OLD | NEW |
1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #include "net/disk_cache/simple/simple_version_upgrade.h" | 5 #include "net/disk_cache/simple/simple_version_upgrade.h" |
6 | 6 |
7 #include <cstring> | 7 #include <cstring> |
8 | 8 |
9 #include "base/files/file.h" | 9 #include "base/files/file.h" |
10 #include "base/files/file_path.h" | 10 #include "base/files/file_path.h" |
11 #include "base/files/file_util.h" | 11 #include "base/files/file_util.h" |
12 #include "base/files/memory_mapped_file.h" | 12 #include "base/files/memory_mapped_file.h" |
13 #include "base/logging.h" | 13 #include "base/logging.h" |
14 #include "base/pickle.h" | 14 #include "base/pickle.h" |
15 #include "net/disk_cache/simple/simple_backend_version.h" | 15 #include "net/disk_cache/simple/simple_backend_version.h" |
16 #include "net/disk_cache/simple/simple_entry_format_history.h" | 16 #include "net/disk_cache/simple/simple_entry_format_history.h" |
17 #include "third_party/zlib/zlib.h" | 17 #include "third_party/zlib/zlib.h" |
18 | 18 |
19 namespace { | 19 namespace { |
20 | 20 |
21 // It is not possible to upgrade cache structures on disk that are of version | 21 // It is not possible to upgrade cache structures on disk that are of version |
22 // below this, the entire cache should be dropped for them. | 22 // below this, the entire cache should be dropped for them. |
23 const uint32 kMinVersionAbleToUpgrade = 5; | 23 const uint32_t kMinVersionAbleToUpgrade = 5; |
24 | 24 |
25 const char kFakeIndexFileName[] = "index"; | 25 const char kFakeIndexFileName[] = "index"; |
26 const char kIndexFileName[] = "the-real-index"; | 26 const char kIndexFileName[] = "the-real-index"; |
27 | 27 |
28 void LogMessageFailedUpgradeFromVersion(int version) { | 28 void LogMessageFailedUpgradeFromVersion(int version) { |
29 LOG(ERROR) << "Failed to upgrade Simple Cache from version: " << version; | 29 LOG(ERROR) << "Failed to upgrade Simple Cache from version: " << version; |
30 } | 30 } |
31 | 31 |
32 bool WriteFakeIndexFile(const base::FilePath& file_name) { | 32 bool WriteFakeIndexFile(const base::FilePath& file_name) { |
33 base::File file(file_name, base::File::FLAG_CREATE | base::File::FLAG_WRITE); | 33 base::File file(file_name, base::File::FLAG_CREATE | base::File::FLAG_WRITE); |
(...skipping 114 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
148 reinterpret_cast<char*>(&file_header), | 148 reinterpret_cast<char*>(&file_header), |
149 sizeof(file_header)); | 149 sizeof(file_header)); |
150 if (bytes_read != sizeof(file_header) || | 150 if (bytes_read != sizeof(file_header) || |
151 file_header.initial_magic_number != | 151 file_header.initial_magic_number != |
152 disk_cache::simplecache_v5::kSimpleInitialMagicNumber) { | 152 disk_cache::simplecache_v5::kSimpleInitialMagicNumber) { |
153 LOG(ERROR) << "File structure does not match the disk cache backend."; | 153 LOG(ERROR) << "File structure does not match the disk cache backend."; |
154 return false; | 154 return false; |
155 } | 155 } |
156 fake_index_file.Close(); | 156 fake_index_file.Close(); |
157 | 157 |
158 uint32 version_from = file_header.version; | 158 uint32_t version_from = file_header.version; |
159 if (version_from < kMinVersionAbleToUpgrade || | 159 if (version_from < kMinVersionAbleToUpgrade || |
160 version_from > kSimpleVersion) { | 160 version_from > kSimpleVersion) { |
161 LOG(ERROR) << "Inconsistent cache version."; | 161 LOG(ERROR) << "Inconsistent cache version."; |
162 return false; | 162 return false; |
163 } | 163 } |
164 bool upgrade_needed = (version_from != kSimpleVersion); | 164 bool upgrade_needed = (version_from != kSimpleVersion); |
165 if (version_from == kMinVersionAbleToUpgrade) { | 165 if (version_from == kMinVersionAbleToUpgrade) { |
166 // Upgrade only the index for V4 -> V5 move. | 166 // Upgrade only the index for V4 -> V5 move. |
167 if (!UpgradeIndexV5V6(path)) { | 167 if (!UpgradeIndexV5V6(path)) { |
168 LogMessageFailedUpgradeFromVersion(file_header.version); | 168 LogMessageFailedUpgradeFromVersion(file_header.version); |
(...skipping 21 matching lines...) Expand all Loading... |
190 } | 190 } |
191 } | 191 } |
192 // Verify during the test stage that the upgraders are implemented for all | 192 // Verify during the test stage that the upgraders are implemented for all |
193 // versions. The release build would cause backend initialization failure | 193 // versions. The release build would cause backend initialization failure |
194 // which would then later lead to removing all files known to the backend. | 194 // which would then later lead to removing all files known to the backend. |
195 DCHECK_EQ(kSimpleVersion, version_from); | 195 DCHECK_EQ(kSimpleVersion, version_from); |
196 return false; | 196 return false; |
197 } | 197 } |
198 | 198 |
199 } // namespace disk_cache | 199 } // namespace disk_cache |
OLD | NEW |