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 * 7.1: 42 * - add the following messages: 43 * FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK, 44 * FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE, 45 * FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR, 46 * FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR, 47 * FUSE_RELEASEDIR 48 * - add padding to messages to accommodate 32-bit servers on 64-bit kernels 49 * 50 * 7.2: 51 * - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags 52 * - add FUSE_FSYNCDIR message 53 * 54 * 7.3: 55 * - add FUSE_ACCESS message 56 * - add FUSE_CREATE message 57 * - add filehandle to fuse_setattr_in 58 * 59 * 7.4: 60 * - add frsize to fuse_kstatfs 61 * - clean up request size limit checking 62 * 63 * 7.5: 64 * - add flags and max_write to fuse_init_out 65 * 66 * 7.6: 67 * - add max_readahead to fuse_init_in and fuse_init_out 68 * 69 * 7.7: 70 * - add FUSE_INTERRUPT message 71 * - add POSIX file lock support 72 * 73 * 7.8: 74 * - add lock_owner and flags fields to fuse_release_in 75 * - add FUSE_BMAP message 76 * - add FUSE_DESTROY message 77 * 78 * 7.9: 79 * - new fuse_getattr_in input argument of GETATTR 80 * - add lk_flags in fuse_lk_in 81 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in 82 * - add blksize field to fuse_attr 83 * - add file flags field to fuse_read_in and fuse_write_in 84 * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in 85 * 86 * 7.10 87 * - add nonseekable open flag 88 * 89 * 7.11 90 * - add IOCTL message 91 * - add unsolicited notification support 92 * - add POLL message and NOTIFY_POLL notification 93 * 94 * 7.12 95 * - add umask flag to input argument of create, mknod and mkdir 96 * - add notification messages for invalidation of inodes and 97 * directory entries 98 * 99 * 7.13 100 * - make max number of background requests and congestion threshold 101 * tunables 102 * 103 * 7.14 104 * - add splice support to fuse device 105 * 106 * 7.15 107 * - add store notify 108 * - add retrieve notify 109 * 110 * 7.16 111 * - add BATCH_FORGET request 112 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct 113 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec' 114 * - add FUSE_IOCTL_32BIT flag 115 * 116 * 7.17 117 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK 118 * 119 * 7.18 120 * - add FUSE_IOCTL_DIR flag 121 * - add FUSE_NOTIFY_DELETE 122 * 123 * 7.19 124 * - add FUSE_FALLOCATE 125 * 126 * 7.20 127 * - add FUSE_AUTO_INVAL_DATA 128 * 129 * 7.21 130 * - add FUSE_READDIRPLUS 131 * - send the requested events in POLL request 132 * 133 * 7.22 134 * - add FUSE_ASYNC_DIO 135 * 136 * 7.23 137 * - add FUSE_WRITEBACK_CACHE 138 * - add time_gran to fuse_init_out 139 * - add reserved space to fuse_init_out 140 * - add FATTR_CTIME 141 * - add ctime and ctimensec to fuse_setattr_in 142 * - add FUSE_RENAME2 request 143 * - add FUSE_NO_OPEN_SUPPORT flag 144 * 145 * 7.24 146 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support 147 * 148 * 7.25 149 * - add FUSE_PARALLEL_DIROPS 150 * 151 * 7.26 152 * - add FUSE_HANDLE_KILLPRIV 153 * - add FUSE_POSIX_ACL 154 * 155 * 7.27 156 * - add FUSE_ABORT_ERROR 157 * 158 * 7.28 159 * - add FUSE_COPY_FILE_RANGE 160 * - add FOPEN_CACHE_DIR 161 * - add FUSE_MAX_PAGES, add max_pages to init_out 162 * - add FUSE_CACHE_SYMLINKS 163 * 164 * 7.29 165 * - add FUSE_NO_OPENDIR_SUPPORT flag 166 * 167 * 7.30 168 * - add FUSE_EXPLICIT_INVAL_DATA 169 * - add FUSE_IOCTL_COMPAT_X32 170 * 171 * 7.31 172 * - add FUSE_WRITE_KILL_PRIV flag 173 * - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING 174 * - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag 175 * 176 * 7.32 177 * - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS 178 * 179 * 7.33 180 * - add FUSE_HANDLE_KILLPRIV_V2, FUSE_WRITE_KILL_SUIDGID, FATTR_KILL_SUIDGID 181 * - add FUSE_OPEN_KILL_SUIDGID 182 */ 183 184 #ifndef _LINUX_FUSE_H 185 #define _LINUX_FUSE_H 186 187 #ifdef __KERNEL__ 188 #include <linux/types.h> 189 #else 190 #include <stdint.h> 191 #endif 192 193 /* 194 * Version negotiation: 195 * 196 * Both the kernel and userspace send the version they support in the 197 * INIT request and reply respectively. 198 * 199 * If the major versions match then both shall use the smallest 200 * of the two minor versions for communication. 201 * 202 * If the kernel supports a larger major version, then userspace shall 203 * reply with the major version it supports, ignore the rest of the 204 * INIT message and expect a new INIT message from the kernel with a 205 * matching major version. 206 * 207 * If the library supports a larger major version, then it shall fall 208 * back to the major protocol version sent by the kernel for 209 * communication and reply with that major version (and an arbitrary 210 * supported minor version). 211 */ 212 213 /** Version number of this interface */ 214 #define FUSE_KERNEL_VERSION 7 215 216 /** Minor version number of this interface */ 217 #define FUSE_KERNEL_MINOR_VERSION 33 218 219 /** The node ID of the root inode */ 220 #define FUSE_ROOT_ID 1 221 222 /* Make sure all structures are padded to 64bit boundary, so 32bit 223 userspace works under 64bit kernels */ 224 225 struct fuse_attr { 226 uint64_t ino; 227 uint64_t size; 228 uint64_t blocks; 229 uint64_t atime; 230 uint64_t mtime; 231 uint64_t ctime; 232 uint32_t atimensec; 233 uint32_t mtimensec; 234 uint32_t ctimensec; 235 uint32_t mode; 236 uint32_t nlink; 237 uint32_t uid; 238 uint32_t gid; 239 uint32_t rdev; 240 uint32_t blksize; 241 uint32_t flags; 242 }; 243 244 struct fuse_kstatfs { 245 uint64_t blocks; 246 uint64_t bfree; 247 uint64_t bavail; 248 uint64_t files; 249 uint64_t ffree; 250 uint32_t bsize; 251 uint32_t namelen; 252 uint32_t frsize; 253 uint32_t padding; 254 uint32_t spare[6]; 255 }; 256 257 struct fuse_file_lock { 258 uint64_t start; 259 uint64_t end; 260 uint32_t type; 261 uint32_t pid; /* tgid */ 262 }; 263 264 /** 265 * Bitmasks for fuse_setattr_in.valid 266 */ 267 #define FATTR_MODE (1 << 0) 268 #define FATTR_UID (1 << 1) 269 #define FATTR_GID (1 << 2) 270 #define FATTR_SIZE (1 << 3) 271 #define FATTR_ATIME (1 << 4) 272 #define FATTR_MTIME (1 << 5) 273 #define FATTR_FH (1 << 6) 274 #define FATTR_ATIME_NOW (1 << 7) 275 #define FATTR_MTIME_NOW (1 << 8) 276 #define FATTR_LOCKOWNER (1 << 9) 277 #define FATTR_CTIME (1 << 10) 278 #define FATTR_KILL_SUIDGID (1 << 11) 279 280 /** 281 * Flags returned by the OPEN request 282 * 283 * FOPEN_DIRECT_IO: bypass page cache for this open file 284 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 285 * FOPEN_NONSEEKABLE: the file is not seekable 286 * FOPEN_CACHE_DIR: allow caching this directory 287 * FOPEN_STREAM: the file is stream-like (no file position at all) 288 */ 289 #define FOPEN_DIRECT_IO (1 << 0) 290 #define FOPEN_KEEP_CACHE (1 << 1) 291 #define FOPEN_NONSEEKABLE (1 << 2) 292 #define FOPEN_CACHE_DIR (1 << 3) 293 #define FOPEN_STREAM (1 << 4) 294 295 /** 296 * INIT request/reply flags 297 * 298 * FUSE_ASYNC_READ: asynchronous read requests 299 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 300 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 301 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 302 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 303 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 304 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 305 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 306 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 307 * FUSE_SPLICE_READ: kernel supports splice read on the device 308 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 309 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 310 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 311 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 312 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 313 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 314 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 315 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 316 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 317 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 318 * FUSE_POSIX_ACL: filesystem supports posix acls 319 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 320 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 321 * FUSE_CACHE_SYMLINKS: cache READLINK responses 322 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir 323 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request 324 * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for 325 * foffset and moffset fields in struct 326 * fuse_setupmapping_out and fuse_removemapping_one. 327 * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts 328 * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc. 329 * Upon write/truncate suid/sgid is only killed if caller 330 * does not have CAP_FSETID. Additionally upon 331 * write/truncate sgid is killed only if file has group 332 * execute permission. (Same as Linux VFS behavior). 333 */ 334 #define FUSE_ASYNC_READ (1 << 0) 335 #define FUSE_POSIX_LOCKS (1 << 1) 336 #define FUSE_FILE_OPS (1 << 2) 337 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 338 #define FUSE_EXPORT_SUPPORT (1 << 4) 339 #define FUSE_BIG_WRITES (1 << 5) 340 #define FUSE_DONT_MASK (1 << 6) 341 #define FUSE_SPLICE_WRITE (1 << 7) 342 #define FUSE_SPLICE_MOVE (1 << 8) 343 #define FUSE_SPLICE_READ (1 << 9) 344 #define FUSE_FLOCK_LOCKS (1 << 10) 345 #define FUSE_HAS_IOCTL_DIR (1 << 11) 346 #define FUSE_AUTO_INVAL_DATA (1 << 12) 347 #define FUSE_DO_READDIRPLUS (1 << 13) 348 #define FUSE_READDIRPLUS_AUTO (1 << 14) 349 #define FUSE_ASYNC_DIO (1 << 15) 350 #define FUSE_WRITEBACK_CACHE (1 << 16) 351 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 352 #define FUSE_PARALLEL_DIROPS (1 << 18) 353 #define FUSE_HANDLE_KILLPRIV (1 << 19) 354 #define FUSE_POSIX_ACL (1 << 20) 355 #define FUSE_ABORT_ERROR (1 << 21) 356 #define FUSE_MAX_PAGES (1 << 22) 357 #define FUSE_CACHE_SYMLINKS (1 << 23) 358 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24) 359 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25) 360 #define FUSE_MAP_ALIGNMENT (1 << 26) 361 #define FUSE_SUBMOUNTS (1 << 27) 362 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28) 363 #define FUSE_PASSTHROUGH (1 << 31) 364 365 /** 366 * CUSE INIT request/reply flags 367 * 368 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 369 */ 370 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 371 372 /** 373 * Release flags 374 */ 375 #define FUSE_RELEASE_FLUSH (1 << 0) 376 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 377 378 /** 379 * Getattr flags 380 */ 381 #define FUSE_GETATTR_FH (1 << 0) 382 383 /** 384 * Lock flags 385 */ 386 #define FUSE_LK_FLOCK (1 << 0) 387 388 /** 389 * WRITE flags 390 * 391 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 392 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 393 * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits 394 */ 395 #define FUSE_WRITE_CACHE (1 << 0) 396 #define FUSE_WRITE_LOCKOWNER (1 << 1) 397 #define FUSE_WRITE_KILL_SUIDGID (1 << 2) 398 399 /* Obsolete alias; this flag implies killing suid/sgid only. */ 400 #define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID 401 402 /** 403 * Read flags 404 */ 405 #define FUSE_READ_LOCKOWNER (1 << 1) 406 407 /** 408 * Ioctl flags 409 * 410 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 411 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 412 * FUSE_IOCTL_RETRY: retry with new iovecs 413 * FUSE_IOCTL_32BIT: 32bit ioctl 414 * FUSE_IOCTL_DIR: is a directory 415 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) 416 * 417 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 418 */ 419 #define FUSE_IOCTL_COMPAT (1 << 0) 420 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 421 #define FUSE_IOCTL_RETRY (1 << 2) 422 #define FUSE_IOCTL_32BIT (1 << 3) 423 #define FUSE_IOCTL_DIR (1 << 4) 424 #define FUSE_IOCTL_COMPAT_X32 (1 << 5) 425 426 #define FUSE_IOCTL_MAX_IOV 256 427 428 /** 429 * Poll flags 430 * 431 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 432 */ 433 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 434 435 /** 436 * Fsync flags 437 * 438 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata 439 */ 440 #define FUSE_FSYNC_FDATASYNC (1 << 0) 441 442 /** 443 * fuse_attr flags 444 * 445 * FUSE_ATTR_SUBMOUNT: Object is a submount root 446 */ 447 #define FUSE_ATTR_SUBMOUNT (1 << 0) 448 449 /** 450 * Open flags 451 * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable 452 */ 453 #define FUSE_OPEN_KILL_SUIDGID (1 << 0) 454 455 enum fuse_opcode { 456 FUSE_LOOKUP = 1, 457 FUSE_FORGET = 2, /* no reply */ 458 FUSE_GETATTR = 3, 459 FUSE_SETATTR = 4, 460 FUSE_READLINK = 5, 461 FUSE_SYMLINK = 6, 462 FUSE_MKNOD = 8, 463 FUSE_MKDIR = 9, 464 FUSE_UNLINK = 10, 465 FUSE_RMDIR = 11, 466 FUSE_RENAME = 12, 467 FUSE_LINK = 13, 468 FUSE_OPEN = 14, 469 FUSE_READ = 15, 470 FUSE_WRITE = 16, 471 FUSE_STATFS = 17, 472 FUSE_RELEASE = 18, 473 FUSE_FSYNC = 20, 474 FUSE_SETXATTR = 21, 475 FUSE_GETXATTR = 22, 476 FUSE_LISTXATTR = 23, 477 FUSE_REMOVEXATTR = 24, 478 FUSE_FLUSH = 25, 479 FUSE_INIT = 26, 480 FUSE_OPENDIR = 27, 481 FUSE_READDIR = 28, 482 FUSE_RELEASEDIR = 29, 483 FUSE_FSYNCDIR = 30, 484 FUSE_GETLK = 31, 485 FUSE_SETLK = 32, 486 FUSE_SETLKW = 33, 487 FUSE_ACCESS = 34, 488 FUSE_CREATE = 35, 489 FUSE_INTERRUPT = 36, 490 FUSE_BMAP = 37, 491 FUSE_DESTROY = 38, 492 FUSE_IOCTL = 39, 493 FUSE_POLL = 40, 494 FUSE_NOTIFY_REPLY = 41, 495 FUSE_BATCH_FORGET = 42, 496 FUSE_FALLOCATE = 43, 497 FUSE_READDIRPLUS = 44, 498 FUSE_RENAME2 = 45, 499 FUSE_LSEEK = 46, 500 FUSE_COPY_FILE_RANGE = 47, 501 FUSE_SETUPMAPPING = 48, 502 FUSE_REMOVEMAPPING = 49, 503 FUSE_CANONICAL_PATH = 2016, 504 505 /* CUSE specific operations */ 506 CUSE_INIT = 4096, 507 508 /* Reserved opcodes: helpful to detect structure endian-ness */ 509 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */ 510 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */ 511 }; 512 513 enum fuse_notify_code { 514 FUSE_NOTIFY_POLL = 1, 515 FUSE_NOTIFY_INVAL_INODE = 2, 516 FUSE_NOTIFY_INVAL_ENTRY = 3, 517 FUSE_NOTIFY_STORE = 4, 518 FUSE_NOTIFY_RETRIEVE = 5, 519 FUSE_NOTIFY_DELETE = 6, 520 FUSE_NOTIFY_CODE_MAX, 521 }; 522 523 /* The read buffer is required to be at least 8k, but may be much larger */ 524 #define FUSE_MIN_READ_BUFFER 8192 525 526 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 527 528 struct fuse_entry_out { 529 uint64_t nodeid; /* Inode ID */ 530 uint64_t generation; /* Inode generation: nodeid:gen must 531 be unique for the fs's lifetime */ 532 uint64_t entry_valid; /* Cache timeout for the name */ 533 uint64_t attr_valid; /* Cache timeout for the attributes */ 534 uint32_t entry_valid_nsec; 535 uint32_t attr_valid_nsec; 536 struct fuse_attr attr; 537 }; 538 539 struct fuse_forget_in { 540 uint64_t nlookup; 541 }; 542 543 struct fuse_forget_one { 544 uint64_t nodeid; 545 uint64_t nlookup; 546 }; 547 548 struct fuse_batch_forget_in { 549 uint32_t count; 550 uint32_t dummy; 551 }; 552 553 struct fuse_getattr_in { 554 uint32_t getattr_flags; 555 uint32_t dummy; 556 uint64_t fh; 557 }; 558 559 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 560 561 struct fuse_attr_out { 562 uint64_t attr_valid; /* Cache timeout for the attributes */ 563 uint32_t attr_valid_nsec; 564 uint32_t dummy; 565 struct fuse_attr attr; 566 }; 567 568 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 569 570 struct fuse_mknod_in { 571 uint32_t mode; 572 uint32_t rdev; 573 uint32_t umask; 574 uint32_t padding; 575 }; 576 577 struct fuse_mkdir_in { 578 uint32_t mode; 579 uint32_t umask; 580 }; 581 582 struct fuse_rename_in { 583 uint64_t newdir; 584 }; 585 586 struct fuse_rename2_in { 587 uint64_t newdir; 588 uint32_t flags; 589 uint32_t padding; 590 }; 591 592 struct fuse_link_in { 593 uint64_t oldnodeid; 594 }; 595 596 struct fuse_setattr_in { 597 uint32_t valid; 598 uint32_t padding; 599 uint64_t fh; 600 uint64_t size; 601 uint64_t lock_owner; 602 uint64_t atime; 603 uint64_t mtime; 604 uint64_t ctime; 605 uint32_t atimensec; 606 uint32_t mtimensec; 607 uint32_t ctimensec; 608 uint32_t mode; 609 uint32_t unused4; 610 uint32_t uid; 611 uint32_t gid; 612 uint32_t unused5; 613 }; 614 615 struct fuse_open_in { 616 uint32_t flags; 617 uint32_t open_flags; /* FUSE_OPEN_... */ 618 }; 619 620 struct fuse_create_in { 621 uint32_t flags; 622 uint32_t mode; 623 uint32_t umask; 624 uint32_t open_flags; /* FUSE_OPEN_... */ 625 }; 626 627 struct fuse_open_out { 628 uint64_t fh; 629 uint32_t open_flags; 630 uint32_t passthrough_fh; 631 }; 632 633 struct fuse_release_in { 634 uint64_t fh; 635 uint32_t flags; 636 uint32_t release_flags; 637 uint64_t lock_owner; 638 }; 639 640 struct fuse_flush_in { 641 uint64_t fh; 642 uint32_t unused; 643 uint32_t padding; 644 uint64_t lock_owner; 645 }; 646 647 struct fuse_read_in { 648 uint64_t fh; 649 uint64_t offset; 650 uint32_t size; 651 uint32_t read_flags; 652 uint64_t lock_owner; 653 uint32_t flags; 654 uint32_t padding; 655 }; 656 657 #define FUSE_COMPAT_WRITE_IN_SIZE 24 658 659 struct fuse_write_in { 660 uint64_t fh; 661 uint64_t offset; 662 uint32_t size; 663 uint32_t write_flags; 664 uint64_t lock_owner; 665 uint32_t flags; 666 uint32_t padding; 667 }; 668 669 struct fuse_write_out { 670 uint32_t size; 671 uint32_t padding; 672 }; 673 674 #define FUSE_COMPAT_STATFS_SIZE 48 675 676 struct fuse_statfs_out { 677 struct fuse_kstatfs st; 678 }; 679 680 struct fuse_fsync_in { 681 uint64_t fh; 682 uint32_t fsync_flags; 683 uint32_t padding; 684 }; 685 686 struct fuse_setxattr_in { 687 uint32_t size; 688 uint32_t flags; 689 }; 690 691 struct fuse_getxattr_in { 692 uint32_t size; 693 uint32_t padding; 694 }; 695 696 struct fuse_getxattr_out { 697 uint32_t size; 698 uint32_t padding; 699 }; 700 701 struct fuse_lk_in { 702 uint64_t fh; 703 uint64_t owner; 704 struct fuse_file_lock lk; 705 uint32_t lk_flags; 706 uint32_t padding; 707 }; 708 709 struct fuse_lk_out { 710 struct fuse_file_lock lk; 711 }; 712 713 struct fuse_access_in { 714 uint32_t mask; 715 uint32_t padding; 716 }; 717 718 struct fuse_init_in { 719 uint32_t major; 720 uint32_t minor; 721 uint32_t max_readahead; 722 uint32_t flags; 723 }; 724 725 #define FUSE_COMPAT_INIT_OUT_SIZE 8 726 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 727 728 struct fuse_init_out { 729 uint32_t major; 730 uint32_t minor; 731 uint32_t max_readahead; 732 uint32_t flags; 733 uint16_t max_background; 734 uint16_t congestion_threshold; 735 uint32_t max_write; 736 uint32_t time_gran; 737 uint16_t max_pages; 738 uint16_t map_alignment; 739 uint32_t unused[8]; 740 }; 741 742 #define CUSE_INIT_INFO_MAX 4096 743 744 struct cuse_init_in { 745 uint32_t major; 746 uint32_t minor; 747 uint32_t unused; 748 uint32_t flags; 749 }; 750 751 struct cuse_init_out { 752 uint32_t major; 753 uint32_t minor; 754 uint32_t unused; 755 uint32_t flags; 756 uint32_t max_read; 757 uint32_t max_write; 758 uint32_t dev_major; /* chardev major */ 759 uint32_t dev_minor; /* chardev minor */ 760 uint32_t spare[10]; 761 }; 762 763 struct fuse_interrupt_in { 764 uint64_t unique; 765 }; 766 767 struct fuse_bmap_in { 768 uint64_t block; 769 uint32_t blocksize; 770 uint32_t padding; 771 }; 772 773 struct fuse_bmap_out { 774 uint64_t block; 775 }; 776 777 struct fuse_ioctl_in { 778 uint64_t fh; 779 uint32_t flags; 780 uint32_t cmd; 781 uint64_t arg; 782 uint32_t in_size; 783 uint32_t out_size; 784 }; 785 786 struct fuse_ioctl_iovec { 787 uint64_t base; 788 uint64_t len; 789 }; 790 791 struct fuse_ioctl_out { 792 int32_t result; 793 uint32_t flags; 794 uint32_t in_iovs; 795 uint32_t out_iovs; 796 }; 797 798 struct fuse_poll_in { 799 uint64_t fh; 800 uint64_t kh; 801 uint32_t flags; 802 uint32_t events; 803 }; 804 805 struct fuse_poll_out { 806 uint32_t revents; 807 uint32_t padding; 808 }; 809 810 struct fuse_notify_poll_wakeup_out { 811 uint64_t kh; 812 }; 813 814 struct fuse_fallocate_in { 815 uint64_t fh; 816 uint64_t offset; 817 uint64_t length; 818 uint32_t mode; 819 uint32_t padding; 820 }; 821 822 struct fuse_in_header { 823 uint32_t len; 824 uint32_t opcode; 825 uint64_t unique; 826 uint64_t nodeid; 827 uint32_t uid; 828 uint32_t gid; 829 uint32_t pid; 830 uint32_t padding; 831 }; 832 833 /* fuse_passthrough_out for passthrough V1 */ 834 struct fuse_passthrough_out { 835 uint32_t fd; 836 /* For future implementation */ 837 uint32_t len; 838 void *vec; 839 }; 840 841 struct fuse_out_header { 842 uint32_t len; 843 int32_t error; 844 uint64_t unique; 845 }; 846 847 struct fuse_dirent { 848 uint64_t ino; 849 uint64_t off; 850 uint32_t namelen; 851 uint32_t type; 852 char name[]; 853 }; 854 855 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 856 #define FUSE_DIRENT_ALIGN(x) \ 857 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 858 #define FUSE_DIRENT_SIZE(d) \ 859 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 860 861 struct fuse_direntplus { 862 struct fuse_entry_out entry_out; 863 struct fuse_dirent dirent; 864 }; 865 866 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 867 offsetof(struct fuse_direntplus, dirent.name) 868 #define FUSE_DIRENTPLUS_SIZE(d) \ 869 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 870 871 struct fuse_notify_inval_inode_out { 872 uint64_t ino; 873 int64_t off; 874 int64_t len; 875 }; 876 877 struct fuse_notify_inval_entry_out { 878 uint64_t parent; 879 uint32_t namelen; 880 uint32_t padding; 881 }; 882 883 struct fuse_notify_delete_out { 884 uint64_t parent; 885 uint64_t child; 886 uint32_t namelen; 887 uint32_t padding; 888 }; 889 890 struct fuse_notify_store_out { 891 uint64_t nodeid; 892 uint64_t offset; 893 uint32_t size; 894 uint32_t padding; 895 }; 896 897 struct fuse_notify_retrieve_out { 898 uint64_t notify_unique; 899 uint64_t nodeid; 900 uint64_t offset; 901 uint32_t size; 902 uint32_t padding; 903 }; 904 905 /* Matches the size of fuse_write_in */ 906 struct fuse_notify_retrieve_in { 907 uint64_t dummy1; 908 uint64_t offset; 909 uint32_t size; 910 uint32_t dummy2; 911 uint64_t dummy3; 912 uint64_t dummy4; 913 }; 914 915 /* Device ioctls: */ 916 #define FUSE_DEV_IOC_MAGIC 229 917 #define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t) 918 /* 127 is reserved for the V1 interface implementation in Android */ 919 #define FUSE_DEV_IOC_PASSTHROUGH_OPEN _IOW(FUSE_DEV_IOC_MAGIC, 127, struct fuse_passthrough_out) 920 921 struct fuse_lseek_in { 922 uint64_t fh; 923 uint64_t offset; 924 uint32_t whence; 925 uint32_t padding; 926 }; 927 928 struct fuse_lseek_out { 929 uint64_t offset; 930 }; 931 932 struct fuse_copy_file_range_in { 933 uint64_t fh_in; 934 uint64_t off_in; 935 uint64_t nodeid_out; 936 uint64_t fh_out; 937 uint64_t off_out; 938 uint64_t len; 939 uint64_t flags; 940 }; 941 942 #define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0) 943 #define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1) 944 struct fuse_setupmapping_in { 945 /* An already open handle */ 946 uint64_t fh; 947 /* Offset into the file to start the mapping */ 948 uint64_t foffset; 949 /* Length of mapping required */ 950 uint64_t len; 951 /* Flags, FUSE_SETUPMAPPING_FLAG_* */ 952 uint64_t flags; 953 /* Offset in Memory Window */ 954 uint64_t moffset; 955 }; 956 957 struct fuse_removemapping_in { 958 /* number of fuse_removemapping_one follows */ 959 uint32_t count; 960 }; 961 962 struct fuse_removemapping_one { 963 /* Offset into the dax window start the unmapping */ 964 uint64_t moffset; 965 /* Length of mapping required */ 966 uint64_t len; 967 }; 968 969 #define FUSE_REMOVEMAPPING_MAX_ENTRY \ 970 (PAGE_SIZE / sizeof(struct fuse_removemapping_one)) 971 972 #endif /* _LINUX_FUSE_H */ 973