file_util_linux.cc revision b8cf94937c52feb53b55c39e3f82094d27de464c 
1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/files/file_util.h"
6
7#include <errno.h>
8#include <linux/magic.h>
9#include <sys/vfs.h>
10
11#include "base/files/file_path.h"
12
13namespace base {
14
15bool GetFileSystemType(const FilePath& path, FileSystemType* type) {
16  struct statfs statfs_buf;
17  if (statfs(path.value().c_str(), &statfs_buf) < 0) {
18    if (errno == ENOENT)
19      return false;
20    *type = FILE_SYSTEM_UNKNOWN;
21    return true;
22  }
23
24  // Not all possible |statfs_buf.f_type| values are in linux/magic.h.
25  // Missing values are copied from the statfs man page.
26  switch (statfs_buf.f_type) {
27    case 0:
28      *type = FILE_SYSTEM_0;
29      break;
30    case EXT2_SUPER_MAGIC:  // Also ext3 and ext4
31    case MSDOS_SUPER_MAGIC:
32    case REISERFS_SUPER_MAGIC:
33    case BTRFS_SUPER_MAGIC:
34    case 0x5346544E:  // NTFS
35    case 0x58465342:  // XFS
36    case 0x3153464A:  // JFS
37      *type = FILE_SYSTEM_ORDINARY;
38      break;
39    case NFS_SUPER_MAGIC:
40      *type = FILE_SYSTEM_NFS;
41      break;
42    case SMB_SUPER_MAGIC:
43    case 0xFF534D42:  // CIFS
44      *type = FILE_SYSTEM_SMB;
45      break;
46    case CODA_SUPER_MAGIC:
47      *type = FILE_SYSTEM_CODA;
48      break;
49    case HUGETLBFS_MAGIC:
50    case RAMFS_MAGIC:
51    case TMPFS_MAGIC:
52      *type = FILE_SYSTEM_MEMORY;
53      break;
54    case CGROUP_SUPER_MAGIC:
55      *type = FILE_SYSTEM_CGROUP;
56      break;
57    default:
58      *type = FILE_SYSTEM_OTHER;
59  }
60  return true;
61}
62
63}  // namespace base
64