mirror of
https://github.com/BigfootACA/arch-image-builder.git
synced 2024-11-11 10:37:52 +08:00
141 lines
3.8 KiB
Python
141 lines
3.8 KiB
Python
from math import ceil
|
|
from io import RawIOBase
|
|
from logging import getLogger
|
|
from builder.lib.utils import size_to_bytes
|
|
from builder.lib.serializable import SerializableDict
|
|
from builder.lib.area import Area
|
|
from builder.disk.layout.dio import DiskIO
|
|
from builder.disk.layout.area import DiskArea
|
|
from builder.disk.layout.part import DiskPart
|
|
log = getLogger(__name__)
|
|
|
|
|
|
class DiskLayout(DiskIO, DiskArea, SerializableDict):
|
|
partitions: list[DiskPart]
|
|
loaded: bool
|
|
|
|
@property
|
|
def id(self) -> str: pass
|
|
|
|
@id.setter
|
|
def id(self, val: str): pass
|
|
|
|
def create(self): pass
|
|
|
|
def reload(self): pass
|
|
|
|
def unload(self): pass
|
|
|
|
def save(self): pass
|
|
|
|
def set_from(self, config: dict): pass
|
|
|
|
def size_to_bytes(self, value: str | int, alt_units: dict = None) -> int:
|
|
units = {
|
|
"s": self.sector,
|
|
"sector": self.sector,
|
|
"sectors": self.sector
|
|
}
|
|
if alt_units:
|
|
units.update(alt_units)
|
|
return size_to_bytes(value, units)
|
|
|
|
def size_to_sectors(self, value: str | int, alt_units: dict = None) -> int:
|
|
ret = self.size_to_bytes(value, alt_units)
|
|
return ceil(ret / self.sector)
|
|
|
|
def _parse_area(self, config: dict) -> Area:
|
|
start, end, size = -1, -1, -1
|
|
if "start" in config: start = self.size_to_sectors(config["start"])
|
|
if "offset" in config: start = self.size_to_sectors(config["offset"])
|
|
if "end" in config: end = self.size_to_sectors(config["end"])
|
|
if "size" in config: size = self.size_to_sectors(config["size"])
|
|
if "length" in config: size = self.size_to_sectors(config["length"])
|
|
if "start_lba" in config: start = config["start_lba"]
|
|
if "offset_lba" in config: start = config["offset_lba"]
|
|
if "end_lba" in config: end = config["end_lba"]
|
|
if "size_lba" in config: size = config["size_lba"]
|
|
if "length_lba" in config: size = config["length_lba"]
|
|
return Area(start, end, size)
|
|
|
|
def parse_area(self, config: dict) -> Area:
|
|
area = self._parse_area(config)
|
|
area.fixup()
|
|
return area
|
|
|
|
def parse_free_area(self, config: dict) -> Area:
|
|
return self.find_free_area(area=self._parse_area(config))
|
|
|
|
def resort_partitions(self):
|
|
self.partitions.sort(key=lambda p: p.start_lba)
|
|
idx = 0
|
|
for part in self.partitions:
|
|
part.idx = idx
|
|
idx += 1
|
|
|
|
def add_partition_from(self, config: dict) -> DiskPart:
|
|
area = self.parse_free_area(config)
|
|
if area is None: raise ValueError("no free area found")
|
|
ptype = config["ptype"] if "ptype" in config else "linux"
|
|
return self.add_partition(ptype, area=area)
|
|
|
|
def del_partition(self, part: DiskPart):
|
|
if part not in self.partitions:
|
|
if part.layout == self:
|
|
raise ValueError("removed partition")
|
|
raise KeyError("partition not found")
|
|
self.partitions.remove(part)
|
|
|
|
def add_partition(
|
|
self,
|
|
ptype: str = None,
|
|
start: int = -1,
|
|
end: int = -1,
|
|
size: int = -1,
|
|
area: Area = None,
|
|
) -> DiskPart: pass
|
|
|
|
def __init__(
|
|
self,
|
|
fp: RawIOBase = None,
|
|
path: str = None,
|
|
sector: int = 512
|
|
):
|
|
DiskIO.__init__(self)
|
|
self.partitions = []
|
|
self.loaded = False
|
|
self._sector = sector
|
|
if sector < self._min_sector:
|
|
raise ValueError("bad sector size")
|
|
if fp: self._fp = fp
|
|
elif path:
|
|
self._fp = open(path, "wb+")
|
|
self._opened = True
|
|
else: raise ValueError("no I/O interface")
|
|
|
|
def __del__(self):
|
|
if self._opened: self._fp.close()
|
|
|
|
def __len__(self) -> int:
|
|
return len(self.partitions)
|
|
|
|
def __setitem__(self, key: int, value: DiskPart):
|
|
self.resort_partitions()
|
|
self.partitions[key] = value
|
|
|
|
def __getitem__(self, key: int) -> DiskPart:
|
|
self.resort_partitions()
|
|
return self.partitions[key]
|
|
|
|
def __delitem__(self, key: int):
|
|
self.resort_partitions()
|
|
self.del_partition(self.partitions[key])
|
|
self.resort_partitions()
|
|
|
|
def __iadd__(self, value: DiskPart) -> DiskPart:
|
|
self.resort_partitions()
|
|
value.idx = len(self.partitions)
|
|
self.partitions += value
|
|
self.resort_partitions()
|
|
return value
|