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 3
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};
57
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_FH (1 << 6)
65
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
75enum fuse_opcode {
76 FUSE_LOOKUP = 1,
77 FUSE_FORGET = 2, /* no reply */
78 FUSE_GETATTR = 3,
79 FUSE_SETATTR = 4,
80 FUSE_READLINK = 5,
81 FUSE_SYMLINK = 6,
82 FUSE_MKNOD = 8,
83 FUSE_MKDIR = 9,
84 FUSE_UNLINK = 10,
85 FUSE_RMDIR = 11,
86 FUSE_RENAME = 12,
87 FUSE_LINK = 13,
88 FUSE_OPEN = 14,
89 FUSE_READ = 15,
90 FUSE_WRITE = 16,
91 FUSE_STATFS = 17,
92 FUSE_RELEASE = 18,
93 FUSE_FSYNC = 20,
94 FUSE_SETXATTR = 21,
95 FUSE_GETXATTR = 22,
96 FUSE_LISTXATTR = 23,
97 FUSE_REMOVEXATTR = 24,
98 FUSE_FLUSH = 25,
99 FUSE_INIT = 26,
100 FUSE_OPENDIR = 27,
101 FUSE_READDIR = 28,
102 FUSE_RELEASEDIR = 29,
103 FUSE_FSYNCDIR = 30,
104 FUSE_ACCESS = 34,
105 FUSE_CREATE = 35
106};
107
108/* Conservative buffer size for the client */
109#define FUSE_MAX_IN 8192
110
111#define FUSE_NAME_MAX 1024
112#define FUSE_SYMLINK_MAX 4096
113#define FUSE_XATTR_SIZE_MAX 4096
114
115struct fuse_entry_out {
116 __u64 nodeid; /* Inode ID */
117 __u64 generation; /* Inode generation: nodeid:gen must
118 be unique for the fs's lifetime */
119 __u64 entry_valid; /* Cache timeout for the name */
120 __u64 attr_valid; /* Cache timeout for the attributes */
121 __u32 entry_valid_nsec;
122 __u32 attr_valid_nsec;
123 struct fuse_attr attr;
124};
125
126struct fuse_forget_in {
127 __u64 nlookup;
128};
129
130struct fuse_attr_out {
131 __u64 attr_valid; /* Cache timeout for the attributes */
132 __u32 attr_valid_nsec;
133 __u32 dummy;
134 struct fuse_attr attr;
135};
136
137struct fuse_mknod_in {
138 __u32 mode;
139 __u32 rdev;
140};
141
142struct fuse_mkdir_in {
143 __u32 mode;
144 __u32 padding;
145};
146
147struct fuse_rename_in {
148 __u64 newdir;
149};
150
151struct fuse_link_in {
152 __u64 oldnodeid;
153};
154
155struct fuse_setattr_in {
156 __u32 valid;
157 __u32 padding;
158 __u64 fh;
159 __u64 size;
160 __u64 unused1;
161 __u64 atime;
162 __u64 mtime;
163 __u64 unused2;
164 __u32 atimensec;
165 __u32 mtimensec;
166 __u32 unused3;
167 __u32 mode;
168 __u32 unused4;
169 __u32 uid;
170 __u32 gid;
171 __u32 unused5;
172};
173
174struct fuse_open_in {
175 __u32 flags;
176 __u32 mode;
177};
178
179struct fuse_open_out {
180 __u64 fh;
181 __u32 open_flags;
182 __u32 padding;
183};
184
185struct fuse_release_in {
186 __u64 fh;
187 __u32 flags;
188 __u32 padding;
189};
190
191struct fuse_flush_in {
192 __u64 fh;
193 __u32 flush_flags;
194 __u32 padding;
195};
196
197struct fuse_read_in {
198 __u64 fh;
199 __u64 offset;
200 __u32 size;
201 __u32 padding;
202};
203
204struct fuse_write_in {
205 __u64 fh;
206 __u64 offset;
207 __u32 size;
208 __u32 write_flags;
209};
210
211struct fuse_write_out {
212 __u32 size;
213 __u32 padding;
214};
215
216struct fuse_statfs_out {
217 struct fuse_kstatfs st;
218};
219
220struct fuse_fsync_in {
221 __u64 fh;
222 __u32 fsync_flags;
223 __u32 padding;
224};
225
226struct fuse_setxattr_in {
227 __u32 size;
228 __u32 flags;
229};
230
231struct fuse_getxattr_in {
232 __u32 size;
233 __u32 padding;
234};
235
236struct fuse_getxattr_out {
237 __u32 size;
238 __u32 padding;
239};
240
241struct fuse_access_in {
242 __u32 mask;
243 __u32 padding;
244};
245
246struct fuse_init_in_out {
247 __u32 major;
248 __u32 minor;
249};
250
251struct fuse_in_header {
252 __u32 len;
253 __u32 opcode;
254 __u64 unique;
255 __u64 nodeid;
256 __u32 uid;
257 __u32 gid;
258 __u32 pid;
259 __u32 padding;
260};
261
262struct fuse_out_header {
263 __u32 len;
264 __s32 error;
265 __u64 unique;
266};
267
268struct fuse_dirent {
269 __u64 ino;
270 __u64 off;
271 __u32 namelen;
272 __u32 type;
273 char name[0];
274};
275
276#define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
277#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
278#define FUSE_DIRENT_SIZE(d) \
279 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)