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1082 lines
44 KiB
1082 lines
44 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2014 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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QEMU VM management (creates command line, processes, files etc.) in
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order to run a QEMU VM.
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"""
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import sys
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import os
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import shutil
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import subprocess
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import shlex
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import asyncio
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import socket
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from .qemu_error import QemuError
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from ..adapters.ethernet_adapter import EthernetAdapter
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from ..nios.nio_udp import NIOUDP
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from ..nios.nio_tap import NIOTAP
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from ..nios.nio_nat import NIONAT
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from ..base_vm import BaseVM
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from ...schemas.qemu import QEMU_OBJECT_SCHEMA
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import logging
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log = logging.getLogger(__name__)
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class QemuVM(BaseVM):
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module_name = 'qemu'
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"""
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QEMU VM implementation.
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:param name: Qemu VM name
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:param vm_id: Qemu VM identifier
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:param project: Project instance
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:param manager: Manager instance
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:param console: TCP console port
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:param qemu_path: path to the QEMU binary
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:param console: TCP console port
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"""
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def __init__(self, name, vm_id, project, manager, qemu_path=None, console=None):
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super().__init__(name, vm_id, project, manager, console=console)
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server_config = manager.config.get_section_config("Server")
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self._host = server_config.get("host", "127.0.0.1")
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self._monitor_host = server_config.get("monitor_host", "127.0.0.1")
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self._command = []
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self._started = False
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self._process = None
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self._cpulimit_process = None
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self._monitor = None
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self._stdout_file = ""
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# QEMU VM settings
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self._qemu_path = qemu_path
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self._hda_disk_image = ""
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self._hdb_disk_image = ""
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self._hdc_disk_image = ""
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self._hdd_disk_image = ""
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self._options = ""
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self._ram = 256
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self._ethernet_adapters = []
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self._adapter_type = "e1000"
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self._initrd = ""
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self._kernel_image = ""
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self._kernel_command_line = ""
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self._legacy_networking = False
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self._cpu_throttling = 0 # means no CPU throttling
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self._process_priority = "low"
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self.adapters = 1 # creates 1 adapter by default
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log.info('QEMU VM "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
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@property
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def monitor(self):
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"""
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Returns the TCP monitor port.
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:returns: monitor port (integer)
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"""
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return self._monitor
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@property
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def qemu_path(self):
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"""
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Returns the QEMU binary path for this QEMU VM.
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:returns: QEMU path
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"""
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return self._qemu_path
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@qemu_path.setter
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def qemu_path(self, qemu_path):
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"""
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Sets the QEMU binary path this QEMU VM.
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:param qemu_path: QEMU path
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"""
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if qemu_path and os.pathsep not in qemu_path:
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qemu_path = shutil.which(qemu_path)
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if qemu_path is None:
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raise QemuError("QEMU binary path is not set or not found in the path")
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if not os.path.exists(qemu_path):
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raise QemuError("QEMU binary '{}' is not accessible".format(qemu_path))
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if not os.access(qemu_path, os.X_OK):
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raise QemuError("QEMU binary '{}' is not executable".format(qemu_path))
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self._qemu_path = qemu_path
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log.info('QEMU VM "{name}" [{id}] has set the QEMU path to {qemu_path}'.format(name=self._name,
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id=self._id,
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qemu_path=qemu_path))
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@property
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def hda_disk_image(self):
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"""
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Returns the hda disk image path for this QEMU VM.
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:returns: QEMU hda disk image path
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"""
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return self._hda_disk_image
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@hda_disk_image.setter
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def hda_disk_image(self, hda_disk_image):
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"""
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Sets the hda disk image for this QEMU VM.
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:param hda_disk_image: QEMU hda disk image path
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"""
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self._hda_disk_image = self.manager.get_abs_image_path(hda_disk_image)
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log.info('QEMU VM "{name}" [{id}] has set the QEMU hda disk image path to {disk_image}'.format(name=self._name,
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id=self._id,
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disk_image=self._hda_disk_image))
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@property
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def hdb_disk_image(self):
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"""
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Returns the hdb disk image path for this QEMU VM.
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:returns: QEMU hdb disk image path
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"""
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return self._hdb_disk_image
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@hdb_disk_image.setter
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def hdb_disk_image(self, hdb_disk_image):
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"""
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Sets the hdb disk image for this QEMU VM.
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:param hdb_disk_image: QEMU hdb disk image path
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"""
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self._hdb_disk_image = self.manager.get_abs_image_path(hdb_disk_image)
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log.info('QEMU VM "{name}" [{id}] has set the QEMU hdb disk image path to {disk_image}'.format(name=self._name,
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id=self._id,
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disk_image=self._hdb_disk_image))
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@property
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def hdc_disk_image(self):
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"""
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Returns the hdc disk image path for this QEMU VM.
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:returns: QEMU hdc disk image path
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"""
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return self._hdc_disk_image
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@hdc_disk_image.setter
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def hdc_disk_image(self, hdc_disk_image):
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"""
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Sets the hdc disk image for this QEMU VM.
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:param hdc_disk_image: QEMU hdc disk image path
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"""
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self._hdc_disk_image = self.manager.get_abs_image_path(hdc_disk_image)
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log.info('QEMU VM "{name}" [{id}] has set the QEMU hdc disk image path to {disk_image}'.format(name=self._name,
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id=self._id,
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disk_image=self._hdc_disk_image))
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@property
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def hdd_disk_image(self):
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"""
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Returns the hdd disk image path for this QEMU VM.
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:returns: QEMU hdd disk image path
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"""
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return self._hdd_disk_image
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@hdd_disk_image.setter
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def hdd_disk_image(self, hdd_disk_image):
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"""
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Sets the hdd disk image for this QEMU VM.
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:param hdd_disk_image: QEMU hdd disk image path
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"""
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self._hdd_disk_image = hdd_disk_image
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self._hdd_disk_image = self.manager.get_abs_image_path(hdd_disk_image)
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log.info('QEMU VM "{name}" [{id}] has set the QEMU hdd disk image path to {disk_image}'.format(name=self._name,
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id=self._id,
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disk_image=self._hdd_disk_image))
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@property
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def adapters(self):
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"""
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Returns the number of Ethernet adapters for this QEMU VM.
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:returns: number of adapters
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"""
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return len(self._ethernet_adapters)
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@adapters.setter
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def adapters(self, adapters):
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"""
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Sets the number of Ethernet adapters for this QEMU VM.
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:param adapters: number of adapters
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"""
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self._ethernet_adapters.clear()
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for adapter_number in range(0, adapters):
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self._ethernet_adapters.append(EthernetAdapter())
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log.info('QEMU VM "{name}" [{id}]: number of Ethernet adapters changed to {adapters}'.format(name=self._name,
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id=self._id,
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adapters=adapters))
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@property
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def adapter_type(self):
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"""
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Returns the adapter type for this QEMU VM.
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:returns: adapter type (string)
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"""
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return self._adapter_type
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@adapter_type.setter
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def adapter_type(self, adapter_type):
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"""
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Sets the adapter type for this QEMU VM.
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:param adapter_type: adapter type (string)
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"""
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self._adapter_type = adapter_type
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log.info('QEMU VM "{name}" [{id}]: adapter type changed to {adapter_type}'.format(name=self._name,
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id=self._id,
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adapter_type=adapter_type))
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@property
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def legacy_networking(self):
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"""
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Returns either QEMU legacy networking commands are used.
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:returns: boolean
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"""
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return self._legacy_networking
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@legacy_networking.setter
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def legacy_networking(self, legacy_networking):
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"""
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Sets either QEMU legacy networking commands are used.
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:param legacy_networking: boolean
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"""
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if legacy_networking:
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log.info('QEMU VM "{name}" [{id}] has enabled legacy networking'.format(name=self._name, id=self._id))
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else:
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log.info('QEMU VM "{name}" [{id}] has disabled legacy networking'.format(name=self._name, id=self._id))
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self._legacy_networking = legacy_networking
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@property
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def cpu_throttling(self):
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"""
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Returns the percentage of CPU allowed.
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:returns: integer
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"""
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return self._cpu_throttling
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@cpu_throttling.setter
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def cpu_throttling(self, cpu_throttling):
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"""
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Sets the percentage of CPU allowed.
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:param cpu_throttling: integer
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"""
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log.info('QEMU VM "{name}" [{id}] has set the percentage of CPU allowed to {cpu}'.format(name=self._name,
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id=self._id,
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cpu=cpu_throttling))
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self._cpu_throttling = cpu_throttling
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self._stop_cpulimit()
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if cpu_throttling:
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self._set_cpu_throttling()
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@property
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def process_priority(self):
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"""
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Returns the process priority.
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:returns: string
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"""
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return self._process_priority
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@process_priority.setter
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def process_priority(self, process_priority):
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"""
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Sets the process priority.
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:param process_priority: string
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"""
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log.info('QEMU VM "{name}" [{id}] has set the process priority to {priority}'.format(name=self._name,
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id=self._id,
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priority=process_priority))
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self._process_priority = process_priority
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@property
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def ram(self):
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"""
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Returns the RAM amount for this QEMU VM.
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:returns: RAM amount in MB
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"""
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return self._ram
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@ram.setter
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def ram(self, ram):
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"""
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Sets the amount of RAM for this QEMU VM.
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:param ram: RAM amount in MB
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"""
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log.info('QEMU VM "{name}" [{id}] has set the RAM to {ram}'.format(name=self._name, id=self._id, ram=ram))
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self._ram = ram
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@property
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def options(self):
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"""
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Returns the options for this QEMU VM.
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:returns: QEMU options
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"""
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return self._options
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@options.setter
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def options(self, options):
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"""
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Sets the options for this QEMU VM.
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:param options: QEMU options
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"""
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log.info('QEMU VM "{name}" [{id}] has set the QEMU options to {options}'.format(name=self._name,
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id=self._id,
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options=options))
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self._options = options
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@property
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def initrd(self):
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"""
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Returns the initrd path for this QEMU VM.
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:returns: QEMU initrd path
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"""
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return self._initrd
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@initrd.setter
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def initrd(self, initrd):
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"""
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Sets the initrd path for this QEMU VM.
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:param initrd: QEMU initrd path
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"""
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if not os.path.isabs(initrd):
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server_config = self.manager.config.get_section_config("Server")
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initrd = os.path.join(os.path.expanduser(server_config.get("images_path", "~/GNS3/images")), "QEMU", initrd)
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log.info('QEMU VM "{name}" [{id}] has set the QEMU initrd path to {initrd}'.format(name=self._name,
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id=self._id,
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initrd=initrd))
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self._initrd = initrd
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@property
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def kernel_image(self):
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"""
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Returns the kernel image path for this QEMU VM.
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:returns: QEMU kernel image path
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"""
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return self._kernel_image
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@kernel_image.setter
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def kernel_image(self, kernel_image):
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"""
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Sets the kernel image path for this QEMU VM.
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:param kernel_image: QEMU kernel image path
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"""
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if not os.path.isabs(kernel_image):
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server_config = self.manager.config.get_section_config("Server")
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kernel_image = os.path.join(os.path.expanduser(server_config.get("images_path", "~/GNS3/images")), "QEMU", kernel_image)
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log.info('QEMU VM "{name}" [{id}] has set the QEMU kernel image path to {kernel_image}'.format(name=self._name,
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id=self._id,
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kernel_image=kernel_image))
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self._kernel_image = kernel_image
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@property
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def kernel_command_line(self):
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"""
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Returns the kernel command line for this QEMU VM.
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:returns: QEMU kernel command line
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"""
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return self._kernel_command_line
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@kernel_command_line.setter
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def kernel_command_line(self, kernel_command_line):
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"""
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Sets the kernel command line for this QEMU VM.
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:param kernel_command_line: QEMU kernel command line
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"""
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log.info('QEMU VM "{name}" [{id}] has set the QEMU kernel command line to {kernel_command_line}'.format(name=self._name,
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id=self._id,
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kernel_command_line=kernel_command_line))
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self._kernel_command_line = kernel_command_line
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@asyncio.coroutine
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def _set_process_priority(self):
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"""
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Changes the process priority
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"""
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if sys.platform.startswith("win"):
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try:
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import win32api
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import win32con
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import win32process
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except ImportError:
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log.error("pywin32 must be installed to change the priority class for QEMU VM {}".format(self._name))
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else:
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log.info("setting QEMU VM {} priority class to BELOW_NORMAL".format(self._name))
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handle = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, 0, self._process.pid)
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if self._process_priority == "realtime":
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priority = win32process.REALTIME_PRIORITY_CLASS
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elif self._process_priority == "very high":
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priority = win32process.HIGH_PRIORITY_CLASS
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elif self._process_priority == "high":
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priority = win32process.ABOVE_NORMAL_PRIORITY_CLASS
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elif self._process_priority == "low":
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priority = win32process.BELOW_NORMAL_PRIORITY_CLASS
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elif self._process_priority == "very low":
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priority = win32process.IDLE_PRIORITY_CLASS
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else:
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priority = win32process.NORMAL_PRIORITY_CLASS
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win32process.SetPriorityClass(handle, priority)
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else:
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if self._process_priority == "realtime":
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priority = -20
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elif self._process_priority == "very high":
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priority = -15
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elif self._process_priority == "high":
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priority = -5
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elif self._process_priority == "low":
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priority = 5
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elif self._process_priority == "very low":
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priority = 19
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else:
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priority = 0
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try:
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process = yield from asyncio.create_subprocess_exec('renice', '-n', str(priority), '-p', str(self._process.pid))
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yield from process.wait()
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except (OSError, subprocess.SubprocessError) as e:
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log.error('Could not change process priority for QEMU VM "{}": {}'.format(self._name, e))
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def _stop_cpulimit(self):
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"""
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Stops the cpulimit process.
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"""
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if self._cpulimit_process and self._cpulimit_process.returncode is None:
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self._cpulimit_process.kill()
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try:
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self._process.wait(3)
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except subprocess.TimeoutExpired:
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log.error("Could not kill cpulimit process {}".format(self._cpulimit_process.pid))
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def _set_cpu_throttling(self):
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"""
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Limits the CPU usage for current QEMU process.
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"""
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if not self.is_running():
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return
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try:
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if sys.platform.startswith("win") and hasattr(sys, "frozen"):
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cpulimit_exec = os.path.join(os.path.dirname(os.path.abspath(sys.executable)), "cpulimit", "cpulimit.exe")
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|
else:
|
|
cpulimit_exec = "cpulimit"
|
|
subprocess.Popen([cpulimit_exec, "--lazy", "--pid={}".format(self._process.pid), "--limit={}".format(self._cpu_throttling)], cwd=self.working_dir)
|
|
log.info("CPU throttled to {}%".format(self._cpu_throttling))
|
|
except FileNotFoundError:
|
|
raise QemuError("cpulimit could not be found, please install it or deactivate CPU throttling")
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
raise QemuError("Could not throttle CPU: {}".format(e))
|
|
|
|
@asyncio.coroutine
|
|
def start(self):
|
|
"""
|
|
Starts this QEMU VM.
|
|
"""
|
|
|
|
if self.is_running():
|
|
# resume the VM if it is paused
|
|
yield from self.resume()
|
|
return
|
|
|
|
else:
|
|
|
|
if self._manager.config.get_section_config("Qemu").getboolean("monitor", True):
|
|
try:
|
|
# let the OS find an unused port for the Qemu monitor
|
|
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
|
|
sock.bind((self._monitor_host, 0))
|
|
self._monitor = sock.getsockname()[1]
|
|
except OSError as e:
|
|
raise QemuError("Could not find free port for the Qemu monitor: {}".format(e))
|
|
|
|
self._command = yield from self._build_command()
|
|
try:
|
|
log.info("Starting QEMU: {}".format(self._command))
|
|
self._stdout_file = os.path.join(self.working_dir, "qemu.log")
|
|
log.info("logging to {}".format(self._stdout_file))
|
|
with open(self._stdout_file, "w", encoding="utf-8") as fd:
|
|
self._process = yield from asyncio.create_subprocess_exec(*self._command,
|
|
stdout=fd,
|
|
stderr=subprocess.STDOUT,
|
|
cwd=self.working_dir)
|
|
log.info('QEMU VM "{}" started PID={}'.format(self._name, self._process.pid))
|
|
self._started = True
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
stdout = self.read_stdout()
|
|
log.error("Could not start QEMU {}: {}\n{}".format(self.qemu_path, e, stdout))
|
|
raise QemuError("Could not start QEMU {}: {}\n{}".format(self.qemu_path, e, stdout))
|
|
|
|
self._set_process_priority()
|
|
if self._cpu_throttling:
|
|
self._set_cpu_throttling()
|
|
|
|
@asyncio.coroutine
|
|
def stop(self):
|
|
"""
|
|
Stops this QEMU VM.
|
|
"""
|
|
|
|
# stop the QEMU process
|
|
if self.is_running():
|
|
log.info('Stopping QEMU VM "{}" PID={}'.format(self._name, self._process.pid))
|
|
try:
|
|
self._process.terminate()
|
|
self._process.wait()
|
|
except subprocess.TimeoutExpired:
|
|
self._process.kill()
|
|
if self._process.returncode is None:
|
|
log.warn('QEMU VM "{}" PID={} is still running'.format(self._name, self._process.pid))
|
|
self._process = None
|
|
self._started = False
|
|
self._stop_cpulimit()
|
|
|
|
@asyncio.coroutine
|
|
def _control_vm(self, command, expected=None):
|
|
"""
|
|
Executes a command with QEMU monitor when this VM is running.
|
|
|
|
:param command: QEMU monitor command (e.g. info status, stop etc.)
|
|
:param expected: An array of expected strings
|
|
|
|
:returns: result of the command (matched object or None)
|
|
"""
|
|
|
|
result = None
|
|
if self.is_running() and self._monitor:
|
|
log.debug("Execute QEMU monitor command: {}".format(command))
|
|
try:
|
|
log.info("Connecting to Qemu monitor on {}:{}".format(self._monitor_host, self._monitor))
|
|
reader, writer = yield from asyncio.open_connection(self._monitor_host, self._monitor)
|
|
except OSError as e:
|
|
log.warn("Could not connect to QEMU monitor: {}".format(e))
|
|
return result
|
|
try:
|
|
writer.write(command.encode('ascii') + b"\n")
|
|
except OSError as e:
|
|
log.warn("Could not write to QEMU monitor: {}".format(e))
|
|
writer.close()
|
|
return result
|
|
if expected:
|
|
try:
|
|
while result is None:
|
|
line = yield from reader.readline()
|
|
if not line:
|
|
break
|
|
for expect in expected:
|
|
if expect in line:
|
|
result = line.decode("utf-8").strip()
|
|
break
|
|
except EOFError as e:
|
|
log.warn("Could not read from QEMU monitor: {}".format(e))
|
|
writer.close()
|
|
return result
|
|
|
|
@asyncio.coroutine
|
|
def close(self):
|
|
"""
|
|
Closes this QEMU VM.
|
|
"""
|
|
|
|
log.debug('QEMU VM "{name}" [{id}] is closing'.format(name=self._name, id=self._id))
|
|
yield from self.stop()
|
|
if self._console:
|
|
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
|
self._console = None
|
|
|
|
@asyncio.coroutine
|
|
def _get_vm_status(self):
|
|
"""
|
|
Returns this VM suspend status.
|
|
|
|
Status are extracted from:
|
|
https://github.com/qemu/qemu/blob/master/qapi-schema.json#L152
|
|
|
|
:returns: status (string)
|
|
"""
|
|
|
|
result = yield from self._control_vm("info status", [
|
|
b"debug", b"inmigrate", b"internal-error", b"io-error",
|
|
b"paused", b"postmigrate", b"prelaunch", b"finish-migrate",
|
|
b"restore-vm", b"running", b"save-vm", b"shutdown", b"suspended",
|
|
b"watchdog", b"guest-panicked"
|
|
])
|
|
if result is None:
|
|
return result
|
|
return result.rsplit(' ', 1)[1]
|
|
|
|
@asyncio.coroutine
|
|
def suspend(self):
|
|
"""
|
|
Suspends this QEMU VM.
|
|
"""
|
|
|
|
if self.is_running():
|
|
vm_status = yield from self._get_vm_status()
|
|
if vm_status is None:
|
|
raise QemuError("Suspending a QEMU VM is not supported")
|
|
elif vm_status == "running":
|
|
yield from self._control_vm("stop")
|
|
log.debug("QEMU VM has been suspended")
|
|
else:
|
|
log.info("QEMU VM is not running to be suspended, current status is {}".format(vm_status))
|
|
|
|
@asyncio.coroutine
|
|
def reload(self):
|
|
"""
|
|
Reloads this QEMU VM.
|
|
"""
|
|
|
|
yield from self._control_vm("system_reset")
|
|
log.debug("QEMU VM has been reset")
|
|
|
|
@asyncio.coroutine
|
|
def resume(self):
|
|
"""
|
|
Resumes this QEMU VM.
|
|
"""
|
|
|
|
vm_status = yield from self._get_vm_status()
|
|
if vm_status is None:
|
|
raise QemuError("Resuming a QEMU VM is not supported")
|
|
elif vm_status == "paused":
|
|
yield from self._control_vm("cont")
|
|
log.debug("QEMU VM has been resumed")
|
|
else:
|
|
log.info("QEMU VM is not paused to be resumed, current status is {}".format(vm_status))
|
|
|
|
@asyncio.coroutine
|
|
def adapter_add_nio_binding(self, adapter_number, nio):
|
|
"""
|
|
Adds a port NIO binding.
|
|
|
|
:param adapter_number: adapter number
|
|
:param nio: NIO instance to add to the adapter
|
|
"""
|
|
|
|
try:
|
|
adapter = self._ethernet_adapters[adapter_number]
|
|
except IndexError:
|
|
raise QemuError('Adapter {adapter_number} does not exist on QEMU VM "{name}"'.format(name=self._name,
|
|
adapter_number=adapter_number))
|
|
|
|
if self.is_running():
|
|
# dynamically configure an UDP tunnel on the QEMU VM adapter
|
|
if nio and isinstance(nio, NIOUDP):
|
|
if self._legacy_networking:
|
|
yield from self._control_vm("host_net_remove {} gns3-{}".format(adapter_number, adapter_number))
|
|
yield from self._control_vm("host_net_add udp vlan={},name=gns3-{},sport={},dport={},daddr={}".format(adapter_number,
|
|
adapter_number,
|
|
nio.lport,
|
|
nio.rport,
|
|
nio.rhost))
|
|
else:
|
|
# FIXME: does it work? very undocumented feature...
|
|
# Apparently there is a bug in Qemu...
|
|
# netdev_add [user|tap|socket|hubport|netmap],id=str[,prop=value][,...] -- add host network device
|
|
# netdev_del id -- remove host network device
|
|
yield from self._control_vm("netdev_del gns3-{}".format(adapter_number))
|
|
yield from self._control_vm("netdev_add socket,id=gns3-{},udp={}:{},localaddr={}:{}".format(adapter_number,
|
|
nio.rhost,
|
|
nio.rport,
|
|
self._host,
|
|
nio.lport))
|
|
|
|
adapter.add_nio(0, nio)
|
|
log.info('QEMU VM "{name}" [{id}]: {nio} added to adapter {adapter_number}'.format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
adapter_number=adapter_number))
|
|
|
|
@asyncio.coroutine
|
|
def adapter_remove_nio_binding(self, adapter_number):
|
|
"""
|
|
Removes a port NIO binding.
|
|
|
|
:param adapter_number: adapter number
|
|
|
|
:returns: NIO instance
|
|
"""
|
|
|
|
try:
|
|
adapter = self._ethernet_adapters[adapter_number]
|
|
except IndexError:
|
|
raise QemuError('Adapter {adapter_number} does not exist on QEMU VM "{name}"'.format(name=self._name,
|
|
adapter_number=adapter_number))
|
|
|
|
if self.is_running():
|
|
# dynamically disable the QEMU VM adapter
|
|
yield from self._control_vm("host_net_remove {} gns3-{}".format(adapter_number, adapter_number))
|
|
yield from self._control_vm("host_net_add user vlan={},name=gns3-{}".format(adapter_number, adapter_number))
|
|
|
|
nio = adapter.get_nio(0)
|
|
if isinstance(nio, NIOUDP):
|
|
self.manager.port_manager.release_udp_port(nio.lport, self._project)
|
|
adapter.remove_nio(0)
|
|
log.info('QEMU VM "{name}" [{id}]: {nio} removed from adapter {adapter_number}'.format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
adapter_number=adapter_number))
|
|
return nio
|
|
|
|
@property
|
|
def started(self):
|
|
"""
|
|
Returns either this QEMU VM has been started or not.
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
return self._started
|
|
|
|
def read_stdout(self):
|
|
"""
|
|
Reads the standard output of the QEMU process.
|
|
Only use when the process has been stopped or has crashed.
|
|
"""
|
|
|
|
output = ""
|
|
if self._stdout_file:
|
|
try:
|
|
with open(self._stdout_file, "rb") as file:
|
|
output = file.read().decode("utf-8", errors="replace")
|
|
except OSError as e:
|
|
log.warn("Could not read {}: {}".format(self._stdout_file, e))
|
|
return output
|
|
|
|
def is_running(self):
|
|
"""
|
|
Checks if the QEMU process is running
|
|
|
|
:returns: True or False
|
|
"""
|
|
|
|
if self._process:
|
|
if self._process.returncode is None:
|
|
return True
|
|
else:
|
|
self._process = None
|
|
return False
|
|
|
|
def command(self):
|
|
"""
|
|
Returns the QEMU command line.
|
|
|
|
:returns: QEMU command line (string)
|
|
"""
|
|
|
|
return " ".join(self._build_command())
|
|
|
|
def _serial_options(self):
|
|
|
|
if self._console:
|
|
return ["-serial", "telnet:{}:{},server,nowait".format(self._manager.port_manager.console_host, self._console)]
|
|
else:
|
|
return []
|
|
|
|
def _monitor_options(self):
|
|
|
|
if self._monitor:
|
|
return ["-monitor", "tcp:{}:{},server,nowait".format(self._monitor_host, self._monitor)]
|
|
else:
|
|
return []
|
|
|
|
@asyncio.coroutine
|
|
def _disk_options(self):
|
|
|
|
options = []
|
|
qemu_img_path = ""
|
|
qemu_path_dir = os.path.dirname(self.qemu_path)
|
|
try:
|
|
for f in os.listdir(qemu_path_dir):
|
|
if f.startswith("qemu-img"):
|
|
qemu_img_path = os.path.join(qemu_path_dir, f)
|
|
except OSError as e:
|
|
raise QemuError("Error while looking for qemu-img in {}: {}".format(qemu_path_dir, e))
|
|
|
|
if not qemu_img_path:
|
|
raise QemuError("Could not find qemu-img in {}".format(qemu_path_dir))
|
|
|
|
try:
|
|
if self._hda_disk_image:
|
|
if not os.path.isfile(self._hda_disk_image) or not os.path.exists(self._hda_disk_image):
|
|
if os.path.islink(self._hda_disk_image):
|
|
raise QemuError("hda disk image '{}' linked to '{}' is not accessible".format(self._hda_disk_image, os.path.realpath(self._hda_disk_image)))
|
|
else:
|
|
raise QemuError("hda disk image '{}' is not accessible".format(self._hda_disk_image))
|
|
hda_disk = os.path.join(self.working_dir, "hda_disk.qcow2")
|
|
if not os.path.exists(hda_disk):
|
|
process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
|
|
"backing_file={}".format(self._hda_disk_image),
|
|
"-f", "qcow2", hda_disk)
|
|
retcode = yield from process.wait()
|
|
log.info("{} returned with {}".format(qemu_img_path, retcode))
|
|
else:
|
|
# create a "FLASH" with 256MB if no disk image has been specified
|
|
hda_disk = os.path.join(self.working_dir, "flash.qcow2")
|
|
if not os.path.exists(hda_disk):
|
|
process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-f", "qcow2", hda_disk, "256M")
|
|
retcode = yield from process.wait()
|
|
log.info("{} returned with {}".format(qemu_img_path, retcode))
|
|
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
raise QemuError("Could not create hda disk image {}".format(e))
|
|
options.extend(["-hda", hda_disk])
|
|
|
|
if self._hdb_disk_image:
|
|
if not os.path.isfile(self._hdb_disk_image) or not os.path.exists(self._hdb_disk_image):
|
|
if os.path.islink(self._hdb_disk_image):
|
|
raise QemuError("hdb disk image '{}' linked to '{}' is not accessible".format(self._hdb_disk_image, os.path.realpath(self._hdb_disk_image)))
|
|
else:
|
|
raise QemuError("hdb disk image '{}' is not accessible".format(self._hdb_disk_image))
|
|
hdb_disk = os.path.join(self.working_dir, "hdb_disk.qcow2")
|
|
if not os.path.exists(hdb_disk):
|
|
try:
|
|
process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
|
|
"backing_file={}".format(self._hdb_disk_image),
|
|
"-f", "qcow2", hdb_disk)
|
|
retcode = yield from process.wait()
|
|
log.info("{} returned with {}".format(qemu_img_path, retcode))
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
raise QemuError("Could not create hdb disk image {}".format(e))
|
|
options.extend(["-hdb", hdb_disk])
|
|
|
|
if self._hdc_disk_image:
|
|
if not os.path.isfile(self._hdc_disk_image) or not os.path.exists(self._hdc_disk_image):
|
|
if os.path.islink(self._hdc_disk_image):
|
|
raise QemuError("hdc disk image '{}' linked to '{}' is not accessible".format(self._hdc_disk_image, os.path.realpath(self._hdc_disk_image)))
|
|
else:
|
|
raise QemuError("hdc disk image '{}' is not accessible".format(self._hdc_disk_image))
|
|
hdc_disk = os.path.join(self.working_dir, "hdc_disk.qcow2")
|
|
if not os.path.exists(hdc_disk):
|
|
try:
|
|
process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
|
|
"backing_file={}".format(self._hdc_disk_image),
|
|
"-f", "qcow2", hdc_disk)
|
|
retcode = yield from process.wait()
|
|
log.info("{} returned with {}".format(qemu_img_path, retcode))
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
raise QemuError("Could not create hdc disk image {}".format(e))
|
|
options.extend(["-hdc", hdc_disk])
|
|
|
|
if self._hdd_disk_image:
|
|
if not os.path.isfile(self._hdd_disk_image) or not os.path.exists(self._hdd_disk_image):
|
|
if os.path.islink(self._hdd_disk_image):
|
|
raise QemuError("hdd disk image '{}' linked to '{}' is not accessible".format(self._hdd_disk_image, os.path.realpath(self._hdd_disk_image)))
|
|
else:
|
|
raise QemuError("hdd disk image '{}' is not accessible".format(self._hdd_disk_image))
|
|
hdd_disk = os.path.join(self.working_dir, "hdd_disk.qcow2")
|
|
if not os.path.exists(hdd_disk):
|
|
try:
|
|
process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
|
|
"backing_file={}".format(self._hdd_disk_image),
|
|
"-f", "qcow2", hdd_disk)
|
|
retcode = yield from process.wait()
|
|
log.info("{} returned with {}".format(qemu_img_path, retcode))
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
raise QemuError("Could not create hdd disk image {}".format(e))
|
|
options.extend(["-hdd", hdd_disk])
|
|
|
|
return options
|
|
|
|
def _linux_boot_options(self):
|
|
|
|
options = []
|
|
if self._initrd:
|
|
if not os.path.isfile(self._initrd) or not os.path.exists(self._initrd):
|
|
if os.path.islink(self._initrd):
|
|
raise QemuError("initrd file '{}' linked to '{}' is not accessible".format(self._initrd, os.path.realpath(self._initrd)))
|
|
else:
|
|
raise QemuError("initrd file '{}' is not accessible".format(self._initrd))
|
|
options.extend(["-initrd", self._initrd])
|
|
if self._kernel_image:
|
|
if not os.path.isfile(self._kernel_image) or not os.path.exists(self._kernel_image):
|
|
if os.path.islink(self._kernel_image):
|
|
raise QemuError("kernel image '{}' linked to '{}' is not accessible".format(self._kernel_image, os.path.realpath(self._kernel_image)))
|
|
else:
|
|
raise QemuError("kernel image '{}' is not accessible".format(self._kernel_image))
|
|
options.extend(["-kernel", self._kernel_image])
|
|
if self._kernel_command_line:
|
|
options.extend(["-append", self._kernel_command_line])
|
|
|
|
return options
|
|
|
|
def _network_options(self):
|
|
|
|
network_options = []
|
|
network_options.extend(["-net", "none"]) # we do not want any user networking back-end if no adapter is connected.
|
|
for adapter_number, adapter in enumerate(self._ethernet_adapters):
|
|
# TODO: let users specify a base mac address
|
|
mac = "00:00:ab:%s:%s:%02x" % (self.id[-4:-2], self.id[-2:], adapter_number)
|
|
nio = adapter.get_nio(0)
|
|
if self._legacy_networking:
|
|
# legacy QEMU networking syntax (-net)
|
|
if nio:
|
|
network_options.extend(["-net", "nic,vlan={},macaddr={},model={}".format(adapter_number, mac, self._adapter_type)])
|
|
if isinstance(nio, NIOUDP):
|
|
network_options.extend(["-net", "udp,vlan={},name=gns3-{},sport={},dport={},daddr={}".format(adapter_number,
|
|
adapter_number,
|
|
nio.lport,
|
|
nio.rport,
|
|
nio.rhost)])
|
|
elif isinstance(nio, NIOTAP):
|
|
network_options.extend(["-net", "tap,name=gns3-{},ifname={}".format(adapter_number, nio.tap_device)])
|
|
elif isinstance(nio, NIONAT):
|
|
network_options.extend(["-net", "user,vlan={},name=gns3-{}".format(adapter_number, adapter_number)])
|
|
else:
|
|
network_options.extend(["-net", "nic,vlan={},macaddr={},model={}".format(adapter_number, mac, self._adapter_type)])
|
|
|
|
else:
|
|
# newer QEMU networking syntax
|
|
if nio:
|
|
network_options.extend(["-device", "{},mac={},netdev=gns3-{}".format(self._adapter_type, mac, adapter_number)])
|
|
if isinstance(nio, NIOUDP):
|
|
network_options.extend(["-netdev", "socket,id=gns3-{},udp={}:{},localaddr={}:{}".format(adapter_number,
|
|
nio.rhost,
|
|
nio.rport,
|
|
self._host,
|
|
nio.lport)])
|
|
elif isinstance(nio, NIOTAP):
|
|
network_options.extend(["-netdev", "tap,id=gns3-{},ifname={}".format(adapter_number, nio.tap_device)])
|
|
elif isinstance(nio, NIONAT):
|
|
network_options.extend(["-netdev", "user,id=gns3-{}".format(adapter_number)])
|
|
else:
|
|
network_options.extend(["-device", "{},mac={}".format(self._adapter_type, mac)])
|
|
|
|
return network_options
|
|
|
|
def _graphic(self):
|
|
"""
|
|
Adds the correct graphic options depending of the OS
|
|
"""
|
|
|
|
if sys.platform.startswith("win"):
|
|
return []
|
|
if len(os.environ.get("DISPLAY", "")) > 0:
|
|
return []
|
|
return ["-nographic"]
|
|
|
|
@asyncio.coroutine
|
|
def _build_command(self):
|
|
"""
|
|
Command to start the QEMU process.
|
|
(to be passed to subprocess.Popen())
|
|
"""
|
|
|
|
command = [self.qemu_path]
|
|
command.extend(["-name", self._name])
|
|
command.extend(["-m", str(self._ram)])
|
|
disk_options = yield from self._disk_options()
|
|
command.extend(disk_options)
|
|
command.extend(self._linux_boot_options())
|
|
command.extend(self._serial_options())
|
|
command.extend(self._monitor_options())
|
|
additional_options = self._options.strip()
|
|
if additional_options:
|
|
try:
|
|
command.extend(shlex.split(additional_options))
|
|
except ValueError as e:
|
|
QemuError("Invalid additional options: {} error {}".format(additional_options, e))
|
|
command.extend(self._network_options())
|
|
command.extend(self._graphic())
|
|
return command
|
|
|
|
def __json__(self):
|
|
answer = {
|
|
"project_id": self.project.id,
|
|
"vm_id": self.id
|
|
}
|
|
# Qemu has a long list of options. The JSON schema is the single source of information
|
|
for field in QEMU_OBJECT_SCHEMA["required"]:
|
|
if field not in answer:
|
|
answer[field] = getattr(self, field)
|
|
|
|
answer["hda_disk_image"] = self.manager.get_relative_image_path(self._hda_disk_image)
|
|
answer["hdb_disk_image"] = self.manager.get_relative_image_path(self._hdb_disk_image)
|
|
answer["hdc_disk_image"] = self.manager.get_relative_image_path(self._hdc_disk_image)
|
|
answer["hdd_disk_image"] = self.manager.get_relative_image_path(self._hdd_disk_image)
|
|
answer["initrd"] = self.manager.get_relative_image_path(self._initrd)
|
|
answer["kernel_image"] = self.manager.get_relative_image_path(self._kernel_image)
|
|
|
|
return answer
|