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 * - 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 * 7.31 135 * - add FUSE_WRITE_KILL_PRIV flag 136 */ 137 138 #ifndef _LINUX_FUSE_H 139 #define _LINUX_FUSE_H 140 141 #ifdef __KERNEL__ 142 #include <linux/types.h> 143 #else 144 #include <stdint.h> 145 #endif 146 147 /* 148 * Version negotiation: 149 * 150 * Both the kernel and userspace send the version they support in the 151 * INIT request and reply respectively. 152 * 153 * If the major versions match then both shall use the smallest 154 * of the two minor versions for communication. 155 * 156 * If the kernel supports a larger major version, then userspace shall 157 * reply with the major version it supports, ignore the rest of the 158 * INIT message and expect a new INIT message from the kernel with a 159 * matching major version. 160 * 161 * If the library supports a larger major version, then it shall fall 162 * back to the major protocol version sent by the kernel for 163 * communication and reply with that major version (and an arbitrary 164 * supported minor version). 165 */ 166 167 /** Version number of this interface */ 168 #define FUSE_KERNEL_VERSION 7 169 170 /** Minor version number of this interface */ 171 #define FUSE_KERNEL_MINOR_VERSION 31 172 173 /** The node ID of the root inode */ 174 #define FUSE_ROOT_ID 1 175 176 /* Make sure all structures are padded to 64bit boundary, so 32bit 177 userspace works under 64bit kernels */ 178 179 struct fuse_attr { 180 uint64_t ino; 181 uint64_t size; 182 uint64_t blocks; 183 uint64_t atime; 184 uint64_t mtime; 185 uint64_t ctime; 186 uint32_t atimensec; 187 uint32_t mtimensec; 188 uint32_t ctimensec; 189 uint32_t mode; 190 uint32_t nlink; 191 uint32_t uid; 192 uint32_t gid; 193 uint32_t rdev; 194 uint32_t blksize; 195 uint32_t padding; 196 }; 197 198 struct fuse_kstatfs { 199 uint64_t blocks; 200 uint64_t bfree; 201 uint64_t bavail; 202 uint64_t files; 203 uint64_t ffree; 204 uint32_t bsize; 205 uint32_t namelen; 206 uint32_t frsize; 207 uint32_t padding; 208 uint32_t spare[6]; 209 }; 210 211 struct fuse_file_lock { 212 uint64_t start; 213 uint64_t end; 214 uint32_t type; 215 uint32_t pid; /* tgid */ 216 }; 217 218 /** 219 * Bitmasks for fuse_setattr_in.valid 220 */ 221 #define FATTR_MODE (1 << 0) 222 #define FATTR_UID (1 << 1) 223 #define FATTR_GID (1 << 2) 224 #define FATTR_SIZE (1 << 3) 225 #define FATTR_ATIME (1 << 4) 226 #define FATTR_MTIME (1 << 5) 227 #define FATTR_FH (1 << 6) 228 #define FATTR_ATIME_NOW (1 << 7) 229 #define FATTR_MTIME_NOW (1 << 8) 230 #define FATTR_LOCKOWNER (1 << 9) 231 #define FATTR_CTIME (1 << 10) 232 233 /** 234 * Flags returned by the OPEN request 235 * 236 * FOPEN_DIRECT_IO: bypass page cache for this open file 237 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 238 * FOPEN_NONSEEKABLE: the file is not seekable 239 * FOPEN_CACHE_DIR: allow caching this directory 240 * FOPEN_STREAM: the file is stream-like (no file position at all) 241 */ 242 #define FOPEN_DIRECT_IO (1 << 0) 243 #define FOPEN_KEEP_CACHE (1 << 1) 244 #define FOPEN_NONSEEKABLE (1 << 2) 245 #define FOPEN_CACHE_DIR (1 << 3) 246 #define FOPEN_STREAM (1 << 4) 247 248 /** 249 * INIT request/reply flags 250 * 251 * FUSE_ASYNC_READ: asynchronous read requests 252 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 253 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 254 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 255 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 256 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 257 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 258 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 259 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 260 * FUSE_SPLICE_READ: kernel supports splice read on the device 261 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 262 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 263 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 264 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 265 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 266 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 267 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 268 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 269 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 270 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 271 * FUSE_POSIX_ACL: filesystem supports posix acls 272 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 273 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 274 * FUSE_CACHE_SYMLINKS: cache READLINK responses 275 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir 276 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request 277 */ 278 #define FUSE_ASYNC_READ (1 << 0) 279 #define FUSE_POSIX_LOCKS (1 << 1) 280 #define FUSE_FILE_OPS (1 << 2) 281 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 282 #define FUSE_EXPORT_SUPPORT (1 << 4) 283 #define FUSE_BIG_WRITES (1 << 5) 284 #define FUSE_DONT_MASK (1 << 6) 285 #define FUSE_SPLICE_WRITE (1 << 7) 286 #define FUSE_SPLICE_MOVE (1 << 8) 287 #define FUSE_SPLICE_READ (1 << 9) 288 #define FUSE_FLOCK_LOCKS (1 << 10) 289 #define FUSE_HAS_IOCTL_DIR (1 << 11) 290 #define FUSE_AUTO_INVAL_DATA (1 << 12) 291 #define FUSE_DO_READDIRPLUS (1 << 13) 292 #define FUSE_READDIRPLUS_AUTO (1 << 14) 293 #define FUSE_ASYNC_DIO (1 << 15) 294 #define FUSE_WRITEBACK_CACHE (1 << 16) 295 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 296 #define FUSE_PARALLEL_DIROPS (1 << 18) 297 #define FUSE_HANDLE_KILLPRIV (1 << 19) 298 #define FUSE_POSIX_ACL (1 << 20) 299 #define FUSE_ABORT_ERROR (1 << 21) 300 #define FUSE_MAX_PAGES (1 << 22) 301 #define FUSE_CACHE_SYMLINKS (1 << 23) 302 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24) 303 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25) 304 305 /** 306 * CUSE INIT request/reply flags 307 * 308 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 309 */ 310 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 311 312 /** 313 * Release flags 314 */ 315 #define FUSE_RELEASE_FLUSH (1 << 0) 316 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 317 318 /** 319 * Getattr flags 320 */ 321 #define FUSE_GETATTR_FH (1 << 0) 322 323 /** 324 * Lock flags 325 */ 326 #define FUSE_LK_FLOCK (1 << 0) 327 328 /** 329 * WRITE flags 330 * 331 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 332 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 333 * FUSE_WRITE_KILL_PRIV: kill suid and sgid bits 334 */ 335 #define FUSE_WRITE_CACHE (1 << 0) 336 #define FUSE_WRITE_LOCKOWNER (1 << 1) 337 #define FUSE_WRITE_KILL_PRIV (1 << 2) 338 339 /** 340 * Read flags 341 */ 342 #define FUSE_READ_LOCKOWNER (1 << 1) 343 344 /** 345 * Ioctl flags 346 * 347 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 348 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 349 * FUSE_IOCTL_RETRY: retry with new iovecs 350 * FUSE_IOCTL_32BIT: 32bit ioctl 351 * FUSE_IOCTL_DIR: is a directory 352 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) 353 * 354 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 355 */ 356 #define FUSE_IOCTL_COMPAT (1 << 0) 357 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 358 #define FUSE_IOCTL_RETRY (1 << 2) 359 #define FUSE_IOCTL_32BIT (1 << 3) 360 #define FUSE_IOCTL_DIR (1 << 4) 361 #define FUSE_IOCTL_COMPAT_X32 (1 << 5) 362 363 #define FUSE_IOCTL_MAX_IOV 256 364 365 /** 366 * Poll flags 367 * 368 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 369 */ 370 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 371 372 /** 373 * Fsync flags 374 * 375 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata 376 */ 377 #define FUSE_FSYNC_FDATASYNC (1 << 0) 378 379 enum fuse_opcode { 380 FUSE_LOOKUP = 1, 381 FUSE_FORGET = 2, /* no reply */ 382 FUSE_GETATTR = 3, 383 FUSE_SETATTR = 4, 384 FUSE_READLINK = 5, 385 FUSE_SYMLINK = 6, 386 FUSE_MKNOD = 8, 387 FUSE_MKDIR = 9, 388 FUSE_UNLINK = 10, 389 FUSE_RMDIR = 11, 390 FUSE_RENAME = 12, 391 FUSE_LINK = 13, 392 FUSE_OPEN = 14, 393 FUSE_READ = 15, 394 FUSE_WRITE = 16, 395 FUSE_STATFS = 17, 396 FUSE_RELEASE = 18, 397 FUSE_FSYNC = 20, 398 FUSE_SETXATTR = 21, 399 FUSE_GETXATTR = 22, 400 FUSE_LISTXATTR = 23, 401 FUSE_REMOVEXATTR = 24, 402 FUSE_FLUSH = 25, 403 FUSE_INIT = 26, 404 FUSE_OPENDIR = 27, 405 FUSE_READDIR = 28, 406 FUSE_RELEASEDIR = 29, 407 FUSE_FSYNCDIR = 30, 408 FUSE_GETLK = 31, 409 FUSE_SETLK = 32, 410 FUSE_SETLKW = 33, 411 FUSE_ACCESS = 34, 412 FUSE_CREATE = 35, 413 FUSE_INTERRUPT = 36, 414 FUSE_BMAP = 37, 415 FUSE_DESTROY = 38, 416 FUSE_IOCTL = 39, 417 FUSE_POLL = 40, 418 FUSE_NOTIFY_REPLY = 41, 419 FUSE_BATCH_FORGET = 42, 420 FUSE_FALLOCATE = 43, 421 FUSE_READDIRPLUS = 44, 422 FUSE_RENAME2 = 45, 423 FUSE_LSEEK = 46, 424 FUSE_COPY_FILE_RANGE = 47, 425 426 /* CUSE specific operations */ 427 CUSE_INIT = 4096, 428 429 /* Android specific operations */ 430 FUSE_CANONICAL_PATH = 2016, 431 }; 432 433 enum fuse_notify_code { 434 FUSE_NOTIFY_POLL = 1, 435 FUSE_NOTIFY_INVAL_INODE = 2, 436 FUSE_NOTIFY_INVAL_ENTRY = 3, 437 FUSE_NOTIFY_STORE = 4, 438 FUSE_NOTIFY_RETRIEVE = 5, 439 FUSE_NOTIFY_DELETE = 6, 440 FUSE_NOTIFY_CODE_MAX, 441 }; 442 443 /* The read buffer is required to be at least 8k, but may be much larger */ 444 #define FUSE_MIN_READ_BUFFER 8192 445 446 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 447 448 struct fuse_entry_out { 449 uint64_t nodeid; /* Inode ID */ 450 uint64_t generation; /* Inode generation: nodeid:gen must 451 be unique for the fs's lifetime */ 452 uint64_t entry_valid; /* Cache timeout for the name */ 453 uint64_t attr_valid; /* Cache timeout for the attributes */ 454 uint32_t entry_valid_nsec; 455 uint32_t attr_valid_nsec; 456 struct fuse_attr attr; 457 }; 458 459 struct fuse_forget_in { 460 uint64_t nlookup; 461 }; 462 463 struct fuse_forget_one { 464 uint64_t nodeid; 465 uint64_t nlookup; 466 }; 467 468 struct fuse_batch_forget_in { 469 uint32_t count; 470 uint32_t dummy; 471 }; 472 473 struct fuse_getattr_in { 474 uint32_t getattr_flags; 475 uint32_t dummy; 476 uint64_t fh; 477 }; 478 479 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 480 481 struct fuse_attr_out { 482 uint64_t attr_valid; /* Cache timeout for the attributes */ 483 uint32_t attr_valid_nsec; 484 uint32_t dummy; 485 struct fuse_attr attr; 486 }; 487 488 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 489 490 struct fuse_mknod_in { 491 uint32_t mode; 492 uint32_t rdev; 493 uint32_t umask; 494 uint32_t padding; 495 }; 496 497 struct fuse_mkdir_in { 498 uint32_t mode; 499 uint32_t umask; 500 }; 501 502 struct fuse_rename_in { 503 uint64_t newdir; 504 }; 505 506 struct fuse_rename2_in { 507 uint64_t newdir; 508 uint32_t flags; 509 uint32_t padding; 510 }; 511 512 struct fuse_link_in { 513 uint64_t oldnodeid; 514 }; 515 516 struct fuse_setattr_in { 517 uint32_t valid; 518 uint32_t padding; 519 uint64_t fh; 520 uint64_t size; 521 uint64_t lock_owner; 522 uint64_t atime; 523 uint64_t mtime; 524 uint64_t ctime; 525 uint32_t atimensec; 526 uint32_t mtimensec; 527 uint32_t ctimensec; 528 uint32_t mode; 529 uint32_t unused4; 530 uint32_t uid; 531 uint32_t gid; 532 uint32_t unused5; 533 }; 534 535 struct fuse_open_in { 536 uint32_t flags; 537 uint32_t unused; 538 }; 539 540 struct fuse_create_in { 541 uint32_t flags; 542 uint32_t mode; 543 uint32_t umask; 544 uint32_t padding; 545 }; 546 547 struct fuse_open_out { 548 uint64_t fh; 549 uint32_t open_flags; 550 uint32_t padding; 551 }; 552 553 struct fuse_release_in { 554 uint64_t fh; 555 uint32_t flags; 556 uint32_t release_flags; 557 uint64_t lock_owner; 558 }; 559 560 struct fuse_flush_in { 561 uint64_t fh; 562 uint32_t unused; 563 uint32_t padding; 564 uint64_t lock_owner; 565 }; 566 567 struct fuse_read_in { 568 uint64_t fh; 569 uint64_t offset; 570 uint32_t size; 571 uint32_t read_flags; 572 uint64_t lock_owner; 573 uint32_t flags; 574 uint32_t padding; 575 }; 576 577 #define FUSE_COMPAT_WRITE_IN_SIZE 24 578 579 struct fuse_write_in { 580 uint64_t fh; 581 uint64_t offset; 582 uint32_t size; 583 uint32_t write_flags; 584 uint64_t lock_owner; 585 uint32_t flags; 586 uint32_t padding; 587 }; 588 589 struct fuse_write_out { 590 uint32_t size; 591 uint32_t padding; 592 }; 593 594 #define FUSE_COMPAT_STATFS_SIZE 48 595 596 struct fuse_statfs_out { 597 struct fuse_kstatfs st; 598 }; 599 600 struct fuse_fsync_in { 601 uint64_t fh; 602 uint32_t fsync_flags; 603 uint32_t padding; 604 }; 605 606 struct fuse_setxattr_in { 607 uint32_t size; 608 uint32_t flags; 609 }; 610 611 struct fuse_getxattr_in { 612 uint32_t size; 613 uint32_t padding; 614 }; 615 616 struct fuse_getxattr_out { 617 uint32_t size; 618 uint32_t padding; 619 }; 620 621 struct fuse_lk_in { 622 uint64_t fh; 623 uint64_t owner; 624 struct fuse_file_lock lk; 625 uint32_t lk_flags; 626 uint32_t padding; 627 }; 628 629 struct fuse_lk_out { 630 struct fuse_file_lock lk; 631 }; 632 633 struct fuse_access_in { 634 uint32_t mask; 635 uint32_t padding; 636 }; 637 638 struct fuse_init_in { 639 uint32_t major; 640 uint32_t minor; 641 uint32_t max_readahead; 642 uint32_t flags; 643 }; 644 645 #define FUSE_COMPAT_INIT_OUT_SIZE 8 646 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 647 648 struct fuse_init_out { 649 uint32_t major; 650 uint32_t minor; 651 uint32_t max_readahead; 652 uint32_t flags; 653 uint16_t max_background; 654 uint16_t congestion_threshold; 655 uint32_t max_write; 656 uint32_t time_gran; 657 uint16_t max_pages; 658 uint16_t padding; 659 uint32_t unused[8]; 660 }; 661 662 #define CUSE_INIT_INFO_MAX 4096 663 664 struct cuse_init_in { 665 uint32_t major; 666 uint32_t minor; 667 uint32_t unused; 668 uint32_t flags; 669 }; 670 671 struct cuse_init_out { 672 uint32_t major; 673 uint32_t minor; 674 uint32_t unused; 675 uint32_t flags; 676 uint32_t max_read; 677 uint32_t max_write; 678 uint32_t dev_major; /* chardev major */ 679 uint32_t dev_minor; /* chardev minor */ 680 uint32_t spare[10]; 681 }; 682 683 struct fuse_interrupt_in { 684 uint64_t unique; 685 }; 686 687 struct fuse_bmap_in { 688 uint64_t block; 689 uint32_t blocksize; 690 uint32_t padding; 691 }; 692 693 struct fuse_bmap_out { 694 uint64_t block; 695 }; 696 697 struct fuse_ioctl_in { 698 uint64_t fh; 699 uint32_t flags; 700 uint32_t cmd; 701 uint64_t arg; 702 uint32_t in_size; 703 uint32_t out_size; 704 }; 705 706 struct fuse_ioctl_iovec { 707 uint64_t base; 708 uint64_t len; 709 }; 710 711 struct fuse_ioctl_out { 712 int32_t result; 713 uint32_t flags; 714 uint32_t in_iovs; 715 uint32_t out_iovs; 716 }; 717 718 struct fuse_poll_in { 719 uint64_t fh; 720 uint64_t kh; 721 uint32_t flags; 722 uint32_t events; 723 }; 724 725 struct fuse_poll_out { 726 uint32_t revents; 727 uint32_t padding; 728 }; 729 730 struct fuse_notify_poll_wakeup_out { 731 uint64_t kh; 732 }; 733 734 struct fuse_fallocate_in { 735 uint64_t fh; 736 uint64_t offset; 737 uint64_t length; 738 uint32_t mode; 739 uint32_t padding; 740 }; 741 742 struct fuse_in_header { 743 uint32_t len; 744 uint32_t opcode; 745 uint64_t unique; 746 uint64_t nodeid; 747 uint32_t uid; 748 uint32_t gid; 749 uint32_t pid; 750 uint32_t padding; 751 }; 752 753 struct fuse_out_header { 754 uint32_t len; 755 int32_t error; 756 uint64_t unique; 757 }; 758 759 struct fuse_dirent { 760 uint64_t ino; 761 uint64_t off; 762 uint32_t namelen; 763 uint32_t type; 764 char name[]; 765 }; 766 767 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 768 #define FUSE_DIRENT_ALIGN(x) \ 769 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 770 #define FUSE_DIRENT_SIZE(d) \ 771 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 772 773 struct fuse_direntplus { 774 struct fuse_entry_out entry_out; 775 struct fuse_dirent dirent; 776 }; 777 778 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 779 offsetof(struct fuse_direntplus, dirent.name) 780 #define FUSE_DIRENTPLUS_SIZE(d) \ 781 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 782 783 struct fuse_notify_inval_inode_out { 784 uint64_t ino; 785 int64_t off; 786 int64_t len; 787 }; 788 789 struct fuse_notify_inval_entry_out { 790 uint64_t parent; 791 uint32_t namelen; 792 uint32_t padding; 793 }; 794 795 struct fuse_notify_delete_out { 796 uint64_t parent; 797 uint64_t child; 798 uint32_t namelen; 799 uint32_t padding; 800 }; 801 802 struct fuse_notify_store_out { 803 uint64_t nodeid; 804 uint64_t offset; 805 uint32_t size; 806 uint32_t padding; 807 }; 808 809 struct fuse_notify_retrieve_out { 810 uint64_t notify_unique; 811 uint64_t nodeid; 812 uint64_t offset; 813 uint32_t size; 814 uint32_t padding; 815 }; 816 817 /* Matches the size of fuse_write_in */ 818 struct fuse_notify_retrieve_in { 819 uint64_t dummy1; 820 uint64_t offset; 821 uint32_t size; 822 uint32_t dummy2; 823 uint64_t dummy3; 824 uint64_t dummy4; 825 }; 826 827 /* Device ioctls: */ 828 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t) 829 830 struct fuse_lseek_in { 831 uint64_t fh; 832 uint64_t offset; 833 uint32_t whence; 834 uint32_t padding; 835 }; 836 837 struct fuse_lseek_out { 838 uint64_t offset; 839 }; 840 841 struct fuse_copy_file_range_in { 842 uint64_t fh_in; 843 uint64_t off_in; 844 uint64_t nodeid_out; 845 uint64_t fh_out; 846 uint64_t off_out; 847 uint64_t len; 848 uint64_t flags; 849 }; 850 851 #endif /* _LINUX_FUSE_H */ 852