mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-12-21 13:47:50 +00:00
84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 GNS3 Technologies Inc.
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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 3 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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Entry point of the server. It's support daemonize the process
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"""
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# WARNING
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# Due to buggy user machines we choose to put this as the first loading
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# otherwise the egg cache is initialized in his standard location and
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# if is not writetable the application crash. It's the user fault
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# because one day the user as used sudo to run an egg and break his
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# filesystem permissions, but it's a common mistake.
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import gns3server.utils.get_resource
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import os
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import sys
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# To avoid strange bug later we switch the event loop before any other operation
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if sys.platform.startswith("win"):
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import asyncio
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# use the Proactor event loop on Windows
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loop = asyncio.ProactorEventLoop()
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asyncio.set_event_loop(loop)
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def daemonize():
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"""
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Do the UNIX double-fork magic for properly detaching process
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"""
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try:
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pid = os.fork()
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if pid > 0:
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# Exit first parent
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sys.exit(0)
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except OSError as e:
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print("First fork failed: %d (%s)\n" % (e.errno, e.strerror), file=sys.stderr)
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sys.exit(1)
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# Decouple from parent environment
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os.setsid()
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os.umask(0o007)
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# Do second fork
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try:
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pid = os.fork()
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if pid > 0:
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# Exit from second parent
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sys.exit(0)
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except OSError as e:
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print("Second fork failed: %d (%s)\n" % (e.errno, e.strerror), file=sys.stderr)
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sys.exit(1)
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def main():
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"""
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Entry point for GNS3 server
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"""
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if not sys.platform.startswith("win"):
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if "--daemon" in sys.argv:
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daemonize()
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from gns3server.run import run
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run()
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if __name__ == '__main__':
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main()
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