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