fuse_kernel.h

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    1 /*-
    2  * This file defines the kernel interface of FUSE
    3  * Copyright (C) 2001-2007  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  * $FreeBSD$
   35  */
   36 
   37 #ifndef linux
   38 #include <sys/types.h>
   39 #define __u64 uint64_t
   40 #define __u32 uint32_t
   41 #define __s32 int32_t
   42 #else
   43 #include <asm/types.h>
   44 #include <linux/major.h>
   45 #endif
   46 
   47 /** Version number of this interface */
   48 #define FUSE_KERNEL_VERSION 7
   49 
   50 /** Minor version number of this interface */
   51 #define FUSE_KERNEL_MINOR_VERSION 8
   52 
   53 /** The node ID of the root inode */
   54 #define FUSE_ROOT_ID 1
   55 
   56 /** The major number of the fuse character device */
   57 #define FUSE_MAJOR MISC_MAJOR
   58 
   59 /** The minor number of the fuse character device */
   60 #define FUSE_MINOR 229
   61 
   62 /* Make sure all structures are padded to 64bit boundary, so 32bit
   63    userspace works under 64bit kernels */
   64 
   65 struct fuse_attr {
   66         __u64   ino;
   67         __u64   size;
   68         __u64   blocks;
   69         __u64   atime;
   70         __u64   mtime;
   71         __u64   ctime;
   72         __u32   atimensec;
   73         __u32   mtimensec;
   74         __u32   ctimensec;
   75         __u32   mode;
   76         __u32   nlink;
   77         __u32   uid;
   78         __u32   gid;
   79         __u32   rdev;
   80 };
   81 
   82 struct fuse_kstatfs {
   83         __u64   blocks;
   84         __u64   bfree;
   85         __u64   bavail;
   86         __u64   files;
   87         __u64   ffree;
   88         __u32   bsize;
   89         __u32   namelen;
   90         __u32   frsize;
   91         __u32   padding;
   92         __u32   spare[6];
   93 };
   94 
   95 struct fuse_file_lock {
   96         __u64   start;
   97         __u64   end;
   98         __u32   type;
   99         __u32   pid; /* tgid */
  100 };
  101 
  102 /**
  103  * Bitmasks for fuse_setattr_in.valid
  104  */
  105 #define FATTR_MODE      (1 << 0)
  106 #define FATTR_UID       (1 << 1)
  107 #define FATTR_GID       (1 << 2)
  108 #define FATTR_SIZE      (1 << 3)
  109 #define FATTR_ATIME     (1 << 4)
  110 #define FATTR_MTIME     (1 << 5)
  111 #define FATTR_FH        (1 << 6)
  112 
  113 /**
  114  * Flags returned by the OPEN request
  115  *
  116  * FOPEN_DIRECT_IO: bypass page cache for this open file
  117  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
  118  */
  119 #define FOPEN_DIRECT_IO         (1 << 0)
  120 #define FOPEN_KEEP_CACHE        (1 << 1)
  121 
  122 /**
  123  * INIT request/reply flags
  124  */
  125 #define FUSE_ASYNC_READ         (1 << 0)
  126 #define FUSE_POSIX_LOCKS        (1 << 1)
  127 
  128 /**
  129  * Release flags
  130  */
  131 #define FUSE_RELEASE_FLUSH      (1 << 0)
  132 
  133 enum fuse_opcode {
  134         FUSE_LOOKUP        = 1,
  135         FUSE_FORGET        = 2,  /* no reply */
  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 };
  171 
  172 /* The read buffer is required to be at least 8k, but may be much larger */
  173 #define FUSE_MIN_READ_BUFFER 8192
  174 
  175 struct fuse_entry_out {
  176         __u64   nodeid;         /* Inode ID */
  177         __u64   generation;     /* Inode generation: nodeid:gen must
  178                                    be unique for the fs's lifetime */
  179         __u64   entry_valid;    /* Cache timeout for the name */
  180         __u64   attr_valid;     /* Cache timeout for the attributes */
  181         __u32   entry_valid_nsec;
  182         __u32   attr_valid_nsec;
  183         struct fuse_attr attr;
  184 };
  185 
  186 struct fuse_forget_in {
  187         __u64   nlookup;
  188 };
  189 
  190 struct fuse_attr_out {
  191         __u64   attr_valid;     /* Cache timeout for the attributes */
  192         __u32   attr_valid_nsec;
  193         __u32   dummy;
  194         struct fuse_attr attr;
  195 };
  196 
  197 struct fuse_mkdir_in {
  198         __u32   mode;
  199         __u32   padding;
  200 };
  201 
  202 struct fuse_rename_in {
  203         __u64   newdir;
  204 };
  205 
  206 struct fuse_link_in {
  207         __u64   oldnodeid;
  208 };
  209 
  210 struct fuse_setattr_in {
  211         __u32   valid;
  212         __u32   padding;
  213         __u64   fh;
  214         __u64   size;
  215         __u64   unused1;
  216         __u64   atime;
  217         __u64   mtime;
  218         __u64   unused2;
  219         __u32   atimensec;
  220         __u32   mtimensec;
  221         __u32   unused3;
  222         __u32   mode;
  223         __u32   unused4;
  224         __u32   uid;
  225         __u32   gid;
  226         __u32   unused5;
  227 };
  228 
  229 struct fuse_open_in {
  230         __u32   flags;
  231         __u32   mode;
  232 };
  233 
  234 struct fuse_open_out {
  235         __u64   fh;
  236         __u32   open_flags;
  237         __u32   padding;
  238 };
  239 
  240 struct fuse_release_in {
  241         __u64   fh;
  242         __u32   flags;
  243         __u32   release_flags;
  244         __u64   lock_owner;
  245 };
  246 
  247 struct fuse_flush_in {
  248         __u64   fh;
  249         __u32   unused;
  250         __u32   padding;
  251         __u64   lock_owner;
  252 };
  253 
  254 struct fuse_read_in {
  255         __u64   fh;
  256         __u64   offset;
  257         __u32   size;
  258         __u32   padding;
  259 };
  260 
  261 struct fuse_write_in {
  262         __u64   fh;
  263         __u64   offset;
  264         __u32   size;
  265         __u32   write_flags;
  266 };
  267 
  268 struct fuse_write_out {
  269         __u32   size;
  270         __u32   padding;
  271 };
  272 
  273 #define FUSE_COMPAT_STATFS_SIZE 48
  274 
  275 struct fuse_statfs_out {
  276         struct fuse_kstatfs st;
  277 };
  278 
  279 struct fuse_fsync_in {
  280         __u64   fh;
  281         __u32   fsync_flags;
  282         __u32   padding;
  283 };
  284 
  285 struct fuse_setxattr_in {
  286         __u32   size;
  287         __u32   flags;
  288 };
  289 
  290 struct fuse_getxattr_in {
  291         __u32   size;
  292         __u32   padding;
  293 };
  294 
  295 struct fuse_getxattr_out {
  296         __u32   size;
  297         __u32   padding;
  298 };
  299 
  300 struct fuse_lk_in {
  301         __u64   fh;
  302         __u64   owner;
  303         struct fuse_file_lock lk;
  304 };
  305 
  306 struct fuse_lk_out {
  307         struct fuse_file_lock lk;
  308 };
  309 
  310 struct fuse_access_in {
  311         __u32   mask;
  312         __u32   padding;
  313 };
  314 
  315 struct fuse_init_in {
  316         __u32   major;
  317         __u32   minor;
  318         __u32   max_readahead;
  319         __u32   flags;
  320 };
  321 
  322 struct fuse_init_out {
  323         __u32   major;
  324         __u32   minor;
  325         __u32   max_readahead;
  326         __u32   flags;
  327         __u32   unused;
  328         __u32   max_write;
  329 };
  330 
  331 struct fuse_interrupt_in {
  332         __u64   unique;
  333 };
  334 
  335 struct fuse_bmap_in {
  336         __u64   block;
  337         __u32   blocksize;
  338         __u32   padding;
  339 };
  340 
  341 struct fuse_bmap_out {
  342         __u64   block;
  343 };
  344 
  345 struct fuse_in_header {
  346         __u32   len;
  347         __u32   opcode;
  348         __u64   unique;
  349         __u64   nodeid;
  350         __u32   uid;
  351         __u32   gid;
  352         __u32   pid;
  353         __u32   padding;
  354 };
  355 
  356 struct fuse_out_header {
  357         __u32   len;
  358         __s32   error;
  359         __u64   unique;
  360 };
  361 
  362 struct fuse_dirent {
  363         __u64   ino;
  364         __u64   off;
  365         __u32   namelen;
  366         __u32   type;
  367         char name[0];
  368 };
  369 
  370 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
  371 #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
  372 #define FUSE_DIRENT_SIZE(d) \
  373         FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
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FreeBSD/Linux Kernel Cross Reference sys/fs/fuse/fuse_kernel.h

FreeBSD/Linux Kernel Cross Reference
sys/fs/fuse/fuse_kernel.h
