1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */ 2 /* 3 This file defines the kernel interface of FUSE 4 Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu> 5 6 This program can be distributed under the terms of the GNU GPL. 7 See the file COPYING. 8 9 This -- and only this -- header file may also be distributed under 10 the terms of the BSD Licence as follows: 11 12 Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved. 13 14 Redistribution and use in source and binary forms, with or without 15 modification, are permitted provided that the following conditions 16 are met: 17 1. Redistributions of source code must retain the above copyright 18 notice, this list of conditions and the following disclaimer. 19 2. Redistributions in binary form must reproduce the above copyright 20 notice, this list of conditions and the following disclaimer in the 21 documentation and/or other materials provided with the distribution. 22 23 THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 27 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 SUCH DAMAGE. 34 */ 35 36 /* 37 * This file defines the kernel interface of FUSE 38 * 39 * Protocol changelog: 40 * 41 * 7.9: 42 * - new fuse_getattr_in input argument of GETATTR 43 * - add lk_flags in fuse_lk_in 44 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in 45 * - add blksize field to fuse_attr 46 * - add file flags field to fuse_read_in and fuse_write_in 47 * 48 * 7.10 49 * - add nonseekable open flag 50 * 51 * 7.11 52 * - add IOCTL message 53 * - add unsolicited notification support 54 * - add POLL message and NOTIFY_POLL notification 55 * 56 * 7.12 57 * - add umask flag to input argument of open, mknod and mkdir 58 * - add notification messages for invalidation of inodes and 59 * directory entries 60 * 61 * 7.13 62 * - make max number of background requests and congestion threshold 63 * tunables 64 * 65 * 7.14 66 * - add splice support to fuse device 67 * 68 * 7.15 69 * - add store notify 70 * - add retrieve notify 71 * 72 * 7.16 73 * - add BATCH_FORGET request 74 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct 75 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec' 76 * - add FUSE_IOCTL_32BIT flag 77 * 78 * 7.17 79 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK 80 * 81 * 7.18 82 * - add FUSE_IOCTL_DIR flag 83 * - add FUSE_NOTIFY_DELETE 84 * 85 * 7.19 86 * - add FUSE_FALLOCATE 87 * 88 * 7.20 89 * - add FUSE_AUTO_INVAL_DATA 90 * 91 * 7.21 92 * - add FUSE_READDIRPLUS 93 * - send the requested events in POLL request 94 * 95 * 7.22 96 * - add FUSE_ASYNC_DIO 97 * 98 * 7.23 99 * - add FUSE_WRITEBACK_CACHE 100 * - add time_gran to fuse_init_out 101 * - add reserved space to fuse_init_out 102 * - add FATTR_CTIME 103 * - add ctime and ctimensec to fuse_setattr_in 104 * - add FUSE_RENAME2 request 105 * - add FUSE_NO_OPEN_SUPPORT flag 106 * 107 * 7.24 108 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support 109 * 110 * 7.25 111 * - add FUSE_PARALLEL_DIROPS 112 * 113 * 7.26 114 * - add FUSE_HANDLE_KILLPRIV 115 * - add FUSE_POSIX_ACL 116 * 117 * 7.27 118 * - add FUSE_ABORT_ERROR 119 * 120 * 7.28 121 * - add FUSE_COPY_FILE_RANGE 122 * - add FOPEN_CACHE_DIR 123 * - add FUSE_MAX_PAGES, add max_pages to init_out 124 * - add FUSE_CACHE_SYMLINKS 125 */ 126 127 #ifndef _LINUX_FUSE_H 128 #define _LINUX_FUSE_H 129 130 #ifdef __KERNEL__ 131 #include <linux/types.h> 132 #else 133 #include <stdint.h> 134 #endif 135 136 /* 137 * Version negotiation: 138 * 139 * Both the kernel and userspace send the version they support in the 140 * INIT request and reply respectively. 141 * 142 * If the major versions match then both shall use the smallest 143 * of the two minor versions for communication. 144 * 145 * If the kernel supports a larger major version, then userspace shall 146 * reply with the major version it supports, ignore the rest of the 147 * INIT message and expect a new INIT message from the kernel with a 148 * matching major version. 149 * 150 * If the library supports a larger major version, then it shall fall 151 * back to the major protocol version sent by the kernel for 152 * communication and reply with that major version (and an arbitrary 153 * supported minor version). 154 */ 155 156 /** Version number of this interface */ 157 #define FUSE_KERNEL_VERSION 7 158 159 /** Minor version number of this interface */ 160 #define FUSE_KERNEL_MINOR_VERSION 28 161 162 /** The node ID of the root inode */ 163 #define FUSE_ROOT_ID 1 164 165 /* Make sure all structures are padded to 64bit boundary, so 32bit 166 userspace works under 64bit kernels */ 167 168 struct fuse_attr { 169 uint64_t ino; 170 uint64_t size; 171 uint64_t blocks; 172 uint64_t atime; 173 uint64_t mtime; 174 uint64_t ctime; 175 uint32_t atimensec; 176 uint32_t mtimensec; 177 uint32_t ctimensec; 178 uint32_t mode; 179 uint32_t nlink; 180 uint32_t uid; 181 uint32_t gid; 182 uint32_t rdev; 183 uint32_t blksize; 184 uint32_t padding; 185 }; 186 187 struct fuse_kstatfs { 188 uint64_t blocks; 189 uint64_t bfree; 190 uint64_t bavail; 191 uint64_t files; 192 uint64_t ffree; 193 uint32_t bsize; 194 uint32_t namelen; 195 uint32_t frsize; 196 uint32_t padding; 197 uint32_t spare[6]; 198 }; 199 200 struct fuse_file_lock { 201 uint64_t start; 202 uint64_t end; 203 uint32_t type; 204 uint32_t pid; /* tgid */ 205 }; 206 207 /** 208 * Bitmasks for fuse_setattr_in.valid 209 */ 210 #define FATTR_MODE (1 << 0) 211 #define FATTR_UID (1 << 1) 212 #define FATTR_GID (1 << 2) 213 #define FATTR_SIZE (1 << 3) 214 #define FATTR_ATIME (1 << 4) 215 #define FATTR_MTIME (1 << 5) 216 #define FATTR_FH (1 << 6) 217 #define FATTR_ATIME_NOW (1 << 7) 218 #define FATTR_MTIME_NOW (1 << 8) 219 #define FATTR_LOCKOWNER (1 << 9) 220 #define FATTR_CTIME (1 << 10) 221 222 /** 223 * Flags returned by the OPEN request 224 * 225 * FOPEN_DIRECT_IO: bypass page cache for this open file 226 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 227 * FOPEN_NONSEEKABLE: the file is not seekable 228 * FOPEN_CACHE_DIR: allow caching this directory 229 */ 230 #define FOPEN_DIRECT_IO (1 << 0) 231 #define FOPEN_KEEP_CACHE (1 << 1) 232 #define FOPEN_NONSEEKABLE (1 << 2) 233 #define FOPEN_CACHE_DIR (1 << 3) 234 235 /** 236 * INIT request/reply flags 237 * 238 * FUSE_ASYNC_READ: asynchronous read requests 239 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 240 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 241 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 242 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 243 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 244 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 245 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 246 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 247 * FUSE_SPLICE_READ: kernel supports splice read on the device 248 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 249 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 250 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 251 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 252 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 253 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 254 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 255 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 256 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 257 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 258 * FUSE_POSIX_ACL: filesystem supports posix acls 259 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 260 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 261 * FUSE_CACHE_SYMLINKS: cache READLINK responses 262 */ 263 #define FUSE_ASYNC_READ (1 << 0) 264 #define FUSE_POSIX_LOCKS (1 << 1) 265 #define FUSE_FILE_OPS (1 << 2) 266 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 267 #define FUSE_EXPORT_SUPPORT (1 << 4) 268 #define FUSE_BIG_WRITES (1 << 5) 269 #define FUSE_DONT_MASK (1 << 6) 270 #define FUSE_SPLICE_WRITE (1 << 7) 271 #define FUSE_SPLICE_MOVE (1 << 8) 272 #define FUSE_SPLICE_READ (1 << 9) 273 #define FUSE_FLOCK_LOCKS (1 << 10) 274 #define FUSE_HAS_IOCTL_DIR (1 << 11) 275 #define FUSE_AUTO_INVAL_DATA (1 << 12) 276 #define FUSE_DO_READDIRPLUS (1 << 13) 277 #define FUSE_READDIRPLUS_AUTO (1 << 14) 278 #define FUSE_ASYNC_DIO (1 << 15) 279 #define FUSE_WRITEBACK_CACHE (1 << 16) 280 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 281 #define FUSE_PARALLEL_DIROPS (1 << 18) 282 #define FUSE_HANDLE_KILLPRIV (1 << 19) 283 #define FUSE_POSIX_ACL (1 << 20) 284 #define FUSE_ABORT_ERROR (1 << 21) 285 #define FUSE_MAX_PAGES (1 << 22) 286 #define FUSE_CACHE_SYMLINKS (1 << 23) 287 288 /** 289 * CUSE INIT request/reply flags 290 * 291 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 292 */ 293 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 294 295 /** 296 * Release flags 297 */ 298 #define FUSE_RELEASE_FLUSH (1 << 0) 299 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 300 301 /** 302 * Getattr flags 303 */ 304 #define FUSE_GETATTR_FH (1 << 0) 305 306 /** 307 * Lock flags 308 */ 309 #define FUSE_LK_FLOCK (1 << 0) 310 311 /** 312 * WRITE flags 313 * 314 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 315 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 316 */ 317 #define FUSE_WRITE_CACHE (1 << 0) 318 #define FUSE_WRITE_LOCKOWNER (1 << 1) 319 320 /** 321 * Read flags 322 */ 323 #define FUSE_READ_LOCKOWNER (1 << 1) 324 325 /** 326 * Ioctl flags 327 * 328 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 329 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 330 * FUSE_IOCTL_RETRY: retry with new iovecs 331 * FUSE_IOCTL_32BIT: 32bit ioctl 332 * FUSE_IOCTL_DIR: is a directory 333 * 334 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 335 */ 336 #define FUSE_IOCTL_COMPAT (1 << 0) 337 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 338 #define FUSE_IOCTL_RETRY (1 << 2) 339 #define FUSE_IOCTL_32BIT (1 << 3) 340 #define FUSE_IOCTL_DIR (1 << 4) 341 342 #define FUSE_IOCTL_MAX_IOV 256 343 344 /** 345 * Poll flags 346 * 347 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 348 */ 349 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 350 351 enum fuse_opcode { 352 FUSE_LOOKUP = 1, 353 FUSE_FORGET = 2, /* no reply */ 354 FUSE_GETATTR = 3, 355 FUSE_SETATTR = 4, 356 FUSE_READLINK = 5, 357 FUSE_SYMLINK = 6, 358 FUSE_MKNOD = 8, 359 FUSE_MKDIR = 9, 360 FUSE_UNLINK = 10, 361 FUSE_RMDIR = 11, 362 FUSE_RENAME = 12, 363 FUSE_LINK = 13, 364 FUSE_OPEN = 14, 365 FUSE_READ = 15, 366 FUSE_WRITE = 16, 367 FUSE_STATFS = 17, 368 FUSE_RELEASE = 18, 369 FUSE_FSYNC = 20, 370 FUSE_SETXATTR = 21, 371 FUSE_GETXATTR = 22, 372 FUSE_LISTXATTR = 23, 373 FUSE_REMOVEXATTR = 24, 374 FUSE_FLUSH = 25, 375 FUSE_INIT = 26, 376 FUSE_OPENDIR = 27, 377 FUSE_READDIR = 28, 378 FUSE_RELEASEDIR = 29, 379 FUSE_FSYNCDIR = 30, 380 FUSE_GETLK = 31, 381 FUSE_SETLK = 32, 382 FUSE_SETLKW = 33, 383 FUSE_ACCESS = 34, 384 FUSE_CREATE = 35, 385 FUSE_INTERRUPT = 36, 386 FUSE_BMAP = 37, 387 FUSE_DESTROY = 38, 388 FUSE_IOCTL = 39, 389 FUSE_POLL = 40, 390 FUSE_NOTIFY_REPLY = 41, 391 FUSE_BATCH_FORGET = 42, 392 FUSE_FALLOCATE = 43, 393 FUSE_READDIRPLUS = 44, 394 FUSE_RENAME2 = 45, 395 FUSE_LSEEK = 46, 396 FUSE_COPY_FILE_RANGE = 47, 397 398 /* CUSE specific operations */ 399 CUSE_INIT = 4096, 400 }; 401 402 enum fuse_notify_code { 403 FUSE_NOTIFY_POLL = 1, 404 FUSE_NOTIFY_INVAL_INODE = 2, 405 FUSE_NOTIFY_INVAL_ENTRY = 3, 406 FUSE_NOTIFY_STORE = 4, 407 FUSE_NOTIFY_RETRIEVE = 5, 408 FUSE_NOTIFY_DELETE = 6, 409 FUSE_NOTIFY_CODE_MAX, 410 }; 411 412 /* The read buffer is required to be at least 8k, but may be much larger */ 413 #define FUSE_MIN_READ_BUFFER 8192 414 415 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 416 417 struct fuse_entry_out { 418 uint64_t nodeid; /* Inode ID */ 419 uint64_t generation; /* Inode generation: nodeid:gen must 420 be unique for the fs's lifetime */ 421 uint64_t entry_valid; /* Cache timeout for the name */ 422 uint64_t attr_valid; /* Cache timeout for the attributes */ 423 uint32_t entry_valid_nsec; 424 uint32_t attr_valid_nsec; 425 struct fuse_attr attr; 426 }; 427 428 struct fuse_forget_in { 429 uint64_t nlookup; 430 }; 431 432 struct fuse_forget_one { 433 uint64_t nodeid; 434 uint64_t nlookup; 435 }; 436 437 struct fuse_batch_forget_in { 438 uint32_t count; 439 uint32_t dummy; 440 }; 441 442 struct fuse_getattr_in { 443 uint32_t getattr_flags; 444 uint32_t dummy; 445 uint64_t fh; 446 }; 447 448 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 449 450 struct fuse_attr_out { 451 uint64_t attr_valid; /* Cache timeout for the attributes */ 452 uint32_t attr_valid_nsec; 453 uint32_t dummy; 454 struct fuse_attr attr; 455 }; 456 457 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 458 459 struct fuse_mknod_in { 460 uint32_t mode; 461 uint32_t rdev; 462 uint32_t umask; 463 uint32_t padding; 464 }; 465 466 struct fuse_mkdir_in { 467 uint32_t mode; 468 uint32_t umask; 469 }; 470 471 struct fuse_rename_in { 472 uint64_t newdir; 473 }; 474 475 struct fuse_rename2_in { 476 uint64_t newdir; 477 uint32_t flags; 478 uint32_t padding; 479 }; 480 481 struct fuse_link_in { 482 uint64_t oldnodeid; 483 }; 484 485 struct fuse_setattr_in { 486 uint32_t valid; 487 uint32_t padding; 488 uint64_t fh; 489 uint64_t size; 490 uint64_t lock_owner; 491 uint64_t atime; 492 uint64_t mtime; 493 uint64_t ctime; 494 uint32_t atimensec; 495 uint32_t mtimensec; 496 uint32_t ctimensec; 497 uint32_t mode; 498 uint32_t unused4; 499 uint32_t uid; 500 uint32_t gid; 501 uint32_t unused5; 502 }; 503 504 struct fuse_open_in { 505 uint32_t flags; 506 uint32_t unused; 507 }; 508 509 struct fuse_create_in { 510 uint32_t flags; 511 uint32_t mode; 512 uint32_t umask; 513 uint32_t padding; 514 }; 515 516 struct fuse_open_out { 517 uint64_t fh; 518 uint32_t open_flags; 519 uint32_t padding; 520 }; 521 522 struct fuse_release_in { 523 uint64_t fh; 524 uint32_t flags; 525 uint32_t release_flags; 526 uint64_t lock_owner; 527 }; 528 529 struct fuse_flush_in { 530 uint64_t fh; 531 uint32_t unused; 532 uint32_t padding; 533 uint64_t lock_owner; 534 }; 535 536 struct fuse_read_in { 537 uint64_t fh; 538 uint64_t offset; 539 uint32_t size; 540 uint32_t read_flags; 541 uint64_t lock_owner; 542 uint32_t flags; 543 uint32_t padding; 544 }; 545 546 #define FUSE_COMPAT_WRITE_IN_SIZE 24 547 548 struct fuse_write_in { 549 uint64_t fh; 550 uint64_t offset; 551 uint32_t size; 552 uint32_t write_flags; 553 uint64_t lock_owner; 554 uint32_t flags; 555 uint32_t padding; 556 }; 557 558 struct fuse_write_out { 559 uint32_t size; 560 uint32_t padding; 561 }; 562 563 #define FUSE_COMPAT_STATFS_SIZE 48 564 565 struct fuse_statfs_out { 566 struct fuse_kstatfs st; 567 }; 568 569 struct fuse_fsync_in { 570 uint64_t fh; 571 uint32_t fsync_flags; 572 uint32_t padding; 573 }; 574 575 struct fuse_setxattr_in { 576 uint32_t size; 577 uint32_t flags; 578 }; 579 580 struct fuse_getxattr_in { 581 uint32_t size; 582 uint32_t padding; 583 }; 584 585 struct fuse_getxattr_out { 586 uint32_t size; 587 uint32_t padding; 588 }; 589 590 struct fuse_lk_in { 591 uint64_t fh; 592 uint64_t owner; 593 struct fuse_file_lock lk; 594 uint32_t lk_flags; 595 uint32_t padding; 596 }; 597 598 struct fuse_lk_out { 599 struct fuse_file_lock lk; 600 }; 601 602 struct fuse_access_in { 603 uint32_t mask; 604 uint32_t padding; 605 }; 606 607 struct fuse_init_in { 608 uint32_t major; 609 uint32_t minor; 610 uint32_t max_readahead; 611 uint32_t flags; 612 }; 613 614 #define FUSE_COMPAT_INIT_OUT_SIZE 8 615 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 616 617 struct fuse_init_out { 618 uint32_t major; 619 uint32_t minor; 620 uint32_t max_readahead; 621 uint32_t flags; 622 uint16_t max_background; 623 uint16_t congestion_threshold; 624 uint32_t max_write; 625 uint32_t time_gran; 626 uint16_t max_pages; 627 uint16_t padding; 628 uint32_t unused[8]; 629 }; 630 631 #define CUSE_INIT_INFO_MAX 4096 632 633 struct cuse_init_in { 634 uint32_t major; 635 uint32_t minor; 636 uint32_t unused; 637 uint32_t flags; 638 }; 639 640 struct cuse_init_out { 641 uint32_t major; 642 uint32_t minor; 643 uint32_t unused; 644 uint32_t flags; 645 uint32_t max_read; 646 uint32_t max_write; 647 uint32_t dev_major; /* chardev major */ 648 uint32_t dev_minor; /* chardev minor */ 649 uint32_t spare[10]; 650 }; 651 652 struct fuse_interrupt_in { 653 uint64_t unique; 654 }; 655 656 struct fuse_bmap_in { 657 uint64_t block; 658 uint32_t blocksize; 659 uint32_t padding; 660 }; 661 662 struct fuse_bmap_out { 663 uint64_t block; 664 }; 665 666 struct fuse_ioctl_in { 667 uint64_t fh; 668 uint32_t flags; 669 uint32_t cmd; 670 uint64_t arg; 671 uint32_t in_size; 672 uint32_t out_size; 673 }; 674 675 struct fuse_ioctl_iovec { 676 uint64_t base; 677 uint64_t len; 678 }; 679 680 struct fuse_ioctl_out { 681 int32_t result; 682 uint32_t flags; 683 uint32_t in_iovs; 684 uint32_t out_iovs; 685 }; 686 687 struct fuse_poll_in { 688 uint64_t fh; 689 uint64_t kh; 690 uint32_t flags; 691 uint32_t events; 692 }; 693 694 struct fuse_poll_out { 695 uint32_t revents; 696 uint32_t padding; 697 }; 698 699 struct fuse_notify_poll_wakeup_out { 700 uint64_t kh; 701 }; 702 703 struct fuse_fallocate_in { 704 uint64_t fh; 705 uint64_t offset; 706 uint64_t length; 707 uint32_t mode; 708 uint32_t padding; 709 }; 710 711 struct fuse_in_header { 712 uint32_t len; 713 uint32_t opcode; 714 uint64_t unique; 715 uint64_t nodeid; 716 uint32_t uid; 717 uint32_t gid; 718 uint32_t pid; 719 uint32_t padding; 720 }; 721 722 struct fuse_out_header { 723 uint32_t len; 724 int32_t error; 725 uint64_t unique; 726 }; 727 728 struct fuse_dirent { 729 uint64_t ino; 730 uint64_t off; 731 uint32_t namelen; 732 uint32_t type; 733 char name[]; 734 }; 735 736 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 737 #define FUSE_DIRENT_ALIGN(x) \ 738 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 739 #define FUSE_DIRENT_SIZE(d) \ 740 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 741 742 struct fuse_direntplus { 743 struct fuse_entry_out entry_out; 744 struct fuse_dirent dirent; 745 }; 746 747 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 748 offsetof(struct fuse_direntplus, dirent.name) 749 #define FUSE_DIRENTPLUS_SIZE(d) \ 750 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 751 752 struct fuse_notify_inval_inode_out { 753 uint64_t ino; 754 int64_t off; 755 int64_t len; 756 }; 757 758 struct fuse_notify_inval_entry_out { 759 uint64_t parent; 760 uint32_t namelen; 761 uint32_t padding; 762 }; 763 764 struct fuse_notify_delete_out { 765 uint64_t parent; 766 uint64_t child; 767 uint32_t namelen; 768 uint32_t padding; 769 }; 770 771 struct fuse_notify_store_out { 772 uint64_t nodeid; 773 uint64_t offset; 774 uint32_t size; 775 uint32_t padding; 776 }; 777 778 struct fuse_notify_retrieve_out { 779 uint64_t notify_unique; 780 uint64_t nodeid; 781 uint64_t offset; 782 uint32_t size; 783 uint32_t padding; 784 }; 785 786 /* Matches the size of fuse_write_in */ 787 struct fuse_notify_retrieve_in { 788 uint64_t dummy1; 789 uint64_t offset; 790 uint32_t size; 791 uint32_t dummy2; 792 uint64_t dummy3; 793 uint64_t dummy4; 794 }; 795 796 /* Device ioctls: */ 797 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t) 798 799 struct fuse_lseek_in { 800 uint64_t fh; 801 uint64_t offset; 802 uint32_t whence; 803 uint32_t padding; 804 }; 805 806 struct fuse_lseek_out { 807 uint64_t offset; 808 }; 809 810 struct fuse_copy_file_range_in { 811 uint64_t fh_in; 812 uint64_t off_in; 813 uint64_t nodeid_out; 814 uint64_t fh_out; 815 uint64_t off_out; 816 uint64_t len; 817 uint64_t flags; 818 }; 819 820 #endif /* _LINUX_FUSE_H */ 821