1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Process version 3 NFS requests. 4 * 5 * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de> 6 */ 7 8 #include <linux/fs.h> 9 #include <linux/ext2_fs.h> 10 #include <linux/magic.h> 11 12 #include "cache.h" 13 #include "xdr3.h" 14 #include "vfs.h" 15 16 #define NFSDDBG_FACILITY NFSDDBG_PROC 17 18 static int nfs3_ftypes[] = { 19 0, /* NF3NON */ 20 S_IFREG, /* NF3REG */ 21 S_IFDIR, /* NF3DIR */ 22 S_IFBLK, /* NF3BLK */ 23 S_IFCHR, /* NF3CHR */ 24 S_IFLNK, /* NF3LNK */ 25 S_IFSOCK, /* NF3SOCK */ 26 S_IFIFO, /* NF3FIFO */ 27 }; 28 29 /* 30 * NULL call. 31 */ 32 static __be32 33 nfsd3_proc_null(struct svc_rqst *rqstp) 34 { 35 return rpc_success; 36 } 37 38 /* 39 * Get a file's attributes 40 */ 41 static __be32 42 nfsd3_proc_getattr(struct svc_rqst *rqstp) 43 { 44 struct nfsd_fhandle *argp = rqstp->rq_argp; 45 struct nfsd3_attrstat *resp = rqstp->rq_resp; 46 47 dprintk("nfsd: GETATTR(3) %s\n", 48 SVCFH_fmt(&argp->fh)); 49 50 fh_copy(&resp->fh, &argp->fh); 51 resp->status = fh_verify(rqstp, &resp->fh, 0, 52 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); 53 if (resp->status != nfs_ok) 54 goto out; 55 56 resp->status = fh_getattr(&resp->fh, &resp->stat); 57 out: 58 return rpc_success; 59 } 60 61 /* 62 * Set a file's attributes 63 */ 64 static __be32 65 nfsd3_proc_setattr(struct svc_rqst *rqstp) 66 { 67 struct nfsd3_sattrargs *argp = rqstp->rq_argp; 68 struct nfsd3_attrstat *resp = rqstp->rq_resp; 69 70 dprintk("nfsd: SETATTR(3) %s\n", 71 SVCFH_fmt(&argp->fh)); 72 73 fh_copy(&resp->fh, &argp->fh); 74 resp->status = nfsd_setattr(rqstp, &resp->fh, &argp->attrs, 75 argp->check_guard, argp->guardtime); 76 return rpc_success; 77 } 78 79 /* 80 * Look up a path name component 81 */ 82 static __be32 83 nfsd3_proc_lookup(struct svc_rqst *rqstp) 84 { 85 struct nfsd3_diropargs *argp = rqstp->rq_argp; 86 struct nfsd3_diropres *resp = rqstp->rq_resp; 87 88 dprintk("nfsd: LOOKUP(3) %s %.*s\n", 89 SVCFH_fmt(&argp->fh), 90 argp->len, 91 argp->name); 92 93 fh_copy(&resp->dirfh, &argp->fh); 94 fh_init(&resp->fh, NFS3_FHSIZE); 95 96 resp->status = nfsd_lookup(rqstp, &resp->dirfh, 97 argp->name, argp->len, 98 &resp->fh); 99 return rpc_success; 100 } 101 102 /* 103 * Check file access 104 */ 105 static __be32 106 nfsd3_proc_access(struct svc_rqst *rqstp) 107 { 108 struct nfsd3_accessargs *argp = rqstp->rq_argp; 109 struct nfsd3_accessres *resp = rqstp->rq_resp; 110 111 dprintk("nfsd: ACCESS(3) %s 0x%x\n", 112 SVCFH_fmt(&argp->fh), 113 argp->access); 114 115 fh_copy(&resp->fh, &argp->fh); 116 resp->access = argp->access; 117 resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL); 118 return rpc_success; 119 } 120 121 /* 122 * Read a symlink. 123 */ 124 static __be32 125 nfsd3_proc_readlink(struct svc_rqst *rqstp) 126 { 127 struct nfsd_fhandle *argp = rqstp->rq_argp; 128 struct nfsd3_readlinkres *resp = rqstp->rq_resp; 129 130 dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); 131 132 /* Read the symlink. */ 133 fh_copy(&resp->fh, &argp->fh); 134 resp->len = NFS3_MAXPATHLEN; 135 resp->pages = rqstp->rq_next_page++; 136 resp->status = nfsd_readlink(rqstp, &resp->fh, 137 page_address(*resp->pages), &resp->len); 138 return rpc_success; 139 } 140 141 /* 142 * Read a portion of a file. 143 */ 144 static __be32 145 nfsd3_proc_read(struct svc_rqst *rqstp) 146 { 147 struct nfsd3_readargs *argp = rqstp->rq_argp; 148 struct nfsd3_readres *resp = rqstp->rq_resp; 149 u32 max_blocksize = svc_max_payload(rqstp); 150 unsigned int len; 151 int v; 152 153 argp->count = min_t(u32, argp->count, max_blocksize); 154 155 dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n", 156 SVCFH_fmt(&argp->fh), 157 (unsigned long) argp->count, 158 (unsigned long long) argp->offset); 159 160 v = 0; 161 len = argp->count; 162 resp->pages = rqstp->rq_next_page; 163 while (len > 0) { 164 struct page *page = *(rqstp->rq_next_page++); 165 166 rqstp->rq_vec[v].iov_base = page_address(page); 167 rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE); 168 len -= rqstp->rq_vec[v].iov_len; 169 v++; 170 } 171 172 /* Obtain buffer pointer for payload. 173 * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof) 174 * + 1 (xdr opaque byte count) = 26 175 */ 176 resp->count = argp->count; 177 svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); 178 179 fh_copy(&resp->fh, &argp->fh); 180 resp->status = nfsd_read(rqstp, &resp->fh, argp->offset, 181 rqstp->rq_vec, v, &resp->count, &resp->eof); 182 return rpc_success; 183 } 184 185 /* 186 * Write data to a file 187 */ 188 static __be32 189 nfsd3_proc_write(struct svc_rqst *rqstp) 190 { 191 struct nfsd3_writeargs *argp = rqstp->rq_argp; 192 struct nfsd3_writeres *resp = rqstp->rq_resp; 193 unsigned long cnt = argp->len; 194 unsigned int nvecs; 195 196 dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n", 197 SVCFH_fmt(&argp->fh), 198 argp->len, 199 (unsigned long long) argp->offset, 200 argp->stable? " stable" : ""); 201 202 fh_copy(&resp->fh, &argp->fh); 203 resp->committed = argp->stable; 204 nvecs = svc_fill_write_vector(rqstp, &argp->payload); 205 206 resp->status = nfsd_write(rqstp, &resp->fh, argp->offset, 207 rqstp->rq_vec, nvecs, &cnt, 208 resp->committed, resp->verf); 209 resp->count = cnt; 210 return rpc_success; 211 } 212 213 /* 214 * With NFSv3, CREATE processing is a lot easier than with NFSv2. 215 * At least in theory; we'll see how it fares in practice when the 216 * first reports about SunOS compatibility problems start to pour in... 217 */ 218 static __be32 219 nfsd3_proc_create(struct svc_rqst *rqstp) 220 { 221 struct nfsd3_createargs *argp = rqstp->rq_argp; 222 struct nfsd3_diropres *resp = rqstp->rq_resp; 223 svc_fh *dirfhp, *newfhp = NULL; 224 struct iattr *attr; 225 226 dprintk("nfsd: CREATE(3) %s %.*s\n", 227 SVCFH_fmt(&argp->fh), 228 argp->len, 229 argp->name); 230 231 dirfhp = fh_copy(&resp->dirfh, &argp->fh); 232 newfhp = fh_init(&resp->fh, NFS3_FHSIZE); 233 attr = &argp->attrs; 234 235 /* Unfudge the mode bits */ 236 attr->ia_mode &= ~S_IFMT; 237 if (!(attr->ia_valid & ATTR_MODE)) { 238 attr->ia_valid |= ATTR_MODE; 239 attr->ia_mode = S_IFREG; 240 } else { 241 attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG; 242 } 243 244 /* Now create the file and set attributes */ 245 resp->status = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len, 246 attr, newfhp, argp->createmode, 247 (u32 *)argp->verf, NULL, NULL); 248 return rpc_success; 249 } 250 251 /* 252 * Make directory. This operation is not idempotent. 253 */ 254 static __be32 255 nfsd3_proc_mkdir(struct svc_rqst *rqstp) 256 { 257 struct nfsd3_createargs *argp = rqstp->rq_argp; 258 struct nfsd3_diropres *resp = rqstp->rq_resp; 259 260 dprintk("nfsd: MKDIR(3) %s %.*s\n", 261 SVCFH_fmt(&argp->fh), 262 argp->len, 263 argp->name); 264 265 argp->attrs.ia_valid &= ~ATTR_SIZE; 266 fh_copy(&resp->dirfh, &argp->fh); 267 fh_init(&resp->fh, NFS3_FHSIZE); 268 resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, 269 &argp->attrs, S_IFDIR, 0, &resp->fh); 270 fh_unlock(&resp->dirfh); 271 return rpc_success; 272 } 273 274 static __be32 275 nfsd3_proc_symlink(struct svc_rqst *rqstp) 276 { 277 struct nfsd3_symlinkargs *argp = rqstp->rq_argp; 278 struct nfsd3_diropres *resp = rqstp->rq_resp; 279 280 if (argp->tlen == 0) { 281 resp->status = nfserr_inval; 282 goto out; 283 } 284 if (argp->tlen > NFS3_MAXPATHLEN) { 285 resp->status = nfserr_nametoolong; 286 goto out; 287 } 288 289 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first, 290 page_address(rqstp->rq_arg.pages[0]), 291 argp->tlen); 292 if (IS_ERR(argp->tname)) { 293 resp->status = nfserrno(PTR_ERR(argp->tname)); 294 goto out; 295 } 296 297 dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n", 298 SVCFH_fmt(&argp->ffh), 299 argp->flen, argp->fname, 300 argp->tlen, argp->tname); 301 302 fh_copy(&resp->dirfh, &argp->ffh); 303 fh_init(&resp->fh, NFS3_FHSIZE); 304 resp->status = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, 305 argp->flen, argp->tname, &resp->fh); 306 kfree(argp->tname); 307 out: 308 return rpc_success; 309 } 310 311 /* 312 * Make socket/fifo/device. 313 */ 314 static __be32 315 nfsd3_proc_mknod(struct svc_rqst *rqstp) 316 { 317 struct nfsd3_mknodargs *argp = rqstp->rq_argp; 318 struct nfsd3_diropres *resp = rqstp->rq_resp; 319 int type; 320 dev_t rdev = 0; 321 322 dprintk("nfsd: MKNOD(3) %s %.*s\n", 323 SVCFH_fmt(&argp->fh), 324 argp->len, 325 argp->name); 326 327 fh_copy(&resp->dirfh, &argp->fh); 328 fh_init(&resp->fh, NFS3_FHSIZE); 329 330 if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) { 331 rdev = MKDEV(argp->major, argp->minor); 332 if (MAJOR(rdev) != argp->major || 333 MINOR(rdev) != argp->minor) { 334 resp->status = nfserr_inval; 335 goto out; 336 } 337 } else if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) { 338 resp->status = nfserr_badtype; 339 goto out; 340 } 341 342 type = nfs3_ftypes[argp->ftype]; 343 resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, 344 &argp->attrs, type, rdev, &resp->fh); 345 fh_unlock(&resp->dirfh); 346 out: 347 return rpc_success; 348 } 349 350 /* 351 * Remove file/fifo/socket etc. 352 */ 353 static __be32 354 nfsd3_proc_remove(struct svc_rqst *rqstp) 355 { 356 struct nfsd3_diropargs *argp = rqstp->rq_argp; 357 struct nfsd3_attrstat *resp = rqstp->rq_resp; 358 359 dprintk("nfsd: REMOVE(3) %s %.*s\n", 360 SVCFH_fmt(&argp->fh), 361 argp->len, 362 argp->name); 363 364 /* Unlink. -S_IFDIR means file must not be a directory */ 365 fh_copy(&resp->fh, &argp->fh); 366 resp->status = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, 367 argp->name, argp->len); 368 fh_unlock(&resp->fh); 369 return rpc_success; 370 } 371 372 /* 373 * Remove a directory 374 */ 375 static __be32 376 nfsd3_proc_rmdir(struct svc_rqst *rqstp) 377 { 378 struct nfsd3_diropargs *argp = rqstp->rq_argp; 379 struct nfsd3_attrstat *resp = rqstp->rq_resp; 380 381 dprintk("nfsd: RMDIR(3) %s %.*s\n", 382 SVCFH_fmt(&argp->fh), 383 argp->len, 384 argp->name); 385 386 fh_copy(&resp->fh, &argp->fh); 387 resp->status = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, 388 argp->name, argp->len); 389 fh_unlock(&resp->fh); 390 return rpc_success; 391 } 392 393 static __be32 394 nfsd3_proc_rename(struct svc_rqst *rqstp) 395 { 396 struct nfsd3_renameargs *argp = rqstp->rq_argp; 397 struct nfsd3_renameres *resp = rqstp->rq_resp; 398 399 dprintk("nfsd: RENAME(3) %s %.*s ->\n", 400 SVCFH_fmt(&argp->ffh), 401 argp->flen, 402 argp->fname); 403 dprintk("nfsd: -> %s %.*s\n", 404 SVCFH_fmt(&argp->tfh), 405 argp->tlen, 406 argp->tname); 407 408 fh_copy(&resp->ffh, &argp->ffh); 409 fh_copy(&resp->tfh, &argp->tfh); 410 resp->status = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, 411 &resp->tfh, argp->tname, argp->tlen); 412 return rpc_success; 413 } 414 415 static __be32 416 nfsd3_proc_link(struct svc_rqst *rqstp) 417 { 418 struct nfsd3_linkargs *argp = rqstp->rq_argp; 419 struct nfsd3_linkres *resp = rqstp->rq_resp; 420 421 dprintk("nfsd: LINK(3) %s ->\n", 422 SVCFH_fmt(&argp->ffh)); 423 dprintk("nfsd: -> %s %.*s\n", 424 SVCFH_fmt(&argp->tfh), 425 argp->tlen, 426 argp->tname); 427 428 fh_copy(&resp->fh, &argp->ffh); 429 fh_copy(&resp->tfh, &argp->tfh); 430 resp->status = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, 431 &resp->fh); 432 return rpc_success; 433 } 434 435 static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp, 436 struct nfsd3_readdirres *resp, 437 u32 count) 438 { 439 struct xdr_buf *buf = &resp->dirlist; 440 struct xdr_stream *xdr = &resp->xdr; 441 442 count = clamp(count, (u32)(XDR_UNIT * 2), svc_max_payload(rqstp)); 443 444 memset(buf, 0, sizeof(*buf)); 445 446 /* Reserve room for the NULL ptr & eof flag (-2 words) */ 447 buf->buflen = count - XDR_UNIT * 2; 448 buf->pages = rqstp->rq_next_page; 449 rqstp->rq_next_page += (buf->buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; 450 451 /* This is xdr_init_encode(), but it assumes that 452 * the head kvec has already been consumed. */ 453 xdr_set_scratch_buffer(xdr, NULL, 0); 454 xdr->buf = buf; 455 xdr->page_ptr = buf->pages; 456 xdr->iov = NULL; 457 xdr->p = page_address(*buf->pages); 458 xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE); 459 xdr->rqst = NULL; 460 } 461 462 /* 463 * Read a portion of a directory. 464 */ 465 static __be32 466 nfsd3_proc_readdir(struct svc_rqst *rqstp) 467 { 468 struct nfsd3_readdirargs *argp = rqstp->rq_argp; 469 struct nfsd3_readdirres *resp = rqstp->rq_resp; 470 loff_t offset; 471 472 dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", 473 SVCFH_fmt(&argp->fh), 474 argp->count, (u32) argp->cookie); 475 476 nfsd3_init_dirlist_pages(rqstp, resp, argp->count); 477 478 fh_copy(&resp->fh, &argp->fh); 479 resp->common.err = nfs_ok; 480 resp->cookie_offset = 0; 481 resp->rqstp = rqstp; 482 offset = argp->cookie; 483 resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, 484 &resp->common, nfs3svc_encode_entry3); 485 memcpy(resp->verf, argp->verf, 8); 486 nfs3svc_encode_cookie3(resp, offset); 487 488 /* Recycle only pages that were part of the reply */ 489 rqstp->rq_next_page = resp->xdr.page_ptr + 1; 490 491 return rpc_success; 492 } 493 494 /* 495 * Read a portion of a directory, including file handles and attrs. 496 * For now, we choose to ignore the dircount parameter. 497 */ 498 static __be32 499 nfsd3_proc_readdirplus(struct svc_rqst *rqstp) 500 { 501 struct nfsd3_readdirargs *argp = rqstp->rq_argp; 502 struct nfsd3_readdirres *resp = rqstp->rq_resp; 503 loff_t offset; 504 505 dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", 506 SVCFH_fmt(&argp->fh), 507 argp->count, (u32) argp->cookie); 508 509 nfsd3_init_dirlist_pages(rqstp, resp, argp->count); 510 511 fh_copy(&resp->fh, &argp->fh); 512 resp->common.err = nfs_ok; 513 resp->cookie_offset = 0; 514 resp->rqstp = rqstp; 515 offset = argp->cookie; 516 517 resp->status = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP); 518 if (resp->status != nfs_ok) 519 goto out; 520 521 if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) { 522 resp->status = nfserr_notsupp; 523 goto out; 524 } 525 526 resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, 527 &resp->common, nfs3svc_encode_entryplus3); 528 memcpy(resp->verf, argp->verf, 8); 529 nfs3svc_encode_cookie3(resp, offset); 530 531 /* Recycle only pages that were part of the reply */ 532 rqstp->rq_next_page = resp->xdr.page_ptr + 1; 533 534 out: 535 return rpc_success; 536 } 537 538 /* 539 * Get file system stats 540 */ 541 static __be32 542 nfsd3_proc_fsstat(struct svc_rqst *rqstp) 543 { 544 struct nfsd_fhandle *argp = rqstp->rq_argp; 545 struct nfsd3_fsstatres *resp = rqstp->rq_resp; 546 547 dprintk("nfsd: FSSTAT(3) %s\n", 548 SVCFH_fmt(&argp->fh)); 549 550 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0); 551 fh_put(&argp->fh); 552 return rpc_success; 553 } 554 555 /* 556 * Get file system info 557 */ 558 static __be32 559 nfsd3_proc_fsinfo(struct svc_rqst *rqstp) 560 { 561 struct nfsd_fhandle *argp = rqstp->rq_argp; 562 struct nfsd3_fsinfores *resp = rqstp->rq_resp; 563 u32 max_blocksize = svc_max_payload(rqstp); 564 565 dprintk("nfsd: FSINFO(3) %s\n", 566 SVCFH_fmt(&argp->fh)); 567 568 resp->f_rtmax = max_blocksize; 569 resp->f_rtpref = max_blocksize; 570 resp->f_rtmult = PAGE_SIZE; 571 resp->f_wtmax = max_blocksize; 572 resp->f_wtpref = max_blocksize; 573 resp->f_wtmult = PAGE_SIZE; 574 resp->f_dtpref = max_blocksize; 575 resp->f_maxfilesize = ~(u32) 0; 576 resp->f_properties = NFS3_FSF_DEFAULT; 577 578 resp->status = fh_verify(rqstp, &argp->fh, 0, 579 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); 580 581 /* Check special features of the file system. May request 582 * different read/write sizes for file systems known to have 583 * problems with large blocks */ 584 if (resp->status == nfs_ok) { 585 struct super_block *sb = argp->fh.fh_dentry->d_sb; 586 587 /* Note that we don't care for remote fs's here */ 588 if (sb->s_magic == MSDOS_SUPER_MAGIC) { 589 resp->f_properties = NFS3_FSF_BILLYBOY; 590 } 591 resp->f_maxfilesize = sb->s_maxbytes; 592 } 593 594 fh_put(&argp->fh); 595 return rpc_success; 596 } 597 598 /* 599 * Get pathconf info for the specified file 600 */ 601 static __be32 602 nfsd3_proc_pathconf(struct svc_rqst *rqstp) 603 { 604 struct nfsd_fhandle *argp = rqstp->rq_argp; 605 struct nfsd3_pathconfres *resp = rqstp->rq_resp; 606 607 dprintk("nfsd: PATHCONF(3) %s\n", 608 SVCFH_fmt(&argp->fh)); 609 610 /* Set default pathconf */ 611 resp->p_link_max = 255; /* at least */ 612 resp->p_name_max = 255; /* at least */ 613 resp->p_no_trunc = 0; 614 resp->p_chown_restricted = 1; 615 resp->p_case_insensitive = 0; 616 resp->p_case_preserving = 1; 617 618 resp->status = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP); 619 620 if (resp->status == nfs_ok) { 621 struct super_block *sb = argp->fh.fh_dentry->d_sb; 622 623 /* Note that we don't care for remote fs's here */ 624 switch (sb->s_magic) { 625 case EXT2_SUPER_MAGIC: 626 resp->p_link_max = EXT2_LINK_MAX; 627 resp->p_name_max = EXT2_NAME_LEN; 628 break; 629 case MSDOS_SUPER_MAGIC: 630 resp->p_case_insensitive = 1; 631 resp->p_case_preserving = 0; 632 break; 633 } 634 } 635 636 fh_put(&argp->fh); 637 return rpc_success; 638 } 639 640 /* 641 * Commit a file (range) to stable storage. 642 */ 643 static __be32 644 nfsd3_proc_commit(struct svc_rqst *rqstp) 645 { 646 struct nfsd3_commitargs *argp = rqstp->rq_argp; 647 struct nfsd3_commitres *resp = rqstp->rq_resp; 648 649 dprintk("nfsd: COMMIT(3) %s %u@%Lu\n", 650 SVCFH_fmt(&argp->fh), 651 argp->count, 652 (unsigned long long) argp->offset); 653 654 if (argp->offset > NFS_OFFSET_MAX) { 655 resp->status = nfserr_inval; 656 goto out; 657 } 658 659 fh_copy(&resp->fh, &argp->fh); 660 resp->status = nfsd_commit(rqstp, &resp->fh, argp->offset, 661 argp->count, resp->verf); 662 out: 663 return rpc_success; 664 } 665 666 667 /* 668 * NFSv3 Server procedures. 669 * Only the results of non-idempotent operations are cached. 670 */ 671 #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat 672 #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat 673 #define nfsd3_mkdirargs nfsd3_createargs 674 #define nfsd3_readdirplusargs nfsd3_readdirargs 675 #define nfsd3_fhandleargs nfsd_fhandle 676 #define nfsd3_attrstatres nfsd3_attrstat 677 #define nfsd3_wccstatres nfsd3_attrstat 678 #define nfsd3_createres nfsd3_diropres 679 680 #define ST 1 /* status*/ 681 #define FH 17 /* filehandle with length */ 682 #define AT 21 /* attributes */ 683 #define pAT (1+AT) /* post attributes - conditional */ 684 #define WC (7+pAT) /* WCC attributes */ 685 686 static const struct svc_procedure nfsd_procedures3[22] = { 687 [NFS3PROC_NULL] = { 688 .pc_func = nfsd3_proc_null, 689 .pc_decode = nfssvc_decode_voidarg, 690 .pc_encode = nfssvc_encode_voidres, 691 .pc_argsize = sizeof(struct nfsd_voidargs), 692 .pc_ressize = sizeof(struct nfsd_voidres), 693 .pc_cachetype = RC_NOCACHE, 694 .pc_xdrressize = ST, 695 .pc_name = "NULL", 696 }, 697 [NFS3PROC_GETATTR] = { 698 .pc_func = nfsd3_proc_getattr, 699 .pc_decode = nfs3svc_decode_fhandleargs, 700 .pc_encode = nfs3svc_encode_getattrres, 701 .pc_release = nfs3svc_release_fhandle, 702 .pc_argsize = sizeof(struct nfsd_fhandle), 703 .pc_ressize = sizeof(struct nfsd3_attrstatres), 704 .pc_cachetype = RC_NOCACHE, 705 .pc_xdrressize = ST+AT, 706 .pc_name = "GETATTR", 707 }, 708 [NFS3PROC_SETATTR] = { 709 .pc_func = nfsd3_proc_setattr, 710 .pc_decode = nfs3svc_decode_sattrargs, 711 .pc_encode = nfs3svc_encode_wccstatres, 712 .pc_release = nfs3svc_release_fhandle, 713 .pc_argsize = sizeof(struct nfsd3_sattrargs), 714 .pc_ressize = sizeof(struct nfsd3_wccstatres), 715 .pc_cachetype = RC_REPLBUFF, 716 .pc_xdrressize = ST+WC, 717 .pc_name = "SETATTR", 718 }, 719 [NFS3PROC_LOOKUP] = { 720 .pc_func = nfsd3_proc_lookup, 721 .pc_decode = nfs3svc_decode_diropargs, 722 .pc_encode = nfs3svc_encode_lookupres, 723 .pc_release = nfs3svc_release_fhandle2, 724 .pc_argsize = sizeof(struct nfsd3_diropargs), 725 .pc_ressize = sizeof(struct nfsd3_diropres), 726 .pc_cachetype = RC_NOCACHE, 727 .pc_xdrressize = ST+FH+pAT+pAT, 728 .pc_name = "LOOKUP", 729 }, 730 [NFS3PROC_ACCESS] = { 731 .pc_func = nfsd3_proc_access, 732 .pc_decode = nfs3svc_decode_accessargs, 733 .pc_encode = nfs3svc_encode_accessres, 734 .pc_release = nfs3svc_release_fhandle, 735 .pc_argsize = sizeof(struct nfsd3_accessargs), 736 .pc_ressize = sizeof(struct nfsd3_accessres), 737 .pc_cachetype = RC_NOCACHE, 738 .pc_xdrressize = ST+pAT+1, 739 .pc_name = "ACCESS", 740 }, 741 [NFS3PROC_READLINK] = { 742 .pc_func = nfsd3_proc_readlink, 743 .pc_decode = nfs3svc_decode_fhandleargs, 744 .pc_encode = nfs3svc_encode_readlinkres, 745 .pc_release = nfs3svc_release_fhandle, 746 .pc_argsize = sizeof(struct nfsd_fhandle), 747 .pc_ressize = sizeof(struct nfsd3_readlinkres), 748 .pc_cachetype = RC_NOCACHE, 749 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4, 750 .pc_name = "READLINK", 751 }, 752 [NFS3PROC_READ] = { 753 .pc_func = nfsd3_proc_read, 754 .pc_decode = nfs3svc_decode_readargs, 755 .pc_encode = nfs3svc_encode_readres, 756 .pc_release = nfs3svc_release_fhandle, 757 .pc_argsize = sizeof(struct nfsd3_readargs), 758 .pc_ressize = sizeof(struct nfsd3_readres), 759 .pc_cachetype = RC_NOCACHE, 760 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4, 761 .pc_name = "READ", 762 }, 763 [NFS3PROC_WRITE] = { 764 .pc_func = nfsd3_proc_write, 765 .pc_decode = nfs3svc_decode_writeargs, 766 .pc_encode = nfs3svc_encode_writeres, 767 .pc_release = nfs3svc_release_fhandle, 768 .pc_argsize = sizeof(struct nfsd3_writeargs), 769 .pc_ressize = sizeof(struct nfsd3_writeres), 770 .pc_cachetype = RC_REPLBUFF, 771 .pc_xdrressize = ST+WC+4, 772 .pc_name = "WRITE", 773 }, 774 [NFS3PROC_CREATE] = { 775 .pc_func = nfsd3_proc_create, 776 .pc_decode = nfs3svc_decode_createargs, 777 .pc_encode = nfs3svc_encode_createres, 778 .pc_release = nfs3svc_release_fhandle2, 779 .pc_argsize = sizeof(struct nfsd3_createargs), 780 .pc_ressize = sizeof(struct nfsd3_createres), 781 .pc_cachetype = RC_REPLBUFF, 782 .pc_xdrressize = ST+(1+FH+pAT)+WC, 783 .pc_name = "CREATE", 784 }, 785 [NFS3PROC_MKDIR] = { 786 .pc_func = nfsd3_proc_mkdir, 787 .pc_decode = nfs3svc_decode_mkdirargs, 788 .pc_encode = nfs3svc_encode_createres, 789 .pc_release = nfs3svc_release_fhandle2, 790 .pc_argsize = sizeof(struct nfsd3_mkdirargs), 791 .pc_ressize = sizeof(struct nfsd3_createres), 792 .pc_cachetype = RC_REPLBUFF, 793 .pc_xdrressize = ST+(1+FH+pAT)+WC, 794 .pc_name = "MKDIR", 795 }, 796 [NFS3PROC_SYMLINK] = { 797 .pc_func = nfsd3_proc_symlink, 798 .pc_decode = nfs3svc_decode_symlinkargs, 799 .pc_encode = nfs3svc_encode_createres, 800 .pc_release = nfs3svc_release_fhandle2, 801 .pc_argsize = sizeof(struct nfsd3_symlinkargs), 802 .pc_ressize = sizeof(struct nfsd3_createres), 803 .pc_cachetype = RC_REPLBUFF, 804 .pc_xdrressize = ST+(1+FH+pAT)+WC, 805 .pc_name = "SYMLINK", 806 }, 807 [NFS3PROC_MKNOD] = { 808 .pc_func = nfsd3_proc_mknod, 809 .pc_decode = nfs3svc_decode_mknodargs, 810 .pc_encode = nfs3svc_encode_createres, 811 .pc_release = nfs3svc_release_fhandle2, 812 .pc_argsize = sizeof(struct nfsd3_mknodargs), 813 .pc_ressize = sizeof(struct nfsd3_createres), 814 .pc_cachetype = RC_REPLBUFF, 815 .pc_xdrressize = ST+(1+FH+pAT)+WC, 816 .pc_name = "MKNOD", 817 }, 818 [NFS3PROC_REMOVE] = { 819 .pc_func = nfsd3_proc_remove, 820 .pc_decode = nfs3svc_decode_diropargs, 821 .pc_encode = nfs3svc_encode_wccstatres, 822 .pc_release = nfs3svc_release_fhandle, 823 .pc_argsize = sizeof(struct nfsd3_diropargs), 824 .pc_ressize = sizeof(struct nfsd3_wccstatres), 825 .pc_cachetype = RC_REPLBUFF, 826 .pc_xdrressize = ST+WC, 827 .pc_name = "REMOVE", 828 }, 829 [NFS3PROC_RMDIR] = { 830 .pc_func = nfsd3_proc_rmdir, 831 .pc_decode = nfs3svc_decode_diropargs, 832 .pc_encode = nfs3svc_encode_wccstatres, 833 .pc_release = nfs3svc_release_fhandle, 834 .pc_argsize = sizeof(struct nfsd3_diropargs), 835 .pc_ressize = sizeof(struct nfsd3_wccstatres), 836 .pc_cachetype = RC_REPLBUFF, 837 .pc_xdrressize = ST+WC, 838 .pc_name = "RMDIR", 839 }, 840 [NFS3PROC_RENAME] = { 841 .pc_func = nfsd3_proc_rename, 842 .pc_decode = nfs3svc_decode_renameargs, 843 .pc_encode = nfs3svc_encode_renameres, 844 .pc_release = nfs3svc_release_fhandle2, 845 .pc_argsize = sizeof(struct nfsd3_renameargs), 846 .pc_ressize = sizeof(struct nfsd3_renameres), 847 .pc_cachetype = RC_REPLBUFF, 848 .pc_xdrressize = ST+WC+WC, 849 .pc_name = "RENAME", 850 }, 851 [NFS3PROC_LINK] = { 852 .pc_func = nfsd3_proc_link, 853 .pc_decode = nfs3svc_decode_linkargs, 854 .pc_encode = nfs3svc_encode_linkres, 855 .pc_release = nfs3svc_release_fhandle2, 856 .pc_argsize = sizeof(struct nfsd3_linkargs), 857 .pc_ressize = sizeof(struct nfsd3_linkres), 858 .pc_cachetype = RC_REPLBUFF, 859 .pc_xdrressize = ST+pAT+WC, 860 .pc_name = "LINK", 861 }, 862 [NFS3PROC_READDIR] = { 863 .pc_func = nfsd3_proc_readdir, 864 .pc_decode = nfs3svc_decode_readdirargs, 865 .pc_encode = nfs3svc_encode_readdirres, 866 .pc_release = nfs3svc_release_fhandle, 867 .pc_argsize = sizeof(struct nfsd3_readdirargs), 868 .pc_ressize = sizeof(struct nfsd3_readdirres), 869 .pc_cachetype = RC_NOCACHE, 870 .pc_name = "READDIR", 871 }, 872 [NFS3PROC_READDIRPLUS] = { 873 .pc_func = nfsd3_proc_readdirplus, 874 .pc_decode = nfs3svc_decode_readdirplusargs, 875 .pc_encode = nfs3svc_encode_readdirres, 876 .pc_release = nfs3svc_release_fhandle, 877 .pc_argsize = sizeof(struct nfsd3_readdirplusargs), 878 .pc_ressize = sizeof(struct nfsd3_readdirres), 879 .pc_cachetype = RC_NOCACHE, 880 .pc_name = "READDIRPLUS", 881 }, 882 [NFS3PROC_FSSTAT] = { 883 .pc_func = nfsd3_proc_fsstat, 884 .pc_decode = nfs3svc_decode_fhandleargs, 885 .pc_encode = nfs3svc_encode_fsstatres, 886 .pc_argsize = sizeof(struct nfsd3_fhandleargs), 887 .pc_ressize = sizeof(struct nfsd3_fsstatres), 888 .pc_cachetype = RC_NOCACHE, 889 .pc_xdrressize = ST+pAT+2*6+1, 890 .pc_name = "FSSTAT", 891 }, 892 [NFS3PROC_FSINFO] = { 893 .pc_func = nfsd3_proc_fsinfo, 894 .pc_decode = nfs3svc_decode_fhandleargs, 895 .pc_encode = nfs3svc_encode_fsinfores, 896 .pc_argsize = sizeof(struct nfsd3_fhandleargs), 897 .pc_ressize = sizeof(struct nfsd3_fsinfores), 898 .pc_cachetype = RC_NOCACHE, 899 .pc_xdrressize = ST+pAT+12, 900 .pc_name = "FSINFO", 901 }, 902 [NFS3PROC_PATHCONF] = { 903 .pc_func = nfsd3_proc_pathconf, 904 .pc_decode = nfs3svc_decode_fhandleargs, 905 .pc_encode = nfs3svc_encode_pathconfres, 906 .pc_argsize = sizeof(struct nfsd3_fhandleargs), 907 .pc_ressize = sizeof(struct nfsd3_pathconfres), 908 .pc_cachetype = RC_NOCACHE, 909 .pc_xdrressize = ST+pAT+6, 910 .pc_name = "PATHCONF", 911 }, 912 [NFS3PROC_COMMIT] = { 913 .pc_func = nfsd3_proc_commit, 914 .pc_decode = nfs3svc_decode_commitargs, 915 .pc_encode = nfs3svc_encode_commitres, 916 .pc_release = nfs3svc_release_fhandle, 917 .pc_argsize = sizeof(struct nfsd3_commitargs), 918 .pc_ressize = sizeof(struct nfsd3_commitres), 919 .pc_cachetype = RC_NOCACHE, 920 .pc_xdrressize = ST+WC+2, 921 .pc_name = "COMMIT", 922 }, 923 }; 924 925 static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures3)]; 926 const struct svc_version nfsd_version3 = { 927 .vs_vers = 3, 928 .vs_nproc = 22, 929 .vs_proc = nfsd_procedures3, 930 .vs_dispatch = nfsd_dispatch, 931 .vs_count = nfsd_count3, 932 .vs_xdrsize = NFS3_SVC_XDRSIZE, 933 }; 934