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 * 7.35 189 * - add FOPEN_NOFLUSH 190 */ 191 192 #ifndef _LINUX_FUSE_H 193 #define _LINUX_FUSE_H 194 195 #ifdef __KERNEL__ 196 #include <linux/types.h> 197 #else 198 #include <stdint.h> 199 #endif 200 201 /* 202 * Version negotiation: 203 * 204 * Both the kernel and userspace send the version they support in the 205 * INIT request and reply respectively. 206 * 207 * If the major versions match then both shall use the smallest 208 * of the two minor versions for communication. 209 * 210 * If the kernel supports a larger major version, then userspace shall 211 * reply with the major version it supports, ignore the rest of the 212 * INIT message and expect a new INIT message from the kernel with a 213 * matching major version. 214 * 215 * If the library supports a larger major version, then it shall fall 216 * back to the major protocol version sent by the kernel for 217 * communication and reply with that major version (and an arbitrary 218 * supported minor version). 219 */ 220 221 /** Version number of this interface */ 222 #define FUSE_KERNEL_VERSION 7 223 224 /** Minor version number of this interface */ 225 #define FUSE_KERNEL_MINOR_VERSION 35 226 227 /** The node ID of the root inode */ 228 #define FUSE_ROOT_ID 1 229 230 /* Make sure all structures are padded to 64bit boundary, so 32bit 231 userspace works under 64bit kernels */ 232 233 struct fuse_attr { 234 uint64_t ino; 235 uint64_t size; 236 uint64_t blocks; 237 uint64_t atime; 238 uint64_t mtime; 239 uint64_t ctime; 240 uint32_t atimensec; 241 uint32_t mtimensec; 242 uint32_t ctimensec; 243 uint32_t mode; 244 uint32_t nlink; 245 uint32_t uid; 246 uint32_t gid; 247 uint32_t rdev; 248 uint32_t blksize; 249 uint32_t flags; 250 }; 251 252 struct fuse_kstatfs { 253 uint64_t blocks; 254 uint64_t bfree; 255 uint64_t bavail; 256 uint64_t files; 257 uint64_t ffree; 258 uint32_t bsize; 259 uint32_t namelen; 260 uint32_t frsize; 261 uint32_t padding; 262 uint32_t spare[6]; 263 }; 264 265 struct fuse_file_lock { 266 uint64_t start; 267 uint64_t end; 268 uint32_t type; 269 uint32_t pid; /* tgid */ 270 }; 271 272 /** 273 * Bitmasks for fuse_setattr_in.valid 274 */ 275 #define FATTR_MODE (1 << 0) 276 #define FATTR_UID (1 << 1) 277 #define FATTR_GID (1 << 2) 278 #define FATTR_SIZE (1 << 3) 279 #define FATTR_ATIME (1 << 4) 280 #define FATTR_MTIME (1 << 5) 281 #define FATTR_FH (1 << 6) 282 #define FATTR_ATIME_NOW (1 << 7) 283 #define FATTR_MTIME_NOW (1 << 8) 284 #define FATTR_LOCKOWNER (1 << 9) 285 #define FATTR_CTIME (1 << 10) 286 #define FATTR_KILL_SUIDGID (1 << 11) 287 288 /** 289 * Flags returned by the OPEN request 290 * 291 * FOPEN_DIRECT_IO: bypass page cache for this open file 292 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open 293 * FOPEN_NONSEEKABLE: the file is not seekable 294 * FOPEN_CACHE_DIR: allow caching this directory 295 * FOPEN_STREAM: the file is stream-like (no file position at all) 296 * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE) 297 */ 298 #define FOPEN_DIRECT_IO (1 << 0) 299 #define FOPEN_KEEP_CACHE (1 << 1) 300 #define FOPEN_NONSEEKABLE (1 << 2) 301 #define FOPEN_CACHE_DIR (1 << 3) 302 #define FOPEN_STREAM (1 << 4) 303 #define FOPEN_NOFLUSH (1 << 5) 304 305 /** 306 * INIT request/reply flags 307 * 308 * FUSE_ASYNC_READ: asynchronous read requests 309 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks 310 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) 311 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem 312 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." 313 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB 314 * FUSE_DONT_MASK: don't apply umask to file mode on create operations 315 * FUSE_SPLICE_WRITE: kernel supports splice write on the device 316 * FUSE_SPLICE_MOVE: kernel supports splice move on the device 317 * FUSE_SPLICE_READ: kernel supports splice read on the device 318 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks 319 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories 320 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages 321 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) 322 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus 323 * FUSE_ASYNC_DIO: asynchronous direct I/O submission 324 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes 325 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens 326 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir 327 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc 328 * FUSE_POSIX_ACL: filesystem supports posix acls 329 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED 330 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages 331 * FUSE_CACHE_SYMLINKS: cache READLINK responses 332 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir 333 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request 334 * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for 335 * foffset and moffset fields in struct 336 * fuse_setupmapping_out and fuse_removemapping_one. 337 * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts 338 * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc. 339 * Upon write/truncate suid/sgid is only killed if caller 340 * does not have CAP_FSETID. Additionally upon 341 * write/truncate sgid is killed only if file has group 342 * execute permission. (Same as Linux VFS behavior). 343 * FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in 344 */ 345 #define FUSE_ASYNC_READ (1 << 0) 346 #define FUSE_POSIX_LOCKS (1 << 1) 347 #define FUSE_FILE_OPS (1 << 2) 348 #define FUSE_ATOMIC_O_TRUNC (1 << 3) 349 #define FUSE_EXPORT_SUPPORT (1 << 4) 350 #define FUSE_BIG_WRITES (1 << 5) 351 #define FUSE_DONT_MASK (1 << 6) 352 #define FUSE_SPLICE_WRITE (1 << 7) 353 #define FUSE_SPLICE_MOVE (1 << 8) 354 #define FUSE_SPLICE_READ (1 << 9) 355 #define FUSE_FLOCK_LOCKS (1 << 10) 356 #define FUSE_HAS_IOCTL_DIR (1 << 11) 357 #define FUSE_AUTO_INVAL_DATA (1 << 12) 358 #define FUSE_DO_READDIRPLUS (1 << 13) 359 #define FUSE_READDIRPLUS_AUTO (1 << 14) 360 #define FUSE_ASYNC_DIO (1 << 15) 361 #define FUSE_WRITEBACK_CACHE (1 << 16) 362 #define FUSE_NO_OPEN_SUPPORT (1 << 17) 363 #define FUSE_PARALLEL_DIROPS (1 << 18) 364 #define FUSE_HANDLE_KILLPRIV (1 << 19) 365 #define FUSE_POSIX_ACL (1 << 20) 366 #define FUSE_ABORT_ERROR (1 << 21) 367 #define FUSE_MAX_PAGES (1 << 22) 368 #define FUSE_CACHE_SYMLINKS (1 << 23) 369 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24) 370 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25) 371 #define FUSE_MAP_ALIGNMENT (1 << 26) 372 #define FUSE_SUBMOUNTS (1 << 27) 373 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28) 374 #define FUSE_SETXATTR_EXT (1 << 29) 375 376 /** 377 * CUSE INIT request/reply flags 378 * 379 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl 380 */ 381 #define CUSE_UNRESTRICTED_IOCTL (1 << 0) 382 383 /** 384 * Release flags 385 */ 386 #define FUSE_RELEASE_FLUSH (1 << 0) 387 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) 388 389 /** 390 * Getattr flags 391 */ 392 #define FUSE_GETATTR_FH (1 << 0) 393 394 /** 395 * Lock flags 396 */ 397 #define FUSE_LK_FLOCK (1 << 0) 398 399 /** 400 * WRITE flags 401 * 402 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed 403 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid 404 * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits 405 */ 406 #define FUSE_WRITE_CACHE (1 << 0) 407 #define FUSE_WRITE_LOCKOWNER (1 << 1) 408 #define FUSE_WRITE_KILL_SUIDGID (1 << 2) 409 410 /* Obsolete alias; this flag implies killing suid/sgid only. */ 411 #define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID 412 413 /** 414 * Read flags 415 */ 416 #define FUSE_READ_LOCKOWNER (1 << 1) 417 418 /** 419 * Ioctl flags 420 * 421 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine 422 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed 423 * FUSE_IOCTL_RETRY: retry with new iovecs 424 * FUSE_IOCTL_32BIT: 32bit ioctl 425 * FUSE_IOCTL_DIR: is a directory 426 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) 427 * 428 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs 429 */ 430 #define FUSE_IOCTL_COMPAT (1 << 0) 431 #define FUSE_IOCTL_UNRESTRICTED (1 << 1) 432 #define FUSE_IOCTL_RETRY (1 << 2) 433 #define FUSE_IOCTL_32BIT (1 << 3) 434 #define FUSE_IOCTL_DIR (1 << 4) 435 #define FUSE_IOCTL_COMPAT_X32 (1 << 5) 436 437 #define FUSE_IOCTL_MAX_IOV 256 438 439 /** 440 * Poll flags 441 * 442 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify 443 */ 444 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) 445 446 /** 447 * Fsync flags 448 * 449 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata 450 */ 451 #define FUSE_FSYNC_FDATASYNC (1 << 0) 452 453 /** 454 * fuse_attr flags 455 * 456 * FUSE_ATTR_SUBMOUNT: Object is a submount root 457 */ 458 #define FUSE_ATTR_SUBMOUNT (1 << 0) 459 460 /** 461 * Open flags 462 * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable 463 */ 464 #define FUSE_OPEN_KILL_SUIDGID (1 << 0) 465 466 /** 467 * setxattr flags 468 * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set 469 */ 470 #define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0) 471 472 enum fuse_opcode { 473 FUSE_LOOKUP = 1, 474 FUSE_FORGET = 2, /* no reply */ 475 FUSE_GETATTR = 3, 476 FUSE_SETATTR = 4, 477 FUSE_READLINK = 5, 478 FUSE_SYMLINK = 6, 479 FUSE_MKNOD = 8, 480 FUSE_MKDIR = 9, 481 FUSE_UNLINK = 10, 482 FUSE_RMDIR = 11, 483 FUSE_RENAME = 12, 484 FUSE_LINK = 13, 485 FUSE_OPEN = 14, 486 FUSE_READ = 15, 487 FUSE_WRITE = 16, 488 FUSE_STATFS = 17, 489 FUSE_RELEASE = 18, 490 FUSE_FSYNC = 20, 491 FUSE_SETXATTR = 21, 492 FUSE_GETXATTR = 22, 493 FUSE_LISTXATTR = 23, 494 FUSE_REMOVEXATTR = 24, 495 FUSE_FLUSH = 25, 496 FUSE_INIT = 26, 497 FUSE_OPENDIR = 27, 498 FUSE_READDIR = 28, 499 FUSE_RELEASEDIR = 29, 500 FUSE_FSYNCDIR = 30, 501 FUSE_GETLK = 31, 502 FUSE_SETLK = 32, 503 FUSE_SETLKW = 33, 504 FUSE_ACCESS = 34, 505 FUSE_CREATE = 35, 506 FUSE_INTERRUPT = 36, 507 FUSE_BMAP = 37, 508 FUSE_DESTROY = 38, 509 FUSE_IOCTL = 39, 510 FUSE_POLL = 40, 511 FUSE_NOTIFY_REPLY = 41, 512 FUSE_BATCH_FORGET = 42, 513 FUSE_FALLOCATE = 43, 514 FUSE_READDIRPLUS = 44, 515 FUSE_RENAME2 = 45, 516 FUSE_LSEEK = 46, 517 FUSE_COPY_FILE_RANGE = 47, 518 FUSE_SETUPMAPPING = 48, 519 FUSE_REMOVEMAPPING = 49, 520 FUSE_SYNCFS = 50, 521 522 /* CUSE specific operations */ 523 CUSE_INIT = 4096, 524 525 /* Reserved opcodes: helpful to detect structure endian-ness */ 526 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */ 527 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */ 528 }; 529 530 enum fuse_notify_code { 531 FUSE_NOTIFY_POLL = 1, 532 FUSE_NOTIFY_INVAL_INODE = 2, 533 FUSE_NOTIFY_INVAL_ENTRY = 3, 534 FUSE_NOTIFY_STORE = 4, 535 FUSE_NOTIFY_RETRIEVE = 5, 536 FUSE_NOTIFY_DELETE = 6, 537 FUSE_NOTIFY_CODE_MAX, 538 }; 539 540 /* The read buffer is required to be at least 8k, but may be much larger */ 541 #define FUSE_MIN_READ_BUFFER 8192 542 543 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 544 545 struct fuse_entry_out { 546 uint64_t nodeid; /* Inode ID */ 547 uint64_t generation; /* Inode generation: nodeid:gen must 548 be unique for the fs's lifetime */ 549 uint64_t entry_valid; /* Cache timeout for the name */ 550 uint64_t attr_valid; /* Cache timeout for the attributes */ 551 uint32_t entry_valid_nsec; 552 uint32_t attr_valid_nsec; 553 struct fuse_attr attr; 554 }; 555 556 struct fuse_forget_in { 557 uint64_t nlookup; 558 }; 559 560 struct fuse_forget_one { 561 uint64_t nodeid; 562 uint64_t nlookup; 563 }; 564 565 struct fuse_batch_forget_in { 566 uint32_t count; 567 uint32_t dummy; 568 }; 569 570 struct fuse_getattr_in { 571 uint32_t getattr_flags; 572 uint32_t dummy; 573 uint64_t fh; 574 }; 575 576 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 577 578 struct fuse_attr_out { 579 uint64_t attr_valid; /* Cache timeout for the attributes */ 580 uint32_t attr_valid_nsec; 581 uint32_t dummy; 582 struct fuse_attr attr; 583 }; 584 585 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 586 587 struct fuse_mknod_in { 588 uint32_t mode; 589 uint32_t rdev; 590 uint32_t umask; 591 uint32_t padding; 592 }; 593 594 struct fuse_mkdir_in { 595 uint32_t mode; 596 uint32_t umask; 597 }; 598 599 struct fuse_rename_in { 600 uint64_t newdir; 601 }; 602 603 struct fuse_rename2_in { 604 uint64_t newdir; 605 uint32_t flags; 606 uint32_t padding; 607 }; 608 609 struct fuse_link_in { 610 uint64_t oldnodeid; 611 }; 612 613 struct fuse_setattr_in { 614 uint32_t valid; 615 uint32_t padding; 616 uint64_t fh; 617 uint64_t size; 618 uint64_t lock_owner; 619 uint64_t atime; 620 uint64_t mtime; 621 uint64_t ctime; 622 uint32_t atimensec; 623 uint32_t mtimensec; 624 uint32_t ctimensec; 625 uint32_t mode; 626 uint32_t unused4; 627 uint32_t uid; 628 uint32_t gid; 629 uint32_t unused5; 630 }; 631 632 struct fuse_open_in { 633 uint32_t flags; 634 uint32_t open_flags; /* FUSE_OPEN_... */ 635 }; 636 637 struct fuse_create_in { 638 uint32_t flags; 639 uint32_t mode; 640 uint32_t umask; 641 uint32_t open_flags; /* FUSE_OPEN_... */ 642 }; 643 644 struct fuse_open_out { 645 uint64_t fh; 646 uint32_t open_flags; 647 uint32_t padding; 648 }; 649 650 struct fuse_release_in { 651 uint64_t fh; 652 uint32_t flags; 653 uint32_t release_flags; 654 uint64_t lock_owner; 655 }; 656 657 struct fuse_flush_in { 658 uint64_t fh; 659 uint32_t unused; 660 uint32_t padding; 661 uint64_t lock_owner; 662 }; 663 664 struct fuse_read_in { 665 uint64_t fh; 666 uint64_t offset; 667 uint32_t size; 668 uint32_t read_flags; 669 uint64_t lock_owner; 670 uint32_t flags; 671 uint32_t padding; 672 }; 673 674 #define FUSE_COMPAT_WRITE_IN_SIZE 24 675 676 struct fuse_write_in { 677 uint64_t fh; 678 uint64_t offset; 679 uint32_t size; 680 uint32_t write_flags; 681 uint64_t lock_owner; 682 uint32_t flags; 683 uint32_t padding; 684 }; 685 686 struct fuse_write_out { 687 uint32_t size; 688 uint32_t padding; 689 }; 690 691 #define FUSE_COMPAT_STATFS_SIZE 48 692 693 struct fuse_statfs_out { 694 struct fuse_kstatfs st; 695 }; 696 697 struct fuse_fsync_in { 698 uint64_t fh; 699 uint32_t fsync_flags; 700 uint32_t padding; 701 }; 702 703 #define FUSE_COMPAT_SETXATTR_IN_SIZE 8 704 705 struct fuse_setxattr_in { 706 uint32_t size; 707 uint32_t flags; 708 uint32_t setxattr_flags; 709 uint32_t padding; 710 }; 711 712 struct fuse_getxattr_in { 713 uint32_t size; 714 uint32_t padding; 715 }; 716 717 struct fuse_getxattr_out { 718 uint32_t size; 719 uint32_t padding; 720 }; 721 722 struct fuse_lk_in { 723 uint64_t fh; 724 uint64_t owner; 725 struct fuse_file_lock lk; 726 uint32_t lk_flags; 727 uint32_t padding; 728 }; 729 730 struct fuse_lk_out { 731 struct fuse_file_lock lk; 732 }; 733 734 struct fuse_access_in { 735 uint32_t mask; 736 uint32_t padding; 737 }; 738 739 struct fuse_init_in { 740 uint32_t major; 741 uint32_t minor; 742 uint32_t max_readahead; 743 uint32_t flags; 744 }; 745 746 #define FUSE_COMPAT_INIT_OUT_SIZE 8 747 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24 748 749 struct fuse_init_out { 750 uint32_t major; 751 uint32_t minor; 752 uint32_t max_readahead; 753 uint32_t flags; 754 uint16_t max_background; 755 uint16_t congestion_threshold; 756 uint32_t max_write; 757 uint32_t time_gran; 758 uint16_t max_pages; 759 uint16_t map_alignment; 760 uint32_t unused[8]; 761 }; 762 763 #define CUSE_INIT_INFO_MAX 4096 764 765 struct cuse_init_in { 766 uint32_t major; 767 uint32_t minor; 768 uint32_t unused; 769 uint32_t flags; 770 }; 771 772 struct cuse_init_out { 773 uint32_t major; 774 uint32_t minor; 775 uint32_t unused; 776 uint32_t flags; 777 uint32_t max_read; 778 uint32_t max_write; 779 uint32_t dev_major; /* chardev major */ 780 uint32_t dev_minor; /* chardev minor */ 781 uint32_t spare[10]; 782 }; 783 784 struct fuse_interrupt_in { 785 uint64_t unique; 786 }; 787 788 struct fuse_bmap_in { 789 uint64_t block; 790 uint32_t blocksize; 791 uint32_t padding; 792 }; 793 794 struct fuse_bmap_out { 795 uint64_t block; 796 }; 797 798 struct fuse_ioctl_in { 799 uint64_t fh; 800 uint32_t flags; 801 uint32_t cmd; 802 uint64_t arg; 803 uint32_t in_size; 804 uint32_t out_size; 805 }; 806 807 struct fuse_ioctl_iovec { 808 uint64_t base; 809 uint64_t len; 810 }; 811 812 struct fuse_ioctl_out { 813 int32_t result; 814 uint32_t flags; 815 uint32_t in_iovs; 816 uint32_t out_iovs; 817 }; 818 819 struct fuse_poll_in { 820 uint64_t fh; 821 uint64_t kh; 822 uint32_t flags; 823 uint32_t events; 824 }; 825 826 struct fuse_poll_out { 827 uint32_t revents; 828 uint32_t padding; 829 }; 830 831 struct fuse_notify_poll_wakeup_out { 832 uint64_t kh; 833 }; 834 835 struct fuse_fallocate_in { 836 uint64_t fh; 837 uint64_t offset; 838 uint64_t length; 839 uint32_t mode; 840 uint32_t padding; 841 }; 842 843 struct fuse_in_header { 844 uint32_t len; 845 uint32_t opcode; 846 uint64_t unique; 847 uint64_t nodeid; 848 uint32_t uid; 849 uint32_t gid; 850 uint32_t pid; 851 uint32_t padding; 852 }; 853 854 struct fuse_out_header { 855 uint32_t len; 856 int32_t error; 857 uint64_t unique; 858 }; 859 860 struct fuse_dirent { 861 uint64_t ino; 862 uint64_t off; 863 uint32_t namelen; 864 uint32_t type; 865 char name[]; 866 }; 867 868 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 869 #define FUSE_DIRENT_ALIGN(x) \ 870 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 871 #define FUSE_DIRENT_SIZE(d) \ 872 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 873 874 struct fuse_direntplus { 875 struct fuse_entry_out entry_out; 876 struct fuse_dirent dirent; 877 }; 878 879 #define FUSE_NAME_OFFSET_DIRENTPLUS \ 880 offsetof(struct fuse_direntplus, dirent.name) 881 #define FUSE_DIRENTPLUS_SIZE(d) \ 882 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) 883 884 struct fuse_notify_inval_inode_out { 885 uint64_t ino; 886 int64_t off; 887 int64_t len; 888 }; 889 890 struct fuse_notify_inval_entry_out { 891 uint64_t parent; 892 uint32_t namelen; 893 uint32_t padding; 894 }; 895 896 struct fuse_notify_delete_out { 897 uint64_t parent; 898 uint64_t child; 899 uint32_t namelen; 900 uint32_t padding; 901 }; 902 903 struct fuse_notify_store_out { 904 uint64_t nodeid; 905 uint64_t offset; 906 uint32_t size; 907 uint32_t padding; 908 }; 909 910 struct fuse_notify_retrieve_out { 911 uint64_t notify_unique; 912 uint64_t nodeid; 913 uint64_t offset; 914 uint32_t size; 915 uint32_t padding; 916 }; 917 918 /* Matches the size of fuse_write_in */ 919 struct fuse_notify_retrieve_in { 920 uint64_t dummy1; 921 uint64_t offset; 922 uint32_t size; 923 uint32_t dummy2; 924 uint64_t dummy3; 925 uint64_t dummy4; 926 }; 927 928 /* Device ioctls: */ 929 #define FUSE_DEV_IOC_MAGIC 229 930 #define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t) 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