sysdeps/unix/sysv/linux/linux_fsinfo.h

   1 /* Constants from kernel header for various FSes.
   2    Copyright (C) 1998-2024 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 */