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 <stdint.h> 10 #include <sys/vfs.h> 11 12 #include "base/files/file_path.h" 13 14 namespace base { 15 16 bool GetFileSystemType(const FilePath& path, FileSystemType* type) { 17 struct statfs statfs_buf; 18 if (statfs(path.value().c_str(), &statfs_buf) < 0) { 19 if (errno == ENOENT) 20 return false; 21 *type = FILE_SYSTEM_UNKNOWN; 22 return true; 23 } 24 25 // Not all possible |statfs_buf.f_type| values are in linux/magic.h. 26 // Missing values are copied from the statfs man page. 27 switch (static_cast<uintmax_t>(statfs_buf.f_type)) { 28 case 0: 29 *type = FILE_SYSTEM_0; 30 break; 31 case EXT2_SUPER_MAGIC: // Also ext3 and ext4 32 case MSDOS_SUPER_MAGIC: 33 case REISERFS_SUPER_MAGIC: 34 case BTRFS_SUPER_MAGIC: 35 case 0x5346544E: // NTFS 36 case 0x58465342: // XFS 37 case 0x3153464A: // JFS 38 *type = FILE_SYSTEM_ORDINARY; 39 break; 40 case NFS_SUPER_MAGIC: 41 *type = FILE_SYSTEM_NFS; 42 break; 43 case SMB_SUPER_MAGIC: 44 case 0xFF534D42: // CIFS 45 *type = FILE_SYSTEM_SMB; 46 break; 47 case CODA_SUPER_MAGIC: 48 *type = FILE_SYSTEM_CODA; 49 break; 50 case HUGETLBFS_MAGIC: 51 case RAMFS_MAGIC: 52 case TMPFS_MAGIC: 53 *type = FILE_SYSTEM_MEMORY; 54 break; 55 case CGROUP_SUPER_MAGIC: 56 *type = FILE_SYSTEM_CGROUP; 57 break; 58 default: 59 *type = FILE_SYSTEM_OTHER; 60 } 61 return true; 62 } 63 64 } // namespace base 65
