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 <[email protected]> 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 * - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING 137 * - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag 138 */ 139 140 #ifndef _LINUX_FUSE_H 141 #define _LINUX_FUSE_H 142 143 #ifdef __KERNEL__ 144 #include <linux/types.h> 145 #else 146 #include <stdint.h> 147 #endif 148 149 /* 150 * Version negotiation: 151 * 152 * Both the kernel and userspace send the version they support in the 153 * INIT request and reply respectively. 154 * 155 * If the major versions match then both shall use the smallest 156 * of the two minor versions for communication. 157 * 158 * If the kernel supports a larger major version, then userspace shall 159 * reply with the major version it supports, ignore the rest of the 160 * INIT message and expect a new INIT message from the kernel with a 161 * matching major version. 162 * 163 * If the library supports a larger major version, then it shall fall 164 * back to the major protocol version sent by the kernel for 165 * communication and reply with that major version (and an arbitrary 166 * supported minor version). 167 */ 168 169 /** Version number of this interface */ 170 #define FUSE_KERNEL_VERSION 7 171 172 /** Minor version number of this interface */ 173 #define FUSE_KERNEL_MINOR_VERSION 31 174 175 /** The node ID of the root inode */ 176 #define FUSE_ROOT_ID 1 177 178 /* Make sure all structures are padded to 64bit boundary, so 32bit 179 userspace works under 64bit kernels */ 180 181 struct fuse_attr { 182 uint64_t ino; 183 uint64_t size; 184 uint64_t blocks; 185 uint64_t atime; 186 uint64_t mtime; 187 uint64_t ctime; 188 uint32_t atimensec; 189 uint32_t mtimensec; 190 uint32_t ctimensec; 191 uint32_t mode; 192 uint32_t nlink; 193 uint32_t uid; 194 uint32_t gid; 195 uint32_t rdev; 196 uint32_t blksize; 197 uint32_t padding; 198 }; 199 200 struct fuse_kstatfs { 201 uint64_t blocks; 202 uint64_t bfree; 203 uint64_t bavail; 204 uint64_t files; 205 uint64_t ffree; 206 uint32_t bsize; 207 uint32_t namelen; 208 uint32_t frsize; 209 uint32_t padding; 210 uint32_t spare[6]; 211 }; 212 213 struct fuse_file_lock { 214 uint64_t start; 215 uint64_t end; 216 uint32_t type; 217 uint32_t pid; /* tgid */ 218 }; 219 220 /** 221 * Bitmasks for fuse_setattr_in.valid 222 */ 223 #define FATTR_MODE (1 << 0) 224 #define FATTR_UID (1 << 1) 225 #define FATTR_GID (1 << 2) 226 #define FATTR_SIZE (1 << 3) 227 #define FATTR_ATIME (1 << 4) 228 #define FATTR_MTIME (1 << 5) 229 #define FATTR_FH (1 << 6) 230 #define FATTR_ATIME_NOW (1 << 7) 231 #define FATTR_MTIME_NOW (1 << 8) 232 #define FATTR_LOCKOWNER (1 << 9) 233 #define FATTR_CTIME (1 << 10) 234 235 /** 236 * Flags returned by the OPEN request 237 * 238 * FOPEN_DIRECT_IO: bypass page cache for this open file 239 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 240 * FOPEN_NONSEEKABLE: the file is not seekable 241 * FOPEN_CACHE_DIR: allow caching this directory 242 * FOPEN_STREAM: the file is stream-like (no file position at all) 243 */ 244 #define FOPEN_DIRECT_IO (1 << 0) 245 #define FOPEN_KEEP_CACHE (1 << 1) 246 #define FOPEN_NONSEEKABLE (1 << 2) 247 #define FOPEN_CACHE_DIR (1 << 3) 248 #define FOPEN_STREAM (1 << 4) 249 250 /** 251 * INIT request/reply flags 252 * 253 * FUSE_ASYNC_READ: asynchronous read requests 254 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 255 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 256 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 257 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 258 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 259 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 260 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 261 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 262 * FUSE_SPLICE_READ: kernel supports splice read on the device 263 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 264 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 265 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 266 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 267 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 268 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 269 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 270 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 271 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 272 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 273 * FUSE_POSIX_ACL: filesystem supports posix acls 274 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 275 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 276 * FUSE_CACHE_SYMLINKS: cache READLINK responses 277 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir 278 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request 279 * FUSE_MAP_ALIGNMENT: map_alignment field is valid 280 */ 281 #define FUSE_ASYNC_READ (1 << 0) 282 #define FUSE_POSIX_LOCKS (1 << 1) 283 #define FUSE_FILE_OPS (1 << 2) 284 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 285 #define FUSE_EXPORT_SUPPORT (1 << 4) 286 #define FUSE_BIG_WRITES (1 << 5) 287 #define FUSE_DONT_MASK (1 << 6) 288 #define FUSE_SPLICE_WRITE (1 << 7) 289 #define FUSE_SPLICE_MOVE (1 << 8) 290 #define FUSE_SPLICE_READ (1 << 9) 291 #define FUSE_FLOCK_LOCKS (1 << 10) 292 #define FUSE_HAS_IOCTL_DIR (1 << 11) 293 #define FUSE_AUTO_INVAL_DATA (1 << 12) 294 #define FUSE_DO_READDIRPLUS (1 << 13) 295 #define FUSE_READDIRPLUS_AUTO (1 << 14) 296 #define FUSE_ASYNC_DIO (1 << 15) 297 #define FUSE_WRITEBACK_CACHE (1 << 16) 298 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 299 #define FUSE_PARALLEL_DIROPS (1 << 18) 300 #define FUSE_HANDLE_KILLPRIV (1 << 19) 301 #define FUSE_POSIX_ACL (1 << 20) 302 #define FUSE_ABORT_ERROR (1 << 21) 303 #define FUSE_MAX_PAGES (1 << 22) 304 #define FUSE_CACHE_SYMLINKS (1 << 23) 305 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24) 306 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25) 307 #define FUSE_MAP_ALIGNMENT (1 << 26) 308 309 /** 310 * CUSE INIT request/reply flags 311 * 312 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 313 */ 314 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 315 316 /** 317 * Release flags 318 */ 319 #define FUSE_RELEASE_FLUSH (1 << 0) 320 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 321 322 /** 323 * Getattr flags 324 */ 325 #define FUSE_GETATTR_FH (1 << 0) 326 327 /** 328 * Lock flags 329 */ 330 #define FUSE_LK_FLOCK (1 << 0) 331 332 /** 333 * WRITE flags 334 * 335 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 336 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 337 * FUSE_WRITE_KILL_PRIV: kill suid and sgid bits 338 */ 339 #define FUSE_WRITE_CACHE (1 << 0) 340 #define FUSE_WRITE_LOCKOWNER (1 << 1) 341 #define FUSE_WRITE_KILL_PRIV (1 << 2) 342 343 /** 344 * Read flags 345 */ 346 #define FUSE_READ_LOCKOWNER (1 << 1) 347 348 /** 349 * Ioctl flags 350 * 351 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 352 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 353 * FUSE_IOCTL_RETRY: retry with new iovecs 354 * FUSE_IOCTL_32BIT: 32bit ioctl 355 * FUSE_IOCTL_DIR: is a directory 356 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) 357 * 358 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 359 */ 360 #define FUSE_IOCTL_COMPAT (1 << 0) 361 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 362 #define FUSE_IOCTL_RETRY (1 << 2) 363 #define FUSE_IOCTL_32BIT (1 << 3) 364 #define FUSE_IOCTL_DIR (1 << 4) 365 #define FUSE_IOCTL_COMPAT_X32 (1 << 5) 366 367 #define FUSE_IOCTL_MAX_IOV 256 368 369 /** 370 * Poll flags 371 * 372 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 373 */ 374 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 375 376 /** 377 * Fsync flags 378 * 379 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata 380 */ 381 #define FUSE_FSYNC_FDATASYNC (1 << 0) 382 383 enum fuse_opcode { 384 FUSE_LOOKUP = 1, 385 FUSE_FORGET = 2, /* no reply */ 386 FUSE_GETATTR = 3, 387 FUSE_SETATTR = 4, 388 FUSE_READLINK = 5, 389 FUSE_SYMLINK = 6, 390 FUSE_MKNOD = 8, 391 FUSE_MKDIR = 9, 392 FUSE_UNLINK = 10, 393 FUSE_RMDIR = 11, 394 FUSE_RENAME = 12, 395 FUSE_LINK = 13, 396 FUSE_OPEN = 14, 397 FUSE_READ = 15, 398 FUSE_WRITE = 16, 399 FUSE_STATFS = 17, 400 FUSE_RELEASE = 18, 401 FUSE_FSYNC = 20, 402 FUSE_SETXATTR = 21, 403 FUSE_GETXATTR = 22, 404 FUSE_LISTXATTR = 23, 405 FUSE_REMOVEXATTR = 24, 406 FUSE_FLUSH = 25, 407 FUSE_INIT = 26, 408 FUSE_OPENDIR = 27, 409 FUSE_READDIR = 28, 410 FUSE_RELEASEDIR = 29, 411 FUSE_FSYNCDIR = 30, 412 FUSE_GETLK = 31, 413 FUSE_SETLK = 32, 414 FUSE_SETLKW = 33, 415 FUSE_ACCESS = 34, 416 FUSE_CREATE = 35, 417 FUSE_INTERRUPT = 36, 418 FUSE_BMAP = 37, 419 FUSE_DESTROY = 38, 420 FUSE_IOCTL = 39, 421 FUSE_POLL = 40, 422 FUSE_NOTIFY_REPLY = 41, 423 FUSE_BATCH_FORGET = 42, 424 FUSE_FALLOCATE = 43, 425 FUSE_READDIRPLUS = 44, 426 FUSE_RENAME2 = 45, 427 FUSE_LSEEK = 46, 428 FUSE_COPY_FILE_RANGE = 47, 429 FUSE_SETUPMAPPING = 48, 430 FUSE_REMOVEMAPPING = 49, 431 432 /* CUSE specific operations */ 433 CUSE_INIT = 4096, 434 435 /* Reserved opcodes: helpful to detect structure endian-ness */ 436 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */ 437 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */ 438 }; 439 440 enum fuse_notify_code { 441 FUSE_NOTIFY_POLL = 1, 442 FUSE_NOTIFY_INVAL_INODE = 2, 443 FUSE_NOTIFY_INVAL_ENTRY = 3, 444 FUSE_NOTIFY_STORE = 4, 445 FUSE_NOTIFY_RETRIEVE = 5, 446 FUSE_NOTIFY_DELETE = 6, 447 FUSE_NOTIFY_CODE_MAX, 448 }; 449 450 /* The read buffer is required to be at least 8k, but may be much larger */ 451 #define FUSE_MIN_READ_BUFFER 8192 452 453 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 454 455 struct fuse_entry_out { 456 uint64_t nodeid; /* Inode ID */ 457 uint64_t generation; /* Inode generation: nodeid:gen must 458 be unique for the fs's lifetime */ 459 uint64_t entry_valid; /* Cache timeout for the name */ 460 uint64_t attr_valid; /* Cache timeout for the attributes */ 461 uint32_t entry_valid_nsec; 462 uint32_t attr_valid_nsec; 463 struct fuse_attr attr; 464 }; 465 466 struct fuse_forget_in { 467 uint64_t nlookup; 468 }; 469 470 struct fuse_forget_one { 471 uint64_t nodeid; 472 uint64_t nlookup; 473 }; 474 475 struct fuse_batch_forget_in { 476 uint32_t count; 477 uint32_t dummy; 478 }; 479 480 struct fuse_getattr_in { 481 uint32_t getattr_flags; 482 uint32_t dummy; 483 uint64_t fh; 484 }; 485 486 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 487 488 struct fuse_attr_out { 489 uint64_t attr_valid; /* Cache timeout for the attributes */ 490 uint32_t attr_valid_nsec; 491 uint32_t dummy; 492 struct fuse_attr attr; 493 }; 494 495 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 496 497 struct fuse_mknod_in { 498 uint32_t mode; 499 uint32_t rdev; 500 uint32_t umask; 501 uint32_t padding; 502 }; 503 504 struct fuse_mkdir_in { 505 uint32_t mode; 506 uint32_t umask; 507 }; 508 509 struct fuse_rename_in { 510 uint64_t newdir; 511 }; 512 513 struct fuse_rename2_in { 514 uint64_t newdir; 515 uint32_t flags; 516 uint32_t padding; 517 }; 518 519 struct fuse_link_in { 520 uint64_t oldnodeid; 521 }; 522 523 struct fuse_setattr_in { 524 uint32_t valid; 525 uint32_t padding; 526 uint64_t fh; 527 uint64_t size; 528 uint64_t lock_owner; 529 uint64_t atime; 530 uint64_t mtime; 531 uint64_t ctime; 532 uint32_t atimensec; 533 uint32_t mtimensec; 534 uint32_t ctimensec; 535 uint32_t mode; 536 uint32_t unused4; 537 uint32_t uid; 538 uint32_t gid; 539 uint32_t unused5; 540 }; 541 542 struct fuse_open_in { 543 uint32_t flags; 544 uint32_t unused; 545 }; 546 547 struct fuse_create_in { 548 uint32_t flags; 549 uint32_t mode; 550 uint32_t umask; 551 uint32_t padding; 552 }; 553 554 struct fuse_open_out { 555 uint64_t fh; 556 uint32_t open_flags; 557 uint32_t padding; 558 }; 559 560 struct fuse_release_in { 561 uint64_t fh; 562 uint32_t flags; 563 uint32_t release_flags; 564 uint64_t lock_owner; 565 }; 566 567 struct fuse_flush_in { 568 uint64_t fh; 569 uint32_t unused; 570 uint32_t padding; 571 uint64_t lock_owner; 572 }; 573 574 struct fuse_read_in { 575 uint64_t fh; 576 uint64_t offset; 577 uint32_t size; 578 uint32_t read_flags; 579 uint64_t lock_owner; 580 uint32_t flags; 581 uint32_t padding; 582 }; 583 584 #define FUSE_COMPAT_WRITE_IN_SIZE 24 585 586 struct fuse_write_in { 587 uint64_t fh; 588 uint64_t offset; 589 uint32_t size; 590 uint32_t write_flags; 591 uint64_t lock_owner; 592 uint32_t flags; 593 uint32_t padding; 594 }; 595 596 struct fuse_write_out { 597 uint32_t size; 598 uint32_t padding; 599 }; 600 601 #define FUSE_COMPAT_STATFS_SIZE 48 602 603 struct fuse_statfs_out { 604 struct fuse_kstatfs st; 605 }; 606 607 struct fuse_fsync_in { 608 uint64_t fh; 609 uint32_t fsync_flags; 610 uint32_t padding; 611 }; 612 613 struct fuse_setxattr_in { 614 uint32_t size; 615 uint32_t flags; 616 }; 617 618 struct fuse_getxattr_in { 619 uint32_t size; 620 uint32_t padding; 621 }; 622 623 struct fuse_getxattr_out { 624 uint32_t size; 625 uint32_t padding; 626 }; 627 628 struct fuse_lk_in { 629 uint64_t fh; 630 uint64_t owner; 631 struct fuse_file_lock lk; 632 uint32_t lk_flags; 633 uint32_t padding; 634 }; 635 636 struct fuse_lk_out { 637 struct fuse_file_lock lk; 638 }; 639 640 struct fuse_access_in { 641 uint32_t mask; 642 uint32_t padding; 643 }; 644 645 struct fuse_init_in { 646 uint32_t major; 647 uint32_t minor; 648 uint32_t max_readahead; 649 uint32_t flags; 650 }; 651 652 #define FUSE_COMPAT_INIT_OUT_SIZE 8 653 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 654 655 struct fuse_init_out { 656 uint32_t major; 657 uint32_t minor; 658 uint32_t max_readahead; 659 uint32_t flags; 660 uint16_t max_background; 661 uint16_t congestion_threshold; 662 uint32_t max_write; 663 uint32_t time_gran; 664 uint16_t max_pages; 665 uint16_t map_alignment; 666 uint32_t unused[8]; 667 }; 668 669 #define CUSE_INIT_INFO_MAX 4096 670 671 struct cuse_init_in { 672 uint32_t major; 673 uint32_t minor; 674 uint32_t unused; 675 uint32_t flags; 676 }; 677 678 struct cuse_init_out { 679 uint32_t major; 680 uint32_t minor; 681 uint32_t unused; 682 uint32_t flags; 683 uint32_t max_read; 684 uint32_t max_write; 685 uint32_t dev_major; /* chardev major */ 686 uint32_t dev_minor; /* chardev minor */ 687 uint32_t spare[10]; 688 }; 689 690 struct fuse_interrupt_in { 691 uint64_t unique; 692 }; 693 694 struct fuse_bmap_in { 695 uint64_t block; 696 uint32_t blocksize; 697 uint32_t padding; 698 }; 699 700 struct fuse_bmap_out { 701 uint64_t block; 702 }; 703 704 struct fuse_ioctl_in { 705 uint64_t fh; 706 uint32_t flags; 707 uint32_t cmd; 708 uint64_t arg; 709 uint32_t in_size; 710 uint32_t out_size; 711 }; 712 713 struct fuse_ioctl_iovec { 714 uint64_t base; 715 uint64_t len; 716 }; 717 718 struct fuse_ioctl_out { 719 int32_t result; 720 uint32_t flags; 721 uint32_t in_iovs; 722 uint32_t out_iovs; 723 }; 724 725 struct fuse_poll_in { 726 uint64_t fh; 727 uint64_t kh; 728 uint32_t flags; 729 uint32_t events; 730 }; 731 732 struct fuse_poll_out { 733 uint32_t revents; 734 uint32_t padding; 735 }; 736 737 struct fuse_notify_poll_wakeup_out { 738 uint64_t kh; 739 }; 740 741 struct fuse_fallocate_in { 742 uint64_t fh; 743 uint64_t offset; 744 uint64_t length; 745 uint32_t mode; 746 uint32_t padding; 747 }; 748 749 struct fuse_in_header { 750 uint32_t len; 751 uint32_t opcode; 752 uint64_t unique; 753 uint64_t nodeid; 754 uint32_t uid; 755 uint32_t gid; 756 uint32_t pid; 757 uint32_t padding; 758 }; 759 760 struct fuse_out_header { 761 uint32_t len; 762 int32_t error; 763 uint64_t unique; 764 }; 765 766 struct fuse_dirent { 767 uint64_t ino; 768 uint64_t off; 769 uint32_t namelen; 770 uint32_t type; 771 char name[]; 772 }; 773 774 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 775 #define FUSE_DIRENT_ALIGN(x) \ 776 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 777 #define FUSE_DIRENT_SIZE(d) \ 778 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 779 780 struct fuse_direntplus { 781 struct fuse_entry_out entry_out; 782 struct fuse_dirent dirent; 783 }; 784 785 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 786 offsetof(struct fuse_direntplus, dirent.name) 787 #define FUSE_DIRENTPLUS_SIZE(d) \ 788 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 789 790 struct fuse_notify_inval_inode_out { 791 uint64_t ino; 792 int64_t off; 793 int64_t len; 794 }; 795 796 struct fuse_notify_inval_entry_out { 797 uint64_t parent; 798 uint32_t namelen; 799 uint32_t padding; 800 }; 801 802 struct fuse_notify_delete_out { 803 uint64_t parent; 804 uint64_t child; 805 uint32_t namelen; 806 uint32_t padding; 807 }; 808 809 struct fuse_notify_store_out { 810 uint64_t nodeid; 811 uint64_t offset; 812 uint32_t size; 813 uint32_t padding; 814 }; 815 816 struct fuse_notify_retrieve_out { 817 uint64_t notify_unique; 818 uint64_t nodeid; 819 uint64_t offset; 820 uint32_t size; 821 uint32_t padding; 822 }; 823 824 /* Matches the size of fuse_write_in */ 825 struct fuse_notify_retrieve_in { 826 uint64_t dummy1; 827 uint64_t offset; 828 uint32_t size; 829 uint32_t dummy2; 830 uint64_t dummy3; 831 uint64_t dummy4; 832 }; 833 834 /* Device ioctls: */ 835 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t) 836 837 struct fuse_lseek_in { 838 uint64_t fh; 839 uint64_t offset; 840 uint32_t whence; 841 uint32_t padding; 842 }; 843 844 struct fuse_lseek_out { 845 uint64_t offset; 846 }; 847 848 struct fuse_copy_file_range_in { 849 uint64_t fh_in; 850 uint64_t off_in; 851 uint64_t nodeid_out; 852 uint64_t fh_out; 853 uint64_t off_out; 854 uint64_t len; 855 uint64_t flags; 856 }; 857 858 #endif /* _LINUX_FUSE_H */ 859