1 /* Constants from kernel header for various FSes.
2 Copyright (C) 1998-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #ifndef _LINUX_FSINFO_H
20 #define _LINUX_FSINFO_H 1
21
22 /* These definitions come from the kernel headers. But we cannot
23 include the headers here because of type clashes. If new
24 filesystem types will become available we have to add the
25 appropriate definitions here. */
26
27 /* Constant that identifies the `adfs' filesystem. */
28 #define ADFS_SUPER_MAGIC 0xadf5
29
30 /* Constant that identifies the `affs' filesystem. */
31 #define AFFS_SUPER_MAGIC 0xadff
32
33 /* Constant that identifies the `afs' filesystem. */
34 #define AFS_SUPER_MAGIC 0x5346414F
35
36 /* Constant that identifies the `anon_inodefs' filesystem. */
37 #define ANON_INODE_FS_MAGIC 0x09041934
38
39 /* Constant that identifies the `autofs' filesystem. */
40 #define AUTOFS_SUPER_MAGIC 0x187
41
42 /* Constant that identifies the `bdev' filesystem. */
43 #define BDEVFS_MAGIC 0x62646576
44
45 /* Constant that identifies the `bfs' filesystem. */
46 #define BFS_MAGIC 0x1badface
47
48 /* Constant that identifies the `binfmt_misc' filesystem. */
49 #define BINFMTFS_MAGIC 0x42494e4d
50
51 /* Constant that identifies the `btrfs' filesystem. */
52 #define BTRFS_SUPER_MAGIC 0x9123683e
53
54 /* Constant that identifies the `btrfs_test_fs' filesystem. */
55 #define BTRFS_TEST_MAGIC 0x73727279
56
57 /* Constant that identifies the `cgroup' filesystem. */
58 #define CGROUP_SUPER_MAGIC 0x27e0eb
59
60 /* Constant that identifies the `coda' filesystem. */
61 #define CODA_SUPER_MAGIC 0x73757245
62
63 /* Constant that identifies the `coherent' filesystem. */
64 #define COH_SUPER_MAGIC 0x012ff7b7
65
66 /* Constant that identifies the `cramfs' filesystem. */
67 #define CRAMFS_MAGIC 0x28cd3d45
68
69 /* Constant that identifies the `cramfs' filesystem w/opposite endianness. */
70 #define CRAMFS_MAGIC_WEND 0x453dcd28
71
72 /* Constant that identifies the `debugfs' filesystem. */
73 #define DEBUGFS_MAGIC 0x64626720
74
75 /* Constant that identifies the `devfs' filesystem. */
76 #define DEVFS_SUPER_MAGIC 0x1373
77
78 /* Constant that identifies the `devpts' filesystem. */
79 #define DEVPTS_SUPER_MAGIC 0x1cd1
80
81 /* Constants that identifies the `ecryptfs' filesystem. */
82 #define ECRYPTFS_SUPER_MAGIC 0xf15f
83
84 /* Constants that identifies the `efs' filesystem. */
85 #define EFS_SUPER_MAGIC 0x414a53
86 #define EFS_MAGIC 0x072959
87
88 /* Constants that identifies the `evivar' filesystem. */
89 #define EFIVARFS_MAGIC 0xde5e81e4
90
91 /* Constant that identifies the `ext2' filesystem. */
92 #define EXT2_SUPER_MAGIC 0xef53
93
94 /* Constant that identifies the `ext3' filesystem. */
95 #define EXT3_SUPER_MAGIC 0xef53
96
97 /* Constant that identifies the `ext3' filesystem. */
98 #define EXT4_SUPER_MAGIC 0xef53
99
100 /* Constant that identifies the `f2fs' filesystem. */
101 #define F2FS_SUPER_MAGIC 0xf2f52010
102
103 /* Constant that identifies the `futexfs' filesystem. */
104 #define FUTEXFS_SUPER_MAGIC 0xBAD1DEA
105
106 /* Constant that identifies the `hostfs' filesystem. */
107 #define HOSTFS_SUPER_MAGIC 0x00c0ffee
108
109 /* Constant that identifies the `hpfs' filesystem. */
110 #define HPFS_SUPER_MAGIC 0xf995e849
111
112 /* Constant that identifies the `hugetlbfs' filesystem. */
113 #define HUGETLBFS_MAGIC 0x958458f6
114
115 /* Constant that identifies the `iso9660' filesystem. */
116 #define ISOFS_SUPER_MAGIC 0x9660
117
118 /* Constant that identifies the `jffs' filesystem. */
119 #define JFFS_SUPER_MAGIC 0x07c0
120
121 /* Constant that identifies the `jffs2' filesystem. */
122 #define JFFS2_SUPER_MAGIC 0x72b6
123
124 /* Constant that identifies the `jfs' filesystem. */
125 #define JFS_SUPER_MAGIC 0x3153464a
126
127 /* Constant that identifies the `logfs' filesystem. */
128 #define LOGFS_MAGIC_U32 0xc97e8168u
129
130 /* Constant that identifies the `lustre' filesystem. */
131 #define LUSTRE_SUPER_MAGIC 0x0BD00BD0
132
133 /* Constants that identify the `minix2' filesystem. */
134 #define MINIX2_SUPER_MAGIC 0x2468
135 #define MINIX2_SUPER_MAGIC2 0x2478
136
137 /* Constants that identify the `minix3' filesystem. */
138 #define MINIX3_SUPER_MAGIC 0x4d5a
139
140 /* Constants that identify the `minix' filesystem. */
141 #define MINIX_SUPER_MAGIC 0x137f
142 #define MINIX_SUPER_MAGIC2 0x138F
143
144 /* Constant that identifies the `msdos' filesystem. */
145 #define MSDOS_SUPER_MAGIC 0x4d44
146
147 /* Constant that identifies the `mtd_inodefs' filesystem. */
148 #define MTD_INODE_FS_MAGIC 0x11307854
149
150 /* Constant that identifies the `ncp' filesystem. */
151 #define NCP_SUPER_MAGIC 0x564c
152
153 /* Constant that identifies the `nilfs' filesystem. */
154 #define NILFS_SUPER_MAGIC 0x3434
155
156 /* Constant that identifies the `nfs' filesystem. */
157 #define NFS_SUPER_MAGIC 0x6969
158
159 /* Constant that identifies the `ntfs' filesystem. */
160 #define NTFS_SUPER_MAGIC 0x5346544e
161
162 /* Constant that identifies the `openpromfs' filesystem. */
163 #define OPENPROM_SUPER_MAGIC 0x9fa1
164
165 /* Constant that identifies the `pipefs' filesystem. */
166 #define PIPEFS_MAGIC 0x50495045
167
168 /* Constant that identifies the `proc' filesystem. */
169 #define PROC_SUPER_MAGIC 0x9fa0
170
171 /* Constant that identifies the `pstorefs' filesystem. */
172 #define PSTOREFS_MAGIC 0x6165676C
173
174 /* Constant that identifies the `qnx4' filesystem. */
175 #define QNX4_SUPER_MAGIC 0x002f
176
177 /* Constant that identifies the `qnx6' filesystem. */
178 #define QNX6_SUPER_MAGIC 0x68191122
179
180 /* Constant that identifies the `ramfs' filesystem. */
181 #define RAMFS_MAGIC 0x858458f6
182
183 /* Constant that identifies the `reiser' filesystem. */
184 #define REISERFS_SUPER_MAGIC 0x52654973
185
186 #define REISERFS_SUPER_MAGIC_STRING "ReIsErFs"
187 #define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
188 #define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
189
190 /* Constant that identifies the `romfs' filesystem. */
191 #define ROMFS_SUPER_MAGIC 0x7275
192
193 /* Constant that identifies the `securityfs' filesystem. */
194 #define SECURITYFS_MAGIC 0x73636673
195
196 /* Constant that identifies the `selinuxfs' filesystem. */
197 #define SELINUX_MAGIC 0xf97cff8c
198
199 /* Constant that identifies the `smackfs' filesystem. */
200 #define SMACK_MAGIC 0x43415d53 /* "SMAC" */
201
202 /* Constant that identifies the `shm' filesystem. */
203 #define SHMFS_SUPER_MAGIC 0x01021994
204
205 /* Constant that identifies the `smb' filesystem. */
206 #define SMB_SUPER_MAGIC 0x517b
207
208 /* Constant that identifies the `sockfs' filesystem. */
209 #define SOCKFS_MAGIC 0x534F434B
210
211 /* Constant that identifies the `squashfs' filesystem. */
212 #define SQUASHFS_MAGIC 0x73717368
213
214 /* Constant that identifies the end of stacks allocated by the kernel. */
215 #define STACK_END_MAGIC 0x57AC6E9D
216
217 /* Constant that identifies the `sysfs' filesystem. */
218 #define SYSFS_MAGIC 0x62656572
219
220 /* Constants that identify the `sysV' filesystem. */
221 #define SYSV2_SUPER_MAGIC 0x012ff7b6
222 #define SYSV4_SUPER_MAGIC 0x012ff7b5
223
224 /* Constant that identifies the `tmpfs' filesystem. */
225 #define TMPFS_MAGIC 0x01021994
226
227 /* Constant that identifies the `udf' filesystem. */
228 #define UDF_SUPER_MAGIC 0x15013346
229
230 /* Constant that identify the `ufs' filesystem. */
231 #define UFS_MAGIC 0x00011954
232 #define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
233
234 /* Constant that identifies the `usbdevfs' filesystem. */
235 #define USBDEVFS_SUPER_MAGIC 0x9fa2
236 #define USBDEVICE_SUPER_MAGIC 0x9fa2
237
238 /* Constant that identifies the `9p' filesystem. */
239 #define V9FS_MAGIC 0x01021997
240
241 /* Constant that identifies the `vxfs' filesystem. */
242 #define VXFS_SUPER_MAGIC 0xa501fcf5
243
244 /* Constant that identifies the `xenfs' filesystem. */
245 #define XENFS_SUPER_MAGIC 0xabba1974
246
247 /* Constant that identifies the `xenix' filesystem. */
248 #define XENIX_SUPER_MAGIC 0x012ff7b4
249
250 /* Constant that identifies the `xfs' filesystem. */
251 #define XFS_SUPER_MAGIC 0x58465342
252
253 /* Maximum link counts. */
254 #define COH_LINK_MAX 10000
255 #define EXT2_LINK_MAX 32000
256 #define EXT4_LINK_MAX 65000
257 #define F2FS_LINK_MAX 32000
258 #define LUSTRE_LINK_MAX EXT4_LINK_MAX
259 #define MINIX2_LINK_MAX 65530
260 #define MINIX_LINK_MAX 250
261 #define REISERFS_LINK_MAX 64535
262 #define SYSV_LINK_MAX 126 /* 127? 251? */
263 #define UFS_LINK_MAX EXT2_LINK_MAX
264 #define XENIX_LINK_MAX 126 /* ?? */
265 #define XFS_LINK_MAX 2147483647
266
267 /* The Linux kernel header mentioned this as a kind of generic value. */
268 #define LINUX_LINK_MAX 127
269
270
271 #endif /* linux_fsinfo.h */