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 if (!nvecs) { 206 resp->status = nfserr_io; 207 goto out; 208 } 209 resp->status = nfsd_write(rqstp, &resp->fh, argp->offset, 210 rqstp->rq_vec, nvecs, &cnt, 211 resp->committed, resp->verf); 212 resp->count = cnt; 213 out: 214 return rpc_success; 215 } 216 217 /* 218 * With NFSv3, CREATE processing is a lot easier than with NFSv2. 219 * At least in theory; we'll see how it fares in practice when the 220 * first reports about SunOS compatibility problems start to pour in... 221 */ 222 static __be32 223 nfsd3_proc_create(struct svc_rqst *rqstp) 224 { 225 struct nfsd3_createargs *argp = rqstp->rq_argp; 226 struct nfsd3_diropres *resp = rqstp->rq_resp; 227 svc_fh *dirfhp, *newfhp = NULL; 228 struct iattr *attr; 229 230 dprintk("nfsd: CREATE(3) %s %.*s\n", 231 SVCFH_fmt(&argp->fh), 232 argp->len, 233 argp->name); 234 235 dirfhp = fh_copy(&resp->dirfh, &argp->fh); 236 newfhp = fh_init(&resp->fh, NFS3_FHSIZE); 237 attr = &argp->attrs; 238 239 /* Unfudge the mode bits */ 240 attr->ia_mode &= ~S_IFMT; 241 if (!(attr->ia_valid & ATTR_MODE)) { 242 attr->ia_valid |= ATTR_MODE; 243 attr->ia_mode = S_IFREG; 244 } else { 245 attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG; 246 } 247 248 /* Now create the file and set attributes */ 249 resp->status = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len, 250 attr, newfhp, argp->createmode, 251 (u32 *)argp->verf, NULL, NULL); 252 return rpc_success; 253 } 254 255 /* 256 * Make directory. This operation is not idempotent. 257 */ 258 static __be32 259 nfsd3_proc_mkdir(struct svc_rqst *rqstp) 260 { 261 struct nfsd3_createargs *argp = rqstp->rq_argp; 262 struct nfsd3_diropres *resp = rqstp->rq_resp; 263 264 dprintk("nfsd: MKDIR(3) %s %.*s\n", 265 SVCFH_fmt(&argp->fh), 266 argp->len, 267 argp->name); 268 269 argp->attrs.ia_valid &= ~ATTR_SIZE; 270 fh_copy(&resp->dirfh, &argp->fh); 271 fh_init(&resp->fh, NFS3_FHSIZE); 272 resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, 273 &argp->attrs, S_IFDIR, 0, &resp->fh); 274 fh_unlock(&resp->dirfh); 275 return rpc_success; 276 } 277 278 static __be32 279 nfsd3_proc_symlink(struct svc_rqst *rqstp) 280 { 281 struct nfsd3_symlinkargs *argp = rqstp->rq_argp; 282 struct nfsd3_diropres *resp = rqstp->rq_resp; 283 284 if (argp->tlen == 0) { 285 resp->status = nfserr_inval; 286 goto out; 287 } 288 if (argp->tlen > NFS3_MAXPATHLEN) { 289 resp->status = nfserr_nametoolong; 290 goto out; 291 } 292 293 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first, 294 page_address(rqstp->rq_arg.pages[0]), 295 argp->tlen); 296 if (IS_ERR(argp->tname)) { 297 resp->status = nfserrno(PTR_ERR(argp->tname)); 298 goto out; 299 } 300 301 dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n", 302 SVCFH_fmt(&argp->ffh), 303 argp->flen, argp->fname, 304 argp->tlen, argp->tname); 305 306 fh_copy(&resp->dirfh, &argp->ffh); 307 fh_init(&resp->fh, NFS3_FHSIZE); 308 resp->status = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, 309 argp->flen, argp->tname, &resp->fh); 310 kfree(argp->tname); 311 out: 312 return rpc_success; 313 } 314 315 /* 316 * Make socket/fifo/device. 317 */ 318 static __be32 319 nfsd3_proc_mknod(struct svc_rqst *rqstp) 320 { 321 struct nfsd3_mknodargs *argp = rqstp->rq_argp; 322 struct nfsd3_diropres *resp = rqstp->rq_resp; 323 int type; 324 dev_t rdev = 0; 325 326 dprintk("nfsd: MKNOD(3) %s %.*s\n", 327 SVCFH_fmt(&argp->fh), 328 argp->len, 329 argp->name); 330 331 fh_copy(&resp->dirfh, &argp->fh); 332 fh_init(&resp->fh, NFS3_FHSIZE); 333 334 if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) { 335 rdev = MKDEV(argp->major, argp->minor); 336 if (MAJOR(rdev) != argp->major || 337 MINOR(rdev) != argp->minor) { 338 resp->status = nfserr_inval; 339 goto out; 340 } 341 } else if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) { 342 resp->status = nfserr_badtype; 343 goto out; 344 } 345 346 type = nfs3_ftypes[argp->ftype]; 347 resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, 348 &argp->attrs, type, rdev, &resp->fh); 349 fh_unlock(&resp->dirfh); 350 out: 351 return rpc_success; 352 } 353 354 /* 355 * Remove file/fifo/socket etc. 356 */ 357 static __be32 358 nfsd3_proc_remove(struct svc_rqst *rqstp) 359 { 360 struct nfsd3_diropargs *argp = rqstp->rq_argp; 361 struct nfsd3_attrstat *resp = rqstp->rq_resp; 362 363 dprintk("nfsd: REMOVE(3) %s %.*s\n", 364 SVCFH_fmt(&argp->fh), 365 argp->len, 366 argp->name); 367 368 /* Unlink. -S_IFDIR means file must not be a directory */ 369 fh_copy(&resp->fh, &argp->fh); 370 resp->status = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, 371 argp->name, argp->len); 372 fh_unlock(&resp->fh); 373 return rpc_success; 374 } 375 376 /* 377 * Remove a directory 378 */ 379 static __be32 380 nfsd3_proc_rmdir(struct svc_rqst *rqstp) 381 { 382 struct nfsd3_diropargs *argp = rqstp->rq_argp; 383 struct nfsd3_attrstat *resp = rqstp->rq_resp; 384 385 dprintk("nfsd: RMDIR(3) %s %.*s\n", 386 SVCFH_fmt(&argp->fh), 387 argp->len, 388 argp->name); 389 390 fh_copy(&resp->fh, &argp->fh); 391 resp->status = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, 392 argp->name, argp->len); 393 fh_unlock(&resp->fh); 394 return rpc_success; 395 } 396 397 static __be32 398 nfsd3_proc_rename(struct svc_rqst *rqstp) 399 { 400 struct nfsd3_renameargs *argp = rqstp->rq_argp; 401 struct nfsd3_renameres *resp = rqstp->rq_resp; 402 403 dprintk("nfsd: RENAME(3) %s %.*s ->\n", 404 SVCFH_fmt(&argp->ffh), 405 argp->flen, 406 argp->fname); 407 dprintk("nfsd: -> %s %.*s\n", 408 SVCFH_fmt(&argp->tfh), 409 argp->tlen, 410 argp->tname); 411 412 fh_copy(&resp->ffh, &argp->ffh); 413 fh_copy(&resp->tfh, &argp->tfh); 414 resp->status = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, 415 &resp->tfh, argp->tname, argp->tlen); 416 return rpc_success; 417 } 418 419 static __be32 420 nfsd3_proc_link(struct svc_rqst *rqstp) 421 { 422 struct nfsd3_linkargs *argp = rqstp->rq_argp; 423 struct nfsd3_linkres *resp = rqstp->rq_resp; 424 425 dprintk("nfsd: LINK(3) %s ->\n", 426 SVCFH_fmt(&argp->ffh)); 427 dprintk("nfsd: -> %s %.*s\n", 428 SVCFH_fmt(&argp->tfh), 429 argp->tlen, 430 argp->tname); 431 432 fh_copy(&resp->fh, &argp->ffh); 433 fh_copy(&resp->tfh, &argp->tfh); 434 resp->status = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, 435 &resp->fh); 436 return rpc_success; 437 } 438 439 static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp, 440 struct nfsd3_readdirres *resp, 441 u32 count) 442 { 443 struct xdr_buf *buf = &resp->dirlist; 444 struct xdr_stream *xdr = &resp->xdr; 445 446 count = clamp(count, (u32)(XDR_UNIT * 2), svc_max_payload(rqstp)); 447 448 memset(buf, 0, sizeof(*buf)); 449 450 /* Reserve room for the NULL ptr & eof flag (-2 words) */ 451 buf->buflen = count - XDR_UNIT * 2; 452 buf->pages = rqstp->rq_next_page; 453 rqstp->rq_next_page += (buf->buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; 454 455 /* This is xdr_init_encode(), but it assumes that 456 * the head kvec has already been consumed. */ 457 xdr_set_scratch_buffer(xdr, NULL, 0); 458 xdr->buf = buf; 459 xdr->page_ptr = buf->pages; 460 xdr->iov = NULL; 461 xdr->p = page_address(*buf->pages); 462 xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE); 463 xdr->rqst = NULL; 464 } 465 466 /* 467 * Read a portion of a directory. 468 */ 469 static __be32 470 nfsd3_proc_readdir(struct svc_rqst *rqstp) 471 { 472 struct nfsd3_readdirargs *argp = rqstp->rq_argp; 473 struct nfsd3_readdirres *resp = rqstp->rq_resp; 474 loff_t offset; 475 476 dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", 477 SVCFH_fmt(&argp->fh), 478 argp->count, (u32) argp->cookie); 479 480 nfsd3_init_dirlist_pages(rqstp, resp, argp->count); 481 482 fh_copy(&resp->fh, &argp->fh); 483 resp->common.err = nfs_ok; 484 resp->cookie_offset = 0; 485 resp->rqstp = rqstp; 486 offset = argp->cookie; 487 resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, 488 &resp->common, nfs3svc_encode_entry3); 489 memcpy(resp->verf, argp->verf, 8); 490 nfs3svc_encode_cookie3(resp, offset); 491 492 /* Recycle only pages that were part of the reply */ 493 rqstp->rq_next_page = resp->xdr.page_ptr + 1; 494 495 return rpc_success; 496 } 497 498 /* 499 * Read a portion of a directory, including file handles and attrs. 500 * For now, we choose to ignore the dircount parameter. 501 */ 502 static __be32 503 nfsd3_proc_readdirplus(struct svc_rqst *rqstp) 504 { 505 struct nfsd3_readdirargs *argp = rqstp->rq_argp; 506 struct nfsd3_readdirres *resp = rqstp->rq_resp; 507 loff_t offset; 508 509 dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", 510 SVCFH_fmt(&argp->fh), 511 argp->count, (u32) argp->cookie); 512 513 nfsd3_init_dirlist_pages(rqstp, resp, argp->count); 514 515 fh_copy(&resp->fh, &argp->fh); 516 resp->common.err = nfs_ok; 517 resp->cookie_offset = 0; 518 resp->rqstp = rqstp; 519 offset = argp->cookie; 520 521 resp->status = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP); 522 if (resp->status != nfs_ok) 523 goto out; 524 525 if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) { 526 resp->status = nfserr_notsupp; 527 goto out; 528 } 529 530 resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, 531 &resp->common, nfs3svc_encode_entryplus3); 532 memcpy(resp->verf, argp->verf, 8); 533 nfs3svc_encode_cookie3(resp, offset); 534 535 /* Recycle only pages that were part of the reply */ 536 rqstp->rq_next_page = resp->xdr.page_ptr + 1; 537 538 out: 539 return rpc_success; 540 } 541 542 /* 543 * Get file system stats 544 */ 545 static __be32 546 nfsd3_proc_fsstat(struct svc_rqst *rqstp) 547 { 548 struct nfsd_fhandle *argp = rqstp->rq_argp; 549 struct nfsd3_fsstatres *resp = rqstp->rq_resp; 550 551 dprintk("nfsd: FSSTAT(3) %s\n", 552 SVCFH_fmt(&argp->fh)); 553 554 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0); 555 fh_put(&argp->fh); 556 return rpc_success; 557 } 558 559 /* 560 * Get file system info 561 */ 562 static __be32 563 nfsd3_proc_fsinfo(struct svc_rqst *rqstp) 564 { 565 struct nfsd_fhandle *argp = rqstp->rq_argp; 566 struct nfsd3_fsinfores *resp = rqstp->rq_resp; 567 u32 max_blocksize = svc_max_payload(rqstp); 568 569 dprintk("nfsd: FSINFO(3) %s\n", 570 SVCFH_fmt(&argp->fh)); 571 572 resp->f_rtmax = max_blocksize; 573 resp->f_rtpref = max_blocksize; 574 resp->f_rtmult = PAGE_SIZE; 575 resp->f_wtmax = max_blocksize; 576 resp->f_wtpref = max_blocksize; 577 resp->f_wtmult = PAGE_SIZE; 578 resp->f_dtpref = max_blocksize; 579 resp->f_maxfilesize = ~(u32) 0; 580 resp->f_properties = NFS3_FSF_DEFAULT; 581 582 resp->status = fh_verify(rqstp, &argp->fh, 0, 583 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); 584 585 /* Check special features of the file system. May request 586 * different read/write sizes for file systems known to have 587 * problems with large blocks */ 588 if (resp->status == nfs_ok) { 589 struct super_block *sb = argp->fh.fh_dentry->d_sb; 590 591 /* Note that we don't care for remote fs's here */ 592 if (sb->s_magic == MSDOS_SUPER_MAGIC) { 593 resp->f_properties = NFS3_FSF_BILLYBOY; 594 } 595 resp->f_maxfilesize = sb->s_maxbytes; 596 } 597 598 fh_put(&argp->fh); 599 return rpc_success; 600 } 601 602 /* 603 * Get pathconf info for the specified file 604 */ 605 static __be32 606 nfsd3_proc_pathconf(struct svc_rqst *rqstp) 607 { 608 struct nfsd_fhandle *argp = rqstp->rq_argp; 609 struct nfsd3_pathconfres *resp = rqstp->rq_resp; 610 611 dprintk("nfsd: PATHCONF(3) %s\n", 612 SVCFH_fmt(&argp->fh)); 613 614 /* Set default pathconf */ 615 resp->p_link_max = 255; /* at least */ 616 resp->p_name_max = 255; /* at least */ 617 resp->p_no_trunc = 0; 618 resp->p_chown_restricted = 1; 619 resp->p_case_insensitive = 0; 620 resp->p_case_preserving = 1; 621 622 resp->status = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP); 623 624 if (resp->status == nfs_ok) { 625 struct super_block *sb = argp->fh.fh_dentry->d_sb; 626 627 /* Note that we don't care for remote fs's here */ 628 switch (sb->s_magic) { 629 case EXT2_SUPER_MAGIC: 630 resp->p_link_max = EXT2_LINK_MAX; 631 resp->p_name_max = EXT2_NAME_LEN; 632 break; 633 case MSDOS_SUPER_MAGIC: 634 resp->p_case_insensitive = 1; 635 resp->p_case_preserving = 0; 636 break; 637 } 638 } 639 640 fh_put(&argp->fh); 641 return rpc_success; 642 } 643 644 /* 645 * Commit a file (range) to stable storage. 646 */ 647 static __be32 648 nfsd3_proc_commit(struct svc_rqst *rqstp) 649 { 650 struct nfsd3_commitargs *argp = rqstp->rq_argp; 651 struct nfsd3_commitres *resp = rqstp->rq_resp; 652 653 dprintk("nfsd: COMMIT(3) %s %u@%Lu\n", 654 SVCFH_fmt(&argp->fh), 655 argp->count, 656 (unsigned long long) argp->offset); 657 658 if (argp->offset > NFS_OFFSET_MAX) { 659 resp->status = nfserr_inval; 660 goto out; 661 } 662 663 fh_copy(&resp->fh, &argp->fh); 664 resp->status = nfsd_commit(rqstp, &resp->fh, argp->offset, 665 argp->count, resp->verf); 666 out: 667 return rpc_success; 668 } 669 670 671 /* 672 * NFSv3 Server procedures. 673 * Only the results of non-idempotent operations are cached. 674 */ 675 #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat 676 #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat 677 #define nfsd3_mkdirargs nfsd3_createargs 678 #define nfsd3_readdirplusargs nfsd3_readdirargs 679 #define nfsd3_fhandleargs nfsd_fhandle 680 #define nfsd3_attrstatres nfsd3_attrstat 681 #define nfsd3_wccstatres nfsd3_attrstat 682 #define nfsd3_createres nfsd3_diropres 683 684 #define ST 1 /* status*/ 685 #define FH 17 /* filehandle with length */ 686 #define AT 21 /* attributes */ 687 #define pAT (1+AT) /* post attributes - conditional */ 688 #define WC (7+pAT) /* WCC attributes */ 689 690 static const struct svc_procedure nfsd_procedures3[22] = { 691 [NFS3PROC_NULL] = { 692 .pc_func = nfsd3_proc_null, 693 .pc_decode = nfssvc_decode_voidarg, 694 .pc_encode = nfssvc_encode_voidres, 695 .pc_argsize = sizeof(struct nfsd_voidargs), 696 .pc_ressize = sizeof(struct nfsd_voidres), 697 .pc_cachetype = RC_NOCACHE, 698 .pc_xdrressize = ST, 699 .pc_name = "NULL", 700 }, 701 [NFS3PROC_GETATTR] = { 702 .pc_func = nfsd3_proc_getattr, 703 .pc_decode = nfs3svc_decode_fhandleargs, 704 .pc_encode = nfs3svc_encode_getattrres, 705 .pc_release = nfs3svc_release_fhandle, 706 .pc_argsize = sizeof(struct nfsd_fhandle), 707 .pc_ressize = sizeof(struct nfsd3_attrstatres), 708 .pc_cachetype = RC_NOCACHE, 709 .pc_xdrressize = ST+AT, 710 .pc_name = "GETATTR", 711 }, 712 [NFS3PROC_SETATTR] = { 713 .pc_func = nfsd3_proc_setattr, 714 .pc_decode = nfs3svc_decode_sattrargs, 715 .pc_encode = nfs3svc_encode_wccstatres, 716 .pc_release = nfs3svc_release_fhandle, 717 .pc_argsize = sizeof(struct nfsd3_sattrargs), 718 .pc_ressize = sizeof(struct nfsd3_wccstatres), 719 .pc_cachetype = RC_REPLBUFF, 720 .pc_xdrressize = ST+WC, 721 .pc_name = "SETATTR", 722 }, 723 [NFS3PROC_LOOKUP] = { 724 .pc_func = nfsd3_proc_lookup, 725 .pc_decode = nfs3svc_decode_diropargs, 726 .pc_encode = nfs3svc_encode_lookupres, 727 .pc_release = nfs3svc_release_fhandle2, 728 .pc_argsize = sizeof(struct nfsd3_diropargs), 729 .pc_ressize = sizeof(struct nfsd3_diropres), 730 .pc_cachetype = RC_NOCACHE, 731 .pc_xdrressize = ST+FH+pAT+pAT, 732 .pc_name = "LOOKUP", 733 }, 734 [NFS3PROC_ACCESS] = { 735 .pc_func = nfsd3_proc_access, 736 .pc_decode = nfs3svc_decode_accessargs, 737 .pc_encode = nfs3svc_encode_accessres, 738 .pc_release = nfs3svc_release_fhandle, 739 .pc_argsize = sizeof(struct nfsd3_accessargs), 740 .pc_ressize = sizeof(struct nfsd3_accessres), 741 .pc_cachetype = RC_NOCACHE, 742 .pc_xdrressize = ST+pAT+1, 743 .pc_name = "ACCESS", 744 }, 745 [NFS3PROC_READLINK] = { 746 .pc_func = nfsd3_proc_readlink, 747 .pc_decode = nfs3svc_decode_fhandleargs, 748 .pc_encode = nfs3svc_encode_readlinkres, 749 .pc_release = nfs3svc_release_fhandle, 750 .pc_argsize = sizeof(struct nfsd_fhandle), 751 .pc_ressize = sizeof(struct nfsd3_readlinkres), 752 .pc_cachetype = RC_NOCACHE, 753 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4, 754 .pc_name = "READLINK", 755 }, 756 [NFS3PROC_READ] = { 757 .pc_func = nfsd3_proc_read, 758 .pc_decode = nfs3svc_decode_readargs, 759 .pc_encode = nfs3svc_encode_readres, 760 .pc_release = nfs3svc_release_fhandle, 761 .pc_argsize = sizeof(struct nfsd3_readargs), 762 .pc_ressize = sizeof(struct nfsd3_readres), 763 .pc_cachetype = RC_NOCACHE, 764 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4, 765 .pc_name = "READ", 766 }, 767 [NFS3PROC_WRITE] = { 768 .pc_func = nfsd3_proc_write, 769 .pc_decode = nfs3svc_decode_writeargs, 770 .pc_encode = nfs3svc_encode_writeres, 771 .pc_release = nfs3svc_release_fhandle, 772 .pc_argsize = sizeof(struct nfsd3_writeargs), 773 .pc_ressize = sizeof(struct nfsd3_writeres), 774 .pc_cachetype = RC_REPLBUFF, 775 .pc_xdrressize = ST+WC+4, 776 .pc_name = "WRITE", 777 }, 778 [NFS3PROC_CREATE] = { 779 .pc_func = nfsd3_proc_create, 780 .pc_decode = nfs3svc_decode_createargs, 781 .pc_encode = nfs3svc_encode_createres, 782 .pc_release = nfs3svc_release_fhandle2, 783 .pc_argsize = sizeof(struct nfsd3_createargs), 784 .pc_ressize = sizeof(struct nfsd3_createres), 785 .pc_cachetype = RC_REPLBUFF, 786 .pc_xdrressize = ST+(1+FH+pAT)+WC, 787 .pc_name = "CREATE", 788 }, 789 [NFS3PROC_MKDIR] = { 790 .pc_func = nfsd3_proc_mkdir, 791 .pc_decode = nfs3svc_decode_mkdirargs, 792 .pc_encode = nfs3svc_encode_createres, 793 .pc_release = nfs3svc_release_fhandle2, 794 .pc_argsize = sizeof(struct nfsd3_mkdirargs), 795 .pc_ressize = sizeof(struct nfsd3_createres), 796 .pc_cachetype = RC_REPLBUFF, 797 .pc_xdrressize = ST+(1+FH+pAT)+WC, 798 .pc_name = "MKDIR", 799 }, 800 [NFS3PROC_SYMLINK] = { 801 .pc_func = nfsd3_proc_symlink, 802 .pc_decode = nfs3svc_decode_symlinkargs, 803 .pc_encode = nfs3svc_encode_createres, 804 .pc_release = nfs3svc_release_fhandle2, 805 .pc_argsize = sizeof(struct nfsd3_symlinkargs), 806 .pc_ressize = sizeof(struct nfsd3_createres), 807 .pc_cachetype = RC_REPLBUFF, 808 .pc_xdrressize = ST+(1+FH+pAT)+WC, 809 .pc_name = "SYMLINK", 810 }, 811 [NFS3PROC_MKNOD] = { 812 .pc_func = nfsd3_proc_mknod, 813 .pc_decode = nfs3svc_decode_mknodargs, 814 .pc_encode = nfs3svc_encode_createres, 815 .pc_release = nfs3svc_release_fhandle2, 816 .pc_argsize = sizeof(struct nfsd3_mknodargs), 817 .pc_ressize = sizeof(struct nfsd3_createres), 818 .pc_cachetype = RC_REPLBUFF, 819 .pc_xdrressize = ST+(1+FH+pAT)+WC, 820 .pc_name = "MKNOD", 821 }, 822 [NFS3PROC_REMOVE] = { 823 .pc_func = nfsd3_proc_remove, 824 .pc_decode = nfs3svc_decode_diropargs, 825 .pc_encode = nfs3svc_encode_wccstatres, 826 .pc_release = nfs3svc_release_fhandle, 827 .pc_argsize = sizeof(struct nfsd3_diropargs), 828 .pc_ressize = sizeof(struct nfsd3_wccstatres), 829 .pc_cachetype = RC_REPLBUFF, 830 .pc_xdrressize = ST+WC, 831 .pc_name = "REMOVE", 832 }, 833 [NFS3PROC_RMDIR] = { 834 .pc_func = nfsd3_proc_rmdir, 835 .pc_decode = nfs3svc_decode_diropargs, 836 .pc_encode = nfs3svc_encode_wccstatres, 837 .pc_release = nfs3svc_release_fhandle, 838 .pc_argsize = sizeof(struct nfsd3_diropargs), 839 .pc_ressize = sizeof(struct nfsd3_wccstatres), 840 .pc_cachetype = RC_REPLBUFF, 841 .pc_xdrressize = ST+WC, 842 .pc_name = "RMDIR", 843 }, 844 [NFS3PROC_RENAME] = { 845 .pc_func = nfsd3_proc_rename, 846 .pc_decode = nfs3svc_decode_renameargs, 847 .pc_encode = nfs3svc_encode_renameres, 848 .pc_release = nfs3svc_release_fhandle2, 849 .pc_argsize = sizeof(struct nfsd3_renameargs), 850 .pc_ressize = sizeof(struct nfsd3_renameres), 851 .pc_cachetype = RC_REPLBUFF, 852 .pc_xdrressize = ST+WC+WC, 853 .pc_name = "RENAME", 854 }, 855 [NFS3PROC_LINK] = { 856 .pc_func = nfsd3_proc_link, 857 .pc_decode = nfs3svc_decode_linkargs, 858 .pc_encode = nfs3svc_encode_linkres, 859 .pc_release = nfs3svc_release_fhandle2, 860 .pc_argsize = sizeof(struct nfsd3_linkargs), 861 .pc_ressize = sizeof(struct nfsd3_linkres), 862 .pc_cachetype = RC_REPLBUFF, 863 .pc_xdrressize = ST+pAT+WC, 864 .pc_name = "LINK", 865 }, 866 [NFS3PROC_READDIR] = { 867 .pc_func = nfsd3_proc_readdir, 868 .pc_decode = nfs3svc_decode_readdirargs, 869 .pc_encode = nfs3svc_encode_readdirres, 870 .pc_release = nfs3svc_release_fhandle, 871 .pc_argsize = sizeof(struct nfsd3_readdirargs), 872 .pc_ressize = sizeof(struct nfsd3_readdirres), 873 .pc_cachetype = RC_NOCACHE, 874 .pc_name = "READDIR", 875 }, 876 [NFS3PROC_READDIRPLUS] = { 877 .pc_func = nfsd3_proc_readdirplus, 878 .pc_decode = nfs3svc_decode_readdirplusargs, 879 .pc_encode = nfs3svc_encode_readdirres, 880 .pc_release = nfs3svc_release_fhandle, 881 .pc_argsize = sizeof(struct nfsd3_readdirplusargs), 882 .pc_ressize = sizeof(struct nfsd3_readdirres), 883 .pc_cachetype = RC_NOCACHE, 884 .pc_name = "READDIRPLUS", 885 }, 886 [NFS3PROC_FSSTAT] = { 887 .pc_func = nfsd3_proc_fsstat, 888 .pc_decode = nfs3svc_decode_fhandleargs, 889 .pc_encode = nfs3svc_encode_fsstatres, 890 .pc_argsize = sizeof(struct nfsd3_fhandleargs), 891 .pc_ressize = sizeof(struct nfsd3_fsstatres), 892 .pc_cachetype = RC_NOCACHE, 893 .pc_xdrressize = ST+pAT+2*6+1, 894 .pc_name = "FSSTAT", 895 }, 896 [NFS3PROC_FSINFO] = { 897 .pc_func = nfsd3_proc_fsinfo, 898 .pc_decode = nfs3svc_decode_fhandleargs, 899 .pc_encode = nfs3svc_encode_fsinfores, 900 .pc_argsize = sizeof(struct nfsd3_fhandleargs), 901 .pc_ressize = sizeof(struct nfsd3_fsinfores), 902 .pc_cachetype = RC_NOCACHE, 903 .pc_xdrressize = ST+pAT+12, 904 .pc_name = "FSINFO", 905 }, 906 [NFS3PROC_PATHCONF] = { 907 .pc_func = nfsd3_proc_pathconf, 908 .pc_decode = nfs3svc_decode_fhandleargs, 909 .pc_encode = nfs3svc_encode_pathconfres, 910 .pc_argsize = sizeof(struct nfsd3_fhandleargs), 911 .pc_ressize = sizeof(struct nfsd3_pathconfres), 912 .pc_cachetype = RC_NOCACHE, 913 .pc_xdrressize = ST+pAT+6, 914 .pc_name = "PATHCONF", 915 }, 916 [NFS3PROC_COMMIT] = { 917 .pc_func = nfsd3_proc_commit, 918 .pc_decode = nfs3svc_decode_commitargs, 919 .pc_encode = nfs3svc_encode_commitres, 920 .pc_release = nfs3svc_release_fhandle, 921 .pc_argsize = sizeof(struct nfsd3_commitargs), 922 .pc_ressize = sizeof(struct nfsd3_commitres), 923 .pc_cachetype = RC_NOCACHE, 924 .pc_xdrressize = ST+WC+2, 925 .pc_name = "COMMIT", 926 }, 927 }; 928 929 static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures3)]; 930 const struct svc_version nfsd_version3 = { 931 .vs_vers = 3, 932 .vs_nproc = 22, 933 .vs_proc = nfsd_procedures3, 934 .vs_dispatch = nfsd_dispatch, 935 .vs_count = nfsd_count3, 936 .vs_xdrsize = NFS3_SVC_XDRSIZE, 937 }; 938