51 lines
1.4 KiB
Python
51 lines
1.4 KiB
Python
# Copyright (C) 2012 Canonical Ltd.
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# Copyright (C) 2012, 2013 Hewlett-Packard Development Company, L.P.
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# Copyright (C) 2012 Yahoo! Inc.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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# Author: Juerg Haefliger <juerg.haefliger@hp.com>
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# Author: Joshua Harlow <harlowja@yahoo-inc.com>
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#
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# This file is part of cloud-init. See LICENSE file for license information.
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import logging
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from cloudinit import util
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from cloudinit.distros.parsers.sys_conf import SysConf
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LOG = logging.getLogger(__name__)
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# Helper function to update a RHEL/SUSE /etc/sysconfig/* file
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def update_sysconfig_file(fn, adjustments, allow_empty=False):
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if not adjustments:
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return
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(exists, contents) = read_sysconfig_file(fn)
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updated_am = 0
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for k, v in adjustments.items():
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if v is None:
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continue
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v = str(v)
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if (not v) and (not allow_empty):
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continue
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contents[k] = v
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updated_am += 1
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if updated_am:
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lines = [
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str(contents),
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]
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if not exists:
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lines.insert(0, util.make_header())
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util.write_file(fn, "\n".join(lines) + "\n", 0o644)
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# Helper function to read a RHEL/SUSE /etc/sysconfig/* file
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def read_sysconfig_file(fn):
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exists = False
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try:
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contents = util.load_text_file(fn).splitlines()
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exists = True
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except IOError:
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contents = []
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return (exists, SysConf(contents))
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