Commit | Line | Data |
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d8a5ba45 MS |
1 | /* |
2 | FUSE: Filesystem in Userspace | |
71421259 | 3 | Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu> |
d8a5ba45 MS |
4 | |
5 | This program can be distributed under the terms of the GNU GPL. | |
6 | See the file COPYING. | |
7 | */ | |
8 | ||
9 | /* This file defines the kernel interface of FUSE */ | |
10 | ||
11 | #include <asm/types.h> | |
3e8c54fa | 12 | #include <linux/major.h> |
d8a5ba45 MS |
13 | |
14 | /** Version number of this interface */ | |
9e6268db | 15 | #define FUSE_KERNEL_VERSION 7 |
d8a5ba45 MS |
16 | |
17 | /** Minor version number of this interface */ | |
71421259 | 18 | #define FUSE_KERNEL_MINOR_VERSION 7 |
d8a5ba45 MS |
19 | |
20 | /** The node ID of the root inode */ | |
21 | #define FUSE_ROOT_ID 1 | |
22 | ||
334f485d | 23 | /** The major number of the fuse character device */ |
3e8c54fa | 24 | #define FUSE_MAJOR MISC_MAJOR |
334f485d MS |
25 | |
26 | /** The minor number of the fuse character device */ | |
27 | #define FUSE_MINOR 229 | |
28 | ||
06663267 MS |
29 | /* Make sure all structures are padded to 64bit boundary, so 32bit |
30 | userspace works under 64bit kernels */ | |
31 | ||
d8a5ba45 MS |
32 | struct fuse_attr { |
33 | __u64 ino; | |
34 | __u64 size; | |
35 | __u64 blocks; | |
36 | __u64 atime; | |
37 | __u64 mtime; | |
38 | __u64 ctime; | |
39 | __u32 atimensec; | |
40 | __u32 mtimensec; | |
41 | __u32 ctimensec; | |
42 | __u32 mode; | |
43 | __u32 nlink; | |
44 | __u32 uid; | |
45 | __u32 gid; | |
46 | __u32 rdev; | |
47 | }; | |
48 | ||
e5e5558e MS |
49 | struct fuse_kstatfs { |
50 | __u64 blocks; | |
51 | __u64 bfree; | |
52 | __u64 bavail; | |
53 | __u64 files; | |
54 | __u64 ffree; | |
55 | __u32 bsize; | |
56 | __u32 namelen; | |
de5f1202 MS |
57 | __u32 frsize; |
58 | __u32 padding; | |
59 | __u32 spare[6]; | |
e5e5558e MS |
60 | }; |
61 | ||
71421259 MS |
62 | struct fuse_file_lock { |
63 | __u64 start; | |
64 | __u64 end; | |
65 | __u32 type; | |
66 | __u32 pid; /* tgid */ | |
67 | }; | |
68 | ||
9cd68455 MS |
69 | /** |
70 | * Bitmasks for fuse_setattr_in.valid | |
71 | */ | |
9e6268db MS |
72 | #define FATTR_MODE (1 << 0) |
73 | #define FATTR_UID (1 << 1) | |
74 | #define FATTR_GID (1 << 2) | |
75 | #define FATTR_SIZE (1 << 3) | |
76 | #define FATTR_ATIME (1 << 4) | |
77 | #define FATTR_MTIME (1 << 5) | |
befc649c | 78 | #define FATTR_FH (1 << 6) |
9e6268db | 79 | |
45323fb7 MS |
80 | /** |
81 | * Flags returned by the OPEN request | |
82 | * | |
83 | * FOPEN_DIRECT_IO: bypass page cache for this open file | |
84 | * FOPEN_KEEP_CACHE: don't invalidate the data cache on open | |
85 | */ | |
86 | #define FOPEN_DIRECT_IO (1 << 0) | |
87 | #define FOPEN_KEEP_CACHE (1 << 1) | |
88 | ||
9cd68455 MS |
89 | /** |
90 | * INIT request/reply flags | |
91 | */ | |
92 | #define FUSE_ASYNC_READ (1 << 0) | |
71421259 | 93 | #define FUSE_POSIX_LOCKS (1 << 1) |
9cd68455 | 94 | |
334f485d | 95 | enum fuse_opcode { |
e5e5558e MS |
96 | FUSE_LOOKUP = 1, |
97 | FUSE_FORGET = 2, /* no reply */ | |
98 | FUSE_GETATTR = 3, | |
9e6268db | 99 | FUSE_SETATTR = 4, |
e5e5558e | 100 | FUSE_READLINK = 5, |
9e6268db | 101 | FUSE_SYMLINK = 6, |
9e6268db MS |
102 | FUSE_MKNOD = 8, |
103 | FUSE_MKDIR = 9, | |
104 | FUSE_UNLINK = 10, | |
105 | FUSE_RMDIR = 11, | |
106 | FUSE_RENAME = 12, | |
107 | FUSE_LINK = 13, | |
b6aeaded MS |
108 | FUSE_OPEN = 14, |
109 | FUSE_READ = 15, | |
110 | FUSE_WRITE = 16, | |
e5e5558e | 111 | FUSE_STATFS = 17, |
b6aeaded MS |
112 | FUSE_RELEASE = 18, |
113 | FUSE_FSYNC = 20, | |
92a8780e MS |
114 | FUSE_SETXATTR = 21, |
115 | FUSE_GETXATTR = 22, | |
116 | FUSE_LISTXATTR = 23, | |
117 | FUSE_REMOVEXATTR = 24, | |
b6aeaded | 118 | FUSE_FLUSH = 25, |
04730fef MS |
119 | FUSE_INIT = 26, |
120 | FUSE_OPENDIR = 27, | |
121 | FUSE_READDIR = 28, | |
82547981 | 122 | FUSE_RELEASEDIR = 29, |
31d40d74 | 123 | FUSE_FSYNCDIR = 30, |
71421259 MS |
124 | FUSE_GETLK = 31, |
125 | FUSE_SETLK = 32, | |
126 | FUSE_SETLKW = 33, | |
fd72faac MS |
127 | FUSE_ACCESS = 34, |
128 | FUSE_CREATE = 35 | |
334f485d MS |
129 | }; |
130 | ||
1d3d752b MS |
131 | /* The read buffer is required to be at least 8k, but may be much larger */ |
132 | #define FUSE_MIN_READ_BUFFER 8192 | |
e5e5558e MS |
133 | |
134 | struct fuse_entry_out { | |
135 | __u64 nodeid; /* Inode ID */ | |
136 | __u64 generation; /* Inode generation: nodeid:gen must | |
137 | be unique for the fs's lifetime */ | |
138 | __u64 entry_valid; /* Cache timeout for the name */ | |
139 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
140 | __u32 entry_valid_nsec; | |
141 | __u32 attr_valid_nsec; | |
142 | struct fuse_attr attr; | |
143 | }; | |
144 | ||
145 | struct fuse_forget_in { | |
9e6268db | 146 | __u64 nlookup; |
e5e5558e MS |
147 | }; |
148 | ||
149 | struct fuse_attr_out { | |
150 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
151 | __u32 attr_valid_nsec; | |
152 | __u32 dummy; | |
153 | struct fuse_attr attr; | |
154 | }; | |
155 | ||
9e6268db MS |
156 | struct fuse_mknod_in { |
157 | __u32 mode; | |
158 | __u32 rdev; | |
159 | }; | |
160 | ||
161 | struct fuse_mkdir_in { | |
162 | __u32 mode; | |
06663267 | 163 | __u32 padding; |
9e6268db MS |
164 | }; |
165 | ||
166 | struct fuse_rename_in { | |
167 | __u64 newdir; | |
168 | }; | |
169 | ||
170 | struct fuse_link_in { | |
171 | __u64 oldnodeid; | |
172 | }; | |
173 | ||
174 | struct fuse_setattr_in { | |
175 | __u32 valid; | |
06663267 | 176 | __u32 padding; |
befc649c MS |
177 | __u64 fh; |
178 | __u64 size; | |
179 | __u64 unused1; | |
180 | __u64 atime; | |
181 | __u64 mtime; | |
182 | __u64 unused2; | |
183 | __u32 atimensec; | |
184 | __u32 mtimensec; | |
185 | __u32 unused3; | |
186 | __u32 mode; | |
187 | __u32 unused4; | |
188 | __u32 uid; | |
189 | __u32 gid; | |
190 | __u32 unused5; | |
9e6268db MS |
191 | }; |
192 | ||
b6aeaded MS |
193 | struct fuse_open_in { |
194 | __u32 flags; | |
fd72faac | 195 | __u32 mode; |
b6aeaded MS |
196 | }; |
197 | ||
198 | struct fuse_open_out { | |
199 | __u64 fh; | |
200 | __u32 open_flags; | |
06663267 | 201 | __u32 padding; |
b6aeaded MS |
202 | }; |
203 | ||
204 | struct fuse_release_in { | |
205 | __u64 fh; | |
206 | __u32 flags; | |
06663267 | 207 | __u32 padding; |
b6aeaded MS |
208 | }; |
209 | ||
210 | struct fuse_flush_in { | |
211 | __u64 fh; | |
212 | __u32 flush_flags; | |
06663267 | 213 | __u32 padding; |
71421259 | 214 | __u64 lock_owner; |
b6aeaded MS |
215 | }; |
216 | ||
217 | struct fuse_read_in { | |
218 | __u64 fh; | |
219 | __u64 offset; | |
220 | __u32 size; | |
06663267 | 221 | __u32 padding; |
b6aeaded MS |
222 | }; |
223 | ||
224 | struct fuse_write_in { | |
225 | __u64 fh; | |
226 | __u64 offset; | |
227 | __u32 size; | |
228 | __u32 write_flags; | |
229 | }; | |
230 | ||
231 | struct fuse_write_out { | |
232 | __u32 size; | |
06663267 | 233 | __u32 padding; |
b6aeaded MS |
234 | }; |
235 | ||
de5f1202 MS |
236 | #define FUSE_COMPAT_STATFS_SIZE 48 |
237 | ||
e5e5558e MS |
238 | struct fuse_statfs_out { |
239 | struct fuse_kstatfs st; | |
240 | }; | |
241 | ||
b6aeaded MS |
242 | struct fuse_fsync_in { |
243 | __u64 fh; | |
244 | __u32 fsync_flags; | |
06663267 | 245 | __u32 padding; |
b6aeaded MS |
246 | }; |
247 | ||
92a8780e MS |
248 | struct fuse_setxattr_in { |
249 | __u32 size; | |
250 | __u32 flags; | |
251 | }; | |
252 | ||
253 | struct fuse_getxattr_in { | |
254 | __u32 size; | |
06663267 | 255 | __u32 padding; |
92a8780e MS |
256 | }; |
257 | ||
258 | struct fuse_getxattr_out { | |
259 | __u32 size; | |
06663267 | 260 | __u32 padding; |
92a8780e MS |
261 | }; |
262 | ||
71421259 MS |
263 | struct fuse_lk_in { |
264 | __u64 fh; | |
265 | __u64 owner; | |
266 | struct fuse_file_lock lk; | |
267 | }; | |
268 | ||
269 | struct fuse_lk_out { | |
270 | struct fuse_file_lock lk; | |
271 | }; | |
272 | ||
31d40d74 MS |
273 | struct fuse_access_in { |
274 | __u32 mask; | |
275 | __u32 padding; | |
276 | }; | |
277 | ||
3ec870d5 | 278 | struct fuse_init_in { |
334f485d MS |
279 | __u32 major; |
280 | __u32 minor; | |
9cd68455 MS |
281 | __u32 max_readahead; |
282 | __u32 flags; | |
334f485d MS |
283 | }; |
284 | ||
3ec870d5 MS |
285 | struct fuse_init_out { |
286 | __u32 major; | |
287 | __u32 minor; | |
9cd68455 MS |
288 | __u32 max_readahead; |
289 | __u32 flags; | |
290 | __u32 unused; | |
3ec870d5 MS |
291 | __u32 max_write; |
292 | }; | |
293 | ||
334f485d MS |
294 | struct fuse_in_header { |
295 | __u32 len; | |
296 | __u32 opcode; | |
297 | __u64 unique; | |
298 | __u64 nodeid; | |
299 | __u32 uid; | |
300 | __u32 gid; | |
301 | __u32 pid; | |
06663267 | 302 | __u32 padding; |
334f485d MS |
303 | }; |
304 | ||
305 | struct fuse_out_header { | |
306 | __u32 len; | |
307 | __s32 error; | |
308 | __u64 unique; | |
309 | }; | |
310 | ||
e5e5558e MS |
311 | struct fuse_dirent { |
312 | __u64 ino; | |
313 | __u64 off; | |
314 | __u32 namelen; | |
315 | __u32 type; | |
316 | char name[0]; | |
317 | }; | |
318 | ||
319 | #define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name) | |
320 | #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1)) | |
321 | #define FUSE_DIRENT_SIZE(d) \ | |
322 | FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) |