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| 1 // Copyright (c) 2012 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 "net/disk_cache/cache_util.h" | |
| 6 | |
| 7 #include <windows.h> | |
| 8 | |
| 9 #include "base/files/file_path.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/message_loop/message_loop.h" | |
| 12 #include "base/win/scoped_handle.h" | |
| 13 | |
| 14 namespace disk_cache { | |
| 15 | |
| 16 bool MoveCache(const base::FilePath& from_path, const base::FilePath& to_path) { | |
| 17 // I don't want to use the shell version of move because if something goes | |
| 18 // wrong, that version will attempt to move file by file and fail at the end. | |
| 19 if (!MoveFileEx(from_path.value().c_str(), to_path.value().c_str(), 0)) { | |
| 20 LOG(ERROR) << "Unable to move the cache: " << GetLastError(); | |
| 21 return false; | |
| 22 } | |
| 23 return true; | |
| 24 } | |
| 25 | |
| 26 bool DeleteCacheFile(const base::FilePath& name) { | |
| 27 // We do a simple delete, without ever falling back to SHFileOperation, as the | |
| 28 // version from base does. | |
| 29 if (!DeleteFile(name.value().c_str())) { | |
| 30 // There is an error, but we share delete access so let's see if there is a | |
| 31 // file to open. Note that this code assumes that we have a handle to the | |
| 32 // file at all times (even now), so nobody can have a handle that prevents | |
| 33 // us from opening the file again (unless it was deleted). | |
| 34 DWORD sharing = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; | |
| 35 DWORD access = SYNCHRONIZE; | |
| 36 base::win::ScopedHandle file(CreateFile( | |
| 37 name.value().c_str(), access, sharing, NULL, OPEN_EXISTING, 0, NULL)); | |
| 38 if (file.IsValid()) | |
| 39 return false; | |
| 40 | |
| 41 // Most likely there is no file to open... and that's what we wanted. | |
| 42 } | |
| 43 return true; | |
| 44 } | |
| 45 | |
| 46 } // namespace disk_cache | |
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