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, 325 struct dentry *dentry, 326 struct inode *inode) 327 { 328 msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; 329 } 330 331 static void nfs_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) 332 { 333 rpc_call_start(task); 334 } 335 336 static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) 337 { 338 nfs_mark_for_revalidate(dir); 339 return 1; 340 } 341 342 static void 343 nfs_proc_rename_setup(struct rpc_message *msg, 344 struct dentry *old_dentry, 345 struct dentry *new_dentry) 346 { 347 msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; 348 } 349 350 static void nfs_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) 351 { 352 rpc_call_start(task); 353 } 354 355 static int 356 nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, 357 struct inode *new_dir) 358 { 359 nfs_mark_for_revalidate(old_dir); 360 nfs_mark_for_revalidate(new_dir); 361 return 1; 362 } 363 364 static int 365 nfs_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) 366 { 367 struct nfs_linkargs arg = { 368 .fromfh = NFS_FH(inode), 369 .tofh = NFS_FH(dir), 370 .toname = name->name, 371 .tolen = name->len 372 }; 373 struct rpc_message msg = { 374 .rpc_proc = &nfs_procedures[NFSPROC_LINK], 375 .rpc_argp = &arg, 376 }; 377 int status; 378 379 dprintk("NFS call link %s\n", name->name); 380 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 381 nfs_mark_for_revalidate(inode); 382 nfs_mark_for_revalidate(dir); 383 dprintk("NFS reply link: %d\n", status); 384 return status; 385 } 386 387 static int 388 nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, 389 unsigned int len, struct iattr *sattr) 390 { 391 struct nfs_fh *fh; 392 struct nfs_fattr *fattr; 393 struct nfs_symlinkargs arg = { 394 .fromfh = NFS_FH(dir), 395 .fromname = dentry->d_name.name, 396 .fromlen = dentry->d_name.len, 397 .pages = &page, 398 .pathlen = len, 399 .sattr = sattr 400 }; 401 struct rpc_message msg = { 402 .rpc_proc = &nfs_procedures[NFSPROC_SYMLINK], 403 .rpc_argp = &arg, 404 }; 405 int status = -ENAMETOOLONG; 406 407 dprintk("NFS call symlink %pd\n", dentry); 408 409 if (len > NFS2_MAXPATHLEN) 410 goto out; 411 412 fh = nfs_alloc_fhandle(); 413 fattr = nfs_alloc_fattr(); 414 status = -ENOMEM; 415 if (fh == NULL || fattr == NULL) 416 goto out_free; 417 418 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 419 nfs_mark_for_revalidate(dir); 420 421 /* 422 * V2 SYMLINK requests don't return any attributes. Setting the 423 * filehandle size to zero indicates to nfs_instantiate that it 424 * should fill in the data with a LOOKUP call on the wire. 425 */ 426 if (status == 0) 427 status = nfs_instantiate(dentry, fh, fattr, NULL); 428 429 out_free: 430 nfs_free_fattr(fattr); 431 nfs_free_fhandle(fh); 432 out: 433 dprintk("NFS reply symlink: %d\n", status); 434 return status; 435 } 436 437 static int 438 nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) 439 { 440 struct nfs_createdata *data; 441 struct rpc_message msg = { 442 .rpc_proc = &nfs_procedures[NFSPROC_MKDIR], 443 }; 444 int status = -ENOMEM; 445 446 dprintk("NFS call mkdir %pd\n", dentry); 447 data = nfs_alloc_createdata(dir, dentry, sattr); 448 if (data == NULL) 449 goto out; 450 msg.rpc_argp = &data->arg; 451 msg.rpc_resp = &data->res; 452 453 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 454 nfs_mark_for_revalidate(dir); 455 if (status == 0) 456 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); 457 nfs_free_createdata(data); 458 out: 459 dprintk("NFS reply mkdir: %d\n", status); 460 return status; 461 } 462 463 static int 464 nfs_proc_rmdir(struct inode *dir, const struct qstr *name) 465 { 466 struct nfs_diropargs arg = { 467 .fh = NFS_FH(dir), 468 .name = name->name, 469 .len = name->len 470 }; 471 struct rpc_message msg = { 472 .rpc_proc = &nfs_procedures[NFSPROC_RMDIR], 473 .rpc_argp = &arg, 474 }; 475 int status; 476 477 dprintk("NFS call rmdir %s\n", name->name); 478 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 479 nfs_mark_for_revalidate(dir); 480 dprintk("NFS reply rmdir: %d\n", status); 481 return status; 482 } 483 484 /* 485 * The READDIR implementation is somewhat hackish - we pass a temporary 486 * buffer to the encode function, which installs it in the receive 487 * the receive iovec. The decode function just parses the reply to make 488 * sure it is syntactically correct; the entries itself are decoded 489 * from nfs_readdir by calling the decode_entry function directly. 490 */ 491 static int 492 nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, 493 u64 cookie, struct page **pages, unsigned int count, bool plus) 494 { 495 struct inode *dir = d_inode(dentry); 496 struct nfs_readdirargs arg = { 497 .fh = NFS_FH(dir), 498 .cookie = cookie, 499 .count = count, 500 .pages = pages, 501 }; 502 struct rpc_message msg = { 503 .rpc_proc = &nfs_procedures[NFSPROC_READDIR], 504 .rpc_argp = &arg, 505 .rpc_cred = cred, 506 }; 507 int status; 508 509 dprintk("NFS call readdir %d\n", (unsigned int)cookie); 510 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 511 512 nfs_invalidate_atime(dir); 513 514 dprintk("NFS reply readdir: %d\n", status); 515 return status; 516 } 517 518 static int 519 nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, 520 struct nfs_fsstat *stat) 521 { 522 struct nfs2_fsstat fsinfo; 523 struct rpc_message msg = { 524 .rpc_proc = &nfs_procedures[NFSPROC_STATFS], 525 .rpc_argp = fhandle, 526 .rpc_resp = &fsinfo, 527 }; 528 int status; 529 530 dprintk("NFS call statfs\n"); 531 nfs_fattr_init(stat->fattr); 532 status = rpc_call_sync(server->client, &msg, 0); 533 dprintk("NFS reply statfs: %d\n", status); 534 if (status) 535 goto out; 536 stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; 537 stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; 538 stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; 539 stat->tfiles = 0; 540 stat->ffiles = 0; 541 stat->afiles = 0; 542 out: 543 return status; 544 } 545 546 static int 547 nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, 548 struct nfs_fsinfo *info) 549 { 550 struct nfs2_fsstat fsinfo; 551 struct rpc_message msg = { 552 .rpc_proc = &nfs_procedures[NFSPROC_STATFS], 553 .rpc_argp = fhandle, 554 .rpc_resp = &fsinfo, 555 }; 556 int status; 557 558 dprintk("NFS call fsinfo\n"); 559 nfs_fattr_init(info->fattr); 560 status = rpc_call_sync(server->client, &msg, 0); 561 dprintk("NFS reply fsinfo: %d\n", status); 562 if (status) 563 goto out; 564 info->rtmax = NFS_MAXDATA; 565 info->rtpref = fsinfo.tsize; 566 info->rtmult = fsinfo.bsize; 567 info->wtmax = NFS_MAXDATA; 568 info->wtpref = fsinfo.tsize; 569 info->wtmult = fsinfo.bsize; 570 info->dtpref = fsinfo.tsize; 571 info->maxfilesize = 0x7FFFFFFF; 572 info->lease_time = 0; 573 out: 574 return status; 575 } 576 577 static int 578 nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, 579 struct nfs_pathconf *info) 580 { 581 info->max_link = 0; 582 info->max_namelen = NFS2_MAXNAMLEN; 583 return 0; 584 } 585 586 static int nfs_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) 587 { 588 struct inode *inode = hdr->inode; 589 590 nfs_invalidate_atime(inode); 591 if (task->tk_status >= 0) { 592 nfs_refresh_inode(inode, hdr->res.fattr); 593 /* Emulate the eof flag, which isn't normally needed in NFSv2 594 * as it is guaranteed to always return the file attributes 595 */ 596 if (hdr->args.offset + hdr->res.count >= hdr->res.fattr->size) 597 hdr->res.eof = 1; 598 } 599 return 0; 600 } 601 602 static void nfs_proc_read_setup(struct nfs_pgio_header *hdr, 603 struct rpc_message *msg) 604 { 605 msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; 606 } 607 608 static int nfs_proc_pgio_rpc_prepare(struct rpc_task *task, 609 struct nfs_pgio_header *hdr) 610 { 611 rpc_call_start(task); 612 return 0; 613 } 614 615 static int nfs_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) 616 { 617 if (task->tk_status >= 0) 618 nfs_writeback_update_inode(hdr); 619 return 0; 620 } 621 622 static void nfs_proc_write_setup(struct nfs_pgio_header *hdr, 623 struct rpc_message *msg, 624 struct rpc_clnt **clnt) 625 { 626 /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ 627 hdr->args.stable = NFS_FILE_SYNC; 628 msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; 629 } 630 631 static void nfs_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) 632 { 633 BUG(); 634 } 635 636 static void 637 nfs_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, 638 struct rpc_clnt **clnt) 639 { 640 BUG(); 641 } 642 643 static int 644 nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) 645 { 646 struct inode *inode = file_inode(filp); 647 648 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, NULL); 649 } 650 651 /* Helper functions for NFS lock bounds checking */ 652 #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL) 653 static int nfs_lock_check_bounds(const struct file_lock *fl) 654 { 655 __s32 start, end; 656 657 start = (__s32)fl->fl_start; 658 if ((loff_t)start != fl->fl_start) 659 goto out_einval; 660 661 if (fl->fl_end != OFFSET_MAX) { 662 end = (__s32)fl->fl_end; 663 if ((loff_t)end != fl->fl_end) 664 goto out_einval; 665 } else 666 end = NFS_LOCK32_OFFSET_MAX; 667 668 if (start < 0 || start > end) 669 goto out_einval; 670 return 0; 671 out_einval: 672 return -EINVAL; 673 } 674 675 static int nfs_have_delegation(struct inode *inode, fmode_t flags) 676 { 677 return 0; 678 } 679 680 static const struct inode_operations nfs_dir_inode_operations = { 681 .create = nfs_create, 682 .lookup = nfs_lookup, 683 .link = nfs_link, 684 .unlink = nfs_unlink, 685 .symlink = nfs_symlink, 686 .mkdir = nfs_mkdir, 687 .rmdir = nfs_rmdir, 688 .mknod = nfs_mknod, 689 .rename = nfs_rename, 690 .permission = nfs_permission, 691 .getattr = nfs_getattr, 692 .setattr = nfs_setattr, 693 }; 694 695 static const struct inode_operations nfs_file_inode_operations = { 696 .permission = nfs_permission, 697 .getattr = nfs_getattr, 698 .setattr = nfs_setattr, 699 }; 700 701 const struct nfs_rpc_ops nfs_v2_clientops = { 702 .version = 2, /* protocol version */ 703 .dentry_ops = &nfs_dentry_operations, 704 .dir_inode_ops = &nfs_dir_inode_operations, 705 .file_inode_ops = &nfs_file_inode_operations, 706 .file_ops = &nfs_file_operations, 707 .getroot = nfs_proc_get_root, 708 .submount = nfs_submount, 709 .try_mount = nfs_try_mount, 710 .getattr = nfs_proc_getattr, 711 .setattr = nfs_proc_setattr, 712 .lookup = nfs_proc_lookup, 713 .access = NULL, /* access */ 714 .readlink = nfs_proc_readlink, 715 .create = nfs_proc_create, 716 .remove = nfs_proc_remove, 717 .unlink_setup = nfs_proc_unlink_setup, 718 .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, 719 .unlink_done = nfs_proc_unlink_done, 720 .rename_setup = nfs_proc_rename_setup, 721 .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, 722 .rename_done = nfs_proc_rename_done, 723 .link = nfs_proc_link, 724 .symlink = nfs_proc_symlink, 725 .mkdir = nfs_proc_mkdir, 726 .rmdir = nfs_proc_rmdir, 727 .readdir = nfs_proc_readdir, 728 .mknod = nfs_proc_mknod, 729 .statfs = nfs_proc_statfs, 730 .fsinfo = nfs_proc_fsinfo, 731 .pathconf = nfs_proc_pathconf, 732 .decode_dirent = nfs2_decode_dirent, 733 .pgio_rpc_prepare = nfs_proc_pgio_rpc_prepare, 734 .read_setup = nfs_proc_read_setup, 735 .read_done = nfs_read_done, 736 .write_setup = nfs_proc_write_setup, 737 .write_done = nfs_write_done, 738 .commit_setup = nfs_proc_commit_setup, 739 .commit_rpc_prepare = nfs_proc_commit_rpc_prepare, 740 .lock = nfs_proc_lock, 741 .lock_check_bounds = nfs_lock_check_bounds, 742 .close_context = nfs_close_context, 743 .have_delegation = nfs_have_delegation, 744 .alloc_client = nfs_alloc_client, 745 .init_client = nfs_init_client, 746 .free_client = nfs_free_client, 747 .create_server = nfs_create_server, 748 .clone_server = nfs_clone_server, 749 }; 750