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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/file_util.h"
#include <errno.h>
#include <linux/magic.h>
#include <sys/vfs.h>
#include "base/files/file_path.h"
// Make sure some of the newer macros from magic.h are defined.
// TODO(mostynb@opera.com): remove this after 2014.
#ifndef BTRFS_SUPER_MAGIC
#define BTRFS_SUPER_MAGIC 0x9123683E
#endif
#ifndef HUGETLBFS_MAGIC
#define HUGETLBFS_MAGIC 0x958458f6
#endif
#ifndef RAMFS_MAGIC
#define RAMFS_MAGIC 0x858458f6
#endif
#ifndef TMPFS_MAGIC
#define TMPFS_MAGIC 0x01021994
#endif
namespace base {
bool GetFileSystemType(const FilePath& path, FileSystemType* type) {
struct statfs statfs_buf;
if (statfs(path.value().c_str(), &statfs_buf) < 0) {
if (errno == ENOENT)
return false;
*type = FILE_SYSTEM_UNKNOWN;
return true;
}
// Not all possible |statfs_buf.f_type| values are in linux/magic.h.
// Missing values are copied from the statfs man page.
switch (statfs_buf.f_type) {
case 0:
*type = FILE_SYSTEM_0;
break;
case EXT2_SUPER_MAGIC: // Also ext3 and ext4
case MSDOS_SUPER_MAGIC:
case REISERFS_SUPER_MAGIC:
case BTRFS_SUPER_MAGIC:
case 0x5346544E: // NTFS
case 0x58465342: // XFS
case 0x3153464A: // JFS
*type = FILE_SYSTEM_ORDINARY;
break;
case NFS_SUPER_MAGIC:
*type = FILE_SYSTEM_NFS;
break;
case SMB_SUPER_MAGIC:
case 0xFF534D42: // CIFS
*type = FILE_SYSTEM_SMB;
break;
case CODA_SUPER_MAGIC:
*type = FILE_SYSTEM_CODA;
break;
case HUGETLBFS_MAGIC:
case RAMFS_MAGIC:
case TMPFS_MAGIC:
*type = FILE_SYSTEM_MEMORY;
break;
case CGROUP_SUPER_MAGIC:
*type = FILE_SYSTEM_CGROUP;
break;
default:
*type = FILE_SYSTEM_OTHER;
}
return true;
}
} // namespace base
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