1de8d1e8dd
The ubuntu/debian networking file parsing function really is more generic than just a rhel utility function and can be used by others that want to use this functionality for there own purposes (say in writing down a freebsd network format instead) so moving this to its own module to encourage its usage outside of rhel.
90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
# vi: ts=4 expandtab
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#
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# 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 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 version 3, as
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# published by the Free Software Foundation.
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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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from cloudinit.distros.parsers.resolv_conf import ResolvConf
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from cloudinit.distros.parsers.sys_conf import SysConf
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from cloudinit import log as logging
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from cloudinit import util
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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 len(v) == 0 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", 0644)
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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_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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# Helper function to update RHEL/SUSE /etc/resolv.conf
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def update_resolve_conf_file(fn, dns_servers, search_servers):
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try:
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r_conf = ResolvConf(util.load_file(fn))
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r_conf.parse()
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except IOError:
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util.logexc(LOG, "Failed at parsing %s reverting to an empty "
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"instance", fn)
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r_conf = ResolvConf('')
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r_conf.parse()
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if dns_servers:
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for s in dns_servers:
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try:
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r_conf.add_nameserver(s)
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except ValueError:
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util.logexc(LOG, "Failed at adding nameserver %s", s)
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if search_servers:
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for s in search_servers:
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try:
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r_conf.add_search_domain(s)
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except ValueError:
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util.logexc(LOG, "Failed at adding search domain %s", s)
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util.write_file(fn, str(r_conf), 0644)
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