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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, | |
82547981 MS |
102 | FUSE_RELEASEDIR = 29, |
103 | FUSE_FSYNCDIR = 30 | |
334f485d MS |
104 | }; |
105 | ||
106 | /* Conservative buffer size for the client */ | |
107 | #define FUSE_MAX_IN 8192 | |
108 | ||
e5e5558e | 109 | #define FUSE_NAME_MAX 1024 |
9e6268db | 110 | #define FUSE_SYMLINK_MAX 4096 |
92a8780e | 111 | #define FUSE_XATTR_SIZE_MAX 4096 |
e5e5558e MS |
112 | |
113 | struct fuse_entry_out { | |
114 | __u64 nodeid; /* Inode ID */ | |
115 | __u64 generation; /* Inode generation: nodeid:gen must | |
116 | be unique for the fs's lifetime */ | |
117 | __u64 entry_valid; /* Cache timeout for the name */ | |
118 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
119 | __u32 entry_valid_nsec; | |
120 | __u32 attr_valid_nsec; | |
121 | struct fuse_attr attr; | |
122 | }; | |
123 | ||
124 | struct fuse_forget_in { | |
9e6268db | 125 | __u64 nlookup; |
e5e5558e MS |
126 | }; |
127 | ||
128 | struct fuse_attr_out { | |
129 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
130 | __u32 attr_valid_nsec; | |
131 | __u32 dummy; | |
132 | struct fuse_attr attr; | |
133 | }; | |
134 | ||
9e6268db MS |
135 | struct fuse_mknod_in { |
136 | __u32 mode; | |
137 | __u32 rdev; | |
138 | }; | |
139 | ||
140 | struct fuse_mkdir_in { | |
141 | __u32 mode; | |
06663267 | 142 | __u32 padding; |
9e6268db MS |
143 | }; |
144 | ||
145 | struct fuse_rename_in { | |
146 | __u64 newdir; | |
147 | }; | |
148 | ||
149 | struct fuse_link_in { | |
150 | __u64 oldnodeid; | |
151 | }; | |
152 | ||
153 | struct fuse_setattr_in { | |
154 | __u32 valid; | |
06663267 | 155 | __u32 padding; |
9e6268db MS |
156 | struct fuse_attr attr; |
157 | }; | |
158 | ||
b6aeaded MS |
159 | struct fuse_open_in { |
160 | __u32 flags; | |
06663267 | 161 | __u32 padding; |
b6aeaded MS |
162 | }; |
163 | ||
164 | struct fuse_open_out { | |
165 | __u64 fh; | |
166 | __u32 open_flags; | |
06663267 | 167 | __u32 padding; |
b6aeaded MS |
168 | }; |
169 | ||
170 | struct fuse_release_in { | |
171 | __u64 fh; | |
172 | __u32 flags; | |
06663267 | 173 | __u32 padding; |
b6aeaded MS |
174 | }; |
175 | ||
176 | struct fuse_flush_in { | |
177 | __u64 fh; | |
178 | __u32 flush_flags; | |
06663267 | 179 | __u32 padding; |
b6aeaded MS |
180 | }; |
181 | ||
182 | struct fuse_read_in { | |
183 | __u64 fh; | |
184 | __u64 offset; | |
185 | __u32 size; | |
06663267 | 186 | __u32 padding; |
b6aeaded MS |
187 | }; |
188 | ||
189 | struct fuse_write_in { | |
190 | __u64 fh; | |
191 | __u64 offset; | |
192 | __u32 size; | |
193 | __u32 write_flags; | |
194 | }; | |
195 | ||
196 | struct fuse_write_out { | |
197 | __u32 size; | |
06663267 | 198 | __u32 padding; |
b6aeaded MS |
199 | }; |
200 | ||
e5e5558e MS |
201 | struct fuse_statfs_out { |
202 | struct fuse_kstatfs st; | |
203 | }; | |
204 | ||
b6aeaded MS |
205 | struct fuse_fsync_in { |
206 | __u64 fh; | |
207 | __u32 fsync_flags; | |
06663267 | 208 | __u32 padding; |
b6aeaded MS |
209 | }; |
210 | ||
92a8780e MS |
211 | struct fuse_setxattr_in { |
212 | __u32 size; | |
213 | __u32 flags; | |
214 | }; | |
215 | ||
216 | struct fuse_getxattr_in { | |
217 | __u32 size; | |
06663267 | 218 | __u32 padding; |
92a8780e MS |
219 | }; |
220 | ||
221 | struct fuse_getxattr_out { | |
222 | __u32 size; | |
06663267 | 223 | __u32 padding; |
92a8780e MS |
224 | }; |
225 | ||
334f485d MS |
226 | struct fuse_init_in_out { |
227 | __u32 major; | |
228 | __u32 minor; | |
229 | }; | |
230 | ||
231 | struct fuse_in_header { | |
232 | __u32 len; | |
233 | __u32 opcode; | |
234 | __u64 unique; | |
235 | __u64 nodeid; | |
236 | __u32 uid; | |
237 | __u32 gid; | |
238 | __u32 pid; | |
06663267 | 239 | __u32 padding; |
334f485d MS |
240 | }; |
241 | ||
242 | struct fuse_out_header { | |
243 | __u32 len; | |
244 | __s32 error; | |
245 | __u64 unique; | |
246 | }; | |
247 | ||
e5e5558e MS |
248 | struct fuse_dirent { |
249 | __u64 ino; | |
250 | __u64 off; | |
251 | __u32 namelen; | |
252 | __u32 type; | |
253 | char name[0]; | |
254 | }; | |
255 | ||
256 | #define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name) | |
257 | #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1)) | |
258 | #define FUSE_DIRENT_SIZE(d) \ | |
259 | FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) |