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135 lines
3.5 KiB
Python
135 lines
3.5 KiB
Python
#!/usr/bin/env python
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# -*- mode: python; -*-
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#============================================================================
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# Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
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# Copyright (C) 2005-2006 XenSource Inc
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#============================================================================
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"""Xen management daemon.
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Provides console server and HTTP management api.
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Run:
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xend start
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Restart:
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xend restart
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The daemon is stopped with:
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xend stop
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The daemon should reconnect to device control interfaces
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and recover its state when restarted.
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"""
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import os
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import os.path
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import sys
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import socket
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import signal
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import time
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import commands
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# Use the auxbin module in Xend to determine the correct Python path. We
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# take the first installed instance of auxbin that we find, and then run it
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# to determine the correct path, appending that to sys.path.
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AUXBIN = 'xen/util/auxbin.py'
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for p in ['python%s' % sys.version[:3], 'python']:
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for l in ['/usr/lib64', '/usr/lib']:
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d = os.path.join(l, p)
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if os.path.exists(os.path.join(d, AUXBIN)):
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sys.path.append(d)
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import xen.util.auxbin
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libpath = xen.util.auxbin.libpath()
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sys.path = sys.path[:-1]
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sys.path.append(libpath)
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break
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from xen.xend.server import SrvDaemon
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class CheckError(ValueError):
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pass
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def hline():
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print >>sys.stderr, "*" * 70
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def msg(message):
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print >>sys.stderr, "*" * 3, message
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def check_logging():
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"""Check python logging is installed and raise an error if not.
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Logging is standard from Python 2.3 on.
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"""
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try:
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import logging
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except ImportError:
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hline()
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msg("Python logging is not installed.")
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msg("Use 'make install-logging' at the xen root to install.")
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msg("")
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msg("Alternatively download and install from")
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msg("http://www.red-dove.com/python_logging.html")
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hline()
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raise CheckError("logging is not installed")
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def check_user():
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"""Check that the effective user id is 0 (root).
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"""
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if os.geteuid() != 0:
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hline()
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msg("Xend must be run as root.")
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hline()
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raise CheckError("invalid user")
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def start_xenstored():
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XENSTORED_TRACE = os.getenv("XENSTORED_TRACE")
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cmd = "xenstored --pid-file=/var/run/xenstore.pid"
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if XENSTORED_TRACE:
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cmd += " -T /var/log/xenstored-trace.log"
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s,o = commands.getstatusoutput(cmd)
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def start_consoled():
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if os.fork() == 0:
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os.execvp('xenconsoled', ['xenconsoled'])
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def start_blktapctrl():
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if os.fork() == 0:
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os.execvp('blktapctrl', ['blktapctrl'])
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def main():
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try:
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check_logging()
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check_user()
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except CheckError:
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sys.exit(1)
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daemon = SrvDaemon.instance()
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if not sys.argv[1:]:
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print 'usage: %s {start|stop|restart}' % sys.argv[0]
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elif sys.argv[1] == 'start':
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start_xenstored()
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start_consoled()
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start_blktapctrl()
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return daemon.start()
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elif sys.argv[1] == 'trace_start':
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start_xenstored()
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start_consoled()
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start_blktapctrl()
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return daemon.start(trace=1)
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elif sys.argv[1] == 'stop':
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return daemon.stop()
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elif sys.argv[1] == 'restart':
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start_xenstored()
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start_consoled()
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start_blktapctrl()
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return daemon.stop() or daemon.start()
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elif sys.argv[1] == 'status':
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return daemon.status()
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else:
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print 'not an option:', sys.argv[1]
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return 1
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if __name__ == '__main__':
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sys.exit(main())
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