// 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/files/file_util.h"
|
|
#include <errno.h>
|
#include <linux/magic.h>
|
#include <stdint.h>
|
#include <sys/vfs.h>
|
|
#include "base/files/file_path.h"
|
|
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.
|
// In some platforms, |statfs_buf.f_type| is declared as signed, but some of
|
// the values will overflow it, causing narrowing warnings. Cast to the
|
// largest possible unsigned integer type to avoid it.
|
switch (static_cast<uintmax_t>(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
|
