organizing examples and package files

1 files changed, 0 insertions, 692 deletions

diff --git a/fuse.py b/fuse.py
deleted file mode 100644
index e4e4c0e..0000000
--- a/fuse.py
+++ /dev/null
@@ -1,692 +0,0 @@
-# Copyright (c) 2008 Giorgos Verigakis <verigak@gmail.com>
-#
-# Permission to use, copy, modify, and distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-from __future__ import division
-
-from ctypes import *
-from ctypes.util import find_library
-from errno import *
-from functools import partial
-from os import strerror
-from platform import machine, system
-from signal import signal, SIGINT, SIG_DFL
-from stat import S_IFDIR
-from traceback import print_exc
-
-
-__version__ = '1.1'
-
-_system = system()
-_machine = machine()
-
-if _system == 'Darwin':
-    _libfuse_path = find_library('fuse4x') or find_library('osxfuse') or \
-                    find_library('fuse')
-else:
-    _libfuse_path = find_library('fuse')
-if not _libfuse_path:
-    raise EnvironmentError('Unable to find libfuse')
-
-if _system == 'Darwin':
-    _libiconv = CDLL(find_library('iconv'), RTLD_GLOBAL) # libfuse dependency
-_libfuse = CDLL(_libfuse_path)
-
-if _system == 'Darwin' and hasattr(_libfuse, 'macfuse_version'):
-    _system = 'Darwin-MacFuse'
-
-
-class c_timespec(Structure):
-    _fields_ = [('tv_sec', c_long), ('tv_nsec', c_long)]
-
-class c_utimbuf(Structure):
-    _fields_ = [('actime', c_timespec), ('modtime', c_timespec)]
-
-class c_stat(Structure):
-    pass    # Platform dependent
-
-
-if _system in ('Darwin', 'Darwin-MacFuse', 'FreeBSD'):
-    ENOTSUP = 45
-    c_dev_t = c_int32
-    c_fsblkcnt_t = c_ulong
-    c_fsfilcnt_t = c_ulong
-    c_gid_t = c_uint32
-    c_mode_t = c_uint16
-    c_off_t = c_int64
-    c_pid_t = c_int32
-    c_uid_t = c_uint32
-    setxattr_t = CFUNCTYPE(c_int, c_char_p, c_char_p, POINTER(c_byte),
-        c_size_t, c_int, c_uint32)
-    getxattr_t = CFUNCTYPE(c_int, c_char_p, c_char_p, POINTER(c_byte),
-        c_size_t, c_uint32)
-    if _system == 'Darwin':
-        c_stat._fields_ = [
-            ('st_dev', c_dev_t),
-            ('st_mode', c_mode_t),
-            ('st_nlink', c_uint16),
-            ('st_ino', c_uint64),
-            ('st_uid', c_uid_t),
-            ('st_gid', c_gid_t),
-            ('st_rdev', c_dev_t),
-            ('st_atimespec', c_timespec),
-            ('st_mtimespec', c_timespec),
-            ('st_ctimespec', c_timespec),
-            ('st_birthtimespec', c_timespec),
-            ('st_size', c_off_t),
-            ('st_blocks', c_int64),
-            ('st_blksize', c_int32),
-            ('st_flags', c_int32),
-            ('st_gen', c_int32),
-            ('st_lspare', c_int32),
-            ('st_qspare', c_int64)]
-    else:
-        c_stat._fields_ = [
-            ('st_dev', c_dev_t),
-            ('st_ino', c_uint32),
-            ('st_mode', c_mode_t),
-            ('st_nlink', c_uint16),
-            ('st_uid', c_uid_t),
-            ('st_gid', c_gid_t),
-            ('st_rdev', c_dev_t),
-            ('st_atimespec', c_timespec),
-            ('st_mtimespec', c_timespec),
-            ('st_ctimespec', c_timespec),
-            ('st_size', c_off_t),
-            ('st_blocks', c_int64),
-            ('st_blksize', c_int32)]
-elif _system == 'Linux':
-    ENOTSUP = 95
-    c_dev_t = c_ulonglong
-    c_fsblkcnt_t = c_ulonglong
-    c_fsfilcnt_t = c_ulonglong
-    c_gid_t = c_uint
-    c_mode_t = c_uint
-    c_off_t = c_longlong
-    c_pid_t = c_int
-    c_uid_t = c_uint
-    setxattr_t = CFUNCTYPE(c_int, c_char_p, c_char_p, POINTER(c_byte), c_size_t, c_int)
-    getxattr_t = CFUNCTYPE(c_int, c_char_p, c_char_p, POINTER(c_byte), c_size_t)
-    
-    if _machine == 'x86_64':
-        c_stat._fields_ = [
-            ('st_dev', c_dev_t),
-            ('st_ino', c_ulong),
-            ('st_nlink', c_ulong),
-            ('st_mode', c_mode_t),
-            ('st_uid', c_uid_t),
-            ('st_gid', c_gid_t),
-            ('__pad0', c_int),
-            ('st_rdev', c_dev_t),
-            ('st_size', c_off_t),
-            ('st_blksize', c_long),
-            ('st_blocks', c_long),
-            ('st_atimespec', c_timespec),
-            ('st_mtimespec', c_timespec),
-            ('st_ctimespec', c_timespec)]
-    elif _machine == 'ppc':
-        c_stat._fields_ = [
-            ('st_dev', c_dev_t),
-            ('st_ino', c_ulonglong),
-            ('st_mode', c_mode_t),
-            ('st_nlink', c_uint),
-            ('st_uid', c_uid_t),
-            ('st_gid', c_gid_t),
-            ('st_rdev', c_dev_t),
-            ('__pad2', c_ushort),
-            ('st_size', c_off_t),
-            ('st_blksize', c_long),
-            ('st_blocks', c_longlong),
-            ('st_atimespec', c_timespec),
-            ('st_mtimespec', c_timespec),
-            ('st_ctimespec', c_timespec)]
-    else:
-        # i686, use as fallback for everything else
-        c_stat._fields_ = [
-            ('st_dev', c_dev_t),
-            ('__pad1', c_ushort),
-            ('__st_ino', c_ulong),
-            ('st_mode', c_mode_t),
-            ('st_nlink', c_uint),
-            ('st_uid', c_uid_t),
-            ('st_gid', c_gid_t),
-            ('st_rdev', c_dev_t),
-            ('__pad2', c_ushort),
-            ('st_size', c_off_t),
-            ('st_blksize', c_long),
-            ('st_blocks', c_longlong),
-            ('st_atimespec', c_timespec),
-            ('st_mtimespec', c_timespec),
-            ('st_ctimespec', c_timespec),
-            ('st_ino', c_ulonglong)]
-else:
-    raise NotImplementedError('%s is not supported.' % _system)
-
-
-class c_statvfs(Structure):
-    _fields_ = [
-        ('f_bsize', c_ulong),
-        ('f_frsize', c_ulong),
-        ('f_blocks', c_fsblkcnt_t),
-        ('f_bfree', c_fsblkcnt_t),
-        ('f_bavail', c_fsblkcnt_t),
-        ('f_files', c_fsfilcnt_t),
-        ('f_ffree', c_fsfilcnt_t),
-        ('f_favail', c_fsfilcnt_t)]
-
-if _system == 'FreeBSD':
-    c_fsblkcnt_t = c_uint64
-    c_fsfilcnt_t = c_uint64
-    setxattr_t = CFUNCTYPE(c_int, c_char_p, c_char_p, POINTER(c_byte), c_size_t, c_int)
-    getxattr_t = CFUNCTYPE(c_int, c_char_p, c_char_p, POINTER(c_byte), c_size_t)
-    class c_statvfs(Structure):
-        _fields_ = [
-            ('f_bavail', c_fsblkcnt_t),
-            ('f_bfree', c_fsblkcnt_t),
-            ('f_blocks', c_fsblkcnt_t),
-            ('f_favail', c_fsfilcnt_t),
-            ('f_ffree', c_fsfilcnt_t),
-            ('f_files', c_fsfilcnt_t),
-            ('f_bsize', c_ulong),
-            ('f_flag', c_ulong),
-            ('f_frsize', c_ulong)]
-
-class fuse_file_info(Structure):
-    _fields_ = [
-        ('flags', c_int),
-        ('fh_old', c_ulong),
-        ('writepage', c_int),
-        ('direct_io', c_uint, 1),
-        ('keep_cache', c_uint, 1),
-        ('flush', c_uint, 1),
-        ('padding', c_uint, 29),
-        ('fh', c_uint64),
-        ('lock_owner', c_uint64)]
-
-class fuse_context(Structure):
-    _fields_ = [
-        ('fuse', c_voidp),
-        ('uid', c_uid_t),
-        ('gid', c_gid_t),
-        ('pid', c_pid_t),
-        ('private_data', c_voidp)]
-
-_libfuse.fuse_get_context.restype = POINTER(fuse_context)
-
-class fuse_operations(Structure):
-    _fields_ = [
-        ('getattr', CFUNCTYPE(c_int, c_char_p, POINTER(c_stat))),
-        ('readlink', CFUNCTYPE(c_int, c_char_p, POINTER(c_byte), c_size_t)),
-        ('getdir', c_voidp),    # Deprecated, use readdir
-        ('mknod', CFUNCTYPE(c_int, c_char_p, c_mode_t, c_dev_t)),
-        ('mkdir', CFUNCTYPE(c_int, c_char_p, c_mode_t)),
-        ('unlink', CFUNCTYPE(c_int, c_char_p)),
-        ('rmdir', CFUNCTYPE(c_int, c_char_p)),
-        ('symlink', CFUNCTYPE(c_int, c_char_p, c_char_p)),
-        ('rename', CFUNCTYPE(c_int, c_char_p, c_char_p)),
-        ('link', CFUNCTYPE(c_int, c_char_p, c_char_p)),
-        ('chmod', CFUNCTYPE(c_int, c_char_p, c_mode_t)),
-        ('chown', CFUNCTYPE(c_int, c_char_p, c_uid_t, c_gid_t)),
-        ('truncate', CFUNCTYPE(c_int, c_char_p, c_off_t)),
-        ('utime', c_voidp),     # Deprecated, use utimens
-        ('open', CFUNCTYPE(c_int, c_char_p, POINTER(fuse_file_info))),
-        ('read', CFUNCTYPE(c_int, c_char_p, POINTER(c_byte), c_size_t, c_off_t,
-            POINTER(fuse_file_info))),
-        ('write', CFUNCTYPE(c_int, c_char_p, POINTER(c_byte), c_size_t, c_off_t,
-            POINTER(fuse_file_info))),
-        ('statfs', CFUNCTYPE(c_int, c_char_p, POINTER(c_statvfs))),
-        ('flush', CFUNCTYPE(c_int, c_char_p, POINTER(fuse_file_info))),
-        ('release', CFUNCTYPE(c_int, c_char_p, POINTER(fuse_file_info))),
-        ('fsync', CFUNCTYPE(c_int, c_char_p, c_int, POINTER(fuse_file_info))),
-        ('setxattr', setxattr_t),
-        ('getxattr', getxattr_t),
-        ('listxattr', CFUNCTYPE(c_int, c_char_p, POINTER(c_byte), c_size_t)),
-        ('removexattr', CFUNCTYPE(c_int, c_char_p, c_char_p)),
-        ('opendir', CFUNCTYPE(c_int, c_char_p, POINTER(fuse_file_info))),
-        ('readdir', CFUNCTYPE(c_int, c_char_p, c_voidp, CFUNCTYPE(c_int, c_voidp,
-            c_char_p, POINTER(c_stat), c_off_t), c_off_t, POINTER(fuse_file_info))),
-        ('releasedir', CFUNCTYPE(c_int, c_char_p, POINTER(fuse_file_info))),
-        ('fsyncdir', CFUNCTYPE(c_int, c_char_p, c_int, POINTER(fuse_file_info))),
-        ('init', CFUNCTYPE(c_voidp, c_voidp)),
-        ('destroy', CFUNCTYPE(c_voidp, c_voidp)),
-        ('access', CFUNCTYPE(c_int, c_char_p, c_int)),
-        ('create', CFUNCTYPE(c_int, c_char_p, c_mode_t, POINTER(fuse_file_info))),
-        ('ftruncate', CFUNCTYPE(c_int, c_char_p, c_off_t, POINTER(fuse_file_info))),
-        ('fgetattr', CFUNCTYPE(c_int, c_char_p, POINTER(c_stat),
-            POINTER(fuse_file_info))),
-        ('lock', CFUNCTYPE(c_int, c_char_p, POINTER(fuse_file_info), c_int, c_voidp)),
-        ('utimens', CFUNCTYPE(c_int, c_char_p, POINTER(c_utimbuf))),
-        ('bmap', CFUNCTYPE(c_int, c_char_p, c_size_t, POINTER(c_ulonglong)))]
-
-
-def time_of_timespec(ts):
-    return ts.tv_sec + ts.tv_nsec / 10 ** 9
-
-def set_st_attrs(st, attrs):
-    for key, val in attrs.items():
-        if key in ('st_atime', 'st_mtime', 'st_ctime'):
-            timespec = getattr(st, key + 'spec')
-            timespec.tv_sec = int(val)
-            timespec.tv_nsec = int((val - timespec.tv_sec) * 10 ** 9)
-        elif hasattr(st, key):
-            setattr(st, key, val)
-
-
-def fuse_get_context():
-    """Returns a (uid, gid, pid) tuple"""
-    ctxp = _libfuse.fuse_get_context()
-    ctx = ctxp.contents
-    return ctx.uid, ctx.gid, ctx.pid
-
-
-class FuseOSError(OSError):
-    def __init__(self, errno):
-        super(FuseOSError, self).__init__(errno, strerror(errno))
-
-
-class FUSE(object):
-    """This class is the lower level interface and should not be subclassed
-       under normal use. Its methods are called by fuse.
-       Assumes API version 2.6 or later."""
-    
-    def __init__(self, operations, mountpoint, raw_fi=False, **kwargs):
-        """Setting raw_fi to True will cause FUSE to pass the fuse_file_info
-           class as is to Operations, instead of just the fh field.
-           This gives you access to direct_io, keep_cache, etc."""
-        
-        self.operations = operations
-        self.raw_fi = raw_fi
-        args = ['fuse']
-        if kwargs.pop('foreground', False):
-            args.append('-f')
-        if kwargs.pop('debug', False):
-            args.append('-d')
-        if kwargs.pop('nothreads', False):
-            args.append('-s')
-        kwargs.setdefault('fsname', operations.__class__.__name__)
-        args.append('-o')
-        args.append(','.join(key if val == True else '%s=%s' % (key, val)
-            for key, val in kwargs.items()))
-        args.append(mountpoint)
-        argv = (c_char_p * len(args))(*args)
-        
-        fuse_ops = fuse_operations()
-        for name, prototype in fuse_operations._fields_:
-            if prototype != c_voidp and getattr(operations, name, None):
-                op = partial(self._wrapper_, getattr(self, name))
-                setattr(fuse_ops, name, prototype(op))
-        
-        old_handler = signal(SIGINT, SIG_DFL)
-        
-        err = _libfuse.fuse_main_real(len(args), argv, pointer(fuse_ops),
-                                      sizeof(fuse_ops), None)
-        
-        signal(SIGINT, old_handler)
-        
-        del self.operations     # Invoke the destructor
-        if err:
-            raise RuntimeError(err)
-    
-    def _wrapper_(self, func, *args, **kwargs):
-        """Decorator for the methods that follow"""
-        try:
-            return func(*args, **kwargs) or 0
-        except OSError, e:
-            return -(e.errno or EFAULT)
-        except:
-            print_exc()
-            return -EFAULT
-    
-    def getattr(self, path, buf):
-        return self.fgetattr(path, buf, None)
-    
-    def readlink(self, path, buf, bufsize):
-        ret = self.operations('readlink', path)
-        data = create_string_buffer(ret[:bufsize - 1])
-        memmove(buf, data, len(data))
-        return 0
-    
-    def mknod(self, path, mode, dev):
-        return self.operations('mknod', path, mode, dev)
-    
-    def mkdir(self, path, mode):
-        return self.operations('mkdir', path, mode)
-    
-    def unlink(self, path):
-        return self.operations('unlink', path)
-    
-    def rmdir(self, path):
-        return self.operations('rmdir', path)
-    
-    def symlink(self, source, target):
-        return self.operations('symlink', target, source)
-    
-    def rename(self, old, new):
-        return self.operations('rename', old, new)
-    
-    def link(self, source, target):
-        return self.operations('link', target, source)
-    
-    def chmod(self, path, mode):
-        return self.operations('chmod', path, mode)
-    
-    def chown(self, path, uid, gid):
-        # Check if any of the arguments is a -1 that has overflowed
-        if c_uid_t(uid + 1).value == 0:
-            uid = -1
-        if c_gid_t(gid + 1).value == 0:
-            gid = -1
-        return self.operations('chown', path, uid, gid)
-    
-    def truncate(self, path, length):
-        return self.operations('truncate', path, length)
-    
-    def open(self, path, fip):
-        fi = fip.contents
-        if self.raw_fi:
-            return self.operations('open', path, fi)
-        else:
-            fi.fh = self.operations('open', path, fi.flags)
-            return 0
-    
-    def read(self, path, buf, size, offset, fip):
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        ret = self.operations('read', path, size, offset, fh)
-        if not ret:
-            return 0
-        data = create_string_buffer(ret[:size], size)
-        memmove(buf, data, size)
-        return size
-    
-    def write(self, path, buf, size, offset, fip):
-        data = string_at(buf, size)
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        return self.operations('write', path, data, offset, fh)
-    
-    def statfs(self, path, buf):
-        stv = buf.contents
-        attrs = self.operations('statfs', path)
-        for key, val in attrs.items():
-            if hasattr(stv, key):
-                setattr(stv, key, val)
-        return 0
-    
-    def flush(self, path, fip):
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        return self.operations('flush', path, fh)
-    
-    def release(self, path, fip):
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        return self.operations('release', path, fh)
-    
-    def fsync(self, path, datasync, fip):
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        return self.operations('fsync', path, datasync, fh)
-    
-    def setxattr(self, path, name, value, size, options, *args):
-        data = string_at(value, size)
-        return self.operations('setxattr', path, name, data, options, *args)
-    
-    def getxattr(self, path, name, value, size, *args):
-        ret = self.operations('getxattr', path, name, *args)
-        retsize = len(ret)
-        buf = create_string_buffer(ret, retsize)    # Does not add trailing 0
-        if bool(value):
-            if retsize > size:
-                return -ERANGE
-            memmove(value, buf, retsize)
-        return retsize
-    
-    def listxattr(self, path, namebuf, size):
-        ret = self.operations('listxattr', path)
-        buf = create_string_buffer('\x00'.join(ret)) if ret else ''
-        bufsize = len(buf)
-        if bool(namebuf):
-            if bufsize > size:
-                return -ERANGE
-            memmove(namebuf, buf, bufsize)
-        return bufsize
-    
-    def removexattr(self, path, name):
-        return self.operations('removexattr', path, name)
-    
-    def opendir(self, path, fip):
-        # Ignore raw_fi
-        fip.contents.fh = self.operations('opendir', path)
-        return 0
-    
-    def readdir(self, path, buf, filler, offset, fip):
-        # Ignore raw_fi
-        for item in self.operations('readdir', path, fip.contents.fh):
-            if isinstance(item, str):
-                name, st, offset = item, None, 0
-            else:
-                name, attrs, offset = item
-                if attrs:
-                    st = c_stat()
-                    set_st_attrs(st, attrs)
-                else:
-                    st = None
-            if filler(buf, name, st, offset) != 0:
-                break
-        return 0
-    
-    def releasedir(self, path, fip):
-        # Ignore raw_fi
-        return self.operations('releasedir', path, fip.contents.fh)
-    
-    def fsyncdir(self, path, datasync, fip):
-        # Ignore raw_fi
-        return self.operations('fsyncdir', path, datasync, fip.contents.fh)
-    
-    def init(self, conn):
-        return self.operations('init', '/')
-    
-    def destroy(self, private_data):
-        return self.operations('destroy', '/')
-    
-    def access(self, path, amode):
-        return self.operations('access', path, amode)
-    
-    def create(self, path, mode, fip):
-        fi = fip.contents
-        if self.raw_fi:
-            return self.operations('create', path, mode, fi)
-        else:
-            fi.fh = self.operations('create', path, mode)
-            return 0
-    
-    def ftruncate(self, path, length, fip):
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        return self.operations('truncate', path, length, fh)
-    
-    def fgetattr(self, path, buf, fip):
-        memset(buf, 0, sizeof(c_stat))
-        st = buf.contents
-        fh = fip and (fip.contents if self.raw_fi else fip.contents.fh)
-        attrs = self.operations('getattr', path, fh)
-        set_st_attrs(st, attrs)
-        return 0
-    
-    def lock(self, path, fip, cmd, lock):
-        fh = fip.contents if self.raw_fi else fip.contents.fh
-        return self.operations('lock', path, fh, cmd, lock)
-    
-    def utimens(self, path, buf):
-        if buf:
-            atime = time_of_timespec(buf.contents.actime)
-            mtime = time_of_timespec(buf.contents.modtime)
-            times = (atime, mtime)
-        else:
-            times = None
-        return self.operations('utimens', path, times)
-    
-    def bmap(self, path, blocksize, idx):
-        return self.operations('bmap', path, blocksize, idx)
-
-
-class Operations(object):
-    """This class should be subclassed and passed as an argument to FUSE on
-       initialization. All operations should raise a FuseOSError exception
-       on error.
-       
-       When in doubt of what an operation should do, check the FUSE header
-       file or the corresponding system call man page."""
-    
-    def __call__(self, op, *args):
-        if not hasattr(self, op):
-            raise FuseOSError(EFAULT)
-        return getattr(self, op)(*args)
-    
-    def access(self, path, amode):
-        return 0
-    
-    bmap = None
-    
-    def chmod(self, path, mode):
-        raise FuseOSError(EROFS)
-    
-    def chown(self, path, uid, gid):
-        raise FuseOSError(EROFS)
-    
-    def create(self, path, mode, fi=None):
-        """When raw_fi is False (default case), fi is None and create should
-           return a numerical file handle.
-           When raw_fi is True the file handle should be set directly by create
-           and return 0."""
-        raise FuseOSError(EROFS)
-    
-    def destroy(self, path):
-        """Called on filesystem destruction. Path is always /"""
-        pass
-    
-    def flush(self, path, fh):
-        return 0
-    
-    def fsync(self, path, datasync, fh):
-        return 0
-    
-    def fsyncdir(self, path, datasync, fh):
-        return 0
-    
-    def getattr(self, path, fh=None):
-        """Returns a dictionary with keys identical to the stat C structure
-           of stat(2).
-           st_atime, st_mtime and st_ctime should be floats.
-           NOTE: There is an incombatibility between Linux and Mac OS X concerning
-           st_nlink of directories. Mac OS X counts all files inside the directory,
-           while Linux counts only the subdirectories."""
-        
-        if path != '/':
-            raise FuseOSError(ENOENT)
-        return dict(st_mode=(S_IFDIR | 0755), st_nlink=2)
-    
-    def getxattr(self, path, name, position=0):
-        raise FuseOSError(ENOTSUP)
-    
-    def init(self, path):
-        """Called on filesystem initialization. Path is always /
-           Use it instead of __init__ if you start threads on initialization."""
-        pass
-    
-    def link(self, target, source):
-        raise FuseOSError(EROFS)
-    
-    def listxattr(self, path):
-        return []
-    
-    lock = None
-    
-    def mkdir(self, path, mode):
-        raise FuseOSError(EROFS)
-    
-    def mknod(self, path, mode, dev):
-        raise FuseOSError(EROFS)
-    
-    def open(self, path, flags):
-        """When raw_fi is False (default case), open should return a numerical
-           file handle.
-           When raw_fi is True the signature of open becomes:
-               open(self, path, fi)
-           and the file handle should be set directly."""
-        return 0
-    
-    def opendir(self, path):
-        """Returns a numerical file handle."""
-        return 0
-    
-    def read(self, path, size, offset, fh):
-        """Returns a string containing the data requested."""
-        raise FuseOSError(EIO)
-    
-    def readdir(self, path, fh):
-        """Can return either a list of names, or a list of (name, attrs, offset)
-           tuples. attrs is a dict as in getattr."""
-        return ['.', '..']
-    
-    def readlink(self, path):
-        raise FuseOSError(ENOENT)
-    
-    def release(self, path, fh):
-        return 0
-    
-    def releasedir(self, path, fh):
-        return 0
-    
-    def removexattr(self, path, name):
-        raise FuseOSError(ENOTSUP)
-    
-    def rename(self, old, new):
-        raise FuseOSError(EROFS)
-    
-    def rmdir(self, path):
-        raise FuseOSError(EROFS)
-    
-    def setxattr(self, path, name, value, options, position=0):
-        raise FuseOSError(ENOTSUP)
-    
-    def statfs(self, path):
-        """Returns a dictionary with keys identical to the statvfs C structure
-           of statvfs(3).
-           On Mac OS X f_bsize and f_frsize must be a power of 2 (minimum 512)."""
-        return {}
-    
-    def symlink(self, target, source):
-        raise FuseOSError(EROFS)
-    
-    def truncate(self, path, length, fh=None):
-        raise FuseOSError(EROFS)
-    
-    def unlink(self, path):
-        raise FuseOSError(EROFS)
-    
-    def utimens(self, path, times=None):
-        """Times is a (atime, mtime) tuple. If None use current time."""
-        return 0
-    
-    def write(self, path, data, offset, fh):
-        raise FuseOSError(EROFS)
-
-
-class LoggingMixIn:
-    def __call__(self, op, path, *args):
-        print '->', op, path, repr(args)
-        ret = '[Unhandled Exception]'
-        try:
-            ret = getattr(self, op)(path, *args)
-            return ret
-        except OSError, e:
-            ret = str(e)
-            raise
-        finally:
-            print '<-', op, repr(ret)