ceph/src/seastar/include/seastar/util/internal/magic.hh

   1 /*
   2  * This file is open source software, licensed to you under the terms
   3  * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
   4  * distributed with this work for additional information regarding copyright
   5  * ownership.  You may not use this file except in compliance with the License.
   6  *
   7  * You may obtain a copy of the License at
   8  *
   9  *   http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing,
  12  * software distributed under the License is distributed on an
  13  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14  * KIND, either express or implied.  See the License for the
  15  * specific language governing permissions and limitations
  16  * under the License.
  17  */
  18 /*
  19  * Copyright (C) 2022 ScyllaDB.
  20  */
  21
  22 #pragma once
  23
  24 #include <linux/magic.h>
  25
  26 namespace seastar {
  27
  28 #ifndef XFS_SUPER_MAGIC
  29 #define XFS_SUPER_MAGIC 0x58465342
  30 #endif
  31
  32 #ifndef EXT2_SUPER_MAGIC
  33 #define EXT2_SUPER_MAGIC 0xEF53
  34 #endif
  35
  36 #ifndef EXT3_SUPER_MAGIC
  37 #define EXT3_SUPER_MAGIC 0xEF53
  38 #endif
  39
  40 #ifndef EXT4_SUPER_MAGIC
  41 #define EXT4_SUPER_MAGIC 0xEF53
  42 #endif
  43
  44 #ifndef NFS_SUPER_MAGIC
  45 #define NFS_SUPER_MAGIC 0x6969
  46 #endif
  47
  48 #ifndef TMPFS_MAGIC
  49 #define TMPFS_MAGIC 0x01021994
  50 #endif
  51
  52 #ifndef FUSE_SUPER_MAGIC
  53 #define FUSE_SUPER_MAGIC 0x65735546
  54 #endif
  55
  56 #ifndef BTRFS_SUPER_MAGIC
  57 #define BTRFS_SUPER_MAGIC 0x9123683E
  58 #endif
  59
  60 #ifndef HFS_SUPER_MAGIC
  61 #define HFS_SUPER_MAGIC 0x4244
  62 #endif
  63
  64 namespace internal {
  65
  66 class fs_magic {
  67 public:
  68     static constexpr unsigned long xfs = XFS_SUPER_MAGIC;
  69     static constexpr unsigned long ext2 = EXT2_SUPER_MAGIC;
  70     static constexpr unsigned long ext3 = EXT3_SUPER_MAGIC;
  71     static constexpr unsigned long ext4 = EXT4_SUPER_MAGIC;
  72     static constexpr unsigned long nfs = NFS_SUPER_MAGIC;
  73     static constexpr unsigned long tmpfs = TMPFS_MAGIC;
  74     static constexpr unsigned long fuse = FUSE_SUPER_MAGIC;
  75     static constexpr unsigned long btrfs = BTRFS_SUPER_MAGIC;
  76     static constexpr unsigned long hfs = HFS_SUPER_MAGIC;
  77 };
  78
  79 } // internal namespace
  80
  81 } // seastar namespace