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1 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium OS 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_UTILS_H__ | 5 #ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_UTILS_H__ |
6 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_UTILS_H__ | 6 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_UTILS_H__ |
7 | 7 |
8 #include <errno.h> | 8 #include <errno.h> |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
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287 ~ScopedExt2fsCloser() { ext2fs_close(filsys_); } | 287 ~ScopedExt2fsCloser() { ext2fs_close(filsys_); } |
288 | 288 |
289 private: | 289 private: |
290 ext2_filsys filsys_; | 290 ext2_filsys filsys_; |
291 DISALLOW_COPY_AND_ASSIGN(ScopedExt2fsCloser); | 291 DISALLOW_COPY_AND_ASSIGN(ScopedExt2fsCloser); |
292 }; | 292 }; |
293 | 293 |
294 // Utility class to delete a file when it goes out of scope. | 294 // Utility class to delete a file when it goes out of scope. |
295 class ScopedPathUnlinker { | 295 class ScopedPathUnlinker { |
296 public: | 296 public: |
297 explicit ScopedPathUnlinker(const std::string& path) : path_(path) {} | 297 explicit ScopedPathUnlinker(const std::string& path) |
| 298 : path_(path), |
| 299 should_remove_(true) {} |
298 ~ScopedPathUnlinker() { | 300 ~ScopedPathUnlinker() { |
299 if (unlink(path_.c_str()) < 0) { | 301 if (should_remove_ && unlink(path_.c_str()) < 0) { |
300 std::string err_message = strerror(errno); | 302 std::string err_message = strerror(errno); |
301 LOG(ERROR) << "Unable to unlink path " << path_ << ": " << err_message; | 303 LOG(ERROR) << "Unable to unlink path " << path_ << ": " << err_message; |
302 } | 304 } |
303 } | 305 } |
| 306 void set_should_remove(bool should_remove) { should_remove_ = should_remove; } |
| 307 |
304 private: | 308 private: |
305 const std::string path_; | 309 const std::string path_; |
| 310 bool should_remove_; |
306 DISALLOW_COPY_AND_ASSIGN(ScopedPathUnlinker); | 311 DISALLOW_COPY_AND_ASSIGN(ScopedPathUnlinker); |
307 }; | 312 }; |
308 | 313 |
309 // Utility class to delete an empty directory when it goes out of scope. | 314 // Utility class to delete an empty directory when it goes out of scope. |
310 class ScopedDirRemover { | 315 class ScopedDirRemover { |
311 public: | 316 public: |
312 explicit ScopedDirRemover(const std::string& path) | 317 explicit ScopedDirRemover(const std::string& path) |
313 : path_(path), | 318 : path_(path), |
314 should_remove_(true) {} | 319 should_remove_(true) {} |
315 ~ScopedDirRemover() { | 320 ~ScopedDirRemover() { |
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415 if (_error) { \ | 420 if (_error) { \ |
416 errno = _error; \ | 421 errno = _error; \ |
417 LOG(ERROR) << #_x " failed: " << _error; \ | 422 LOG(ERROR) << #_x " failed: " << _error; \ |
418 return false; \ | 423 return false; \ |
419 } \ | 424 } \ |
420 } while (0) | 425 } while (0) |
421 | 426 |
422 | 427 |
423 | 428 |
424 #endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_UTILS_H__ | 429 #endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_UTILS_H__ |
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