15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/disk_cache/cache_util.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <windows.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/files/file_path.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 119ab5563a3196760eb381d102cbb2bc0f7abc6a50Ben Murdoch#include "base/message_loop/message_loop.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/win/scoped_handle.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace disk_cache { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool MoveCache(const base::FilePath& from_path, const base::FilePath& to_path) { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // I don't want to use the shell version of move because if something goes 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // wrong, that version will attempt to move file by file and fail at the end. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!MoveFileEx(from_path.value().c_str(), to_path.value().c_str(), 0)) { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(ERROR) << "Unable to move the cache: " << GetLastError(); 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool DeleteCacheFile(const base::FilePath& name) { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We do a simple delete, without ever falling back to SHFileOperation, as the 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // version from base does. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!DeleteFile(name.value().c_str())) { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There is an error, but we share delete access so let's see if there is a 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // file to open. Note that this code assumes that we have a handle to the 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // file at all times (even now), so nobody can have a handle that prevents 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // us from opening the file again (unless it was deleted). 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD sharing = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD access = SYNCHRONIZE; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::win::ScopedHandle file(CreateFile( 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) name.value().c_str(), access, sharing, NULL, OPEN_EXISTING, 0, NULL)); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (file.IsValid()) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Most likely there is no file to open... and that's what we wanted. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace disk_cache 47