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 6
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/**
62 * Bitmasks for fuse_setattr_in.valid
63 */
64#define FATTR_MODE (1 << 0)
65#define FATTR_UID (1 << 1)
66#define FATTR_GID (1 << 2)
67#define FATTR_SIZE (1 << 3)
68#define FATTR_ATIME (1 << 4)
69#define FATTR_MTIME (1 << 5)
70#define FATTR_FH (1 << 6)
71
72/**
73 * Flags returned by the OPEN request
74 *
75 * FOPEN_DIRECT_IO: bypass page cache for this open file
76 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
77 */
78#define FOPEN_DIRECT_IO (1 << 0)
79#define FOPEN_KEEP_CACHE (1 << 1)
80
81/**
82 * INIT request/reply flags
83 */
84#define FUSE_ASYNC_READ (1 << 0)
85
86enum fuse_opcode {
87 FUSE_LOOKUP = 1,
88 FUSE_FORGET = 2, /* no reply */
89 FUSE_GETATTR = 3,
90 FUSE_SETATTR = 4,
91 FUSE_READLINK = 5,
92 FUSE_SYMLINK = 6,
93 FUSE_MKNOD = 8,
94 FUSE_MKDIR = 9,
95 FUSE_UNLINK = 10,
96 FUSE_RMDIR = 11,
97 FUSE_RENAME = 12,
98 FUSE_LINK = 13,
99 FUSE_OPEN = 14,
100 FUSE_READ = 15,
101 FUSE_WRITE = 16,
102 FUSE_STATFS = 17,
103 FUSE_RELEASE = 18,
104 FUSE_FSYNC = 20,
105 FUSE_SETXATTR = 21,
106 FUSE_GETXATTR = 22,
107 FUSE_LISTXATTR = 23,
108 FUSE_REMOVEXATTR = 24,
109 FUSE_FLUSH = 25,
110 FUSE_INIT = 26,
111 FUSE_OPENDIR = 27,
112 FUSE_READDIR = 28,
113 FUSE_RELEASEDIR = 29,
114 FUSE_FSYNCDIR = 30,
115 FUSE_ACCESS = 34,
116 FUSE_CREATE = 35
117};
118
119/* The read buffer is required to be at least 8k, but may be much larger */
120#define FUSE_MIN_READ_BUFFER 8192
121
122struct fuse_entry_out {
123 __u64 nodeid; /* Inode ID */
124 __u64 generation; /* Inode generation: nodeid:gen must
125 be unique for the fs's lifetime */
126 __u64 entry_valid; /* Cache timeout for the name */
127 __u64 attr_valid; /* Cache timeout for the attributes */
128 __u32 entry_valid_nsec;
129 __u32 attr_valid_nsec;
130 struct fuse_attr attr;
131};
132
133struct fuse_forget_in {
134 __u64 nlookup;
135};
136
137struct fuse_attr_out {
138 __u64 attr_valid; /* Cache timeout for the attributes */
139 __u32 attr_valid_nsec;
140 __u32 dummy;
141 struct fuse_attr attr;
142};
143
144struct fuse_mknod_in {
145 __u32 mode;
146 __u32 rdev;
147};
148
149struct fuse_mkdir_in {
150 __u32 mode;
151 __u32 padding;
152};
153
154struct fuse_rename_in {
155 __u64 newdir;
156};
157
158struct fuse_link_in {
159 __u64 oldnodeid;
160};
161
162struct fuse_setattr_in {
163 __u32 valid;
164 __u32 padding;
165 __u64 fh;
166 __u64 size;
167 __u64 unused1;
168 __u64 atime;
169 __u64 mtime;
170 __u64 unused2;
171 __u32 atimensec;
172 __u32 mtimensec;
173 __u32 unused3;
174 __u32 mode;
175 __u32 unused4;
176 __u32 uid;
177 __u32 gid;
178 __u32 unused5;
179};
180
181struct fuse_open_in {
182 __u32 flags;
183 __u32 mode;
184};
185
186struct fuse_open_out {
187 __u64 fh;
188 __u32 open_flags;
189 __u32 padding;
190};
191
192struct fuse_release_in {
193 __u64 fh;
194 __u32 flags;
195 __u32 padding;
196};
197
198struct fuse_flush_in {
199 __u64 fh;
200 __u32 flush_flags;
201 __u32 padding;
202};
203
204struct fuse_read_in {
205 __u64 fh;
206 __u64 offset;
207 __u32 size;
208 __u32 padding;
209};
210
211struct fuse_write_in {
212 __u64 fh;
213 __u64 offset;
214 __u32 size;
215 __u32 write_flags;
216};
217
218struct fuse_write_out {
219 __u32 size;
220 __u32 padding;
221};
222
223#define FUSE_COMPAT_STATFS_SIZE 48
224
225struct fuse_statfs_out {
226 struct fuse_kstatfs st;
227};
228
229struct fuse_fsync_in {
230 __u64 fh;
231 __u32 fsync_flags;
232 __u32 padding;
233};
234
235struct fuse_setxattr_in {
236 __u32 size;
237 __u32 flags;
238};
239
240struct fuse_getxattr_in {
241 __u32 size;
242 __u32 padding;
243};
244
245struct fuse_getxattr_out {
246 __u32 size;
247 __u32 padding;
248};
249
250struct fuse_access_in {
251 __u32 mask;
252 __u32 padding;
253};
254
255struct fuse_init_in {
256 __u32 major;
257 __u32 minor;
258 __u32 max_readahead;
259 __u32 flags;
260};
261
262struct fuse_init_out {
263 __u32 major;
264 __u32 minor;
265 __u32 max_readahead;
266 __u32 flags;
267 __u32 unused;
268 __u32 max_write;
269};
270
271struct fuse_in_header {
272 __u32 len;
273 __u32 opcode;
274 __u64 unique;
275 __u64 nodeid;
276 __u32 uid;
277 __u32 gid;
278 __u32 pid;
279 __u32 padding;
280};
281
282struct fuse_out_header {
283 __u32 len;
284 __s32 error;
285 __u64 unique;
286};
287
288struct fuse_dirent {
289 __u64 ino;
290 __u64 off;
291 __u32 namelen;
292 __u32 type;
293 char name[0];
294};
295
296#define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
297#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
298#define FUSE_DIRENT_SIZE(d) \
299 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)