ipc/chromium/src/base/platform_file_posix.cc@6474c204b198 (annotated)
ipc/chromium/src/base/platform_file_posix.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 <sys/stat.h> |
| michael@0 | 8 | #include <fcntl.h> |
| michael@0 | 9 | #include <errno.h> |
| michael@0 | 10 | #ifdef ANDROID |
| michael@0 | 11 | #include <linux/stat.h> |
| michael@0 | 12 | #endif |
| michael@0 | 13 | |
| michael@0 | 14 | #include "base/logging.h" |
| michael@0 | 15 | #include "base/string_util.h" |
| michael@0 | 16 | |
| michael@0 | 17 | namespace base { |
| michael@0 | 18 | |
| michael@0 | 19 | // TODO(erikkay): does it make sense to support PLATFORM_FILE_EXCLUSIVE_* here? |
| michael@0 | 20 | PlatformFile CreatePlatformFile(const std::wstring& name, |
| michael@0 | 21 | int flags, |
| michael@0 | 22 | bool* created) { |
| michael@0 | 23 | int open_flags = 0; |
| michael@0 | 24 | if (flags & PLATFORM_FILE_CREATE) |
| michael@0 | 25 | open_flags = O_CREAT | O_EXCL; |
| michael@0 | 26 | |
| michael@0 | 27 | if (flags & PLATFORM_FILE_CREATE_ALWAYS) { |
| michael@0 | 28 | DCHECK(!open_flags); |
| michael@0 | 29 | open_flags = O_CREAT | O_TRUNC; |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | if (!open_flags && !(flags & PLATFORM_FILE_OPEN) && |
| michael@0 | 33 | !(flags & PLATFORM_FILE_OPEN_ALWAYS)) { |
| michael@0 | 34 | NOTREACHED(); |
| michael@0 | 35 | errno = ENOTSUP; |
| michael@0 | 36 | return kInvalidPlatformFileValue; |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | if (flags & PLATFORM_FILE_WRITE && flags & PLATFORM_FILE_READ) { |
| michael@0 | 40 | open_flags |= O_RDWR; |
| michael@0 | 41 | } else if (flags & PLATFORM_FILE_WRITE) { |
| michael@0 | 42 | open_flags |= O_WRONLY; |
| michael@0 | 43 | } else if (!(flags & PLATFORM_FILE_READ)) { |
| michael@0 | 44 | NOTREACHED(); |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | DCHECK(O_RDONLY == 0); |
| michael@0 | 48 | |
| michael@0 | 49 | int descriptor = open(WideToUTF8(name).c_str(), open_flags, |
| michael@0 | 50 | S_IRUSR | S_IWUSR); |
| michael@0 | 51 | |
| michael@0 | 52 | if (flags & PLATFORM_FILE_OPEN_ALWAYS) { |
| michael@0 | 53 | if (descriptor > 0) { |
| michael@0 | 54 | if (created) |
| michael@0 | 55 | *created = false; |
| michael@0 | 56 | } else { |
| michael@0 | 57 | open_flags |= O_CREAT; |
| michael@0 | 58 | descriptor = open(WideToUTF8(name).c_str(), open_flags, |
| michael@0 | 59 | S_IRUSR | S_IWUSR); |
| michael@0 | 60 | if (created && descriptor > 0) |
| michael@0 | 61 | *created = true; |
| michael@0 | 62 | } |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | return descriptor; |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | } // namespace base |
