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 47
