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Red Hat Bugzilla – Attachment 314394 Details for
Bug 459276
NetworkManager doesn't honor the NTP servers provided by the DHCP server
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Temporary workaround (python dbus listener)
dbus_set_ntp_servers (text/plain), 2.90 KB, created by
Anders Blomdell
on 2008-08-15 16:20:24 UTC
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Description:
Temporary workaround (python dbus listener)
Filename:
MIME Type:
Creator:
Anders Blomdell
Created:
2008-08-15 16:20:24 UTC
Size:
2.90 KB
patch
obsolete
>#!/usr/bin/python > >import dbus >import dbus.glib >import dbus.service >import gobject >import re >import os >import sys >import syslog > >class LogDevice: > def __init__(self, facility): > self.line = '' > self.facility = facility > > def write(self, s): > self.line += s > if '\n' in self.line: > syslog.syslog(self.facility, self.line) > self.line = '' > > >def daemonize(): > try: > pid = os.fork() > except OSError, e: > raise Exception, "%s [%d]" % (e.strerror, e.errno) > > if (pid != 0): > os._exit(0) # Exit parent > > # When we get here we are first child > os.setsid() > > try: > pid = os.fork() # Fork a second child. > except OSError, e: > raise Exception, "%s [%d]" % (e.strerror, e.errno) > > if (pid != 0): > os._exit(0) # Exit first child > > # When we qet here we are second child > os.chdir("/") > > #maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1] > #if (maxfd == resource.RLIM_INFINITY): > # maxfd = MAXFD > > # Iterate through and close all file descriptors. > # for fd in range(0, maxfd): > # try: > # os.close(fd) > # except OSError: # ERROR, fd wasn't open to begin with (ignored) > # pass > > dev_null = os.open("/dev/null", os.O_RDWR) > os.dup2(dev_null, 0) > os.dup2(dev_null, 1) > os.dup2(dev_null, 2) > os.close(dev_null) > > sys.stdout = LogDevice(syslog.LOG_DAEMON | syslog.LOG_WARNING) > sys.stderr = LogDevice(syslog.LOG_DAEMON | syslog.LOG_ERR) > return 0 > >def set_ntp_servers(arg): > # Transform byte array to strings > dict = {} > for key in arg: > value = "".join(map(lambda x: str(x), arg[key])) > dict[key] = value > > # Handle message > if dict.has_key("new_ntp_servers"): > old_servers = [] > new_servers = dict["new_ntp_servers"].split(" ") > new_servers.sort() > old = open("/etc/ntp.conf") > new = open("/etc/ntp.conf.new", "w") > for l in old: > m = re.match("^\s*server\s+(\S+)", l) > if m: > old_servers.append(m.group(1)) > else: > new.write(l) > for s in new_servers: > new.write("server %s\n" % s) > new.close() > old.close() > > old_servers.sort() > if new_servers == old_servers: > os.unlink("/etc/ntp.conf") > os.link("/etc/ntp.conf.new", "/etc/ntp.conf") > os.unlink("/etc/ntp.conf.new") > os.system("/sbin/service ntpd condrestart") > > >if __name__ == "__main__": > daemonize() > bus = dbus.SystemBus() > bus.add_signal_receiver(set_ntp_servers, > path="/", > bus_name="org.freedesktop.nm_dhcp_client", > dbus_interface="org.freedesktop.nm_dhcp_client", > signal_name="Event") > > loop = gobject.MainLoop() > loop.run()
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bug 459276
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