diff options
author | Lars Wirzenius <liw@liw.fi> | 2011-10-17 20:19:41 +0100 |
---|---|---|
committer | Lars Wirzenius <liw@liw.fi> | 2011-10-17 20:19:41 +0100 |
commit | e55fece2655675ff4b151134fe5e0f222f4c8d70 (patch) | |
tree | db08e3057188c59db340e2a1600bc0c77c462c52 /morphlib/bins.py | |
parent | 6961416a28270d3483d7ffd73539294cdb874403 (diff) | |
download | morph-e55fece2655675ff4b151134fe5e0f222f4c8d70.tar.gz |
Add functions for creating and unpacking binary chunks.
Diffstat (limited to 'morphlib/bins.py')
-rw-r--r-- | morphlib/bins.py | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/morphlib/bins.py b/morphlib/bins.py new file mode 100644 index 00000000..de946020 --- /dev/null +++ b/morphlib/bins.py @@ -0,0 +1,49 @@ +# Copyright (C) 2011 Codethink Limited +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + + +'''Functions for dealing with Baserock binaries. + +Binaries are chunks, strata, and system images. + +''' + + +import logging +import tarfile + +import morphlib + + +def create_chunk(rootdir, chunk_filename): + '''Create a chunk from the contents of a directory.''' + logging.debug('Creating chunk file %s from %s' % (chunk_filename, rootdir)) + tar = tarfile.open(name=chunk_filename, mode='w:gz') + tar.add(rootdir, arcname='.') + tar.close() + + +def unpack_chunk(chunk_filename, dirname): + '''Unpack a chunk into a directory. + + The directory must exist already. + + ''' + + logging.debug('Unpacking chunk %s into %s' % (chunk_filename, dirname)) + tar = tarfile.open(name=chunk_filename) + tar.extractall(path=dirname) + tar.close() + |