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