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 * - extend fuse_setxattr_in, add FUSE_SETXATTR_EXT 183 * - add FUSE_SETXATTR_ACL_KILL_SGID 184 * 185 * 7.34 186 * - add FUSE_SYNCFS 187 */ 188 189 #ifndef _LINUX_FUSE_H 190 #define _LINUX_FUSE_H 191 192 #ifdef __KERNEL__ 193 #include <linux/types.h> 194 #else 195 #include <stdint.h> 196 #endif 197 198 /* 199 * Version negotiation: 200 * 201 * Both the kernel and userspace send the version they support in the 202 * INIT request and reply respectively. 203 * 204 * If the major versions match then both shall use the smallest 205 * of the two minor versions for communication. 206 * 207 * If the kernel supports a larger major version, then userspace shall 208 * reply with the major version it supports, ignore the rest of the 209 * INIT message and expect a new INIT message from the kernel with a 210 * matching major version. 211 * 212 * If the library supports a larger major version, then it shall fall 213 * back to the major protocol version sent by the kernel for 214 * communication and reply with that major version (and an arbitrary 215 * supported minor version). 216 */ 217 218 /** Version number of this interface */ 219 #define FUSE_KERNEL_VERSION 7 220 221 /** Minor version number of this interface */ 222 #define FUSE_KERNEL_MINOR_VERSION 34 223 224 /** The node ID of the root inode */ 225 #define FUSE_ROOT_ID 1 226 227 /* Make sure all structures are padded to 64bit boundary, so 32bit 228 userspace works under 64bit kernels */ 229 230 struct fuse_attr { 231 uint64_t ino; 232 uint64_t size; 233 uint64_t blocks; 234 uint64_t atime; 235 uint64_t mtime; 236 uint64_t ctime; 237 uint32_t atimensec; 238 uint32_t mtimensec; 239 uint32_t ctimensec; 240 uint32_t mode; 241 uint32_t nlink; 242 uint32_t uid; 243 uint32_t gid; 244 uint32_t rdev; 245 uint32_t blksize; 246 uint32_t flags; 247 }; 248 249 struct fuse_kstatfs { 250 uint64_t blocks; 251 uint64_t bfree; 252 uint64_t bavail; 253 uint64_t files; 254 uint64_t ffree; 255 uint32_t bsize; 256 uint32_t namelen; 257 uint32_t frsize; 258 uint32_t padding; 259 uint32_t spare[6]; 260 }; 261 262 struct fuse_file_lock { 263 uint64_t start; 264 uint64_t end; 265 uint32_t type; 266 uint32_t pid; /* tgid */ 267 }; 268 269 /** 270 * Bitmasks for fuse_setattr_in.valid 271 */ 272 #define FATTR_MODE (1 << 0) 273 #define FATTR_UID (1 << 1) 274 #define FATTR_GID (1 << 2) 275 #define FATTR_SIZE (1 << 3) 276 #define FATTR_ATIME (1 << 4) 277 #define FATTR_MTIME (1 << 5) 278 #define FATTR_FH (1 << 6) 279 #define FATTR_ATIME_NOW (1 << 7) 280 #define FATTR_MTIME_NOW (1 << 8) 281 #define FATTR_LOCKOWNER (1 << 9) 282 #define FATTR_CTIME (1 << 10) 283 #define FATTR_KILL_SUIDGID (1 << 11) 284 285 /** 286 * Flags returned by the OPEN request 287 * 288 * FOPEN_DIRECT_IO: bypass page cache for this open file 289 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 290 * FOPEN_NONSEEKABLE: the file is not seekable 291 * FOPEN_CACHE_DIR: allow caching this directory 292 * FOPEN_STREAM: the file is stream-like (no file position at all) 293 */ 294 #define FOPEN_DIRECT_IO (1 << 0) 295 #define FOPEN_KEEP_CACHE (1 << 1) 296 #define FOPEN_NONSEEKABLE (1 << 2) 297 #define FOPEN_CACHE_DIR (1 << 3) 298 #define FOPEN_STREAM (1 << 4) 299 300 /** 301 * INIT request/reply flags 302 * 303 * FUSE_ASYNC_READ: asynchronous read requests 304 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 305 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 306 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 307 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 308 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 309 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 310 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 311 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 312 * FUSE_SPLICE_READ: kernel supports splice read on the device 313 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 314 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 315 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 316 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 317 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 318 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 319 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 320 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 321 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 322 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 323 * FUSE_POSIX_ACL: filesystem supports posix acls 324 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 325 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 326 * FUSE_CACHE_SYMLINKS: cache READLINK responses 327 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir 328 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request 329 * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for 330 * foffset and moffset fields in struct 331 * fuse_setupmapping_out and fuse_removemapping_one. 332 * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts 333 * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc. 334 * Upon write/truncate suid/sgid is only killed if caller 335 * does not have CAP_FSETID. Additionally upon 336 * write/truncate sgid is killed only if file has group 337 * execute permission. (Same as Linux VFS behavior). 338 * FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in 339 */ 340 #define FUSE_ASYNC_READ (1 << 0) 341 #define FUSE_POSIX_LOCKS (1 << 1) 342 #define FUSE_FILE_OPS (1 << 2) 343 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 344 #define FUSE_EXPORT_SUPPORT (1 << 4) 345 #define FUSE_BIG_WRITES (1 << 5) 346 #define FUSE_DONT_MASK (1 << 6) 347 #define FUSE_SPLICE_WRITE (1 << 7) 348 #define FUSE_SPLICE_MOVE (1 << 8) 349 #define FUSE_SPLICE_READ (1 << 9) 350 #define FUSE_FLOCK_LOCKS (1 << 10) 351 #define FUSE_HAS_IOCTL_DIR (1 << 11) 352 #define FUSE_AUTO_INVAL_DATA (1 << 12) 353 #define FUSE_DO_READDIRPLUS (1 << 13) 354 #define FUSE_READDIRPLUS_AUTO (1 << 14) 355 #define FUSE_ASYNC_DIO (1 << 15) 356 #define FUSE_WRITEBACK_CACHE (1 << 16) 357 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 358 #define FUSE_PARALLEL_DIROPS (1 << 18) 359 #define FUSE_HANDLE_KILLPRIV (1 << 19) 360 #define FUSE_POSIX_ACL (1 << 20) 361 #define FUSE_ABORT_ERROR (1 << 21) 362 #define FUSE_MAX_PAGES (1 << 22) 363 #define FUSE_CACHE_SYMLINKS (1 << 23) 364 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24) 365 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25) 366 #define FUSE_MAP_ALIGNMENT (1 << 26) 367 #define FUSE_SUBMOUNTS (1 << 27) 368 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28) 369 #define FUSE_SETXATTR_EXT (1 << 29) 370 #define FUSE_PASSTHROUGH (1 << 31) 371 372 /** 373 * CUSE INIT request/reply flags 374 * 375 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 376 */ 377 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 378 379 /** 380 * Release flags 381 */ 382 #define FUSE_RELEASE_FLUSH (1 << 0) 383 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 384 385 /** 386 * Getattr flags 387 */ 388 #define FUSE_GETATTR_FH (1 << 0) 389 390 /** 391 * Lock flags 392 */ 393 #define FUSE_LK_FLOCK (1 << 0) 394 395 /** 396 * WRITE flags 397 * 398 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 399 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 400 * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits 401 */ 402 #define FUSE_WRITE_CACHE (1 << 0) 403 #define FUSE_WRITE_LOCKOWNER (1 << 1) 404 #define FUSE_WRITE_KILL_SUIDGID (1 << 2) 405 406 /* Obsolete alias; this flag implies killing suid/sgid only. */ 407 #define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID 408 409 /** 410 * Read flags 411 */ 412 #define FUSE_READ_LOCKOWNER (1 << 1) 413 414 /** 415 * Ioctl flags 416 * 417 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 418 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 419 * FUSE_IOCTL_RETRY: retry with new iovecs 420 * FUSE_IOCTL_32BIT: 32bit ioctl 421 * FUSE_IOCTL_DIR: is a directory 422 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) 423 * 424 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 425 */ 426 #define FUSE_IOCTL_COMPAT (1 << 0) 427 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 428 #define FUSE_IOCTL_RETRY (1 << 2) 429 #define FUSE_IOCTL_32BIT (1 << 3) 430 #define FUSE_IOCTL_DIR (1 << 4) 431 #define FUSE_IOCTL_COMPAT_X32 (1 << 5) 432 433 #define FUSE_IOCTL_MAX_IOV 256 434 435 /** 436 * Poll flags 437 * 438 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 439 */ 440 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 441 442 /** 443 * Fsync flags 444 * 445 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata 446 */ 447 #define FUSE_FSYNC_FDATASYNC (1 << 0) 448 449 /** 450 * fuse_attr flags 451 * 452 * FUSE_ATTR_SUBMOUNT: Object is a submount root 453 */ 454 #define FUSE_ATTR_SUBMOUNT (1 << 0) 455 456 /** 457 * Open flags 458 * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable 459 */ 460 #define FUSE_OPEN_KILL_SUIDGID (1 << 0) 461 462 /** 463 * setxattr flags 464 * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set 465 */ 466 #define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0) 467 468 enum fuse_opcode { 469 FUSE_LOOKUP = 1, 470 FUSE_FORGET = 2, /* no reply */ 471 FUSE_GETATTR = 3, 472 FUSE_SETATTR = 4, 473 FUSE_READLINK = 5, 474 FUSE_SYMLINK = 6, 475 FUSE_MKNOD = 8, 476 FUSE_MKDIR = 9, 477 FUSE_UNLINK = 10, 478 FUSE_RMDIR = 11, 479 FUSE_RENAME = 12, 480 FUSE_LINK = 13, 481 FUSE_OPEN = 14, 482 FUSE_READ = 15, 483 FUSE_WRITE = 16, 484 FUSE_STATFS = 17, 485 FUSE_RELEASE = 18, 486 FUSE_FSYNC = 20, 487 FUSE_SETXATTR = 21, 488 FUSE_GETXATTR = 22, 489 FUSE_LISTXATTR = 23, 490 FUSE_REMOVEXATTR = 24, 491 FUSE_FLUSH = 25, 492 FUSE_INIT = 26, 493 FUSE_OPENDIR = 27, 494 FUSE_READDIR = 28, 495 FUSE_RELEASEDIR = 29, 496 FUSE_FSYNCDIR = 30, 497 FUSE_GETLK = 31, 498 FUSE_SETLK = 32, 499 FUSE_SETLKW = 33, 500 FUSE_ACCESS = 34, 501 FUSE_CREATE = 35, 502 FUSE_INTERRUPT = 36, 503 FUSE_BMAP = 37, 504 FUSE_DESTROY = 38, 505 FUSE_IOCTL = 39, 506 FUSE_POLL = 40, 507 FUSE_NOTIFY_REPLY = 41, 508 FUSE_BATCH_FORGET = 42, 509 FUSE_FALLOCATE = 43, 510 FUSE_READDIRPLUS = 44, 511 FUSE_RENAME2 = 45, 512 FUSE_LSEEK = 46, 513 FUSE_COPY_FILE_RANGE = 47, 514 FUSE_SETUPMAPPING = 48, 515 FUSE_REMOVEMAPPING = 49, 516 FUSE_SYNCFS = 50, 517 FUSE_CANONICAL_PATH = 2016, 518 519 /* CUSE specific operations */ 520 CUSE_INIT = 4096, 521 522 /* Reserved opcodes: helpful to detect structure endian-ness */ 523 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */ 524 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */ 525 }; 526 527 enum fuse_notify_code { 528 FUSE_NOTIFY_POLL = 1, 529 FUSE_NOTIFY_INVAL_INODE = 2, 530 FUSE_NOTIFY_INVAL_ENTRY = 3, 531 FUSE_NOTIFY_STORE = 4, 532 FUSE_NOTIFY_RETRIEVE = 5, 533 FUSE_NOTIFY_DELETE = 6, 534 FUSE_NOTIFY_CODE_MAX, 535 }; 536 537 /* The read buffer is required to be at least 8k, but may be much larger */ 538 #define FUSE_MIN_READ_BUFFER 8192 539 540 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 541 542 struct fuse_entry_out { 543 uint64_t nodeid; /* Inode ID */ 544 uint64_t generation; /* Inode generation: nodeid:gen must 545 be unique for the fs's lifetime */ 546 uint64_t entry_valid; /* Cache timeout for the name */ 547 uint64_t attr_valid; /* Cache timeout for the attributes */ 548 uint32_t entry_valid_nsec; 549 uint32_t attr_valid_nsec; 550 struct fuse_attr attr; 551 }; 552 553 struct fuse_forget_in { 554 uint64_t nlookup; 555 }; 556 557 struct fuse_forget_one { 558 uint64_t nodeid; 559 uint64_t nlookup; 560 }; 561 562 struct fuse_batch_forget_in { 563 uint32_t count; 564 uint32_t dummy; 565 }; 566 567 struct fuse_getattr_in { 568 uint32_t getattr_flags; 569 uint32_t dummy; 570 uint64_t fh; 571 }; 572 573 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 574 575 struct fuse_attr_out { 576 uint64_t attr_valid; /* Cache timeout for the attributes */ 577 uint32_t attr_valid_nsec; 578 uint32_t dummy; 579 struct fuse_attr attr; 580 }; 581 582 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 583 584 struct fuse_mknod_in { 585 uint32_t mode; 586 uint32_t rdev; 587 uint32_t umask; 588 uint32_t padding; 589 }; 590 591 struct fuse_mkdir_in { 592 uint32_t mode; 593 uint32_t umask; 594 }; 595 596 struct fuse_rename_in { 597 uint64_t newdir; 598 }; 599 600 struct fuse_rename2_in { 601 uint64_t newdir; 602 uint32_t flags; 603 uint32_t padding; 604 }; 605 606 struct fuse_link_in { 607 uint64_t oldnodeid; 608 }; 609 610 struct fuse_setattr_in { 611 uint32_t valid; 612 uint32_t padding; 613 uint64_t fh; 614 uint64_t size; 615 uint64_t lock_owner; 616 uint64_t atime; 617 uint64_t mtime; 618 uint64_t ctime; 619 uint32_t atimensec; 620 uint32_t mtimensec; 621 uint32_t ctimensec; 622 uint32_t mode; 623 uint32_t unused4; 624 uint32_t uid; 625 uint32_t gid; 626 uint32_t unused5; 627 }; 628 629 struct fuse_open_in { 630 uint32_t flags; 631 uint32_t open_flags; /* FUSE_OPEN_... */ 632 }; 633 634 struct fuse_create_in { 635 uint32_t flags; 636 uint32_t mode; 637 uint32_t umask; 638 uint32_t open_flags; /* FUSE_OPEN_... */ 639 }; 640 641 struct fuse_open_out { 642 uint64_t fh; 643 uint32_t open_flags; 644 uint32_t passthrough_fh; 645 }; 646 647 struct fuse_release_in { 648 uint64_t fh; 649 uint32_t flags; 650 uint32_t release_flags; 651 uint64_t lock_owner; 652 }; 653 654 struct fuse_flush_in { 655 uint64_t fh; 656 uint32_t unused; 657 uint32_t padding; 658 uint64_t lock_owner; 659 }; 660 661 struct fuse_read_in { 662 uint64_t fh; 663 uint64_t offset; 664 uint32_t size; 665 uint32_t read_flags; 666 uint64_t lock_owner; 667 uint32_t flags; 668 uint32_t padding; 669 }; 670 671 #define FUSE_COMPAT_WRITE_IN_SIZE 24 672 673 struct fuse_write_in { 674 uint64_t fh; 675 uint64_t offset; 676 uint32_t size; 677 uint32_t write_flags; 678 uint64_t lock_owner; 679 uint32_t flags; 680 uint32_t padding; 681 }; 682 683 struct fuse_write_out { 684 uint32_t size; 685 uint32_t padding; 686 }; 687 688 #define FUSE_COMPAT_STATFS_SIZE 48 689 690 struct fuse_statfs_out { 691 struct fuse_kstatfs st; 692 }; 693 694 struct fuse_fsync_in { 695 uint64_t fh; 696 uint32_t fsync_flags; 697 uint32_t padding; 698 }; 699 700 #define FUSE_COMPAT_SETXATTR_IN_SIZE 8 701 702 struct fuse_setxattr_in { 703 uint32_t size; 704 uint32_t flags; 705 uint32_t setxattr_flags; 706 uint32_t padding; 707 }; 708 709 struct fuse_getxattr_in { 710 uint32_t size; 711 uint32_t padding; 712 }; 713 714 struct fuse_getxattr_out { 715 uint32_t size; 716 uint32_t padding; 717 }; 718 719 struct fuse_lk_in { 720 uint64_t fh; 721 uint64_t owner; 722 struct fuse_file_lock lk; 723 uint32_t lk_flags; 724 uint32_t padding; 725 }; 726 727 struct fuse_lk_out { 728 struct fuse_file_lock lk; 729 }; 730 731 struct fuse_access_in { 732 uint32_t mask; 733 uint32_t padding; 734 }; 735 736 struct fuse_init_in { 737 uint32_t major; 738 uint32_t minor; 739 uint32_t max_readahead; 740 uint32_t flags; 741 }; 742 743 #define FUSE_COMPAT_INIT_OUT_SIZE 8 744 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 745 746 struct fuse_init_out { 747 uint32_t major; 748 uint32_t minor; 749 uint32_t max_readahead; 750 uint32_t flags; 751 uint16_t max_background; 752 uint16_t congestion_threshold; 753 uint32_t max_write; 754 uint32_t time_gran; 755 uint16_t max_pages; 756 uint16_t map_alignment; 757 uint32_t unused[8]; 758 }; 759 760 #define CUSE_INIT_INFO_MAX 4096 761 762 struct cuse_init_in { 763 uint32_t major; 764 uint32_t minor; 765 uint32_t unused; 766 uint32_t flags; 767 }; 768 769 struct cuse_init_out { 770 uint32_t major; 771 uint32_t minor; 772 uint32_t unused; 773 uint32_t flags; 774 uint32_t max_read; 775 uint32_t max_write; 776 uint32_t dev_major; /* chardev major */ 777 uint32_t dev_minor; /* chardev minor */ 778 uint32_t spare[10]; 779 }; 780 781 struct fuse_interrupt_in { 782 uint64_t unique; 783 }; 784 785 struct fuse_bmap_in { 786 uint64_t block; 787 uint32_t blocksize; 788 uint32_t padding; 789 }; 790 791 struct fuse_bmap_out { 792 uint64_t block; 793 }; 794 795 struct fuse_ioctl_in { 796 uint64_t fh; 797 uint32_t flags; 798 uint32_t cmd; 799 uint64_t arg; 800 uint32_t in_size; 801 uint32_t out_size; 802 }; 803 804 struct fuse_ioctl_iovec { 805 uint64_t base; 806 uint64_t len; 807 }; 808 809 struct fuse_ioctl_out { 810 int32_t result; 811 uint32_t flags; 812 uint32_t in_iovs; 813 uint32_t out_iovs; 814 }; 815 816 struct fuse_poll_in { 817 uint64_t fh; 818 uint64_t kh; 819 uint32_t flags; 820 uint32_t events; 821 }; 822 823 struct fuse_poll_out { 824 uint32_t revents; 825 uint32_t padding; 826 }; 827 828 struct fuse_notify_poll_wakeup_out { 829 uint64_t kh; 830 }; 831 832 struct fuse_fallocate_in { 833 uint64_t fh; 834 uint64_t offset; 835 uint64_t length; 836 uint32_t mode; 837 uint32_t padding; 838 }; 839 840 struct fuse_in_header { 841 uint32_t len; 842 uint32_t opcode; 843 uint64_t unique; 844 uint64_t nodeid; 845 uint32_t uid; 846 uint32_t gid; 847 uint32_t pid; 848 uint32_t padding; 849 }; 850 851 struct fuse_out_header { 852 uint32_t len; 853 int32_t error; 854 uint64_t unique; 855 }; 856 857 struct fuse_dirent { 858 uint64_t ino; 859 uint64_t off; 860 uint32_t namelen; 861 uint32_t type; 862 char name[]; 863 }; 864 865 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 866 #define FUSE_DIRENT_ALIGN(x) \ 867 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 868 #define FUSE_DIRENT_SIZE(d) \ 869 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 870 871 struct fuse_direntplus { 872 struct fuse_entry_out entry_out; 873 struct fuse_dirent dirent; 874 }; 875 876 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 877 offsetof(struct fuse_direntplus, dirent.name) 878 #define FUSE_DIRENTPLUS_SIZE(d) \ 879 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 880 881 struct fuse_notify_inval_inode_out { 882 uint64_t ino; 883 int64_t off; 884 int64_t len; 885 }; 886 887 struct fuse_notify_inval_entry_out { 888 uint64_t parent; 889 uint32_t namelen; 890 uint32_t padding; 891 }; 892 893 struct fuse_notify_delete_out { 894 uint64_t parent; 895 uint64_t child; 896 uint32_t namelen; 897 uint32_t padding; 898 }; 899 900 struct fuse_notify_store_out { 901 uint64_t nodeid; 902 uint64_t offset; 903 uint32_t size; 904 uint32_t padding; 905 }; 906 907 struct fuse_notify_retrieve_out { 908 uint64_t notify_unique; 909 uint64_t nodeid; 910 uint64_t offset; 911 uint32_t size; 912 uint32_t padding; 913 }; 914 915 /* Matches the size of fuse_write_in */ 916 struct fuse_notify_retrieve_in { 917 uint64_t dummy1; 918 uint64_t offset; 919 uint32_t size; 920 uint32_t dummy2; 921 uint64_t dummy3; 922 uint64_t dummy4; 923 }; 924 925 /* Device ioctls: */ 926 #define FUSE_DEV_IOC_MAGIC 229 927 #define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t) 928 /* 127 is reserved for the V1 interface implementation in Android (deprecated) */ 929 /* 126 is reserved for the V2 interface implementation in Android */ 930 #define FUSE_DEV_IOC_PASSTHROUGH_OPEN _IOW(FUSE_DEV_IOC_MAGIC, 126, __u32) 931 932 struct fuse_lseek_in { 933 uint64_t fh; 934 uint64_t offset; 935 uint32_t whence; 936 uint32_t padding; 937 }; 938 939 struct fuse_lseek_out { 940 uint64_t offset; 941 }; 942 943 struct fuse_copy_file_range_in { 944 uint64_t fh_in; 945 uint64_t off_in; 946 uint64_t nodeid_out; 947 uint64_t fh_out; 948 uint64_t off_out; 949 uint64_t len; 950 uint64_t flags; 951 }; 952 953 #define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0) 954 #define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1) 955 struct fuse_setupmapping_in { 956 /* An already open handle */ 957 uint64_t fh; 958 /* Offset into the file to start the mapping */ 959 uint64_t foffset; 960 /* Length of mapping required */ 961 uint64_t len; 962 /* Flags, FUSE_SETUPMAPPING_FLAG_* */ 963 uint64_t flags; 964 /* Offset in Memory Window */ 965 uint64_t moffset; 966 }; 967 968 struct fuse_removemapping_in { 969 /* number of fuse_removemapping_one follows */ 970 uint32_t count; 971 }; 972 973 struct fuse_removemapping_one { 974 /* Offset into the dax window start the unmapping */ 975 uint64_t moffset; 976 /* Length of mapping required */ 977 uint64_t len; 978 }; 979 980 #define FUSE_REMOVEMAPPING_MAX_ENTRY \ 981 (PAGE_SIZE / sizeof(struct fuse_removemapping_one)) 982 983 struct fuse_syncfs_in { 984 uint64_t padding; 985 }; 986 987 #endif /* _LINUX_FUSE_H */ 988