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from abstract import AbstractPartition
import os.path
from bootstrapvz.common.tools import log_check_call
class Mount(object):
"""Represents a mount into the partition
"""
def __init__(self, source, destination, opts):
"""
:param str,AbstractPartition source: The path from where we mount or a partition
:param str destination: The path of the mountpoint
:param list opts: List of options to pass to the mount command
"""
self.source = source
self.destination = destination
self.opts = opts
def mount(self, prefix):
"""Performs the mount operation or forwards it to another partition
:param str prefix: Path prefix of the mountpoint
"""
mount_dir = os.path.join(prefix, self.destination)
# If the source is another partition, we tell that partition to mount itself
if isinstance(self.source, AbstractPartition):
self.source.mount(destination=mount_dir)
else:
log_check_call(['mount'] + self.opts + [self.source, mount_dir])
self.mount_dir = mount_dir
def unmount(self):
"""Performs the unmount operation or asks the partition to unmount itself
"""
# If its a partition, it can unmount itself
if isinstance(self.source, AbstractPartition):
self.source.unmount()
else:
log_check_call(['umount', self.mount_dir])
del self.mount_dir
def __getstate__(self):
state = self.__dict__.copy()
state['__class__'] = self.__module__ + '.' + self.__class__.__name__
return state
def __setstate__(self, state):
for key in state:
self.__dict__[key] = state[key]
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