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_CSTATE_FLAG(c, f) ((c)->sid_flags |= (f)) 50 #define HAS_CSTATE_FLAG(c, f) ((c)->sid_flags & (f)) 51 #define CLEAR_CSTATE_FLAG(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 struct kvec first; 114 } link; /* NF4LNK */ 115 struct { 116 u32 specdata1; 117 u32 specdata2; 118 } dev; /* NF4BLK, NF4CHR */ 119 } u; 120 u32 cr_bmval[3]; /* request */ 121 struct iattr cr_iattr; /* request */ 122 int cr_umask; /* request */ 123 struct nfsd4_change_info cr_cinfo; /* response */ 124 struct nfs4_acl *cr_acl; 125 struct xdr_netobj cr_label; 126 }; 127 #define cr_datalen u.link.datalen 128 #define cr_data u.link.data 129 #define cr_first u.link.first 130 #define cr_specdata1 u.dev.specdata1 131 #define cr_specdata2 u.dev.specdata2 132 133 struct nfsd4_delegreturn { 134 stateid_t dr_stateid; 135 }; 136 137 struct nfsd4_getattr { 138 u32 ga_bmval[3]; /* request */ 139 struct svc_fh *ga_fhp; /* response */ 140 }; 141 142 struct nfsd4_link { 143 u32 li_namelen; /* request */ 144 char * li_name; /* request */ 145 struct nfsd4_change_info li_cinfo; /* response */ 146 }; 147 148 struct nfsd4_lock_denied { 149 clientid_t ld_clientid; 150 struct xdr_netobj ld_owner; 151 u64 ld_start; 152 u64 ld_length; 153 u32 ld_type; 154 }; 155 156 struct nfsd4_lock { 157 /* request */ 158 u32 lk_type; 159 u32 lk_reclaim; /* boolean */ 160 u64 lk_offset; 161 u64 lk_length; 162 u32 lk_is_new; 163 union { 164 struct { 165 u32 open_seqid; 166 stateid_t open_stateid; 167 u32 lock_seqid; 168 clientid_t clientid; 169 struct xdr_netobj owner; 170 } new; 171 struct { 172 stateid_t lock_stateid; 173 u32 lock_seqid; 174 } old; 175 } v; 176 177 /* response */ 178 union { 179 struct { 180 stateid_t stateid; 181 } ok; 182 struct nfsd4_lock_denied denied; 183 } u; 184 }; 185 #define lk_new_open_seqid v.new.open_seqid 186 #define lk_new_open_stateid v.new.open_stateid 187 #define lk_new_lock_seqid v.new.lock_seqid 188 #define lk_new_clientid v.new.clientid 189 #define lk_new_owner v.new.owner 190 #define lk_old_lock_stateid v.old.lock_stateid 191 #define lk_old_lock_seqid v.old.lock_seqid 192 193 #define lk_resp_stateid u.ok.stateid 194 #define lk_denied u.denied 195 196 197 struct nfsd4_lockt { 198 u32 lt_type; 199 clientid_t lt_clientid; 200 struct xdr_netobj lt_owner; 201 u64 lt_offset; 202 u64 lt_length; 203 struct nfsd4_lock_denied lt_denied; 204 }; 205 206 207 struct nfsd4_locku { 208 u32 lu_type; 209 u32 lu_seqid; 210 stateid_t lu_stateid; 211 u64 lu_offset; 212 u64 lu_length; 213 }; 214 215 216 struct nfsd4_lookup { 217 u32 lo_len; /* request */ 218 char * lo_name; /* request */ 219 }; 220 221 struct nfsd4_putfh { 222 u32 pf_fhlen; /* request */ 223 char *pf_fhval; /* request */ 224 bool no_verify; /* represents foreigh fh */ 225 }; 226 227 struct nfsd4_open { 228 u32 op_claim_type; /* request */ 229 struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */ 230 u32 op_delegate_type; /* request - CLAIM_PREV only */ 231 stateid_t op_delegate_stateid; /* request - response */ 232 u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */ 233 u32 op_create; /* request */ 234 u32 op_createmode; /* request */ 235 int op_umask; /* request */ 236 u32 op_bmval[3]; /* request */ 237 struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */ 238 nfs4_verifier op_verf __attribute__((aligned(32))); 239 /* EXCLUSIVE4 */ 240 clientid_t op_clientid; /* request */ 241 struct xdr_netobj op_owner; /* request */ 242 u32 op_seqid; /* request */ 243 u32 op_share_access; /* request */ 244 u32 op_share_deny; /* request */ 245 u32 op_deleg_want; /* request */ 246 stateid_t op_stateid; /* response */ 247 __be32 op_xdr_error; /* see nfsd4_open_omfg() */ 248 u32 op_recall; /* recall */ 249 struct nfsd4_change_info op_cinfo; /* response */ 250 u32 op_rflags; /* response */ 251 bool op_truncate; /* used during processing */ 252 bool op_created; /* used during processing */ 253 struct nfs4_openowner *op_openowner; /* used during processing */ 254 struct nfs4_file *op_file; /* used during processing */ 255 struct nfs4_ol_stateid *op_stp; /* used during processing */ 256 struct nfs4_clnt_odstate *op_odstate; /* used during processing */ 257 struct nfs4_acl *op_acl; 258 struct xdr_netobj op_label; 259 }; 260 261 struct nfsd4_open_confirm { 262 stateid_t oc_req_stateid /* request */; 263 u32 oc_seqid /* request */; 264 stateid_t oc_resp_stateid /* response */; 265 }; 266 267 struct nfsd4_open_downgrade { 268 stateid_t od_stateid; 269 u32 od_seqid; 270 u32 od_share_access; /* request */ 271 u32 od_deleg_want; /* request */ 272 u32 od_share_deny; /* request */ 273 }; 274 275 276 struct nfsd4_read { 277 stateid_t rd_stateid; /* request */ 278 u64 rd_offset; /* request */ 279 u32 rd_length; /* request */ 280 int rd_vlen; 281 struct nfsd_file *rd_nf; 282 283 struct svc_rqst *rd_rqstp; /* response */ 284 struct svc_fh *rd_fhp; /* response */ 285 }; 286 287 struct nfsd4_readdir { 288 u64 rd_cookie; /* request */ 289 nfs4_verifier rd_verf; /* request */ 290 u32 rd_dircount; /* request */ 291 u32 rd_maxcount; /* request */ 292 u32 rd_bmval[3]; /* request */ 293 struct svc_rqst *rd_rqstp; /* response */ 294 struct svc_fh * rd_fhp; /* response */ 295 296 struct readdir_cd common; 297 struct xdr_stream *xdr; 298 int cookie_offset; 299 }; 300 301 struct nfsd4_release_lockowner { 302 clientid_t rl_clientid; 303 struct xdr_netobj rl_owner; 304 }; 305 struct nfsd4_readlink { 306 struct svc_rqst *rl_rqstp; /* request */ 307 struct svc_fh * rl_fhp; /* request */ 308 }; 309 310 struct nfsd4_remove { 311 u32 rm_namelen; /* request */ 312 char * rm_name; /* request */ 313 struct nfsd4_change_info rm_cinfo; /* response */ 314 }; 315 316 struct nfsd4_rename { 317 u32 rn_snamelen; /* request */ 318 char * rn_sname; /* request */ 319 u32 rn_tnamelen; /* request */ 320 char * rn_tname; /* request */ 321 struct nfsd4_change_info rn_sinfo; /* response */ 322 struct nfsd4_change_info rn_tinfo; /* response */ 323 }; 324 325 struct nfsd4_secinfo { 326 u32 si_namelen; /* request */ 327 char *si_name; /* request */ 328 struct svc_export *si_exp; /* response */ 329 }; 330 331 struct nfsd4_secinfo_no_name { 332 u32 sin_style; /* request */ 333 struct svc_export *sin_exp; /* response */ 334 }; 335 336 struct nfsd4_setattr { 337 stateid_t sa_stateid; /* request */ 338 u32 sa_bmval[3]; /* request */ 339 struct iattr sa_iattr; /* request */ 340 struct nfs4_acl *sa_acl; 341 struct xdr_netobj sa_label; 342 }; 343 344 struct nfsd4_setclientid { 345 nfs4_verifier se_verf; /* request */ 346 struct xdr_netobj se_name; 347 u32 se_callback_prog; /* request */ 348 u32 se_callback_netid_len; /* request */ 349 char * se_callback_netid_val; /* request */ 350 u32 se_callback_addr_len; /* request */ 351 char * se_callback_addr_val; /* request */ 352 u32 se_callback_ident; /* request */ 353 clientid_t se_clientid; /* response */ 354 nfs4_verifier se_confirm; /* response */ 355 }; 356 357 struct nfsd4_setclientid_confirm { 358 clientid_t sc_clientid; 359 nfs4_verifier sc_confirm; 360 }; 361 362 struct nfsd4_saved_compoundargs { 363 __be32 *p; 364 __be32 *end; 365 int pagelen; 366 struct page **pagelist; 367 }; 368 369 struct nfsd4_test_stateid_id { 370 __be32 ts_id_status; 371 stateid_t ts_id_stateid; 372 struct list_head ts_id_list; 373 }; 374 375 struct nfsd4_test_stateid { 376 u32 ts_num_ids; 377 struct list_head ts_stateid_list; 378 }; 379 380 struct nfsd4_free_stateid { 381 stateid_t fr_stateid; /* request */ 382 }; 383 384 /* also used for NVERIFY */ 385 struct nfsd4_verify { 386 u32 ve_bmval[3]; /* request */ 387 u32 ve_attrlen; /* request */ 388 char * ve_attrval; /* request */ 389 }; 390 391 struct nfsd4_write { 392 stateid_t wr_stateid; /* request */ 393 u64 wr_offset; /* request */ 394 u32 wr_stable_how; /* request */ 395 u32 wr_buflen; /* request */ 396 struct kvec wr_head; 397 struct page ** wr_pagelist; /* request */ 398 399 u32 wr_bytes_written; /* response */ 400 u32 wr_how_written; /* response */ 401 nfs4_verifier wr_verifier; /* response */ 402 }; 403 404 struct nfsd4_exchange_id { 405 nfs4_verifier verifier; 406 struct xdr_netobj clname; 407 u32 flags; 408 clientid_t clientid; 409 u32 seqid; 410 int spa_how; 411 u32 spo_must_enforce[3]; 412 u32 spo_must_allow[3]; 413 struct xdr_netobj nii_domain; 414 struct xdr_netobj nii_name; 415 struct timespec64 nii_time; 416 }; 417 418 struct nfsd4_sequence { 419 struct nfs4_sessionid sessionid; /* request/response */ 420 u32 seqid; /* request/response */ 421 u32 slotid; /* request/response */ 422 u32 maxslots; /* request/response */ 423 u32 cachethis; /* request */ 424 #if 0 425 u32 target_maxslots; /* response */ 426 #endif /* not yet */ 427 u32 status_flags; /* response */ 428 }; 429 430 struct nfsd4_destroy_session { 431 struct nfs4_sessionid sessionid; 432 }; 433 434 struct nfsd4_destroy_clientid { 435 clientid_t clientid; 436 }; 437 438 struct nfsd4_reclaim_complete { 439 u32 rca_one_fs; 440 }; 441 442 struct nfsd4_deviceid { 443 u64 fsid_idx; 444 u32 generation; 445 u32 pad; 446 }; 447 448 struct nfsd4_layout_seg { 449 u32 iomode; 450 u64 offset; 451 u64 length; 452 }; 453 454 struct nfsd4_getdeviceinfo { 455 struct nfsd4_deviceid gd_devid; /* request */ 456 u32 gd_layout_type; /* request */ 457 u32 gd_maxcount; /* request */ 458 u32 gd_notify_types;/* request - response */ 459 void *gd_device; /* response */ 460 }; 461 462 struct nfsd4_layoutget { 463 u64 lg_minlength; /* request */ 464 u32 lg_signal; /* request */ 465 u32 lg_layout_type; /* request */ 466 u32 lg_maxcount; /* request */ 467 stateid_t lg_sid; /* request/response */ 468 struct nfsd4_layout_seg lg_seg; /* request/response */ 469 void *lg_content; /* response */ 470 }; 471 472 struct nfsd4_layoutcommit { 473 stateid_t lc_sid; /* request */ 474 struct nfsd4_layout_seg lc_seg; /* request */ 475 u32 lc_reclaim; /* request */ 476 u32 lc_newoffset; /* request */ 477 u64 lc_last_wr; /* request */ 478 struct timespec64 lc_mtime; /* request */ 479 u32 lc_layout_type; /* request */ 480 u32 lc_up_len; /* layout length */ 481 void *lc_up_layout; /* decoded by callback */ 482 u32 lc_size_chg; /* boolean for response */ 483 u64 lc_newsize; /* response */ 484 }; 485 486 struct nfsd4_layoutreturn { 487 u32 lr_return_type; /* request */ 488 u32 lr_layout_type; /* request */ 489 struct nfsd4_layout_seg lr_seg; /* request */ 490 u32 lr_reclaim; /* request */ 491 u32 lrf_body_len; /* request */ 492 void *lrf_body; /* request */ 493 stateid_t lr_sid; /* request/response */ 494 u32 lrs_present; /* response */ 495 }; 496 497 struct nfsd4_fallocate { 498 /* request */ 499 stateid_t falloc_stateid; 500 loff_t falloc_offset; 501 u64 falloc_length; 502 }; 503 504 struct nfsd4_clone { 505 /* request */ 506 stateid_t cl_src_stateid; 507 stateid_t cl_dst_stateid; 508 u64 cl_src_pos; 509 u64 cl_dst_pos; 510 u64 cl_count; 511 }; 512 513 struct nfsd42_write_res { 514 u64 wr_bytes_written; 515 u32 wr_stable_how; 516 nfs4_verifier wr_verifier; 517 stateid_t cb_stateid; 518 }; 519 520 struct nfsd4_copy { 521 /* request */ 522 stateid_t cp_src_stateid; 523 stateid_t cp_dst_stateid; 524 u64 cp_src_pos; 525 u64 cp_dst_pos; 526 u64 cp_count; 527 struct nl4_server cp_src; 528 bool cp_intra; 529 530 /* both */ 531 bool cp_synchronous; 532 533 /* response */ 534 struct nfsd42_write_res cp_res; 535 536 /* for cb_offload */ 537 struct nfsd4_callback cp_cb; 538 __be32 nfserr; 539 struct knfsd_fh fh; 540 541 struct nfs4_client *cp_clp; 542 543 struct nfsd_file *nf_src; 544 struct nfsd_file *nf_dst; 545 546 copy_stateid_t cp_stateid; 547 548 struct list_head copies; 549 struct task_struct *copy_task; 550 refcount_t refcount; 551 bool stopped; 552 553 struct vfsmount *ss_mnt; 554 struct nfs_fh c_fh; 555 nfs4_stateid stateid; 556 }; 557 extern bool inter_copy_offload_enable; 558 559 struct nfsd4_seek { 560 /* request */ 561 stateid_t seek_stateid; 562 loff_t seek_offset; 563 u32 seek_whence; 564 565 /* response */ 566 u32 seek_eof; 567 loff_t seek_pos; 568 }; 569 570 struct nfsd4_offload_status { 571 /* request */ 572 stateid_t stateid; 573 574 /* response */ 575 u64 count; 576 u32 status; 577 }; 578 579 struct nfsd4_copy_notify { 580 /* request */ 581 stateid_t cpn_src_stateid; 582 struct nl4_server cpn_dst; 583 584 /* response */ 585 stateid_t cpn_cnr_stateid; 586 u64 cpn_sec; 587 u32 cpn_nsec; 588 struct nl4_server cpn_src; 589 }; 590 591 struct nfsd4_op { 592 int opnum; 593 const struct nfsd4_operation * opdesc; 594 __be32 status; 595 union nfsd4_op_u { 596 struct nfsd4_access access; 597 struct nfsd4_close close; 598 struct nfsd4_commit commit; 599 struct nfsd4_create create; 600 struct nfsd4_delegreturn delegreturn; 601 struct nfsd4_getattr getattr; 602 struct svc_fh * getfh; 603 struct nfsd4_link link; 604 struct nfsd4_lock lock; 605 struct nfsd4_lockt lockt; 606 struct nfsd4_locku locku; 607 struct nfsd4_lookup lookup; 608 struct nfsd4_verify nverify; 609 struct nfsd4_open open; 610 struct nfsd4_open_confirm open_confirm; 611 struct nfsd4_open_downgrade open_downgrade; 612 struct nfsd4_putfh putfh; 613 struct nfsd4_read read; 614 struct nfsd4_readdir readdir; 615 struct nfsd4_readlink readlink; 616 struct nfsd4_remove remove; 617 struct nfsd4_rename rename; 618 clientid_t renew; 619 struct nfsd4_secinfo secinfo; 620 struct nfsd4_setattr setattr; 621 struct nfsd4_setclientid setclientid; 622 struct nfsd4_setclientid_confirm setclientid_confirm; 623 struct nfsd4_verify verify; 624 struct nfsd4_write write; 625 struct nfsd4_release_lockowner release_lockowner; 626 627 /* NFSv4.1 */ 628 struct nfsd4_exchange_id exchange_id; 629 struct nfsd4_backchannel_ctl backchannel_ctl; 630 struct nfsd4_bind_conn_to_session bind_conn_to_session; 631 struct nfsd4_create_session create_session; 632 struct nfsd4_destroy_session destroy_session; 633 struct nfsd4_destroy_clientid destroy_clientid; 634 struct nfsd4_sequence sequence; 635 struct nfsd4_reclaim_complete reclaim_complete; 636 struct nfsd4_test_stateid test_stateid; 637 struct nfsd4_free_stateid free_stateid; 638 struct nfsd4_getdeviceinfo getdeviceinfo; 639 struct nfsd4_layoutget layoutget; 640 struct nfsd4_layoutcommit layoutcommit; 641 struct nfsd4_layoutreturn layoutreturn; 642 struct nfsd4_secinfo_no_name secinfo_no_name; 643 644 /* NFSv4.2 */ 645 struct nfsd4_fallocate allocate; 646 struct nfsd4_fallocate deallocate; 647 struct nfsd4_clone clone; 648 struct nfsd4_copy copy; 649 struct nfsd4_offload_status offload_status; 650 struct nfsd4_copy_notify copy_notify; 651 struct nfsd4_seek seek; 652 } u; 653 struct nfs4_replay * replay; 654 }; 655 656 bool nfsd4_cache_this_op(struct nfsd4_op *); 657 658 /* 659 * Memory needed just for the duration of processing one compound: 660 */ 661 struct svcxdr_tmpbuf { 662 struct svcxdr_tmpbuf *next; 663 char buf[]; 664 }; 665 666 struct nfsd4_compoundargs { 667 /* scratch variables for XDR decode */ 668 __be32 * p; 669 __be32 * end; 670 struct page ** pagelist; 671 int pagelen; 672 bool tail; 673 __be32 tmp[8]; 674 __be32 * tmpp; 675 struct svcxdr_tmpbuf *to_free; 676 677 struct svc_rqst *rqstp; 678 679 u32 taglen; 680 char * tag; 681 u32 minorversion; 682 u32 opcnt; 683 struct nfsd4_op *ops; 684 struct nfsd4_op iops[8]; 685 int cachetype; 686 }; 687 688 struct nfsd4_compoundres { 689 /* scratch variables for XDR encode */ 690 struct xdr_stream xdr; 691 struct svc_rqst * rqstp; 692 693 u32 taglen; 694 char * tag; 695 u32 opcnt; 696 __be32 * tagp; /* tag, opcount encode location */ 697 struct nfsd4_compound_state cstate; 698 }; 699 700 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp) 701 { 702 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; 703 return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE; 704 } 705 706 /* 707 * The session reply cache only needs to cache replies that the client 708 * actually asked us to. But it's almost free for us to cache compounds 709 * consisting of only a SEQUENCE op, so we may as well cache those too. 710 * Also, the protocol doesn't give us a convenient response in the case 711 * of a replay of a solo SEQUENCE op that wasn't cached 712 * (RETRY_UNCACHED_REP can only be returned in the second op of a 713 * compound). 714 */ 715 static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp) 716 { 717 return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS) 718 || nfsd4_is_solo_sequence(resp); 719 } 720 721 static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp) 722 { 723 struct nfsd4_compoundres *resp = rqstp->rq_resp; 724 struct nfsd4_compoundargs *argp = rqstp->rq_argp; 725 726 return argp->opcnt == resp->opcnt; 727 } 728 729 const struct nfsd4_operation *OPDESC(struct nfsd4_op *op); 730 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op); 731 void warn_on_nonidempotent_op(struct nfsd4_op *op); 732 733 #define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs) 734 735 static inline void 736 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp) 737 { 738 BUG_ON(!fhp->fh_pre_saved); 739 cinfo->atomic = (u32)fhp->fh_post_saved; 740 cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry)); 741 742 cinfo->before_change = fhp->fh_pre_change; 743 cinfo->after_change = fhp->fh_post_change; 744 cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec; 745 cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec; 746 cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec; 747 cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec; 748 749 } 750 751 752 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp); 753 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *); 754 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *); 755 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *); 756 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32); 757 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *); 758 void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op); 759 __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, 760 struct svc_fh *fhp, struct svc_export *exp, 761 struct dentry *dentry, 762 u32 *bmval, struct svc_rqst *, int ignore_crossmnt); 763 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp, 764 struct nfsd4_compound_state *, union nfsd4_op_u *u); 765 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp, 766 struct nfsd4_compound_state *, union nfsd4_op_u *u); 767 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp, 768 struct nfsd4_compound_state *, union nfsd4_op_u *u); 769 extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, 770 struct nfsd4_compound_state *, union nfsd4_op_u *u); 771 extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, 772 struct nfsd4_compound_state *, union nfsd4_op_u *u); 773 extern __be32 nfsd4_create_session(struct svc_rqst *, 774 struct nfsd4_compound_state *, union nfsd4_op_u *u); 775 extern __be32 nfsd4_sequence(struct svc_rqst *, 776 struct nfsd4_compound_state *, union nfsd4_op_u *u); 777 extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp); 778 extern __be32 nfsd4_destroy_session(struct svc_rqst *, 779 struct nfsd4_compound_state *, union nfsd4_op_u *u); 780 extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, 781 union nfsd4_op_u *u); 782 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, 783 union nfsd4_op_u *u); 784 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *, 785 struct nfsd4_open *open, struct nfsd_net *nn); 786 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp, 787 struct svc_fh *current_fh, struct nfsd4_open *open); 788 extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate); 789 extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate, 790 struct nfsd4_open *open); 791 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp, 792 struct nfsd4_compound_state *, union nfsd4_op_u *u); 793 extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 794 union nfsd4_op_u *u); 795 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp, 796 struct nfsd4_compound_state *, union nfsd4_op_u *u); 797 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 798 union nfsd4_op_u *u); 799 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 800 union nfsd4_op_u *u); 801 extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 802 union nfsd4_op_u *u); 803 extern __be32 804 nfsd4_release_lockowner(struct svc_rqst *rqstp, 805 struct nfsd4_compound_state *, union nfsd4_op_u *u); 806 extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp); 807 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp, 808 struct nfsd4_compound_state *, union nfsd4_op_u *u); 809 extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 810 union nfsd4_op_u *u); 811 extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp, 812 struct nfsd4_compound_state *, union nfsd4_op_u *); 813 extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp, 814 struct nfsd4_compound_state *, union nfsd4_op_u *); 815 extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr); 816 817 enum nfsd4_op_flags { 818 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ 819 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ 820 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ 821 /* For rfc 5661 section 2.6.3.1.1: */ 822 OP_HANDLES_WRONGSEC = 1 << 3, 823 OP_IS_PUTFH_LIKE = 1 << 4, 824 /* 825 * These are the ops whose result size we estimate before 826 * encoding, to avoid performing an op then not being able to 827 * respond or cache a response. This includes writes and setattrs 828 * as well as the operations usually called "nonidempotent": 829 */ 830 OP_MODIFIES_SOMETHING = 1 << 5, 831 /* 832 * Cache compounds containing these ops in the xid-based drc: 833 * We use the DRC for compounds containing non-idempotent 834 * operations, *except* those that are 4.1-specific (since 835 * sessions provide their own EOS), and except for stateful 836 * operations other than setclientid and setclientid_confirm 837 * (since sequence numbers provide EOS for open, lock, etc in 838 * the v4.0 case). 839 */ 840 OP_CACHEME = 1 << 6, 841 /* 842 * These are ops which clear current state id. 843 */ 844 OP_CLEAR_STATEID = 1 << 7, 845 /* Most ops return only an error on failure; some may do more: */ 846 OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8, 847 }; 848 849 struct nfsd4_operation { 850 __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *, 851 union nfsd4_op_u *); 852 void (*op_release)(union nfsd4_op_u *); 853 u32 op_flags; 854 char *op_name; 855 /* Try to get response size before operation */ 856 u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *); 857 void (*op_get_currentstateid)(struct nfsd4_compound_state *, 858 union nfsd4_op_u *); 859 void (*op_set_currentstateid)(struct nfsd4_compound_state *, 860 union nfsd4_op_u *); 861 }; 862 863 864 #endif 865 866 /* 867 * Local variables: 868 * c-basic-offset: 8 869 * End: 870 */ 871