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 * FOPEN_STREAM: the file is stream-like (no file position at all) 223 */ 224 #define FOPEN_DIRECT_IO (1 << 0) 225 #define FOPEN_KEEP_CACHE (1 << 1) 226 #define FOPEN_NONSEEKABLE (1 << 2) 227 #define FOPEN_STREAM (1 << 4) 228 229 /** 230 * INIT request/reply flags 231 * 232 * FUSE_ASYNC_READ: asynchronous read requests 233 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 234 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 235 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 236 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 237 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 238 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 239 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 240 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 241 * FUSE_SPLICE_READ: kernel supports splice read on the device 242 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 243 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 244 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 245 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 246 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 247 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 248 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 249 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 250 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 251 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 252 * FUSE_POSIX_ACL: filesystem supports posix acls 253 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 254 */ 255 #define FUSE_ASYNC_READ (1 << 0) 256 #define FUSE_POSIX_LOCKS (1 << 1) 257 #define FUSE_FILE_OPS (1 << 2) 258 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 259 #define FUSE_EXPORT_SUPPORT (1 << 4) 260 #define FUSE_BIG_WRITES (1 << 5) 261 #define FUSE_DONT_MASK (1 << 6) 262 #define FUSE_SPLICE_WRITE (1 << 7) 263 #define FUSE_SPLICE_MOVE (1 << 8) 264 #define FUSE_SPLICE_READ (1 << 9) 265 #define FUSE_FLOCK_LOCKS (1 << 10) 266 #define FUSE_HAS_IOCTL_DIR (1 << 11) 267 #define FUSE_AUTO_INVAL_DATA (1 << 12) 268 #define FUSE_DO_READDIRPLUS (1 << 13) 269 #define FUSE_READDIRPLUS_AUTO (1 << 14) 270 #define FUSE_ASYNC_DIO (1 << 15) 271 #define FUSE_WRITEBACK_CACHE (1 << 16) 272 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 273 #define FUSE_PARALLEL_DIROPS (1 << 18) 274 #define FUSE_HANDLE_KILLPRIV (1 << 19) 275 #define FUSE_POSIX_ACL (1 << 20) 276 #define FUSE_ABORT_ERROR (1 << 21) 277 278 /** 279 * CUSE INIT request/reply flags 280 * 281 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 282 */ 283 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 284 285 /** 286 * Release flags 287 */ 288 #define FUSE_RELEASE_FLUSH (1 << 0) 289 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 290 291 /** 292 * Getattr flags 293 */ 294 #define FUSE_GETATTR_FH (1 << 0) 295 296 /** 297 * Lock flags 298 */ 299 #define FUSE_LK_FLOCK (1 << 0) 300 301 /** 302 * WRITE flags 303 * 304 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 305 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 306 */ 307 #define FUSE_WRITE_CACHE (1 << 0) 308 #define FUSE_WRITE_LOCKOWNER (1 << 1) 309 310 /** 311 * Read flags 312 */ 313 #define FUSE_READ_LOCKOWNER (1 << 1) 314 315 /** 316 * Ioctl flags 317 * 318 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 319 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 320 * FUSE_IOCTL_RETRY: retry with new iovecs 321 * FUSE_IOCTL_32BIT: 32bit ioctl 322 * FUSE_IOCTL_DIR: is a directory 323 * 324 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 325 */ 326 #define FUSE_IOCTL_COMPAT (1 << 0) 327 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 328 #define FUSE_IOCTL_RETRY (1 << 2) 329 #define FUSE_IOCTL_32BIT (1 << 3) 330 #define FUSE_IOCTL_DIR (1 << 4) 331 332 #define FUSE_IOCTL_MAX_IOV 256 333 334 /** 335 * Poll flags 336 * 337 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 338 */ 339 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 340 341 enum fuse_opcode { 342 FUSE_LOOKUP = 1, 343 FUSE_FORGET = 2, /* no reply */ 344 FUSE_GETATTR = 3, 345 FUSE_SETATTR = 4, 346 FUSE_READLINK = 5, 347 FUSE_SYMLINK = 6, 348 FUSE_MKNOD = 8, 349 FUSE_MKDIR = 9, 350 FUSE_UNLINK = 10, 351 FUSE_RMDIR = 11, 352 FUSE_RENAME = 12, 353 FUSE_LINK = 13, 354 FUSE_OPEN = 14, 355 FUSE_READ = 15, 356 FUSE_WRITE = 16, 357 FUSE_STATFS = 17, 358 FUSE_RELEASE = 18, 359 FUSE_FSYNC = 20, 360 FUSE_SETXATTR = 21, 361 FUSE_GETXATTR = 22, 362 FUSE_LISTXATTR = 23, 363 FUSE_REMOVEXATTR = 24, 364 FUSE_FLUSH = 25, 365 FUSE_INIT = 26, 366 FUSE_OPENDIR = 27, 367 FUSE_READDIR = 28, 368 FUSE_RELEASEDIR = 29, 369 FUSE_FSYNCDIR = 30, 370 FUSE_GETLK = 31, 371 FUSE_SETLK = 32, 372 FUSE_SETLKW = 33, 373 FUSE_ACCESS = 34, 374 FUSE_CREATE = 35, 375 FUSE_INTERRUPT = 36, 376 FUSE_BMAP = 37, 377 FUSE_DESTROY = 38, 378 FUSE_IOCTL = 39, 379 FUSE_POLL = 40, 380 FUSE_NOTIFY_REPLY = 41, 381 FUSE_BATCH_FORGET = 42, 382 FUSE_FALLOCATE = 43, 383 FUSE_READDIRPLUS = 44, 384 FUSE_RENAME2 = 45, 385 FUSE_LSEEK = 46, 386 387 /* CUSE specific operations */ 388 CUSE_INIT = 4096, 389 }; 390 391 enum fuse_notify_code { 392 FUSE_NOTIFY_POLL = 1, 393 FUSE_NOTIFY_INVAL_INODE = 2, 394 FUSE_NOTIFY_INVAL_ENTRY = 3, 395 FUSE_NOTIFY_STORE = 4, 396 FUSE_NOTIFY_RETRIEVE = 5, 397 FUSE_NOTIFY_DELETE = 6, 398 FUSE_NOTIFY_CODE_MAX, 399 }; 400 401 /* The read buffer is required to be at least 8k, but may be much larger */ 402 #define FUSE_MIN_READ_BUFFER 8192 403 404 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 405 406 struct fuse_entry_out { 407 uint64_t nodeid; /* Inode ID */ 408 uint64_t generation; /* Inode generation: nodeid:gen must 409 be unique for the fs's lifetime */ 410 uint64_t entry_valid; /* Cache timeout for the name */ 411 uint64_t attr_valid; /* Cache timeout for the attributes */ 412 uint32_t entry_valid_nsec; 413 uint32_t attr_valid_nsec; 414 struct fuse_attr attr; 415 }; 416 417 struct fuse_forget_in { 418 uint64_t nlookup; 419 }; 420 421 struct fuse_forget_one { 422 uint64_t nodeid; 423 uint64_t nlookup; 424 }; 425 426 struct fuse_batch_forget_in { 427 uint32_t count; 428 uint32_t dummy; 429 }; 430 431 struct fuse_getattr_in { 432 uint32_t getattr_flags; 433 uint32_t dummy; 434 uint64_t fh; 435 }; 436 437 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 438 439 struct fuse_attr_out { 440 uint64_t attr_valid; /* Cache timeout for the attributes */ 441 uint32_t attr_valid_nsec; 442 uint32_t dummy; 443 struct fuse_attr attr; 444 }; 445 446 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 447 448 struct fuse_mknod_in { 449 uint32_t mode; 450 uint32_t rdev; 451 uint32_t umask; 452 uint32_t padding; 453 }; 454 455 struct fuse_mkdir_in { 456 uint32_t mode; 457 uint32_t umask; 458 }; 459 460 struct fuse_rename_in { 461 uint64_t newdir; 462 }; 463 464 struct fuse_rename2_in { 465 uint64_t newdir; 466 uint32_t flags; 467 uint32_t padding; 468 }; 469 470 struct fuse_link_in { 471 uint64_t oldnodeid; 472 }; 473 474 struct fuse_setattr_in { 475 uint32_t valid; 476 uint32_t padding; 477 uint64_t fh; 478 uint64_t size; 479 uint64_t lock_owner; 480 uint64_t atime; 481 uint64_t mtime; 482 uint64_t ctime; 483 uint32_t atimensec; 484 uint32_t mtimensec; 485 uint32_t ctimensec; 486 uint32_t mode; 487 uint32_t unused4; 488 uint32_t uid; 489 uint32_t gid; 490 uint32_t unused5; 491 }; 492 493 struct fuse_open_in { 494 uint32_t flags; 495 uint32_t unused; 496 }; 497 498 struct fuse_create_in { 499 uint32_t flags; 500 uint32_t mode; 501 uint32_t umask; 502 uint32_t padding; 503 }; 504 505 struct fuse_open_out { 506 uint64_t fh; 507 uint32_t open_flags; 508 uint32_t padding; 509 }; 510 511 struct fuse_release_in { 512 uint64_t fh; 513 uint32_t flags; 514 uint32_t release_flags; 515 uint64_t lock_owner; 516 }; 517 518 struct fuse_flush_in { 519 uint64_t fh; 520 uint32_t unused; 521 uint32_t padding; 522 uint64_t lock_owner; 523 }; 524 525 struct fuse_read_in { 526 uint64_t fh; 527 uint64_t offset; 528 uint32_t size; 529 uint32_t read_flags; 530 uint64_t lock_owner; 531 uint32_t flags; 532 uint32_t padding; 533 }; 534 535 #define FUSE_COMPAT_WRITE_IN_SIZE 24 536 537 struct fuse_write_in { 538 uint64_t fh; 539 uint64_t offset; 540 uint32_t size; 541 uint32_t write_flags; 542 uint64_t lock_owner; 543 uint32_t flags; 544 uint32_t padding; 545 }; 546 547 struct fuse_write_out { 548 uint32_t size; 549 uint32_t padding; 550 }; 551 552 #define FUSE_COMPAT_STATFS_SIZE 48 553 554 struct fuse_statfs_out { 555 struct fuse_kstatfs st; 556 }; 557 558 struct fuse_fsync_in { 559 uint64_t fh; 560 uint32_t fsync_flags; 561 uint32_t padding; 562 }; 563 564 struct fuse_setxattr_in { 565 uint32_t size; 566 uint32_t flags; 567 }; 568 569 struct fuse_getxattr_in { 570 uint32_t size; 571 uint32_t padding; 572 }; 573 574 struct fuse_getxattr_out { 575 uint32_t size; 576 uint32_t padding; 577 }; 578 579 struct fuse_lk_in { 580 uint64_t fh; 581 uint64_t owner; 582 struct fuse_file_lock lk; 583 uint32_t lk_flags; 584 uint32_t padding; 585 }; 586 587 struct fuse_lk_out { 588 struct fuse_file_lock lk; 589 }; 590 591 struct fuse_access_in { 592 uint32_t mask; 593 uint32_t padding; 594 }; 595 596 struct fuse_init_in { 597 uint32_t major; 598 uint32_t minor; 599 uint32_t max_readahead; 600 uint32_t flags; 601 }; 602 603 #define FUSE_COMPAT_INIT_OUT_SIZE 8 604 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 605 606 struct fuse_init_out { 607 uint32_t major; 608 uint32_t minor; 609 uint32_t max_readahead; 610 uint32_t flags; 611 uint16_t max_background; 612 uint16_t congestion_threshold; 613 uint32_t max_write; 614 uint32_t time_gran; 615 uint32_t unused[9]; 616 }; 617 618 #define CUSE_INIT_INFO_MAX 4096 619 620 struct cuse_init_in { 621 uint32_t major; 622 uint32_t minor; 623 uint32_t unused; 624 uint32_t flags; 625 }; 626 627 struct cuse_init_out { 628 uint32_t major; 629 uint32_t minor; 630 uint32_t unused; 631 uint32_t flags; 632 uint32_t max_read; 633 uint32_t max_write; 634 uint32_t dev_major; /* chardev major */ 635 uint32_t dev_minor; /* chardev minor */ 636 uint32_t spare[10]; 637 }; 638 639 struct fuse_interrupt_in { 640 uint64_t unique; 641 }; 642 643 struct fuse_bmap_in { 644 uint64_t block; 645 uint32_t blocksize; 646 uint32_t padding; 647 }; 648 649 struct fuse_bmap_out { 650 uint64_t block; 651 }; 652 653 struct fuse_ioctl_in { 654 uint64_t fh; 655 uint32_t flags; 656 uint32_t cmd; 657 uint64_t arg; 658 uint32_t in_size; 659 uint32_t out_size; 660 }; 661 662 struct fuse_ioctl_iovec { 663 uint64_t base; 664 uint64_t len; 665 }; 666 667 struct fuse_ioctl_out { 668 int32_t result; 669 uint32_t flags; 670 uint32_t in_iovs; 671 uint32_t out_iovs; 672 }; 673 674 struct fuse_poll_in { 675 uint64_t fh; 676 uint64_t kh; 677 uint32_t flags; 678 uint32_t events; 679 }; 680 681 struct fuse_poll_out { 682 uint32_t revents; 683 uint32_t padding; 684 }; 685 686 struct fuse_notify_poll_wakeup_out { 687 uint64_t kh; 688 }; 689 690 struct fuse_fallocate_in { 691 uint64_t fh; 692 uint64_t offset; 693 uint64_t length; 694 uint32_t mode; 695 uint32_t padding; 696 }; 697 698 struct fuse_in_header { 699 uint32_t len; 700 uint32_t opcode; 701 uint64_t unique; 702 uint64_t nodeid; 703 uint32_t uid; 704 uint32_t gid; 705 uint32_t pid; 706 uint32_t padding; 707 }; 708 709 struct fuse_out_header { 710 uint32_t len; 711 int32_t error; 712 uint64_t unique; 713 }; 714 715 struct fuse_dirent { 716 uint64_t ino; 717 uint64_t off; 718 uint32_t namelen; 719 uint32_t type; 720 char name[]; 721 }; 722 723 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 724 #define FUSE_DIRENT_ALIGN(x) \ 725 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 726 #define FUSE_DIRENT_SIZE(d) \ 727 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 728 729 struct fuse_direntplus { 730 struct fuse_entry_out entry_out; 731 struct fuse_dirent dirent; 732 }; 733 734 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 735 offsetof(struct fuse_direntplus, dirent.name) 736 #define FUSE_DIRENTPLUS_SIZE(d) \ 737 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 738 739 struct fuse_notify_inval_inode_out { 740 uint64_t ino; 741 int64_t off; 742 int64_t len; 743 }; 744 745 struct fuse_notify_inval_entry_out { 746 uint64_t parent; 747 uint32_t namelen; 748 uint32_t padding; 749 }; 750 751 struct fuse_notify_delete_out { 752 uint64_t parent; 753 uint64_t child; 754 uint32_t namelen; 755 uint32_t padding; 756 }; 757 758 struct fuse_notify_store_out { 759 uint64_t nodeid; 760 uint64_t offset; 761 uint32_t size; 762 uint32_t padding; 763 }; 764 765 struct fuse_notify_retrieve_out { 766 uint64_t notify_unique; 767 uint64_t nodeid; 768 uint64_t offset; 769 uint32_t size; 770 uint32_t padding; 771 }; 772 773 /* Matches the size of fuse_write_in */ 774 struct fuse_notify_retrieve_in { 775 uint64_t dummy1; 776 uint64_t offset; 777 uint32_t size; 778 uint32_t dummy2; 779 uint64_t dummy3; 780 uint64_t dummy4; 781 }; 782 783 /* Device ioctls: */ 784 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t) 785 786 struct fuse_lseek_in { 787 uint64_t fh; 788 uint64_t offset; 789 uint32_t whence; 790 uint32_t padding; 791 }; 792 793 struct fuse_lseek_out { 794 uint64_t offset; 795 }; 796 797 #endif /* _LINUX_FUSE_H */ 798