2 FUSE: Filesystem in Userspace
3 Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
5 This program can be distributed under the terms of the GNU GPL.
10 * This file defines the kernel interface of FUSE
15 * - new fuse_getattr_in input argument of GETATTR
18 #include <asm/types.h>
19 #include <linux/major.h>
21 /** Version number of this interface */
22 #define FUSE_KERNEL_VERSION 7
24 /** Minor version number of this interface */
25 #define FUSE_KERNEL_MINOR_VERSION 9
27 /** The node ID of the root inode */
28 #define FUSE_ROOT_ID 1
30 /** The major number of the fuse character device */
31 #define FUSE_MAJOR MISC_MAJOR
33 /** The minor number of the fuse character device */
34 #define FUSE_MINOR 229
36 /* Make sure all structures are padded to 64bit boundary, so 32bit
37 userspace works under 64bit kernels */
69 struct fuse_file_lock {
77 * Bitmasks for fuse_setattr_in.valid
79 #define FATTR_MODE (1 << 0)
80 #define FATTR_UID (1 << 1)
81 #define FATTR_GID (1 << 2)
82 #define FATTR_SIZE (1 << 3)
83 #define FATTR_ATIME (1 << 4)
84 #define FATTR_MTIME (1 << 5)
85 #define FATTR_FH (1 << 6)
86 #define FATTR_ATIME_NOW (1 << 7)
87 #define FATTR_MTIME_NOW (1 << 8)
90 * Flags returned by the OPEN request
92 * FOPEN_DIRECT_IO: bypass page cache for this open file
93 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
95 #define FOPEN_DIRECT_IO (1 << 0)
96 #define FOPEN_KEEP_CACHE (1 << 1)
99 * INIT request/reply flags
101 #define FUSE_ASYNC_READ (1 << 0)
102 #define FUSE_POSIX_LOCKS (1 << 1)
103 #define FUSE_FILE_OPS (1 << 2)
104 #define FUSE_ATOMIC_O_TRUNC (1 << 3)
109 #define FUSE_RELEASE_FLUSH (1 << 0)
114 #define FUSE_GETATTR_FH (1 << 0)
118 FUSE_FORGET = 2, /* no reply */
138 FUSE_REMOVEXATTR = 24,
143 FUSE_RELEASEDIR = 29,
155 /* The read buffer is required to be at least 8k, but may be much larger */
156 #define FUSE_MIN_READ_BUFFER 8192
158 struct fuse_entry_out {
159 __u64 nodeid; /* Inode ID */
160 __u64 generation; /* Inode generation: nodeid:gen must
161 be unique for the fs's lifetime */
162 __u64 entry_valid; /* Cache timeout for the name */
163 __u64 attr_valid; /* Cache timeout for the attributes */
164 __u32 entry_valid_nsec;
165 __u32 attr_valid_nsec;
166 struct fuse_attr attr;
169 struct fuse_forget_in {
173 struct fuse_getattr_in {
179 struct fuse_attr_out {
180 __u64 attr_valid; /* Cache timeout for the attributes */
181 __u32 attr_valid_nsec;
183 struct fuse_attr attr;
186 struct fuse_mknod_in {
191 struct fuse_mkdir_in {
196 struct fuse_rename_in {
200 struct fuse_link_in {
204 struct fuse_setattr_in {
223 struct fuse_open_in {
228 struct fuse_open_out {
234 struct fuse_release_in {
241 struct fuse_flush_in {
248 struct fuse_read_in {
255 struct fuse_write_in {
262 struct fuse_write_out {
267 #define FUSE_COMPAT_STATFS_SIZE 48
269 struct fuse_statfs_out {
270 struct fuse_kstatfs st;
273 struct fuse_fsync_in {
279 struct fuse_setxattr_in {
284 struct fuse_getxattr_in {
289 struct fuse_getxattr_out {
297 struct fuse_file_lock lk;
301 struct fuse_file_lock lk;
304 struct fuse_access_in {
309 struct fuse_init_in {
316 struct fuse_init_out {
325 struct fuse_interrupt_in {
329 struct fuse_bmap_in {
335 struct fuse_bmap_out {
339 struct fuse_in_header {
350 struct fuse_out_header {
364 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
365 #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
366 #define FUSE_DIRENT_SIZE(d) \
367 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)