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| 1 // Copyright (c) 2011 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 "base/files/file.h" | |
| 6 #include "base/files/file_path.h" | |
| 7 #include "base/files/file_tracing.h" | |
| 8 #include "base/metrics/histogram.h" | |
| 9 #include "base/timer/elapsed_timer.h" | |
| 10 | |
| 11 namespace base { | |
| 12 | |
| 13 File::Info::Info() | |
| 14 : size(0), | |
| 15 is_directory(false), | |
| 16 is_symbolic_link(false) { | |
| 17 } | |
| 18 | |
| 19 File::Info::~Info() { | |
| 20 } | |
| 21 | |
| 22 File::File() | |
| 23 : error_details_(FILE_ERROR_FAILED), | |
| 24 created_(false), | |
| 25 async_(false) { | |
| 26 } | |
| 27 | |
| 28 #if !defined(OS_NACL) | |
| 29 File::File(const FilePath& path, uint32 flags) | |
| 30 : error_details_(FILE_OK), | |
| 31 created_(false), | |
| 32 async_(false) { | |
| 33 Initialize(path, flags); | |
| 34 } | |
| 35 #endif | |
| 36 | |
| 37 File::File(PlatformFile platform_file) | |
| 38 : file_(platform_file), | |
| 39 error_details_(FILE_OK), | |
| 40 created_(false), | |
| 41 async_(false) { | |
| 42 #if defined(OS_POSIX) | |
| 43 DCHECK_GE(platform_file, -1); | |
| 44 #endif | |
| 45 } | |
| 46 | |
| 47 File::File(Error error_details) | |
| 48 : error_details_(error_details), | |
| 49 created_(false), | |
| 50 async_(false) { | |
| 51 } | |
| 52 | |
| 53 File::File(RValue other) | |
| 54 : file_(other.object->TakePlatformFile()), | |
| 55 tracing_path_(other.object->tracing_path_), | |
| 56 error_details_(other.object->error_details()), | |
| 57 created_(other.object->created()), | |
| 58 async_(other.object->async_) {} | |
| 59 | |
| 60 File::~File() { | |
| 61 // Go through the AssertIOAllowed logic. | |
| 62 Close(); | |
| 63 } | |
| 64 | |
| 65 // static | |
| 66 File File::CreateForAsyncHandle(PlatformFile platform_file) { | |
| 67 File file(platform_file); | |
| 68 // It would be nice if we could validate that |platform_file| was opened with | |
| 69 // FILE_FLAG_OVERLAPPED on Windows but this doesn't appear to be possible. | |
| 70 file.async_ = true; | |
| 71 return file.Pass(); | |
| 72 } | |
| 73 | |
| 74 File& File::operator=(RValue other) { | |
| 75 if (this != other.object) { | |
| 76 Close(); | |
| 77 SetPlatformFile(other.object->TakePlatformFile()); | |
| 78 tracing_path_ = other.object->tracing_path_; | |
| 79 error_details_ = other.object->error_details(); | |
| 80 created_ = other.object->created(); | |
| 81 async_ = other.object->async_; | |
| 82 } | |
| 83 return *this; | |
| 84 } | |
| 85 | |
| 86 #if !defined(OS_NACL) | |
| 87 void File::Initialize(const FilePath& path, uint32 flags) { | |
| 88 if (path.ReferencesParent()) { | |
| 89 error_details_ = FILE_ERROR_ACCESS_DENIED; | |
| 90 return; | |
| 91 } | |
| 92 if (FileTracing::IsCategoryEnabled()) | |
| 93 tracing_path_ = path; | |
| 94 SCOPED_FILE_TRACE("Initialize"); | |
| 95 DoInitialize(path, flags); | |
| 96 } | |
| 97 #endif | |
| 98 | |
| 99 std::string File::ErrorToString(Error error) { | |
| 100 switch (error) { | |
| 101 case FILE_OK: | |
| 102 return "FILE_OK"; | |
| 103 case FILE_ERROR_FAILED: | |
| 104 return "FILE_ERROR_FAILED"; | |
| 105 case FILE_ERROR_IN_USE: | |
| 106 return "FILE_ERROR_IN_USE"; | |
| 107 case FILE_ERROR_EXISTS: | |
| 108 return "FILE_ERROR_EXISTS"; | |
| 109 case FILE_ERROR_NOT_FOUND: | |
| 110 return "FILE_ERROR_NOT_FOUND"; | |
| 111 case FILE_ERROR_ACCESS_DENIED: | |
| 112 return "FILE_ERROR_ACCESS_DENIED"; | |
| 113 case FILE_ERROR_TOO_MANY_OPENED: | |
| 114 return "FILE_ERROR_TOO_MANY_OPENED"; | |
| 115 case FILE_ERROR_NO_MEMORY: | |
| 116 return "FILE_ERROR_NO_MEMORY"; | |
| 117 case FILE_ERROR_NO_SPACE: | |
| 118 return "FILE_ERROR_NO_SPACE"; | |
| 119 case FILE_ERROR_NOT_A_DIRECTORY: | |
| 120 return "FILE_ERROR_NOT_A_DIRECTORY"; | |
| 121 case FILE_ERROR_INVALID_OPERATION: | |
| 122 return "FILE_ERROR_INVALID_OPERATION"; | |
| 123 case FILE_ERROR_SECURITY: | |
| 124 return "FILE_ERROR_SECURITY"; | |
| 125 case FILE_ERROR_ABORT: | |
| 126 return "FILE_ERROR_ABORT"; | |
| 127 case FILE_ERROR_NOT_A_FILE: | |
| 128 return "FILE_ERROR_NOT_A_FILE"; | |
| 129 case FILE_ERROR_NOT_EMPTY: | |
| 130 return "FILE_ERROR_NOT_EMPTY"; | |
| 131 case FILE_ERROR_INVALID_URL: | |
| 132 return "FILE_ERROR_INVALID_URL"; | |
| 133 case FILE_ERROR_IO: | |
| 134 return "FILE_ERROR_IO"; | |
| 135 case FILE_ERROR_MAX: | |
| 136 break; | |
| 137 } | |
| 138 | |
| 139 NOTREACHED(); | |
| 140 return ""; | |
| 141 } | |
| 142 | |
| 143 bool File::Flush() { | |
| 144 ElapsedTimer timer; | |
| 145 SCOPED_FILE_TRACE("Flush"); | |
| 146 bool return_value = DoFlush(); | |
| 147 UMA_HISTOGRAM_TIMES("PlatformFile.FlushTime", timer.Elapsed()); | |
| 148 return return_value; | |
| 149 } | |
| 150 | |
| 151 } // namespace base | |
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