1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/fs/nfs/proc.c 4 * 5 * Copyright (C) 1992, 1993, 1994 Rick Sladkey 6 * 7 * OS-independent nfs remote procedure call functions 8 * 9 * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers 10 * so at last we can have decent(ish) throughput off a 11 * Sun server. 12 * 13 * Coding optimized and cleaned up by Florian La Roche. 14 * Note: Error returns are optimized for NFS_OK, which isn't translated via 15 * nfs_stat_to_errno(), but happens to be already the right return code. 16 * 17 * Also, the code currently doesn't check the size of the packet, when 18 * it decodes the packet. 19 * 20 * Feel free to fix it and mail me the diffs if it worries you. 21 * 22 * Completely rewritten to support the new RPC call interface; 23 * rewrote and moved the entire XDR stuff to xdr.c 24 * --Olaf Kirch June 1996 25 * 26 * The code below initializes all auto variables explicitly, otherwise 27 * it will fail to work as a module (gcc generates a memset call for an 28 * incomplete struct). 29 */ 30 31 #include <linux/types.h> 32 #include <linux/param.h> 33 #include <linux/time.h> 34 #include <linux/mm.h> 35 #include <linux/errno.h> 36 #include <linux/string.h> 37 #include <linux/in.h> 38 #include <linux/pagemap.h> 39 #include <linux/sunrpc/clnt.h> 40 #include <linux/nfs.h> 41 #include <linux/nfs2.h> 42 #include <linux/nfs_fs.h> 43 #include <linux/nfs_page.h> 44 #include <linux/lockd/bind.h> 45 #include <linux/freezer.h> 46 #include "internal.h" 47 48 #define NFSDBG_FACILITY NFSDBG_PROC 49 50 /* 51 * Bare-bones access to getattr: this is for nfs_read_super. 52 */ 53 static int 54 nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, 55 struct nfs_fsinfo *info) 56 { 57 struct nfs_fattr *fattr = info->fattr; 58 struct nfs2_fsstat fsinfo; 59 struct rpc_message msg = { 60 .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], 61 .rpc_argp = fhandle, 62 .rpc_resp = fattr, 63 }; 64 int status; 65 66 dprintk("%s: call getattr\n", __func__); 67 nfs_fattr_init(fattr); 68 status = rpc_call_sync(server->client, &msg, 0); 69 /* Retry with default authentication if different */ 70 if (status && server->nfs_client->cl_rpcclient != server->client) 71 status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); 72 dprintk("%s: reply getattr: %d\n", __func__, status); 73 if (status) 74 return status; 75 dprintk("%s: call statfs\n", __func__); 76 msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS]; 77 msg.rpc_resp = &fsinfo; 78 status = rpc_call_sync(server->client, &msg, 0); 79 /* Retry with default authentication if different */ 80 if (status && server->nfs_client->cl_rpcclient != server->client) 81 status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); 82 dprintk("%s: reply statfs: %d\n", __func__, status); 83 if (status) 84 return status; 85 info->rtmax = NFS_MAXDATA; 86 info->rtpref = fsinfo.tsize; 87 info->rtmult = fsinfo.bsize; 88 info->wtmax = NFS_MAXDATA; 89 info->wtpref = fsinfo.tsize; 90 info->wtmult = fsinfo.bsize; 91 info->dtpref = fsinfo.tsize; 92 info->maxfilesize = 0x7FFFFFFF; 93 info->lease_time = 0; 94 return 0; 95 } 96 97 /* 98 * One function for each procedure in the NFS protocol. 99 */ 100 static int 101 nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, 102 struct nfs_fattr *fattr, struct nfs4_label *label) 103 { 104 struct rpc_message msg = { 105 .rpc_proc = &nfs_procedures[NFSPROC_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 nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, 120 struct iattr *sattr) 121 { 122 struct inode *inode = d_inode(dentry); 123 struct nfs_sattrargs arg = { 124 .fh = NFS_FH(inode), 125 .sattr = sattr 126 }; 127 struct rpc_message msg = { 128 .rpc_proc = &nfs_procedures[NFSPROC_SETATTR], 129 .rpc_argp = &arg, 130 .rpc_resp = fattr, 131 }; 132 int status; 133 134 /* Mask out the non-modebit related stuff from attr->ia_mode */ 135 sattr->ia_mode &= S_IALLUGO; 136 137 dprintk("NFS call setattr\n"); 138 if (sattr->ia_valid & ATTR_FILE) 139 msg.rpc_cred = nfs_file_cred(sattr->ia_file); 140 nfs_fattr_init(fattr); 141 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 142 if (status == 0) 143 nfs_setattr_update_inode(inode, sattr, fattr); 144 dprintk("NFS reply setattr: %d\n", status); 145 return status; 146 } 147 148 static int 149 nfs_proc_lookup(struct inode *dir, const struct qstr *name, 150 struct nfs_fh *fhandle, struct nfs_fattr *fattr, 151 struct nfs4_label *label) 152 { 153 struct nfs_diropargs arg = { 154 .fh = NFS_FH(dir), 155 .name = name->name, 156 .len = name->len 157 }; 158 struct nfs_diropok res = { 159 .fh = fhandle, 160 .fattr = fattr 161 }; 162 struct rpc_message msg = { 163 .rpc_proc = &nfs_procedures[NFSPROC_LOOKUP], 164 .rpc_argp = &arg, 165 .rpc_resp = &res, 166 }; 167 int status; 168 169 dprintk("NFS call lookup %s\n", name->name); 170 nfs_fattr_init(fattr); 171 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 172 dprintk("NFS reply lookup: %d\n", status); 173 return status; 174 } 175 176 static int nfs_proc_readlink(struct inode *inode, struct page *page, 177 unsigned int pgbase, unsigned int pglen) 178 { 179 struct nfs_readlinkargs args = { 180 .fh = NFS_FH(inode), 181 .pgbase = pgbase, 182 .pglen = pglen, 183 .pages = &page 184 }; 185 struct rpc_message msg = { 186 .rpc_proc = &nfs_procedures[NFSPROC_READLINK], 187 .rpc_argp = &args, 188 }; 189 int status; 190 191 dprintk("NFS call readlink\n"); 192 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 193 dprintk("NFS reply readlink: %d\n", status); 194 return status; 195 } 196 197 struct nfs_createdata { 198 struct nfs_createargs arg; 199 struct nfs_diropok res; 200 struct nfs_fh fhandle; 201 struct nfs_fattr fattr; 202 }; 203 204 static struct nfs_createdata *nfs_alloc_createdata(struct inode *dir, 205 struct dentry *dentry, struct iattr *sattr) 206 { 207 struct nfs_createdata *data; 208 209 data = kmalloc(sizeof(*data), GFP_KERNEL); 210 211 if (data != NULL) { 212 data->arg.fh = NFS_FH(dir); 213 data->arg.name = dentry->d_name.name; 214 data->arg.len = dentry->d_name.len; 215 data->arg.sattr = sattr; 216 nfs_fattr_init(&data->fattr); 217 data->fhandle.size = 0; 218 data->res.fh = &data->fhandle; 219 data->res.fattr = &data->fattr; 220 } 221 return data; 222 }; 223 224 static void nfs_free_createdata(const struct nfs_createdata *data) 225 { 226 kfree(data); 227 } 228 229 static int 230 nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 231 int flags) 232 { 233 struct nfs_createdata *data; 234 struct rpc_message msg = { 235 .rpc_proc = &nfs_procedures[NFSPROC_CREATE], 236 }; 237 int status = -ENOMEM; 238 239 dprintk("NFS call create %pd\n", dentry); 240 data = nfs_alloc_createdata(dir, dentry, sattr); 241 if (data == NULL) 242 goto out; 243 msg.rpc_argp = &data->arg; 244 msg.rpc_resp = &data->res; 245 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 246 nfs_mark_for_revalidate(dir); 247 if (status == 0) 248 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); 249 nfs_free_createdata(data); 250 out: 251 dprintk("NFS reply create: %d\n", status); 252 return status; 253 } 254 255 /* 256 * In NFSv2, mknod is grafted onto the create call. 257 */ 258 static int 259 nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 260 dev_t rdev) 261 { 262 struct nfs_createdata *data; 263 struct rpc_message msg = { 264 .rpc_proc = &nfs_procedures[NFSPROC_CREATE], 265 }; 266 umode_t mode; 267 int status = -ENOMEM; 268 269 dprintk("NFS call mknod %pd\n", dentry); 270 271 mode = sattr->ia_mode; 272 if (S_ISFIFO(mode)) { 273 sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; 274 sattr->ia_valid &= ~ATTR_SIZE; 275 } else if (S_ISCHR(mode) || S_ISBLK(mode)) { 276 sattr->ia_valid |= ATTR_SIZE; 277 sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ 278 } 279 280 data = nfs_alloc_createdata(dir, dentry, sattr); 281 if (data == NULL) 282 goto out; 283 msg.rpc_argp = &data->arg; 284 msg.rpc_resp = &data->res; 285 286 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 287 nfs_mark_for_revalidate(dir); 288 289 if (status == -EINVAL && S_ISFIFO(mode)) { 290 sattr->ia_mode = mode; 291 nfs_fattr_init(data->res.fattr); 292 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 293 } 294 if (status == 0) 295 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); 296 nfs_free_createdata(data); 297 out: 298 dprintk("NFS reply mknod: %d\n", status); 299 return status; 300 } 301 302 static int 303 nfs_proc_remove(struct inode *dir, struct dentry *dentry) 304 { 305 struct nfs_removeargs arg = { 306 .fh = NFS_FH(dir), 307 .name = dentry->d_name, 308 }; 309 struct rpc_message msg = { 310 .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], 311 .rpc_argp = &arg, 312 }; 313 int status; 314 315 dprintk("NFS call remove %pd2\n",dentry); 316 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 317 nfs_mark_for_revalidate(dir); 318 319 dprintk("NFS reply remove: %d\n", status); 320 return status; 321 } 322 323 static void 324 nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) 325 { 326 msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; 327 } 328 329 static void nfs_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) 330 { 331 rpc_call_start(task); 332 } 333 334 static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) 335 { 336 nfs_mark_for_revalidate(dir); 337 return 1; 338 } 339 340 static void 341 nfs_proc_rename_setup(struct rpc_message *msg, 342 struct dentry *old_dentry, 343 struct dentry *new_dentry) 344 { 345 msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; 346 } 347 348 static void nfs_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) 349 { 350 rpc_call_start(task); 351 } 352 353 static int 354 nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, 355 struct inode *new_dir) 356 { 357 nfs_mark_for_revalidate(old_dir); 358 nfs_mark_for_revalidate(new_dir); 359 return 1; 360 } 361 362 static int 363 nfs_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) 364 { 365 struct nfs_linkargs arg = { 366 .fromfh = NFS_FH(inode), 367 .tofh = NFS_FH(dir), 368 .toname = name->name, 369 .tolen = name->len 370 }; 371 struct rpc_message msg = { 372 .rpc_proc = &nfs_procedures[NFSPROC_LINK], 373 .rpc_argp = &arg, 374 }; 375 int status; 376 377 dprintk("NFS call link %s\n", name->name); 378 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 379 nfs_mark_for_revalidate(inode); 380 nfs_mark_for_revalidate(dir); 381 dprintk("NFS reply link: %d\n", status); 382 return status; 383 } 384 385 static int 386 nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, 387 unsigned int len, struct iattr *sattr) 388 { 389 struct nfs_fh *fh; 390 struct nfs_fattr *fattr; 391 struct nfs_symlinkargs arg = { 392 .fromfh = NFS_FH(dir), 393 .fromname = dentry->d_name.name, 394 .fromlen = dentry->d_name.len, 395 .pages = &page, 396 .pathlen = len, 397 .sattr = sattr 398 }; 399 struct rpc_message msg = { 400 .rpc_proc = &nfs_procedures[NFSPROC_SYMLINK], 401 .rpc_argp = &arg, 402 }; 403 int status = -ENAMETOOLONG; 404 405 dprintk("NFS call symlink %pd\n", dentry); 406 407 if (len > NFS2_MAXPATHLEN) 408 goto out; 409 410 fh = nfs_alloc_fhandle(); 411 fattr = nfs_alloc_fattr(); 412 status = -ENOMEM; 413 if (fh == NULL || fattr == NULL) 414 goto out_free; 415 416 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 417 nfs_mark_for_revalidate(dir); 418 419 /* 420 * V2 SYMLINK requests don't return any attributes. Setting the 421 * filehandle size to zero indicates to nfs_instantiate that it 422 * should fill in the data with a LOOKUP call on the wire. 423 */ 424 if (status == 0) 425 status = nfs_instantiate(dentry, fh, fattr, NULL); 426 427 out_free: 428 nfs_free_fattr(fattr); 429 nfs_free_fhandle(fh); 430 out: 431 dprintk("NFS reply symlink: %d\n", status); 432 return status; 433 } 434 435 static int 436 nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) 437 { 438 struct nfs_createdata *data; 439 struct rpc_message msg = { 440 .rpc_proc = &nfs_procedures[NFSPROC_MKDIR], 441 }; 442 int status = -ENOMEM; 443 444 dprintk("NFS call mkdir %pd\n", dentry); 445 data = nfs_alloc_createdata(dir, dentry, sattr); 446 if (data == NULL) 447 goto out; 448 msg.rpc_argp = &data->arg; 449 msg.rpc_resp = &data->res; 450 451 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 452 nfs_mark_for_revalidate(dir); 453 if (status == 0) 454 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); 455 nfs_free_createdata(data); 456 out: 457 dprintk("NFS reply mkdir: %d\n", status); 458 return status; 459 } 460 461 static int 462 nfs_proc_rmdir(struct inode *dir, const struct qstr *name) 463 { 464 struct nfs_diropargs arg = { 465 .fh = NFS_FH(dir), 466 .name = name->name, 467 .len = name->len 468 }; 469 struct rpc_message msg = { 470 .rpc_proc = &nfs_procedures[NFSPROC_RMDIR], 471 .rpc_argp = &arg, 472 }; 473 int status; 474 475 dprintk("NFS call rmdir %s\n", name->name); 476 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 477 nfs_mark_for_revalidate(dir); 478 dprintk("NFS reply rmdir: %d\n", status); 479 return status; 480 } 481 482 /* 483 * The READDIR implementation is somewhat hackish - we pass a temporary 484 * buffer to the encode function, which installs it in the receive 485 * the receive iovec. The decode function just parses the reply to make 486 * sure it is syntactically correct; the entries itself are decoded 487 * from nfs_readdir by calling the decode_entry function directly. 488 */ 489 static int 490 nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, 491 u64 cookie, struct page **pages, unsigned int count, bool plus) 492 { 493 struct inode *dir = d_inode(dentry); 494 struct nfs_readdirargs arg = { 495 .fh = NFS_FH(dir), 496 .cookie = cookie, 497 .count = count, 498 .pages = pages, 499 }; 500 struct rpc_message msg = { 501 .rpc_proc = &nfs_procedures[NFSPROC_READDIR], 502 .rpc_argp = &arg, 503 .rpc_cred = cred, 504 }; 505 int status; 506 507 dprintk("NFS call readdir %d\n", (unsigned int)cookie); 508 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 509 510 nfs_invalidate_atime(dir); 511 512 dprintk("NFS reply readdir: %d\n", status); 513 return status; 514 } 515 516 static int 517 nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, 518 struct nfs_fsstat *stat) 519 { 520 struct nfs2_fsstat fsinfo; 521 struct rpc_message msg = { 522 .rpc_proc = &nfs_procedures[NFSPROC_STATFS], 523 .rpc_argp = fhandle, 524 .rpc_resp = &fsinfo, 525 }; 526 int status; 527 528 dprintk("NFS call statfs\n"); 529 nfs_fattr_init(stat->fattr); 530 status = rpc_call_sync(server->client, &msg, 0); 531 dprintk("NFS reply statfs: %d\n", status); 532 if (status) 533 goto out; 534 stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; 535 stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; 536 stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; 537 stat->tfiles = 0; 538 stat->ffiles = 0; 539 stat->afiles = 0; 540 out: 541 return status; 542 } 543 544 static int 545 nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, 546 struct nfs_fsinfo *info) 547 { 548 struct nfs2_fsstat fsinfo; 549 struct rpc_message msg = { 550 .rpc_proc = &nfs_procedures[NFSPROC_STATFS], 551 .rpc_argp = fhandle, 552 .rpc_resp = &fsinfo, 553 }; 554 int status; 555 556 dprintk("NFS call fsinfo\n"); 557 nfs_fattr_init(info->fattr); 558 status = rpc_call_sync(server->client, &msg, 0); 559 dprintk("NFS reply fsinfo: %d\n", status); 560 if (status) 561 goto out; 562 info->rtmax = NFS_MAXDATA; 563 info->rtpref = fsinfo.tsize; 564 info->rtmult = fsinfo.bsize; 565 info->wtmax = NFS_MAXDATA; 566 info->wtpref = fsinfo.tsize; 567 info->wtmult = fsinfo.bsize; 568 info->dtpref = fsinfo.tsize; 569 info->maxfilesize = 0x7FFFFFFF; 570 info->lease_time = 0; 571 out: 572 return status; 573 } 574 575 static int 576 nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, 577 struct nfs_pathconf *info) 578 { 579 info->max_link = 0; 580 info->max_namelen = NFS2_MAXNAMLEN; 581 return 0; 582 } 583 584 static int nfs_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) 585 { 586 struct inode *inode = hdr->inode; 587 588 nfs_invalidate_atime(inode); 589 if (task->tk_status >= 0) { 590 nfs_refresh_inode(inode, hdr->res.fattr); 591 /* Emulate the eof flag, which isn't normally needed in NFSv2 592 * as it is guaranteed to always return the file attributes 593 */ 594 if (hdr->args.offset + hdr->res.count >= hdr->res.fattr->size) 595 hdr->res.eof = 1; 596 } 597 return 0; 598 } 599 600 static void nfs_proc_read_setup(struct nfs_pgio_header *hdr, 601 struct rpc_message *msg) 602 { 603 msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; 604 } 605 606 static int nfs_proc_pgio_rpc_prepare(struct rpc_task *task, 607 struct nfs_pgio_header *hdr) 608 { 609 rpc_call_start(task); 610 return 0; 611 } 612 613 static int nfs_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) 614 { 615 if (task->tk_status >= 0) 616 nfs_writeback_update_inode(hdr); 617 return 0; 618 } 619 620 static void nfs_proc_write_setup(struct nfs_pgio_header *hdr, 621 struct rpc_message *msg) 622 { 623 /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ 624 hdr->args.stable = NFS_FILE_SYNC; 625 msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; 626 } 627 628 static void nfs_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) 629 { 630 BUG(); 631 } 632 633 static void 634 nfs_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) 635 { 636 BUG(); 637 } 638 639 static int 640 nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) 641 { 642 struct inode *inode = file_inode(filp); 643 644 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, NULL); 645 } 646 647 /* Helper functions for NFS lock bounds checking */ 648 #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL) 649 static int nfs_lock_check_bounds(const struct file_lock *fl) 650 { 651 __s32 start, end; 652 653 start = (__s32)fl->fl_start; 654 if ((loff_t)start != fl->fl_start) 655 goto out_einval; 656 657 if (fl->fl_end != OFFSET_MAX) { 658 end = (__s32)fl->fl_end; 659 if ((loff_t)end != fl->fl_end) 660 goto out_einval; 661 } else 662 end = NFS_LOCK32_OFFSET_MAX; 663 664 if (start < 0 || start > end) 665 goto out_einval; 666 return 0; 667 out_einval: 668 return -EINVAL; 669 } 670 671 static int nfs_have_delegation(struct inode *inode, fmode_t flags) 672 { 673 return 0; 674 } 675 676 static const struct inode_operations nfs_dir_inode_operations = { 677 .create = nfs_create, 678 .lookup = nfs_lookup, 679 .link = nfs_link, 680 .unlink = nfs_unlink, 681 .symlink = nfs_symlink, 682 .mkdir = nfs_mkdir, 683 .rmdir = nfs_rmdir, 684 .mknod = nfs_mknod, 685 .rename = nfs_rename, 686 .permission = nfs_permission, 687 .getattr = nfs_getattr, 688 .setattr = nfs_setattr, 689 }; 690 691 static const struct inode_operations nfs_file_inode_operations = { 692 .permission = nfs_permission, 693 .getattr = nfs_getattr, 694 .setattr = nfs_setattr, 695 }; 696 697 const struct nfs_rpc_ops nfs_v2_clientops = { 698 .version = 2, /* protocol version */ 699 .dentry_ops = &nfs_dentry_operations, 700 .dir_inode_ops = &nfs_dir_inode_operations, 701 .file_inode_ops = &nfs_file_inode_operations, 702 .file_ops = &nfs_file_operations, 703 .getroot = nfs_proc_get_root, 704 .submount = nfs_submount, 705 .try_mount = nfs_try_mount, 706 .getattr = nfs_proc_getattr, 707 .setattr = nfs_proc_setattr, 708 .lookup = nfs_proc_lookup, 709 .access = NULL, /* access */ 710 .readlink = nfs_proc_readlink, 711 .create = nfs_proc_create, 712 .remove = nfs_proc_remove, 713 .unlink_setup = nfs_proc_unlink_setup, 714 .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, 715 .unlink_done = nfs_proc_unlink_done, 716 .rename_setup = nfs_proc_rename_setup, 717 .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, 718 .rename_done = nfs_proc_rename_done, 719 .link = nfs_proc_link, 720 .symlink = nfs_proc_symlink, 721 .mkdir = nfs_proc_mkdir, 722 .rmdir = nfs_proc_rmdir, 723 .readdir = nfs_proc_readdir, 724 .mknod = nfs_proc_mknod, 725 .statfs = nfs_proc_statfs, 726 .fsinfo = nfs_proc_fsinfo, 727 .pathconf = nfs_proc_pathconf, 728 .decode_dirent = nfs2_decode_dirent, 729 .pgio_rpc_prepare = nfs_proc_pgio_rpc_prepare, 730 .read_setup = nfs_proc_read_setup, 731 .read_done = nfs_read_done, 732 .write_setup = nfs_proc_write_setup, 733 .write_done = nfs_write_done, 734 .commit_setup = nfs_proc_commit_setup, 735 .commit_rpc_prepare = nfs_proc_commit_rpc_prepare, 736 .lock = nfs_proc_lock, 737 .lock_check_bounds = nfs_lock_check_bounds, 738 .close_context = nfs_close_context, 739 .have_delegation = nfs_have_delegation, 740 .alloc_client = nfs_alloc_client, 741 .init_client = nfs_init_client, 742 .free_client = nfs_free_client, 743 .create_server = nfs_create_server, 744 .clone_server = nfs_clone_server, 745 }; 746