Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | FUSE: Filesystem in Userspace |
| 3 | Copyright (C) 2001 Miklos Szeredi (mszeredi@inf.bme.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 | |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 11 | /** Version number of this interface */ |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 12 | #define FUSE_KERNEL_VERSION 3 |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 13 | |
Miklos Szeredi | 2f3d940 | 2003-12-15 12:11:33 +0000 | [diff] [blame] | 14 | /** Minor version number of this interface */ |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 15 | #define FUSE_KERNEL_MINOR_VERSION 1 |
Miklos Szeredi | 2f3d940 | 2003-12-15 12:11:33 +0000 | [diff] [blame] | 16 | |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 17 | /** The inode number of the root indode */ |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 18 | #define FUSE_ROOT_INO 1 |
| 19 | |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 20 | /** Opening this will yield a new control file */ |
| 21 | #define FUSE_DEV "/proc/fs/fuse/dev" |
| 22 | |
Miklos Szeredi | c40748a | 2004-02-20 16:38:45 +0000 | [diff] [blame] | 23 | /** The file containing the version in the form MAJOR.MINOR */ |
| 24 | #define FUSE_VERSION_FILE "/proc/fs/fuse/version" |
| 25 | |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 26 | /** Data passed to mount */ |
| 27 | struct fuse_mount_data { |
Miklos Szeredi | 8cffdb9 | 2001-11-09 14:49:18 +0000 | [diff] [blame] | 28 | /** The control file descriptor */ |
| 29 | int fd; |
| 30 | |
| 31 | /** The file type of the root inode */ |
| 32 | unsigned int rootmode; |
| 33 | |
| 34 | /** The user ID of the user initiating this mount */ |
| 35 | unsigned int uid; |
| 36 | |
| 37 | /** FUSE specific mount flags */ |
| 38 | unsigned int flags; |
| 39 | }; |
| 40 | |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 41 | /* FUSE mount flags: */ |
| 42 | |
| 43 | /** If the FUSE_DEFAULT_PERMISSIONS flag is given, the filesystem |
| 44 | module will check permissions based on the file mode. Otherwise no |
| 45 | permission checking is done in the kernel */ |
| 46 | #define FUSE_DEFAULT_PERMISSIONS (1 << 0) |
| 47 | |
| 48 | /** If the FUSE_ALLOW_OTHER flag is given, then not only the user |
| 49 | doing the mount will be allowed to access the filesystem */ |
| 50 | #define FUSE_ALLOW_OTHER (1 << 1) |
| 51 | |
Miklos Szeredi | da4e486 | 2003-09-08 11:14:11 +0000 | [diff] [blame] | 52 | /** If the FUSE_KERNEL_CACHE flag is given, then files will be cached |
| 53 | until the INVALIDATE operation is invoked */ |
| 54 | #define FUSE_KERNEL_CACHE (1 << 2) |
| 55 | |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 56 | /** Allow FUSE to combine reads into 64k chunks. This is useful if |
| 57 | the filesystem is better at handling large chunks. NOTE: in |
| 58 | current implementation the raw throughput is worse for large reads |
| 59 | than for small. */ |
| 60 | #define FUSE_LARGE_READ (1 << 3) |
| 61 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 62 | struct fuse_attr { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 63 | unsigned int mode; |
| 64 | unsigned int nlink; |
| 65 | unsigned int uid; |
| 66 | unsigned int gid; |
| 67 | unsigned int rdev; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 68 | unsigned long long size; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 69 | unsigned long blocks; |
| 70 | unsigned long atime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 71 | unsigned long atimensec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 72 | unsigned long mtime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 73 | unsigned long mtimensec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 74 | unsigned long ctime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 75 | unsigned long ctimensec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 76 | }; |
| 77 | |
Miklos Szeredi | 24ed945 | 2002-10-07 10:24:26 +0000 | [diff] [blame] | 78 | struct fuse_kstatfs { |
Miklos Szeredi | 18e75e4 | 2004-02-19 14:23:27 +0000 | [diff] [blame] | 79 | unsigned int bsize; |
| 80 | unsigned long long blocks; |
| 81 | unsigned long long bfree; |
| 82 | unsigned long long bavail; |
| 83 | unsigned long long files; |
| 84 | unsigned long long ffree; |
| 85 | unsigned int namelen; |
Miklos Szeredi | 24ed945 | 2002-10-07 10:24:26 +0000 | [diff] [blame] | 86 | }; |
| 87 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 88 | #define FATTR_MODE (1 << 0) |
| 89 | #define FATTR_UID (1 << 1) |
| 90 | #define FATTR_GID (1 << 2) |
| 91 | #define FATTR_SIZE (1 << 3) |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 92 | #define FATTR_ATIME (1 << 4) |
| 93 | #define FATTR_MTIME (1 << 5) |
| 94 | #define FATTR_CTIME (1 << 6) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 95 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 96 | enum fuse_opcode { |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 97 | FUSE_LOOKUP = 1, |
Miklos Szeredi | da4e486 | 2003-09-08 11:14:11 +0000 | [diff] [blame] | 98 | FUSE_FORGET = 2, /* no reply */ |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 99 | FUSE_GETATTR = 3, |
| 100 | FUSE_SETATTR = 4, |
| 101 | FUSE_READLINK = 5, |
| 102 | FUSE_SYMLINK = 6, |
| 103 | FUSE_GETDIR = 7, |
| 104 | FUSE_MKNOD = 8, |
| 105 | FUSE_MKDIR = 9, |
| 106 | FUSE_UNLINK = 10, |
| 107 | FUSE_RMDIR = 11, |
| 108 | FUSE_RENAME = 12, |
| 109 | FUSE_LINK = 13, |
| 110 | FUSE_OPEN = 14, |
| 111 | FUSE_READ = 15, |
| 112 | FUSE_WRITE = 16, |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 113 | FUSE_STATFS = 17, |
Miklos Szeredi | da4e486 | 2003-09-08 11:14:11 +0000 | [diff] [blame] | 114 | FUSE_RELEASE = 18, /* no reply */ |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 115 | FUSE_INVALIDATE = 19, /* user initiated */ |
| 116 | FUSE_FSYNC = 20 |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 117 | }; |
| 118 | |
| 119 | /* Conservative buffer size for the client */ |
| 120 | #define FUSE_MAX_IN 8192 |
| 121 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 122 | struct fuse_entry_out { |
| 123 | unsigned long ino; /* Inode number */ |
| 124 | unsigned long generation; /* Inode generation: ino:gen must |
| 125 | be unique for the fs's lifetime */ |
| 126 | unsigned long entry_valid; /* Cache timeout for the name */ |
| 127 | unsigned long entry_valid_nsec; |
| 128 | unsigned long attr_valid; /* Cache timeout for the attributes */ |
| 129 | unsigned long attr_valid_nsec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 130 | struct fuse_attr attr; |
| 131 | }; |
| 132 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 133 | struct fuse_forget_in { |
| 134 | int version; |
| 135 | }; |
| 136 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame^] | 137 | struct fuse_attr_out { |
| 138 | unsigned long attr_valid; /* Cache timeout for the attributes */ |
| 139 | unsigned long attr_valid_nsec; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 140 | struct fuse_attr attr; |
| 141 | }; |
| 142 | |
| 143 | struct fuse_getdir_out { |
| 144 | int fd; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 145 | }; |
| 146 | |
| 147 | struct fuse_mknod_in { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 148 | unsigned int mode; |
| 149 | unsigned int rdev; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 150 | }; |
| 151 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 152 | struct fuse_mkdir_in { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 153 | unsigned int mode; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 154 | }; |
| 155 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 156 | struct fuse_rename_in { |
| 157 | unsigned long newdir; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 158 | }; |
| 159 | |
| 160 | struct fuse_link_in { |
| 161 | unsigned long newdir; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 162 | }; |
| 163 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 164 | struct fuse_setattr_in { |
| 165 | struct fuse_attr attr; |
| 166 | unsigned int valid; |
| 167 | }; |
| 168 | |
| 169 | struct fuse_open_in { |
| 170 | unsigned int flags; |
| 171 | }; |
| 172 | |
| 173 | struct fuse_read_in { |
| 174 | unsigned long long offset; |
| 175 | unsigned int size; |
| 176 | }; |
| 177 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 178 | struct fuse_write_in { |
| 179 | unsigned long long offset; |
| 180 | unsigned int size; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 181 | }; |
| 182 | |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 183 | struct fuse_statfs_out { |
Miklos Szeredi | 24ed945 | 2002-10-07 10:24:26 +0000 | [diff] [blame] | 184 | struct fuse_kstatfs st; |
Mark Glines | d84b39a | 2002-01-07 16:32:02 +0000 | [diff] [blame] | 185 | }; |
| 186 | |
Miklos Szeredi | 5e43f2c | 2003-12-12 14:06:41 +0000 | [diff] [blame] | 187 | struct fuse_fsync_in { |
| 188 | int datasync; |
| 189 | }; |
| 190 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 191 | struct fuse_in_header { |
| 192 | int unique; |
| 193 | enum fuse_opcode opcode; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 194 | unsigned long ino; |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 195 | unsigned int uid; |
| 196 | unsigned int gid; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 197 | }; |
| 198 | |
| 199 | struct fuse_out_header { |
| 200 | int unique; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 201 | int error; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 202 | }; |
| 203 | |
Miklos Szeredi | da4e486 | 2003-09-08 11:14:11 +0000 | [diff] [blame] | 204 | struct fuse_user_header { |
| 205 | int unique; /* zero */ |
| 206 | enum fuse_opcode opcode; |
| 207 | unsigned long ino; |
| 208 | }; |
| 209 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 210 | struct fuse_dirent { |
| 211 | unsigned long ino; |
| 212 | unsigned short namelen; |
| 213 | unsigned char type; |
| 214 | char name[256]; |
| 215 | }; |
| 216 | |
| 217 | #define FUSE_NAME_OFFSET ((unsigned int) ((struct fuse_dirent *) 0)->name) |
| 218 | #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(long) - 1) & ~(sizeof(long) - 1)) |
| 219 | #define FUSE_DIRENT_SIZE(d) \ |
| 220 | FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) |
| 221 | |
| 222 | /* |
| 223 | * Local Variables: |
| 224 | * indent-tabs-mode: t |
| 225 | * c-basic-offset: 8 |
| 226 | * End: |
| 227 | */ |