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 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 schedule_timeout_interruptible(NFS_JUKEBOX_RETRY_TIME); 38 res = -ERESTARTSYS; 39 } while (!signalled()); 40 rpc_clnt_sigunmask(clnt, &oldset); 41 return res; 42 } 43 44 #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags) 45 46 static int 47 nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode) 48 { 49 if (task->tk_status != -EJUKEBOX) 50 return 0; 51 nfs_inc_stats(inode, NFSIOS_DELAY); 52 task->tk_status = 0; 53 rpc_restart_call(task); 54 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); 55 return 1; 56 } 57 58 static int 59 do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, 60 struct nfs_fsinfo *info) 61 { 62 struct rpc_message msg = { 63 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], 64 .rpc_argp = fhandle, 65 .rpc_resp = info, 66 }; 67 int status; 68 69 dprintk("%s: call fsinfo\n", __FUNCTION__); 70 nfs_fattr_init(info->fattr); 71 status = rpc_call_sync(client, &msg, 0); 72 dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); 73 if (!(info->fattr->valid & NFS_ATTR_FATTR)) { 74 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; 75 msg.rpc_resp = info->fattr; 76 status = rpc_call_sync(client, &msg, 0); 77 dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); 78 } 79 return status; 80 } 81 82 /* 83 * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb 84 */ 85 static int 86 nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, 87 struct nfs_fsinfo *info) 88 { 89 int status; 90 91 status = do_proc_get_root(server->client, fhandle, info); 92 if (status && server->nfs_client->cl_rpcclient != server->client) 93 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info); 94 return status; 95 } 96 97 /* 98 * One function for each procedure in the NFS protocol. 99 */ 100 static int 101 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, 102 struct nfs_fattr *fattr) 103 { 104 struct rpc_message msg = { 105 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], 106 .rpc_argp = fhandle, 107 .rpc_resp = fattr, 108 }; 109 int status; 110 111 dprintk("NFS call getattr\n"); 112 nfs_fattr_init(fattr); 113 status = rpc_call_sync(server->client, &msg, 0); 114 dprintk("NFS reply getattr: %d\n", status); 115 return status; 116 } 117 118 static int 119 nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, 120 struct iattr *sattr) 121 { 122 struct inode *inode = dentry->d_inode; 123 struct nfs3_sattrargs arg = { 124 .fh = NFS_FH(inode), 125 .sattr = sattr, 126 }; 127 struct rpc_message msg = { 128 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR], 129 .rpc_argp = &arg, 130 .rpc_resp = fattr, 131 }; 132 int status; 133 134 dprintk("NFS call setattr\n"); 135 nfs_fattr_init(fattr); 136 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 137 if (status == 0) 138 nfs_setattr_update_inode(inode, sattr); 139 dprintk("NFS reply setattr: %d\n", status); 140 return status; 141 } 142 143 static int 144 nfs3_proc_lookup(struct inode *dir, struct qstr *name, 145 struct nfs_fh *fhandle, struct nfs_fattr *fattr) 146 { 147 struct nfs_fattr dir_attr; 148 struct nfs3_diropargs arg = { 149 .fh = NFS_FH(dir), 150 .name = name->name, 151 .len = name->len 152 }; 153 struct nfs3_diropres res = { 154 .dir_attr = &dir_attr, 155 .fh = fhandle, 156 .fattr = fattr 157 }; 158 struct rpc_message msg = { 159 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP], 160 .rpc_argp = &arg, 161 .rpc_resp = &res, 162 }; 163 int status; 164 165 dprintk("NFS call lookup %s\n", name->name); 166 nfs_fattr_init(&dir_attr); 167 nfs_fattr_init(fattr); 168 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 169 nfs_refresh_inode(dir, &dir_attr); 170 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) { 171 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; 172 msg.rpc_argp = fhandle; 173 msg.rpc_resp = fattr; 174 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 175 } 176 dprintk("NFS reply lookup: %d\n", status); 177 return status; 178 } 179 180 static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) 181 { 182 struct nfs_fattr fattr; 183 struct nfs3_accessargs arg = { 184 .fh = NFS_FH(inode), 185 }; 186 struct nfs3_accessres res = { 187 .fattr = &fattr, 188 }; 189 struct rpc_message msg = { 190 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], 191 .rpc_argp = &arg, 192 .rpc_resp = &res, 193 .rpc_cred = entry->cred, 194 }; 195 int mode = entry->mask; 196 int status; 197 198 dprintk("NFS call access\n"); 199 200 if (mode & MAY_READ) 201 arg.access |= NFS3_ACCESS_READ; 202 if (S_ISDIR(inode->i_mode)) { 203 if (mode & MAY_WRITE) 204 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; 205 if (mode & MAY_EXEC) 206 arg.access |= NFS3_ACCESS_LOOKUP; 207 } else { 208 if (mode & MAY_WRITE) 209 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; 210 if (mode & MAY_EXEC) 211 arg.access |= NFS3_ACCESS_EXECUTE; 212 } 213 nfs_fattr_init(&fattr); 214 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 215 nfs_refresh_inode(inode, &fattr); 216 if (status == 0) { 217 entry->mask = 0; 218 if (res.access & NFS3_ACCESS_READ) 219 entry->mask |= MAY_READ; 220 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) 221 entry->mask |= MAY_WRITE; 222 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) 223 entry->mask |= MAY_EXEC; 224 } 225 dprintk("NFS reply access: %d\n", status); 226 return status; 227 } 228 229 static int nfs3_proc_readlink(struct inode *inode, struct page *page, 230 unsigned int pgbase, unsigned int pglen) 231 { 232 struct nfs_fattr fattr; 233 struct nfs3_readlinkargs args = { 234 .fh = NFS_FH(inode), 235 .pgbase = pgbase, 236 .pglen = pglen, 237 .pages = &page 238 }; 239 struct rpc_message msg = { 240 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK], 241 .rpc_argp = &args, 242 .rpc_resp = &fattr, 243 }; 244 int status; 245 246 dprintk("NFS call readlink\n"); 247 nfs_fattr_init(&fattr); 248 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 249 nfs_refresh_inode(inode, &fattr); 250 dprintk("NFS reply readlink: %d\n", status); 251 return status; 252 } 253 254 /* 255 * Create a regular file. 256 * For now, we don't implement O_EXCL. 257 */ 258 static int 259 nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 260 int flags, struct nameidata *nd) 261 { 262 struct nfs_fh fhandle; 263 struct nfs_fattr fattr; 264 struct nfs_fattr dir_attr; 265 struct nfs3_createargs arg = { 266 .fh = NFS_FH(dir), 267 .name = dentry->d_name.name, 268 .len = dentry->d_name.len, 269 .sattr = sattr, 270 }; 271 struct nfs3_diropres res = { 272 .dir_attr = &dir_attr, 273 .fh = &fhandle, 274 .fattr = &fattr 275 }; 276 struct rpc_message msg = { 277 .rpc_proc = &nfs3_procedures[NFS3PROC_CREATE], 278 .rpc_argp = &arg, 279 .rpc_resp = &res, 280 }; 281 mode_t mode = sattr->ia_mode; 282 int status; 283 284 dprintk("NFS call create %s\n", dentry->d_name.name); 285 arg.createmode = NFS3_CREATE_UNCHECKED; 286 if (flags & O_EXCL) { 287 arg.createmode = NFS3_CREATE_EXCLUSIVE; 288 arg.verifier[0] = jiffies; 289 arg.verifier[1] = current->pid; 290 } 291 292 sattr->ia_mode &= ~current->fs->umask; 293 294 again: 295 nfs_fattr_init(&dir_attr); 296 nfs_fattr_init(&fattr); 297 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 298 nfs_refresh_inode(dir, &dir_attr); 299 300 /* If the server doesn't support the exclusive creation semantics, 301 * try again with simple 'guarded' mode. */ 302 if (status == -ENOTSUPP) { 303 switch (arg.createmode) { 304 case NFS3_CREATE_EXCLUSIVE: 305 arg.createmode = NFS3_CREATE_GUARDED; 306 break; 307 308 case NFS3_CREATE_GUARDED: 309 arg.createmode = NFS3_CREATE_UNCHECKED; 310 break; 311 312 case NFS3_CREATE_UNCHECKED: 313 goto out; 314 } 315 goto again; 316 } 317 318 if (status == 0) 319 status = nfs_instantiate(dentry, &fhandle, &fattr); 320 if (status != 0) 321 goto out; 322 323 /* When we created the file with exclusive semantics, make 324 * sure we set the attributes afterwards. */ 325 if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { 326 dprintk("NFS call setattr (post-create)\n"); 327 328 if (!(sattr->ia_valid & ATTR_ATIME_SET)) 329 sattr->ia_valid |= ATTR_ATIME; 330 if (!(sattr->ia_valid & ATTR_MTIME_SET)) 331 sattr->ia_valid |= ATTR_MTIME; 332 333 /* Note: we could use a guarded setattr here, but I'm 334 * not sure this buys us anything (and I'd have 335 * to revamp the NFSv3 XDR code) */ 336 status = nfs3_proc_setattr(dentry, &fattr, sattr); 337 nfs_post_op_update_inode(dentry->d_inode, &fattr); 338 dprintk("NFS reply setattr (post-create): %d\n", status); 339 } 340 if (status != 0) 341 goto out; 342 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); 343 out: 344 dprintk("NFS reply create: %d\n", status); 345 return status; 346 } 347 348 static int 349 nfs3_proc_remove(struct inode *dir, struct qstr *name) 350 { 351 struct nfs_removeargs arg = { 352 .fh = NFS_FH(dir), 353 .name.len = name->len, 354 .name.name = name->name, 355 }; 356 struct nfs_removeres res; 357 struct rpc_message msg = { 358 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], 359 .rpc_argp = &arg, 360 .rpc_resp = &res, 361 }; 362 int status; 363 364 dprintk("NFS call remove %s\n", name->name); 365 nfs_fattr_init(&res.dir_attr); 366 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 367 nfs_post_op_update_inode(dir, &res.dir_attr); 368 dprintk("NFS reply remove: %d\n", status); 369 return status; 370 } 371 372 static void 373 nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) 374 { 375 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; 376 } 377 378 static int 379 nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) 380 { 381 struct nfs_removeres *res; 382 if (nfs3_async_handle_jukebox(task, dir)) 383 return 0; 384 res = task->tk_msg.rpc_resp; 385 nfs_post_op_update_inode(dir, &res->dir_attr); 386 return 1; 387 } 388 389 static int 390 nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, 391 struct inode *new_dir, struct qstr *new_name) 392 { 393 struct nfs_fattr old_dir_attr, new_dir_attr; 394 struct nfs3_renameargs arg = { 395 .fromfh = NFS_FH(old_dir), 396 .fromname = old_name->name, 397 .fromlen = old_name->len, 398 .tofh = NFS_FH(new_dir), 399 .toname = new_name->name, 400 .tolen = new_name->len 401 }; 402 struct nfs3_renameres res = { 403 .fromattr = &old_dir_attr, 404 .toattr = &new_dir_attr 405 }; 406 struct rpc_message msg = { 407 .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], 408 .rpc_argp = &arg, 409 .rpc_resp = &res, 410 }; 411 int status; 412 413 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); 414 nfs_fattr_init(&old_dir_attr); 415 nfs_fattr_init(&new_dir_attr); 416 status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); 417 nfs_post_op_update_inode(old_dir, &old_dir_attr); 418 nfs_post_op_update_inode(new_dir, &new_dir_attr); 419 dprintk("NFS reply rename: %d\n", status); 420 return status; 421 } 422 423 static int 424 nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) 425 { 426 struct nfs_fattr dir_attr, fattr; 427 struct nfs3_linkargs arg = { 428 .fromfh = NFS_FH(inode), 429 .tofh = NFS_FH(dir), 430 .toname = name->name, 431 .tolen = name->len 432 }; 433 struct nfs3_linkres res = { 434 .dir_attr = &dir_attr, 435 .fattr = &fattr 436 }; 437 struct rpc_message msg = { 438 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], 439 .rpc_argp = &arg, 440 .rpc_resp = &res, 441 }; 442 int status; 443 444 dprintk("NFS call link %s\n", name->name); 445 nfs_fattr_init(&dir_attr); 446 nfs_fattr_init(&fattr); 447 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 448 nfs_post_op_update_inode(dir, &dir_attr); 449 nfs_post_op_update_inode(inode, &fattr); 450 dprintk("NFS reply link: %d\n", status); 451 return status; 452 } 453 454 static int 455 nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, 456 unsigned int len, struct iattr *sattr) 457 { 458 struct nfs_fh fhandle; 459 struct nfs_fattr fattr, dir_attr; 460 struct nfs3_symlinkargs arg = { 461 .fromfh = NFS_FH(dir), 462 .fromname = dentry->d_name.name, 463 .fromlen = dentry->d_name.len, 464 .pages = &page, 465 .pathlen = len, 466 .sattr = sattr 467 }; 468 struct nfs3_diropres res = { 469 .dir_attr = &dir_attr, 470 .fh = &fhandle, 471 .fattr = &fattr 472 }; 473 struct rpc_message msg = { 474 .rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK], 475 .rpc_argp = &arg, 476 .rpc_resp = &res, 477 }; 478 int status; 479 480 if (len > NFS3_MAXPATHLEN) 481 return -ENAMETOOLONG; 482 483 dprintk("NFS call symlink %s\n", dentry->d_name.name); 484 485 nfs_fattr_init(&dir_attr); 486 nfs_fattr_init(&fattr); 487 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 488 nfs_post_op_update_inode(dir, &dir_attr); 489 if (status != 0) 490 goto out; 491 status = nfs_instantiate(dentry, &fhandle, &fattr); 492 out: 493 dprintk("NFS reply symlink: %d\n", status); 494 return status; 495 } 496 497 static int 498 nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) 499 { 500 struct nfs_fh fhandle; 501 struct nfs_fattr fattr, dir_attr; 502 struct nfs3_mkdirargs arg = { 503 .fh = NFS_FH(dir), 504 .name = dentry->d_name.name, 505 .len = dentry->d_name.len, 506 .sattr = sattr 507 }; 508 struct nfs3_diropres res = { 509 .dir_attr = &dir_attr, 510 .fh = &fhandle, 511 .fattr = &fattr 512 }; 513 struct rpc_message msg = { 514 .rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR], 515 .rpc_argp = &arg, 516 .rpc_resp = &res, 517 }; 518 int mode = sattr->ia_mode; 519 int status; 520 521 dprintk("NFS call mkdir %s\n", dentry->d_name.name); 522 523 sattr->ia_mode &= ~current->fs->umask; 524 525 nfs_fattr_init(&dir_attr); 526 nfs_fattr_init(&fattr); 527 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 528 nfs_post_op_update_inode(dir, &dir_attr); 529 if (status != 0) 530 goto out; 531 status = nfs_instantiate(dentry, &fhandle, &fattr); 532 if (status != 0) 533 goto out; 534 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); 535 out: 536 dprintk("NFS reply mkdir: %d\n", status); 537 return status; 538 } 539 540 static int 541 nfs3_proc_rmdir(struct inode *dir, struct qstr *name) 542 { 543 struct nfs_fattr dir_attr; 544 struct nfs3_diropargs arg = { 545 .fh = NFS_FH(dir), 546 .name = name->name, 547 .len = name->len 548 }; 549 struct rpc_message msg = { 550 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], 551 .rpc_argp = &arg, 552 .rpc_resp = &dir_attr, 553 }; 554 int status; 555 556 dprintk("NFS call rmdir %s\n", name->name); 557 nfs_fattr_init(&dir_attr); 558 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 559 nfs_post_op_update_inode(dir, &dir_attr); 560 dprintk("NFS reply rmdir: %d\n", status); 561 return status; 562 } 563 564 /* 565 * The READDIR implementation is somewhat hackish - we pass the user buffer 566 * to the encode function, which installs it in the receive iovec. 567 * The decode function itself doesn't perform any decoding, it just makes 568 * sure the reply is syntactically correct. 569 * 570 * Also note that this implementation handles both plain readdir and 571 * readdirplus. 572 */ 573 static int 574 nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, 575 u64 cookie, struct page *page, unsigned int count, int plus) 576 { 577 struct inode *dir = dentry->d_inode; 578 struct nfs_fattr dir_attr; 579 __be32 *verf = NFS_COOKIEVERF(dir); 580 struct nfs3_readdirargs arg = { 581 .fh = NFS_FH(dir), 582 .cookie = cookie, 583 .verf = {verf[0], verf[1]}, 584 .plus = plus, 585 .count = count, 586 .pages = &page 587 }; 588 struct nfs3_readdirres res = { 589 .dir_attr = &dir_attr, 590 .verf = verf, 591 .plus = plus 592 }; 593 struct rpc_message msg = { 594 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], 595 .rpc_argp = &arg, 596 .rpc_resp = &res, 597 .rpc_cred = cred 598 }; 599 int status; 600 601 if (plus) 602 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; 603 604 dprintk("NFS call readdir%s %d\n", 605 plus? "plus" : "", (unsigned int) cookie); 606 607 nfs_fattr_init(&dir_attr); 608 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 609 610 nfs_invalidate_atime(dir); 611 612 nfs_refresh_inode(dir, &dir_attr); 613 dprintk("NFS reply readdir: %d\n", status); 614 return status; 615 } 616 617 static int 618 nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 619 dev_t rdev) 620 { 621 struct nfs_fh fh; 622 struct nfs_fattr fattr, dir_attr; 623 struct nfs3_mknodargs arg = { 624 .fh = NFS_FH(dir), 625 .name = dentry->d_name.name, 626 .len = dentry->d_name.len, 627 .sattr = sattr, 628 .rdev = rdev 629 }; 630 struct nfs3_diropres res = { 631 .dir_attr = &dir_attr, 632 .fh = &fh, 633 .fattr = &fattr 634 }; 635 struct rpc_message msg = { 636 .rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD], 637 .rpc_argp = &arg, 638 .rpc_resp = &res, 639 }; 640 mode_t mode = sattr->ia_mode; 641 int status; 642 643 switch (sattr->ia_mode & S_IFMT) { 644 case S_IFBLK: arg.type = NF3BLK; break; 645 case S_IFCHR: arg.type = NF3CHR; break; 646 case S_IFIFO: arg.type = NF3FIFO; break; 647 case S_IFSOCK: arg.type = NF3SOCK; break; 648 default: return -EINVAL; 649 } 650 651 dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, 652 MAJOR(rdev), MINOR(rdev)); 653 654 sattr->ia_mode &= ~current->fs->umask; 655 656 nfs_fattr_init(&dir_attr); 657 nfs_fattr_init(&fattr); 658 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 659 nfs_post_op_update_inode(dir, &dir_attr); 660 if (status != 0) 661 goto out; 662 status = nfs_instantiate(dentry, &fh, &fattr); 663 if (status != 0) 664 goto out; 665 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); 666 out: 667 dprintk("NFS reply mknod: %d\n", status); 668 return status; 669 } 670 671 static int 672 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, 673 struct nfs_fsstat *stat) 674 { 675 struct rpc_message msg = { 676 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], 677 .rpc_argp = fhandle, 678 .rpc_resp = stat, 679 }; 680 int status; 681 682 dprintk("NFS call fsstat\n"); 683 nfs_fattr_init(stat->fattr); 684 status = rpc_call_sync(server->client, &msg, 0); 685 dprintk("NFS reply statfs: %d\n", status); 686 return status; 687 } 688 689 static int 690 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, 691 struct nfs_fsinfo *info) 692 { 693 struct rpc_message msg = { 694 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], 695 .rpc_argp = fhandle, 696 .rpc_resp = info, 697 }; 698 int status; 699 700 dprintk("NFS call fsinfo\n"); 701 nfs_fattr_init(info->fattr); 702 status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); 703 dprintk("NFS reply fsinfo: %d\n", status); 704 return status; 705 } 706 707 static int 708 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, 709 struct nfs_pathconf *info) 710 { 711 struct rpc_message msg = { 712 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], 713 .rpc_argp = fhandle, 714 .rpc_resp = info, 715 }; 716 int status; 717 718 dprintk("NFS call pathconf\n"); 719 nfs_fattr_init(info->fattr); 720 status = rpc_call_sync(server->client, &msg, 0); 721 dprintk("NFS reply pathconf: %d\n", status); 722 return status; 723 } 724 725 static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) 726 { 727 if (nfs3_async_handle_jukebox(task, data->inode)) 728 return -EAGAIN; 729 730 nfs_invalidate_atime(data->inode); 731 nfs_refresh_inode(data->inode, &data->fattr); 732 return 0; 733 } 734 735 static void nfs3_proc_read_setup(struct nfs_read_data *data) 736 { 737 struct rpc_message msg = { 738 .rpc_proc = &nfs3_procedures[NFS3PROC_READ], 739 .rpc_argp = &data->args, 740 .rpc_resp = &data->res, 741 .rpc_cred = data->cred, 742 }; 743 744 rpc_call_setup(&data->task, &msg, 0); 745 } 746 747 static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) 748 { 749 if (nfs3_async_handle_jukebox(task, data->inode)) 750 return -EAGAIN; 751 if (task->tk_status >= 0) 752 nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); 753 return 0; 754 } 755 756 static void nfs3_proc_write_setup(struct nfs_write_data *data, int how) 757 { 758 struct rpc_message msg = { 759 .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], 760 .rpc_argp = &data->args, 761 .rpc_resp = &data->res, 762 .rpc_cred = data->cred, 763 }; 764 765 data->args.stable = NFS_UNSTABLE; 766 if (how & FLUSH_STABLE) { 767 data->args.stable = NFS_FILE_SYNC; 768 if (NFS_I(data->inode)->ncommit) 769 data->args.stable = NFS_DATA_SYNC; 770 } 771 772 /* Finalize the task. */ 773 rpc_call_setup(&data->task, &msg, 0); 774 } 775 776 static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) 777 { 778 if (nfs3_async_handle_jukebox(task, data->inode)) 779 return -EAGAIN; 780 nfs_refresh_inode(data->inode, data->res.fattr); 781 return 0; 782 } 783 784 static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how) 785 { 786 struct rpc_message msg = { 787 .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], 788 .rpc_argp = &data->args, 789 .rpc_resp = &data->res, 790 .rpc_cred = data->cred, 791 }; 792 793 rpc_call_setup(&data->task, &msg, 0); 794 } 795 796 static int 797 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) 798 { 799 return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl); 800 } 801 802 const struct nfs_rpc_ops nfs_v3_clientops = { 803 .version = 3, /* protocol version */ 804 .dentry_ops = &nfs_dentry_operations, 805 .dir_inode_ops = &nfs3_dir_inode_operations, 806 .file_inode_ops = &nfs3_file_inode_operations, 807 .getroot = nfs3_proc_get_root, 808 .getattr = nfs3_proc_getattr, 809 .setattr = nfs3_proc_setattr, 810 .lookup = nfs3_proc_lookup, 811 .access = nfs3_proc_access, 812 .readlink = nfs3_proc_readlink, 813 .create = nfs3_proc_create, 814 .remove = nfs3_proc_remove, 815 .unlink_setup = nfs3_proc_unlink_setup, 816 .unlink_done = nfs3_proc_unlink_done, 817 .rename = nfs3_proc_rename, 818 .link = nfs3_proc_link, 819 .symlink = nfs3_proc_symlink, 820 .mkdir = nfs3_proc_mkdir, 821 .rmdir = nfs3_proc_rmdir, 822 .readdir = nfs3_proc_readdir, 823 .mknod = nfs3_proc_mknod, 824 .statfs = nfs3_proc_statfs, 825 .fsinfo = nfs3_proc_fsinfo, 826 .pathconf = nfs3_proc_pathconf, 827 .decode_dirent = nfs3_decode_dirent, 828 .read_setup = nfs3_proc_read_setup, 829 .read_done = nfs3_read_done, 830 .write_setup = nfs3_proc_write_setup, 831 .write_done = nfs3_write_done, 832 .commit_setup = nfs3_proc_commit_setup, 833 .commit_done = nfs3_commit_done, 834 .file_open = nfs_open, 835 .file_release = nfs_release, 836 .lock = nfs3_proc_lock, 837 .clear_acl_cache = nfs3_forget_cached_acls, 838 }; 839