def from_cffi(cls, struct) -> FuseDirent:
return cls(
ino=struct.ino,
off=struct.off,
type=DT(struct.type),
# the name is padded with null bytes to make the dirent aligned,
# so we have to use strlen to find the end
name=ffi.string(struct.name, struct.namelen).decode(),
)
def from_bytes(cls: t.Type[T], data: bytes) -> t.Tuple[T, int]:
struct = ffi.cast('struct inotify_event*', ffi.from_buffer(data))
value = cls(
wd=WatchDescriptor(struct.wd),
mask=IN(struct.mask),
cookie=struct.cookie,
name=ffi.string(struct.name, struct.len).decode() if struct.len else None,
)
size = ffi.sizeof("struct inotify_event") + struct.len
return value, size
def from_bytes(cls: t.Type[T], data: bytes) -> T:
entries = []
while len(data) > 0:
record = ffi.cast('struct linux_dirent64*', ffi.from_buffer(data))
name_len = record.d_reclen - _d_name_offset
# the name is padded with null bytes to make the dirent aligned,
# so we have to use strlen to find the end
name = ffi.string(record.d_name, name_len).decode()
entries.append(Dirent(inode=record.d_ino, offset=record.d_off, type=DT(record.d_type), name=name))
data = data[record.d_reclen:]
return cls(entries)
def from_bytes(cls: t.Type[T], data: bytes) -> T:
entries = []
while len(data) > 0:
# We do the work of from_bytes in this class instead of in Dirent because we need the
# raw length field from the struct; merely doing len(name) will exclude padding.
record = ffi.cast('struct linux_dirent64*', ffi.from_buffer(data))
name_len = record.d_reclen - _d_name_offset
# the name is padded with null bytes to make the dirent aligned,
# so we have to use strlen to find the end
name = ffi.string(record.d_name, name_len).decode()
entries.append(Dirent(inode=record.d_ino, offset=record.d_off, type=DT(record.d_type), name=name))
data = data[record.d_reclen:]
return cls(entries)