file_util_linux.cc revision ddb351dbec246cf1fab5ec20d2d5520909041de1 
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/file_util.h"
6
7#include "base/file_path.h"
8
9#include <errno.h>
10#include <sys/vfs.h>
11
12namespace file_util {
13
14bool GetFileSystemType(const FilePath& path, FileSystemType* type) {
15  struct statfs statfs_buf;
16  if (statfs(path.value().c_str(), &statfs_buf) < 0) {
17    if (errno == ENOENT)
18      return false;
19    *type = FILE_SYSTEM_UNKNOWN;
20    return true;
21  }
22
23  // While you would think the possible values of f_type would be available
24  // in a header somewhere, it appears that is not the case.  These values
25  // 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 0xEF53:  // ext2, ext3.
31    case 0x4D44:  // dos
32    case 0x5346544E:  // NFTS
33    case 0x52654973:  // reiser
34    case 0x58465342:  // XFS
35    case 0x9123683E:  // btrfs
36    case 0x3153464A:  // JFS
37      *type = FILE_SYSTEM_ORDINARY;
38      break;
39    case 0x6969:  // NFS
40      *type = FILE_SYSTEM_NFS;
41      break;
42    case 0xFF534D42:  // CIFS
43    case 0x517B:  // SMB
44      *type = FILE_SYSTEM_SMB;
45      break;
46    case 0x73757245:  // Coda
47      *type = FILE_SYSTEM_CODA;
48      break;
49    case 0x858458f6:  // ramfs
50    case 0x01021994:  // tmpfs
51      *type = FILE_SYSTEM_MEMORY;
52      break;
53    case 0x27e0eb: // CGROUP
54      *type = FILE_SYSTEM_CGROUP;
55      break;
56    default:
57      *type = FILE_SYSTEM_OTHER;
58  }
59  return true;
60}
61
62}  // namespace
63