1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_NFS_XDR_H 3 #define _LINUX_NFS_XDR_H 4 5 #include <linux/nfsacl.h> 6 #include <linux/sunrpc/gss_api.h> 7 8 /* 9 * To change the maximum rsize and wsize supported by the NFS client, adjust 10 * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can 11 * support a megabyte or more. The default is left at 4096 bytes, which is 12 * reasonable for NFS over UDP. 13 */ 14 #define NFS_MAX_FILE_IO_SIZE (1048576U) 15 #define NFS_DEF_FILE_IO_SIZE (4096U) 16 #define NFS_MIN_FILE_IO_SIZE (1024U) 17 18 #define NFS_BITMASK_SZ 3 19 20 struct nfs4_string { 21 unsigned int len; 22 char *data; 23 }; 24 25 struct nfs_fsid { 26 uint64_t major; 27 uint64_t minor; 28 }; 29 30 /* 31 * Helper for checking equality between 2 fsids. 32 */ 33 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b) 34 { 35 return a->major == b->major && a->minor == b->minor; 36 } 37 38 struct nfs4_threshold { 39 __u32 bm; 40 __u32 l_type; 41 __u64 rd_sz; 42 __u64 wr_sz; 43 __u64 rd_io_sz; 44 __u64 wr_io_sz; 45 }; 46 47 struct nfs_fattr { 48 __u64 valid; /* which fields are valid */ 49 umode_t mode; 50 __u32 nlink; 51 kuid_t uid; 52 kgid_t gid; 53 dev_t rdev; 54 __u64 size; 55 union { 56 struct { 57 __u32 blocksize; 58 __u32 blocks; 59 } nfs2; 60 struct { 61 __u64 used; 62 } nfs3; 63 } du; 64 struct nfs_fsid fsid; 65 __u64 fileid; 66 __u64 mounted_on_fileid; 67 struct timespec64 atime; 68 struct timespec64 mtime; 69 struct timespec64 ctime; 70 struct timespec64 btime; 71 __u64 change_attr; /* NFSv4 change attribute */ 72 __u64 pre_change_attr;/* pre-op NFSv4 change attribute */ 73 __u64 pre_size; /* pre_op_attr.size */ 74 struct timespec64 pre_mtime; /* pre_op_attr.mtime */ 75 struct timespec64 pre_ctime; /* pre_op_attr.ctime */ 76 unsigned long time_start; 77 unsigned long gencount; 78 struct nfs4_string *owner_name; 79 struct nfs4_string *group_name; 80 struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */ 81 struct nfs4_label *label; 82 }; 83 84 #define NFS_ATTR_FATTR_TYPE BIT_ULL(0) 85 #define NFS_ATTR_FATTR_MODE BIT_ULL(1) 86 #define NFS_ATTR_FATTR_NLINK BIT_ULL(2) 87 #define NFS_ATTR_FATTR_OWNER BIT_ULL(3) 88 #define NFS_ATTR_FATTR_GROUP BIT_ULL(4) 89 #define NFS_ATTR_FATTR_RDEV BIT_ULL(5) 90 #define NFS_ATTR_FATTR_SIZE BIT_ULL(6) 91 #define NFS_ATTR_FATTR_PRESIZE BIT_ULL(7) 92 #define NFS_ATTR_FATTR_BLOCKS_USED BIT_ULL(8) 93 #define NFS_ATTR_FATTR_SPACE_USED BIT_ULL(9) 94 #define NFS_ATTR_FATTR_FSID BIT_ULL(10) 95 #define NFS_ATTR_FATTR_FILEID BIT_ULL(11) 96 #define NFS_ATTR_FATTR_ATIME BIT_ULL(12) 97 #define NFS_ATTR_FATTR_MTIME BIT_ULL(13) 98 #define NFS_ATTR_FATTR_CTIME BIT_ULL(14) 99 #define NFS_ATTR_FATTR_PREMTIME BIT_ULL(15) 100 #define NFS_ATTR_FATTR_PRECTIME BIT_ULL(16) 101 #define NFS_ATTR_FATTR_CHANGE BIT_ULL(17) 102 #define NFS_ATTR_FATTR_PRECHANGE BIT_ULL(18) 103 #define NFS_ATTR_FATTR_V4_LOCATIONS BIT_ULL(19) 104 #define NFS_ATTR_FATTR_V4_REFERRAL BIT_ULL(20) 105 #define NFS_ATTR_FATTR_MOUNTPOINT BIT_ULL(21) 106 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID BIT_ULL(22) 107 #define NFS_ATTR_FATTR_OWNER_NAME BIT_ULL(23) 108 #define NFS_ATTR_FATTR_GROUP_NAME BIT_ULL(24) 109 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL BIT_ULL(25) 110 #define NFS_ATTR_FATTR_BTIME BIT_ULL(26) 111 112 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \ 113 | NFS_ATTR_FATTR_MODE \ 114 | NFS_ATTR_FATTR_NLINK \ 115 | NFS_ATTR_FATTR_OWNER \ 116 | NFS_ATTR_FATTR_GROUP \ 117 | NFS_ATTR_FATTR_RDEV \ 118 | NFS_ATTR_FATTR_SIZE \ 119 | NFS_ATTR_FATTR_FSID \ 120 | NFS_ATTR_FATTR_FILEID \ 121 | NFS_ATTR_FATTR_ATIME \ 122 | NFS_ATTR_FATTR_MTIME \ 123 | NFS_ATTR_FATTR_CTIME \ 124 | NFS_ATTR_FATTR_CHANGE) 125 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \ 126 | NFS_ATTR_FATTR_BLOCKS_USED) 127 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \ 128 | NFS_ATTR_FATTR_SPACE_USED) 129 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \ 130 | NFS_ATTR_FATTR_SPACE_USED \ 131 | NFS_ATTR_FATTR_BTIME \ 132 | NFS_ATTR_FATTR_V4_SECURITY_LABEL) 133 134 /* 135 * Maximal number of supported layout drivers. 136 */ 137 #define NFS_MAX_LAYOUT_TYPES 8 138 139 /* 140 * Info on the file system 141 */ 142 struct nfs_fsinfo { 143 struct nfs_fattr *fattr; /* Post-op attributes */ 144 __u32 rtmax; /* max. read transfer size */ 145 __u32 rtpref; /* pref. read transfer size */ 146 __u32 rtmult; /* reads should be multiple of this */ 147 __u32 wtmax; /* max. write transfer size */ 148 __u32 wtpref; /* pref. write transfer size */ 149 __u32 wtmult; /* writes should be multiple of this */ 150 __u32 dtpref; /* pref. readdir transfer size */ 151 __u64 maxfilesize; 152 struct timespec64 time_delta; /* server time granularity */ 153 __u32 lease_time; /* in seconds */ 154 __u32 nlayouttypes; /* number of layouttypes */ 155 __u32 layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */ 156 __u32 blksize; /* preferred pnfs io block size */ 157 __u32 clone_blksize; /* granularity of a CLONE operation */ 158 enum nfs4_change_attr_type 159 change_attr_type; /* Info about change attr */ 160 __u32 xattr_support; /* User xattrs supported */ 161 }; 162 163 struct nfs_fsstat { 164 struct nfs_fattr *fattr; /* Post-op attributes */ 165 __u64 tbytes; /* total size in bytes */ 166 __u64 fbytes; /* # of free bytes */ 167 __u64 abytes; /* # of bytes available to user */ 168 __u64 tfiles; /* # of files */ 169 __u64 ffiles; /* # of free files */ 170 __u64 afiles; /* # of files available to user */ 171 }; 172 173 struct nfs2_fsstat { 174 __u32 tsize; /* Server transfer size */ 175 __u32 bsize; /* Filesystem block size */ 176 __u32 blocks; /* No. of "bsize" blocks on filesystem */ 177 __u32 bfree; /* No. of free "bsize" blocks */ 178 __u32 bavail; /* No. of available "bsize" blocks */ 179 }; 180 181 struct nfs_pathconf { 182 struct nfs_fattr *fattr; /* Post-op attributes */ 183 __u32 max_link; /* max # of hard links */ 184 __u32 max_namelen; /* max name length */ 185 bool case_insensitive; 186 bool case_preserving; 187 }; 188 189 struct nfs4_change_info { 190 u32 atomic; 191 u64 before; 192 u64 after; 193 }; 194 195 struct nfs_seqid; 196 197 /* nfs41 sessions channel attributes */ 198 struct nfs4_channel_attrs { 199 u32 max_rqst_sz; 200 u32 max_resp_sz; 201 u32 max_resp_sz_cached; 202 u32 max_ops; 203 u32 max_reqs; 204 }; 205 206 struct nfs4_slot; 207 struct nfs4_sequence_args { 208 struct nfs4_slot *sa_slot; 209 u8 sa_cache_this : 1, 210 sa_privileged : 1; 211 }; 212 213 struct nfs4_sequence_res { 214 const struct nfs4_sequence_slot_ops *sr_slot_ops; 215 struct nfs4_slot *sr_slot; /* slot used to send request */ 216 unsigned long sr_timestamp; 217 int sr_status; /* sequence operation status */ 218 u32 sr_status_flags; 219 u32 sr_highest_slotid; 220 u32 sr_target_highest_slotid; 221 }; 222 223 struct nfs4_get_lease_time_args { 224 struct nfs4_sequence_args la_seq_args; 225 }; 226 227 struct nfs4_get_lease_time_res { 228 struct nfs4_sequence_res lr_seq_res; 229 struct nfs_fsinfo *lr_fsinfo; 230 }; 231 232 struct xdr_stream; 233 struct nfs4_xdr_opaque_data; 234 235 struct nfs4_xdr_opaque_ops { 236 void (*encode)(struct xdr_stream *, const void *args, 237 const struct nfs4_xdr_opaque_data *); 238 void (*free)(struct nfs4_xdr_opaque_data *); 239 }; 240 241 struct nfs4_xdr_opaque_data { 242 const struct nfs4_xdr_opaque_ops *ops; 243 void *data; 244 }; 245 246 #define PNFS_LAYOUT_MAXSIZE 4096 247 248 struct nfs4_layoutdriver_data { 249 struct page **pages; 250 __u32 pglen; 251 __u32 len; 252 }; 253 254 struct pnfs_layout_range { 255 u32 iomode; 256 u64 offset; 257 u64 length; 258 }; 259 260 struct nfs4_layoutget_args { 261 struct nfs4_sequence_args seq_args; 262 __u32 type; 263 struct pnfs_layout_range range; 264 __u64 minlength; 265 __u32 maxcount; 266 struct inode *inode; 267 struct nfs_open_context *ctx; 268 nfs4_stateid stateid; 269 struct nfs4_layoutdriver_data layout; 270 }; 271 272 struct nfs4_layoutget_res { 273 struct nfs4_sequence_res seq_res; 274 int status; 275 __u32 return_on_close; 276 struct pnfs_layout_range range; 277 __u32 type; 278 nfs4_stateid stateid; 279 struct nfs4_layoutdriver_data *layoutp; 280 }; 281 282 struct nfs4_layoutget { 283 struct nfs4_layoutget_args args; 284 struct nfs4_layoutget_res res; 285 const struct cred *cred; 286 struct pnfs_layout_hdr *lo; 287 gfp_t gfp_flags; 288 }; 289 290 struct nfs4_getdeviceinfo_args { 291 struct nfs4_sequence_args seq_args; 292 struct pnfs_device *pdev; 293 __u32 notify_types; 294 }; 295 296 struct nfs4_getdeviceinfo_res { 297 struct nfs4_sequence_res seq_res; 298 struct pnfs_device *pdev; 299 __u32 notification; 300 }; 301 302 struct nfs4_layoutcommit_args { 303 struct nfs4_sequence_args seq_args; 304 nfs4_stateid stateid; 305 __u64 lastbytewritten; 306 struct inode *inode; 307 const u32 *bitmask; 308 size_t layoutupdate_len; 309 struct page *layoutupdate_page; 310 struct page **layoutupdate_pages; 311 __be32 *start_p; 312 }; 313 314 struct nfs4_layoutcommit_res { 315 struct nfs4_sequence_res seq_res; 316 struct nfs_fattr *fattr; 317 const struct nfs_server *server; 318 int status; 319 }; 320 321 struct nfs4_layoutcommit_data { 322 struct rpc_task task; 323 struct nfs_fattr fattr; 324 struct list_head lseg_list; 325 const struct cred *cred; 326 struct inode *inode; 327 struct nfs4_layoutcommit_args args; 328 struct nfs4_layoutcommit_res res; 329 }; 330 331 struct nfs4_layoutreturn_args { 332 struct nfs4_sequence_args seq_args; 333 struct pnfs_layout_hdr *layout; 334 struct inode *inode; 335 struct pnfs_layout_range range; 336 nfs4_stateid stateid; 337 __u32 layout_type; 338 struct nfs4_xdr_opaque_data *ld_private; 339 }; 340 341 struct nfs4_layoutreturn_res { 342 struct nfs4_sequence_res seq_res; 343 u32 lrs_present; 344 nfs4_stateid stateid; 345 }; 346 347 struct nfs4_layoutreturn { 348 struct nfs4_layoutreturn_args args; 349 struct nfs4_layoutreturn_res res; 350 const struct cred *cred; 351 struct nfs_client *clp; 352 struct inode *inode; 353 int rpc_status; 354 struct nfs4_xdr_opaque_data ld_private; 355 }; 356 357 #define PNFS_LAYOUTSTATS_MAXSIZE 256 358 359 struct nfs42_layoutstat_args; 360 struct nfs42_layoutstat_devinfo; 361 typedef void (*layoutstats_encode_t)(struct xdr_stream *, 362 struct nfs42_layoutstat_args *, 363 struct nfs42_layoutstat_devinfo *); 364 365 /* Per file per deviceid layoutstats */ 366 struct nfs42_layoutstat_devinfo { 367 struct nfs4_deviceid dev_id; 368 __u64 offset; 369 __u64 length; 370 __u64 read_count; 371 __u64 read_bytes; 372 __u64 write_count; 373 __u64 write_bytes; 374 __u32 layout_type; 375 struct nfs4_xdr_opaque_data ld_private; 376 }; 377 378 struct nfs42_layoutstat_args { 379 struct nfs4_sequence_args seq_args; 380 struct nfs_fh *fh; 381 struct inode *inode; 382 nfs4_stateid stateid; 383 int num_dev; 384 struct nfs42_layoutstat_devinfo *devinfo; 385 }; 386 387 struct nfs42_layoutstat_res { 388 struct nfs4_sequence_res seq_res; 389 int num_dev; 390 int rpc_status; 391 }; 392 393 struct nfs42_layoutstat_data { 394 struct inode *inode; 395 struct nfs42_layoutstat_args args; 396 struct nfs42_layoutstat_res res; 397 }; 398 399 struct nfs42_device_error { 400 struct nfs4_deviceid dev_id; 401 int status; 402 enum nfs_opnum4 opnum; 403 }; 404 405 struct nfs42_layout_error { 406 __u64 offset; 407 __u64 length; 408 nfs4_stateid stateid; 409 struct nfs42_device_error errors[1]; 410 }; 411 412 #define NFS42_LAYOUTERROR_MAX 5 413 414 struct nfs42_layouterror_args { 415 struct nfs4_sequence_args seq_args; 416 struct inode *inode; 417 unsigned int num_errors; 418 struct nfs42_layout_error errors[NFS42_LAYOUTERROR_MAX]; 419 }; 420 421 struct nfs42_layouterror_res { 422 struct nfs4_sequence_res seq_res; 423 unsigned int num_errors; 424 int rpc_status; 425 }; 426 427 struct nfs42_layouterror_data { 428 struct nfs42_layouterror_args args; 429 struct nfs42_layouterror_res res; 430 struct inode *inode; 431 struct pnfs_layout_segment *lseg; 432 }; 433 434 struct nfs42_clone_args { 435 struct nfs4_sequence_args seq_args; 436 struct nfs_fh *src_fh; 437 struct nfs_fh *dst_fh; 438 nfs4_stateid src_stateid; 439 nfs4_stateid dst_stateid; 440 __u64 src_offset; 441 __u64 dst_offset; 442 __u64 count; 443 const u32 *dst_bitmask; 444 }; 445 446 struct nfs42_clone_res { 447 struct nfs4_sequence_res seq_res; 448 unsigned int rpc_status; 449 struct nfs_fattr *dst_fattr; 450 const struct nfs_server *server; 451 }; 452 453 struct stateowner_id { 454 __u64 create_time; 455 __u64 uniquifier; 456 }; 457 458 struct nfs4_open_delegation { 459 __u32 open_delegation_type; 460 union { 461 struct { 462 fmode_t type; 463 __u32 do_recall; 464 nfs4_stateid stateid; 465 unsigned long pagemod_limit; 466 }; 467 struct { 468 __u32 why_no_delegation; 469 __u32 will_notify; 470 }; 471 }; 472 }; 473 474 /* 475 * Arguments to the open call. 476 */ 477 struct nfs_openargs { 478 struct nfs4_sequence_args seq_args; 479 const struct nfs_fh * fh; 480 struct nfs_seqid * seqid; 481 int open_flags; 482 fmode_t fmode; 483 u32 share_access; 484 u32 access; 485 __u64 clientid; 486 struct stateowner_id id; 487 union { 488 struct { 489 struct iattr * attrs; /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */ 490 nfs4_verifier verifier; /* EXCLUSIVE */ 491 }; 492 nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */ 493 __u32 delegation_type; /* CLAIM_PREVIOUS */ 494 } u; 495 const struct qstr * name; 496 const struct nfs_server *server; /* Needed for ID mapping */ 497 const u32 * bitmask; 498 const u32 * open_bitmap; 499 enum open_claim_type4 claim; 500 enum createmode4 createmode; 501 const struct nfs4_label *label; 502 umode_t umask; 503 struct nfs4_layoutget_args *lg_args; 504 }; 505 506 struct nfs_openres { 507 struct nfs4_sequence_res seq_res; 508 nfs4_stateid stateid; 509 struct nfs_fh fh; 510 struct nfs4_change_info cinfo; 511 __u32 rflags; 512 struct nfs_fattr * f_attr; 513 struct nfs_seqid * seqid; 514 const struct nfs_server *server; 515 __u32 attrset[NFS4_BITMAP_SIZE]; 516 struct nfs4_string *owner; 517 struct nfs4_string *group_owner; 518 struct nfs4_open_delegation delegation; 519 __u32 access_request; 520 __u32 access_supported; 521 __u32 access_result; 522 struct nfs4_layoutget_res *lg_res; 523 }; 524 525 /* 526 * Arguments to the open_confirm call. 527 */ 528 struct nfs_open_confirmargs { 529 struct nfs4_sequence_args seq_args; 530 const struct nfs_fh * fh; 531 nfs4_stateid * stateid; 532 struct nfs_seqid * seqid; 533 }; 534 535 struct nfs_open_confirmres { 536 struct nfs4_sequence_res seq_res; 537 nfs4_stateid stateid; 538 struct nfs_seqid * seqid; 539 }; 540 541 /* 542 * Arguments to the close call. 543 */ 544 struct nfs_closeargs { 545 struct nfs4_sequence_args seq_args; 546 struct nfs_fh * fh; 547 nfs4_stateid stateid; 548 struct nfs_seqid * seqid; 549 fmode_t fmode; 550 u32 share_access; 551 const u32 * bitmask; 552 u32 bitmask_store[NFS_BITMASK_SZ]; 553 struct nfs4_layoutreturn_args *lr_args; 554 }; 555 556 struct nfs_closeres { 557 struct nfs4_sequence_res seq_res; 558 nfs4_stateid stateid; 559 struct nfs_fattr * fattr; 560 struct nfs_seqid * seqid; 561 const struct nfs_server *server; 562 struct nfs4_layoutreturn_res *lr_res; 563 int lr_ret; 564 }; 565 /* 566 * * Arguments to the lock,lockt, and locku call. 567 * */ 568 struct nfs_lowner { 569 __u64 clientid; 570 __u64 id; 571 dev_t s_dev; 572 }; 573 574 struct nfs_lock_args { 575 struct nfs4_sequence_args seq_args; 576 struct nfs_fh * fh; 577 struct file_lock * fl; 578 struct nfs_seqid * lock_seqid; 579 nfs4_stateid lock_stateid; 580 struct nfs_seqid * open_seqid; 581 nfs4_stateid open_stateid; 582 struct nfs_lowner lock_owner; 583 unsigned char block : 1; 584 unsigned char reclaim : 1; 585 unsigned char new_lock_owner : 1; 586 }; 587 588 struct nfs_lock_res { 589 struct nfs4_sequence_res seq_res; 590 nfs4_stateid stateid; 591 struct nfs_seqid * lock_seqid; 592 struct nfs_seqid * open_seqid; 593 }; 594 595 struct nfs_locku_args { 596 struct nfs4_sequence_args seq_args; 597 struct nfs_fh * fh; 598 struct file_lock * fl; 599 struct nfs_seqid * seqid; 600 nfs4_stateid stateid; 601 }; 602 603 struct nfs_locku_res { 604 struct nfs4_sequence_res seq_res; 605 nfs4_stateid stateid; 606 struct nfs_seqid * seqid; 607 }; 608 609 struct nfs_lockt_args { 610 struct nfs4_sequence_args seq_args; 611 struct nfs_fh * fh; 612 struct file_lock * fl; 613 struct nfs_lowner lock_owner; 614 }; 615 616 struct nfs_lockt_res { 617 struct nfs4_sequence_res seq_res; 618 struct file_lock * denied; /* LOCK, LOCKT failed */ 619 }; 620 621 struct nfs_release_lockowner_args { 622 struct nfs4_sequence_args seq_args; 623 struct nfs_lowner lock_owner; 624 }; 625 626 struct nfs_release_lockowner_res { 627 struct nfs4_sequence_res seq_res; 628 }; 629 630 struct nfs4_delegattr { 631 struct timespec64 atime; 632 struct timespec64 mtime; 633 bool atime_set; 634 bool mtime_set; 635 }; 636 637 struct nfs4_delegreturnargs { 638 struct nfs4_sequence_args seq_args; 639 const struct nfs_fh *fhandle; 640 const nfs4_stateid *stateid; 641 const u32 *bitmask; 642 u32 bitmask_store[NFS_BITMASK_SZ]; 643 struct nfs4_layoutreturn_args *lr_args; 644 struct nfs4_delegattr *sattr_args; 645 }; 646 647 struct nfs4_delegreturnres { 648 struct nfs4_sequence_res seq_res; 649 struct nfs_fattr * fattr; 650 struct nfs_server *server; 651 struct nfs4_layoutreturn_res *lr_res; 652 int lr_ret; 653 bool sattr_res; 654 int sattr_ret; 655 }; 656 657 /* 658 * Arguments to the write call. 659 */ 660 struct nfs_write_verifier { 661 char data[8]; 662 }; 663 664 struct nfs_writeverf { 665 struct nfs_write_verifier verifier; 666 enum nfs3_stable_how committed; 667 }; 668 669 /* 670 * Arguments shared by the read and write call. 671 */ 672 struct nfs_pgio_args { 673 struct nfs4_sequence_args seq_args; 674 struct nfs_fh * fh; 675 struct nfs_open_context *context; 676 struct nfs_lock_context *lock_context; 677 nfs4_stateid stateid; 678 __u64 offset; 679 __u32 count; 680 unsigned int pgbase; 681 struct page ** pages; 682 union { 683 unsigned int replen; /* used by read */ 684 struct { 685 const u32 * bitmask; /* used by write */ 686 u32 bitmask_store[NFS_BITMASK_SZ]; /* used by write */ 687 enum nfs3_stable_how stable; /* used by write */ 688 }; 689 }; 690 }; 691 692 struct nfs_pgio_res { 693 struct nfs4_sequence_res seq_res; 694 struct nfs_fattr * fattr; 695 __u64 count; 696 __u32 op_status; 697 union { 698 struct { 699 unsigned int replen; /* used by read */ 700 int eof; /* used by read */ 701 void * scratch; /* used by read */ 702 }; 703 struct { 704 struct nfs_writeverf * verf; /* used by write */ 705 const struct nfs_server *server; /* used by write */ 706 }; 707 }; 708 }; 709 710 /* 711 * Arguments to the commit call. 712 */ 713 struct nfs_commitargs { 714 struct nfs4_sequence_args seq_args; 715 struct nfs_fh *fh; 716 __u64 offset; 717 __u32 count; 718 const u32 *bitmask; 719 }; 720 721 struct nfs_commitres { 722 struct nfs4_sequence_res seq_res; 723 __u32 op_status; 724 struct nfs_fattr *fattr; 725 struct nfs_writeverf *verf; 726 const struct nfs_server *server; 727 }; 728 729 /* 730 * Common arguments to the unlink call 731 */ 732 struct nfs_removeargs { 733 struct nfs4_sequence_args seq_args; 734 const struct nfs_fh *fh; 735 struct qstr name; 736 }; 737 738 struct nfs_removeres { 739 struct nfs4_sequence_res seq_res; 740 struct nfs_server *server; 741 struct nfs_fattr *dir_attr; 742 struct nfs4_change_info cinfo; 743 }; 744 745 /* 746 * Common arguments to the rename call 747 */ 748 struct nfs_renameargs { 749 struct nfs4_sequence_args seq_args; 750 const struct nfs_fh *old_dir; 751 const struct nfs_fh *new_dir; 752 const struct qstr *old_name; 753 const struct qstr *new_name; 754 }; 755 756 struct nfs_renameres { 757 struct nfs4_sequence_res seq_res; 758 struct nfs_server *server; 759 struct nfs4_change_info old_cinfo; 760 struct nfs_fattr *old_fattr; 761 struct nfs4_change_info new_cinfo; 762 struct nfs_fattr *new_fattr; 763 }; 764 765 /* parsed sec= options */ 766 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */ 767 struct nfs_auth_info { 768 unsigned int flavor_len; 769 rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS]; 770 }; 771 772 /* 773 * Argument struct for decode_entry function 774 */ 775 struct nfs_entry { 776 __u64 ino; 777 __u64 cookie; 778 const char * name; 779 unsigned int len; 780 int eof; 781 struct nfs_fh * fh; 782 struct nfs_fattr * fattr; 783 unsigned char d_type; 784 struct nfs_server * server; 785 }; 786 787 struct nfs_readdir_arg { 788 struct dentry *dentry; 789 const struct cred *cred; 790 __be32 *verf; 791 u64 cookie; 792 struct page **pages; 793 unsigned int page_len; 794 bool plus; 795 }; 796 797 struct nfs_readdir_res { 798 __be32 *verf; 799 }; 800 801 /* 802 * The following types are for NFSv2 only. 803 */ 804 struct nfs_sattrargs { 805 struct nfs_fh * fh; 806 struct iattr * sattr; 807 }; 808 809 struct nfs_diropargs { 810 struct nfs_fh * fh; 811 const char * name; 812 unsigned int len; 813 }; 814 815 struct nfs_createargs { 816 struct nfs_fh * fh; 817 const char * name; 818 unsigned int len; 819 struct iattr * sattr; 820 }; 821 822 struct nfs_setattrargs { 823 struct nfs4_sequence_args seq_args; 824 struct nfs_fh * fh; 825 nfs4_stateid stateid; 826 struct iattr * iap; 827 const struct nfs_server * server; /* Needed for name mapping */ 828 const u32 * bitmask; 829 const struct nfs4_label *label; 830 }; 831 832 enum nfs4_acl_type { 833 NFS4ACL_NONE = 0, 834 NFS4ACL_ACL, 835 NFS4ACL_DACL, 836 NFS4ACL_SACL, 837 }; 838 839 struct nfs_setaclargs { 840 struct nfs4_sequence_args seq_args; 841 struct nfs_fh * fh; 842 enum nfs4_acl_type acl_type; 843 size_t acl_len; 844 struct page ** acl_pages; 845 }; 846 847 struct nfs_setaclres { 848 struct nfs4_sequence_res seq_res; 849 }; 850 851 struct nfs_getaclargs { 852 struct nfs4_sequence_args seq_args; 853 struct nfs_fh * fh; 854 enum nfs4_acl_type acl_type; 855 size_t acl_len; 856 struct page ** acl_pages; 857 }; 858 859 /* getxattr ACL interface flags */ 860 #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */ 861 struct nfs_getaclres { 862 struct nfs4_sequence_res seq_res; 863 enum nfs4_acl_type acl_type; 864 size_t acl_len; 865 size_t acl_data_offset; 866 int acl_flags; 867 struct folio * acl_scratch; 868 }; 869 870 struct nfs_setattrres { 871 struct nfs4_sequence_res seq_res; 872 struct nfs_fattr * fattr; 873 const struct nfs_server * server; 874 }; 875 876 struct nfs_linkargs { 877 struct nfs_fh * fromfh; 878 struct nfs_fh * tofh; 879 const char * toname; 880 unsigned int tolen; 881 }; 882 883 struct nfs_symlinkargs { 884 struct nfs_fh * fromfh; 885 const char * fromname; 886 unsigned int fromlen; 887 struct page ** pages; 888 unsigned int pathlen; 889 struct iattr * sattr; 890 }; 891 892 struct nfs_readdirargs { 893 struct nfs_fh * fh; 894 __u32 cookie; 895 unsigned int count; 896 struct page ** pages; 897 }; 898 899 struct nfs3_getaclargs { 900 struct nfs_fh * fh; 901 int mask; 902 struct page ** pages; 903 }; 904 905 struct nfs3_setaclargs { 906 struct inode * inode; 907 int mask; 908 struct posix_acl * acl_access; 909 struct posix_acl * acl_default; 910 size_t len; 911 unsigned int npages; 912 struct page ** pages; 913 }; 914 915 struct nfs_diropok { 916 struct nfs_fh * fh; 917 struct nfs_fattr * fattr; 918 }; 919 920 struct nfs_readlinkargs { 921 struct nfs_fh * fh; 922 unsigned int pgbase; 923 unsigned int pglen; 924 struct page ** pages; 925 }; 926 927 struct nfs3_sattrargs { 928 struct nfs_fh * fh; 929 struct iattr * sattr; 930 unsigned int guard; 931 struct timespec64 guardtime; 932 }; 933 934 struct nfs3_diropargs { 935 struct nfs_fh * fh; 936 const char * name; 937 unsigned int len; 938 }; 939 940 struct nfs3_accessargs { 941 struct nfs_fh * fh; 942 __u32 access; 943 }; 944 945 struct nfs3_createargs { 946 struct nfs_fh * fh; 947 const char * name; 948 unsigned int len; 949 struct iattr * sattr; 950 enum nfs3_createmode createmode; 951 __be32 verifier[2]; 952 }; 953 954 struct nfs3_mkdirargs { 955 struct nfs_fh * fh; 956 const char * name; 957 unsigned int len; 958 struct iattr * sattr; 959 }; 960 961 struct nfs3_symlinkargs { 962 struct nfs_fh * fromfh; 963 const char * fromname; 964 unsigned int fromlen; 965 struct page ** pages; 966 unsigned int pathlen; 967 struct iattr * sattr; 968 }; 969 970 struct nfs3_mknodargs { 971 struct nfs_fh * fh; 972 const char * name; 973 unsigned int len; 974 enum nfs3_ftype type; 975 struct iattr * sattr; 976 dev_t rdev; 977 }; 978 979 struct nfs3_linkargs { 980 struct nfs_fh * fromfh; 981 struct nfs_fh * tofh; 982 const char * toname; 983 unsigned int tolen; 984 }; 985 986 struct nfs3_readdirargs { 987 struct nfs_fh * fh; 988 __u64 cookie; 989 __be32 verf[2]; 990 bool plus; 991 unsigned int count; 992 struct page ** pages; 993 }; 994 995 struct nfs3_diropres { 996 struct nfs_fattr * dir_attr; 997 struct nfs_fh * fh; 998 struct nfs_fattr * fattr; 999 }; 1000 1001 struct nfs3_accessres { 1002 struct nfs_fattr * fattr; 1003 __u32 access; 1004 }; 1005 1006 struct nfs3_readlinkargs { 1007 struct nfs_fh * fh; 1008 unsigned int pgbase; 1009 unsigned int pglen; 1010 struct page ** pages; 1011 }; 1012 1013 struct nfs3_linkres { 1014 struct nfs_fattr * dir_attr; 1015 struct nfs_fattr * fattr; 1016 }; 1017 1018 struct nfs3_readdirres { 1019 struct nfs_fattr * dir_attr; 1020 __be32 * verf; 1021 bool plus; 1022 }; 1023 1024 struct nfs3_getaclres { 1025 struct nfs_fattr * fattr; 1026 int mask; 1027 unsigned int acl_access_count; 1028 unsigned int acl_default_count; 1029 struct posix_acl * acl_access; 1030 struct posix_acl * acl_default; 1031 }; 1032 1033 #if IS_ENABLED(CONFIG_NFS_V4) 1034 1035 typedef u64 clientid4; 1036 1037 struct nfs4_accessargs { 1038 struct nfs4_sequence_args seq_args; 1039 const struct nfs_fh * fh; 1040 const u32 * bitmask; 1041 u32 access; 1042 }; 1043 1044 struct nfs4_accessres { 1045 struct nfs4_sequence_res seq_res; 1046 const struct nfs_server * server; 1047 struct nfs_fattr * fattr; 1048 u32 supported; 1049 u32 access; 1050 }; 1051 1052 struct nfs4_create_arg { 1053 struct nfs4_sequence_args seq_args; 1054 u32 ftype; 1055 union { 1056 struct { 1057 struct page ** pages; 1058 unsigned int len; 1059 } symlink; /* NF4LNK */ 1060 struct { 1061 u32 specdata1; 1062 u32 specdata2; 1063 } device; /* NF4BLK, NF4CHR */ 1064 } u; 1065 const struct qstr * name; 1066 const struct nfs_server * server; 1067 const struct iattr * attrs; 1068 const struct nfs_fh * dir_fh; 1069 const u32 * bitmask; 1070 const struct nfs4_label *label; 1071 umode_t umask; 1072 }; 1073 1074 struct nfs4_create_res { 1075 struct nfs4_sequence_res seq_res; 1076 const struct nfs_server * server; 1077 struct nfs_fh * fh; 1078 struct nfs_fattr * fattr; 1079 struct nfs4_change_info dir_cinfo; 1080 }; 1081 1082 struct nfs4_fsinfo_arg { 1083 struct nfs4_sequence_args seq_args; 1084 const struct nfs_fh * fh; 1085 const u32 * bitmask; 1086 }; 1087 1088 struct nfs4_fsinfo_res { 1089 struct nfs4_sequence_res seq_res; 1090 struct nfs_fsinfo *fsinfo; 1091 }; 1092 1093 struct nfs4_getattr_arg { 1094 struct nfs4_sequence_args seq_args; 1095 const struct nfs_fh * fh; 1096 const u32 * bitmask; 1097 bool get_dir_deleg; 1098 }; 1099 1100 struct nfs4_gdd_res { 1101 u32 status; 1102 nfs4_stateid deleg; 1103 }; 1104 1105 struct nfs4_getattr_res { 1106 struct nfs4_sequence_res seq_res; 1107 const struct nfs_server * server; 1108 struct nfs_fattr * fattr; 1109 struct nfs4_gdd_res * gdd_res; 1110 }; 1111 1112 struct nfs4_link_arg { 1113 struct nfs4_sequence_args seq_args; 1114 const struct nfs_fh * fh; 1115 const struct nfs_fh * dir_fh; 1116 const struct qstr * name; 1117 const u32 * bitmask; 1118 }; 1119 1120 struct nfs4_link_res { 1121 struct nfs4_sequence_res seq_res; 1122 const struct nfs_server * server; 1123 struct nfs_fattr * fattr; 1124 struct nfs4_change_info cinfo; 1125 struct nfs_fattr * dir_attr; 1126 }; 1127 1128 struct nfs4_lookup_arg { 1129 struct nfs4_sequence_args seq_args; 1130 const struct nfs_fh * dir_fh; 1131 const struct qstr * name; 1132 const u32 * bitmask; 1133 }; 1134 1135 struct nfs4_lookup_res { 1136 struct nfs4_sequence_res seq_res; 1137 const struct nfs_server * server; 1138 struct nfs_fattr * fattr; 1139 struct nfs_fh * fh; 1140 }; 1141 1142 struct nfs4_lookupp_arg { 1143 struct nfs4_sequence_args seq_args; 1144 const struct nfs_fh *fh; 1145 const u32 *bitmask; 1146 }; 1147 1148 struct nfs4_lookupp_res { 1149 struct nfs4_sequence_res seq_res; 1150 const struct nfs_server *server; 1151 struct nfs_fattr *fattr; 1152 struct nfs_fh *fh; 1153 }; 1154 1155 struct nfs4_lookup_root_arg { 1156 struct nfs4_sequence_args seq_args; 1157 const u32 * bitmask; 1158 }; 1159 1160 struct nfs4_pathconf_arg { 1161 struct nfs4_sequence_args seq_args; 1162 const struct nfs_fh * fh; 1163 const u32 * bitmask; 1164 }; 1165 1166 struct nfs4_pathconf_res { 1167 struct nfs4_sequence_res seq_res; 1168 struct nfs_pathconf *pathconf; 1169 }; 1170 1171 struct nfs4_readdir_arg { 1172 struct nfs4_sequence_args seq_args; 1173 const struct nfs_fh * fh; 1174 u64 cookie; 1175 nfs4_verifier verifier; 1176 u32 count; 1177 struct page ** pages; /* zero-copy data */ 1178 unsigned int pgbase; /* zero-copy data */ 1179 const u32 * bitmask; 1180 bool plus; 1181 }; 1182 1183 struct nfs4_readdir_res { 1184 struct nfs4_sequence_res seq_res; 1185 nfs4_verifier verifier; 1186 unsigned int pgbase; 1187 }; 1188 1189 struct nfs4_readlink { 1190 struct nfs4_sequence_args seq_args; 1191 const struct nfs_fh * fh; 1192 unsigned int pgbase; 1193 unsigned int pglen; /* zero-copy data */ 1194 struct page ** pages; /* zero-copy data */ 1195 }; 1196 1197 struct nfs4_readlink_res { 1198 struct nfs4_sequence_res seq_res; 1199 }; 1200 1201 struct nfs4_setclientid { 1202 const nfs4_verifier * sc_verifier; 1203 u32 sc_prog; 1204 unsigned int sc_netid_len; 1205 char sc_netid[RPCBIND_MAXNETIDLEN + 1]; 1206 unsigned int sc_uaddr_len; 1207 char sc_uaddr[RPCBIND_MAXUADDRLEN + 1]; 1208 struct nfs_client *sc_clnt; 1209 struct rpc_cred *sc_cred; 1210 }; 1211 1212 struct nfs4_setclientid_res { 1213 u64 clientid; 1214 nfs4_verifier confirm; 1215 }; 1216 1217 struct nfs4_statfs_arg { 1218 struct nfs4_sequence_args seq_args; 1219 const struct nfs_fh * fh; 1220 const u32 * bitmask; 1221 }; 1222 1223 struct nfs4_statfs_res { 1224 struct nfs4_sequence_res seq_res; 1225 struct nfs_fsstat *fsstat; 1226 }; 1227 1228 struct nfs4_open_caps { 1229 u32 oa_share_access[1]; 1230 u32 oa_share_deny[1]; 1231 u32 oa_share_access_want[1]; 1232 u32 oa_open_claim[1]; 1233 u32 oa_createmode[1]; 1234 }; 1235 1236 struct nfs4_server_caps_arg { 1237 struct nfs4_sequence_args seq_args; 1238 struct nfs_fh *fhandle; 1239 const u32 * bitmask; 1240 }; 1241 1242 struct nfs4_server_caps_res { 1243 struct nfs4_sequence_res seq_res; 1244 u32 attr_bitmask[3]; 1245 u32 exclcreat_bitmask[3]; 1246 u32 acl_bitmask; 1247 u32 has_links; 1248 u32 has_symlinks; 1249 u32 fh_expire_type; 1250 u32 case_insensitive; 1251 u32 case_preserving; 1252 struct nfs4_open_caps open_caps; 1253 }; 1254 1255 #define NFS4_PATHNAME_MAXCOMPONENTS 512 1256 struct nfs4_pathname { 1257 unsigned int ncomponents; 1258 struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS]; 1259 }; 1260 1261 #define NFS4_FS_LOCATION_MAXSERVERS 10 1262 struct nfs4_fs_location { 1263 unsigned int nservers; 1264 struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS]; 1265 struct nfs4_pathname rootpath; 1266 }; 1267 1268 #define NFS4_FS_LOCATIONS_MAXENTRIES 10 1269 struct nfs4_fs_locations { 1270 struct nfs_fattr *fattr; 1271 const struct nfs_server *server; 1272 struct nfs4_pathname fs_path; 1273 int nlocations; 1274 struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES]; 1275 }; 1276 1277 struct nfs4_fs_locations_arg { 1278 struct nfs4_sequence_args seq_args; 1279 const struct nfs_fh *dir_fh; 1280 const struct nfs_fh *fh; 1281 const struct qstr *name; 1282 struct page *page; 1283 const u32 *bitmask; 1284 clientid4 clientid; 1285 unsigned char migration:1, renew:1; 1286 }; 1287 1288 struct nfs4_fs_locations_res { 1289 struct nfs4_sequence_res seq_res; 1290 struct nfs4_fs_locations *fs_locations; 1291 unsigned char migration:1, renew:1; 1292 }; 1293 1294 struct nfs4_secinfo4 { 1295 u32 flavor; 1296 struct rpcsec_gss_info flavor_info; 1297 }; 1298 1299 struct nfs4_secinfo_flavors { 1300 unsigned int num_flavors; 1301 struct nfs4_secinfo4 flavors[]; 1302 }; 1303 1304 struct nfs4_secinfo_arg { 1305 struct nfs4_sequence_args seq_args; 1306 const struct nfs_fh *dir_fh; 1307 const struct qstr *name; 1308 }; 1309 1310 struct nfs4_secinfo_res { 1311 struct nfs4_sequence_res seq_res; 1312 struct nfs4_secinfo_flavors *flavors; 1313 }; 1314 1315 struct nfs4_fsid_present_arg { 1316 struct nfs4_sequence_args seq_args; 1317 const struct nfs_fh *fh; 1318 clientid4 clientid; 1319 unsigned char renew:1; 1320 }; 1321 1322 struct nfs4_fsid_present_res { 1323 struct nfs4_sequence_res seq_res; 1324 struct nfs_fh *fh; 1325 unsigned char renew:1; 1326 }; 1327 1328 struct pnfs_commit_bucket { 1329 struct list_head written; 1330 struct list_head committing; 1331 struct pnfs_layout_segment *lseg; 1332 struct nfs_writeverf direct_verf; 1333 }; 1334 1335 struct pnfs_commit_array { 1336 struct list_head cinfo_list; 1337 struct list_head lseg_list; 1338 struct pnfs_layout_segment *lseg; 1339 struct rcu_head rcu; 1340 refcount_t refcount; 1341 unsigned int nbuckets; 1342 struct pnfs_commit_bucket buckets[] __counted_by(nbuckets); 1343 }; 1344 1345 struct pnfs_ds_commit_info { 1346 struct list_head commits; 1347 unsigned int nwritten; 1348 unsigned int ncommitting; 1349 const struct pnfs_commit_ops *ops; 1350 }; 1351 1352 struct nfs41_state_protection { 1353 u32 how; 1354 struct nfs4_op_map enforce; 1355 struct nfs4_op_map allow; 1356 }; 1357 1358 struct nfs41_exchange_id_args { 1359 struct nfs_client *client; 1360 nfs4_verifier verifier; 1361 u32 flags; 1362 struct nfs41_state_protection state_protect; 1363 }; 1364 1365 struct nfs41_server_owner { 1366 uint64_t minor_id; 1367 uint32_t major_id_sz; 1368 char major_id[NFS4_OPAQUE_LIMIT]; 1369 }; 1370 1371 struct nfs41_server_scope { 1372 uint32_t server_scope_sz; 1373 char server_scope[NFS4_OPAQUE_LIMIT]; 1374 }; 1375 1376 struct nfs41_impl_id { 1377 char domain[NFS4_OPAQUE_LIMIT + 1]; 1378 char name[NFS4_OPAQUE_LIMIT + 1]; 1379 struct nfstime4 date; 1380 }; 1381 1382 #define MAX_BIND_CONN_TO_SESSION_RETRIES 3 1383 struct nfs41_bind_conn_to_session_args { 1384 struct nfs_client *client; 1385 struct nfs4_sessionid sessionid; 1386 u32 dir; 1387 bool use_conn_in_rdma_mode; 1388 int retries; 1389 }; 1390 1391 struct nfs41_bind_conn_to_session_res { 1392 struct nfs4_sessionid sessionid; 1393 u32 dir; 1394 bool use_conn_in_rdma_mode; 1395 }; 1396 1397 struct nfs41_exchange_id_res { 1398 u64 clientid; 1399 u32 seqid; 1400 u32 flags; 1401 struct nfs41_server_owner *server_owner; 1402 struct nfs41_server_scope *server_scope; 1403 struct nfs41_impl_id *impl_id; 1404 struct nfs41_state_protection state_protect; 1405 }; 1406 1407 struct nfs41_create_session_args { 1408 struct nfs_client *client; 1409 u64 clientid; 1410 uint32_t seqid; 1411 uint32_t flags; 1412 uint32_t cb_program; 1413 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */ 1414 struct nfs4_channel_attrs bc_attrs; /* Back Channel */ 1415 }; 1416 1417 struct nfs41_create_session_res { 1418 struct nfs4_sessionid sessionid; 1419 uint32_t seqid; 1420 uint32_t flags; 1421 struct nfs4_channel_attrs fc_attrs; /* Fore Channel */ 1422 struct nfs4_channel_attrs bc_attrs; /* Back Channel */ 1423 }; 1424 1425 struct nfs41_reclaim_complete_args { 1426 struct nfs4_sequence_args seq_args; 1427 /* In the future extend to include curr_fh for use with migration */ 1428 unsigned char one_fs:1; 1429 }; 1430 1431 struct nfs41_reclaim_complete_res { 1432 struct nfs4_sequence_res seq_res; 1433 }; 1434 1435 #define SECINFO_STYLE_CURRENT_FH 0 1436 #define SECINFO_STYLE_PARENT 1 1437 struct nfs41_secinfo_no_name_args { 1438 struct nfs4_sequence_args seq_args; 1439 int style; 1440 }; 1441 1442 struct nfs41_test_stateid_args { 1443 struct nfs4_sequence_args seq_args; 1444 nfs4_stateid stateid; 1445 }; 1446 1447 struct nfs41_test_stateid_res { 1448 struct nfs4_sequence_res seq_res; 1449 unsigned int status; 1450 }; 1451 1452 struct nfs41_free_stateid_args { 1453 struct nfs4_sequence_args seq_args; 1454 nfs4_stateid stateid; 1455 }; 1456 1457 struct nfs41_free_stateid_res { 1458 struct nfs4_sequence_res seq_res; 1459 unsigned int status; 1460 }; 1461 1462 #else 1463 1464 struct pnfs_ds_commit_info { 1465 }; 1466 1467 #endif /* CONFIG_NFS_V4 */ 1468 1469 #ifdef CONFIG_NFS_V4_2 1470 struct nfs42_falloc_args { 1471 struct nfs4_sequence_args seq_args; 1472 1473 struct nfs_fh *falloc_fh; 1474 nfs4_stateid falloc_stateid; 1475 u64 falloc_offset; 1476 u64 falloc_length; 1477 const u32 *falloc_bitmask; 1478 }; 1479 1480 struct nfs42_falloc_res { 1481 struct nfs4_sequence_res seq_res; 1482 unsigned int status; 1483 1484 struct nfs_fattr *falloc_fattr; 1485 const struct nfs_server *falloc_server; 1486 }; 1487 1488 struct nfs42_copy_args { 1489 struct nfs4_sequence_args seq_args; 1490 1491 struct nfs_fh *src_fh; 1492 nfs4_stateid src_stateid; 1493 u64 src_pos; 1494 1495 struct nfs_fh *dst_fh; 1496 nfs4_stateid dst_stateid; 1497 u64 dst_pos; 1498 1499 u64 count; 1500 bool sync; 1501 struct nl4_server *cp_src; 1502 }; 1503 1504 struct nfs42_write_res { 1505 nfs4_stateid stateid; 1506 u64 count; 1507 struct nfs_writeverf verifier; 1508 }; 1509 1510 struct nfs42_copy_res { 1511 struct nfs4_sequence_res seq_res; 1512 struct nfs42_write_res write_res; 1513 bool consecutive; 1514 bool synchronous; 1515 struct nfs_commitres commit_res; 1516 }; 1517 1518 struct nfs42_offload_status_args { 1519 struct nfs4_sequence_args osa_seq_args; 1520 struct nfs_fh *osa_src_fh; 1521 nfs4_stateid osa_stateid; 1522 }; 1523 1524 struct nfs42_offload_status_res { 1525 struct nfs4_sequence_res osr_seq_res; 1526 u64 osr_count; 1527 int complete_count; 1528 u32 osr_complete; 1529 }; 1530 1531 struct nfs42_copy_notify_args { 1532 struct nfs4_sequence_args cna_seq_args; 1533 1534 struct nfs_fh *cna_src_fh; 1535 nfs4_stateid cna_src_stateid; 1536 struct nl4_server cna_dst; 1537 }; 1538 1539 struct nfs42_copy_notify_res { 1540 struct nfs4_sequence_res cnr_seq_res; 1541 1542 struct nfstime4 cnr_lease_time; 1543 nfs4_stateid cnr_stateid; 1544 struct nl4_server cnr_src; 1545 }; 1546 1547 struct nfs42_seek_args { 1548 struct nfs4_sequence_args seq_args; 1549 1550 struct nfs_fh *sa_fh; 1551 nfs4_stateid sa_stateid; 1552 u64 sa_offset; 1553 u32 sa_what; 1554 }; 1555 1556 struct nfs42_seek_res { 1557 struct nfs4_sequence_res seq_res; 1558 unsigned int status; 1559 1560 u32 sr_eof; 1561 u64 sr_offset; 1562 }; 1563 1564 struct nfs42_setxattrargs { 1565 struct nfs4_sequence_args seq_args; 1566 struct nfs_fh *fh; 1567 const u32 *bitmask; 1568 const char *xattr_name; 1569 u32 xattr_flags; 1570 size_t xattr_len; 1571 struct page **xattr_pages; 1572 }; 1573 1574 struct nfs42_setxattrres { 1575 struct nfs4_sequence_res seq_res; 1576 struct nfs4_change_info cinfo; 1577 struct nfs_fattr *fattr; 1578 const struct nfs_server *server; 1579 }; 1580 1581 struct nfs42_getxattrargs { 1582 struct nfs4_sequence_args seq_args; 1583 struct nfs_fh *fh; 1584 const char *xattr_name; 1585 size_t xattr_len; 1586 struct page **xattr_pages; 1587 }; 1588 1589 struct nfs42_getxattrres { 1590 struct nfs4_sequence_res seq_res; 1591 size_t xattr_len; 1592 }; 1593 1594 struct nfs42_listxattrsargs { 1595 struct nfs4_sequence_args seq_args; 1596 struct nfs_fh *fh; 1597 u32 count; 1598 u64 cookie; 1599 struct page **xattr_pages; 1600 }; 1601 1602 struct nfs42_listxattrsres { 1603 struct nfs4_sequence_res seq_res; 1604 struct folio *scratch; 1605 void *xattr_buf; 1606 size_t xattr_len; 1607 u64 cookie; 1608 bool eof; 1609 size_t copied; 1610 }; 1611 1612 struct nfs42_removexattrargs { 1613 struct nfs4_sequence_args seq_args; 1614 struct nfs_fh *fh; 1615 const u32 *bitmask; 1616 const char *xattr_name; 1617 }; 1618 1619 struct nfs42_removexattrres { 1620 struct nfs4_sequence_res seq_res; 1621 struct nfs4_change_info cinfo; 1622 struct nfs_fattr *fattr; 1623 const struct nfs_server *server; 1624 }; 1625 1626 #endif /* CONFIG_NFS_V4_2 */ 1627 1628 struct nfs_page; 1629 1630 #define NFS_PAGEVEC_SIZE (8U) 1631 1632 struct nfs_page_array { 1633 struct page **pagevec; 1634 unsigned int npages; /* Max length of pagevec */ 1635 struct page *page_array[NFS_PAGEVEC_SIZE]; 1636 }; 1637 1638 /* used as flag bits in nfs_pgio_header */ 1639 enum { 1640 NFS_IOHDR_ERROR = 0, 1641 NFS_IOHDR_EOF, 1642 NFS_IOHDR_REDO, 1643 NFS_IOHDR_STAT, 1644 NFS_IOHDR_RESEND_PNFS, 1645 NFS_IOHDR_RESEND_MDS, 1646 NFS_IOHDR_UNSTABLE_WRITES, 1647 NFS_IOHDR_ODIRECT, 1648 }; 1649 1650 struct nfs_io_completion; 1651 struct nfs_pgio_header { 1652 struct inode *inode; 1653 const struct cred *cred; 1654 struct list_head pages; 1655 struct nfs_page *req; 1656 struct nfs_writeverf verf; /* Used for writes */ 1657 fmode_t rw_mode; 1658 struct pnfs_layout_segment *lseg; 1659 loff_t io_start; 1660 const struct rpc_call_ops *mds_ops; 1661 void (*release) (struct nfs_pgio_header *hdr); 1662 const struct nfs_pgio_completion_ops *completion_ops; 1663 const struct nfs_rw_ops *rw_ops; 1664 struct nfs_io_completion *io_completion; 1665 struct nfs_direct_req *dreq; 1666 #ifdef CONFIG_NFS_FSCACHE 1667 void *netfs; 1668 #endif 1669 1670 unsigned short retrans; 1671 int pnfs_error; 1672 int error; /* merge with pnfs_error */ 1673 unsigned int good_bytes; /* boundary of good data */ 1674 unsigned long flags; 1675 1676 /* 1677 * rpc data 1678 */ 1679 struct rpc_task task; 1680 struct nfs_fattr fattr; 1681 struct nfs_pgio_args args; /* argument struct */ 1682 struct nfs_pgio_res res; /* result struct */ 1683 unsigned long timestamp; /* For lease renewal */ 1684 int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *); 1685 __u64 mds_offset; /* Filelayout dense stripe */ 1686 struct nfs_page_array page_array; 1687 struct nfs_client *ds_clp; /* pNFS data server */ 1688 u32 ds_commit_idx; /* ds index if ds_clp is set */ 1689 u32 pgio_mirror_idx;/* mirror index in pgio layer */ 1690 }; 1691 1692 struct nfs_mds_commit_info { 1693 atomic_t rpcs_out; 1694 atomic_long_t ncommit; 1695 struct list_head list; 1696 }; 1697 1698 struct nfs_commit_info; 1699 struct nfs_commit_data; 1700 struct nfs_inode; 1701 struct nfs_commit_completion_ops { 1702 void (*completion) (struct nfs_commit_data *data); 1703 void (*resched_write) (struct nfs_commit_info *, struct nfs_page *); 1704 }; 1705 1706 struct nfs_commit_info { 1707 struct inode *inode; /* Needed for inode->i_lock */ 1708 struct nfs_mds_commit_info *mds; 1709 struct pnfs_ds_commit_info *ds; 1710 struct nfs_direct_req *dreq; /* O_DIRECT request */ 1711 const struct nfs_commit_completion_ops *completion_ops; 1712 }; 1713 1714 struct nfs_commit_data { 1715 struct rpc_task task; 1716 struct inode *inode; 1717 const struct cred *cred; 1718 struct nfs_fattr fattr; 1719 struct nfs_writeverf verf; 1720 struct list_head pages; /* Coalesced requests we wish to flush */ 1721 struct list_head list; /* lists of struct nfs_write_data */ 1722 struct nfs_direct_req *dreq; /* O_DIRECT request */ 1723 struct nfs_commitargs args; /* argument struct */ 1724 struct nfs_commitres res; /* result struct */ 1725 struct nfs_open_context *context; 1726 struct pnfs_layout_segment *lseg; 1727 struct nfs_client *ds_clp; /* pNFS data server */ 1728 int ds_commit_index; 1729 loff_t lwb; 1730 const struct rpc_call_ops *mds_ops; 1731 const struct nfs_commit_completion_ops *completion_ops; 1732 int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data); 1733 unsigned long flags; 1734 }; 1735 1736 struct nfs_pgio_completion_ops { 1737 void (*error_cleanup)(struct list_head *head, int); 1738 void (*init_hdr)(struct nfs_pgio_header *hdr); 1739 void (*completion)(struct nfs_pgio_header *hdr); 1740 void (*reschedule_io)(struct nfs_pgio_header *hdr); 1741 }; 1742 1743 struct nfs_unlinkdata { 1744 struct nfs_removeargs args; 1745 struct nfs_removeres res; 1746 struct dentry *dentry; 1747 const struct cred *cred; 1748 struct nfs_fattr dir_attr; 1749 long timeout; 1750 }; 1751 1752 struct nfs_renamedata { 1753 struct nfs_renameargs args; 1754 struct nfs_renameres res; 1755 struct rpc_task task; 1756 const struct cred *cred; 1757 struct inode *old_dir; 1758 struct dentry *old_dentry; 1759 struct nfs_fattr old_fattr; 1760 struct inode *new_dir; 1761 struct dentry *new_dentry; 1762 struct nfs_fattr new_fattr; 1763 void (*complete)(struct rpc_task *, struct nfs_renamedata *); 1764 long timeout; 1765 bool cancelled; 1766 }; 1767 1768 struct nfs_access_entry; 1769 struct nfs_client; 1770 struct rpc_timeout; 1771 struct nfs_subversion; 1772 struct nfs_mount_info; 1773 struct nfs_client_initdata; 1774 struct nfs_pageio_descriptor; 1775 struct fs_context; 1776 1777 /* 1778 * RPC procedure vector for NFSv2/NFSv3 demuxing 1779 */ 1780 struct nfs_rpc_ops { 1781 u32 version; /* Protocol version */ 1782 const struct dentry_operations *dentry_ops; 1783 const struct inode_operations *dir_inode_ops; 1784 const struct inode_operations *file_inode_ops; 1785 const struct file_operations *file_ops; 1786 const struct nlmclnt_operations *nlmclnt_ops; 1787 1788 int (*getroot) (struct nfs_server *, struct nfs_fh *, 1789 struct nfs_fsinfo *); 1790 int (*submount) (struct fs_context *, struct nfs_server *); 1791 int (*try_get_tree) (struct fs_context *); 1792 int (*getattr) (struct nfs_server *, struct nfs_fh *, 1793 struct nfs_fattr *, struct inode *); 1794 int (*setattr) (struct dentry *, struct nfs_fattr *, 1795 struct iattr *); 1796 int (*lookup) (struct inode *, struct dentry *, const struct qstr *, 1797 struct nfs_fh *, struct nfs_fattr *); 1798 int (*lookupp) (struct inode *, struct nfs_fh *, 1799 struct nfs_fattr *); 1800 int (*access) (struct inode *, struct nfs_access_entry *, const struct cred *); 1801 int (*readlink)(struct inode *, struct page *, unsigned int, 1802 unsigned int); 1803 int (*create) (struct inode *, struct dentry *, 1804 struct iattr *, int); 1805 int (*remove) (struct inode *, struct dentry *); 1806 void (*unlink_setup) (struct rpc_message *, struct dentry *, struct inode *); 1807 void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *); 1808 int (*unlink_done) (struct rpc_task *, struct inode *); 1809 void (*rename_setup) (struct rpc_message *msg, 1810 struct dentry *old_dentry, 1811 struct dentry *new_dentry, 1812 struct inode *same_parent); 1813 void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *); 1814 int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir); 1815 int (*link) (struct inode *, struct inode *, const struct qstr *); 1816 int (*symlink) (struct inode *, struct dentry *, struct folio *, 1817 unsigned int, struct iattr *); 1818 struct dentry *(*mkdir) (struct inode *, struct dentry *, struct iattr *); 1819 int (*rmdir) (struct inode *, const struct qstr *); 1820 int (*readdir) (struct nfs_readdir_arg *, struct nfs_readdir_res *); 1821 int (*mknod) (struct inode *, struct dentry *, struct iattr *, 1822 dev_t); 1823 int (*statfs) (struct nfs_server *, struct nfs_fh *, 1824 struct nfs_fsstat *); 1825 int (*fsinfo) (struct nfs_server *, struct nfs_fh *, 1826 struct nfs_fsinfo *); 1827 int (*pathconf) (struct nfs_server *, struct nfs_fh *, 1828 struct nfs_pathconf *); 1829 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *); 1830 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool); 1831 int (*pgio_rpc_prepare)(struct rpc_task *, 1832 struct nfs_pgio_header *); 1833 void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *); 1834 int (*read_done)(struct rpc_task *, struct nfs_pgio_header *); 1835 void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *, 1836 struct rpc_clnt **); 1837 int (*write_done)(struct rpc_task *, struct nfs_pgio_header *); 1838 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *, 1839 struct rpc_clnt **); 1840 void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *); 1841 int (*commit_done) (struct rpc_task *, struct nfs_commit_data *); 1842 int (*lock)(struct file *, int, struct file_lock *); 1843 int (*lock_check_bounds)(const struct file_lock *); 1844 void (*clear_acl_cache)(struct inode *); 1845 void (*close_context)(struct nfs_open_context *ctx, int); 1846 struct inode * (*open_context) (struct inode *dir, 1847 struct nfs_open_context *ctx, 1848 int open_flags, 1849 struct iattr *iattr, 1850 int *); 1851 int (*have_delegation)(struct inode *, fmode_t, int); 1852 void (*return_delegation)(struct inode *); 1853 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *); 1854 struct nfs_client *(*init_client) (struct nfs_client *, 1855 const struct nfs_client_initdata *); 1856 void (*free_client) (struct nfs_client *); 1857 struct nfs_server *(*create_server)(struct fs_context *); 1858 struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *, 1859 struct nfs_fattr *, rpc_authflavor_t); 1860 int (*discover_trunking)(struct nfs_server *, struct nfs_fh *); 1861 void (*enable_swap)(struct inode *inode); 1862 void (*disable_swap)(struct inode *inode); 1863 }; 1864 1865 /* 1866 * Helper functions used by NFS client and/or server 1867 */ 1868 static inline void encode_opaque_fixed(struct xdr_stream *xdr, 1869 const void *buf, size_t len) 1870 { 1871 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); 1872 } 1873 1874 static inline int decode_opaque_fixed(struct xdr_stream *xdr, 1875 void *buf, size_t len) 1876 { 1877 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 1878 if (unlikely(ret < 0)) 1879 return -EIO; 1880 return 0; 1881 } 1882 1883 /* 1884 * Function vectors etc. for the NFS client 1885 */ 1886 extern const struct nfs_rpc_ops nfs_v2_clientops; 1887 extern const struct nfs_rpc_ops nfs_v3_clientops; 1888 extern const struct nfs_rpc_ops nfs_v4_clientops; 1889 extern const struct rpc_version nfs_version2; 1890 extern const struct rpc_version nfs_version3; 1891 extern const struct rpc_version nfs_version4; 1892 1893 extern const struct rpc_version nfsacl_version3; 1894 extern const struct rpc_program nfsacl_program; 1895 1896 #endif /* _LINUX_NFS_XDR_H */ 1897