65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
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#
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# image.py: Support methods for CD/DVD and ISO image installations.
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#
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# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import os
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import os.path
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import tempfile
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from pyanaconda.modules.common.constants.objects import DEVICE_TREE
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from pyanaconda.modules.common.constants.services import STORAGE
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from pyanaconda.modules.common.errors.storage import MountFilesystemError
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from pyanaconda.payload import utils as payload_utils
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from pyanaconda.anaconda_loggers import get_module_logger
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log = get_module_logger(__name__)
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def find_optical_install_media():
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"""Find a device with a valid optical install media.
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Return the first device containing a valid optical install
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media for this product.
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FIXME: This is duplicated in SetUpCdromSourceTask.run
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:return: a device name or None
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"""
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device_tree = STORAGE.get_proxy(DEVICE_TREE)
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for dev in device_tree.FindOpticalMedia():
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mountpoint = tempfile.mkdtemp()
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try:
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try:
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payload_utils.mount_device(dev, mountpoint)
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except MountFilesystemError:
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continue
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try:
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from pyanaconda.modules.payloads.source.utils import is_valid_install_disk
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if not is_valid_install_disk(mountpoint):
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continue
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finally:
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payload_utils.unmount_device(dev, mountpoint)
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finally:
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os.rmdir(mountpoint)
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return dev
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return None
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