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.
9 /* This file defines the kernel interface of FUSE */
11 #include <asm/types.h>
12 #include <linux/major.h>
14 /** Version number of this interface */
15 #define FUSE_KERNEL_VERSION 7
17 /** Minor version number of this interface */
18 #define FUSE_KERNEL_MINOR_VERSION 7
20 /** The node ID of the root inode */
21 #define FUSE_ROOT_ID 1
23 /** The major number of the fuse character device */
24 #define FUSE_MAJOR MISC_MAJOR
26 /** The minor number of the fuse character device */
27 #define FUSE_MINOR 229
29 /* Make sure all structures are padded to 64bit boundary, so 32bit
30 userspace works under 64bit kernels */
62 struct fuse_file_lock {
70 * Bitmasks for fuse_setattr_in.valid
72 #define FATTR_MODE (1 << 0)
73 #define FATTR_UID (1 << 1)
74 #define FATTR_GID (1 << 2)
75 #define FATTR_SIZE (1 << 3)
76 #define FATTR_ATIME (1 << 4)
77 #define FATTR_MTIME (1 << 5)
78 #define FATTR_FH (1 << 6)
81 * Flags returned by the OPEN request
83 * FOPEN_DIRECT_IO: bypass page cache for this open file
84 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
86 #define FOPEN_DIRECT_IO (1 << 0)
87 #define FOPEN_KEEP_CACHE (1 << 1)
90 * INIT request/reply flags
92 #define FUSE_ASYNC_READ (1 << 0)
93 #define FUSE_POSIX_LOCKS (1 << 1)
97 FUSE_FORGET = 2, /* no reply */
117 FUSE_REMOVEXATTR = 24,
122 FUSE_RELEASEDIR = 29,
132 /* The read buffer is required to be at least 8k, but may be much larger */
133 #define FUSE_MIN_READ_BUFFER 8192
135 struct fuse_entry_out {
136 __u64 nodeid; /* Inode ID */
137 __u64 generation; /* Inode generation: nodeid:gen must
138 be unique for the fs's lifetime */
139 __u64 entry_valid; /* Cache timeout for the name */
140 __u64 attr_valid; /* Cache timeout for the attributes */
141 __u32 entry_valid_nsec;
142 __u32 attr_valid_nsec;
143 struct fuse_attr attr;
146 struct fuse_forget_in {
150 struct fuse_attr_out {
151 __u64 attr_valid; /* Cache timeout for the attributes */
152 __u32 attr_valid_nsec;
154 struct fuse_attr attr;
157 struct fuse_mknod_in {
162 struct fuse_mkdir_in {
167 struct fuse_rename_in {
171 struct fuse_link_in {
175 struct fuse_setattr_in {
194 struct fuse_open_in {
199 struct fuse_open_out {
205 struct fuse_release_in {
211 struct fuse_flush_in {
218 struct fuse_read_in {
225 struct fuse_write_in {
232 struct fuse_write_out {
237 #define FUSE_COMPAT_STATFS_SIZE 48
239 struct fuse_statfs_out {
240 struct fuse_kstatfs st;
243 struct fuse_fsync_in {
249 struct fuse_setxattr_in {
254 struct fuse_getxattr_in {
259 struct fuse_getxattr_out {
267 struct fuse_file_lock lk;
271 struct fuse_file_lock lk;
274 struct fuse_access_in {
279 struct fuse_init_in {
286 struct fuse_init_out {
295 struct fuse_interrupt_in {
299 struct fuse_in_header {
310 struct fuse_out_header {
324 #define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
325 #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
326 #define FUSE_DIRENT_SIZE(d) \
327 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)