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