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 <[email protected]> 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 * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in 48 * 49 * 7.10 50 * - add nonseekable open flag 51 * 52 * 7.11 53 * - add IOCTL message 54 * - add unsolicited notification support 55 * - add POLL message and NOTIFY_POLL notification 56 * 57 * 7.12 58 * - add umask flag to input argument of create, mknod and mkdir 59 * - add notification messages for invalidation of inodes and 60 * directory entries 61 * 62 * 7.13 63 * - make max number of background requests and congestion threshold 64 * tunables 65 * 66 * 7.14 67 * - add splice support to fuse device 68 * 69 * 7.15 70 * - add store notify 71 * - add retrieve notify 72 * 73 * 7.16 74 * - add BATCH_FORGET request 75 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct 76 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec' 77 * - add FUSE_IOCTL_32BIT flag 78 * 79 * 7.17 80 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK 81 * 82 * 7.18 83 * - add FUSE_IOCTL_DIR flag 84 * - add FUSE_NOTIFY_DELETE 85 * 86 * 7.19 87 * - add FUSE_FALLOCATE 88 * 89 * 7.20 90 * - add FUSE_AUTO_INVAL_DATA 91 * 92 * 7.21 93 * - add FUSE_READDIRPLUS 94 * - send the requested events in POLL request 95 * 96 * 7.22 97 * - add FUSE_ASYNC_DIO 98 * 99 * 7.23 100 * - add FUSE_WRITEBACK_CACHE 101 * - add time_gran to fuse_init_out 102 * - add reserved space to fuse_init_out 103 * - add FATTR_CTIME 104 * - add ctime and ctimensec to fuse_setattr_in 105 * - add FUSE_RENAME2 request 106 * - add FUSE_NO_OPEN_SUPPORT flag 107 * 108 * 7.24 109 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support 110 * 111 * 7.25 112 * - add FUSE_PARALLEL_DIROPS 113 * 114 * 7.26 115 * - add FUSE_HANDLE_KILLPRIV 116 * - add FUSE_POSIX_ACL 117 * 118 * 7.27 119 * - add FUSE_ABORT_ERROR 120 * 121 * 7.28 122 * - add FUSE_COPY_FILE_RANGE 123 * - add FOPEN_CACHE_DIR 124 * - add FUSE_MAX_PAGES, add max_pages to init_out 125 * - add FUSE_CACHE_SYMLINKS 126 * 127 * 7.29 128 * - add FUSE_NO_OPENDIR_SUPPORT flag 129 * 130 * 7.30 131 * - add FUSE_EXPLICIT_INVAL_DATA 132 * - add FUSE_IOCTL_COMPAT_X32 133 */ 134 135 #ifndef _LINUX_FUSE_H 136 #define _LINUX_FUSE_H 137 138 #ifdef __KERNEL__ 139 #include <linux/types.h> 140 #else 141 #include <stdint.h> 142 #endif 143 144 /* 145 * Version negotiation: 146 * 147 * Both the kernel and userspace send the version they support in the 148 * INIT request and reply respectively. 149 * 150 * If the major versions match then both shall use the smallest 151 * of the two minor versions for communication. 152 * 153 * If the kernel supports a larger major version, then userspace shall 154 * reply with the major version it supports, ignore the rest of the 155 * INIT message and expect a new INIT message from the kernel with a 156 * matching major version. 157 * 158 * If the library supports a larger major version, then it shall fall 159 * back to the major protocol version sent by the kernel for 160 * communication and reply with that major version (and an arbitrary 161 * supported minor version). 162 */ 163 164 /** Version number of this interface */ 165 #define FUSE_KERNEL_VERSION 7 166 167 /** Minor version number of this interface */ 168 #define FUSE_KERNEL_MINOR_VERSION 30 169 170 /** The node ID of the root inode */ 171 #define FUSE_ROOT_ID 1 172 173 /* Make sure all structures are padded to 64bit boundary, so 32bit 174 userspace works under 64bit kernels */ 175 176 struct fuse_attr { 177 uint64_t ino; 178 uint64_t size; 179 uint64_t blocks; 180 uint64_t atime; 181 uint64_t mtime; 182 uint64_t ctime; 183 uint32_t atimensec; 184 uint32_t mtimensec; 185 uint32_t ctimensec; 186 uint32_t mode; 187 uint32_t nlink; 188 uint32_t uid; 189 uint32_t gid; 190 uint32_t rdev; 191 uint32_t blksize; 192 uint32_t padding; 193 }; 194 195 struct fuse_kstatfs { 196 uint64_t blocks; 197 uint64_t bfree; 198 uint64_t bavail; 199 uint64_t files; 200 uint64_t ffree; 201 uint32_t bsize; 202 uint32_t namelen; 203 uint32_t frsize; 204 uint32_t padding; 205 uint32_t spare[6]; 206 }; 207 208 struct fuse_file_lock { 209 uint64_t start; 210 uint64_t end; 211 uint32_t type; 212 uint32_t pid; /* tgid */ 213 }; 214 215 /** 216 * Bitmasks for fuse_setattr_in.valid 217 */ 218 #define FATTR_MODE (1 << 0) 219 #define FATTR_UID (1 << 1) 220 #define FATTR_GID (1 << 2) 221 #define FATTR_SIZE (1 << 3) 222 #define FATTR_ATIME (1 << 4) 223 #define FATTR_MTIME (1 << 5) 224 #define FATTR_FH (1 << 6) 225 #define FATTR_ATIME_NOW (1 << 7) 226 #define FATTR_MTIME_NOW (1 << 8) 227 #define FATTR_LOCKOWNER (1 << 9) 228 #define FATTR_CTIME (1 << 10) 229 230 /** 231 * Flags returned by the OPEN request 232 * 233 * FOPEN_DIRECT_IO: bypass page cache for this open file 234 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 235 * FOPEN_NONSEEKABLE: the file is not seekable 236 * FOPEN_CACHE_DIR: allow caching this directory 237 * FOPEN_STREAM: the file is stream-like (no file position at all) 238 */ 239 #define FOPEN_DIRECT_IO (1 << 0) 240 #define FOPEN_KEEP_CACHE (1 << 1) 241 #define FOPEN_NONSEEKABLE (1 << 2) 242 #define FOPEN_CACHE_DIR (1 << 3) 243 #define FOPEN_STREAM (1 << 4) 244 245 /** 246 * INIT request/reply flags 247 * 248 * FUSE_ASYNC_READ: asynchronous read requests 249 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 250 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 251 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 252 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 253 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 254 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 255 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 256 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 257 * FUSE_SPLICE_READ: kernel supports splice read on the device 258 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 259 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 260 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 261 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 262 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 263 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 264 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 265 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 266 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 267 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 268 * FUSE_POSIX_ACL: filesystem supports posix acls 269 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 270 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 271 * FUSE_CACHE_SYMLINKS: cache READLINK responses 272 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir 273 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request 274 */ 275 #define FUSE_ASYNC_READ (1 << 0) 276 #define FUSE_POSIX_LOCKS (1 << 1) 277 #define FUSE_FILE_OPS (1 << 2) 278 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 279 #define FUSE_EXPORT_SUPPORT (1 << 4) 280 #define FUSE_BIG_WRITES (1 << 5) 281 #define FUSE_DONT_MASK (1 << 6) 282 #define FUSE_SPLICE_WRITE (1 << 7) 283 #define FUSE_SPLICE_MOVE (1 << 8) 284 #define FUSE_SPLICE_READ (1 << 9) 285 #define FUSE_FLOCK_LOCKS (1 << 10) 286 #define FUSE_HAS_IOCTL_DIR (1 << 11) 287 #define FUSE_AUTO_INVAL_DATA (1 << 12) 288 #define FUSE_DO_READDIRPLUS (1 << 13) 289 #define FUSE_READDIRPLUS_AUTO (1 << 14) 290 #define FUSE_ASYNC_DIO (1 << 15) 291 #define FUSE_WRITEBACK_CACHE (1 << 16) 292 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 293 #define FUSE_PARALLEL_DIROPS (1 << 18) 294 #define FUSE_HANDLE_KILLPRIV (1 << 19) 295 #define FUSE_POSIX_ACL (1 << 20) 296 #define FUSE_ABORT_ERROR (1 << 21) 297 #define FUSE_MAX_PAGES (1 << 22) 298 #define FUSE_CACHE_SYMLINKS (1 << 23) 299 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24) 300 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25) 301 302 /** 303 * CUSE INIT request/reply flags 304 * 305 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 306 */ 307 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 308 309 /** 310 * Release flags 311 */ 312 #define FUSE_RELEASE_FLUSH (1 << 0) 313 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 314 315 /** 316 * Getattr flags 317 */ 318 #define FUSE_GETATTR_FH (1 << 0) 319 320 /** 321 * Lock flags 322 */ 323 #define FUSE_LK_FLOCK (1 << 0) 324 325 /** 326 * WRITE flags 327 * 328 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 329 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 330 */ 331 #define FUSE_WRITE_CACHE (1 << 0) 332 #define FUSE_WRITE_LOCKOWNER (1 << 1) 333 334 /** 335 * Read flags 336 */ 337 #define FUSE_READ_LOCKOWNER (1 << 1) 338 339 /** 340 * Ioctl flags 341 * 342 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 343 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 344 * FUSE_IOCTL_RETRY: retry with new iovecs 345 * FUSE_IOCTL_32BIT: 32bit ioctl 346 * FUSE_IOCTL_DIR: is a directory 347 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) 348 * 349 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 350 */ 351 #define FUSE_IOCTL_COMPAT (1 << 0) 352 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 353 #define FUSE_IOCTL_RETRY (1 << 2) 354 #define FUSE_IOCTL_32BIT (1 << 3) 355 #define FUSE_IOCTL_DIR (1 << 4) 356 #define FUSE_IOCTL_COMPAT_X32 (1 << 5) 357 358 #define FUSE_IOCTL_MAX_IOV 256 359 360 /** 361 * Poll flags 362 * 363 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 364 */ 365 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 366 367 /** 368 * Fsync flags 369 * 370 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata 371 */ 372 #define FUSE_FSYNC_FDATASYNC (1 << 0) 373 374 enum fuse_opcode { 375 FUSE_LOOKUP = 1, 376 FUSE_FORGET = 2, /* no reply */ 377 FUSE_GETATTR = 3, 378 FUSE_SETATTR = 4, 379 FUSE_READLINK = 5, 380 FUSE_SYMLINK = 6, 381 FUSE_MKNOD = 8, 382 FUSE_MKDIR = 9, 383 FUSE_UNLINK = 10, 384 FUSE_RMDIR = 11, 385 FUSE_RENAME = 12, 386 FUSE_LINK = 13, 387 FUSE_OPEN = 14, 388 FUSE_READ = 15, 389 FUSE_WRITE = 16, 390 FUSE_STATFS = 17, 391 FUSE_RELEASE = 18, 392 FUSE_FSYNC = 20, 393 FUSE_SETXATTR = 21, 394 FUSE_GETXATTR = 22, 395 FUSE_LISTXATTR = 23, 396 FUSE_REMOVEXATTR = 24, 397 FUSE_FLUSH = 25, 398 FUSE_INIT = 26, 399 FUSE_OPENDIR = 27, 400 FUSE_READDIR = 28, 401 FUSE_RELEASEDIR = 29, 402 FUSE_FSYNCDIR = 30, 403 FUSE_GETLK = 31, 404 FUSE_SETLK = 32, 405 FUSE_SETLKW = 33, 406 FUSE_ACCESS = 34, 407 FUSE_CREATE = 35, 408 FUSE_INTERRUPT = 36, 409 FUSE_BMAP = 37, 410 FUSE_DESTROY = 38, 411 FUSE_IOCTL = 39, 412 FUSE_POLL = 40, 413 FUSE_NOTIFY_REPLY = 41, 414 FUSE_BATCH_FORGET = 42, 415 FUSE_FALLOCATE = 43, 416 FUSE_READDIRPLUS = 44, 417 FUSE_RENAME2 = 45, 418 FUSE_LSEEK = 46, 419 FUSE_COPY_FILE_RANGE = 47, 420 421 /* CUSE specific operations */ 422 CUSE_INIT = 4096, 423 }; 424 425 enum fuse_notify_code { 426 FUSE_NOTIFY_POLL = 1, 427 FUSE_NOTIFY_INVAL_INODE = 2, 428 FUSE_NOTIFY_INVAL_ENTRY = 3, 429 FUSE_NOTIFY_STORE = 4, 430 FUSE_NOTIFY_RETRIEVE = 5, 431 FUSE_NOTIFY_DELETE = 6, 432 FUSE_NOTIFY_CODE_MAX, 433 }; 434 435 /* The read buffer is required to be at least 8k, but may be much larger */ 436 #define FUSE_MIN_READ_BUFFER 8192 437 438 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 439 440 struct fuse_entry_out { 441 uint64_t nodeid; /* Inode ID */ 442 uint64_t generation; /* Inode generation: nodeid:gen must 443 be unique for the fs's lifetime */ 444 uint64_t entry_valid; /* Cache timeout for the name */ 445 uint64_t attr_valid; /* Cache timeout for the attributes */ 446 uint32_t entry_valid_nsec; 447 uint32_t attr_valid_nsec; 448 struct fuse_attr attr; 449 }; 450 451 struct fuse_forget_in { 452 uint64_t nlookup; 453 }; 454 455 struct fuse_forget_one { 456 uint64_t nodeid; 457 uint64_t nlookup; 458 }; 459 460 struct fuse_batch_forget_in { 461 uint32_t count; 462 uint32_t dummy; 463 }; 464 465 struct fuse_getattr_in { 466 uint32_t getattr_flags; 467 uint32_t dummy; 468 uint64_t fh; 469 }; 470 471 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 472 473 struct fuse_attr_out { 474 uint64_t attr_valid; /* Cache timeout for the attributes */ 475 uint32_t attr_valid_nsec; 476 uint32_t dummy; 477 struct fuse_attr attr; 478 }; 479 480 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 481 482 struct fuse_mknod_in { 483 uint32_t mode; 484 uint32_t rdev; 485 uint32_t umask; 486 uint32_t padding; 487 }; 488 489 struct fuse_mkdir_in { 490 uint32_t mode; 491 uint32_t umask; 492 }; 493 494 struct fuse_rename_in { 495 uint64_t newdir; 496 }; 497 498 struct fuse_rename2_in { 499 uint64_t newdir; 500 uint32_t flags; 501 uint32_t padding; 502 }; 503 504 struct fuse_link_in { 505 uint64_t oldnodeid; 506 }; 507 508 struct fuse_setattr_in { 509 uint32_t valid; 510 uint32_t padding; 511 uint64_t fh; 512 uint64_t size; 513 uint64_t lock_owner; 514 uint64_t atime; 515 uint64_t mtime; 516 uint64_t ctime; 517 uint32_t atimensec; 518 uint32_t mtimensec; 519 uint32_t ctimensec; 520 uint32_t mode; 521 uint32_t unused4; 522 uint32_t uid; 523 uint32_t gid; 524 uint32_t unused5; 525 }; 526 527 struct fuse_open_in { 528 uint32_t flags; 529 uint32_t unused; 530 }; 531 532 struct fuse_create_in { 533 uint32_t flags; 534 uint32_t mode; 535 uint32_t umask; 536 uint32_t padding; 537 }; 538 539 struct fuse_open_out { 540 uint64_t fh; 541 uint32_t open_flags; 542 uint32_t padding; 543 }; 544 545 struct fuse_release_in { 546 uint64_t fh; 547 uint32_t flags; 548 uint32_t release_flags; 549 uint64_t lock_owner; 550 }; 551 552 struct fuse_flush_in { 553 uint64_t fh; 554 uint32_t unused; 555 uint32_t padding; 556 uint64_t lock_owner; 557 }; 558 559 struct fuse_read_in { 560 uint64_t fh; 561 uint64_t offset; 562 uint32_t size; 563 uint32_t read_flags; 564 uint64_t lock_owner; 565 uint32_t flags; 566 uint32_t padding; 567 }; 568 569 #define FUSE_COMPAT_WRITE_IN_SIZE 24 570 571 struct fuse_write_in { 572 uint64_t fh; 573 uint64_t offset; 574 uint32_t size; 575 uint32_t write_flags; 576 uint64_t lock_owner; 577 uint32_t flags; 578 uint32_t padding; 579 }; 580 581 struct fuse_write_out { 582 uint32_t size; 583 uint32_t padding; 584 }; 585 586 #define FUSE_COMPAT_STATFS_SIZE 48 587 588 struct fuse_statfs_out { 589 struct fuse_kstatfs st; 590 }; 591 592 struct fuse_fsync_in { 593 uint64_t fh; 594 uint32_t fsync_flags; 595 uint32_t padding; 596 }; 597 598 struct fuse_setxattr_in { 599 uint32_t size; 600 uint32_t flags; 601 }; 602 603 struct fuse_getxattr_in { 604 uint32_t size; 605 uint32_t padding; 606 }; 607 608 struct fuse_getxattr_out { 609 uint32_t size; 610 uint32_t padding; 611 }; 612 613 struct fuse_lk_in { 614 uint64_t fh; 615 uint64_t owner; 616 struct fuse_file_lock lk; 617 uint32_t lk_flags; 618 uint32_t padding; 619 }; 620 621 struct fuse_lk_out { 622 struct fuse_file_lock lk; 623 }; 624 625 struct fuse_access_in { 626 uint32_t mask; 627 uint32_t padding; 628 }; 629 630 struct fuse_init_in { 631 uint32_t major; 632 uint32_t minor; 633 uint32_t max_readahead; 634 uint32_t flags; 635 }; 636 637 #define FUSE_COMPAT_INIT_OUT_SIZE 8 638 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 639 640 struct fuse_init_out { 641 uint32_t major; 642 uint32_t minor; 643 uint32_t max_readahead; 644 uint32_t flags; 645 uint16_t max_background; 646 uint16_t congestion_threshold; 647 uint32_t max_write; 648 uint32_t time_gran; 649 uint16_t max_pages; 650 uint16_t padding; 651 uint32_t unused[8]; 652 }; 653 654 #define CUSE_INIT_INFO_MAX 4096 655 656 struct cuse_init_in { 657 uint32_t major; 658 uint32_t minor; 659 uint32_t unused; 660 uint32_t flags; 661 }; 662 663 struct cuse_init_out { 664 uint32_t major; 665 uint32_t minor; 666 uint32_t unused; 667 uint32_t flags; 668 uint32_t max_read; 669 uint32_t max_write; 670 uint32_t dev_major; /* chardev major */ 671 uint32_t dev_minor; /* chardev minor */ 672 uint32_t spare[10]; 673 }; 674 675 struct fuse_interrupt_in { 676 uint64_t unique; 677 }; 678 679 struct fuse_bmap_in { 680 uint64_t block; 681 uint32_t blocksize; 682 uint32_t padding; 683 }; 684 685 struct fuse_bmap_out { 686 uint64_t block; 687 }; 688 689 struct fuse_ioctl_in { 690 uint64_t fh; 691 uint32_t flags; 692 uint32_t cmd; 693 uint64_t arg; 694 uint32_t in_size; 695 uint32_t out_size; 696 }; 697 698 struct fuse_ioctl_iovec { 699 uint64_t base; 700 uint64_t len; 701 }; 702 703 struct fuse_ioctl_out { 704 int32_t result; 705 uint32_t flags; 706 uint32_t in_iovs; 707 uint32_t out_iovs; 708 }; 709 710 struct fuse_poll_in { 711 uint64_t fh; 712 uint64_t kh; 713 uint32_t flags; 714 uint32_t events; 715 }; 716 717 struct fuse_poll_out { 718 uint32_t revents; 719 uint32_t padding; 720 }; 721 722 struct fuse_notify_poll_wakeup_out { 723 uint64_t kh; 724 }; 725 726 struct fuse_fallocate_in { 727 uint64_t fh; 728 uint64_t offset; 729 uint64_t length; 730 uint32_t mode; 731 uint32_t padding; 732 }; 733 734 struct fuse_in_header { 735 uint32_t len; 736 uint32_t opcode; 737 uint64_t unique; 738 uint64_t nodeid; 739 uint32_t uid; 740 uint32_t gid; 741 uint32_t pid; 742 uint32_t padding; 743 }; 744 745 struct fuse_out_header { 746 uint32_t len; 747 int32_t error; 748 uint64_t unique; 749 }; 750 751 struct fuse_dirent { 752 uint64_t ino; 753 uint64_t off; 754 uint32_t namelen; 755 uint32_t type; 756 char name[]; 757 }; 758 759 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 760 #define FUSE_DIRENT_ALIGN(x) \ 761 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 762 #define FUSE_DIRENT_SIZE(d) \ 763 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 764 765 struct fuse_direntplus { 766 struct fuse_entry_out entry_out; 767 struct fuse_dirent dirent; 768 }; 769 770 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 771 offsetof(struct fuse_direntplus, dirent.name) 772 #define FUSE_DIRENTPLUS_SIZE(d) \ 773 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 774 775 struct fuse_notify_inval_inode_out { 776 uint64_t ino; 777 int64_t off; 778 int64_t len; 779 }; 780 781 struct fuse_notify_inval_entry_out { 782 uint64_t parent; 783 uint32_t namelen; 784 uint32_t padding; 785 }; 786 787 struct fuse_notify_delete_out { 788 uint64_t parent; 789 uint64_t child; 790 uint32_t namelen; 791 uint32_t padding; 792 }; 793 794 struct fuse_notify_store_out { 795 uint64_t nodeid; 796 uint64_t offset; 797 uint32_t size; 798 uint32_t padding; 799 }; 800 801 struct fuse_notify_retrieve_out { 802 uint64_t notify_unique; 803 uint64_t nodeid; 804 uint64_t offset; 805 uint32_t size; 806 uint32_t padding; 807 }; 808 809 /* Matches the size of fuse_write_in */ 810 struct fuse_notify_retrieve_in { 811 uint64_t dummy1; 812 uint64_t offset; 813 uint32_t size; 814 uint32_t dummy2; 815 uint64_t dummy3; 816 uint64_t dummy4; 817 }; 818 819 /* Device ioctls: */ 820 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t) 821 822 struct fuse_lseek_in { 823 uint64_t fh; 824 uint64_t offset; 825 uint32_t whence; 826 uint32_t padding; 827 }; 828 829 struct fuse_lseek_out { 830 uint64_t offset; 831 }; 832 833 struct fuse_copy_file_range_in { 834 uint64_t fh_in; 835 uint64_t off_in; 836 uint64_t nodeid_out; 837 uint64_t fh_out; 838 uint64_t off_out; 839 uint64_t len; 840 uint64_t flags; 841 }; 842 843 #endif /* _LINUX_FUSE_H */ 844