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