2 FUSE: Filesystem in Userspace
3 Copyright (C) 2001-2005 Miklos Szeredi <miklos@szeredi.hu>
5 This program can be distributed under the terms of the GNU GPL.
9 /* This file defines the kernel interface of FUSE */
11 #include <asm/types.h>
13 /** Version number of this interface */
14 #define FUSE_KERNEL_VERSION 7
16 /** Minor version number of this interface */
17 #define FUSE_KERNEL_MINOR_VERSION 4
19 /** The node ID of the root inode */
20 #define FUSE_ROOT_ID 1
22 /** The major number of the fuse character device */
25 /** The minor number of the fuse character device */
26 #define FUSE_MINOR 229
28 /* Make sure all structures are padded to 64bit boundary, so 32bit
29 userspace works under 64bit kernels */
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)
70 * Flags returned by the OPEN request
72 * FOPEN_DIRECT_IO: bypass page cache for this open file
73 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
75 #define FOPEN_DIRECT_IO (1 << 0)
76 #define FOPEN_KEEP_CACHE (1 << 1)
80 FUSE_FORGET = 2, /* no reply */
100 FUSE_REMOVEXATTR = 24,
105 FUSE_RELEASEDIR = 29,
111 /* Conservative buffer size for the client */
112 #define FUSE_MAX_IN 8192
114 #define FUSE_NAME_MAX 1024
115 #define FUSE_SYMLINK_MAX 4096
116 #define FUSE_XATTR_SIZE_MAX 4096
118 struct fuse_entry_out {
119 __u64 nodeid; /* Inode ID */
120 __u64 generation; /* Inode generation: nodeid:gen must
121 be unique for the fs's lifetime */
122 __u64 entry_valid; /* Cache timeout for the name */
123 __u64 attr_valid; /* Cache timeout for the attributes */
124 __u32 entry_valid_nsec;
125 __u32 attr_valid_nsec;
126 struct fuse_attr attr;
129 struct fuse_forget_in {
133 struct fuse_attr_out {
134 __u64 attr_valid; /* Cache timeout for the attributes */
135 __u32 attr_valid_nsec;
137 struct fuse_attr attr;
140 struct fuse_mknod_in {
145 struct fuse_mkdir_in {
150 struct fuse_rename_in {
154 struct fuse_link_in {
158 struct fuse_setattr_in {
177 struct fuse_open_in {
182 struct fuse_open_out {
188 struct fuse_release_in {
194 struct fuse_flush_in {
200 struct fuse_read_in {
207 struct fuse_write_in {
214 struct fuse_write_out {
219 #define FUSE_COMPAT_STATFS_SIZE 48
221 struct fuse_statfs_out {
222 struct fuse_kstatfs st;
225 struct fuse_fsync_in {
231 struct fuse_setxattr_in {
236 struct fuse_getxattr_in {
241 struct fuse_getxattr_out {
246 struct fuse_access_in {
251 struct fuse_init_in_out {
256 struct fuse_in_header {
267 struct fuse_out_header {
281 #define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
282 #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
283 #define FUSE_DIRENT_SIZE(d) \
284 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)