1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/chromium/src/base/platform_file_win.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,62 @@
1.4 +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "base/platform_file.h"
1.9 +
1.10 +#include "base/logging.h"
1.11 +
1.12 +namespace base {
1.13 +
1.14 +PlatformFile CreatePlatformFile(const std::wstring& name,
1.15 + int flags,
1.16 + bool* created) {
1.17 + DWORD disposition = 0;
1.18 +
1.19 + if (flags & PLATFORM_FILE_OPEN)
1.20 + disposition = OPEN_EXISTING;
1.21 +
1.22 + if (flags & PLATFORM_FILE_CREATE) {
1.23 + DCHECK(!disposition);
1.24 + disposition = CREATE_NEW;
1.25 + }
1.26 +
1.27 + if (flags & PLATFORM_FILE_OPEN_ALWAYS) {
1.28 + DCHECK(!disposition);
1.29 + disposition = OPEN_ALWAYS;
1.30 + }
1.31 +
1.32 + if (flags & PLATFORM_FILE_CREATE_ALWAYS) {
1.33 + DCHECK(!disposition);
1.34 + disposition = CREATE_ALWAYS;
1.35 + }
1.36 +
1.37 + if (!disposition) {
1.38 + NOTREACHED();
1.39 + return NULL;
1.40 + }
1.41 +
1.42 + DWORD access = (flags & PLATFORM_FILE_READ) ? GENERIC_READ : 0;
1.43 + if (flags & PLATFORM_FILE_WRITE)
1.44 + access |= GENERIC_WRITE;
1.45 +
1.46 + DWORD sharing = (flags & PLATFORM_FILE_EXCLUSIVE_READ) ? 0 : FILE_SHARE_READ;
1.47 + if (!(flags & PLATFORM_FILE_EXCLUSIVE_WRITE))
1.48 + sharing |= FILE_SHARE_WRITE;
1.49 +
1.50 + DWORD create_flags = 0;
1.51 + if (flags & PLATFORM_FILE_ASYNC)
1.52 + create_flags |= FILE_FLAG_OVERLAPPED;
1.53 +
1.54 + HANDLE file = CreateFile(name.c_str(), access, sharing, NULL, disposition,
1.55 + create_flags, NULL);
1.56 +
1.57 + if ((flags & PLATFORM_FILE_OPEN_ALWAYS) && created &&
1.58 + INVALID_HANDLE_VALUE != file) {
1.59 + *created = (ERROR_ALREADY_EXISTS != GetLastError());
1.60 + }
1.61 +
1.62 + return file;
1.63 +}
1.64 +
1.65 +} // namespace disk_cache
