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| 1 // Copyright (c) 2006-2008 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/os_file.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 namespace disk_cache { | |
| 10 | |
| 11 OSFile CreateOSFile(const std::wstring& name, int flags, bool* created) { | |
| 12 DWORD disposition = 0; | |
| 13 | |
| 14 if (flags & OS_FILE_OPEN) | |
| 15 disposition = OPEN_EXISTING; | |
| 16 | |
| 17 if (flags & OS_FILE_CREATE) { | |
| 18 DCHECK(!disposition); | |
| 19 disposition = CREATE_NEW; | |
| 20 } | |
| 21 | |
| 22 if (flags & OS_FILE_OPEN_ALWAYS) { | |
| 23 DCHECK(!disposition); | |
| 24 disposition = OPEN_ALWAYS; | |
| 25 } | |
| 26 | |
| 27 if (flags & OS_FILE_CREATE_ALWAYS) { | |
| 28 DCHECK(!disposition); | |
| 29 disposition = CREATE_ALWAYS; | |
| 30 } | |
| 31 | |
| 32 if (!disposition) { | |
| 33 NOTREACHED(); | |
| 34 return NULL; | |
| 35 } | |
| 36 | |
| 37 DWORD access = (flags & OS_FILE_READ) ? GENERIC_READ : 0; | |
| 38 if (flags & OS_FILE_WRITE) | |
| 39 access |= GENERIC_WRITE; | |
| 40 | |
| 41 DWORD sharing = (flags & OS_FILE_SHARE_READ) ? FILE_SHARE_READ : 0; | |
| 42 if (flags & OS_FILE_SHARE_WRITE) | |
| 43 access |= FILE_SHARE_WRITE; | |
| 44 | |
| 45 HANDLE file = CreateFile(name.c_str(), access, sharing, NULL, disposition, 0, | |
| 46 NULL); | |
| 47 | |
| 48 if ((flags & OS_FILE_OPEN_ALWAYS) && created && | |
| 49 INVALID_HANDLE_VALUE != file) { | |
| 50 *created = (ERROR_ALREADY_EXISTS != GetLastError()); | |
| 51 } | |
| 52 | |
| 53 return file; | |
| 54 } | |
| 55 | |
| 56 } // namespace disk_cache | |
| 57 | |
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Chromium Code Reviews
Issue 8843:
Add write and read/write support to FileStream (renamed from FileInputStream)... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/