| 21 | # http://www.uruk.org/orig-grub/PC_partitioning.txt |
| 22 | |
| 23 | class QlDisk(QlFsMappedObject): |
| 24 | |
| 25 | # 512 bytes/sector |
| 26 | # 63 sectors/track |
| 27 | # 255 heads (tracks/cylinder) |
| 28 | # 1024 cylinders |
| 29 | |
| 30 | def __init__(self, host_path: AnyStr, drive_path, n_cylinders: int = 1, n_heads: int = 1, sector_size: int = 512): |
| 31 | self._drive_path = drive_path |
| 32 | self._fp = open(host_path, "rb+") |
| 33 | self._n_heads = n_heads |
| 34 | self._n_cylinders = n_cylinders |
| 35 | self._sector_size = sector_size |
| 36 | self.lseek(0, 2) |
| 37 | self._filesize = self.tell() |
| 38 | self._n_sectors = (self._filesize - 1) // self.sector_size + 1 |
| 39 | |
| 40 | def __del__(self): |
| 41 | if not self.fp.closed: |
| 42 | self.fp.close() |
| 43 | |
| 44 | @property |
| 45 | def filesize(self): |
| 46 | return self._filesize |
| 47 | |
| 48 | @property |
| 49 | def n_heads(self): |
| 50 | return self._n_heads |
| 51 | |
| 52 | @property |
| 53 | def n_sectors(self): |
| 54 | return self._n_sectors |
| 55 | |
| 56 | @property |
| 57 | def n_cylinders(self): |
| 58 | return self._n_cylinders |
| 59 | |
| 60 | @property |
| 61 | def sector_size(self): |
| 62 | return self._sector_size |
| 63 | |
| 64 | @property |
| 65 | def fp(self): |
| 66 | return self._fp |
| 67 | |
| 68 | # Methods from FsMappedObject |
| 69 | def read(self, size: Optional[int]) -> bytes: |
| 70 | return self.fp.read(size) |
| 71 | |
| 72 | def write(self, buffer: ReadableBuffer) -> int: |
| 73 | return self.fp.write(buffer) |
| 74 | |
| 75 | def lseek(self, offset: int, origin: int) -> int: |
| 76 | return self.fp.seek(offset, origin) |
| 77 | |
| 78 | def tell(self) -> int: |
| 79 | return self.fp.tell() |
| 80 |
no outgoing calls
no test coverage detected