include/standard-headers/linux/fuse.h

   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
 177 #ifndef _LINUX_FUSE_H
 178 #define _LINUX_FUSE_H
 179
 180 #include <stdint.h>
 181
 182 /*
 183  * Version negotiation:
 184  *
 185  * Both the kernel and userspace send the version they support in the
 186  * INIT request and reply respectively.
 187  *
 188  * If the major versions match then both shall use the smallest
 189  * of the two minor versions for communication.
 190  *
 191  * If the kernel supports a larger major version, then userspace shall
 192  * reply with the major version it supports, ignore the rest of the
 193  * INIT message and expect a new INIT message from the kernel with a
 194  * matching major version.
 195  *
 196  * If the library supports a larger major version, then it shall fall
 197  * back to the major protocol version sent by the kernel for
 198  * communication and reply with that major version (and an arbitrary
 199  * supported minor version).
 200  */
 201
 202 /** Version number of this interface */
 203 #define FUSE_KERNEL_VERSION 7
 204
 205 /** Minor version number of this interface */
 206 #define FUSE_KERNEL_MINOR_VERSION 31
 207
 208 /** The node ID of the root inode */
 209 #define FUSE_ROOT_ID 1
 210
 211 /* Make sure all structures are padded to 64bit boundary, so 32bit
 212    userspace works under 64bit kernels */
 213
 214 struct fuse_attr {
 215         uint64_t        ino;
 216         uint64_t        size;
 217         uint64_t        blocks;
 218         uint64_t        atime;
 219         uint64_t        mtime;
 220         uint64_t        ctime;
 221         uint32_t        atimensec;
 222         uint32_t        mtimensec;
 223         uint32_t        ctimensec;
 224         uint32_t        mode;
 225         uint32_t        nlink;
 226         uint32_t        uid;
 227         uint32_t        gid;
 228         uint32_t        rdev;
 229         uint32_t        blksize;
 230         uint32_t        padding;
 231 };
 232
 233 struct fuse_kstatfs {
 234         uint64_t        blocks;
 235         uint64_t        bfree;
 236         uint64_t        bavail;
 237         uint64_t        files;
 238         uint64_t        ffree;
 239         uint32_t        bsize;
 240         uint32_t        namelen;
 241         uint32_t        frsize;
 242         uint32_t        padding;
 243         uint32_t        spare[6];
 244 };
 245
 246 struct fuse_file_lock {
 247         uint64_t        start;
 248         uint64_t        end;
 249         uint32_t        type;
 250         uint32_t        pid; /* tgid */
 251 };
 252
 253 /**
 254  * Bitmasks for fuse_setattr_in.valid
 255  */
 256 #define FATTR_MODE      (1 << 0)
 257 #define FATTR_UID       (1 << 1)
 258 #define FATTR_GID       (1 << 2)
 259 #define FATTR_SIZE      (1 << 3)
 260 #define FATTR_ATIME     (1 << 4)
 261 #define FATTR_MTIME     (1 << 5)
 262 #define FATTR_FH        (1 << 6)
 263 #define FATTR_ATIME_NOW (1 << 7)
 264 #define FATTR_MTIME_NOW (1 << 8)
 265 #define FATTR_LOCKOWNER (1 << 9)
 266 #define FATTR_CTIME     (1 << 10)
 267
 268 /**
 269  * Flags returned by the OPEN request
 270  *
 271  * FOPEN_DIRECT_IO: bypass page cache for this open file
 272  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
 273  * FOPEN_NONSEEKABLE: the file is not seekable
 274  * FOPEN_CACHE_DIR: allow caching this directory
 275  * FOPEN_STREAM: the file is stream-like (no file position at all)
 276  */
 277 #define FOPEN_DIRECT_IO         (1 << 0)
 278 #define FOPEN_KEEP_CACHE        (1 << 1)
 279 #define FOPEN_NONSEEKABLE       (1 << 2)
 280 #define FOPEN_CACHE_DIR         (1 << 3)
 281 #define FOPEN_STREAM            (1 << 4)
 282
 283 /**
 284  * INIT request/reply flags
 285  *
 286  * FUSE_ASYNC_READ: asynchronous read requests
 287  * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
 288  * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
 289  * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
 290  * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
 291  * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
 292  * FUSE_DONT_MASK: don't apply umask to file mode on create operations
 293  * FUSE_SPLICE_WRITE: kernel supports splice write on the device
 294  * FUSE_SPLICE_MOVE: kernel supports splice move on the device
 295  * FUSE_SPLICE_READ: kernel supports splice read on the device
 296  * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
 297  * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
 298  * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
 299  * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
 300  * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
 301  * FUSE_ASYNC_DIO: asynchronous direct I/O submission
 302  * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
 303  * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
 304  * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
 305  * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
 306  * FUSE_POSIX_ACL: filesystem supports posix acls
 307  * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
 308  * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
 309  * FUSE_CACHE_SYMLINKS: cache READLINK responses
 310  * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
 311  * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
 312  * FUSE_MAP_ALIGNMENT: map_alignment field is valid
 313  */
 314 #define FUSE_ASYNC_READ         (1 << 0)
 315 #define FUSE_POSIX_LOCKS        (1 << 1)
 316 #define FUSE_FILE_OPS           (1 << 2)
 317 #define FUSE_ATOMIC_O_TRUNC     (1 << 3)
 318 #define FUSE_EXPORT_SUPPORT     (1 << 4)
 319 #define FUSE_BIG_WRITES         (1 << 5)
 320 #define FUSE_DONT_MASK          (1 << 6)
 321 #define FUSE_SPLICE_WRITE       (1 << 7)
 322 #define FUSE_SPLICE_MOVE        (1 << 8)
 323 #define FUSE_SPLICE_READ        (1 << 9)
 324 #define FUSE_FLOCK_LOCKS        (1 << 10)
 325 #define FUSE_HAS_IOCTL_DIR      (1 << 11)
 326 #define FUSE_AUTO_INVAL_DATA    (1 << 12)
 327 #define FUSE_DO_READDIRPLUS     (1 << 13)
 328 #define FUSE_READDIRPLUS_AUTO   (1 << 14)
 329 #define FUSE_ASYNC_DIO          (1 << 15)
 330 #define FUSE_WRITEBACK_CACHE    (1 << 16)
 331 #define FUSE_NO_OPEN_SUPPORT    (1 << 17)
 332 #define FUSE_PARALLEL_DIROPS    (1 << 18)
 333 #define FUSE_HANDLE_KILLPRIV    (1 << 19)
 334 #define FUSE_POSIX_ACL          (1 << 20)
 335 #define FUSE_ABORT_ERROR        (1 << 21)
 336 #define FUSE_MAX_PAGES          (1 << 22)
 337 #define FUSE_CACHE_SYMLINKS     (1 << 23)
 338 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
 339 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
 340 #define FUSE_MAP_ALIGNMENT      (1 << 26)
 341
 342 /**
 343  * CUSE INIT request/reply flags
 344  *
 345  * CUSE_UNRESTRICTED_IOCTL:  use unrestricted ioctl
 346  */
 347 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
 348
 349 /**
 350  * Release flags
 351  */
 352 #define FUSE_RELEASE_FLUSH      (1 << 0)
 353 #define FUSE_RELEASE_FLOCK_UNLOCK       (1 << 1)
 354
 355 /**
 356  * Getattr flags
 357  */
 358 #define FUSE_GETATTR_FH         (1 << 0)
 359
 360 /**
 361  * Lock flags
 362  */
 363 #define FUSE_LK_FLOCK           (1 << 0)
 364
 365 /**
 366  * WRITE flags
 367  *
 368  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
 369  * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
 370  * FUSE_WRITE_KILL_PRIV: kill suid and sgid bits
 371  */
 372 #define FUSE_WRITE_CACHE        (1 << 0)
 373 #define FUSE_WRITE_LOCKOWNER    (1 << 1)
 374 #define FUSE_WRITE_KILL_PRIV    (1 << 2)
 375
 376 /**
 377  * Read flags
 378  */
 379 #define FUSE_READ_LOCKOWNER     (1 << 1)
 380
 381 /**
 382  * Ioctl flags
 383  *
 384  * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
 385  * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
 386  * FUSE_IOCTL_RETRY: retry with new iovecs
 387  * FUSE_IOCTL_32BIT: 32bit ioctl
 388  * FUSE_IOCTL_DIR: is a directory
 389  * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
 390  *
 391  * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
 392  */
 393 #define FUSE_IOCTL_COMPAT       (1 << 0)
 394 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
 395 #define FUSE_IOCTL_RETRY        (1 << 2)
 396 #define FUSE_IOCTL_32BIT        (1 << 3)
 397 #define FUSE_IOCTL_DIR          (1 << 4)
 398 #define FUSE_IOCTL_COMPAT_X32   (1 << 5)
 399
 400 #define FUSE_IOCTL_MAX_IOV      256
 401
 402 /**
 403  * Poll flags
 404  *
 405  * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
 406  */
 407 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
 408
 409 /**
 410  * Fsync flags
 411  *
 412  * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
 413  */
 414 #define FUSE_FSYNC_FDATASYNC    (1 << 0)
 415
 416 enum fuse_opcode {
 417         FUSE_LOOKUP             = 1,
 418         FUSE_FORGET             = 2,  /* no reply */
 419         FUSE_GETATTR            = 3,
 420         FUSE_SETATTR            = 4,
 421         FUSE_READLINK           = 5,
 422         FUSE_SYMLINK            = 6,
 423         FUSE_MKNOD              = 8,
 424         FUSE_MKDIR              = 9,
 425         FUSE_UNLINK             = 10,
 426         FUSE_RMDIR              = 11,
 427         FUSE_RENAME             = 12,
 428         FUSE_LINK               = 13,
 429         FUSE_OPEN               = 14,
 430         FUSE_READ               = 15,
 431         FUSE_WRITE              = 16,
 432         FUSE_STATFS             = 17,
 433         FUSE_RELEASE            = 18,
 434         FUSE_FSYNC              = 20,
 435         FUSE_SETXATTR           = 21,
 436         FUSE_GETXATTR           = 22,
 437         FUSE_LISTXATTR          = 23,
 438         FUSE_REMOVEXATTR        = 24,
 439         FUSE_FLUSH              = 25,
 440         FUSE_INIT               = 26,
 441         FUSE_OPENDIR            = 27,
 442         FUSE_READDIR            = 28,
 443         FUSE_RELEASEDIR         = 29,
 444         FUSE_FSYNCDIR           = 30,
 445         FUSE_GETLK              = 31,
 446         FUSE_SETLK              = 32,
 447         FUSE_SETLKW             = 33,
 448         FUSE_ACCESS             = 34,
 449         FUSE_CREATE             = 35,
 450         FUSE_INTERRUPT          = 36,
 451         FUSE_BMAP               = 37,
 452         FUSE_DESTROY            = 38,
 453         FUSE_IOCTL              = 39,
 454         FUSE_POLL               = 40,
 455         FUSE_NOTIFY_REPLY       = 41,
 456         FUSE_BATCH_FORGET       = 42,
 457         FUSE_FALLOCATE          = 43,
 458         FUSE_READDIRPLUS        = 44,
 459         FUSE_RENAME2            = 45,
 460         FUSE_LSEEK              = 46,
 461         FUSE_COPY_FILE_RANGE    = 47,
 462         FUSE_SETUPMAPPING       = 48,
 463         FUSE_REMOVEMAPPING      = 49,
 464
 465         /* CUSE specific operations */
 466         CUSE_INIT               = 4096,
 467
 468         /* Reserved opcodes: helpful to detect structure endian-ness */
 469         CUSE_INIT_BSWAP_RESERVED        = 1048576,      /* CUSE_INIT << 8 */
 470         FUSE_INIT_BSWAP_RESERVED        = 436207616,    /* FUSE_INIT << 24 */
 471 };
 472
 473 enum fuse_notify_code {
 474         FUSE_NOTIFY_POLL   = 1,
 475         FUSE_NOTIFY_INVAL_INODE = 2,
 476         FUSE_NOTIFY_INVAL_ENTRY = 3,
 477         FUSE_NOTIFY_STORE = 4,
 478         FUSE_NOTIFY_RETRIEVE = 5,
 479         FUSE_NOTIFY_DELETE = 6,
 480         FUSE_NOTIFY_CODE_MAX,
 481 };
 482
 483 /* The read buffer is required to be at least 8k, but may be much larger */
 484 #define FUSE_MIN_READ_BUFFER 8192
 485
 486 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
 487
 488 struct fuse_entry_out {
 489         uint64_t        nodeid;         /* Inode ID */
 490         uint64_t        generation;     /* Inode generation: nodeid:gen must
 491                                            be unique for the fs's lifetime */
 492         uint64_t        entry_valid;    /* Cache timeout for the name */
 493         uint64_t        attr_valid;     /* Cache timeout for the attributes */
 494         uint32_t        entry_valid_nsec;
 495         uint32_t        attr_valid_nsec;
 496         struct fuse_attr attr;
 497 };
 498
 499 struct fuse_forget_in {
 500         uint64_t        nlookup;
 501 };
 502
 503 struct fuse_forget_one {
 504         uint64_t        nodeid;
 505         uint64_t        nlookup;
 506 };
 507
 508 struct fuse_batch_forget_in {
 509         uint32_t        count;
 510         uint32_t        dummy;
 511 };
 512
 513 struct fuse_getattr_in {
 514         uint32_t        getattr_flags;
 515         uint32_t        dummy;
 516         uint64_t        fh;
 517 };
 518
 519 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
 520
 521 struct fuse_attr_out {
 522         uint64_t        attr_valid;     /* Cache timeout for the attributes */
 523         uint32_t        attr_valid_nsec;
 524         uint32_t        dummy;
 525         struct fuse_attr attr;
 526 };
 527
 528 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
 529
 530 struct fuse_mknod_in {
 531         uint32_t        mode;
 532         uint32_t        rdev;
 533         uint32_t        umask;
 534         uint32_t        padding;
 535 };
 536
 537 struct fuse_mkdir_in {
 538         uint32_t        mode;
 539         uint32_t        umask;
 540 };
 541
 542 struct fuse_rename_in {
 543         uint64_t        newdir;
 544 };
 545
 546 struct fuse_rename2_in {
 547         uint64_t        newdir;
 548         uint32_t        flags;
 549         uint32_t        padding;
 550 };
 551
 552 struct fuse_link_in {
 553         uint64_t        oldnodeid;
 554 };
 555
 556 struct fuse_setattr_in {
 557         uint32_t        valid;
 558         uint32_t        padding;
 559         uint64_t        fh;
 560         uint64_t        size;
 561         uint64_t        lock_owner;
 562         uint64_t        atime;
 563         uint64_t        mtime;
 564         uint64_t        ctime;
 565         uint32_t        atimensec;
 566         uint32_t        mtimensec;
 567         uint32_t        ctimensec;
 568         uint32_t        mode;
 569         uint32_t        unused4;
 570         uint32_t        uid;
 571         uint32_t        gid;
 572         uint32_t        unused5;
 573 };
 574
 575 struct fuse_open_in {
 576         uint32_t        flags;
 577         uint32_t        unused;
 578 };
 579
 580 struct fuse_create_in {
 581         uint32_t        flags;
 582         uint32_t        mode;
 583         uint32_t        umask;
 584         uint32_t        padding;
 585 };
 586
 587 struct fuse_open_out {
 588         uint64_t        fh;
 589         uint32_t        open_flags;
 590         uint32_t        padding;
 591 };
 592
 593 struct fuse_release_in {
 594         uint64_t        fh;
 595         uint32_t        flags;
 596         uint32_t        release_flags;
 597         uint64_t        lock_owner;
 598 };
 599
 600 struct fuse_flush_in {
 601         uint64_t        fh;
 602         uint32_t        unused;
 603         uint32_t        padding;
 604         uint64_t        lock_owner;
 605 };
 606
 607 struct fuse_read_in {
 608         uint64_t        fh;
 609         uint64_t        offset;
 610         uint32_t        size;
 611         uint32_t        read_flags;
 612         uint64_t        lock_owner;
 613         uint32_t        flags;
 614         uint32_t        padding;
 615 };
 616
 617 #define FUSE_COMPAT_WRITE_IN_SIZE 24
 618
 619 struct fuse_write_in {
 620         uint64_t        fh;
 621         uint64_t        offset;
 622         uint32_t        size;
 623         uint32_t        write_flags;
 624         uint64_t        lock_owner;
 625         uint32_t        flags;
 626         uint32_t        padding;
 627 };
 628
 629 struct fuse_write_out {
 630         uint32_t        size;
 631         uint32_t        padding;
 632 };
 633
 634 #define FUSE_COMPAT_STATFS_SIZE 48
 635
 636 struct fuse_statfs_out {
 637         struct fuse_kstatfs st;
 638 };
 639
 640 struct fuse_fsync_in {
 641         uint64_t        fh;
 642         uint32_t        fsync_flags;
 643         uint32_t        padding;
 644 };
 645
 646 struct fuse_setxattr_in {
 647         uint32_t        size;
 648         uint32_t        flags;
 649 };
 650
 651 struct fuse_getxattr_in {
 652         uint32_t        size;
 653         uint32_t        padding;
 654 };
 655
 656 struct fuse_getxattr_out {
 657         uint32_t        size;
 658         uint32_t        padding;
 659 };
 660
 661 struct fuse_lk_in {
 662         uint64_t        fh;
 663         uint64_t        owner;
 664         struct fuse_file_lock lk;
 665         uint32_t        lk_flags;
 666         uint32_t        padding;
 667 };
 668
 669 struct fuse_lk_out {
 670         struct fuse_file_lock lk;
 671 };
 672
 673 struct fuse_access_in {
 674         uint32_t        mask;
 675         uint32_t        padding;
 676 };
 677
 678 struct fuse_init_in {
 679         uint32_t        major;
 680         uint32_t        minor;
 681         uint32_t        max_readahead;
 682         uint32_t        flags;
 683 };
 684
 685 #define FUSE_COMPAT_INIT_OUT_SIZE 8
 686 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
 687
 688 struct fuse_init_out {
 689         uint32_t        major;
 690         uint32_t        minor;
 691         uint32_t        max_readahead;
 692         uint32_t        flags;
 693         uint16_t        max_background;
 694         uint16_t        congestion_threshold;
 695         uint32_t        max_write;
 696         uint32_t        time_gran;
 697         uint16_t        max_pages;
 698         uint16_t        map_alignment;
 699         uint32_t        unused[8];
 700 };
 701
 702 #define CUSE_INIT_INFO_MAX 4096
 703
 704 struct cuse_init_in {
 705         uint32_t        major;
 706         uint32_t        minor;
 707         uint32_t        unused;
 708         uint32_t        flags;
 709 };
 710
 711 struct cuse_init_out {
 712         uint32_t        major;
 713         uint32_t        minor;
 714         uint32_t        unused;
 715         uint32_t        flags;
 716         uint32_t        max_read;
 717         uint32_t        max_write;
 718         uint32_t        dev_major;              /* chardev major */
 719         uint32_t        dev_minor;              /* chardev minor */
 720         uint32_t        spare[10];
 721 };
 722
 723 struct fuse_interrupt_in {
 724         uint64_t        unique;
 725 };
 726
 727 struct fuse_bmap_in {
 728         uint64_t        block;
 729         uint32_t        blocksize;
 730         uint32_t        padding;
 731 };
 732
 733 struct fuse_bmap_out {
 734         uint64_t        block;
 735 };
 736
 737 struct fuse_ioctl_in {
 738         uint64_t        fh;
 739         uint32_t        flags;
 740         uint32_t        cmd;
 741         uint64_t        arg;
 742         uint32_t        in_size;
 743         uint32_t        out_size;
 744 };
 745
 746 struct fuse_ioctl_iovec {
 747         uint64_t        base;
 748         uint64_t        len;
 749 };
 750
 751 struct fuse_ioctl_out {
 752         int32_t         result;
 753         uint32_t        flags;
 754         uint32_t        in_iovs;
 755         uint32_t        out_iovs;
 756 };
 757
 758 struct fuse_poll_in {
 759         uint64_t        fh;
 760         uint64_t        kh;
 761         uint32_t        flags;
 762         uint32_t        events;
 763 };
 764
 765 struct fuse_poll_out {
 766         uint32_t        revents;
 767         uint32_t        padding;
 768 };
 769
 770 struct fuse_notify_poll_wakeup_out {
 771         uint64_t        kh;
 772 };
 773
 774 struct fuse_fallocate_in {
 775         uint64_t        fh;
 776         uint64_t        offset;
 777         uint64_t        length;
 778         uint32_t        mode;
 779         uint32_t        padding;
 780 };
 781
 782 struct fuse_in_header {
 783         uint32_t        len;
 784         uint32_t        opcode;
 785         uint64_t        unique;
 786         uint64_t        nodeid;
 787         uint32_t        uid;
 788         uint32_t        gid;
 789         uint32_t        pid;
 790         uint32_t        padding;
 791 };
 792
 793 struct fuse_out_header {
 794         uint32_t        len;
 795         int32_t         error;
 796         uint64_t        unique;
 797 };
 798
 799 struct fuse_dirent {
 800         uint64_t        ino;
 801         uint64_t        off;
 802         uint32_t        namelen;
 803         uint32_t        type;
 804         char name[];
 805 };
 806
 807 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
 808 #define FUSE_DIRENT_ALIGN(x) \
 809         (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
 810 #define FUSE_DIRENT_SIZE(d) \
 811         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
 812
 813 struct fuse_direntplus {
 814         struct fuse_entry_out entry_out;
 815         struct fuse_dirent dirent;
 816 };
 817
 818 #define FUSE_NAME_OFFSET_DIRENTPLUS \
 819         offsetof(struct fuse_direntplus, dirent.name)
 820 #define FUSE_DIRENTPLUS_SIZE(d) \
 821         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
 822
 823 struct fuse_notify_inval_inode_out {
 824         uint64_t        ino;
 825         int64_t         off;
 826         int64_t         len;
 827 };
 828
 829 struct fuse_notify_inval_entry_out {
 830         uint64_t        parent;
 831         uint32_t        namelen;
 832         uint32_t        padding;
 833 };
 834
 835 struct fuse_notify_delete_out {
 836         uint64_t        parent;
 837         uint64_t        child;
 838         uint32_t        namelen;
 839         uint32_t        padding;
 840 };
 841
 842 struct fuse_notify_store_out {
 843         uint64_t        nodeid;
 844         uint64_t        offset;
 845         uint32_t        size;
 846         uint32_t        padding;
 847 };
 848
 849 struct fuse_notify_retrieve_out {
 850         uint64_t        notify_unique;
 851         uint64_t        nodeid;
 852         uint64_t        offset;
 853         uint32_t        size;
 854         uint32_t        padding;
 855 };
 856
 857 /* Matches the size of fuse_write_in */
 858 struct fuse_notify_retrieve_in {
 859         uint64_t        dummy1;
 860         uint64_t        offset;
 861         uint32_t        size;
 862         uint32_t        dummy2;
 863         uint64_t        dummy3;
 864         uint64_t        dummy4;
 865 };
 866
 867 /* Device ioctls: */
 868 #define FUSE_DEV_IOC_CLONE      _IOR(229, 0, uint32_t)
 869
 870 struct fuse_lseek_in {
 871         uint64_t        fh;
 872         uint64_t        offset;
 873         uint32_t        whence;
 874         uint32_t        padding;
 875 };
 876
 877 struct fuse_lseek_out {
 878         uint64_t        offset;
 879 };
 880
 881 struct fuse_copy_file_range_in {
 882         uint64_t        fh_in;
 883         uint64_t        off_in;
 884         uint64_t        nodeid_out;
 885         uint64_t        fh_out;
 886         uint64_t        off_out;
 887         uint64_t        len;
 888         uint64_t        flags;
 889 };
 890
 891 #endif /* _LINUX_FUSE_H */