include/uapi/linux/fuse.h

   1 /*
   2     This file defines the kernel interface of FUSE
   3     Copyright (C) 2001-2008  Miklos Szeredi <miklos@szeredi.hu>
   4
   5     This program can be distributed under the terms of the GNU GPL.
   6     See the file COPYING.
   7
   8     This -- and only this -- header file may also be distributed under
   9     the terms of the BSD Licence as follows:
  10
  11     Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
  12
  13     Redistribution and use in source and binary forms, with or without
  14     modification, are permitted provided that the following conditions
  15     are met:
  16     1. Redistributions of source code must retain the above copyright
  17        notice, this list of conditions and the following disclaimer.
  18     2. Redistributions in binary form must reproduce the above copyright
  19        notice, this list of conditions and the following disclaimer in the
  20        documentation and/or other materials provided with the distribution.
  21
  22     THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  23     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25     ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
  26     FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28     OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32     SUCH DAMAGE.
  33 */
  34
  35 /*
  36  * This file defines the kernel interface of FUSE
  37  *
  38  * Protocol changelog:
  39  *
  40  * 7.9:
  41  *  - new fuse_getattr_in input argument of GETATTR
  42  *  - add lk_flags in fuse_lk_in
  43  *  - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
  44  *  - add blksize field to fuse_attr
  45  *  - add file flags field to fuse_read_in and fuse_write_in
  46  *
  47  * 7.10
  48  *  - add nonseekable open flag
  49  *
  50  * 7.11
  51  *  - add IOCTL message
  52  *  - add unsolicited notification support
  53  *  - add POLL message and NOTIFY_POLL notification
  54  *
  55  * 7.12
  56  *  - add umask flag to input argument of open, mknod and mkdir
  57  *  - add notification messages for invalidation of inodes and
  58  *    directory entries
  59  *
  60  * 7.13
  61  *  - make max number of background requests and congestion threshold
  62  *    tunables
  63  *
  64  * 7.14
  65  *  - add splice support to fuse device
  66  *
  67  * 7.15
  68  *  - add store notify
  69  *  - add retrieve notify
  70  *
  71  * 7.16
  72  *  - add BATCH_FORGET request
  73  *  - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
  74  *    fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
  75  *  - add FUSE_IOCTL_32BIT flag
  76  *
  77  * 7.17
  78  *  - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
  79  *
  80  * 7.18
  81  *  - add FUSE_IOCTL_DIR flag
  82  *  - add FUSE_NOTIFY_DELETE
  83  *
  84  * 7.19
  85  *  - add FUSE_FALLOCATE
  86  *
  87  * 7.20
  88  *  - add FUSE_AUTO_INVAL_DATA
  89  *
  90  * 7.21
  91  *  - add FUSE_READDIRPLUS
  92  *  - send the requested events in POLL request
  93  *
  94  * 7.22
  95  *  - add FUSE_ASYNC_DIO
  96  *
  97  * 7.23
  98  *  - add FUSE_WRITEBACK_CACHE
  99  *  - add time_gran to fuse_init_out
 100  *  - add reserved space to fuse_init_out
 101  *  - add FATTR_CTIME
 102  *  - add ctime and ctimensec to fuse_setattr_in
 103  *  - add FUSE_RENAME2 request
 104  */
 105
 106 #ifndef _LINUX_FUSE_H
 107 #define _LINUX_FUSE_H
 108
 109 #ifdef __KERNEL__
 110 #include <linux/types.h>
 111 #else
 112 #include <stdint.h>
 113 #endif
 114
 115 /*
 116  * Version negotiation:
 117  *
 118  * Both the kernel and userspace send the version they support in the
 119  * INIT request and reply respectively.
 120  *
 121  * If the major versions match then both shall use the smallest
 122  * of the two minor versions for communication.
 123  *
 124  * If the kernel supports a larger major version, then userspace shall
 125  * reply with the major version it supports, ignore the rest of the
 126  * INIT message and expect a new INIT message from the kernel with a
 127  * matching major version.
 128  *
 129  * If the library supports a larger major version, then it shall fall
 130  * back to the major protocol version sent by the kernel for
 131  * communication and reply with that major version (and an arbitrary
 132  * supported minor version).
 133  */
 134
 135 /** Version number of this interface */
 136 #define FUSE_KERNEL_VERSION 7
 137
 138 /** Minor version number of this interface */
 139 #define FUSE_KERNEL_MINOR_VERSION 23
 140
 141 /** The node ID of the root inode */
 142 #define FUSE_ROOT_ID 1
 143
 144 /* Make sure all structures are padded to 64bit boundary, so 32bit
 145    userspace works under 64bit kernels */
 146
 147 struct fuse_attr {
 148         uint64_t        ino;
 149         uint64_t        size;
 150         uint64_t        blocks;
 151         uint64_t        atime;
 152         uint64_t        mtime;
 153         uint64_t        ctime;
 154         uint32_t        atimensec;
 155         uint32_t        mtimensec;
 156         uint32_t        ctimensec;
 157         uint32_t        mode;
 158         uint32_t        nlink;
 159         uint32_t        uid;
 160         uint32_t        gid;
 161         uint32_t        rdev;
 162         uint32_t        blksize;
 163         uint32_t        padding;
 164 };
 165
 166 struct fuse_kstatfs {
 167         uint64_t        blocks;
 168         uint64_t        bfree;
 169         uint64_t        bavail;
 170         uint64_t        files;
 171         uint64_t        ffree;
 172         uint32_t        bsize;
 173         uint32_t        namelen;
 174         uint32_t        frsize;
 175         uint32_t        padding;
 176         uint32_t        spare[6];
 177 };
 178
 179 struct fuse_file_lock {
 180         uint64_t        start;
 181         uint64_t        end;
 182         uint32_t        type;
 183         uint32_t        pid; /* tgid */
 184 };
 185
 186 /**
 187  * Bitmasks for fuse_setattr_in.valid
 188  */
 189 #define FATTR_MODE      (1 << 0)
 190 #define FATTR_UID       (1 << 1)
 191 #define FATTR_GID       (1 << 2)
 192 #define FATTR_SIZE      (1 << 3)
 193 #define FATTR_ATIME     (1 << 4)
 194 #define FATTR_MTIME     (1 << 5)
 195 #define FATTR_FH        (1 << 6)
 196 #define FATTR_ATIME_NOW (1 << 7)
 197 #define FATTR_MTIME_NOW (1 << 8)
 198 #define FATTR_LOCKOWNER (1 << 9)
 199 #define FATTR_CTIME     (1 << 10)
 200
 201 /**
 202  * Flags returned by the OPEN request
 203  *
 204  * FOPEN_DIRECT_IO: bypass page cache for this open file
 205  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
 206  * FOPEN_NONSEEKABLE: the file is not seekable
 207  */
 208 #define FOPEN_DIRECT_IO         (1 << 0)
 209 #define FOPEN_KEEP_CACHE        (1 << 1)
 210 #define FOPEN_NONSEEKABLE       (1 << 2)
 211
 212 /**
 213  * INIT request/reply flags
 214  *
 215  * FUSE_ASYNC_READ: asynchronous read requests
 216  * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
 217  * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
 218  * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
 219  * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
 220  * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
 221  * FUSE_DONT_MASK: don't apply umask to file mode on create operations
 222  * FUSE_SPLICE_WRITE: kernel supports splice write on the device
 223  * FUSE_SPLICE_MOVE: kernel supports splice move on the device
 224  * FUSE_SPLICE_READ: kernel supports splice read on the device
 225  * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
 226  * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
 227  * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
 228  * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
 229  * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
 230  * FUSE_ASYNC_DIO: asynchronous direct I/O submission
 231  * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
 232  */
 233 #define FUSE_ASYNC_READ         (1 << 0)
 234 #define FUSE_POSIX_LOCKS        (1 << 1)
 235 #define FUSE_FILE_OPS           (1 << 2)
 236 #define FUSE_ATOMIC_O_TRUNC     (1 << 3)
 237 #define FUSE_EXPORT_SUPPORT     (1 << 4)
 238 #define FUSE_BIG_WRITES         (1 << 5)
 239 #define FUSE_DONT_MASK          (1 << 6)
 240 #define FUSE_SPLICE_WRITE       (1 << 7)
 241 #define FUSE_SPLICE_MOVE        (1 << 8)
 242 #define FUSE_SPLICE_READ        (1 << 9)
 243 #define FUSE_FLOCK_LOCKS        (1 << 10)
 244 #define FUSE_HAS_IOCTL_DIR      (1 << 11)
 245 #define FUSE_AUTO_INVAL_DATA    (1 << 12)
 246 #define FUSE_DO_READDIRPLUS     (1 << 13)
 247 #define FUSE_READDIRPLUS_AUTO   (1 << 14)
 248 #define FUSE_ASYNC_DIO          (1 << 15)
 249 #define FUSE_WRITEBACK_CACHE    (1 << 16)
 250
 251 /**
 252  * CUSE INIT request/reply flags
 253  *
 254  * CUSE_UNRESTRICTED_IOCTL:  use unrestricted ioctl
 255  */
 256 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
 257
 258 /**
 259  * Release flags
 260  */
 261 #define FUSE_RELEASE_FLUSH      (1 << 0)
 262 #define FUSE_RELEASE_FLOCK_UNLOCK       (1 << 1)
 263
 264 /**
 265  * Getattr flags
 266  */
 267 #define FUSE_GETATTR_FH         (1 << 0)
 268
 269 /**
 270  * Lock flags
 271  */
 272 #define FUSE_LK_FLOCK           (1 << 0)
 273
 274 /**
 275  * WRITE flags
 276  *
 277  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
 278  * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
 279  */
 280 #define FUSE_WRITE_CACHE        (1 << 0)
 281 #define FUSE_WRITE_LOCKOWNER    (1 << 1)
 282
 283 /**
 284  * Read flags
 285  */
 286 #define FUSE_READ_LOCKOWNER     (1 << 1)
 287
 288 /**
 289  * Ioctl flags
 290  *
 291  * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
 292  * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
 293  * FUSE_IOCTL_RETRY: retry with new iovecs
 294  * FUSE_IOCTL_32BIT: 32bit ioctl
 295  * FUSE_IOCTL_DIR: is a directory
 296  *
 297  * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
 298  */
 299 #define FUSE_IOCTL_COMPAT       (1 << 0)
 300 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
 301 #define FUSE_IOCTL_RETRY        (1 << 2)
 302 #define FUSE_IOCTL_32BIT        (1 << 3)
 303 #define FUSE_IOCTL_DIR          (1 << 4)
 304
 305 #define FUSE_IOCTL_MAX_IOV      256
 306
 307 /**
 308  * Poll flags
 309  *
 310  * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
 311  */
 312 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
 313
 314 enum fuse_opcode {
 315         FUSE_LOOKUP        = 1,
 316         FUSE_FORGET        = 2,  /* no reply */
 317         FUSE_GETATTR       = 3,
 318         FUSE_SETATTR       = 4,
 319         FUSE_READLINK      = 5,
 320         FUSE_SYMLINK       = 6,
 321         FUSE_MKNOD         = 8,
 322         FUSE_MKDIR         = 9,
 323         FUSE_UNLINK        = 10,
 324         FUSE_RMDIR         = 11,
 325         FUSE_RENAME        = 12,
 326         FUSE_LINK          = 13,
 327         FUSE_OPEN          = 14,
 328         FUSE_READ          = 15,
 329         FUSE_WRITE         = 16,
 330         FUSE_STATFS        = 17,
 331         FUSE_RELEASE       = 18,
 332         FUSE_FSYNC         = 20,
 333         FUSE_SETXATTR      = 21,
 334         FUSE_GETXATTR      = 22,
 335         FUSE_LISTXATTR     = 23,
 336         FUSE_REMOVEXATTR   = 24,
 337         FUSE_FLUSH         = 25,
 338         FUSE_INIT          = 26,
 339         FUSE_OPENDIR       = 27,
 340         FUSE_READDIR       = 28,
 341         FUSE_RELEASEDIR    = 29,
 342         FUSE_FSYNCDIR      = 30,
 343         FUSE_GETLK         = 31,
 344         FUSE_SETLK         = 32,
 345         FUSE_SETLKW        = 33,
 346         FUSE_ACCESS        = 34,
 347         FUSE_CREATE        = 35,
 348         FUSE_INTERRUPT     = 36,
 349         FUSE_BMAP          = 37,
 350         FUSE_DESTROY       = 38,
 351         FUSE_IOCTL         = 39,
 352         FUSE_POLL          = 40,
 353         FUSE_NOTIFY_REPLY  = 41,
 354         FUSE_BATCH_FORGET  = 42,
 355         FUSE_FALLOCATE     = 43,
 356         FUSE_READDIRPLUS   = 44,
 357         FUSE_RENAME2       = 45,
 358
 359         /* CUSE specific operations */
 360         CUSE_INIT          = 4096,
 361 };
 362
 363 enum fuse_notify_code {
 364         FUSE_NOTIFY_POLL   = 1,
 365         FUSE_NOTIFY_INVAL_INODE = 2,
 366         FUSE_NOTIFY_INVAL_ENTRY = 3,
 367         FUSE_NOTIFY_STORE = 4,
 368         FUSE_NOTIFY_RETRIEVE = 5,
 369         FUSE_NOTIFY_DELETE = 6,
 370         FUSE_NOTIFY_CODE_MAX,
 371 };
 372
 373 /* The read buffer is required to be at least 8k, but may be much larger */
 374 #define FUSE_MIN_READ_BUFFER 8192
 375
 376 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
 377
 378 struct fuse_entry_out {
 379         uint64_t        nodeid;         /* Inode ID */
 380         uint64_t        generation;     /* Inode generation: nodeid:gen must
 381                                            be unique for the fs's lifetime */
 382         uint64_t        entry_valid;    /* Cache timeout for the name */
 383         uint64_t        attr_valid;     /* Cache timeout for the attributes */
 384         uint32_t        entry_valid_nsec;
 385         uint32_t        attr_valid_nsec;
 386         struct fuse_attr attr;
 387 };
 388
 389 struct fuse_forget_in {
 390         uint64_t        nlookup;
 391 };
 392
 393 struct fuse_forget_one {
 394         uint64_t        nodeid;
 395         uint64_t        nlookup;
 396 };
 397
 398 struct fuse_batch_forget_in {
 399         uint32_t        count;
 400         uint32_t        dummy;
 401 };
 402
 403 struct fuse_getattr_in {
 404         uint32_t        getattr_flags;
 405         uint32_t        dummy;
 406         uint64_t        fh;
 407 };
 408
 409 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
 410
 411 struct fuse_attr_out {
 412         uint64_t        attr_valid;     /* Cache timeout for the attributes */
 413         uint32_t        attr_valid_nsec;
 414         uint32_t        dummy;
 415         struct fuse_attr attr;
 416 };
 417
 418 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
 419
 420 struct fuse_mknod_in {
 421         uint32_t        mode;
 422         uint32_t        rdev;
 423         uint32_t        umask;
 424         uint32_t        padding;
 425 };
 426
 427 struct fuse_mkdir_in {
 428         uint32_t        mode;
 429         uint32_t        umask;
 430 };
 431
 432 struct fuse_rename_in {
 433         uint64_t        newdir;
 434 };
 435
 436 struct fuse_rename2_in {
 437         uint64_t        newdir;
 438         uint32_t        flags;
 439         uint32_t        padding;
 440 };
 441
 442 struct fuse_link_in {
 443         uint64_t        oldnodeid;
 444 };
 445
 446 struct fuse_setattr_in {
 447         uint32_t        valid;
 448         uint32_t        padding;
 449         uint64_t        fh;
 450         uint64_t        size;
 451         uint64_t        lock_owner;
 452         uint64_t        atime;
 453         uint64_t        mtime;
 454         uint64_t        ctime;
 455         uint32_t        atimensec;
 456         uint32_t        mtimensec;
 457         uint32_t        ctimensec;
 458         uint32_t        mode;
 459         uint32_t        unused4;
 460         uint32_t        uid;
 461         uint32_t        gid;
 462         uint32_t        unused5;
 463 };
 464
 465 struct fuse_open_in {
 466         uint32_t        flags;
 467         uint32_t        unused;
 468 };
 469
 470 struct fuse_create_in {
 471         uint32_t        flags;
 472         uint32_t        mode;
 473         uint32_t        umask;
 474         uint32_t        padding;
 475 };
 476
 477 struct fuse_open_out {
 478         uint64_t        fh;
 479         uint32_t        open_flags;
 480         uint32_t        padding;
 481 };
 482
 483 struct fuse_release_in {
 484         uint64_t        fh;
 485         uint32_t        flags;
 486         uint32_t        release_flags;
 487         uint64_t        lock_owner;
 488 };
 489
 490 struct fuse_flush_in {
 491         uint64_t        fh;
 492         uint32_t        unused;
 493         uint32_t        padding;
 494         uint64_t        lock_owner;
 495 };
 496
 497 struct fuse_read_in {
 498         uint64_t        fh;
 499         uint64_t        offset;
 500         uint32_t        size;
 501         uint32_t        read_flags;
 502         uint64_t        lock_owner;
 503         uint32_t        flags;
 504         uint32_t        padding;
 505 };
 506
 507 #define FUSE_COMPAT_WRITE_IN_SIZE 24
 508
 509 struct fuse_write_in {
 510         uint64_t        fh;
 511         uint64_t        offset;
 512         uint32_t        size;
 513         uint32_t        write_flags;
 514         uint64_t        lock_owner;
 515         uint32_t        flags;
 516         uint32_t        padding;
 517 };
 518
 519 struct fuse_write_out {
 520         uint32_t        size;
 521         uint32_t        padding;
 522 };
 523
 524 #define FUSE_COMPAT_STATFS_SIZE 48
 525
 526 struct fuse_statfs_out {
 527         struct fuse_kstatfs st;
 528 };
 529
 530 struct fuse_fsync_in {
 531         uint64_t        fh;
 532         uint32_t        fsync_flags;
 533         uint32_t        padding;
 534 };
 535
 536 struct fuse_setxattr_in {
 537         uint32_t        size;
 538         uint32_t        flags;
 539 };
 540
 541 struct fuse_getxattr_in {
 542         uint32_t        size;
 543         uint32_t        padding;
 544 };
 545
 546 struct fuse_getxattr_out {
 547         uint32_t        size;
 548         uint32_t        padding;
 549 };
 550
 551 struct fuse_lk_in {
 552         uint64_t        fh;
 553         uint64_t        owner;
 554         struct fuse_file_lock lk;
 555         uint32_t        lk_flags;
 556         uint32_t        padding;
 557 };
 558
 559 struct fuse_lk_out {
 560         struct fuse_file_lock lk;
 561 };
 562
 563 struct fuse_access_in {
 564         uint32_t        mask;
 565         uint32_t        padding;
 566 };
 567
 568 struct fuse_init_in {
 569         uint32_t        major;
 570         uint32_t        minor;
 571         uint32_t        max_readahead;
 572         uint32_t        flags;
 573 };
 574
 575 #define FUSE_COMPAT_INIT_OUT_SIZE 8
 576 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
 577
 578 struct fuse_init_out {
 579         uint32_t        major;
 580         uint32_t        minor;
 581         uint32_t        max_readahead;
 582         uint32_t        flags;
 583         uint16_t        max_background;
 584         uint16_t        congestion_threshold;
 585         uint32_t        max_write;
 586         uint32_t        time_gran;
 587         uint32_t        unused[9];
 588 };
 589
 590 #define CUSE_INIT_INFO_MAX 4096
 591
 592 struct cuse_init_in {
 593         uint32_t        major;
 594         uint32_t        minor;
 595         uint32_t        unused;
 596         uint32_t        flags;
 597 };
 598
 599 struct cuse_init_out {
 600         uint32_t        major;
 601         uint32_t        minor;
 602         uint32_t        unused;
 603         uint32_t        flags;
 604         uint32_t        max_read;
 605         uint32_t        max_write;
 606         uint32_t        dev_major;              /* chardev major */
 607         uint32_t        dev_minor;              /* chardev minor */
 608         uint32_t        spare[10];
 609 };
 610
 611 struct fuse_interrupt_in {
 612         uint64_t        unique;
 613 };
 614
 615 struct fuse_bmap_in {
 616         uint64_t        block;
 617         uint32_t        blocksize;
 618         uint32_t        padding;
 619 };
 620
 621 struct fuse_bmap_out {
 622         uint64_t        block;
 623 };
 624
 625 struct fuse_ioctl_in {
 626         uint64_t        fh;
 627         uint32_t        flags;
 628         uint32_t        cmd;
 629         uint64_t        arg;
 630         uint32_t        in_size;
 631         uint32_t        out_size;
 632 };
 633
 634 struct fuse_ioctl_iovec {
 635         uint64_t        base;
 636         uint64_t        len;
 637 };
 638
 639 struct fuse_ioctl_out {
 640         int32_t         result;
 641         uint32_t        flags;
 642         uint32_t        in_iovs;
 643         uint32_t        out_iovs;
 644 };
 645
 646 struct fuse_poll_in {
 647         uint64_t        fh;
 648         uint64_t        kh;
 649         uint32_t        flags;
 650         uint32_t        events;
 651 };
 652
 653 struct fuse_poll_out {
 654         uint32_t        revents;
 655         uint32_t        padding;
 656 };
 657
 658 struct fuse_notify_poll_wakeup_out {
 659         uint64_t        kh;
 660 };
 661
 662 struct fuse_fallocate_in {
 663         uint64_t        fh;
 664         uint64_t        offset;
 665         uint64_t        length;
 666         uint32_t        mode;
 667         uint32_t        padding;
 668 };
 669
 670 struct fuse_in_header {
 671         uint32_t        len;
 672         uint32_t        opcode;
 673         uint64_t        unique;
 674         uint64_t        nodeid;
 675         uint32_t        uid;
 676         uint32_t        gid;
 677         uint32_t        pid;
 678         uint32_t        padding;
 679 };
 680
 681 struct fuse_out_header {
 682         uint32_t        len;
 683         int32_t         error;
 684         uint64_t        unique;
 685 };
 686
 687 struct fuse_dirent {
 688         uint64_t        ino;
 689         uint64_t        off;
 690         uint32_t        namelen;
 691         uint32_t        type;
 692         char name[];
 693 };
 694
 695 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
 696 #define FUSE_DIRENT_ALIGN(x) \
 697         (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
 698 #define FUSE_DIRENT_SIZE(d) \
 699         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
 700
 701 struct fuse_direntplus {
 702         struct fuse_entry_out entry_out;
 703         struct fuse_dirent dirent;
 704 };
 705
 706 #define FUSE_NAME_OFFSET_DIRENTPLUS \
 707         offsetof(struct fuse_direntplus, dirent.name)
 708 #define FUSE_DIRENTPLUS_SIZE(d) \
 709         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
 710
 711 struct fuse_notify_inval_inode_out {
 712         uint64_t        ino;
 713         int64_t         off;
 714         int64_t         len;
 715 };
 716
 717 struct fuse_notify_inval_entry_out {
 718         uint64_t        parent;
 719         uint32_t        namelen;
 720         uint32_t        padding;
 721 };
 722
 723 struct fuse_notify_delete_out {
 724         uint64_t        parent;
 725         uint64_t        child;
 726         uint32_t        namelen;
 727         uint32_t        padding;
 728 };
 729
 730 struct fuse_notify_store_out {
 731         uint64_t        nodeid;
 732         uint64_t        offset;
 733         uint32_t        size;
 734         uint32_t        padding;
 735 };
 736
 737 struct fuse_notify_retrieve_out {
 738         uint64_t        notify_unique;
 739         uint64_t        nodeid;
 740         uint64_t        offset;
 741         uint32_t        size;
 742         uint32_t        padding;
 743 };
 744
 745 /* Matches the size of fuse_write_in */
 746 struct fuse_notify_retrieve_in {
 747         uint64_t        dummy1;
 748         uint64_t        offset;
 749         uint32_t        size;
 750         uint32_t        dummy2;
 751         uint64_t        dummy3;
 752         uint64_t        dummy4;
 753 };
 754
 755 #endif /* _LINUX_FUSE_H */