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comparison: toolkit/crashreporter/google-breakpad/src/common/linux/file_id.h
toolkit/crashreporter/google-breakpad/src/common/linux/file_id.h
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| 1 // Copyright (c) 2006, Google Inc. | |
| 2 // All rights reserved. | |
| 3 // | |
| 4 // Redistribution and use in source and binary forms, with or without | |
| 5 // modification, are permitted provided that the following conditions are | |
| 6 // met: | |
| 7 // | |
| 8 // * Redistributions of source code must retain the above copyright | |
| 9 // notice, this list of conditions and the following disclaimer. | |
| 10 // * Redistributions in binary form must reproduce the above | |
| 11 // copyright notice, this list of conditions and the following disclaimer | |
| 12 // in the documentation and/or other materials provided with the | |
| 13 // distribution. | |
| 14 // * Neither the name of Google Inc. nor the names of its | |
| 15 // contributors may be used to endorse or promote products derived from | |
| 16 // this software without specific prior written permission. | |
| 17 // | |
| 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 // | |
| 30 // file_id.h: Return a unique identifier for a file | |
| 31 // | |
| 32 | |
| 33 #ifndef COMMON_LINUX_FILE_ID_H__ | |
| 34 #define COMMON_LINUX_FILE_ID_H__ | |
| 35 | |
| 36 #include <limits.h> | |
| 37 | |
| 38 #include "common/linux/guid_creator.h" | |
| 39 | |
| 40 namespace google_breakpad { | |
| 41 | |
| 42 static const size_t kMDGUIDSize = sizeof(MDGUID); | |
| 43 | |
| 44 class FileID { | |
| 45 public: | |
| 46 explicit FileID(const char* path); | |
| 47 ~FileID() {} | |
| 48 | |
| 49 // Load the identifier for the elf file path specified in the constructor into | |
| 50 // |identifier|. Return false if the identifier could not be created for the | |
| 51 // file. | |
| 52 // The current implementation will look for a .note.gnu.build-id | |
| 53 // section and use that as the file id, otherwise it falls back to | |
| 54 // XORing the first 4096 bytes of the .text section to generate an identifier. | |
| 55 bool ElfFileIdentifier(uint8_t identifier[kMDGUIDSize]); | |
| 56 | |
| 57 // Load the identifier for the elf file mapped into memory at |base| into | |
| 58 // |identifier|. Return false if the identifier could not be created for the | |
| 59 // file. | |
| 60 static bool ElfFileIdentifierFromMappedFile(const void* base, | |
| 61 uint8_t identifier[kMDGUIDSize]); | |
| 62 | |
| 63 // Convert the |identifier| data to a NULL terminated string. The string will | |
| 64 // be formatted as a UUID (e.g., 22F065BB-FC9C-49F7-80FE-26A7CEBD7BCE). | |
| 65 // The |buffer| should be at least 37 bytes long to receive all of the data | |
| 66 // and termination. Shorter buffers will contain truncated data. | |
| 67 static void ConvertIdentifierToString(const uint8_t identifier[kMDGUIDSize], | |
| 68 char* buffer, int buffer_length); | |
| 69 | |
| 70 private: | |
| 71 // Storage for the path specified | |
| 72 char path_[PATH_MAX]; | |
| 73 }; | |
| 74 | |
| 75 } // namespace google_breakpad | |
| 76 | |
| 77 #endif // COMMON_LINUX_FILE_ID_H__ |
