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  *  - add FUSE_NO_OPEN_SUPPORT flag
 105  *
 106  *  7.24
 107  *  - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
 108  */
 109
 110 #ifndef _LINUX_FUSE_H
 111 #define _LINUX_FUSE_H
 112
 113 #ifdef __KERNEL__
 114 #include <linux/types.h>
 115 #else
 116 #include <stdint.h>
 117 #endif
 118
 119 /*
 120  * Version negotiation:
 121  *
 122  * Both the kernel and userspace send the version they support in the
 123  * INIT request and reply respectively.
 124  *
 125  * If the major versions match then both shall use the smallest
 126  * of the two minor versions for communication.
 127  *
 128  * If the kernel supports a larger major version, then userspace shall
 129  * reply with the major version it supports, ignore the rest of the
 130  * INIT message and expect a new INIT message from the kernel with a
 131  * matching major version.
 132  *
 133  * If the library supports a larger major version, then it shall fall
 134  * back to the major protocol version sent by the kernel for
 135  * communication and reply with that major version (and an arbitrary
 136  * supported minor version).
 137  */
 138
 139 /** Version number of this interface */
 140 #define FUSE_KERNEL_VERSION 7
 141
 142 /** Minor version number of this interface */
 143 #define FUSE_KERNEL_MINOR_VERSION 24
 144
 145 /** The node ID of the root inode */
 146 #define FUSE_ROOT_ID 1
 147
 148 /* Make sure all structures are padded to 64bit boundary, so 32bit
 149    userspace works under 64bit kernels */
 150
 151 struct fuse_attr {
 152         uint64_t        ino;
 153         uint64_t        size;
 154         uint64_t        blocks;
 155         uint64_t        atime;
 156         uint64_t        mtime;
 157         uint64_t        ctime;
 158         uint32_t        atimensec;
 159         uint32_t        mtimensec;
 160         uint32_t        ctimensec;
 161         uint32_t        mode;
 162         uint32_t        nlink;
 163         uint32_t        uid;
 164         uint32_t        gid;
 165         uint32_t        rdev;
 166         uint32_t        blksize;
 167         uint32_t        padding;
 168 };
 169
 170 struct fuse_kstatfs {
 171         uint64_t        blocks;
 172         uint64_t        bfree;
 173         uint64_t        bavail;
 174         uint64_t        files;
 175         uint64_t        ffree;
 176         uint32_t        bsize;
 177         uint32_t        namelen;
 178         uint32_t        frsize;
 179         uint32_t        padding;
 180         uint32_t        spare[6];
 181 };
 182
 183 struct fuse_file_lock {
 184         uint64_t        start;
 185         uint64_t        end;
 186         uint32_t        type;
 187         uint32_t        pid; /* tgid */
 188 };
 189
 190 /**
 191  * Bitmasks for fuse_setattr_in.valid
 192  */
 193 #define FATTR_MODE      (1 << 0)
 194 #define FATTR_UID       (1 << 1)
 195 #define FATTR_GID       (1 << 2)
 196 #define FATTR_SIZE      (1 << 3)
 197 #define FATTR_ATIME     (1 << 4)
 198 #define FATTR_MTIME     (1 << 5)
 199 #define FATTR_FH        (1 << 6)
 200 #define FATTR_ATIME_NOW (1 << 7)
 201 #define FATTR_MTIME_NOW (1 << 8)
 202 #define FATTR_LOCKOWNER (1 << 9)
 203 #define FATTR_CTIME     (1 << 10)
 204
 205 /**
 206  * Flags returned by the OPEN request
 207  *
 208  * FOPEN_DIRECT_IO: bypass page cache for this open file
 209  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
 210  * FOPEN_NONSEEKABLE: the file is not seekable
 211  */
 212 #define FOPEN_DIRECT_IO         (1 << 0)
 213 #define FOPEN_KEEP_CACHE        (1 << 1)
 214 #define FOPEN_NONSEEKABLE       (1 << 2)
 215
 216 /**
 217  * INIT request/reply flags
 218  *
 219  * FUSE_ASYNC_READ: asynchronous read requests
 220  * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
 221  * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
 222  * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
 223  * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
 224  * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
 225  * FUSE_DONT_MASK: don't apply umask to file mode on create operations
 226  * FUSE_SPLICE_WRITE: kernel supports splice write on the device
 227  * FUSE_SPLICE_MOVE: kernel supports splice move on the device
 228  * FUSE_SPLICE_READ: kernel supports splice read on the device
 229  * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
 230  * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
 231  * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
 232  * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
 233  * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
 234  * FUSE_ASYNC_DIO: asynchronous direct I/O submission
 235  * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
 236  * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
 237  */
 238 #define FUSE_ASYNC_READ         (1 << 0)
 239 #define FUSE_POSIX_LOCKS        (1 << 1)
 240 #define FUSE_FILE_OPS           (1 << 2)
 241 #define FUSE_ATOMIC_O_TRUNC     (1 << 3)
 242 #define FUSE_EXPORT_SUPPORT     (1 << 4)
 243 #define FUSE_BIG_WRITES         (1 << 5)
 244 #define FUSE_DONT_MASK          (1 << 6)
 245 #define FUSE_SPLICE_WRITE       (1 << 7)
 246 #define FUSE_SPLICE_MOVE        (1 << 8)
 247 #define FUSE_SPLICE_READ        (1 << 9)
 248 #define FUSE_FLOCK_LOCKS        (1 << 10)
 249 #define FUSE_HAS_IOCTL_DIR      (1 << 11)
 250 #define FUSE_AUTO_INVAL_DATA    (1 << 12)
 251 #define FUSE_DO_READDIRPLUS     (1 << 13)
 252 #define FUSE_READDIRPLUS_AUTO   (1 << 14)
 253 #define FUSE_ASYNC_DIO          (1 << 15)
 254 #define FUSE_WRITEBACK_CACHE    (1 << 16)
 255 #define FUSE_NO_OPEN_SUPPORT    (1 << 17)
 256
 257 /**
 258  * CUSE INIT request/reply flags
 259  *
 260  * CUSE_UNRESTRICTED_IOCTL:  use unrestricted ioctl
 261  */
 262 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
 263
 264 /**
 265  * Release flags
 266  */
 267 #define FUSE_RELEASE_FLUSH      (1 << 0)
 268 #define FUSE_RELEASE_FLOCK_UNLOCK       (1 << 1)
 269
 270 /**
 271  * Getattr flags
 272  */
 273 #define FUSE_GETATTR_FH         (1 << 0)
 274
 275 /**
 276  * Lock flags
 277  */
 278 #define FUSE_LK_FLOCK           (1 << 0)
 279
 280 /**
 281  * WRITE flags
 282  *
 283  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
 284  * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
 285  */
 286 #define FUSE_WRITE_CACHE        (1 << 0)
 287 #define FUSE_WRITE_LOCKOWNER    (1 << 1)
 288
 289 /**
 290  * Read flags
 291  */
 292 #define FUSE_READ_LOCKOWNER     (1 << 1)
 293
 294 /**
 295  * Ioctl flags
 296  *
 297  * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
 298  * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
 299  * FUSE_IOCTL_RETRY: retry with new iovecs
 300  * FUSE_IOCTL_32BIT: 32bit ioctl
 301  * FUSE_IOCTL_DIR: is a directory
 302  *
 303  * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
 304  */
 305 #define FUSE_IOCTL_COMPAT       (1 << 0)
 306 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
 307 #define FUSE_IOCTL_RETRY        (1 << 2)
 308 #define FUSE_IOCTL_32BIT        (1 << 3)
 309 #define FUSE_IOCTL_DIR          (1 << 4)
 310
 311 #define FUSE_IOCTL_MAX_IOV      256
 312
 313 /**
 314  * Poll flags
 315  *
 316  * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
 317  */
 318 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
 319
 320 enum fuse_opcode {
 321         FUSE_LOOKUP        = 1,
 322         FUSE_FORGET        = 2,  /* no reply */
 323         FUSE_GETATTR       = 3,
 324         FUSE_SETATTR       = 4,
 325         FUSE_READLINK      = 5,
 326         FUSE_SYMLINK       = 6,
 327         FUSE_MKNOD         = 8,
 328         FUSE_MKDIR         = 9,
 329         FUSE_UNLINK        = 10,
 330         FUSE_RMDIR         = 11,
 331         FUSE_RENAME        = 12,
 332         FUSE_LINK          = 13,
 333         FUSE_OPEN          = 14,
 334         FUSE_READ          = 15,
 335         FUSE_WRITE         = 16,
 336         FUSE_STATFS        = 17,
 337         FUSE_RELEASE       = 18,
 338         FUSE_FSYNC         = 20,
 339         FUSE_SETXATTR      = 21,
 340         FUSE_GETXATTR      = 22,
 341         FUSE_LISTXATTR     = 23,
 342         FUSE_REMOVEXATTR   = 24,
 343         FUSE_FLUSH         = 25,
 344         FUSE_INIT          = 26,
 345         FUSE_OPENDIR       = 27,
 346         FUSE_READDIR       = 28,
 347         FUSE_RELEASEDIR    = 29,
 348         FUSE_FSYNCDIR      = 30,
 349         FUSE_GETLK         = 31,
 350         FUSE_SETLK         = 32,
 351         FUSE_SETLKW        = 33,
 352         FUSE_ACCESS        = 34,
 353         FUSE_CREATE        = 35,
 354         FUSE_INTERRUPT     = 36,
 355         FUSE_BMAP          = 37,
 356         FUSE_DESTROY       = 38,
 357         FUSE_IOCTL         = 39,
 358         FUSE_POLL          = 40,
 359         FUSE_NOTIFY_REPLY  = 41,
 360         FUSE_BATCH_FORGET  = 42,
 361         FUSE_FALLOCATE     = 43,
 362         FUSE_READDIRPLUS   = 44,
 363         FUSE_RENAME2       = 45,
 364         FUSE_LSEEK         = 46,
 365
 366         /* CUSE specific operations */
 367         CUSE_INIT          = 4096,
 368 };
 369
 370 enum fuse_notify_code {
 371         FUSE_NOTIFY_POLL   = 1,
 372         FUSE_NOTIFY_INVAL_INODE = 2,
 373         FUSE_NOTIFY_INVAL_ENTRY = 3,
 374         FUSE_NOTIFY_STORE = 4,
 375         FUSE_NOTIFY_RETRIEVE = 5,
 376         FUSE_NOTIFY_DELETE = 6,
 377         FUSE_NOTIFY_CODE_MAX,
 378 };
 379
 380 /* The read buffer is required to be at least 8k, but may be much larger */
 381 #define FUSE_MIN_READ_BUFFER 8192
 382
 383 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
 384
 385 struct fuse_entry_out {
 386         uint64_t        nodeid;         /* Inode ID */
 387         uint64_t        generation;     /* Inode generation: nodeid:gen must
 388                                            be unique for the fs's lifetime */
 389         uint64_t        entry_valid;    /* Cache timeout for the name */
 390         uint64_t        attr_valid;     /* Cache timeout for the attributes */
 391         uint32_t        entry_valid_nsec;
 392         uint32_t        attr_valid_nsec;
 393         struct fuse_attr attr;
 394 };
 395
 396 struct fuse_forget_in {
 397         uint64_t        nlookup;
 398 };
 399
 400 struct fuse_forget_one {
 401         uint64_t        nodeid;
 402         uint64_t        nlookup;
 403 };
 404
 405 struct fuse_batch_forget_in {
 406         uint32_t        count;
 407         uint32_t        dummy;
 408 };
 409
 410 struct fuse_getattr_in {
 411         uint32_t        getattr_flags;
 412         uint32_t        dummy;
 413         uint64_t        fh;
 414 };
 415
 416 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
 417
 418 struct fuse_attr_out {
 419         uint64_t        attr_valid;     /* Cache timeout for the attributes */
 420         uint32_t        attr_valid_nsec;
 421         uint32_t        dummy;
 422         struct fuse_attr attr;
 423 };
 424
 425 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
 426
 427 struct fuse_mknod_in {
 428         uint32_t        mode;
 429         uint32_t        rdev;
 430         uint32_t        umask;
 431         uint32_t        padding;
 432 };
 433
 434 struct fuse_mkdir_in {
 435         uint32_t        mode;
 436         uint32_t        umask;
 437 };
 438
 439 struct fuse_rename_in {
 440         uint64_t        newdir;
 441 };
 442
 443 struct fuse_rename2_in {
 444         uint64_t        newdir;
 445         uint32_t        flags;
 446         uint32_t        padding;
 447 };
 448
 449 struct fuse_link_in {
 450         uint64_t        oldnodeid;
 451 };
 452
 453 struct fuse_setattr_in {
 454         uint32_t        valid;
 455         uint32_t        padding;
 456         uint64_t        fh;
 457         uint64_t        size;
 458         uint64_t        lock_owner;
 459         uint64_t        atime;
 460         uint64_t        mtime;
 461         uint64_t        ctime;
 462         uint32_t        atimensec;
 463         uint32_t        mtimensec;
 464         uint32_t        ctimensec;
 465         uint32_t        mode;
 466         uint32_t        unused4;
 467         uint32_t        uid;
 468         uint32_t        gid;
 469         uint32_t        unused5;
 470 };
 471
 472 struct fuse_open_in {
 473         uint32_t        flags;
 474         uint32_t        unused;
 475 };
 476
 477 struct fuse_create_in {
 478         uint32_t        flags;
 479         uint32_t        mode;
 480         uint32_t        umask;
 481         uint32_t        padding;
 482 };
 483
 484 struct fuse_open_out {
 485         uint64_t        fh;
 486         uint32_t        open_flags;
 487         uint32_t        padding;
 488 };
 489
 490 struct fuse_release_in {
 491         uint64_t        fh;
 492         uint32_t        flags;
 493         uint32_t        release_flags;
 494         uint64_t        lock_owner;
 495 };
 496
 497 struct fuse_flush_in {
 498         uint64_t        fh;
 499         uint32_t        unused;
 500         uint32_t        padding;
 501         uint64_t        lock_owner;
 502 };
 503
 504 struct fuse_read_in {
 505         uint64_t        fh;
 506         uint64_t        offset;
 507         uint32_t        size;
 508         uint32_t        read_flags;
 509         uint64_t        lock_owner;
 510         uint32_t        flags;
 511         uint32_t        padding;
 512 };
 513
 514 #define FUSE_COMPAT_WRITE_IN_SIZE 24
 515
 516 struct fuse_write_in {
 517         uint64_t        fh;
 518         uint64_t        offset;
 519         uint32_t        size;
 520         uint32_t        write_flags;
 521         uint64_t        lock_owner;
 522         uint32_t        flags;
 523         uint32_t        padding;
 524 };
 525
 526 struct fuse_write_out {
 527         uint32_t        size;
 528         uint32_t        padding;
 529 };
 530
 531 #define FUSE_COMPAT_STATFS_SIZE 48
 532
 533 struct fuse_statfs_out {
 534         struct fuse_kstatfs st;
 535 };
 536
 537 struct fuse_fsync_in {
 538         uint64_t        fh;
 539         uint32_t        fsync_flags;
 540         uint32_t        padding;
 541 };
 542
 543 struct fuse_setxattr_in {
 544         uint32_t        size;
 545         uint32_t        flags;
 546 };
 547
 548 struct fuse_getxattr_in {
 549         uint32_t        size;
 550         uint32_t        padding;
 551 };
 552
 553 struct fuse_getxattr_out {
 554         uint32_t        size;
 555         uint32_t        padding;
 556 };
 557
 558 struct fuse_lk_in {
 559         uint64_t        fh;
 560         uint64_t        owner;
 561         struct fuse_file_lock lk;
 562         uint32_t        lk_flags;
 563         uint32_t        padding;
 564 };
 565
 566 struct fuse_lk_out {
 567         struct fuse_file_lock lk;
 568 };
 569
 570 struct fuse_access_in {
 571         uint32_t        mask;
 572         uint32_t        padding;
 573 };
 574
 575 struct fuse_init_in {
 576         uint32_t        major;
 577         uint32_t        minor;
 578         uint32_t        max_readahead;
 579         uint32_t        flags;
 580 };
 581
 582 #define FUSE_COMPAT_INIT_OUT_SIZE 8
 583 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
 584
 585 struct fuse_init_out {
 586         uint32_t        major;
 587         uint32_t        minor;
 588         uint32_t        max_readahead;
 589         uint32_t        flags;
 590         uint16_t        max_background;
 591         uint16_t        congestion_threshold;
 592         uint32_t        max_write;
 593         uint32_t        time_gran;
 594         uint32_t        unused[9];
 595 };
 596
 597 #define CUSE_INIT_INFO_MAX 4096
 598
 599 struct cuse_init_in {
 600         uint32_t        major;
 601         uint32_t        minor;
 602         uint32_t        unused;
 603         uint32_t        flags;
 604 };
 605
 606 struct cuse_init_out {
 607         uint32_t        major;
 608         uint32_t        minor;
 609         uint32_t        unused;
 610         uint32_t        flags;
 611         uint32_t        max_read;
 612         uint32_t        max_write;
 613         uint32_t        dev_major;              /* chardev major */
 614         uint32_t        dev_minor;              /* chardev minor */
 615         uint32_t        spare[10];
 616 };
 617
 618 struct fuse_interrupt_in {
 619         uint64_t        unique;
 620 };
 621
 622 struct fuse_bmap_in {
 623         uint64_t        block;
 624         uint32_t        blocksize;
 625         uint32_t        padding;
 626 };
 627
 628 struct fuse_bmap_out {
 629         uint64_t        block;
 630 };
 631
 632 struct fuse_ioctl_in {
 633         uint64_t        fh;
 634         uint32_t        flags;
 635         uint32_t        cmd;
 636         uint64_t        arg;
 637         uint32_t        in_size;
 638         uint32_t        out_size;
 639 };
 640
 641 struct fuse_ioctl_iovec {
 642         uint64_t        base;
 643         uint64_t        len;
 644 };
 645
 646 struct fuse_ioctl_out {
 647         int32_t         result;
 648         uint32_t        flags;
 649         uint32_t        in_iovs;
 650         uint32_t        out_iovs;
 651 };
 652
 653 struct fuse_poll_in {
 654         uint64_t        fh;
 655         uint64_t        kh;
 656         uint32_t        flags;
 657         uint32_t        events;
 658 };
 659
 660 struct fuse_poll_out {
 661         uint32_t        revents;
 662         uint32_t        padding;
 663 };
 664
 665 struct fuse_notify_poll_wakeup_out {
 666         uint64_t        kh;
 667 };
 668
 669 struct fuse_fallocate_in {
 670         uint64_t        fh;
 671         uint64_t        offset;
 672         uint64_t        length;
 673         uint32_t        mode;
 674         uint32_t        padding;
 675 };
 676
 677 struct fuse_in_header {
 678         uint32_t        len;
 679         uint32_t        opcode;
 680         uint64_t        unique;
 681         uint64_t        nodeid;
 682         uint32_t        uid;
 683         uint32_t        gid;
 684         uint32_t        pid;
 685         uint32_t        padding;
 686 };
 687
 688 struct fuse_out_header {
 689         uint32_t        len;
 690         int32_t         error;
 691         uint64_t        unique;
 692 };
 693
 694 struct fuse_dirent {
 695         uint64_t        ino;
 696         uint64_t        off;
 697         uint32_t        namelen;
 698         uint32_t        type;
 699         char name[];
 700 };
 701
 702 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
 703 #define FUSE_DIRENT_ALIGN(x) \
 704         (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
 705 #define FUSE_DIRENT_SIZE(d) \
 706         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
 707
 708 struct fuse_direntplus {
 709         struct fuse_entry_out entry_out;
 710         struct fuse_dirent dirent;
 711 };
 712
 713 #define FUSE_NAME_OFFSET_DIRENTPLUS \
 714         offsetof(struct fuse_direntplus, dirent.name)
 715 #define FUSE_DIRENTPLUS_SIZE(d) \
 716         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
 717
 718 struct fuse_notify_inval_inode_out {
 719         uint64_t        ino;
 720         int64_t         off;
 721         int64_t         len;
 722 };
 723
 724 struct fuse_notify_inval_entry_out {
 725         uint64_t        parent;
 726         uint32_t        namelen;
 727         uint32_t        padding;
 728 };
 729
 730 struct fuse_notify_delete_out {
 731         uint64_t        parent;
 732         uint64_t        child;
 733         uint32_t        namelen;
 734         uint32_t        padding;
 735 };
 736
 737 struct fuse_notify_store_out {
 738         uint64_t        nodeid;
 739         uint64_t        offset;
 740         uint32_t        size;
 741         uint32_t        padding;
 742 };
 743
 744 struct fuse_notify_retrieve_out {
 745         uint64_t        notify_unique;
 746         uint64_t        nodeid;
 747         uint64_t        offset;
 748         uint32_t        size;
 749         uint32_t        padding;
 750 };
 751
 752 /* Matches the size of fuse_write_in */
 753 struct fuse_notify_retrieve_in {
 754         uint64_t        dummy1;
 755         uint64_t        offset;
 756         uint32_t        size;
 757         uint32_t        dummy2;
 758         uint64_t        dummy3;
 759         uint64_t        dummy4;
 760 };
 761
 762 /* Device ioctls: */
 763 #define FUSE_DEV_IOC_CLONE      _IOR(229, 0, uint32_t)
 764
 765 struct fuse_lseek_in {
 766         uint64_t        fh;
 767         uint64_t        offset;
 768         uint32_t        whence;
 769         uint32_t        padding;
 770 };
 771
 772 struct fuse_lseek_out {
 773         uint64_t        offset;
 774 };
 775
 776 #endif /* _LINUX_FUSE_H */