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 2
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 */
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)
67 * Flags returned by the OPEN request
69 * FOPEN_DIRECT_IO: bypass page cache for this open file
70 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
72 #define FOPEN_DIRECT_IO (1 << 0)
73 #define FOPEN_KEEP_CACHE (1 << 1)
77 FUSE_FORGET = 2, /* no reply */
97 FUSE_REMOVEXATTR = 24,
102 FUSE_RELEASEDIR = 29,
106 /* Conservative buffer size for the client */
107 #define FUSE_MAX_IN 8192
109 #define FUSE_NAME_MAX 1024
110 #define FUSE_SYMLINK_MAX 4096
111 #define FUSE_XATTR_SIZE_MAX 4096
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;
124 struct fuse_forget_in {
128 struct fuse_attr_out {
129 __u64 attr_valid; /* Cache timeout for the attributes */
130 __u32 attr_valid_nsec;
132 struct fuse_attr attr;
135 struct fuse_mknod_in {
140 struct fuse_mkdir_in {
145 struct fuse_rename_in {
149 struct fuse_link_in {
153 struct fuse_setattr_in {
156 struct fuse_attr attr;
159 struct fuse_open_in {
164 struct fuse_open_out {
170 struct fuse_release_in {
176 struct fuse_flush_in {
182 struct fuse_read_in {
189 struct fuse_write_in {
196 struct fuse_write_out {
201 struct fuse_statfs_out {
202 struct fuse_kstatfs st;
205 struct fuse_fsync_in {
211 struct fuse_setxattr_in {
216 struct fuse_getxattr_in {
221 struct fuse_getxattr_out {
226 struct fuse_init_in_out {
231 struct fuse_in_header {
242 struct fuse_out_header {
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)