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