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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_PLATFORM_FILE_H_ | 5 #ifndef BASE_PLATFORM_FILE_H_ |
6 #define BASE_PLATFORM_FILE_H_ | 6 #define BASE_PLATFORM_FILE_H_ |
7 | 7 |
8 #include "build/build_config.h" | 8 #include "build/build_config.h" |
9 #if defined(OS_WIN) | 9 #if defined(OS_WIN) |
10 #include <windows.h> | 10 #include <windows.h> |
11 #endif | 11 #endif |
12 | 12 |
13 #include <string> | 13 #include <string> |
14 | 14 |
15 #include "base/base_export.h" | 15 #include "base/base_export.h" |
16 #include "base/basictypes.h" | 16 #include "base/basictypes.h" |
17 #include "base/files/file_path.h" | 17 #include "base/files/file_path.h" |
18 #include "base/time.h" | 18 #include "base/time.h" |
19 | 19 |
20 namespace base { | 20 namespace base { |
21 | 21 |
22 #if defined(OS_WIN) | |
23 typedef HANDLE PlatformFile; | |
24 const PlatformFile kInvalidPlatformFileValue = INVALID_HANDLE_VALUE; | |
25 #elif defined(OS_POSIX) | |
26 typedef int PlatformFile; | |
27 const PlatformFile kInvalidPlatformFileValue = -1; | |
28 #endif | |
29 | |
30 // PLATFORM_FILE_(OPEN|CREATE).* are mutually exclusive. You should specify | 22 // PLATFORM_FILE_(OPEN|CREATE).* are mutually exclusive. You should specify |
31 // exactly one of the five (possibly combining with other flags) when opening | 23 // exactly one of the five (possibly combining with other flags) when opening |
32 // or creating a file. | 24 // or creating a file. |
33 enum PlatformFileFlags { | 25 enum PlatformFileFlags { |
34 PLATFORM_FILE_OPEN = 1 << 0, // Opens a file, only if it exists. | 26 PLATFORM_FILE_OPEN = 1 << 0, // Opens a file, only if it exists. |
35 PLATFORM_FILE_CREATE = 1 << 1, // Creates a new file, only if it | 27 PLATFORM_FILE_CREATE = 1 << 1, // Creates a new file, only if it |
36 // does not already exist. | 28 // does not already exist. |
37 PLATFORM_FILE_OPEN_ALWAYS = 1 << 2, // May create a new file. | 29 PLATFORM_FILE_OPEN_ALWAYS = 1 << 2, // May create a new file. |
38 PLATFORM_FILE_CREATE_ALWAYS = 1 << 3, // May overwrite an old file. | 30 PLATFORM_FILE_CREATE_ALWAYS = 1 << 3, // May overwrite an old file. |
39 PLATFORM_FILE_OPEN_TRUNCATED = 1 << 4, // Opens a file and truncates it, | 31 PLATFORM_FILE_OPEN_TRUNCATED = 1 << 4, // Opens a file and truncates it, |
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112 // The last modified time of a file. | 104 // The last modified time of a file. |
113 base::Time last_modified; | 105 base::Time last_modified; |
114 | 106 |
115 // The last accessed time of a file. | 107 // The last accessed time of a file. |
116 base::Time last_accessed; | 108 base::Time last_accessed; |
117 | 109 |
118 // The creation time of a file. | 110 // The creation time of a file. |
119 base::Time creation_time; | 111 base::Time creation_time; |
120 }; | 112 }; |
121 | 113 |
| 114 #if defined(OS_WIN) |
| 115 typedef HANDLE PlatformFile; |
| 116 const PlatformFile kInvalidPlatformFileValue = INVALID_HANDLE_VALUE; |
| 117 PlatformFileError LastErrorToPlatformFileError(DWORD saved_errno); |
| 118 #elif defined(OS_POSIX) |
| 119 typedef int PlatformFile; |
| 120 const PlatformFile kInvalidPlatformFileValue = -1; |
| 121 PlatformFileError ErrnoToPlatformFileError(int saved_errno); |
| 122 #endif |
| 123 |
122 // Creates or opens the given file. If |created| is provided, it will be set to | 124 // Creates or opens the given file. If |created| is provided, it will be set to |
123 // true if a new file was created [or an old one truncated to zero length to | 125 // true if a new file was created [or an old one truncated to zero length to |
124 // simulate a new file, which can happen with PLATFORM_FILE_CREATE_ALWAYS], and | 126 // simulate a new file, which can happen with PLATFORM_FILE_CREATE_ALWAYS], and |
125 // false otherwise. |error| can be NULL. | 127 // false otherwise. |error| can be NULL. |
126 // | 128 // |
127 // This function fails with 'access denied' if the |name| contains path | 129 // This function fails with 'access denied' if the |name| contains path |
128 // traversal ('..') components. | 130 // traversal ('..') components. |
129 BASE_EXPORT PlatformFile CreatePlatformFile(const FilePath& name, | 131 BASE_EXPORT PlatformFile CreatePlatformFile(const FilePath& name, |
130 int flags, | 132 int flags, |
131 bool* created, | 133 bool* created, |
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238 return temp; | 240 return temp; |
239 } | 241 } |
240 | 242 |
241 private: | 243 private: |
242 PlatformFile* value_; | 244 PlatformFile* value_; |
243 }; | 245 }; |
244 | 246 |
245 } // namespace base | 247 } // namespace base |
246 | 248 |
247 #endif // BASE_PLATFORM_FILE_H_ | 249 #endif // BASE_PLATFORM_FILE_H_ |
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