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d8a5ba45 MS |
1 | /* |
2 | FUSE: Filesystem in Userspace | |
3 | Copyright (C) 2001-2005 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 | ||
9 | /* This file defines the kernel interface of FUSE */ | |
10 | ||
11 | #include <asm/types.h> | |
12 | ||
13 | /** Version number of this interface */ | |
9e6268db | 14 | #define FUSE_KERNEL_VERSION 7 |
d8a5ba45 MS |
15 | |
16 | /** Minor version number of this interface */ | |
45323fb7 | 17 | #define FUSE_KERNEL_MINOR_VERSION 2 |
d8a5ba45 MS |
18 | |
19 | /** The node ID of the root inode */ | |
20 | #define FUSE_ROOT_ID 1 | |
21 | ||
334f485d MS |
22 | /** The major number of the fuse character device */ |
23 | #define FUSE_MAJOR 10 | |
24 | ||
25 | /** The minor number of the fuse character device */ | |
26 | #define FUSE_MINOR 229 | |
27 | ||
06663267 MS |
28 | /* Make sure all structures are padded to 64bit boundary, so 32bit |
29 | userspace works under 64bit kernels */ | |
30 | ||
d8a5ba45 MS |
31 | struct fuse_attr { |
32 | __u64 ino; | |
33 | __u64 size; | |
34 | __u64 blocks; | |
35 | __u64 atime; | |
36 | __u64 mtime; | |
37 | __u64 ctime; | |
38 | __u32 atimensec; | |
39 | __u32 mtimensec; | |
40 | __u32 ctimensec; | |
41 | __u32 mode; | |
42 | __u32 nlink; | |
43 | __u32 uid; | |
44 | __u32 gid; | |
45 | __u32 rdev; | |
46 | }; | |
47 | ||
e5e5558e MS |
48 | struct fuse_kstatfs { |
49 | __u64 blocks; | |
50 | __u64 bfree; | |
51 | __u64 bavail; | |
52 | __u64 files; | |
53 | __u64 ffree; | |
54 | __u32 bsize; | |
55 | __u32 namelen; | |
56 | }; | |
57 | ||
9e6268db MS |
58 | #define FATTR_MODE (1 << 0) |
59 | #define FATTR_UID (1 << 1) | |
60 | #define FATTR_GID (1 << 2) | |
61 | #define FATTR_SIZE (1 << 3) | |
62 | #define FATTR_ATIME (1 << 4) | |
63 | #define FATTR_MTIME (1 << 5) | |
64 | #define FATTR_CTIME (1 << 6) | |
65 | ||
45323fb7 MS |
66 | /** |
67 | * Flags returned by the OPEN request | |
68 | * | |
69 | * FOPEN_DIRECT_IO: bypass page cache for this open file | |
70 | * FOPEN_KEEP_CACHE: don't invalidate the data cache on open | |
71 | */ | |
72 | #define FOPEN_DIRECT_IO (1 << 0) | |
73 | #define FOPEN_KEEP_CACHE (1 << 1) | |
74 | ||
334f485d | 75 | enum fuse_opcode { |
e5e5558e MS |
76 | FUSE_LOOKUP = 1, |
77 | FUSE_FORGET = 2, /* no reply */ | |
78 | FUSE_GETATTR = 3, | |
9e6268db | 79 | FUSE_SETATTR = 4, |
e5e5558e | 80 | FUSE_READLINK = 5, |
9e6268db | 81 | FUSE_SYMLINK = 6, |
9e6268db MS |
82 | FUSE_MKNOD = 8, |
83 | FUSE_MKDIR = 9, | |
84 | FUSE_UNLINK = 10, | |
85 | FUSE_RMDIR = 11, | |
86 | FUSE_RENAME = 12, | |
87 | FUSE_LINK = 13, | |
b6aeaded MS |
88 | FUSE_OPEN = 14, |
89 | FUSE_READ = 15, | |
90 | FUSE_WRITE = 16, | |
e5e5558e | 91 | FUSE_STATFS = 17, |
b6aeaded MS |
92 | FUSE_RELEASE = 18, |
93 | FUSE_FSYNC = 20, | |
92a8780e MS |
94 | FUSE_SETXATTR = 21, |
95 | FUSE_GETXATTR = 22, | |
96 | FUSE_LISTXATTR = 23, | |
97 | FUSE_REMOVEXATTR = 24, | |
b6aeaded | 98 | FUSE_FLUSH = 25, |
04730fef MS |
99 | FUSE_INIT = 26, |
100 | FUSE_OPENDIR = 27, | |
101 | FUSE_READDIR = 28, | |
102 | FUSE_RELEASEDIR = 29 | |
334f485d MS |
103 | }; |
104 | ||
105 | /* Conservative buffer size for the client */ | |
106 | #define FUSE_MAX_IN 8192 | |
107 | ||
e5e5558e | 108 | #define FUSE_NAME_MAX 1024 |
9e6268db | 109 | #define FUSE_SYMLINK_MAX 4096 |
92a8780e | 110 | #define FUSE_XATTR_SIZE_MAX 4096 |
e5e5558e MS |
111 | |
112 | struct fuse_entry_out { | |
113 | __u64 nodeid; /* Inode ID */ | |
114 | __u64 generation; /* Inode generation: nodeid:gen must | |
115 | be unique for the fs's lifetime */ | |
116 | __u64 entry_valid; /* Cache timeout for the name */ | |
117 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
118 | __u32 entry_valid_nsec; | |
119 | __u32 attr_valid_nsec; | |
120 | struct fuse_attr attr; | |
121 | }; | |
122 | ||
123 | struct fuse_forget_in { | |
9e6268db | 124 | __u64 nlookup; |
e5e5558e MS |
125 | }; |
126 | ||
127 | struct fuse_attr_out { | |
128 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
129 | __u32 attr_valid_nsec; | |
130 | __u32 dummy; | |
131 | struct fuse_attr attr; | |
132 | }; | |
133 | ||
9e6268db MS |
134 | struct fuse_mknod_in { |
135 | __u32 mode; | |
136 | __u32 rdev; | |
137 | }; | |
138 | ||
139 | struct fuse_mkdir_in { | |
140 | __u32 mode; | |
06663267 | 141 | __u32 padding; |
9e6268db MS |
142 | }; |
143 | ||
144 | struct fuse_rename_in { | |
145 | __u64 newdir; | |
146 | }; | |
147 | ||
148 | struct fuse_link_in { | |
149 | __u64 oldnodeid; | |
150 | }; | |
151 | ||
152 | struct fuse_setattr_in { | |
153 | __u32 valid; | |
06663267 | 154 | __u32 padding; |
9e6268db MS |
155 | struct fuse_attr attr; |
156 | }; | |
157 | ||
b6aeaded MS |
158 | struct fuse_open_in { |
159 | __u32 flags; | |
06663267 | 160 | __u32 padding; |
b6aeaded MS |
161 | }; |
162 | ||
163 | struct fuse_open_out { | |
164 | __u64 fh; | |
165 | __u32 open_flags; | |
06663267 | 166 | __u32 padding; |
b6aeaded MS |
167 | }; |
168 | ||
169 | struct fuse_release_in { | |
170 | __u64 fh; | |
171 | __u32 flags; | |
06663267 | 172 | __u32 padding; |
b6aeaded MS |
173 | }; |
174 | ||
175 | struct fuse_flush_in { | |
176 | __u64 fh; | |
177 | __u32 flush_flags; | |
06663267 | 178 | __u32 padding; |
b6aeaded MS |
179 | }; |
180 | ||
181 | struct fuse_read_in { | |
182 | __u64 fh; | |
183 | __u64 offset; | |
184 | __u32 size; | |
06663267 | 185 | __u32 padding; |
b6aeaded MS |
186 | }; |
187 | ||
188 | struct fuse_write_in { | |
189 | __u64 fh; | |
190 | __u64 offset; | |
191 | __u32 size; | |
192 | __u32 write_flags; | |
193 | }; | |
194 | ||
195 | struct fuse_write_out { | |
196 | __u32 size; | |
06663267 | 197 | __u32 padding; |
b6aeaded MS |
198 | }; |
199 | ||
e5e5558e MS |
200 | struct fuse_statfs_out { |
201 | struct fuse_kstatfs st; | |
202 | }; | |
203 | ||
b6aeaded MS |
204 | struct fuse_fsync_in { |
205 | __u64 fh; | |
206 | __u32 fsync_flags; | |
06663267 | 207 | __u32 padding; |
b6aeaded MS |
208 | }; |
209 | ||
92a8780e MS |
210 | struct fuse_setxattr_in { |
211 | __u32 size; | |
212 | __u32 flags; | |
213 | }; | |
214 | ||
215 | struct fuse_getxattr_in { | |
216 | __u32 size; | |
06663267 | 217 | __u32 padding; |
92a8780e MS |
218 | }; |
219 | ||
220 | struct fuse_getxattr_out { | |
221 | __u32 size; | |
06663267 | 222 | __u32 padding; |
92a8780e MS |
223 | }; |
224 | ||
334f485d MS |
225 | struct fuse_init_in_out { |
226 | __u32 major; | |
227 | __u32 minor; | |
228 | }; | |
229 | ||
230 | struct fuse_in_header { | |
231 | __u32 len; | |
232 | __u32 opcode; | |
233 | __u64 unique; | |
234 | __u64 nodeid; | |
235 | __u32 uid; | |
236 | __u32 gid; | |
237 | __u32 pid; | |
06663267 | 238 | __u32 padding; |
334f485d MS |
239 | }; |
240 | ||
241 | struct fuse_out_header { | |
242 | __u32 len; | |
243 | __s32 error; | |
244 | __u64 unique; | |
245 | }; | |
246 | ||
e5e5558e MS |
247 | struct fuse_dirent { |
248 | __u64 ino; | |
249 | __u64 off; | |
250 | __u32 namelen; | |
251 | __u32 type; | |
252 | char name[0]; | |
253 | }; | |
254 | ||
255 | #define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name) | |
256 | #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1)) | |
257 | #define FUSE_DIRENT_SIZE(d) \ | |
258 | FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) |