def rootpath(self, truepath, binds=True):
truepath = PATHPARTS.path_2_tuple(truepath)
if binds:
entries = self._entries_by_root
else:
entries = self._entries_by_root_nobinds
for x in range(len(truepath), 1, -1):
parts = truepath[:x]
if parts in entries:
return PATHPARTS.path_2_string(parts)
return PATHPARTS.path_2_string(truepath[:1])
def is_sysmount(self, truepath):
truepath = self.truepath(truepath)
return len(self._types_by_root.get(PATHPARTS.path_2_tuple(truepath), set()).intersection([
'sysfs',
'proc',
'devtmpfs',
'devpts',
'fusectl',
'debugfs',
'securityfs',
'tmpfs',
'binfmt_misc'
])) != 0
def truepath(self, path):
try:
path = PATH.realpath(path)
parts = PATHPARTS.path_2_tuple(path)
for x in range(len(parts), 0, -1):
part = parts[:x]
if part in self._binds:
parts = self._binds[part] + parts[x:]
path = PATHPARTS.path_2_string(parts)
return path
return path
except OSError, ex:
return None
def resolve_bind(root, depth=255):
if depth == 0:
return None
parts = ()
for node in root:
parts = parts + (node,)
for entry in self._entries_by_root.get(parts, []):
if (entry.type == 'none') and ('bind' in entry.opts):
input = parts
parts = resolve_bind(PATHPARTS.path_2_tuple(entry.fsname), depth - 1)
if parts == None:
return None
else:
break
return parts
def __init__(self, filenames=['/etc/mtab', '/proc/mounts']):
super(MountEntries, self).__init__()
self._entries_by_fn = {} #
self._entries_by_root = {}
self._entries_by_root_nobinds = {}
self._types_by_root = {}
self._binds = {}
for filename in filenames:
try:
self._entries_by_fn[filename] = list(enum_mntent(filename))
except IOError:
continue
except OSError:
continue
for entry in self._entries_by_fn[filename]:
root = PATHPARTS.path_2_tuple(entry.dir)
self._entries_by_root.setdefault(root, []).append(entry)
if (entry.type != 'none') or ('bind' not in entry.opts):
self._entries_by_root_nobinds.setdefault(root, []).append(entry)
self._types_by_root.setdefault(root, set()).add(entry.type)
def resolve_bind(root, depth=255):
if depth == 0:
return None
parts = ()
for node in root:
parts = parts + (node,)
for entry in self._entries_by_root.get(parts, []):
if (entry.type == 'none') and ('bind' in entry.opts):
input = parts
parts = resolve_bind(PATHPARTS.path_2_tuple(entry.fsname), depth - 1)
if parts == None:
return None
else:
break
return parts
for root in self._entries_by_root.keys():
source = resolve_bind(root)
if (source != None) and (source != root):
self._binds[root] = source
def is_bindmount(self, truepath):
''' Returns true if this is a bind mount'''
return PATHPARTS.path_2_tuple(truepath) in self._binds
def is_mount(self, truepath):
''' Returns true for any kind of mount, even bind mounts '''
return PATHPARTS.path_2_tuple(truepath) in self._entries_by_root
