Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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 */
14#define FUSE_KERNEL_VERSION 7
15
16/** Minor version number of this interface */
17#define FUSE_KERNEL_MINOR_VERSION 5
18
19/** The node ID of the root inode */
20#define FUSE_ROOT_ID 1
21
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
28/* Make sure all structures are padded to 64bit boundary, so 32bit
29 userspace works under 64bit kernels */
30
31struct 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
48struct fuse_kstatfs {
49 __u64 blocks;
50 __u64 bfree;
51 __u64 bavail;
52 __u64 files;
53 __u64 ffree;
54 __u32 bsize;
55 __u32 namelen;
56 __u32 frsize;
57 __u32 padding;
58 __u32 spare[6];
59};
60
61#define FATTR_MODE (1 << 0)
62#define FATTR_UID (1 << 1)
63#define FATTR_GID (1 << 2)
64#define FATTR_SIZE (1 << 3)
65#define FATTR_ATIME (1 << 4)
66#define FATTR_MTIME (1 << 5)
67#define FATTR_FH (1 << 6)
68
69/**
70 * Flags returned by the OPEN request
71 *
72 * FOPEN_DIRECT_IO: bypass page cache for this open file
73 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
74 */
75#define FOPEN_DIRECT_IO (1 << 0)
76#define FOPEN_KEEP_CACHE (1 << 1)
77
78enum fuse_opcode {
79 FUSE_LOOKUP = 1,
80 FUSE_FORGET = 2, /* no reply */
81 FUSE_GETATTR = 3,
82 FUSE_SETATTR = 4,
83 FUSE_READLINK = 5,
84 FUSE_SYMLINK = 6,
85 FUSE_MKNOD = 8,
86 FUSE_MKDIR = 9,
87 FUSE_UNLINK = 10,
88 FUSE_RMDIR = 11,
89 FUSE_RENAME = 12,
90 FUSE_LINK = 13,
91 FUSE_OPEN = 14,
92 FUSE_READ = 15,
93 FUSE_WRITE = 16,
94 FUSE_STATFS = 17,
95 FUSE_RELEASE = 18,
96 FUSE_FSYNC = 20,
97 FUSE_SETXATTR = 21,
98 FUSE_GETXATTR = 22,
99 FUSE_LISTXATTR = 23,
100 FUSE_REMOVEXATTR = 24,
101 FUSE_FLUSH = 25,
102 FUSE_INIT = 26,
103 FUSE_OPENDIR = 27,
104 FUSE_READDIR = 28,
105 FUSE_RELEASEDIR = 29,
106 FUSE_FSYNCDIR = 30,
107 FUSE_ACCESS = 34,
108 FUSE_CREATE = 35
109};
110
111/* The read buffer is required to be at least 8k, but may be much larger */
112#define FUSE_MIN_READ_BUFFER 8192
113
114struct fuse_entry_out {
115 __u64 nodeid; /* Inode ID */
116 __u64 generation; /* Inode generation: nodeid:gen must
117 be unique for the fs's lifetime */
118 __u64 entry_valid; /* Cache timeout for the name */
119 __u64 attr_valid; /* Cache timeout for the attributes */
120 __u32 entry_valid_nsec;
121 __u32 attr_valid_nsec;
122 struct fuse_attr attr;
123};
124
125struct fuse_forget_in {
126 __u64 nlookup;
127};
128
129struct fuse_attr_out {
130 __u64 attr_valid; /* Cache timeout for the attributes */
131 __u32 attr_valid_nsec;
132 __u32 dummy;
133 struct fuse_attr attr;
134};
135
136struct fuse_mknod_in {
137 __u32 mode;
138 __u32 rdev;
139};
140
141struct fuse_mkdir_in {
142 __u32 mode;
143 __u32 padding;
144};
145
146struct fuse_rename_in {
147 __u64 newdir;
148};
149
150struct fuse_link_in {
151 __u64 oldnodeid;
152};
153
154struct fuse_setattr_in {
155 __u32 valid;
156 __u32 padding;
157 __u64 fh;
158 __u64 size;
159 __u64 unused1;
160 __u64 atime;
161 __u64 mtime;
162 __u64 unused2;
163 __u32 atimensec;
164 __u32 mtimensec;
165 __u32 unused3;
166 __u32 mode;
167 __u32 unused4;
168 __u32 uid;
169 __u32 gid;
170 __u32 unused5;
171};
172
173struct fuse_open_in {
174 __u32 flags;
175 __u32 mode;
176};
177
178struct fuse_open_out {
179 __u64 fh;
180 __u32 open_flags;
181 __u32 padding;
182};
183
184struct fuse_release_in {
185 __u64 fh;
186 __u32 flags;
187 __u32 padding;
188};
189
190struct fuse_flush_in {
191 __u64 fh;
192 __u32 flush_flags;
193 __u32 padding;
194};
195
196struct fuse_read_in {
197 __u64 fh;
198 __u64 offset;
199 __u32 size;
200 __u32 padding;
201};
202
203struct fuse_write_in {
204 __u64 fh;
205 __u64 offset;
206 __u32 size;
207 __u32 write_flags;
208};
209
210struct fuse_write_out {
211 __u32 size;
212 __u32 padding;
213};
214
215#define FUSE_COMPAT_STATFS_SIZE 48
216
217struct fuse_statfs_out {
218 struct fuse_kstatfs st;
219};
220
221struct fuse_fsync_in {
222 __u64 fh;
223 __u32 fsync_flags;
224 __u32 padding;
225};
226
227struct fuse_setxattr_in {
228 __u32 size;
229 __u32 flags;
230};
231
232struct fuse_getxattr_in {
233 __u32 size;
234 __u32 padding;
235};
236
237struct fuse_getxattr_out {
238 __u32 size;
239 __u32 padding;
240};
241
242struct fuse_access_in {
243 __u32 mask;
244 __u32 padding;
245};
246
247struct fuse_init_in {
248 __u32 major;
249 __u32 minor;
250};
251
252struct fuse_init_out {
253 __u32 major;
254 __u32 minor;
255 __u32 unused[3];
256 __u32 max_write;
257};
258
259struct fuse_in_header {
260 __u32 len;
261 __u32 opcode;
262 __u64 unique;
263 __u64 nodeid;
264 __u32 uid;
265 __u32 gid;
266 __u32 pid;
267 __u32 padding;
268};
269
270struct fuse_out_header {
271 __u32 len;
272 __s32 error;
273 __u64 unique;
274};
275
276struct fuse_dirent {
277 __u64 ino;
278 __u64 off;
279 __u32 namelen;
280 __u32 type;
281 char name[0];
282};
283
284#define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
285#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
286#define FUSE_DIRENT_SIZE(d) \
287 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)