115 lines
4.1 KiB
Python
115 lines
4.1 KiB
Python
import os
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import subprocess
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##
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import psutil
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##
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import aif.disk.block as block
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import aif.disk.luks as luks
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import aif.disk.lvm as lvm
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import aif.disk.mdadm as mdadm
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import aif.utils
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from . import _common
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_BlockDev = _common.BlockDev
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FS_FSTYPES = aif.utils.kernelFilesystems()
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class FS(object):
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def __init__(self, fs_xml, sourceobj):
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# http://storaged.org/doc/udisks2-api/latest/gdbus-org.freedesktop.UDisks2.Filesystem.html#gdbus-interface-org-freedesktop-UDisks2-Filesystem.top_of_page
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# http://storaged.org/doc/udisks2-api/latest/ ?
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self.xml = fs_xml
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self.id = self.xml.attrib['id']
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if not isinstance(sourceobj, (block.Disk,
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block.Partition,
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luks.LUKS,
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lvm.LV,
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mdadm.Array)):
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raise ValueError(('sourceobj must be of type '
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'aif.disk.block.Partition, '
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'aif.disk.luks.LUKS, '
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'aif.disk.lvm.LV, or'
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'aif.disk.mdadm.Array'))
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self.source = sourceobj
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self.devpath = sourceobj.devpath
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self.formatted = False
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self.fstype = self.xml.attrib.get('type')
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if self.fstype not in FS_FSTYPES:
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raise ValueError('{0} is not a supported filesystem type on this system'.format(self.fstype))
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def format(self):
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if self.formatted:
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return ()
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# This is a safeguard. We do *not* want to high-format a disk that is mounted.
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aif.utils.checkMounted(self.devpath)
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# TODO: Can I format with DBus/gobject-introspection? I feel like I *should* be able to, but BlockDev's fs
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# plugin is *way* too limited in terms of filesystems and UDisks doesn't let you format that high-level.
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# TODO! Logging
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cmd = ['mkfs',
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'-t', self.fstype]
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for o in self.xml.findall('opt'):
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cmd.append(o.attrib['name'])
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if o.text:
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cmd.append(o.text)
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cmd.append(self.devpath)
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subprocess.run(cmd)
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self.formatted = True
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return()
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class Mount(object):
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# http://storaged.org/doc/udisks2-api/latest/gdbus-org.freedesktop.UDisks2.Filesystem.html#gdbus-method-org-freedesktop-UDisks2-Filesystem.Mount
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def __init__(self, mount_xml, fsobj):
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self.xml = mount_xml
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if not isinstance(fsobj, FS):
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raise ValueError('partobj must be of type aif.disk.filesystem.FS')
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_common.addBDPlugin('fs') # We *could* use the UDisks dbus to mount too, but best to stay within libblockdev.
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self.id = self.xml.attrib['id']
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self.fs = fsobj
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self.source = self.fs.devpath
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self.target = os.path.realpath(self.xml.attrib['target'])
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self.opts = {}
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for o in self.xml.findall('opt'):
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self.opts[o.attrib['name']] = o.text
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self.mounted = False
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def _parseOpts(self):
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opts = []
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for k, v in self.opts.items():
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if v and v is not True: # Python's boolean determination is weird sometimes.
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opts.append('{0}={1}'.format(k, v))
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else:
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opts.append(k)
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return(opts)
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def mount(self):
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if self.mounted:
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return()
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os.makedirs(self.target, exist_ok = True)
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opts = self._parseOpts()
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_BlockDev.fs.mount(self.source,
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self.target,
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self.fs.fstype,
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(','.join(opts) if opts else None))
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self.mounted = True
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return()
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def unmount(self, lazy = False, force = False):
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self.updateMount()
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if not self.mounted and not force:
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return()
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_BlockDev.fs.unmount(self.target,
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lazy,
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force)
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self.mounted = False
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return()
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def updateMount(self):
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if self.source in [p.device for p in psutil.disk_partitions(all = True)]:
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self.mounted = True
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else:
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self.mounted = False
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return()
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