1 /* 2 * Server-side procedures for NFSv4. 3 * 4 * Copyright (c) 2002 The Regents of the University of Michigan. 5 * All rights reserved. 6 * 7 * Kendrick Smith <kmsmith@umich.edu> 8 * Andy Adamson <andros@umich.edu> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 #include <linux/file.h> 36 #include <linux/slab.h> 37 38 #include "cache.h" 39 #include "xdr4.h" 40 #include "vfs.h" 41 42 #define NFSDDBG_FACILITY NFSDDBG_PROC 43 44 static u32 nfsd_attrmask[] = { 45 NFSD_WRITEABLE_ATTRS_WORD0, 46 NFSD_WRITEABLE_ATTRS_WORD1, 47 NFSD_WRITEABLE_ATTRS_WORD2 48 }; 49 50 static u32 nfsd41_ex_attrmask[] = { 51 NFSD_SUPPATTR_EXCLCREAT_WORD0, 52 NFSD_SUPPATTR_EXCLCREAT_WORD1, 53 NFSD_SUPPATTR_EXCLCREAT_WORD2 54 }; 55 56 static __be32 57 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 58 u32 *bmval, u32 *writable) 59 { 60 struct dentry *dentry = cstate->current_fh.fh_dentry; 61 62 /* 63 * Check about attributes are supported by the NFSv4 server or not. 64 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. 65 */ 66 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || 67 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || 68 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) 69 return nfserr_attrnotsupp; 70 71 /* 72 * Check FATTR4_WORD0_ACL can be supported 73 * in current environment or not. 74 */ 75 if (bmval[0] & FATTR4_WORD0_ACL) { 76 if (!IS_POSIXACL(dentry->d_inode)) 77 return nfserr_attrnotsupp; 78 } 79 80 /* 81 * According to spec, read-only attributes return ERR_INVAL. 82 */ 83 if (writable) { 84 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || 85 (bmval[2] & ~writable[2])) 86 return nfserr_inval; 87 } 88 89 return nfs_ok; 90 } 91 92 static __be32 93 nfsd4_check_open_attributes(struct svc_rqst *rqstp, 94 struct nfsd4_compound_state *cstate, struct nfsd4_open *open) 95 { 96 __be32 status = nfs_ok; 97 98 if (open->op_create == NFS4_OPEN_CREATE) { 99 if (open->op_createmode == NFS4_CREATE_UNCHECKED 100 || open->op_createmode == NFS4_CREATE_GUARDED) 101 status = check_attr_support(rqstp, cstate, 102 open->op_bmval, nfsd_attrmask); 103 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) 104 status = check_attr_support(rqstp, cstate, 105 open->op_bmval, nfsd41_ex_attrmask); 106 } 107 108 return status; 109 } 110 111 static int 112 is_create_with_attrs(struct nfsd4_open *open) 113 { 114 return open->op_create == NFS4_OPEN_CREATE 115 && (open->op_createmode == NFS4_CREATE_UNCHECKED 116 || open->op_createmode == NFS4_CREATE_GUARDED 117 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); 118 } 119 120 /* 121 * if error occurs when setting the acl, just clear the acl bit 122 * in the returned attr bitmap. 123 */ 124 static void 125 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, 126 struct nfs4_acl *acl, u32 *bmval) 127 { 128 __be32 status; 129 130 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); 131 if (status) 132 /* 133 * We should probably fail the whole open at this point, 134 * but we've already created the file, so it's too late; 135 * So this seems the least of evils: 136 */ 137 bmval[0] &= ~FATTR4_WORD0_ACL; 138 } 139 140 static inline void 141 fh_dup2(struct svc_fh *dst, struct svc_fh *src) 142 { 143 fh_put(dst); 144 dget(src->fh_dentry); 145 if (src->fh_export) 146 cache_get(&src->fh_export->h); 147 *dst = *src; 148 } 149 150 static __be32 151 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) 152 { 153 __be32 status; 154 155 if (open->op_truncate && 156 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) 157 return nfserr_inval; 158 159 if (open->op_share_access & NFS4_SHARE_ACCESS_READ) 160 accmode |= NFSD_MAY_READ; 161 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) 162 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); 163 if (open->op_share_deny & NFS4_SHARE_DENY_READ) 164 accmode |= NFSD_MAY_WRITE; 165 166 status = fh_verify(rqstp, current_fh, S_IFREG, accmode); 167 168 return status; 169 } 170 171 static __be32 172 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) 173 { 174 struct svc_fh resfh; 175 __be32 status; 176 int created = 0; 177 178 fh_init(&resfh, NFS4_FHSIZE); 179 open->op_truncate = 0; 180 181 if (open->op_create) { 182 /* FIXME: check session persistence and pnfs flags. 183 * The nfsv4.1 spec requires the following semantics: 184 * 185 * Persistent | pNFS | Server REQUIRED | Client Allowed 186 * Reply Cache | server | | 187 * -------------+--------+-----------------+-------------------- 188 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 189 * | | | (SHOULD) 190 * | | and EXCLUSIVE4 | or EXCLUSIVE4 191 * | | | (SHOULD NOT) 192 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 193 * yes | no | GUARDED4 | GUARDED4 194 * yes | yes | GUARDED4 | GUARDED4 195 */ 196 197 /* 198 * Note: create modes (UNCHECKED,GUARDED...) are the same 199 * in NFSv4 as in v3 except EXCLUSIVE4_1. 200 */ 201 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, 202 open->op_fname.len, &open->op_iattr, 203 &resfh, open->op_createmode, 204 (u32 *)open->op_verf.data, 205 &open->op_truncate, &created); 206 207 /* 208 * Following rfc 3530 14.2.16, use the returned bitmask 209 * to indicate which attributes we used to store the 210 * verifier: 211 */ 212 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) 213 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | 214 FATTR4_WORD1_TIME_MODIFY); 215 } else { 216 status = nfsd_lookup(rqstp, current_fh, 217 open->op_fname.data, open->op_fname.len, &resfh); 218 fh_unlock(current_fh); 219 } 220 if (status) 221 goto out; 222 223 if (is_create_with_attrs(open) && open->op_acl != NULL) 224 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval); 225 226 set_change_info(&open->op_cinfo, current_fh); 227 fh_dup2(current_fh, &resfh); 228 229 /* set reply cache */ 230 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, 231 &resfh.fh_handle); 232 if (!created) 233 status = do_open_permission(rqstp, current_fh, open, 234 NFSD_MAY_NOP); 235 236 out: 237 fh_put(&resfh); 238 return status; 239 } 240 241 static __be32 242 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) 243 { 244 __be32 status; 245 246 /* Only reclaims from previously confirmed clients are valid */ 247 if ((status = nfs4_check_open_reclaim(&open->op_clientid))) 248 return status; 249 250 /* We don't know the target directory, and therefore can not 251 * set the change info 252 */ 253 254 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); 255 256 /* set replay cache */ 257 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, 258 ¤t_fh->fh_handle); 259 260 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && 261 (open->op_iattr.ia_size == 0); 262 263 status = do_open_permission(rqstp, current_fh, open, 264 NFSD_MAY_OWNER_OVERRIDE); 265 266 return status; 267 } 268 269 static void 270 copy_clientid(clientid_t *clid, struct nfsd4_session *session) 271 { 272 struct nfsd4_sessionid *sid = 273 (struct nfsd4_sessionid *)session->se_sessionid.data; 274 275 clid->cl_boot = sid->clientid.cl_boot; 276 clid->cl_id = sid->clientid.cl_id; 277 } 278 279 static __be32 280 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 281 struct nfsd4_open *open) 282 { 283 __be32 status; 284 struct nfsd4_compoundres *resp; 285 286 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", 287 (int)open->op_fname.len, open->op_fname.data, 288 open->op_stateowner); 289 290 /* This check required by spec. */ 291 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) 292 return nfserr_inval; 293 294 /* 295 * RFC5661 18.51.3 296 * Before RECLAIM_COMPLETE done, server should deny new lock 297 */ 298 if (nfsd4_has_session(cstate) && 299 !cstate->session->se_client->cl_firststate && 300 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) 301 return nfserr_grace; 302 303 if (nfsd4_has_session(cstate)) 304 copy_clientid(&open->op_clientid, cstate->session); 305 306 nfs4_lock_state(); 307 308 /* check seqid for replay. set nfs4_owner */ 309 resp = rqstp->rq_resp; 310 status = nfsd4_process_open1(&resp->cstate, open); 311 if (status == nfserr_replay_me) { 312 struct nfs4_replay *rp = &open->op_stateowner->so_replay; 313 fh_put(&cstate->current_fh); 314 fh_copy_shallow(&cstate->current_fh.fh_handle, 315 &rp->rp_openfh); 316 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 317 if (status) 318 dprintk("nfsd4_open: replay failed" 319 " restoring previous filehandle\n"); 320 else 321 status = nfserr_replay_me; 322 } 323 if (status) 324 goto out; 325 326 status = nfsd4_check_open_attributes(rqstp, cstate, open); 327 if (status) 328 goto out; 329 330 /* Openowner is now set, so sequence id will get bumped. Now we need 331 * these checks before we do any creates: */ 332 status = nfserr_grace; 333 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) 334 goto out; 335 status = nfserr_no_grace; 336 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) 337 goto out; 338 339 switch (open->op_claim_type) { 340 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 341 case NFS4_OPEN_CLAIM_NULL: 342 /* 343 * (1) set CURRENT_FH to the file being opened, 344 * creating it if necessary, (2) set open->op_cinfo, 345 * (3) set open->op_truncate if the file is to be 346 * truncated after opening, (4) do permission checking. 347 */ 348 status = do_open_lookup(rqstp, &cstate->current_fh, 349 open); 350 if (status) 351 goto out; 352 break; 353 case NFS4_OPEN_CLAIM_PREVIOUS: 354 open->op_stateowner->so_confirmed = 1; 355 /* 356 * The CURRENT_FH is already set to the file being 357 * opened. (1) set open->op_cinfo, (2) set 358 * open->op_truncate if the file is to be truncated 359 * after opening, (3) do permission checking. 360 */ 361 status = do_open_fhandle(rqstp, &cstate->current_fh, 362 open); 363 if (status) 364 goto out; 365 break; 366 case NFS4_OPEN_CLAIM_DELEGATE_PREV: 367 open->op_stateowner->so_confirmed = 1; 368 dprintk("NFSD: unsupported OPEN claim type %d\n", 369 open->op_claim_type); 370 status = nfserr_notsupp; 371 goto out; 372 default: 373 dprintk("NFSD: Invalid OPEN claim type %d\n", 374 open->op_claim_type); 375 status = nfserr_inval; 376 goto out; 377 } 378 /* 379 * nfsd4_process_open2() does the actual opening of the file. If 380 * successful, it (1) truncates the file if open->op_truncate was 381 * set, (2) sets open->op_stateid, (3) sets open->op_delegation. 382 */ 383 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); 384 out: 385 if (open->op_stateowner) { 386 nfs4_get_stateowner(open->op_stateowner); 387 cstate->replay_owner = open->op_stateowner; 388 } 389 nfs4_unlock_state(); 390 return status; 391 } 392 393 /* 394 * filehandle-manipulating ops. 395 */ 396 static __be32 397 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 398 struct svc_fh **getfh) 399 { 400 if (!cstate->current_fh.fh_dentry) 401 return nfserr_nofilehandle; 402 403 *getfh = &cstate->current_fh; 404 return nfs_ok; 405 } 406 407 static __be32 408 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 409 struct nfsd4_putfh *putfh) 410 { 411 fh_put(&cstate->current_fh); 412 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; 413 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, 414 putfh->pf_fhlen); 415 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); 416 } 417 418 static __be32 419 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 420 void *arg) 421 { 422 __be32 status; 423 424 fh_put(&cstate->current_fh); 425 status = exp_pseudoroot(rqstp, &cstate->current_fh); 426 return status; 427 } 428 429 static __be32 430 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 431 void *arg) 432 { 433 if (!cstate->save_fh.fh_dentry) 434 return nfserr_restorefh; 435 436 fh_dup2(&cstate->current_fh, &cstate->save_fh); 437 return nfs_ok; 438 } 439 440 static __be32 441 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 442 void *arg) 443 { 444 if (!cstate->current_fh.fh_dentry) 445 return nfserr_nofilehandle; 446 447 fh_dup2(&cstate->save_fh, &cstate->current_fh); 448 return nfs_ok; 449 } 450 451 /* 452 * misc nfsv4 ops 453 */ 454 static __be32 455 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 456 struct nfsd4_access *access) 457 { 458 if (access->ac_req_access & ~NFS3_ACCESS_FULL) 459 return nfserr_inval; 460 461 access->ac_resp_access = access->ac_req_access; 462 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, 463 &access->ac_supported); 464 } 465 466 static __be32 467 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 468 struct nfsd4_commit *commit) 469 { 470 __be32 status; 471 472 u32 *p = (u32 *)commit->co_verf.data; 473 *p++ = nfssvc_boot.tv_sec; 474 *p++ = nfssvc_boot.tv_usec; 475 476 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, 477 commit->co_count); 478 if (status == nfserr_symlink) 479 status = nfserr_inval; 480 return status; 481 } 482 483 static __be32 484 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 485 struct nfsd4_create *create) 486 { 487 struct svc_fh resfh; 488 __be32 status; 489 dev_t rdev; 490 491 fh_init(&resfh, NFS4_FHSIZE); 492 493 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, 494 NFSD_MAY_CREATE); 495 if (status == nfserr_symlink) 496 status = nfserr_notdir; 497 if (status) 498 return status; 499 500 status = check_attr_support(rqstp, cstate, create->cr_bmval, 501 nfsd_attrmask); 502 if (status) 503 return status; 504 505 switch (create->cr_type) { 506 case NF4LNK: 507 /* ugh! we have to null-terminate the linktext, or 508 * vfs_symlink() will choke. it is always safe to 509 * null-terminate by brute force, since at worst we 510 * will overwrite the first byte of the create namelen 511 * in the XDR buffer, which has already been extracted 512 * during XDR decode. 513 */ 514 create->cr_linkname[create->cr_linklen] = 0; 515 516 status = nfsd_symlink(rqstp, &cstate->current_fh, 517 create->cr_name, create->cr_namelen, 518 create->cr_linkname, create->cr_linklen, 519 &resfh, &create->cr_iattr); 520 break; 521 522 case NF4BLK: 523 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); 524 if (MAJOR(rdev) != create->cr_specdata1 || 525 MINOR(rdev) != create->cr_specdata2) 526 return nfserr_inval; 527 status = nfsd_create(rqstp, &cstate->current_fh, 528 create->cr_name, create->cr_namelen, 529 &create->cr_iattr, S_IFBLK, rdev, &resfh); 530 break; 531 532 case NF4CHR: 533 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); 534 if (MAJOR(rdev) != create->cr_specdata1 || 535 MINOR(rdev) != create->cr_specdata2) 536 return nfserr_inval; 537 status = nfsd_create(rqstp, &cstate->current_fh, 538 create->cr_name, create->cr_namelen, 539 &create->cr_iattr,S_IFCHR, rdev, &resfh); 540 break; 541 542 case NF4SOCK: 543 status = nfsd_create(rqstp, &cstate->current_fh, 544 create->cr_name, create->cr_namelen, 545 &create->cr_iattr, S_IFSOCK, 0, &resfh); 546 break; 547 548 case NF4FIFO: 549 status = nfsd_create(rqstp, &cstate->current_fh, 550 create->cr_name, create->cr_namelen, 551 &create->cr_iattr, S_IFIFO, 0, &resfh); 552 break; 553 554 case NF4DIR: 555 create->cr_iattr.ia_valid &= ~ATTR_SIZE; 556 status = nfsd_create(rqstp, &cstate->current_fh, 557 create->cr_name, create->cr_namelen, 558 &create->cr_iattr, S_IFDIR, 0, &resfh); 559 break; 560 561 default: 562 status = nfserr_badtype; 563 } 564 565 if (status) 566 goto out; 567 568 if (create->cr_acl != NULL) 569 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, 570 create->cr_bmval); 571 572 fh_unlock(&cstate->current_fh); 573 set_change_info(&create->cr_cinfo, &cstate->current_fh); 574 fh_dup2(&cstate->current_fh, &resfh); 575 out: 576 fh_put(&resfh); 577 return status; 578 } 579 580 static __be32 581 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 582 struct nfsd4_getattr *getattr) 583 { 584 __be32 status; 585 586 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 587 if (status) 588 return status; 589 590 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) 591 return nfserr_inval; 592 593 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); 594 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); 595 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); 596 597 getattr->ga_fhp = &cstate->current_fh; 598 return nfs_ok; 599 } 600 601 static __be32 602 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 603 struct nfsd4_link *link) 604 { 605 __be32 status = nfserr_nofilehandle; 606 607 if (!cstate->save_fh.fh_dentry) 608 return status; 609 status = nfsd_link(rqstp, &cstate->current_fh, 610 link->li_name, link->li_namelen, &cstate->save_fh); 611 if (!status) 612 set_change_info(&link->li_cinfo, &cstate->current_fh); 613 return status; 614 } 615 616 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) 617 { 618 struct svc_fh tmp_fh; 619 __be32 ret; 620 621 fh_init(&tmp_fh, NFS4_FHSIZE); 622 ret = exp_pseudoroot(rqstp, &tmp_fh); 623 if (ret) 624 return ret; 625 if (tmp_fh.fh_dentry == fh->fh_dentry) { 626 fh_put(&tmp_fh); 627 return nfserr_noent; 628 } 629 fh_put(&tmp_fh); 630 return nfsd_lookup(rqstp, fh, "..", 2, fh); 631 } 632 633 static __be32 634 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 635 void *arg) 636 { 637 return nfsd4_do_lookupp(rqstp, &cstate->current_fh); 638 } 639 640 static __be32 641 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 642 struct nfsd4_lookup *lookup) 643 { 644 return nfsd_lookup(rqstp, &cstate->current_fh, 645 lookup->lo_name, lookup->lo_len, 646 &cstate->current_fh); 647 } 648 649 static __be32 650 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 651 struct nfsd4_read *read) 652 { 653 __be32 status; 654 655 /* no need to check permission - this will be done in nfsd_read() */ 656 657 read->rd_filp = NULL; 658 if (read->rd_offset >= OFFSET_MAX) 659 return nfserr_inval; 660 661 nfs4_lock_state(); 662 /* check stateid */ 663 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid, 664 RD_STATE, &read->rd_filp))) { 665 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); 666 goto out; 667 } 668 if (read->rd_filp) 669 get_file(read->rd_filp); 670 status = nfs_ok; 671 out: 672 nfs4_unlock_state(); 673 read->rd_rqstp = rqstp; 674 read->rd_fhp = &cstate->current_fh; 675 return status; 676 } 677 678 static __be32 679 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 680 struct nfsd4_readdir *readdir) 681 { 682 u64 cookie = readdir->rd_cookie; 683 static const nfs4_verifier zeroverf; 684 685 /* no need to check permission - this will be done in nfsd_readdir() */ 686 687 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) 688 return nfserr_inval; 689 690 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); 691 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); 692 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); 693 694 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || 695 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) 696 return nfserr_bad_cookie; 697 698 readdir->rd_rqstp = rqstp; 699 readdir->rd_fhp = &cstate->current_fh; 700 return nfs_ok; 701 } 702 703 static __be32 704 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 705 struct nfsd4_readlink *readlink) 706 { 707 readlink->rl_rqstp = rqstp; 708 readlink->rl_fhp = &cstate->current_fh; 709 return nfs_ok; 710 } 711 712 static __be32 713 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 714 struct nfsd4_remove *remove) 715 { 716 __be32 status; 717 718 if (locks_in_grace()) 719 return nfserr_grace; 720 status = nfsd_unlink(rqstp, &cstate->current_fh, 0, 721 remove->rm_name, remove->rm_namelen); 722 if (status == nfserr_symlink) 723 return nfserr_notdir; 724 if (!status) { 725 fh_unlock(&cstate->current_fh); 726 set_change_info(&remove->rm_cinfo, &cstate->current_fh); 727 } 728 return status; 729 } 730 731 static __be32 732 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 733 struct nfsd4_rename *rename) 734 { 735 __be32 status = nfserr_nofilehandle; 736 737 if (!cstate->save_fh.fh_dentry) 738 return status; 739 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags 740 & NFSEXP_NOSUBTREECHECK)) 741 return nfserr_grace; 742 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, 743 rename->rn_snamelen, &cstate->current_fh, 744 rename->rn_tname, rename->rn_tnamelen); 745 746 /* the underlying filesystem returns different error's than required 747 * by NFSv4. both save_fh and current_fh have been verified.. */ 748 if (status == nfserr_isdir) 749 status = nfserr_exist; 750 else if ((status == nfserr_notdir) && 751 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && 752 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) 753 status = nfserr_exist; 754 else if (status == nfserr_symlink) 755 status = nfserr_notdir; 756 757 if (!status) { 758 set_change_info(&rename->rn_sinfo, &cstate->current_fh); 759 set_change_info(&rename->rn_tinfo, &cstate->save_fh); 760 } 761 return status; 762 } 763 764 static __be32 765 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 766 struct nfsd4_secinfo *secinfo) 767 { 768 struct svc_fh resfh; 769 struct svc_export *exp; 770 struct dentry *dentry; 771 __be32 err; 772 773 fh_init(&resfh, NFS4_FHSIZE); 774 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); 775 if (err) 776 return err; 777 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, 778 secinfo->si_name, secinfo->si_namelen, 779 &exp, &dentry); 780 if (err) 781 return err; 782 if (dentry->d_inode == NULL) { 783 exp_put(exp); 784 err = nfserr_noent; 785 } else 786 secinfo->si_exp = exp; 787 dput(dentry); 788 if (cstate->minorversion) 789 /* See rfc 5661 section 2.6.3.1.1.8 */ 790 fh_put(&cstate->current_fh); 791 return err; 792 } 793 794 static __be32 795 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 796 struct nfsd4_secinfo_no_name *sin) 797 { 798 __be32 err; 799 800 switch (sin->sin_style) { 801 case NFS4_SECINFO_STYLE4_CURRENT_FH: 802 break; 803 case NFS4_SECINFO_STYLE4_PARENT: 804 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); 805 if (err) 806 return err; 807 break; 808 default: 809 return nfserr_inval; 810 } 811 exp_get(cstate->current_fh.fh_export); 812 sin->sin_exp = cstate->current_fh.fh_export; 813 fh_put(&cstate->current_fh); 814 return nfs_ok; 815 } 816 817 static __be32 818 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 819 struct nfsd4_setattr *setattr) 820 { 821 __be32 status = nfs_ok; 822 823 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { 824 nfs4_lock_state(); 825 status = nfs4_preprocess_stateid_op(cstate, 826 &setattr->sa_stateid, WR_STATE, NULL); 827 nfs4_unlock_state(); 828 if (status) { 829 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); 830 return status; 831 } 832 } 833 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); 834 if (status) 835 return status; 836 status = nfs_ok; 837 838 status = check_attr_support(rqstp, cstate, setattr->sa_bmval, 839 nfsd_attrmask); 840 if (status) 841 goto out; 842 843 if (setattr->sa_acl != NULL) 844 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, 845 setattr->sa_acl); 846 if (status) 847 goto out; 848 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, 849 0, (time_t)0); 850 out: 851 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); 852 return status; 853 } 854 855 static __be32 856 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 857 struct nfsd4_write *write) 858 { 859 stateid_t *stateid = &write->wr_stateid; 860 struct file *filp = NULL; 861 u32 *p; 862 __be32 status = nfs_ok; 863 unsigned long cnt; 864 865 /* no need to check permission - this will be done in nfsd_write() */ 866 867 if (write->wr_offset >= OFFSET_MAX) 868 return nfserr_inval; 869 870 nfs4_lock_state(); 871 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp); 872 if (filp) 873 get_file(filp); 874 nfs4_unlock_state(); 875 876 if (status) { 877 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); 878 return status; 879 } 880 881 cnt = write->wr_buflen; 882 write->wr_how_written = write->wr_stable_how; 883 p = (u32 *)write->wr_verifier.data; 884 *p++ = nfssvc_boot.tv_sec; 885 *p++ = nfssvc_boot.tv_usec; 886 887 status = nfsd_write(rqstp, &cstate->current_fh, filp, 888 write->wr_offset, rqstp->rq_vec, write->wr_vlen, 889 &cnt, &write->wr_how_written); 890 if (filp) 891 fput(filp); 892 893 write->wr_bytes_written = cnt; 894 895 if (status == nfserr_symlink) 896 status = nfserr_inval; 897 return status; 898 } 899 900 /* This routine never returns NFS_OK! If there are no other errors, it 901 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the 902 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME 903 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. 904 */ 905 static __be32 906 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 907 struct nfsd4_verify *verify) 908 { 909 __be32 *buf, *p; 910 int count; 911 __be32 status; 912 913 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 914 if (status) 915 return status; 916 917 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); 918 if (status) 919 return status; 920 921 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) 922 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) 923 return nfserr_inval; 924 if (verify->ve_attrlen & 3) 925 return nfserr_inval; 926 927 /* count in words: 928 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 929 */ 930 count = 4 + (verify->ve_attrlen >> 2); 931 buf = kmalloc(count << 2, GFP_KERNEL); 932 if (!buf) 933 return nfserr_resource; 934 935 status = nfsd4_encode_fattr(&cstate->current_fh, 936 cstate->current_fh.fh_export, 937 cstate->current_fh.fh_dentry, buf, 938 &count, verify->ve_bmval, 939 rqstp, 0); 940 941 /* this means that nfsd4_encode_fattr() ran out of space */ 942 if (status == nfserr_resource && count == 0) 943 status = nfserr_not_same; 944 if (status) 945 goto out_kfree; 946 947 /* skip bitmap */ 948 p = buf + 1 + ntohl(buf[0]); 949 status = nfserr_not_same; 950 if (ntohl(*p++) != verify->ve_attrlen) 951 goto out_kfree; 952 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) 953 status = nfserr_same; 954 955 out_kfree: 956 kfree(buf); 957 return status; 958 } 959 960 static __be32 961 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 962 struct nfsd4_verify *verify) 963 { 964 __be32 status; 965 966 status = _nfsd4_verify(rqstp, cstate, verify); 967 return status == nfserr_not_same ? nfs_ok : status; 968 } 969 970 static __be32 971 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 972 struct nfsd4_verify *verify) 973 { 974 __be32 status; 975 976 status = _nfsd4_verify(rqstp, cstate, verify); 977 return status == nfserr_same ? nfs_ok : status; 978 } 979 980 /* 981 * NULL call. 982 */ 983 static __be32 984 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) 985 { 986 return nfs_ok; 987 } 988 989 static inline void nfsd4_increment_op_stats(u32 opnum) 990 { 991 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) 992 nfsdstats.nfs4_opcount[opnum]++; 993 } 994 995 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, 996 void *); 997 enum nfsd4_op_flags { 998 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ 999 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ 1000 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ 1001 /* For rfc 5661 section 2.6.3.1.1: */ 1002 OP_HANDLES_WRONGSEC = 1 << 3, 1003 OP_IS_PUTFH_LIKE = 1 << 4, 1004 }; 1005 1006 struct nfsd4_operation { 1007 nfsd4op_func op_func; 1008 u32 op_flags; 1009 char *op_name; 1010 /* 1011 * We use the DRC for compounds containing non-idempotent 1012 * operations, *except* those that are 4.1-specific (since 1013 * sessions provide their own EOS), and except for stateful 1014 * operations other than setclientid and setclientid_confirm 1015 * (since sequence numbers provide EOS for open, lock, etc in 1016 * the v4.0 case). 1017 */ 1018 bool op_cacheresult; 1019 }; 1020 1021 static struct nfsd4_operation nfsd4_ops[]; 1022 1023 static const char *nfsd4_op_name(unsigned opnum); 1024 1025 /* 1026 * Enforce NFSv4.1 COMPOUND ordering rules: 1027 * 1028 * Also note, enforced elsewhere: 1029 * - SEQUENCE other than as first op results in 1030 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) 1031 * - BIND_CONN_TO_SESSION must be the only op in its compound. 1032 * (Enforced in nfsd4_bind_conn_to_session().) 1033 * - DESTROY_SESSION must be the final operation in a compound, if 1034 * sessionid's in SEQUENCE and DESTROY_SESSION are the same. 1035 * (Enforced in nfsd4_destroy_session().) 1036 */ 1037 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) 1038 { 1039 struct nfsd4_op *op = &args->ops[0]; 1040 1041 /* These ordering requirements don't apply to NFSv4.0: */ 1042 if (args->minorversion == 0) 1043 return nfs_ok; 1044 /* This is weird, but OK, not our problem: */ 1045 if (args->opcnt == 0) 1046 return nfs_ok; 1047 if (op->status == nfserr_op_illegal) 1048 return nfs_ok; 1049 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) 1050 return nfserr_op_not_in_session; 1051 if (op->opnum == OP_SEQUENCE) 1052 return nfs_ok; 1053 if (args->opcnt != 1) 1054 return nfserr_not_only_op; 1055 return nfs_ok; 1056 } 1057 1058 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) 1059 { 1060 return &nfsd4_ops[op->opnum]; 1061 } 1062 1063 bool nfsd4_cache_this_op(struct nfsd4_op *op) 1064 { 1065 return OPDESC(op)->op_cacheresult; 1066 } 1067 1068 static bool need_wrongsec_check(struct svc_rqst *rqstp) 1069 { 1070 struct nfsd4_compoundres *resp = rqstp->rq_resp; 1071 struct nfsd4_compoundargs *argp = rqstp->rq_argp; 1072 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; 1073 struct nfsd4_op *next = &argp->ops[resp->opcnt]; 1074 struct nfsd4_operation *thisd; 1075 struct nfsd4_operation *nextd; 1076 1077 thisd = OPDESC(this); 1078 /* 1079 * Most ops check wronsec on our own; only the putfh-like ops 1080 * have special rules. 1081 */ 1082 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) 1083 return false; 1084 /* 1085 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a 1086 * put-filehandle operation if we're not going to use the 1087 * result: 1088 */ 1089 if (argp->opcnt == resp->opcnt) 1090 return false; 1091 1092 nextd = OPDESC(next); 1093 /* 1094 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC 1095 * errors themselves as necessary; others should check for them 1096 * now: 1097 */ 1098 return !(nextd->op_flags & OP_HANDLES_WRONGSEC); 1099 } 1100 1101 /* 1102 * COMPOUND call. 1103 */ 1104 static __be32 1105 nfsd4_proc_compound(struct svc_rqst *rqstp, 1106 struct nfsd4_compoundargs *args, 1107 struct nfsd4_compoundres *resp) 1108 { 1109 struct nfsd4_op *op; 1110 struct nfsd4_operation *opdesc; 1111 struct nfsd4_compound_state *cstate = &resp->cstate; 1112 int slack_bytes; 1113 __be32 status; 1114 1115 resp->xbuf = &rqstp->rq_res; 1116 resp->p = rqstp->rq_res.head[0].iov_base + 1117 rqstp->rq_res.head[0].iov_len; 1118 resp->tagp = resp->p; 1119 /* reserve space for: taglen, tag, and opcnt */ 1120 resp->p += 2 + XDR_QUADLEN(args->taglen); 1121 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; 1122 resp->taglen = args->taglen; 1123 resp->tag = args->tag; 1124 resp->opcnt = 0; 1125 resp->rqstp = rqstp; 1126 resp->cstate.minorversion = args->minorversion; 1127 resp->cstate.replay_owner = NULL; 1128 resp->cstate.session = NULL; 1129 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); 1130 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); 1131 /* 1132 * Don't use the deferral mechanism for NFSv4; compounds make it 1133 * too hard to avoid non-idempotency problems. 1134 */ 1135 rqstp->rq_usedeferral = 0; 1136 1137 /* 1138 * According to RFC3010, this takes precedence over all other errors. 1139 */ 1140 status = nfserr_minor_vers_mismatch; 1141 if (args->minorversion > nfsd_supported_minorversion) 1142 goto out; 1143 1144 status = nfs41_check_op_ordering(args); 1145 if (status) { 1146 op = &args->ops[0]; 1147 op->status = status; 1148 goto encode_op; 1149 } 1150 1151 while (!status && resp->opcnt < args->opcnt) { 1152 op = &args->ops[resp->opcnt++]; 1153 1154 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", 1155 resp->opcnt, args->opcnt, op->opnum, 1156 nfsd4_op_name(op->opnum)); 1157 /* 1158 * The XDR decode routines may have pre-set op->status; 1159 * for example, if there is a miscellaneous XDR error 1160 * it will be set to nfserr_bad_xdr. 1161 */ 1162 if (op->status) 1163 goto encode_op; 1164 1165 /* We must be able to encode a successful response to 1166 * this operation, with enough room left over to encode a 1167 * failed response to the next operation. If we don't 1168 * have enough room, fail with ERR_RESOURCE. 1169 */ 1170 slack_bytes = (char *)resp->end - (char *)resp->p; 1171 if (slack_bytes < COMPOUND_SLACK_SPACE 1172 + COMPOUND_ERR_SLACK_SPACE) { 1173 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); 1174 op->status = nfserr_resource; 1175 goto encode_op; 1176 } 1177 1178 opdesc = OPDESC(op); 1179 1180 if (!cstate->current_fh.fh_dentry) { 1181 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { 1182 op->status = nfserr_nofilehandle; 1183 goto encode_op; 1184 } 1185 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && 1186 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { 1187 op->status = nfserr_moved; 1188 goto encode_op; 1189 } 1190 1191 if (opdesc->op_func) 1192 op->status = opdesc->op_func(rqstp, cstate, &op->u); 1193 else 1194 BUG_ON(op->status == nfs_ok); 1195 1196 if (!op->status && need_wrongsec_check(rqstp)) 1197 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); 1198 1199 encode_op: 1200 /* Only from SEQUENCE */ 1201 if (resp->cstate.status == nfserr_replay_cache) { 1202 dprintk("%s NFS4.1 replay from cache\n", __func__); 1203 status = op->status; 1204 goto out; 1205 } 1206 if (op->status == nfserr_replay_me) { 1207 op->replay = &cstate->replay_owner->so_replay; 1208 nfsd4_encode_replay(resp, op); 1209 status = op->status = op->replay->rp_status; 1210 } else { 1211 nfsd4_encode_operation(resp, op); 1212 status = op->status; 1213 } 1214 1215 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", 1216 args->ops, args->opcnt, resp->opcnt, op->opnum, 1217 be32_to_cpu(status)); 1218 1219 if (cstate->replay_owner) { 1220 nfs4_put_stateowner(cstate->replay_owner); 1221 cstate->replay_owner = NULL; 1222 } 1223 /* XXX Ugh, we need to get rid of this kind of special case: */ 1224 if (op->opnum == OP_READ && op->u.read.rd_filp) 1225 fput(op->u.read.rd_filp); 1226 1227 nfsd4_increment_op_stats(op->opnum); 1228 } 1229 1230 resp->cstate.status = status; 1231 fh_put(&resp->cstate.current_fh); 1232 fh_put(&resp->cstate.save_fh); 1233 BUG_ON(resp->cstate.replay_owner); 1234 out: 1235 /* Reset deferral mechanism for RPC deferrals */ 1236 rqstp->rq_usedeferral = 1; 1237 dprintk("nfsv4 compound returned %d\n", ntohl(status)); 1238 return status; 1239 } 1240 1241 static struct nfsd4_operation nfsd4_ops[] = { 1242 [OP_ACCESS] = { 1243 .op_func = (nfsd4op_func)nfsd4_access, 1244 .op_name = "OP_ACCESS", 1245 }, 1246 [OP_CLOSE] = { 1247 .op_func = (nfsd4op_func)nfsd4_close, 1248 .op_name = "OP_CLOSE", 1249 }, 1250 [OP_COMMIT] = { 1251 .op_func = (nfsd4op_func)nfsd4_commit, 1252 .op_name = "OP_COMMIT", 1253 }, 1254 [OP_CREATE] = { 1255 .op_func = (nfsd4op_func)nfsd4_create, 1256 .op_name = "OP_CREATE", 1257 .op_cacheresult = true, 1258 }, 1259 [OP_DELEGRETURN] = { 1260 .op_func = (nfsd4op_func)nfsd4_delegreturn, 1261 .op_name = "OP_DELEGRETURN", 1262 }, 1263 [OP_GETATTR] = { 1264 .op_func = (nfsd4op_func)nfsd4_getattr, 1265 .op_flags = ALLOWED_ON_ABSENT_FS, 1266 .op_name = "OP_GETATTR", 1267 }, 1268 [OP_GETFH] = { 1269 .op_func = (nfsd4op_func)nfsd4_getfh, 1270 .op_name = "OP_GETFH", 1271 }, 1272 [OP_LINK] = { 1273 .op_func = (nfsd4op_func)nfsd4_link, 1274 .op_name = "OP_LINK", 1275 .op_cacheresult = true, 1276 }, 1277 [OP_LOCK] = { 1278 .op_func = (nfsd4op_func)nfsd4_lock, 1279 .op_name = "OP_LOCK", 1280 }, 1281 [OP_LOCKT] = { 1282 .op_func = (nfsd4op_func)nfsd4_lockt, 1283 .op_name = "OP_LOCKT", 1284 }, 1285 [OP_LOCKU] = { 1286 .op_func = (nfsd4op_func)nfsd4_locku, 1287 .op_name = "OP_LOCKU", 1288 }, 1289 [OP_LOOKUP] = { 1290 .op_func = (nfsd4op_func)nfsd4_lookup, 1291 .op_flags = OP_HANDLES_WRONGSEC, 1292 .op_name = "OP_LOOKUP", 1293 }, 1294 [OP_LOOKUPP] = { 1295 .op_func = (nfsd4op_func)nfsd4_lookupp, 1296 .op_flags = OP_HANDLES_WRONGSEC, 1297 .op_name = "OP_LOOKUPP", 1298 }, 1299 [OP_NVERIFY] = { 1300 .op_func = (nfsd4op_func)nfsd4_nverify, 1301 .op_name = "OP_NVERIFY", 1302 }, 1303 [OP_OPEN] = { 1304 .op_func = (nfsd4op_func)nfsd4_open, 1305 .op_flags = OP_HANDLES_WRONGSEC, 1306 .op_name = "OP_OPEN", 1307 }, 1308 [OP_OPEN_CONFIRM] = { 1309 .op_func = (nfsd4op_func)nfsd4_open_confirm, 1310 .op_name = "OP_OPEN_CONFIRM", 1311 }, 1312 [OP_OPEN_DOWNGRADE] = { 1313 .op_func = (nfsd4op_func)nfsd4_open_downgrade, 1314 .op_name = "OP_OPEN_DOWNGRADE", 1315 }, 1316 [OP_PUTFH] = { 1317 .op_func = (nfsd4op_func)nfsd4_putfh, 1318 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS 1319 | OP_IS_PUTFH_LIKE, 1320 .op_name = "OP_PUTFH", 1321 }, 1322 [OP_PUTPUBFH] = { 1323 .op_func = (nfsd4op_func)nfsd4_putrootfh, 1324 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS 1325 | OP_IS_PUTFH_LIKE, 1326 .op_name = "OP_PUTPUBFH", 1327 }, 1328 [OP_PUTROOTFH] = { 1329 .op_func = (nfsd4op_func)nfsd4_putrootfh, 1330 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS 1331 | OP_IS_PUTFH_LIKE, 1332 .op_name = "OP_PUTROOTFH", 1333 }, 1334 [OP_READ] = { 1335 .op_func = (nfsd4op_func)nfsd4_read, 1336 .op_name = "OP_READ", 1337 }, 1338 [OP_READDIR] = { 1339 .op_func = (nfsd4op_func)nfsd4_readdir, 1340 .op_name = "OP_READDIR", 1341 }, 1342 [OP_READLINK] = { 1343 .op_func = (nfsd4op_func)nfsd4_readlink, 1344 .op_name = "OP_READLINK", 1345 }, 1346 [OP_REMOVE] = { 1347 .op_func = (nfsd4op_func)nfsd4_remove, 1348 .op_name = "OP_REMOVE", 1349 .op_cacheresult = true, 1350 }, 1351 [OP_RENAME] = { 1352 .op_name = "OP_RENAME", 1353 .op_func = (nfsd4op_func)nfsd4_rename, 1354 .op_cacheresult = true, 1355 }, 1356 [OP_RENEW] = { 1357 .op_func = (nfsd4op_func)nfsd4_renew, 1358 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1359 .op_name = "OP_RENEW", 1360 }, 1361 [OP_RESTOREFH] = { 1362 .op_func = (nfsd4op_func)nfsd4_restorefh, 1363 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS 1364 | OP_IS_PUTFH_LIKE, 1365 .op_name = "OP_RESTOREFH", 1366 }, 1367 [OP_SAVEFH] = { 1368 .op_func = (nfsd4op_func)nfsd4_savefh, 1369 .op_flags = OP_HANDLES_WRONGSEC, 1370 .op_name = "OP_SAVEFH", 1371 }, 1372 [OP_SECINFO] = { 1373 .op_func = (nfsd4op_func)nfsd4_secinfo, 1374 .op_flags = OP_HANDLES_WRONGSEC, 1375 .op_name = "OP_SECINFO", 1376 }, 1377 [OP_SETATTR] = { 1378 .op_func = (nfsd4op_func)nfsd4_setattr, 1379 .op_name = "OP_SETATTR", 1380 .op_cacheresult = true, 1381 }, 1382 [OP_SETCLIENTID] = { 1383 .op_func = (nfsd4op_func)nfsd4_setclientid, 1384 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1385 .op_name = "OP_SETCLIENTID", 1386 .op_cacheresult = true, 1387 }, 1388 [OP_SETCLIENTID_CONFIRM] = { 1389 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, 1390 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1391 .op_name = "OP_SETCLIENTID_CONFIRM", 1392 .op_cacheresult = true, 1393 }, 1394 [OP_VERIFY] = { 1395 .op_func = (nfsd4op_func)nfsd4_verify, 1396 .op_name = "OP_VERIFY", 1397 }, 1398 [OP_WRITE] = { 1399 .op_func = (nfsd4op_func)nfsd4_write, 1400 .op_name = "OP_WRITE", 1401 .op_cacheresult = true, 1402 }, 1403 [OP_RELEASE_LOCKOWNER] = { 1404 .op_func = (nfsd4op_func)nfsd4_release_lockowner, 1405 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1406 .op_name = "OP_RELEASE_LOCKOWNER", 1407 }, 1408 1409 /* NFSv4.1 operations */ 1410 [OP_EXCHANGE_ID] = { 1411 .op_func = (nfsd4op_func)nfsd4_exchange_id, 1412 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1413 .op_name = "OP_EXCHANGE_ID", 1414 }, 1415 [OP_BIND_CONN_TO_SESSION] = { 1416 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, 1417 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1418 .op_name = "OP_BIND_CONN_TO_SESSION", 1419 }, 1420 [OP_CREATE_SESSION] = { 1421 .op_func = (nfsd4op_func)nfsd4_create_session, 1422 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1423 .op_name = "OP_CREATE_SESSION", 1424 }, 1425 [OP_DESTROY_SESSION] = { 1426 .op_func = (nfsd4op_func)nfsd4_destroy_session, 1427 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1428 .op_name = "OP_DESTROY_SESSION", 1429 }, 1430 [OP_SEQUENCE] = { 1431 .op_func = (nfsd4op_func)nfsd4_sequence, 1432 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1433 .op_name = "OP_SEQUENCE", 1434 }, 1435 [OP_DESTROY_CLIENTID] = { 1436 .op_func = NULL, 1437 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, 1438 .op_name = "OP_DESTROY_CLIENTID", 1439 }, 1440 [OP_RECLAIM_COMPLETE] = { 1441 .op_func = (nfsd4op_func)nfsd4_reclaim_complete, 1442 .op_flags = ALLOWED_WITHOUT_FH, 1443 .op_name = "OP_RECLAIM_COMPLETE", 1444 }, 1445 [OP_SECINFO_NO_NAME] = { 1446 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, 1447 .op_flags = OP_HANDLES_WRONGSEC, 1448 .op_name = "OP_SECINFO_NO_NAME", 1449 }, 1450 [OP_TEST_STATEID] = { 1451 .op_func = (nfsd4op_func)nfsd4_test_stateid, 1452 .op_flags = ALLOWED_WITHOUT_FH, 1453 .op_name = "OP_TEST_STATEID", 1454 }, 1455 [OP_FREE_STATEID] = { 1456 .op_func = (nfsd4op_func)nfsd4_free_stateid, 1457 .op_flags = ALLOWED_WITHOUT_FH, 1458 .op_name = "OP_FREE_STATEID", 1459 }, 1460 }; 1461 1462 static const char *nfsd4_op_name(unsigned opnum) 1463 { 1464 if (opnum < ARRAY_SIZE(nfsd4_ops)) 1465 return nfsd4_ops[opnum].op_name; 1466 return "unknown_operation"; 1467 } 1468 1469 #define nfsd4_voidres nfsd4_voidargs 1470 struct nfsd4_voidargs { int dummy; }; 1471 1472 static struct svc_procedure nfsd_procedures4[2] = { 1473 [NFSPROC4_NULL] = { 1474 .pc_func = (svc_procfunc) nfsd4_proc_null, 1475 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, 1476 .pc_argsize = sizeof(struct nfsd4_voidargs), 1477 .pc_ressize = sizeof(struct nfsd4_voidres), 1478 .pc_cachetype = RC_NOCACHE, 1479 .pc_xdrressize = 1, 1480 }, 1481 [NFSPROC4_COMPOUND] = { 1482 .pc_func = (svc_procfunc) nfsd4_proc_compound, 1483 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, 1484 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, 1485 .pc_argsize = sizeof(struct nfsd4_compoundargs), 1486 .pc_ressize = sizeof(struct nfsd4_compoundres), 1487 .pc_release = nfsd4_release_compoundargs, 1488 .pc_cachetype = RC_NOCACHE, 1489 .pc_xdrressize = NFSD_BUFSIZE/4, 1490 }, 1491 }; 1492 1493 struct svc_version nfsd_version4 = { 1494 .vs_vers = 4, 1495 .vs_nproc = 2, 1496 .vs_proc = nfsd_procedures4, 1497 .vs_dispatch = nfsd_dispatch, 1498 .vs_xdrsize = NFS4_SVC_XDRSIZE, 1499 }; 1500 1501 /* 1502 * Local variables: 1503 * c-basic-offset: 8 1504 * End: 1505 */ 1506