dev/storage/disk_image.cc

89         stream.open(file.c_str(), mode);
90         if (!stream.is_open())
98     stream.close();
105         if (!stream.is_open())
107         stream.seekg(0, ios::end);
108         disk_size = stream.tellg();
120     if (!stream.is_open())
123     stream.seekg(offset * SectorSize, ios::beg);
124     if (!stream.good())
127     streampos pos = stream.tellg();
128     stream.read((char *)data, SectorSize);
133     return stream.tellg() - pos;
145     if (!stream.is_open())
148     stream.seekp(offset * SectorSize, ios::beg);
149     if (!stream.good())
155     streampos pos = stream.tellp();
156     stream.write((const char *)data, SectorSize);
157     return stream.tellp() - pos;
222 SafeRead(ifstream &stream, void *data, int count)
224     stream.read((char *)data, count);
225     if (!stream.is_open())
228     if (stream.eof())
231     if (stream.bad() || stream.fail())
237 SafeRead(ifstream &stream, T &data)
239     SafeRead(stream, &data, sizeof(data));
244 SafeReadSwap(ifstream &stream, T &data)
246     SafeRead(stream, &data, sizeof(data));
253     ifstream stream(file.c_str());
254     if (!stream.is_open())
257     if (stream.fail() || stream.bad())
261     SafeRead(stream, magic);
267     SafeReadSwap(stream, major);
268     SafeReadSwap(stream, minor);
275     SafeReadSwap(stream, sector_count);
281         SafeReadSwap(stream, offset);
284         SafeRead(stream, sector, sizeof(Sector));
290     stream.close();
305 SafeWrite(ofstream &stream, const void *data, int count)
307     stream.write((const char *)data, count);
308     if (!stream.is_open())
311     if (stream.eof())
314     if (stream.bad() || stream.fail())
320 SafeWrite(ofstream &stream, const T &data)
322     SafeWrite(stream, &data, sizeof(data));
327 SafeWriteSwap(ofstream &stream, const T &data)
330     SafeWrite(stream, &swappeddata, sizeof(data));
348     ofstream stream(file.c_str());
349     if (!stream.is_open() || stream.fail() || stream.bad())
354     SafeWrite(stream, magic);
356     SafeWriteSwap(stream, (uint32_t)VersionMajor);
357     SafeWriteSwap(stream, (uint32_t)VersionMinor);
358     SafeWriteSwap(stream, (uint64_t)table->size());
368         SafeWriteSwap(stream, (uint64_t)(*iter).first);
369         SafeWrite(stream, (*iter).second->data, sizeof(Sector));
373     stream.close();