ipc/chromium/src/base/platform_file_win.cc@6474c204b198 (annotated)
ipc/chromium/src/base/platform_file_win.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #include "base/platform_file.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include "base/logging.h" |
| michael@0 | 8 | |
| michael@0 | 9 | namespace base { |
| michael@0 | 10 | |
| michael@0 | 11 | PlatformFile CreatePlatformFile(const std::wstring& name, |
| michael@0 | 12 | int flags, |
| michael@0 | 13 | bool* created) { |
| michael@0 | 14 | DWORD disposition = 0; |
| michael@0 | 15 | |
| michael@0 | 16 | if (flags & PLATFORM_FILE_OPEN) |
| michael@0 | 17 | disposition = OPEN_EXISTING; |
| michael@0 | 18 | |
| michael@0 | 19 | if (flags & PLATFORM_FILE_CREATE) { |
| michael@0 | 20 | DCHECK(!disposition); |
| michael@0 | 21 | disposition = CREATE_NEW; |
| michael@0 | 22 | } |
| michael@0 | 23 | |
| michael@0 | 24 | if (flags & PLATFORM_FILE_OPEN_ALWAYS) { |
| michael@0 | 25 | DCHECK(!disposition); |
| michael@0 | 26 | disposition = OPEN_ALWAYS; |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | if (flags & PLATFORM_FILE_CREATE_ALWAYS) { |
| michael@0 | 30 | DCHECK(!disposition); |
| michael@0 | 31 | disposition = CREATE_ALWAYS; |
| michael@0 | 32 | } |
| michael@0 | 33 | |
| michael@0 | 34 | if (!disposition) { |
| michael@0 | 35 | NOTREACHED(); |
| michael@0 | 36 | return NULL; |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | DWORD access = (flags & PLATFORM_FILE_READ) ? GENERIC_READ : 0; |
| michael@0 | 40 | if (flags & PLATFORM_FILE_WRITE) |
| michael@0 | 41 | access |= GENERIC_WRITE; |
| michael@0 | 42 | |
| michael@0 | 43 | DWORD sharing = (flags & PLATFORM_FILE_EXCLUSIVE_READ) ? 0 : FILE_SHARE_READ; |
| michael@0 | 44 | if (!(flags & PLATFORM_FILE_EXCLUSIVE_WRITE)) |
| michael@0 | 45 | sharing |= FILE_SHARE_WRITE; |
| michael@0 | 46 | |
| michael@0 | 47 | DWORD create_flags = 0; |
| michael@0 | 48 | if (flags & PLATFORM_FILE_ASYNC) |
| michael@0 | 49 | create_flags |= FILE_FLAG_OVERLAPPED; |
| michael@0 | 50 | |
| michael@0 | 51 | HANDLE file = CreateFile(name.c_str(), access, sharing, NULL, disposition, |
| michael@0 | 52 | create_flags, NULL); |
| michael@0 | 53 | |
| michael@0 | 54 | if ((flags & PLATFORM_FILE_OPEN_ALWAYS) && created && |
| michael@0 | 55 | INVALID_HANDLE_VALUE != file) { |
| michael@0 | 56 | *created = (ERROR_ALREADY_EXISTS != GetLastError()); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | return file; |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | } // namespace disk_cache |
