def open(self, file, flags, mode=0o777, *args, **kw):
"""Called for low-level os.open()"""
if flags & WRITE_FLAGS and not self._ok(file):
self._violation("os.open", file, flags, mode, *args, **kw)
return _os.open(file, flags, mode, *args, **kw)
python类file()的实例源码
def run(self, func):
"""Run 'func' under os sandboxing"""
try:
self._copy(self)
if _file:
builtins.file = self._file
builtins.open = self._open
self._active = True
return func()
finally:
self._active = False
if _file:
builtins.file = _file
builtins.open = _open
self._copy(_os)
def _file(self, path, mode='r', *args, **kw):
if mode not in ('r', 'rt', 'rb', 'rU', 'U') and not self._ok(path):
self._violation("file", path, mode, *args, **kw)
return _file(path, mode, *args, **kw)
def open(self, file, flags, mode=0o777, *args, **kw):
"""Called for low-level os.open()"""
if flags & WRITE_FLAGS and not self._ok(file):
self._violation("os.open", file, flags, mode, *args, **kw)
return _os.open(file, flags, mode, *args, **kw)
def __enter__(self):
self._copy(self)
if _file:
builtins.file = self._file
builtins.open = self._open
self._active = True
def __exit__(self, exc_type, exc_value, traceback):
self._active = False
if _file:
builtins.file = _file
builtins.open = _open
self._copy(_os)
def _file(self, path, mode='r', *args, **kw):
if mode not in ('r', 'rt', 'rb', 'rU', 'U') and not self._ok(path):
self._violation("file", path, mode, *args, **kw)
return _file(path, mode, *args, **kw)
def open(self, file, flags, mode=0o777, *args, **kw):
"""Called for low-level os.open()"""
if flags & WRITE_FLAGS and not self._ok(file):
self._violation("os.open", file, flags, mode, *args, **kw)
return _os.open(file, flags, mode, *args, **kw)
def __enter__(self):
self._copy(self)
if _file:
builtins.file = self._file
builtins.open = self._open
self._active = True
def __exit__(self, exc_type, exc_value, traceback):
self._active = False
if _file:
builtins.file = _file
builtins.open = _open
self._copy(_os)
def _file(self, path, mode='r', *args, **kw):
if mode not in ('r', 'rt', 'rb', 'rU', 'U') and not self._ok(path):
self._violation("file", path, mode, *args, **kw)
return _file(path, mode, *args, **kw)
def open(self, file, flags, mode=0o777, *args, **kw):
"""Called for low-level os.open()"""
if flags & WRITE_FLAGS and not self._ok(file):
self._violation("os.open", file, flags, mode, *args, **kw)
return _os.open(file, flags, mode, *args, **kw)
def __enter__(self):
self._copy(self)
if _file:
builtins.file = self._file
builtins.open = self._open
self._active = True
def __exit__(self, exc_type, exc_value, traceback):
self._active = False
if _file:
builtins.file = _file
builtins.open = _open
self._copy(_os)
def _file(self, path, mode='r', *args, **kw):
if mode not in ('r', 'rt', 'rb', 'rU', 'U') and not self._ok(path):
self._violation("file", path, mode, *args, **kw)
return _file(path, mode, *args, **kw)
def open(self, file, flags, mode=0o777, *args, **kw):
"""Called for low-level os.open()"""
if flags & WRITE_FLAGS and not self._ok(file):
self._violation("os.open", file, flags, mode, *args, **kw)
return _os.open(file, flags, mode, *args, **kw)
def __enter__(self):
self._copy(self)
if _file:
builtins.file = self._file
builtins.open = self._open
self._active = True
def __exit__(self, exc_type, exc_value, traceback):
self._active = False
if _file:
builtins.file = _file
builtins.open = _open
self._copy(_os)
def _file(self, path, mode='r', *args, **kw):
if mode not in ('r', 'rt', 'rb', 'rU', 'U') and not self._ok(path):
self._violation("file", path, mode, *args, **kw)
return _file(path, mode, *args, **kw)
def open(self, file, flags, mode=0o777, *args, **kw):
"""Called for low-level os.open()"""
if flags & WRITE_FLAGS and not self._ok(file):
self._violation("os.open", file, flags, mode, *args, **kw)
return _os.open(file, flags, mode, *args, **kw)
