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_getxattr { 228 char *getxa_name; /* request */ 229 u32 getxa_len; /* request */ 230 void *getxa_buf; 231 }; 232 233 struct nfsd4_setxattr { 234 u32 setxa_flags; /* request */ 235 char *setxa_name; /* request */ 236 char *setxa_buf; /* request */ 237 u32 setxa_len; /* request */ 238 struct nfsd4_change_info setxa_cinfo; /* response */ 239 }; 240 241 struct nfsd4_removexattr { 242 char *rmxa_name; /* request */ 243 struct nfsd4_change_info rmxa_cinfo; /* response */ 244 }; 245 246 struct nfsd4_listxattrs { 247 u64 lsxa_cookie; /* request */ 248 u32 lsxa_maxcount; /* request */ 249 char *lsxa_buf; /* unfiltered buffer (reply) */ 250 u32 lsxa_len; /* unfiltered len (reply) */ 251 }; 252 253 struct nfsd4_open { 254 u32 op_claim_type; /* request */ 255 struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */ 256 u32 op_delegate_type; /* request - CLAIM_PREV only */ 257 stateid_t op_delegate_stateid; /* request - response */ 258 u32 op_why_no_deleg; /* response - DELEG_NONE_EXT only */ 259 u32 op_create; /* request */ 260 u32 op_createmode; /* request */ 261 int op_umask; /* request */ 262 u32 op_bmval[3]; /* request */ 263 struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */ 264 nfs4_verifier op_verf __attribute__((aligned(32))); 265 /* EXCLUSIVE4 */ 266 clientid_t op_clientid; /* request */ 267 struct xdr_netobj op_owner; /* request */ 268 u32 op_seqid; /* request */ 269 u32 op_share_access; /* request */ 270 u32 op_share_deny; /* request */ 271 u32 op_deleg_want; /* request */ 272 stateid_t op_stateid; /* response */ 273 __be32 op_xdr_error; /* see nfsd4_open_omfg() */ 274 u32 op_recall; /* recall */ 275 struct nfsd4_change_info op_cinfo; /* response */ 276 u32 op_rflags; /* response */ 277 bool op_truncate; /* used during processing */ 278 bool op_created; /* used during processing */ 279 struct nfs4_openowner *op_openowner; /* used during processing */ 280 struct nfs4_file *op_file; /* used during processing */ 281 struct nfs4_ol_stateid *op_stp; /* used during processing */ 282 struct nfs4_clnt_odstate *op_odstate; /* used during processing */ 283 struct nfs4_acl *op_acl; 284 struct xdr_netobj op_label; 285 }; 286 287 struct nfsd4_open_confirm { 288 stateid_t oc_req_stateid /* request */; 289 u32 oc_seqid /* request */; 290 stateid_t oc_resp_stateid /* response */; 291 }; 292 293 struct nfsd4_open_downgrade { 294 stateid_t od_stateid; 295 u32 od_seqid; 296 u32 od_share_access; /* request */ 297 u32 od_deleg_want; /* request */ 298 u32 od_share_deny; /* request */ 299 }; 300 301 302 struct nfsd4_read { 303 stateid_t rd_stateid; /* request */ 304 u64 rd_offset; /* request */ 305 u32 rd_length; /* request */ 306 int rd_vlen; 307 struct nfsd_file *rd_nf; 308 309 struct svc_rqst *rd_rqstp; /* response */ 310 struct svc_fh *rd_fhp; /* response */ 311 }; 312 313 struct nfsd4_readdir { 314 u64 rd_cookie; /* request */ 315 nfs4_verifier rd_verf; /* request */ 316 u32 rd_dircount; /* request */ 317 u32 rd_maxcount; /* request */ 318 u32 rd_bmval[3]; /* request */ 319 struct svc_rqst *rd_rqstp; /* response */ 320 struct svc_fh * rd_fhp; /* response */ 321 322 struct readdir_cd common; 323 struct xdr_stream *xdr; 324 int cookie_offset; 325 }; 326 327 struct nfsd4_release_lockowner { 328 clientid_t rl_clientid; 329 struct xdr_netobj rl_owner; 330 }; 331 struct nfsd4_readlink { 332 struct svc_rqst *rl_rqstp; /* request */ 333 struct svc_fh * rl_fhp; /* request */ 334 }; 335 336 struct nfsd4_remove { 337 u32 rm_namelen; /* request */ 338 char * rm_name; /* request */ 339 struct nfsd4_change_info rm_cinfo; /* response */ 340 }; 341 342 struct nfsd4_rename { 343 u32 rn_snamelen; /* request */ 344 char * rn_sname; /* request */ 345 u32 rn_tnamelen; /* request */ 346 char * rn_tname; /* request */ 347 struct nfsd4_change_info rn_sinfo; /* response */ 348 struct nfsd4_change_info rn_tinfo; /* response */ 349 }; 350 351 struct nfsd4_secinfo { 352 u32 si_namelen; /* request */ 353 char *si_name; /* request */ 354 struct svc_export *si_exp; /* response */ 355 }; 356 357 struct nfsd4_secinfo_no_name { 358 u32 sin_style; /* request */ 359 struct svc_export *sin_exp; /* response */ 360 }; 361 362 struct nfsd4_setattr { 363 stateid_t sa_stateid; /* request */ 364 u32 sa_bmval[3]; /* request */ 365 struct iattr sa_iattr; /* request */ 366 struct nfs4_acl *sa_acl; 367 struct xdr_netobj sa_label; 368 }; 369 370 struct nfsd4_setclientid { 371 nfs4_verifier se_verf; /* request */ 372 struct xdr_netobj se_name; 373 u32 se_callback_prog; /* request */ 374 u32 se_callback_netid_len; /* request */ 375 char * se_callback_netid_val; /* request */ 376 u32 se_callback_addr_len; /* request */ 377 char * se_callback_addr_val; /* request */ 378 u32 se_callback_ident; /* request */ 379 clientid_t se_clientid; /* response */ 380 nfs4_verifier se_confirm; /* response */ 381 }; 382 383 struct nfsd4_setclientid_confirm { 384 clientid_t sc_clientid; 385 nfs4_verifier sc_confirm; 386 }; 387 388 struct nfsd4_saved_compoundargs { 389 __be32 *p; 390 __be32 *end; 391 int pagelen; 392 struct page **pagelist; 393 }; 394 395 struct nfsd4_test_stateid_id { 396 __be32 ts_id_status; 397 stateid_t ts_id_stateid; 398 struct list_head ts_id_list; 399 }; 400 401 struct nfsd4_test_stateid { 402 u32 ts_num_ids; 403 struct list_head ts_stateid_list; 404 }; 405 406 struct nfsd4_free_stateid { 407 stateid_t fr_stateid; /* request */ 408 }; 409 410 /* also used for NVERIFY */ 411 struct nfsd4_verify { 412 u32 ve_bmval[3]; /* request */ 413 u32 ve_attrlen; /* request */ 414 char * ve_attrval; /* request */ 415 }; 416 417 struct nfsd4_write { 418 stateid_t wr_stateid; /* request */ 419 u64 wr_offset; /* request */ 420 u32 wr_stable_how; /* request */ 421 u32 wr_buflen; /* request */ 422 struct xdr_buf wr_payload; /* request */ 423 424 u32 wr_bytes_written; /* response */ 425 u32 wr_how_written; /* response */ 426 nfs4_verifier wr_verifier; /* response */ 427 }; 428 429 struct nfsd4_exchange_id { 430 nfs4_verifier verifier; 431 struct xdr_netobj clname; 432 u32 flags; 433 clientid_t clientid; 434 u32 seqid; 435 int spa_how; 436 u32 spo_must_enforce[3]; 437 u32 spo_must_allow[3]; 438 struct xdr_netobj nii_domain; 439 struct xdr_netobj nii_name; 440 struct timespec64 nii_time; 441 }; 442 443 struct nfsd4_sequence { 444 struct nfs4_sessionid sessionid; /* request/response */ 445 u32 seqid; /* request/response */ 446 u32 slotid; /* request/response */ 447 u32 maxslots; /* request/response */ 448 u32 cachethis; /* request */ 449 #if 0 450 u32 target_maxslots; /* response */ 451 #endif /* not yet */ 452 u32 status_flags; /* response */ 453 }; 454 455 struct nfsd4_destroy_session { 456 struct nfs4_sessionid sessionid; 457 }; 458 459 struct nfsd4_destroy_clientid { 460 clientid_t clientid; 461 }; 462 463 struct nfsd4_reclaim_complete { 464 u32 rca_one_fs; 465 }; 466 467 struct nfsd4_deviceid { 468 u64 fsid_idx; 469 u32 generation; 470 u32 pad; 471 }; 472 473 struct nfsd4_layout_seg { 474 u32 iomode; 475 u64 offset; 476 u64 length; 477 }; 478 479 struct nfsd4_getdeviceinfo { 480 struct nfsd4_deviceid gd_devid; /* request */ 481 u32 gd_layout_type; /* request */ 482 u32 gd_maxcount; /* request */ 483 u32 gd_notify_types;/* request - response */ 484 void *gd_device; /* response */ 485 }; 486 487 struct nfsd4_layoutget { 488 u64 lg_minlength; /* request */ 489 u32 lg_signal; /* request */ 490 u32 lg_layout_type; /* request */ 491 u32 lg_maxcount; /* request */ 492 stateid_t lg_sid; /* request/response */ 493 struct nfsd4_layout_seg lg_seg; /* request/response */ 494 void *lg_content; /* response */ 495 }; 496 497 struct nfsd4_layoutcommit { 498 stateid_t lc_sid; /* request */ 499 struct nfsd4_layout_seg lc_seg; /* request */ 500 u32 lc_reclaim; /* request */ 501 u32 lc_newoffset; /* request */ 502 u64 lc_last_wr; /* request */ 503 struct timespec64 lc_mtime; /* request */ 504 u32 lc_layout_type; /* request */ 505 u32 lc_up_len; /* layout length */ 506 void *lc_up_layout; /* decoded by callback */ 507 u32 lc_size_chg; /* boolean for response */ 508 u64 lc_newsize; /* response */ 509 }; 510 511 struct nfsd4_layoutreturn { 512 u32 lr_return_type; /* request */ 513 u32 lr_layout_type; /* request */ 514 struct nfsd4_layout_seg lr_seg; /* request */ 515 u32 lr_reclaim; /* request */ 516 u32 lrf_body_len; /* request */ 517 void *lrf_body; /* request */ 518 stateid_t lr_sid; /* request/response */ 519 u32 lrs_present; /* response */ 520 }; 521 522 struct nfsd4_fallocate { 523 /* request */ 524 stateid_t falloc_stateid; 525 loff_t falloc_offset; 526 u64 falloc_length; 527 }; 528 529 struct nfsd4_clone { 530 /* request */ 531 stateid_t cl_src_stateid; 532 stateid_t cl_dst_stateid; 533 u64 cl_src_pos; 534 u64 cl_dst_pos; 535 u64 cl_count; 536 }; 537 538 struct nfsd42_write_res { 539 u64 wr_bytes_written; 540 u32 wr_stable_how; 541 nfs4_verifier wr_verifier; 542 stateid_t cb_stateid; 543 }; 544 545 struct nfsd4_copy { 546 /* request */ 547 stateid_t cp_src_stateid; 548 stateid_t cp_dst_stateid; 549 u64 cp_src_pos; 550 u64 cp_dst_pos; 551 u64 cp_count; 552 struct nl4_server cp_src; 553 bool cp_intra; 554 555 /* both */ 556 bool cp_synchronous; 557 558 /* response */ 559 struct nfsd42_write_res cp_res; 560 561 /* for cb_offload */ 562 struct nfsd4_callback cp_cb; 563 __be32 nfserr; 564 struct knfsd_fh fh; 565 566 struct nfs4_client *cp_clp; 567 568 struct nfsd_file *nf_src; 569 struct nfsd_file *nf_dst; 570 571 copy_stateid_t cp_stateid; 572 573 struct list_head copies; 574 struct task_struct *copy_task; 575 refcount_t refcount; 576 bool stopped; 577 578 struct vfsmount *ss_mnt; 579 struct nfs_fh c_fh; 580 nfs4_stateid stateid; 581 }; 582 extern bool inter_copy_offload_enable; 583 584 struct nfsd4_seek { 585 /* request */ 586 stateid_t seek_stateid; 587 loff_t seek_offset; 588 u32 seek_whence; 589 590 /* response */ 591 u32 seek_eof; 592 loff_t seek_pos; 593 }; 594 595 struct nfsd4_offload_status { 596 /* request */ 597 stateid_t stateid; 598 599 /* response */ 600 u64 count; 601 u32 status; 602 }; 603 604 struct nfsd4_copy_notify { 605 /* request */ 606 stateid_t cpn_src_stateid; 607 struct nl4_server cpn_dst; 608 609 /* response */ 610 stateid_t cpn_cnr_stateid; 611 u64 cpn_sec; 612 u32 cpn_nsec; 613 struct nl4_server cpn_src; 614 }; 615 616 struct nfsd4_op { 617 int opnum; 618 const struct nfsd4_operation * opdesc; 619 __be32 status; 620 union nfsd4_op_u { 621 struct nfsd4_access access; 622 struct nfsd4_close close; 623 struct nfsd4_commit commit; 624 struct nfsd4_create create; 625 struct nfsd4_delegreturn delegreturn; 626 struct nfsd4_getattr getattr; 627 struct svc_fh * getfh; 628 struct nfsd4_link link; 629 struct nfsd4_lock lock; 630 struct nfsd4_lockt lockt; 631 struct nfsd4_locku locku; 632 struct nfsd4_lookup lookup; 633 struct nfsd4_verify nverify; 634 struct nfsd4_open open; 635 struct nfsd4_open_confirm open_confirm; 636 struct nfsd4_open_downgrade open_downgrade; 637 struct nfsd4_putfh putfh; 638 struct nfsd4_read read; 639 struct nfsd4_readdir readdir; 640 struct nfsd4_readlink readlink; 641 struct nfsd4_remove remove; 642 struct nfsd4_rename rename; 643 clientid_t renew; 644 struct nfsd4_secinfo secinfo; 645 struct nfsd4_setattr setattr; 646 struct nfsd4_setclientid setclientid; 647 struct nfsd4_setclientid_confirm setclientid_confirm; 648 struct nfsd4_verify verify; 649 struct nfsd4_write write; 650 struct nfsd4_release_lockowner release_lockowner; 651 652 /* NFSv4.1 */ 653 struct nfsd4_exchange_id exchange_id; 654 struct nfsd4_backchannel_ctl backchannel_ctl; 655 struct nfsd4_bind_conn_to_session bind_conn_to_session; 656 struct nfsd4_create_session create_session; 657 struct nfsd4_destroy_session destroy_session; 658 struct nfsd4_destroy_clientid destroy_clientid; 659 struct nfsd4_sequence sequence; 660 struct nfsd4_reclaim_complete reclaim_complete; 661 struct nfsd4_test_stateid test_stateid; 662 struct nfsd4_free_stateid free_stateid; 663 struct nfsd4_getdeviceinfo getdeviceinfo; 664 struct nfsd4_layoutget layoutget; 665 struct nfsd4_layoutcommit layoutcommit; 666 struct nfsd4_layoutreturn layoutreturn; 667 struct nfsd4_secinfo_no_name secinfo_no_name; 668 669 /* NFSv4.2 */ 670 struct nfsd4_fallocate allocate; 671 struct nfsd4_fallocate deallocate; 672 struct nfsd4_clone clone; 673 struct nfsd4_copy copy; 674 struct nfsd4_offload_status offload_status; 675 struct nfsd4_copy_notify copy_notify; 676 struct nfsd4_seek seek; 677 678 struct nfsd4_getxattr getxattr; 679 struct nfsd4_setxattr setxattr; 680 struct nfsd4_listxattrs listxattrs; 681 struct nfsd4_removexattr removexattr; 682 } u; 683 struct nfs4_replay * replay; 684 }; 685 686 bool nfsd4_cache_this_op(struct nfsd4_op *); 687 688 /* 689 * Memory needed just for the duration of processing one compound: 690 */ 691 struct svcxdr_tmpbuf { 692 struct svcxdr_tmpbuf *next; 693 char buf[]; 694 }; 695 696 struct nfsd4_compoundargs { 697 /* scratch variables for XDR decode */ 698 __be32 tmp[8]; 699 __be32 * tmpp; 700 struct xdr_stream *xdr; 701 struct svcxdr_tmpbuf *to_free; 702 struct svc_rqst *rqstp; 703 704 u32 taglen; 705 char * tag; 706 u32 minorversion; 707 u32 opcnt; 708 struct nfsd4_op *ops; 709 struct nfsd4_op iops[8]; 710 int cachetype; 711 }; 712 713 struct nfsd4_compoundres { 714 /* scratch variables for XDR encode */ 715 struct xdr_stream xdr; 716 struct svc_rqst * rqstp; 717 718 u32 taglen; 719 char * tag; 720 u32 opcnt; 721 __be32 * tagp; /* tag, opcount encode location */ 722 struct nfsd4_compound_state cstate; 723 }; 724 725 static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp) 726 { 727 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; 728 return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE; 729 } 730 731 /* 732 * The session reply cache only needs to cache replies that the client 733 * actually asked us to. But it's almost free for us to cache compounds 734 * consisting of only a SEQUENCE op, so we may as well cache those too. 735 * Also, the protocol doesn't give us a convenient response in the case 736 * of a replay of a solo SEQUENCE op that wasn't cached 737 * (RETRY_UNCACHED_REP can only be returned in the second op of a 738 * compound). 739 */ 740 static inline bool nfsd4_cache_this(struct nfsd4_compoundres *resp) 741 { 742 return (resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS) 743 || nfsd4_is_solo_sequence(resp); 744 } 745 746 static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp) 747 { 748 struct nfsd4_compoundres *resp = rqstp->rq_resp; 749 struct nfsd4_compoundargs *argp = rqstp->rq_argp; 750 751 return argp->opcnt == resp->opcnt; 752 } 753 754 const struct nfsd4_operation *OPDESC(struct nfsd4_op *op); 755 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op); 756 void warn_on_nonidempotent_op(struct nfsd4_op *op); 757 758 #define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs) 759 760 static inline void 761 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp) 762 { 763 BUG_ON(!fhp->fh_pre_saved); 764 cinfo->atomic = (u32)fhp->fh_post_saved; 765 cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry)); 766 767 cinfo->before_change = fhp->fh_pre_change; 768 cinfo->after_change = fhp->fh_post_change; 769 cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec; 770 cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec; 771 cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec; 772 cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec; 773 774 } 775 776 777 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp); 778 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *); 779 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *); 780 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32); 781 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *); 782 void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op); 783 __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, 784 struct svc_fh *fhp, struct svc_export *exp, 785 struct dentry *dentry, 786 u32 *bmval, struct svc_rqst *, int ignore_crossmnt); 787 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp, 788 struct nfsd4_compound_state *, union nfsd4_op_u *u); 789 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp, 790 struct nfsd4_compound_state *, union nfsd4_op_u *u); 791 extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp, 792 struct nfsd4_compound_state *, union nfsd4_op_u *u); 793 extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, 794 struct nfsd4_compound_state *, union nfsd4_op_u *u); 795 extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, 796 struct nfsd4_compound_state *, union nfsd4_op_u *u); 797 extern __be32 nfsd4_create_session(struct svc_rqst *, 798 struct nfsd4_compound_state *, union nfsd4_op_u *u); 799 extern __be32 nfsd4_sequence(struct svc_rqst *, 800 struct nfsd4_compound_state *, union nfsd4_op_u *u); 801 extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp); 802 extern __be32 nfsd4_destroy_session(struct svc_rqst *, 803 struct nfsd4_compound_state *, union nfsd4_op_u *u); 804 extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, 805 union nfsd4_op_u *u); 806 __be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, 807 union nfsd4_op_u *u); 808 extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *, 809 struct nfsd4_open *open, struct nfsd_net *nn); 810 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp, 811 struct svc_fh *current_fh, struct nfsd4_open *open); 812 extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate); 813 extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate, 814 struct nfsd4_open *open); 815 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp, 816 struct nfsd4_compound_state *, union nfsd4_op_u *u); 817 extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 818 union nfsd4_op_u *u); 819 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp, 820 struct nfsd4_compound_state *, union nfsd4_op_u *u); 821 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 822 union nfsd4_op_u *u); 823 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 824 union nfsd4_op_u *u); 825 extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 826 union nfsd4_op_u *u); 827 extern __be32 828 nfsd4_release_lockowner(struct svc_rqst *rqstp, 829 struct nfsd4_compound_state *, union nfsd4_op_u *u); 830 extern void nfsd4_release_compoundargs(struct svc_rqst *rqstp); 831 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp, 832 struct nfsd4_compound_state *, union nfsd4_op_u *u); 833 extern __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *, 834 union nfsd4_op_u *u); 835 extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp, 836 struct nfsd4_compound_state *, union nfsd4_op_u *); 837 extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp, 838 struct nfsd4_compound_state *, union nfsd4_op_u *); 839 extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr); 840 841 enum nfsd4_op_flags { 842 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ 843 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ 844 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ 845 /* For rfc 5661 section 2.6.3.1.1: */ 846 OP_HANDLES_WRONGSEC = 1 << 3, 847 OP_IS_PUTFH_LIKE = 1 << 4, 848 /* 849 * These are the ops whose result size we estimate before 850 * encoding, to avoid performing an op then not being able to 851 * respond or cache a response. This includes writes and setattrs 852 * as well as the operations usually called "nonidempotent": 853 */ 854 OP_MODIFIES_SOMETHING = 1 << 5, 855 /* 856 * Cache compounds containing these ops in the xid-based drc: 857 * We use the DRC for compounds containing non-idempotent 858 * operations, *except* those that are 4.1-specific (since 859 * sessions provide their own EOS), and except for stateful 860 * operations other than setclientid and setclientid_confirm 861 * (since sequence numbers provide EOS for open, lock, etc in 862 * the v4.0 case). 863 */ 864 OP_CACHEME = 1 << 6, 865 /* 866 * These are ops which clear current state id. 867 */ 868 OP_CLEAR_STATEID = 1 << 7, 869 /* Most ops return only an error on failure; some may do more: */ 870 OP_NONTRIVIAL_ERROR_ENCODE = 1 << 8, 871 }; 872 873 struct nfsd4_operation { 874 __be32 (*op_func)(struct svc_rqst *, struct nfsd4_compound_state *, 875 union nfsd4_op_u *); 876 void (*op_release)(union nfsd4_op_u *); 877 u32 op_flags; 878 char *op_name; 879 /* Try to get response size before operation */ 880 u32 (*op_rsize_bop)(struct svc_rqst *, struct nfsd4_op *); 881 void (*op_get_currentstateid)(struct nfsd4_compound_state *, 882 union nfsd4_op_u *); 883 void (*op_set_currentstateid)(struct nfsd4_compound_state *, 884 union nfsd4_op_u *); 885 }; 886 887 888 #endif 889 890 /* 891 * Local variables: 892 * c-basic-offset: 8 893 * End: 894 */ 895