duplicity.backends.xorrisobackend module

class duplicity.backends.xorrisobackend.Xorriso(device, xorriso_path='xorriso', xorriso_args=None)

Bases: object

Wrapper around a xorriso subprocess.

__handle_xorriso_error(stderr)

Detect errors from stderr of xorriso. Convert the errors into exceptions.

__init__(device, xorriso_path='xorriso', xorriso_args=None)

__recv_stdout_stderr()

__send_cmd(*args)

__start_subprocess(commandline)

commit()

Commit changes and write them to the image.

cp(files, dest)

Copy file to the ISO image. Does not commit the changes yet.

end()

Terminate the xorriso subprocess

extract(files, dest)

Extract files from the ISO image.

ls(pattern='.')

List files on optical disc.

lsl(pattern='.')

List files on optical disc.

rm(files)

Remove a list of files from the image. Does not commit the changes yet.

class duplicity.backends.xorrisobackend.XorrisoBackend(parsed_url)

Bases: Backend

Backend for writing to optical discs or ISO images using xorriso.

Simple URLs look like xorriso:///dev/sr0 if the backup location is at the root of the filesystem. or if xorriso://dev/sr0:/path/to/a/directory/on/iso if the backup location is in a directory.

Especially for testing also an ISO file can be used: xorriso://path/to/image.iso

The path to the xorriso executable can be specified with teh XORRISO_PATH environment variable. Environment variables:

• XORRISO_PATH: Alternative path to the xorriso executable

• XORRISO_WRITE_SPEED: Specify the speed for writing to the optical disc. One of [“min”, “max”].

• XORRISO_ASSERT_VOLID: Abort when the volume ID of the ISO image does not match the given value.

• XORRISO_ARGS: Arbitrary arguments to xorriso, inserted before the filesystem operations. For experts only.

__init__(parsed_url)

_close()

_delete(filename)

_delete_list(filenames)

_get(filename, local_path)

_list()

_put(source_path, remote_filename)

_query(filename)