def _remove_handle(self, path):
_hash_path = hash_path(path)
handle = self.store.remove(_hash_path)
if handle is not None:
parent, name = os.path.split(path)
if handle[3] == 1:
self.store.remove('l_' + _hash_path)
parent_hash = hash_path(parent)
parent_l = self.store.get("l_" + parent_hash)
if name in parent_l:
parent_l.remove(name)
self.store.put("l_" + parent_hash, parent_l)
return handle
def _rename_handle(self, old, new):
parent, name = _split_path(new)
self._remove_handle(new)
parent, old_name = os.path.split(old)
parent_hash = hash_path(parent)
parent_l = self.store.get("l_" + parent_hash)
parent_l.remove(old_name)
parent_l.append(name)
self.store.put("l_" + parent_hash, parent_l)
handle = self._remove_handle(old)
handle = self._copy_handle(handle, key=hash_path(new), name=name)
self.store.put(handle[0], handle)
def __init__(self, root, mount_point):
self.root = root
self.mount_point = mount_point
db_path = self.root + '/.store.db'
st_dict = self._get_st_dict(os.lstat(self.root))
self.gid = st_dict['st_gid']
self.uid = st_dict['st_uid']
stv = self._get_st_dict(os.lstat(self.root))
self.store = HandleStore(db_path, stv)
handle = self._get_handle_path('/')
if handle is None:
handle = (hash_path('/'), '/', None, 1, stv, None)
self.store.put(hash_path('/'), handle)
def _create_handle(self, path, is_dir, dir_stv=None, link_path=None):
dir_flag = 0
if is_dir:
dir_flag = 1
parent, name = _split_path(path)
handle = (hash_path(path), name, parent, dir_flag, dir_stv, link_path)
self.store.put(handle[0], handle)
if is_dir:
self.store.put("l_" + handle[0], [])
parent_dir_key = "l_" + hash_path("/" + handle[2])
_dir = self.store.get(parent_dir_key)
_dir.append(handle[1])
self.store.put(parent_dir_key, _dir)
return handle
def symlink(self, name, target):
handle = self._get_handle_path(name)
if handle is not None:
raise FuseOSError(errno.ENOANO)
path = os.path.abspath(os.path.join(self.mount_point, "." + os.path.split(name)[0], target))
if path.startswith(self.mount_point):
fuse_path = path[len(self.mount_point):]
res = os.symlink(hash_path(fuse_path), self._full_path(name))
else:
res = os.symlink(path, self._full_path(name))
self._create_handle(name, False, link_path=target)
return res
def _list_dir(self, path):
return self.store.get("l_" + hash_path(path))
def _get_handle_path(self, path):
return self._get_handle_hash(hash_path(path))
def _full_path(self, partial):
path = self._get_full_path_hash(hash_path(partial))
return path