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87 lines
3.0 KiB
87 lines
3.0 KiB
# tarpayload.py
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# Tar archive software payload management.
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#
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# Copyright (C) 2012 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): David Lehman <dlehman@redhat.com>
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#
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"""
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TODO
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- error handling!!!
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- document all methods
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"""
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import logging
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log = logging.getLogger("anaconda")
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try:
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import tarfile
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except ImportError:
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log.error("import of tarfile failed")
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tarfile = None
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from pyanaconda.packaging import ArchivePayload, PayloadError, versionCmp
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from pyanaconda import iutil
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# TarPayload is not yet fully implemented
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# pylint: disable=abstract-method
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class TarPayload(ArchivePayload):
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""" A TarPayload unpacks a single tar archive onto the target system. """
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def __init__(self, data):
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if tarfile is None:
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raise PayloadError("unsupported payload type")
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super(TarPayload, self).__init__(data)
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self.archive = None
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self.image_file = None
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def setup(self, storage, instClass):
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super(TarPayload, self).setup(storage, instClass)
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try:
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self.archive = tarfile.open(self.image_file)
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except (tarfile.ReadError, tarfile.CompressionError) as e:
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# maybe we only need to catch ReadError and CompressionError here
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log.error("opening tar archive %s: %s", self.image_file, e)
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raise PayloadError("invalid payload format")
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def unsetup(self):
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super(TarPayload, self).unsetup()
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self.archive = None
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@property
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def requiredSpace(self):
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byte_count = sum(m.size for m in self.archive.getmembers())
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return byte_count / (1024.0 * 1024.0) # FIXME: Size
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@property
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def kernelVersionList(self):
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names = self.archive.getnames()
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# Strip out vmlinuz- from the names
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return sorted((n.split("/")[-1][8:] for n in names if "boot/vmlinuz-" in n),
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cmp=versionCmp)
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def install(self):
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try:
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self.archive.extractall(path=iutil.getSysroot())
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except (tarfile.ExtractError, tarfile.CompressionError) as e:
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log.error("extracting tar archive %s: %s", self.image_file, e)
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