1 /* $NetBSD: fuse.h,v 1.8 2021/09/17 08:13:06 andvar Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Emmanuel Dreyfus. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef _FUSE_H 29 #define _FUSE_H 30 31 #define FUSE_KERNEL_VERSION 7 32 #define FUSE_KERNEL_MINOR_VERSION 12 33 #define FUSE_ROOT_ID 1 34 #define FUSE_UNKNOWN_FH (uint64_t)0 35 36 #ifndef FUSE_BUFSIZE 37 #define FUSE_MIN_BUFSIZE ((size_t)0x21000) 38 #define FUSE_PREF_BUFSIZE ((size_t)(sysconf(_SC_PAGESIZE) + 0x1000)) 39 #define FUSE_BUFSIZE MAX(FUSE_PREF_BUFSIZE /* CONSTCOND */, FUSE_MIN_BUFSIZE) 40 #endif /* FUSE_BUFSIZE */ 41 42 /* From <linux/limits.h> */ 43 #define LINUX_XATTR_NAME_MAX 255 44 #define LINUX_XATTR_SIZE_MAX 65536 45 #define LINUX_XATTR_LIST_MAX 65536 46 47 struct fuse_attr { 48 uint64_t ino; 49 uint64_t size; 50 uint64_t blocks; 51 uint64_t atime; 52 uint64_t mtime; 53 uint64_t ctime; 54 uint32_t atimensec; 55 uint32_t mtimensec; 56 uint32_t ctimensec; 57 uint32_t mode; 58 uint32_t nlink; 59 uint32_t uid; 60 uint32_t gid; 61 uint32_t rdev; 62 uint32_t blksize; 63 uint32_t padding; 64 }; 65 66 struct fuse_kstatfs { 67 uint64_t blocks; 68 uint64_t bfree; 69 uint64_t bavail; 70 uint64_t files; 71 uint64_t ffree; 72 uint32_t bsize; 73 uint32_t namelen; 74 uint32_t frsize; 75 uint32_t padding; 76 uint32_t spare[6]; 77 }; 78 79 struct fuse_file_lock { 80 uint64_t start; 81 uint64_t end; 82 uint32_t type; 83 uint32_t pid; 84 }; 85 86 /* 87 * Various flags 88 */ 89 #define FUSE_FATTR_MODE 0x0001 90 #define FUSE_FATTR_UID 0x0002 91 #define FUSE_FATTR_GID 0x0004 92 #define FUSE_FATTR_SIZE 0x0008 93 #define FUSE_FATTR_ATIME 0x0010 94 #define FUSE_FATTR_MTIME 0x0020 95 #define FUSE_FATTR_FH 0x0040 96 #define FUSE_FATTR_ATIME_NOW 0x0080 97 #define FUSE_FATTR_MTIME_NOW 0x0100 98 #define FUSE_FATTR_LOCKOWNER 0x0200 99 100 #define FUSE_FOPEN_DIRECT_IO 0x0001 101 #define FUSE_FOPEN_KEEP_CACHE 0x0002 102 #define FUSE_FOPEN_NONSEEKABLE 0x0004 103 104 #define FUSE_ASYNC_READ 0x0001 105 #define FUSE_POSIX_LOCKS 0x0002 106 #define FUSE_FILE_OPS 0x0004 107 #define FUSE_ATOMIC_O_TRUNC 0x0008 108 #define FUSE_EXPORT_SUPPORT 0x0010 109 #define FUSE_BIG_WRITES 0x0020 110 #define FUSE_DONT_MASK 0x0040 111 112 #define FUSE_CUSE_UNRESTRICTED_IOCTL 0x0001 113 114 #define FUSE_RELEASE_FLUSH 0x0001 115 116 #define FUSE_GETATTR_FH 0x0001 117 118 #define FUSE_LK_FLOCK 0x0001 119 120 #define FUSE_WRITE_CACHE 0x0001 121 #define FUSE_WRITE_LOCKOWNER 0x0002 122 123 #define FUSE_READ_LOCKOWNER 0x0002 124 125 #define FUSE_IOCTL_COMPAT 0x0001 126 #define FUSE_IOCTL_UNRESTRICTED 0x0002 127 #define FUSE_IOCTL_RETRY 0x0004 128 129 #define FUSE_IOCTL_MAX_IOV 256 130 131 #define FUSE_POLL_SCHEDULE_NOTIFY 0x0001 132 133 enum fuse_opcode { 134 FUSE_LOOKUP = 1, 135 FUSE_FORGET = 2, 136 FUSE_GETATTR = 3, 137 FUSE_SETATTR = 4, 138 FUSE_READLINK = 5, 139 FUSE_SYMLINK = 6, 140 FUSE_MKNOD = 8, 141 FUSE_MKDIR = 9, 142 FUSE_UNLINK = 10, 143 FUSE_RMDIR = 11, 144 FUSE_RENAME = 12, 145 FUSE_LINK = 13, 146 FUSE_OPEN = 14, 147 FUSE_READ = 15, 148 FUSE_WRITE = 16, 149 FUSE_STATFS = 17, 150 FUSE_RELEASE = 18, 151 FUSE_FSYNC = 20, 152 FUSE_SETXATTR = 21, 153 FUSE_GETXATTR = 22, 154 FUSE_LISTXATTR = 23, 155 FUSE_REMOVEXATTR = 24, 156 FUSE_FLUSH = 25, 157 FUSE_INIT = 26, 158 FUSE_OPENDIR = 27, 159 FUSE_READDIR = 28, 160 FUSE_RELEASEDIR = 29, 161 FUSE_FSYNCDIR = 30, 162 FUSE_GETLK = 31, 163 FUSE_SETLK = 32, 164 FUSE_SETLKW = 33, 165 FUSE_ACCESS = 34, 166 FUSE_CREATE = 35, 167 FUSE_INTERRUPT = 36, 168 FUSE_BMAP = 37, 169 FUSE_DESTROY = 38, 170 FUSE_IOCTL = 39, 171 FUSE_POLL = 40, 172 FUSE_NOTIFY_REPLY = 41, 173 FUSE_BATCH_FORGET = 42, 174 FUSE_FALLOCATE = 43, 175 FUSE_OPCODE_MAX, 176 177 FUSE_CUSE_INIT = 4096 178 }; 179 180 enum fuse_notify_code { 181 FUSE_NOTIFY_POLL = 1, 182 FUSE_NOTIFY_INVAL_INODE = 2, 183 FUSE_NOTIFY_INVAL_ENTRY = 3, 184 FUSE_NOTIFY_CODE_MAX 185 }; 186 187 #define FUSE_MIN_READ_BUFFER 8192 188 189 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 190 191 struct fuse_entry_out { 192 uint64_t nodeid; 193 uint64_t generation; 194 uint64_t entry_valid; 195 uint64_t attr_valid; 196 uint32_t entry_valid_nsec; 197 uint32_t attr_valid_nsec; 198 struct fuse_attr attr; 199 }; 200 201 struct fuse_forget_in { 202 uint64_t nlookup; 203 }; 204 205 struct fuse_getattr_in { 206 uint32_t getattr_flags; 207 uint32_t dummy; 208 uint64_t fh; 209 }; 210 211 #define FUSE_COMPAT_ATTR_OUT_SIZE 96 212 213 struct fuse_attr_out { 214 uint64_t attr_valid; 215 uint32_t attr_valid_nsec; 216 uint32_t dummy; 217 struct fuse_attr attr; 218 }; 219 220 #define FUSE_COMPAT_MKNOD_IN_SIZE 8 221 222 struct fuse_mknod_in { 223 uint32_t mode; 224 uint32_t rdev; 225 uint32_t umask; 226 uint32_t padding; 227 }; 228 229 struct fuse_mkdir_in { 230 uint32_t mode; 231 uint32_t umask; 232 }; 233 234 struct fuse_rename_in { 235 uint64_t newdir; 236 }; 237 238 struct fuse_link_in { 239 uint64_t oldnodeid; 240 }; 241 242 struct fuse_setattr_in { 243 uint32_t valid; 244 uint32_t padding; 245 uint64_t fh; 246 uint64_t size; 247 uint64_t lock_owner; 248 uint64_t atime; 249 uint64_t mtime; 250 uint64_t unused2; 251 uint32_t atimensec; 252 uint32_t mtimensec; 253 uint32_t unused3; 254 uint32_t mode; 255 uint32_t unused4; 256 uint32_t uid; 257 uint32_t gid; 258 uint32_t unused5; 259 }; 260 261 struct fuse_open_in { 262 uint32_t flags; 263 uint32_t unused; 264 }; 265 266 struct fuse_create_in { 267 uint32_t flags; 268 uint32_t mode; 269 uint32_t umask; 270 uint32_t padding; 271 }; 272 273 struct fuse_open_out { 274 uint64_t fh; 275 uint32_t open_flags; /* FUSE_FOPEN_ */ 276 uint32_t padding; 277 }; 278 279 struct fuse_release_in { 280 uint64_t fh; 281 uint32_t flags; 282 uint32_t release_flags; 283 uint64_t lock_owner; 284 }; 285 286 struct fuse_flush_in { 287 uint64_t fh; 288 uint32_t unused; 289 uint32_t padding; 290 uint64_t lock_owner; 291 }; 292 293 struct fuse_read_in { 294 uint64_t fh; 295 uint64_t offset; 296 uint32_t size; 297 uint32_t read_flags; 298 uint64_t lock_owner; 299 uint32_t flags; 300 uint32_t padding; 301 }; 302 303 #define FUSE_COMPAT_WRITE_IN_SIZE 24 304 305 struct fuse_write_in { 306 uint64_t fh; 307 uint64_t offset; 308 uint32_t size; 309 uint32_t write_flags; 310 uint64_t lock_owner; 311 uint32_t flags; 312 uint32_t padding; 313 }; 314 315 struct fuse_write_out { 316 uint32_t size; 317 uint32_t padding; 318 }; 319 320 #define FUSE_COMPAT_STATFS_SIZE 48 321 322 struct fuse_statfs_out { 323 struct fuse_kstatfs st; 324 }; 325 326 struct fuse_fsync_in { 327 uint64_t fh; 328 uint32_t fsync_flags; 329 uint32_t padding; 330 }; 331 332 struct fuse_setxattr_in { 333 uint32_t size; 334 uint32_t flags; 335 }; 336 337 struct fuse_getxattr_in { 338 uint32_t size; 339 uint32_t padding; 340 }; 341 342 struct fuse_getxattr_out { 343 uint32_t size; 344 uint32_t padding; 345 }; 346 347 struct fuse_lk_in { 348 uint64_t fh; 349 uint64_t owner; 350 struct fuse_file_lock lk; 351 uint32_t lk_flags; 352 uint32_t padding; 353 }; 354 355 struct fuse_lk_out { 356 struct fuse_file_lock lk; 357 }; 358 359 struct fuse_access_in { 360 uint32_t mask; 361 uint32_t padding; 362 }; 363 364 struct fuse_init_in { 365 uint32_t major; 366 uint32_t minor; 367 uint32_t max_readahead; 368 uint32_t flags; 369 }; 370 371 struct fuse_init_out { 372 uint32_t major; 373 uint32_t minor; 374 uint32_t max_readahead; 375 uint32_t flags; 376 uint32_t unused; 377 uint32_t max_write; 378 }; 379 380 #define FUSE_CUSE_INIT_INFO_MAX 4096 381 382 struct fuse_cuse_init_in { 383 uint32_t major; 384 uint32_t minor; 385 uint32_t unused; 386 uint32_t flags; 387 }; 388 389 struct fuse_cuse_init_out { 390 uint32_t major; 391 uint32_t minor; 392 uint32_t unused; 393 uint32_t flags; 394 uint32_t max_read; 395 uint32_t max_write; 396 uint32_t dev_major; /* chardev major */ 397 uint32_t dev_minor; /* chardev minor */ 398 uint32_t spare[10]; 399 }; 400 401 struct fuse_interrupt_in { 402 uint64_t unique; 403 }; 404 405 struct fuse_bmap_in { 406 uint64_t block; 407 uint32_t blocksize; 408 uint32_t padding; 409 }; 410 411 struct fuse_bmap_out { 412 uint64_t block; 413 }; 414 415 struct fuse_ioctl_in { 416 uint64_t fh; 417 uint32_t flags; 418 uint32_t cmd; 419 uint64_t arg; 420 uint32_t in_size; 421 uint32_t out_size; 422 }; 423 424 struct fuse_ioctl_out { 425 int32_t result; 426 uint32_t flags; 427 uint32_t in_iovs; 428 uint32_t out_iovs; 429 }; 430 431 struct fuse_poll_in { 432 uint64_t fh; 433 uint64_t kh; 434 uint32_t flags; 435 uint32_t padding; 436 }; 437 438 struct fuse_poll_out { 439 uint32_t revents; 440 uint32_t padding; 441 }; 442 443 struct fuse_notify_poll_wakeup_out { 444 uint64_t kh; 445 }; 446 447 struct fuse_fallocate_in { 448 uint64_t fh; 449 uint64_t offset; 450 uint64_t length; 451 uint32_t mode; 452 uint32_t padding; 453 }; 454 455 #if 0 /* Duplicated in perfuse.h to avoid making fuse.h public */ 456 /* Send from kernel to process */ 457 struct fuse_in_header { 458 uint32_t len; 459 uint32_t opcode; 460 uint64_t unique; 461 uint64_t nodeid; 462 uint32_t uid; 463 uint32_t gid; 464 uint32_t pid; 465 uint32_t padding; 466 }; 467 468 struct fuse_in_arg { 469 uint32_t size; 470 const void *value; 471 }; 472 473 struct fuse_in { 474 struct fuse_in_header h; 475 uint32_t argpages:1; /* Req fits in a page? Always 1 */ 476 uint32_t numargs; 477 struct fuse_in_arg args[3]; /* args copied to userspace */ 478 }; 479 480 481 /* From process to kernel */ 482 struct fuse_out_header { 483 uint32_t len; 484 int32_t error; 485 uint64_t unique; 486 }; 487 #endif 488 489 struct fuse_dirent { 490 uint64_t ino; 491 uint64_t off; /* offset of next field from after foh */ 492 uint32_t namelen; 493 uint32_t type; 494 char name[0]; 495 }; 496 497 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) 498 #define FUSE_DIRENT_ALIGN(x) \ 499 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) 500 #define FUSE_DIRENT_SIZE(d) \ 501 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) 502 503 struct fuse_notify_inval_inode_out { 504 uint64_t ino; 505 int64_t off; 506 int64_t len; 507 }; 508 509 struct fuse_notify_inval_entry_out { 510 uint64_t parent; 511 uint32_t namelen; 512 uint32_t padding; 513 }; 514 515 #endif /* _FUSE_H */ 516
Indexes created Sat Sep 20 22:09:52 GMT 2025