 768
 769         return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
 770 }
 771
 772 const struct nfs_rpc_ops nfs_v3_clientops = {
 773         .version        = 3,                    /* protocol version */
 774         .dentry_ops     = &nfs_dentry_operations,
 775         .dir_inode_ops  = &nfs3_dir_inode_operations,
 776         .file_inode_ops = &nfs3_file_inode_operations,
 777         .getroot        = nfs3_proc_get_root,
 778         .getattr        = nfs3_proc_getattr,
 779         .setattr        = nfs3_proc_setattr,
 780         .lookup         = nfs3_proc_lookup,
 781         .access         = nfs3_proc_access,
 782         .readlink       = nfs3_proc_readlink,
 783         .create         = nfs3_proc_create,
 784         .remove         = nfs3_proc_remove,
 785         .unlink_setup   = nfs3_proc_unlink_setup,
 786         .unlink_done    = nfs3_proc_unlink_done,
 787         .rename         = nfs3_proc_rename,
 788         .link           = nfs3_proc_link,
 789         .symlink        = nfs3_proc_symlink,
 790         .mkdir          = nfs3_proc_mkdir,
 791         .rmdir          = nfs3_proc_rmdir,
 792         .readdir        = nfs3_proc_readdir,
 793         .mknod          = nfs3_proc_mknod,
 794         .statfs         = nfs3_proc_statfs,
 795         .fsinfo         = nfs3_proc_fsinfo,
 796         .pathconf       = nfs3_proc_pathconf,
 797         .decode_dirent  = nfs3_decode_dirent,
 798         .read_setup     = nfs3_proc_read_setup,
 799         .read_done      = nfs3_read_done,
 800         .write_setup    = nfs3_proc_write_setup,
 801         .write_done     = nfs3_write_done,
 802         .commit_setup   = nfs3_proc_commit_setup,
 803         .commit_done    = nfs3_commit_done,
 804         .file_open      = nfs_open,
 805         .file_release   = nfs_release,
 806         .lock           = nfs3_proc_lock,
 807         .clear_acl_cache = nfs3_forget_cached_acls,
 808 };