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/smp_lock.h> 20 #include <linux/nfs_mount.h> 21 22 #define NFSDBG_FACILITY NFSDBG_PROC 23 24 extern struct rpc_procinfo nfs3_procedures[]; 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 sigset_t oldset; 31 int res; 32 rpc_clnt_sigmask(clnt, &oldset); 33 do { 34 res = rpc_call_sync(clnt, msg, flags); 35 if (res != -EJUKEBOX) 36 break; 37 set_current_state(TASK_INTERRUPTIBLE); 38 schedule_timeout(NFS_JUKEBOX_RETRY_TIME); 39 res = -ERESTARTSYS; 40 } while (!signalled()); 41 rpc_clnt_sigunmask(clnt, &oldset); 42 return res; 43 } 44 45 static inline int 46 nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags) 47 { 48 struct rpc_message msg = { 49 .rpc_proc = &clnt->cl_procinfo[proc], 50 .rpc_argp = argp, 51 .rpc_resp = resp, 52 }; 53 return nfs3_rpc_wrapper(clnt, &msg, flags); 54 } 55 56 #define rpc_call(clnt, proc, argp, resp, flags) \ 57 nfs3_rpc_call_wrapper(clnt, proc, argp, resp, flags) 58 #define rpc_call_sync(clnt, msg, flags) \ 59 nfs3_rpc_wrapper(clnt, msg, flags) 60 61 static int 62 nfs3_async_handle_jukebox(struct rpc_task *task) 63 { 64 if (task->tk_status != -EJUKEBOX) 65 return 0; 66 task->tk_status = 0; 67 rpc_restart_call(task); 68 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); 69 return 1; 70 } 71 72 /* 73 * Bare-bones access to getattr: this is for nfs_read_super. 74 */ 75 static int 76 nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, 77 struct nfs_fsinfo *info) 78 { 79 int status; 80 81 dprintk("%s: call fsinfo\n", __FUNCTION__); 82 info->fattr->valid = 0; 83 status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); 84 dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); 85 if (!(info->fattr->valid & NFS_ATTR_FATTR)) { 86 status = rpc_call(server->client_sys, NFS3PROC_GETATTR, fhandle, info->fattr, 0); 87 dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); 88 } 89 return status; 90 } 91 92 /* 93 * One function for each procedure in the NFS protocol. 94 */ 95 static int 96 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, 97 struct nfs_fattr *fattr) 98 { 99 int status; 100 101 dprintk("NFS call getattr\n"); 102 fattr->valid = 0; 103 status = rpc_call(server->client, NFS3PROC_GETATTR, 104 fhandle, fattr, 0); 105 dprintk("NFS reply getattr: %d\n", status); 106 return status; 107 } 108 109 static int 110 nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, 111 struct iattr *sattr) 112 { 113 struct inode *inode = dentry->d_inode; 114 struct nfs3_sattrargs arg = { 115 .fh = NFS_FH(inode), 116 .sattr = sattr, 117 }; 118 int status; 119 120 dprintk("NFS call setattr\n"); 121 fattr->valid = 0; 122 status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0); 123 if (status == 0) 124 nfs_setattr_update_inode(inode, sattr); 125 dprintk("NFS reply setattr: %d\n", status); 126 return status; 127 } 128 129 static int 130 nfs3_proc_lookup(struct inode *dir, struct qstr *name, 131 struct nfs_fh *fhandle, struct nfs_fattr *fattr) 132 { 133 struct nfs_fattr dir_attr; 134 struct nfs3_diropargs arg = { 135 .fh = NFS_FH(dir), 136 .name = name->name, 137 .len = name->len 138 }; 139 struct nfs3_diropres res = { 140 .dir_attr = &dir_attr, 141 .fh = fhandle, 142 .fattr = fattr 143 }; 144 int status; 145 146 dprintk("NFS call lookup %s\n", name->name); 147 dir_attr.valid = 0; 148 fattr->valid = 0; 149 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0); 150 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) 151 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR, 152 fhandle, fattr, 0); 153 dprintk("NFS reply lookup: %d\n", status); 154 if (status >= 0) 155 status = nfs_refresh_inode(dir, &dir_attr); 156 return status; 157 } 158 159 static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) 160 { 161 struct nfs_fattr fattr; 162 struct nfs3_accessargs arg = { 163 .fh = NFS_FH(inode), 164 }; 165 struct nfs3_accessres res = { 166 .fattr = &fattr, 167 }; 168 struct rpc_message msg = { 169 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], 170 .rpc_argp = &arg, 171 .rpc_resp = &res, 172 .rpc_cred = entry->cred 173 }; 174 int mode = entry->mask; 175 int status; 176 177 dprintk("NFS call access\n"); 178 fattr.valid = 0; 179 180 if (mode & MAY_READ) 181 arg.access |= NFS3_ACCESS_READ; 182 if (S_ISDIR(inode->i_mode)) { 183 if (mode & MAY_WRITE) 184 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; 185 if (mode & MAY_EXEC) 186 arg.access |= NFS3_ACCESS_LOOKUP; 187 } else { 188 if (mode & MAY_WRITE) 189 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; 190 if (mode & MAY_EXEC) 191 arg.access |= NFS3_ACCESS_EXECUTE; 192 } 193 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 194 nfs_refresh_inode(inode, &fattr); 195 if (status == 0) { 196 entry->mask = 0; 197 if (res.access & NFS3_ACCESS_READ) 198 entry->mask |= MAY_READ; 199 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) 200 entry->mask |= MAY_WRITE; 201 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) 202 entry->mask |= MAY_EXEC; 203 } 204 dprintk("NFS reply access: %d\n", status); 205 return status; 206 } 207 208 static int nfs3_proc_readlink(struct inode *inode, struct page *page, 209 unsigned int pgbase, unsigned int pglen) 210 { 211 struct nfs_fattr fattr; 212 struct nfs3_readlinkargs args = { 213 .fh = NFS_FH(inode), 214 .pgbase = pgbase, 215 .pglen = pglen, 216 .pages = &page 217 }; 218 int status; 219 220 dprintk("NFS call readlink\n"); 221 fattr.valid = 0; 222 status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK, 223 &args, &fattr, 0); 224 nfs_refresh_inode(inode, &fattr); 225 dprintk("NFS reply readlink: %d\n", status); 226 return status; 227 } 228 229 static int nfs3_proc_read(struct nfs_read_data *rdata) 230 { 231 int flags = rdata->flags; 232 struct inode * inode = rdata->inode; 233 struct nfs_fattr * fattr = rdata->res.fattr; 234 struct rpc_message msg = { 235 .rpc_proc = &nfs3_procedures[NFS3PROC_READ], 236 .rpc_argp = &rdata->args, 237 .rpc_resp = &rdata->res, 238 .rpc_cred = rdata->cred, 239 }; 240 int status; 241 242 dprintk("NFS call read %d @ %Ld\n", rdata->args.count, 243 (long long) rdata->args.offset); 244 fattr->valid = 0; 245 status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); 246 if (status >= 0) 247 nfs_refresh_inode(inode, fattr); 248 dprintk("NFS reply read: %d\n", status); 249 return status; 250 } 251 252 static int nfs3_proc_write(struct nfs_write_data *wdata) 253 { 254 int rpcflags = wdata->flags; 255 struct inode * inode = wdata->inode; 256 struct nfs_fattr * fattr = wdata->res.fattr; 257 struct rpc_message msg = { 258 .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], 259 .rpc_argp = &wdata->args, 260 .rpc_resp = &wdata->res, 261 .rpc_cred = wdata->cred, 262 }; 263 int status; 264 265 dprintk("NFS call write %d @ %Ld\n", wdata->args.count, 266 (long long) wdata->args.offset); 267 fattr->valid = 0; 268 status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags); 269 if (status >= 0) 270 nfs_refresh_inode(inode, fattr); 271 dprintk("NFS reply write: %d\n", status); 272 return status < 0? status : wdata->res.count; 273 } 274 275 static int nfs3_proc_commit(struct nfs_write_data *cdata) 276 { 277 struct inode * inode = cdata->inode; 278 struct nfs_fattr * fattr = cdata->res.fattr; 279 struct rpc_message msg = { 280 .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], 281 .rpc_argp = &cdata->args, 282 .rpc_resp = &cdata->res, 283 .rpc_cred = cdata->cred, 284 }; 285 int status; 286 287 dprintk("NFS call commit %d @ %Ld\n", cdata->args.count, 288 (long long) cdata->args.offset); 289 fattr->valid = 0; 290 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 291 if (status >= 0) 292 nfs_refresh_inode(inode, fattr); 293 dprintk("NFS reply commit: %d\n", status); 294 return status; 295 } 296 297 /* 298 * Create a regular file. 299 * For now, we don't implement O_EXCL. 300 */ 301 static int 302 nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 303 int flags) 304 { 305 struct nfs_fh fhandle; 306 struct nfs_fattr fattr; 307 struct nfs_fattr dir_attr; 308 struct nfs3_createargs arg = { 309 .fh = NFS_FH(dir), 310 .name = dentry->d_name.name, 311 .len = dentry->d_name.len, 312 .sattr = sattr, 313 }; 314 struct nfs3_diropres res = { 315 .dir_attr = &dir_attr, 316 .fh = &fhandle, 317 .fattr = &fattr 318 }; 319 mode_t mode = sattr->ia_mode; 320 int status; 321 322 dprintk("NFS call create %s\n", dentry->d_name.name); 323 arg.createmode = NFS3_CREATE_UNCHECKED; 324 if (flags & O_EXCL) { 325 arg.createmode = NFS3_CREATE_EXCLUSIVE; 326 arg.verifier[0] = jiffies; 327 arg.verifier[1] = current->pid; 328 } 329 330 sattr->ia_mode &= ~current->fs->umask; 331 332 again: 333 dir_attr.valid = 0; 334 fattr.valid = 0; 335 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0); 336 nfs_refresh_inode(dir, &dir_attr); 337 338 /* If the server doesn't support the exclusive creation semantics, 339 * try again with simple 'guarded' mode. */ 340 if (status == NFSERR_NOTSUPP) { 341 switch (arg.createmode) { 342 case NFS3_CREATE_EXCLUSIVE: 343 arg.createmode = NFS3_CREATE_GUARDED; 344 break; 345 346 case NFS3_CREATE_GUARDED: 347 arg.createmode = NFS3_CREATE_UNCHECKED; 348 break; 349 350 case NFS3_CREATE_UNCHECKED: 351 goto out; 352 } 353 goto again; 354 } 355 356 if (status == 0) 357 status = nfs_instantiate(dentry, &fhandle, &fattr); 358 if (status != 0) 359 goto out; 360 361 /* When we created the file with exclusive semantics, make 362 * sure we set the attributes afterwards. */ 363 if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { 364 dprintk("NFS call setattr (post-create)\n"); 365 366 if (!(sattr->ia_valid & ATTR_ATIME_SET)) 367 sattr->ia_valid |= ATTR_ATIME; 368 if (!(sattr->ia_valid & ATTR_MTIME_SET)) 369 sattr->ia_valid |= ATTR_MTIME; 370 371 /* Note: we could use a guarded setattr here, but I'm 372 * not sure this buys us anything (and I'd have 373 * to revamp the NFSv3 XDR code) */ 374 status = nfs3_proc_setattr(dentry, &fattr, sattr); 375 if (status == 0) 376 nfs_setattr_update_inode(dentry->d_inode, sattr); 377 nfs_refresh_inode(dentry->d_inode, &fattr); 378 dprintk("NFS reply setattr (post-create): %d\n", status); 379 } 380 if (status != 0) 381 goto out; 382 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); 383 out: 384 dprintk("NFS reply create: %d\n", status); 385 return status; 386 } 387 388 static int 389 nfs3_proc_remove(struct inode *dir, struct qstr *name) 390 { 391 struct nfs_fattr dir_attr; 392 struct nfs3_diropargs arg = { 393 .fh = NFS_FH(dir), 394 .name = name->name, 395 .len = name->len 396 }; 397 struct rpc_message msg = { 398 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], 399 .rpc_argp = &arg, 400 .rpc_resp = &dir_attr, 401 }; 402 int status; 403 404 dprintk("NFS call remove %s\n", name->name); 405 dir_attr.valid = 0; 406 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 407 nfs_refresh_inode(dir, &dir_attr); 408 dprintk("NFS reply remove: %d\n", status); 409 return status; 410 } 411 412 static int 413 nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) 414 { 415 struct unlinkxdr { 416 struct nfs3_diropargs arg; 417 struct nfs_fattr res; 418 } *ptr; 419 420 ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL); 421 if (!ptr) 422 return -ENOMEM; 423 ptr->arg.fh = NFS_FH(dir->d_inode); 424 ptr->arg.name = name->name; 425 ptr->arg.len = name->len; 426 ptr->res.valid = 0; 427 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; 428 msg->rpc_argp = &ptr->arg; 429 msg->rpc_resp = &ptr->res; 430 return 0; 431 } 432 433 static int 434 nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task) 435 { 436 struct rpc_message *msg = &task->tk_msg; 437 struct nfs_fattr *dir_attr; 438 439 if (nfs3_async_handle_jukebox(task)) 440 return 1; 441 if (msg->rpc_argp) { 442 dir_attr = (struct nfs_fattr*)msg->rpc_resp; 443 nfs_refresh_inode(dir->d_inode, dir_attr); 444 kfree(msg->rpc_argp); 445 } 446 return 0; 447 } 448 449 static int 450 nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, 451 struct inode *new_dir, struct qstr *new_name) 452 { 453 struct nfs_fattr old_dir_attr, new_dir_attr; 454 struct nfs3_renameargs arg = { 455 .fromfh = NFS_FH(old_dir), 456 .fromname = old_name->name, 457 .fromlen = old_name->len, 458 .tofh = NFS_FH(new_dir), 459 .toname = new_name->name, 460 .tolen = new_name->len 461 }; 462 struct nfs3_renameres res = { 463 .fromattr = &old_dir_attr, 464 .toattr = &new_dir_attr 465 }; 466 int status; 467 468 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); 469 old_dir_attr.valid = 0; 470 new_dir_attr.valid = 0; 471 status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0); 472 nfs_refresh_inode(old_dir, &old_dir_attr); 473 nfs_refresh_inode(new_dir, &new_dir_attr); 474 dprintk("NFS reply rename: %d\n", status); 475 return status; 476 } 477 478 static int 479 nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) 480 { 481 struct nfs_fattr dir_attr, fattr; 482 struct nfs3_linkargs arg = { 483 .fromfh = NFS_FH(inode), 484 .tofh = NFS_FH(dir), 485 .toname = name->name, 486 .tolen = name->len 487 }; 488 struct nfs3_linkres res = { 489 .dir_attr = &dir_attr, 490 .fattr = &fattr 491 }; 492 int status; 493 494 dprintk("NFS call link %s\n", name->name); 495 dir_attr.valid = 0; 496 fattr.valid = 0; 497 status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0); 498 nfs_refresh_inode(dir, &dir_attr); 499 nfs_refresh_inode(inode, &fattr); 500 dprintk("NFS reply link: %d\n", status); 501 return status; 502 } 503 504 static int 505 nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, 506 struct iattr *sattr, struct nfs_fh *fhandle, 507 struct nfs_fattr *fattr) 508 { 509 struct nfs_fattr dir_attr; 510 struct nfs3_symlinkargs arg = { 511 .fromfh = NFS_FH(dir), 512 .fromname = name->name, 513 .fromlen = name->len, 514 .topath = path->name, 515 .tolen = path->len, 516 .sattr = sattr 517 }; 518 struct nfs3_diropres res = { 519 .dir_attr = &dir_attr, 520 .fh = fhandle, 521 .fattr = fattr 522 }; 523 int status; 524 525 if (path->len > NFS3_MAXPATHLEN) 526 return -ENAMETOOLONG; 527 dprintk("NFS call symlink %s -> %s\n", name->name, path->name); 528 dir_attr.valid = 0; 529 fattr->valid = 0; 530 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0); 531 nfs_refresh_inode(dir, &dir_attr); 532 dprintk("NFS reply symlink: %d\n", status); 533 return status; 534 } 535 536 static int 537 nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) 538 { 539 struct nfs_fh fhandle; 540 struct nfs_fattr fattr, dir_attr; 541 struct nfs3_mkdirargs arg = { 542 .fh = NFS_FH(dir), 543 .name = dentry->d_name.name, 544 .len = dentry->d_name.len, 545 .sattr = sattr 546 }; 547 struct nfs3_diropres res = { 548 .dir_attr = &dir_attr, 549 .fh = &fhandle, 550 .fattr = &fattr 551 }; 552 int mode = sattr->ia_mode; 553 int status; 554 555 dprintk("NFS call mkdir %s\n", dentry->d_name.name); 556 dir_attr.valid = 0; 557 fattr.valid = 0; 558 559 sattr->ia_mode &= ~current->fs->umask; 560 561 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0); 562 nfs_refresh_inode(dir, &dir_attr); 563 if (status != 0) 564 goto out; 565 status = nfs_instantiate(dentry, &fhandle, &fattr); 566 if (status != 0) 567 goto out; 568 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); 569 out: 570 dprintk("NFS reply mkdir: %d\n", status); 571 return status; 572 } 573 574 static int 575 nfs3_proc_rmdir(struct inode *dir, struct qstr *name) 576 { 577 struct nfs_fattr dir_attr; 578 struct nfs3_diropargs arg = { 579 .fh = NFS_FH(dir), 580 .name = name->name, 581 .len = name->len 582 }; 583 int status; 584 585 dprintk("NFS call rmdir %s\n", name->name); 586 dir_attr.valid = 0; 587 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0); 588 nfs_refresh_inode(dir, &dir_attr); 589 dprintk("NFS reply rmdir: %d\n", status); 590 return status; 591 } 592 593 /* 594 * The READDIR implementation is somewhat hackish - we pass the user buffer 595 * to the encode function, which installs it in the receive iovec. 596 * The decode function itself doesn't perform any decoding, it just makes 597 * sure the reply is syntactically correct. 598 * 599 * Also note that this implementation handles both plain readdir and 600 * readdirplus. 601 */ 602 static int 603 nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, 604 u64 cookie, struct page *page, unsigned int count, int plus) 605 { 606 struct inode *dir = dentry->d_inode; 607 struct nfs_fattr dir_attr; 608 u32 *verf = NFS_COOKIEVERF(dir); 609 struct nfs3_readdirargs arg = { 610 .fh = NFS_FH(dir), 611 .cookie = cookie, 612 .verf = {verf[0], verf[1]}, 613 .plus = plus, 614 .count = count, 615 .pages = &page 616 }; 617 struct nfs3_readdirres res = { 618 .dir_attr = &dir_attr, 619 .verf = verf, 620 .plus = plus 621 }; 622 struct rpc_message msg = { 623 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], 624 .rpc_argp = &arg, 625 .rpc_resp = &res, 626 .rpc_cred = cred 627 }; 628 int status; 629 630 lock_kernel(); 631 632 if (plus) 633 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; 634 635 dprintk("NFS call readdir%s %d\n", 636 plus? "plus" : "", (unsigned int) cookie); 637 638 dir_attr.valid = 0; 639 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 640 nfs_refresh_inode(dir, &dir_attr); 641 dprintk("NFS reply readdir: %d\n", status); 642 unlock_kernel(); 643 return status; 644 } 645 646 static int 647 nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 648 dev_t rdev) 649 { 650 struct nfs_fh fh; 651 struct nfs_fattr fattr, dir_attr; 652 struct nfs3_mknodargs arg = { 653 .fh = NFS_FH(dir), 654 .name = dentry->d_name.name, 655 .len = dentry->d_name.len, 656 .sattr = sattr, 657 .rdev = rdev 658 }; 659 struct nfs3_diropres res = { 660 .dir_attr = &dir_attr, 661 .fh = &fh, 662 .fattr = &fattr 663 }; 664 mode_t mode = sattr->ia_mode; 665 int status; 666 667 switch (sattr->ia_mode & S_IFMT) { 668 case S_IFBLK: arg.type = NF3BLK; break; 669 case S_IFCHR: arg.type = NF3CHR; break; 670 case S_IFIFO: arg.type = NF3FIFO; break; 671 case S_IFSOCK: arg.type = NF3SOCK; break; 672 default: return -EINVAL; 673 } 674 675 dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, 676 MAJOR(rdev), MINOR(rdev)); 677 678 sattr->ia_mode &= ~current->fs->umask; 679 680 dir_attr.valid = 0; 681 fattr.valid = 0; 682 status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0); 683 nfs_refresh_inode(dir, &dir_attr); 684 if (status != 0) 685 goto out; 686 status = nfs_instantiate(dentry, &fh, &fattr); 687 if (status != 0) 688 goto out; 689 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); 690 out: 691 dprintk("NFS reply mknod: %d\n", status); 692 return status; 693 } 694 695 static int 696 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, 697 struct nfs_fsstat *stat) 698 { 699 int status; 700 701 dprintk("NFS call fsstat\n"); 702 stat->fattr->valid = 0; 703 status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0); 704 dprintk("NFS reply statfs: %d\n", status); 705 return status; 706 } 707 708 static int 709 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, 710 struct nfs_fsinfo *info) 711 { 712 int status; 713 714 dprintk("NFS call fsinfo\n"); 715 info->fattr->valid = 0; 716 status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); 717 dprintk("NFS reply fsinfo: %d\n", status); 718 return status; 719 } 720 721 static int 722 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, 723 struct nfs_pathconf *info) 724 { 725 int status; 726 727 dprintk("NFS call pathconf\n"); 728 info->fattr->valid = 0; 729 status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0); 730 dprintk("NFS reply pathconf: %d\n", status); 731 return status; 732 } 733 734 extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int); 735 736 static void 737 nfs3_read_done(struct rpc_task *task) 738 { 739 struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; 740 741 if (nfs3_async_handle_jukebox(task)) 742 return; 743 /* Call back common NFS readpage processing */ 744 if (task->tk_status >= 0) 745 nfs_refresh_inode(data->inode, &data->fattr); 746 nfs_readpage_result(task); 747 } 748 749 static void 750 nfs3_proc_read_setup(struct nfs_read_data *data) 751 { 752 struct rpc_task *task = &data->task; 753 struct inode *inode = data->inode; 754 int flags; 755 struct rpc_message msg = { 756 .rpc_proc = &nfs3_procedures[NFS3PROC_READ], 757 .rpc_argp = &data->args, 758 .rpc_resp = &data->res, 759 .rpc_cred = data->cred, 760 }; 761 762 /* N.B. Do we need to test? Never called for swapfile inode */ 763 flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); 764 765 /* Finalize the task. */ 766 rpc_init_task(task, NFS_CLIENT(inode), nfs3_read_done, flags); 767 rpc_call_setup(task, &msg, 0); 768 } 769 770 static void 771 nfs3_write_done(struct rpc_task *task) 772 { 773 struct nfs_write_data *data; 774 775 if (nfs3_async_handle_jukebox(task)) 776 return; 777 data = (struct nfs_write_data *)task->tk_calldata; 778 if (task->tk_status >= 0) 779 nfs_refresh_inode(data->inode, data->res.fattr); 780 nfs_writeback_done(task); 781 } 782 783 static void 784 nfs3_proc_write_setup(struct nfs_write_data *data, int how) 785 { 786 struct rpc_task *task = &data->task; 787 struct inode *inode = data->inode; 788 int stable; 789 int flags; 790 struct rpc_message msg = { 791 .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], 792 .rpc_argp = &data->args, 793 .rpc_resp = &data->res, 794 .rpc_cred = data->cred, 795 }; 796 797 if (how & FLUSH_STABLE) { 798 if (!NFS_I(inode)->ncommit) 799 stable = NFS_FILE_SYNC; 800 else 801 stable = NFS_DATA_SYNC; 802 } else 803 stable = NFS_UNSTABLE; 804 data->args.stable = stable; 805 806 /* Set the initial flags for the task. */ 807 flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; 808 809 /* Finalize the task. */ 810 rpc_init_task(task, NFS_CLIENT(inode), nfs3_write_done, flags); 811 rpc_call_setup(task, &msg, 0); 812 } 813 814 static void 815 nfs3_commit_done(struct rpc_task *task) 816 { 817 struct nfs_write_data *data; 818 819 if (nfs3_async_handle_jukebox(task)) 820 return; 821 data = (struct nfs_write_data *)task->tk_calldata; 822 if (task->tk_status >= 0) 823 nfs_refresh_inode(data->inode, data->res.fattr); 824 nfs_commit_done(task); 825 } 826 827 static void 828 nfs3_proc_commit_setup(struct nfs_write_data *data, int how) 829 { 830 struct rpc_task *task = &data->task; 831 struct inode *inode = data->inode; 832 int flags; 833 struct rpc_message msg = { 834 .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], 835 .rpc_argp = &data->args, 836 .rpc_resp = &data->res, 837 .rpc_cred = data->cred, 838 }; 839 840 /* Set the initial flags for the task. */ 841 flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; 842 843 /* Finalize the task. */ 844 rpc_init_task(task, NFS_CLIENT(inode), nfs3_commit_done, flags); 845 rpc_call_setup(task, &msg, 0); 846 } 847 848 static int 849 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) 850 { 851 return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); 852 } 853 854 struct nfs_rpc_ops nfs_v3_clientops = { 855 .version = 3, /* protocol version */ 856 .dentry_ops = &nfs_dentry_operations, 857 .dir_inode_ops = &nfs3_dir_inode_operations, 858 .file_inode_ops = &nfs3_file_inode_operations, 859 .getroot = nfs3_proc_get_root, 860 .getattr = nfs3_proc_getattr, 861 .setattr = nfs3_proc_setattr, 862 .lookup = nfs3_proc_lookup, 863 .access = nfs3_proc_access, 864 .readlink = nfs3_proc_readlink, 865 .read = nfs3_proc_read, 866 .write = nfs3_proc_write, 867 .commit = nfs3_proc_commit, 868 .create = nfs3_proc_create, 869 .remove = nfs3_proc_remove, 870 .unlink_setup = nfs3_proc_unlink_setup, 871 .unlink_done = nfs3_proc_unlink_done, 872 .rename = nfs3_proc_rename, 873 .link = nfs3_proc_link, 874 .symlink = nfs3_proc_symlink, 875 .mkdir = nfs3_proc_mkdir, 876 .rmdir = nfs3_proc_rmdir, 877 .readdir = nfs3_proc_readdir, 878 .mknod = nfs3_proc_mknod, 879 .statfs = nfs3_proc_statfs, 880 .fsinfo = nfs3_proc_fsinfo, 881 .pathconf = nfs3_proc_pathconf, 882 .decode_dirent = nfs3_decode_dirent, 883 .read_setup = nfs3_proc_read_setup, 884 .write_setup = nfs3_proc_write_setup, 885 .commit_setup = nfs3_proc_commit_setup, 886 .file_open = nfs_open, 887 .file_release = nfs_release, 888 .lock = nfs3_proc_lock, 889 .clear_acl_cache = nfs3_forget_cached_acls, 890 }; 891