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python/machine.py: Don't modify state in _base_args() 

Don't append to the _remove_files list during _base_args; instead do so
during _launch. Rework _base_args as a @property to help facilitate
this impression.

This has the additional benefit of making the type of _console_address
easier to analyze statically.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 20201006235817.3280413-5-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
John Snow 2020-10-06 19:58:01 -04:00
parent c5e61a6da8
commit 652809dfa6
2 changed files with 14 additions and 10 deletions
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17
python/qemu/machine.py
View File

@ -25,7 +25,7 @@ import signal
import subprocess
import tempfile
from types import TracebackType
from typing import Optional, Type
from typing import List, Optional, Type
from . import console_socket, qmp
from .qmp import SocketAddrT
@ -137,7 +137,9 @@ class QEMUMachine:
self._console_index = 0
self._console_set = False
self._console_device_type = None
self._console_address = None
self._console_address = os.path.join(
self._sock_dir, f"{self._name}-console.sock"
)
self._console_socket = None
self._remove_files = []
self._user_killed = False
@ -253,7 +255,8 @@ class QEMUMachine:
with open(self._qemu_log_path, "r") as iolog:
self._iolog = iolog.read()
def _base_args(self):
@property
def _base_args(self) -> List[str]:
args = ['-display', 'none', '-vga', 'none']
if self._qmp_set:
@ -271,9 +274,6 @@ class QEMUMachine:
for _ in range(self._console_index):
args.extend(['-serial', 'null'])
if self._console_set:
self._console_address = os.path.join(self._sock_dir,
self._name + "-console.sock")
self._remove_files.append(self._console_address)
chardev = ('socket,id=console,path=%s,server,nowait' %
self._console_address)
args.extend(['-chardev', chardev])
@ -289,6 +289,9 @@ class QEMUMachine:
self._qemu_log_path = os.path.join(self._temp_dir, self._name + ".log")
self._qemu_log_file = open(self._qemu_log_path, 'wb')
if self._console_set:
self._remove_files.append(self._console_address)
if self._qmp_set:
if self._remove_monitor_sockfile:
assert isinstance(self._monitor_address, str)
@ -374,7 +377,7 @@ class QEMUMachine:
devnull = open(os.path.devnull, 'rb')
self._pre_launch()
self._qemu_full_args = (self._wrapper + [self._binary] +
self._base_args() + self._args)
self._base_args + self._args)
LOG.debug('VM launch command: %r', ' '.join(self._qemu_full_args))
self._popen = subprocess.Popen(self._qemu_full_args,
stdin=devnull,

7
python/qemu/qtest.py
View File

@ -19,7 +19,7 @@ subclass of QEMUMachine, respectively.
import os
import socket
from typing import Optional, TextIO
from typing import List, Optional, TextIO
from .machine import QEMUMachine
@ -111,8 +111,9 @@ class QEMUQtestMachine(QEMUMachine):
self._qtest = None
self._qtest_path = os.path.join(sock_dir, name + "-qtest.sock")
def _base_args(self):
args = super()._base_args()
@property
def _base_args(self) -> List[str]:
args = super()._base_args
args.extend(['-qtest', 'unix:path=' + self._qtest_path,
'-accel', 'qtest'])
return args