1 /* 2 * Server-side types 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 */ 36 37 #ifndef _LINUX_NFSD_XDR4_H 38 #define _LINUX_NFSD_XDR4_H 39 40 #include "state.h" 41 #include "nfsd.h" 42 43 #define NFSD4_MAX_TAGLEN 128 44 #define XDR_LEN(n) (((n) + 3) & ~3) 45 46 #define CURRENT_STATE_ID_FLAG (1<<0) 47 #define SAVED_STATE_ID_FLAG (1<<1) 48 49 #define SET_STATE_ID(c, f) ((c)->sid_flags |= (f)) 50 #define HAS_STATE_ID(c, f) ((c)->sid_flags & (f)) 51 #define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f)) 52 53 struct nfsd4_compound_state { 54 struct svc_fh current_fh; 55 struct svc_fh save_fh; 56 struct nfs4_stateowner *replay_owner; 57 struct nfs4_client *clp; 58 /* For sessions DRC */ 59 struct nfsd4_session *session; 60 struct nfsd4_slot *slot; 61 int data_offset; 62 bool spo_must_allowed; 63 size_t iovlen; 64 u32 minorversion; 65 __be32 status; 66 stateid_t current_stateid; 67 stateid_t save_stateid; 68 /* to indicate current and saved state id presents */ 69 u32 sid_flags; 70 }; 71 72 static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs) 73 { 74 return cs->slot != NULL; 75 } 76 77 struct nfsd4_change_info { 78 u32 atomic; 79 bool change_supported; 80 u32 before_ctime_sec; 81 u32 before_ctime_nsec; 82 u64 before_change; 83 u32 after_ctime_sec; 84 u32 after_ctime_nsec; 85 u64 after_change; 86 }; 87 88 struct nfsd4_access { 89 u32 ac_req_access; /* request */ 90 u32 ac_supported; /* response */ 91 u32 ac_resp_access; /* response */ 92 }; 93 94 struct nfsd4_close { 95 u32 cl_seqid; /* request */ 96 stateid_t cl_stateid; /* request+response */ 97 }; 98 99 struct nfsd4_commit { 100 u64 co_offset; /* request */ 101 u32 co_count; /* request */ 102 nfs4_verifier co_verf; /* response */ 103 }; 104 105 struct nfsd4_create { 106 u32 cr_namelen; /* request */ 107 char * cr_name; /* request */ 108 u32 cr_type; /* request */ 109 union { /* request */ 110 struct { 111 u32 datalen; 112 char *data; 113 } link; /* NF4LNK */ 114 struct { 115 u32 specdata1; 116 u32 specdata2; 117 } dev; /* NF4BLK, NF4CHR */ 118 } u; 119 u32 cr_bmval[3]; /* request */ 120 struct iattr cr_iattr; /* request */ 121 struct nfsd4_change_info cr_cinfo; /* response */ 122 struct nfs4_acl *cr_acl; 123 struct xdr_netobj cr_label; 124 }; 125 #define cr_datalen u.link.datalen 126 #define cr_data u.link.data 127 #define cr_specdata1 u.dev.specdata1 128 #define cr_specdata2 u.dev.specdata2 129 130 struct nfsd4_delegreturn { 131 stateid_t dr_stateid; 132 }; 133 134 struct nfsd4_getattr { 135 u32 ga_bmval[3]; /* request */ 136 struct svc_fh *ga_fhp; /* response */ 137 }; 138 139 struct nfsd4_link { 140 u32 li_namelen; /* request */ 141 char * li_name; /* request */ 142 struct nfsd4_change_info li_cinfo; /* response */ 143 }; 144 145 struct nfsd4_lock_denied { 146 clientid_t ld_clientid; 147 struct xdr_netobj ld_owner; 148 u64 ld_start; 149 u64 ld_length; 150 u32 ld_type; 151 }; 152 153 struct nfsd4_lock { 154 /* request */ 155 u32 lk_type; 156 u32 lk_reclaim; /* boolean */ 157 u64 lk_offset; 158 u64 lk_length; 159 u32 lk_is_new; 160 union { 161 struct { 162 u32 open_seqid; 163 stateid_t open_stateid; 164 u32 lock_seqid; 165 clientid_t clientid; 166 struct xdr_netobj owner; 167 } new; 168 struct { 169 stateid_t lock_stateid; 170 u32 lock_seqid; 171 } old; 172 } v; 173 174 /* response */ 175 union { 176 struct { 177 stateid_t stateid; 178 } ok; 179 struct nfsd4_lock_denied denied; 180 } u; 181 }; 182 #define lk_new_open_seqid v.new.open_seqid 183 #define lk_new_open_stateid v.new.open_stateid 184 #define lk_new_lock_seqid v.new.lock_seqid 185 #define lk_new_clientid v.new.clientid 186 #define lk_new_owner v.new.owner 187 #define lk_old_lock_stateid v.old.lock_stateid 188 #define lk_old_lock_seqid v.old.lock_seqid 189 190 #define lk_resp_stateid u.ok.stateid 191 #define lk_denied u.denied 192 193 194 struct nfsd4_lockt { 195 u32 lt_type; 196 clientid_t lt_clientid; 197 struct xdr_netobj lt_owner; 198 u64 lt_offset; 199 u64 lt_length; 200 struct nfsd4_lock_denied lt_denied; 201 }; 202 203 204 struct nfsd4_locku { 205 u32 lu_type; 206 u32 lu_seqid; 207 stateid_t lu_stateid; 208 u64 lu_offset; 209 u64 lu_length; 210 }; 211 212 213 struct nfsd4_lookup { 214 u32 lo_len; /* request */ 215 char * lo_name; /* request */ 216 }; 217 218 struct nfsd4_putfh { 219 u32 pf_fhlen; /* request */ 220 char *pf_fhval; /* request */ 221 }; 222 223 struct nfsd4_open { 224 u32 op_claim_type; /* request */ 225 struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */ 226 u32 op_delegate_type; /* request - CLAIM_PREV only */ 227 stateid_t op_delegate_stateid; /* request - response */ 228 u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */ 229 u32 op_create; /* request */ 230 u32 op_createmode; /* request */ 231 u32 op_bmval[3]; /* request */ 232 struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */ 233 nfs4_verifier op_verf __attribute__((aligned(32))); 234 /* EXCLUSIVE4 */ 235 clientid_t op_clientid; /* request */ 236 struct xdr_netobj op_owner; /* request */ 237 u32 op_seqid; /* request */ 238 u32 op_share_access; /* request */ 239 u32 op_share_deny; /* request */ 240 u32 op_deleg_want; /* request */ 241 stateid_t op_stateid; /* response */ 242 __be32 op_xdr_error; /* see nfsd4_open_omfg() */ 243 u32 op_recall; /* recall */ 244 struct nfsd4_change_info op_cinfo; /* response */ 245 u32 op_rflags; /* response */ 246 bool op_truncate; /* used during processing */ 247 bool op_created; /* used during processing */ 248 struct nfs4_openowner *op_openowner; /* used during processing */ 249 struct nfs4_file *op_file; /* used during processing */ 250 struct nfs4_ol_stateid *op_stp; /* used during processing */ 251 struct nfs4_clnt_odstate *op_odstate; /* used during processing */ 252 struct nfs4_acl *op_acl; 253 struct xdr_netobj op_label; 254 }; 255 256 struct nfsd4_open_confirm { 257 stateid_t oc_req_stateid /* request */; 258 u32 oc_seqid /* request */; 259 stateid_t oc_resp_stateid /* response */; 260 }; 261 262 struct nfsd4_open_downgrade { 263 stateid_t od_stateid; 264 u32 od_seqid; 265 u32 od_share_access; /* request */ 266 u32 od_deleg_want; /* request */ 267 u32 od_share_deny; /* request */ 268 }; 269 270 271 struct nfsd4_read { 272 stateid_t rd_stateid; /* request */ 273 u64 rd_offset; /* request */ 274 u32 rd_length; /* request */ 275 int rd_vlen; 276 struct file *rd_filp; 277 bool rd_tmp_file; 278 279 struct svc_rqst *rd_rqstp; /* response */ 280 struct svc_fh * rd_fhp; /* response */ 281 }; 282 283 struct nfsd4_readdir { 284 u64 rd_cookie; /* request */ 285 nfs4_verifier rd_verf; /* request */ 286 u32 rd_dircount; /* request */ 287 u32 rd_maxcount; /* request */ 288 u32 rd_bmval[3]; /* request */ 289 struct svc_rqst *rd_rqstp; /* response */ 290 struct svc_fh * rd_fhp; /* response */ 291 292 struct readdir_cd common; 293 struct xdr_stream *xdr; 294 int cookie_offset; 295 }; 296 297 struct nfsd4_release_lockowner { 298 clientid_t rl_clientid; 299 struct xdr_netobj rl_owner; 300 }; 301 struct nfsd4_readlink { 302 struct svc_rqst *rl_rqstp; /* request */ 303 struct svc_fh * rl_fhp; /* request */ 304 }; 305 306 struct nfsd4_remove { 307 u32 rm_namelen; /* request */ 308 char * rm_name; /* request */ 309 struct nfsd4_change_info rm_cinfo; /* response */ 310 }; 311 312 struct nfsd4_rename { 313 u32 rn_snamelen; /* request */ 314 char * rn_sname; /* request */ 315 u32 rn_tnamelen; /* request */ 316 char * rn_tname; /* request */ 317 struct nfsd4_change_info rn_sinfo; /* response */ 318 struct nfsd4_change_info rn_tinfo; /* response */ 319 }; 320 321 struct nfsd4_secinfo { 322 u32 si_namelen; /* request */ 323 char *si_name; /* request */ 324 struct svc_export *si_exp; /* response */ 325 }; 326 327 struct nfsd4_secinfo_no_name { 328 u32 sin_style; /* request */ 329 struct svc_export *sin_exp; /* response */ 330 }; 331 332 struct nfsd4_setattr { 333 stateid_t sa_stateid; /* request */ 334 u32 sa_bmval[3]; /* request */ 335 struct iattr sa_iattr; /* request */ 336 struct nfs4_acl *sa_acl; 337 struct xdr_netobj sa_label; 338 }; 339 340 struct nfsd4_setclientid { 341 nfs4_verifier se_verf; /* request */ 342 struct xdr_netobj se_name; 343 u32 se_callback_prog; /* request */ 344 u32 se_callback_netid_len; /* request */ 345 char * se_callback_netid_val; /* request */ 346 u32 se_callback_addr_len; /* request */ 347 char * se_callback_addr_val; /* request */ 348 u32 se_callback_ident; /* request */ 349 clientid_t se_clientid; /* response */ 350 nfs4_verifier se_confirm; /* response */ 351 }; 352 353 struct nfsd4_setclientid_confirm { 354 clientid_t sc_clientid; 355 nfs4_verifier sc_confirm; 356 }; 357 358 struct nfsd4_saved_compoundargs { 359 __be32 *p; 360 __be32 *end; 361 int pagelen; 362 struct page **pagelist; 363 }; 364 365 struct nfsd4_test_stateid_id { 366 __be32 ts_id_status; 367 stateid_t ts_id_stateid; 368 struct list_head ts_id_list; 369 }; 370 371 struct nfsd4_test_stateid { 372 u32 ts_num_ids; 373 struct list_head ts_stateid_list; 374 }; 375 376 struct nfsd4_free_stateid { 377 stateid_t fr_stateid; /* request */ 378 }; 379 380 /* also used for NVERIFY */ 381 struct nfsd4_verify { 382 u32 ve_bmval[3]; /* request */ 383 u32 ve_attrlen; /* request */ 384 char * ve_attrval; /* request */ 385 }; 386 387 struct nfsd4_write { 388 stateid_t wr_stateid; /* request */ 389 u64 wr_offset; /* request */ 390 u32 wr_stable_how; /* request */ 391 u32 wr_buflen; /* request */ 392 struct kvec wr_head; 393 struct page ** wr_pagelist; /* request */ 394 395 u32 wr_bytes_written; /* response */ 396 u32 wr_how_written; /* response */ 397 nfs4_verifier wr_verifier; /* response */ 398 }; 399 400 struct nfsd4_exchange_id { 401 nfs4_verifier verifier; 402 struct xdr_netobj clname; 403 u32 flags; 404 clientid_t clientid; 405 u32 seqid; 406 int spa_how; 407 u32 spo_must_enforce[3]; 408 u32 spo_must_allow[3]; 409 }; 410 411 struct nfsd4_sequence { 412 struct nfs4_sessionid sessionid; /* request/response */ 413 u32 seqid; /* request/response */ 414 u32 slotid; /* request/response */ 415 u32 maxslots; /* request/response */ 416 u32 cachethis; /* request */ 417 #if 0 418 u32 target_maxslots; /* response */ 419 #endif /* not yet */ 420 u32 status_flags; /* response */ 421 }; 422 423 struct nfsd4_destroy_session { 424 struct nfs4_sessionid sessionid; 425 }; 426 427 struct nfsd4_destroy_clientid { 428 clientid_t clientid; 429 }; 430 431 struct nfsd4_reclaim_complete { 432 u32 rca_one_fs; 433 }; 434 435 struct nfsd4_deviceid { 436 u64 fsid_idx; 437 u32 generation; 438 u32 pad; 439 }; 440 441 struct nfsd4_layout_seg { 442 u32 iomode; 443 u64 offset; 444 u64 length; 445 }; 446 447 struct nfsd4_getdeviceinfo { 448 struct nfsd4_deviceid gd_devid; /* request */ 449 u32 gd_layout_type; /* request */ 450 u32 gd_maxcount; /* request */ 451 u32 gd_notify_types;/* request - response */ 452 void *gd_device; /* response */ 453 }; 454 455 struct nfsd4_layoutget { 456 u64 lg_minlength; /* request */ 457 u32 lg_signal; /* request */ 458 u32 lg_layout_type; /* request */ 459 u32 lg_maxcount; /* request */ 460 stateid_t lg_sid; /* request/response */ 461 struct nfsd4_layout_seg lg_seg; /* request/response */ 462 void *lg_content; /* response */ 463 }; 464 465 struct nfsd4_layoutcommit { 466 stateid_t lc_sid; /* request */ 467 struct nfsd4_layout_seg lc_seg; /* request */ 468 u32 lc_reclaim; /* request */ 469 u32 lc_newoffset; /* request */ 470 u64 lc_last_wr; /* request */ 471 struct timespec lc_mtime; /* request */ 472 u32 lc_layout_type; /* request */ 473 u32 lc_up_len; /* layout length */ 474 void *lc_up_layout; /* decoded by callback */ 475 u32 lc_size_chg; /* boolean for response */ 476 u64 lc_newsize; /* response */ 477 }; 478 479 struct nfsd4_layoutreturn { 480 u32 lr_return_type; /* request */ 481 u32 lr_layout_type; /* request */ 482 struct nfsd4_layout_seg lr_seg; /* request */ 483 u32 lr_reclaim; /* request */ 484 u32 lrf_body_len; /* request */ 485 void *lrf_body; /* request */ 486 stateid_t lr_sid; /* request/response */ 487 u32 lrs_present; /* response */ 488 }; 489 490 struct nfsd4_fallocate { 491 /* request */ 492 stateid_t falloc_stateid; 493 loff_t falloc_offset; 494 u64 falloc_length; 495 }; 496 497 struct nfsd4_clone { 498 /* request */ 499 stateid_t cl_src_stateid; 500 stateid_t cl_dst_stateid; 501 u64 cl_src_pos; 502 u64 cl_dst_pos; 503 u64 cl_count; 504 }; 505 506 struct nfsd42_write_res { 507 u64 wr_bytes_written; 508 u32 wr_stable_how; 509 nfs4_verifier wr_verifier; 510 }; 511 512 struct nfsd4_copy { 513 /* request */ 514 stateid_t cp_src_stateid; 515 stateid_t cp_dst_stateid; 516 u64 cp_src_pos; 517 u64 cp_dst_pos; 518 u64 cp_count; 519 520 /* both */ 521 bool cp_consecutive; 522 bool cp_synchronous; 523 524 /* response */ 525 struct nfsd42_write_res cp_res; 526 }; 527 528 struct nfsd4_seek { 529 /* request */ 530 stateid_t seek_stateid; 531 loff_t seek_offset; 532 u32 seek_whence; 533 534 /* response */ 535 u32 seek_eof; 536 loff_t seek_pos; 537 }; 538 539 struct nfsd4_op { 540 int opnum; 541 const struct nfsd4_operation * opdesc; 542 __be32 status; 543 union nfsd4_op_u { 544 struct nfsd4_access access; 545 struct nfsd4_close close; 546 struct nfsd4_commit commit; 547 struct nfsd4_create create; 548 struct nfsd4_delegreturn delegreturn; 549 struct nfsd4_getattr getattr; 550 struct svc_fh * getfh; 551 struct nfsd4_link link; 552 struct nfsd4_lock lock; 553 struct nfsd4_lockt lockt; 554 struct nfsd4_locku locku; 555 struct nfsd4_lookup lookup; 556 struct nfsd4_verify nverify; 557 struct nfsd4_open open; 558 struct nfsd4_open_confirm open_confirm; 559 struct nfsd4_open_downgrade open_downgrade; 560 struct nfsd4_putfh putfh; 561 struct nfsd4_read read; 562 struct nfsd4_readdir readdir; 563 struct nfsd4_readlink readlink; 564 struct nfsd4_remove remove; 565 struct nfsd4_rename rename; 566 clientid_t renew; 567 struct nfsd4_secinfo secinfo; 568 struct nfsd4_setattr setattr; 569 struct nfsd4_setclientid setclientid; 570 struct nfsd4_setclientid_confirm setclientid_confirm; 571 struct nfsd4_verify verify; 572 struct nfsd4_write write; 573 struct nfsd4_release_lockowner release_lockowner; 574 575 /* NFSv4.1 */ 576 struct nfsd4_exchange_id exchange_id; 577 struct nfsd4_backchannel_ctl backchannel_ctl; 578 struct nfsd4_bind_conn_to_session bind_conn_to_session; 579 struct nfsd4_create_session create_session; 580 struct nfsd4_destroy_session destroy_session; 581 struct nfsd4_destroy_clientid destroy_clientid; 582 struct nfsd4_sequence sequence; 583 struct nfsd4_reclaim_complete reclaim_complete; 584 struct nfsd4_test_stateid test_stateid; 585 struct nfsd4_free_stateid free_stateid; 586 struct nfsd4_getdeviceinfo getdeviceinfo; 587 struct nfsd4_layoutget layoutget; 588 struct nfsd4_layoutcommit layoutcommit; 589 struct nfsd4_layoutreturn layoutreturn; 590 struct nfsd4_secinfo_no_name secinfo_no_name; 591 592 /* NFSv4.2 */ 593 struct nfsd4_fallocate allocate; 594 struct nfsd4_fallocate deallocate; 595 struct nfsd4_clone clone; 596 struct nfsd4_copy copy; 597 struct nfsd4_seek seek; 598 } u; 599 struct nfs4_replay * replay; 600 }; 601 602 bool nfsd4_cache_this_op(struct nfsd4_op *); 603 604 /* 605 * Memory needed just for the duration of processing one compound: 606 */ 607 struct svcxdr_tmpbuf { 608 struct svcxdr_tmpbuf *next; 609 char buf[]; 610 }; 611 612 struct nfsd4_compoundargs { 613 /* scratch variables for XDR decode */ 614 __be32 * p; 615 __be32 * end; 616 struct page ** pagelist; 617 int pagelen; 618 bool tail; 619 __be32 tmp[8]; 620 __be32 * tmpp; 621 struct svcxdr_tmpbuf *to_free; 622 623 struct svc_rqst *rqstp; 624 625 u32 taglen; 626 char * tag; 627 u32 minorversion; 628 u32 opcnt; 629 struct nfsd4_op *ops; 630 struct nfsd4_op iops[8]; 631 int cachetype; 632 }; 633 634 struct nfsd4_compoundres { 635 /* scratch variables for XDR encode */ 636 struct xdr_stream xdr; 637 struct svc_rqst * rqstp; 638 639 u32 taglen; 640 char * tag; 641 u32 opcnt; 642 __be32 * tagp; /* tag, opcount encode location */ 643 struct nfsd4_compound_state cstate; 644 }; 645 646 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp) 647 { 648 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; 649 return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE; 650 } 651 652 /* 653 * The session reply cache only needs to cache replies that the client 654 * actually asked us to. But it's almost free for us to cache compounds 655 * consisting of only a SEQUENCE op, so we may as well cache those too. 656 * Also, the protocol doesn't give us a convenient response in the case 657 * of a replay of a solo SEQUENCE op that wasn't cached 658 * (RETRY_UNCACHED_REP can only be returned in the second op of a 659 * compound). 660 */ 661 static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp) 662 { 663 return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS) 664 || nfsd4_is_solo_sequence(resp); 665 } 666 667 static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp) 668 { 669 struct nfsd4_compoundres *resp = rqstp->rq_resp; 670 struct nfsd4_compoundargs *argp = rqstp->rq_argp; 671 672 return argp->opcnt == resp->opcnt; 673 } 674 675 const struct nfsd4_operation *OPDESC(struct nfsd4_op *op); 676 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op); 677 void warn_on_nonidempotent_op(struct nfsd4_op *op); 678 679 #define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs) 680 681 static inline void 682 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp) 683 { 684 BUG_ON(!fhp->fh_pre_saved); 685 cinfo->atomic = (u32)fhp->fh_post_saved; 686 cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry)); 687 688 cinfo->before_change = fhp->fh_pre_change; 689 cinfo->after_change = fhp->fh_post_change; 690 cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec; 691 cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec; 692 cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec; 693 cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec; 694 695 } 696 697 698 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp); 699 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *); 700 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *); 701 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *); 702 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32); 703 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *); 704 void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op); 705 __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, 706 struct svc_fh *fhp, struct svc_export *exp, 707 struct dentry *dentry, 708 u32 *bmval, struct svc_rqst *, int ignore_crossmnt); 709 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp, 710 struct nfsd4_compound_state *, union nfsd4_op_u *u); 711 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp, 712 struct nfsd4_compound_state *, union nfsd4_op_u *u); 713 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp, 714 struct nfsd4_compound_state *, union nfsd4_op_u *u); 715 extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, 716 struct nfsd4_compound_state *, union nfsd4_op_u *u); 717 extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, 718 struct nfsd4_compound_state *, union nfsd4_op_u *u); 719 extern __be32 nfsd4_create_session(struct svc_rqst *, 720 struct nfsd4_compound_state *, union nfsd4_op_u *u); 721 extern __be32 nfsd4_sequence(struct svc_rqst *, 722 struct nfsd4_compound_state *, union nfsd4_op_u *u); 723 extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp); 724 extern __be32 nfsd4_destroy_session(struct svc_rqst *, 725 struct nfsd4_compound_state *, union nfsd4_op_u *u); 726 extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, 727 union nfsd4_op_u *u); 728 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, 729 union nfsd4_op_u *u); 730 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *, 731 struct nfsd4_open *open, struct nfsd_net *nn); 732 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp, 733 struct svc_fh *current_fh, struct nfsd4_open *open); 734 extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate); 735 extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate, 736 struct nfsd4_open *open); 737 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp, 738 struct nfsd4_compound_state *, union nfsd4_op_u *u); 739 extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 740 union nfsd4_op_u *u); 741 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp, 742 struct nfsd4_compound_state *, union nfsd4_op_u *u); 743 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 744 union nfsd4_op_u *u); 745 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 746 union nfsd4_op_u *u); 747 extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 748 union nfsd4_op_u *u); 749 extern __be32 750 nfsd4_release_lockowner(struct svc_rqst *rqstp, 751 struct nfsd4_compound_state *, union nfsd4_op_u *u); 752 extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp); 753 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp, 754 struct nfsd4_compound_state *, union nfsd4_op_u *u); 755 extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 756 union nfsd4_op_u *u); 757 extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp, 758 struct nfsd4_compound_state *, union nfsd4_op_u *); 759 extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp, 760 struct nfsd4_compound_state *, union nfsd4_op_u *); 761 extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr); 762 763 enum nfsd4_op_flags { 764 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ 765 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ 766 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ 767 /* For rfc 5661 section 2.6.3.1.1: */ 768 OP_HANDLES_WRONGSEC = 1 << 3, 769 OP_IS_PUTFH_LIKE = 1 << 4, 770 /* 771 * These are the ops whose result size we estimate before 772 * encoding, to avoid performing an op then not being able to 773 * respond or cache a response. This includes writes and setattrs 774 * as well as the operations usually called "nonidempotent": 775 */ 776 OP_MODIFIES_SOMETHING = 1 << 5, 777 /* 778 * Cache compounds containing these ops in the xid-based drc: 779 * We use the DRC for compounds containing non-idempotent 780 * operations, *except* those that are 4.1-specific (since 781 * sessions provide their own EOS), and except for stateful 782 * operations other than setclientid and setclientid_confirm 783 * (since sequence numbers provide EOS for open, lock, etc in 784 * the v4.0 case). 785 */ 786 OP_CACHEME = 1 << 6, 787 /* 788 * These are ops which clear current state id. 789 */ 790 OP_CLEAR_STATEID = 1 << 7, 791 /* Most ops return only an error on failure; some may do more: */ 792 OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8, 793 }; 794 795 struct nfsd4_operation { 796 __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *, 797 union nfsd4_op_u *); 798 void (*op_release)(union nfsd4_op_u *); 799 u32 op_flags; 800 char *op_name; 801 /* Try to get response size before operation */ 802 u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *); 803 void (*op_get_currentstateid)(struct nfsd4_compound_state *, 804 union nfsd4_op_u *); 805 void (*op_set_currentstateid)(struct nfsd4_compound_state *, 806 union nfsd4_op_u *); 807 }; 808 809 810 #endif 811 812 /* 813 * Local variables: 814 * c-basic-offset: 8 815 * End: 816 */ 817