1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
|
#
# VM testing base class
#
# Copyright 2017-2019 Red Hat Inc.
#
# Authors:
# Fam Zheng <famz@redhat.com>
# Gerd Hoffmann <kraxel@redhat.com>
#
# This code is licensed under the GPL version 2 or later. See
# the COPYING file in the top-level directory.
#
import os
import re
import sys
import socket
import logging
import time
import datetime
import subprocess
import hashlib
import argparse
import atexit
import tempfile
import shutil
import multiprocessing
import traceback
import shlex
import json
from qemu.machine import QEMUMachine
from qemu.utils import get_info_usernet_hostfwd_port, kvm_available
SSH_KEY_FILE = os.path.join(os.path.dirname(__file__),
"..", "keys", "id_rsa")
SSH_PUB_KEY_FILE = os.path.join(os.path.dirname(__file__),
"..", "keys", "id_rsa.pub")
# This is the standard configuration.
# Any or all of these can be overridden by
# passing in a config argument to the VM constructor.
DEFAULT_CONFIG = {
'cpu' : "max",
'machine' : 'pc',
'guest_user' : "qemu",
'guest_pass' : "qemupass",
'root_user' : "root",
'root_pass' : "qemupass",
'ssh_key_file' : SSH_KEY_FILE,
'ssh_pub_key_file': SSH_PUB_KEY_FILE,
'memory' : "4G",
'extra_args' : [],
'qemu_args' : "",
'dns' : "",
'ssh_port' : 0,
'install_cmds' : "",
'boot_dev_type' : "block",
'ssh_timeout' : 1,
}
BOOT_DEVICE = {
'block' : "-drive file={},if=none,id=drive0,cache=writeback "\
"-device virtio-blk,drive=drive0,bootindex=0",
'scsi' : "-device virtio-scsi-device,id=scsi "\
"-drive file={},format=raw,if=none,id=hd0 "\
"-device scsi-hd,drive=hd0,bootindex=0",
}
class BaseVM(object):
envvars = [
"https_proxy",
"http_proxy",
"ftp_proxy",
"no_proxy",
]
# The script to run in the guest that builds QEMU
BUILD_SCRIPT = ""
# The guest name, to be overridden by subclasses
name = "#base"
# The guest architecture, to be overridden by subclasses
arch = "#arch"
# command to halt the guest, can be overridden by subclasses
poweroff = "poweroff"
# Time to wait for shutdown to finish.
shutdown_timeout_default = 30
# enable IPv6 networking
ipv6 = True
# This is the timeout on the wait for console bytes.
socket_timeout = 120
# Scale up some timeouts under TCG.
# 4 is arbitrary, but greater than 2,
# since we found we need to wait more than twice as long.
tcg_timeout_multiplier = 4
def __init__(self, args, config=None):
self._guest = None
self._genisoimage = args.genisoimage
self._build_path = args.build_path
self._efi_aarch64 = args.efi_aarch64
self._source_path = args.source_path
# Allow input config to override defaults.
self._config = DEFAULT_CONFIG.copy()
# 1GB per core, minimum of 4. This is only a default.
mem = max(4, args.jobs)
self._config['memory'] = f"{mem}G"
if config != None:
self._config.update(config)
self.validate_ssh_keys()
self._tmpdir = os.path.realpath(tempfile.mkdtemp(prefix="vm-test-",
suffix=".tmp",
dir="."))
atexit.register(shutil.rmtree, self._tmpdir)
# Copy the key files to a temporary directory.
# Also chmod the key file to agree with ssh requirements.
self._config['ssh_key'] = \
open(self._config['ssh_key_file']).read().rstrip()
self._config['ssh_pub_key'] = \
open(self._config['ssh_pub_key_file']).read().rstrip()
self._ssh_tmp_key_file = os.path.join(self._tmpdir, "id_rsa")
open(self._ssh_tmp_key_file, "w").write(self._config['ssh_key'])
subprocess.check_call(["chmod", "600", self._ssh_tmp_key_file])
self._ssh_tmp_pub_key_file = os.path.join(self._tmpdir, "id_rsa.pub")
open(self._ssh_tmp_pub_key_file,
"w").write(self._config['ssh_pub_key'])
self.debug = args.debug
self._console_log_path = None
if args.log_console:
self._console_log_path = \
os.path.join(os.path.expanduser("~/.cache/qemu-vm"),
"{}.install.log".format(self.name))
self._stderr = sys.stderr
self._devnull = open(os.devnull, "w")
if self.debug:
self._stdout = sys.stdout
else:
self._stdout = self._devnull
netdev = "user,id=vnet,hostfwd=:127.0.0.1:{}-:22"
self._args = [ \
"-nodefaults", "-m", self._config['memory'],
"-cpu", self._config['cpu'],
"-netdev",
netdev.format(self._config['ssh_port']) +
(",ipv6=no" if not self.ipv6 else "") +
(",dns=" + self._config['dns'] if self._config['dns'] else ""),
"-device", "virtio-net-pci,netdev=vnet",
"-vnc", "127.0.0.1:0,to=20"]
if args.jobs and args.jobs > 1:
self._args += ["-smp", "%d" % args.jobs]
if kvm_available(self.arch):
self._shutdown_timeout = self.shutdown_timeout_default
self._args += ["-enable-kvm"]
else:
logging.info("KVM not available, not using -enable-kvm")
self._shutdown_timeout = \
self.shutdown_timeout_default * self.tcg_timeout_multiplier
self._data_args = []
if self._config['qemu_args'] != None:
qemu_args = self._config['qemu_args']
qemu_args = qemu_args.replace('\n',' ').replace('\r','')
# shlex groups quoted arguments together
# we need this to keep the quoted args together for when
# the QEMU command is issued later.
args = shlex.split(qemu_args)
self._config['extra_args'] = []
for arg in args:
if arg:
# Preserve quotes around arguments.
# shlex above takes them out, so add them in.
if " " in arg:
arg = '"{}"'.format(arg)
self._config['extra_args'].append(arg)
def validate_ssh_keys(self):
"""Check to see if the ssh key files exist."""
if 'ssh_key_file' not in self._config or\
not os.path.exists(self._config['ssh_key_file']):
raise Exception("ssh key file not found.")
if 'ssh_pub_key_file' not in self._config or\
not os.path.exists(self._config['ssh_pub_key_file']):
raise Exception("ssh pub key file not found.")
def wait_boot(self, wait_string=None):
"""Wait for the standard string we expect
on completion of a normal boot.
The user can also choose to override with an
alternate string to wait for."""
if wait_string is None:
if self.login_prompt is None:
raise Exception("self.login_prompt not defined")
wait_string = self.login_prompt
# Intentionally bump up the default timeout under TCG,
# since the console wait below takes longer.
timeout = self.socket_timeout
if not kvm_available(self.arch):
timeout *= 8
self.console_init(timeout=timeout)
self.console_wait(wait_string)
def _download_with_cache(self, url, sha256sum=None, sha512sum=None):
def check_sha256sum(fname):
if not sha256sum:
return True
checksum = subprocess.check_output(["sha256sum", fname]).split()[0]
return sha256sum == checksum.decode("utf-8")
def check_sha512sum(fname):
if not sha512sum:
return True
checksum = subprocess.check_output(["sha512sum", fname]).split()[0]
return sha512sum == checksum.decode("utf-8")
cache_dir = os.path.expanduser("~/.cache/qemu-vm/download")
if not os.path.exists(cache_dir):
os.makedirs(cache_dir)
fname = os.path.join(cache_dir,
hashlib.sha1(url.encode("utf-8")).hexdigest())
if os.path.exists(fname) and check_sha256sum(fname) and check_sha512sum(fname):
return fname
logging.debug("Downloading %s to %s...", url, fname)
subprocess.check_call(["wget", "-c", url, "-O", fname + ".download"],
stdout=self._stdout, stderr=self._stderr)
os.rename(fname + ".download", fname)
return fname
def _ssh_do(self, user, cmd, check):
ssh_cmd = ["ssh",
"-t",
"-o", "StrictHostKeyChecking=no",
"-o", "UserKnownHostsFile=" + os.devnull,
"-o",
"ConnectTimeout={}".format(self._config["ssh_timeout"]),
"-p", str(self.ssh_port), "-i", self._ssh_tmp_key_file,
"-o", "IdentitiesOnly=yes"]
# If not in debug mode, set ssh to quiet mode to
# avoid printing the results of commands.
if not self.debug:
ssh_cmd.append("-q")
for var in self.envvars:
ssh_cmd += ['-o', "SendEnv=%s" % var ]
assert not isinstance(cmd, str)
ssh_cmd += ["%s@127.0.0.1" % user] + list(cmd)
logging.debug("ssh_cmd: %s", " ".join(ssh_cmd))
r = subprocess.call(ssh_cmd)
if check and r != 0:
raise Exception("SSH command failed: %s" % cmd)
return r
def ssh(self, *cmd):
return self._ssh_do(self._config["guest_user"], cmd, False)
def ssh_root(self, *cmd):
return self._ssh_do(self._config["root_user"], cmd, False)
def ssh_check(self, *cmd):
self._ssh_do(self._config["guest_user"], cmd, True)
def ssh_root_check(self, *cmd):
self._ssh_do(self._config["root_user"], cmd, True)
def build_image(self, img):
raise NotImplementedError
def exec_qemu_img(self, *args):
cmd = [os.environ.get("QEMU_IMG", "qemu-img")]
cmd.extend(list(args))
subprocess.check_call(cmd)
def add_source_dir(self, src_dir):
name = "data-" + hashlib.sha1(src_dir.encode("utf-8")).hexdigest()[:5]
tarfile = os.path.join(self._tmpdir, name + ".tar")
logging.debug("Creating archive %s for src_dir dir: %s", tarfile, src_dir)
subprocess.check_call(["./scripts/archive-source.sh", tarfile],
cwd=src_dir, stdin=self._devnull,
stdout=self._stdout, stderr=self._stderr)
self._data_args += ["-drive",
"file=%s,if=none,id=%s,cache=writeback,format=raw" % \
(tarfile, name),
"-device",
"virtio-blk,drive=%s,serial=%s,bootindex=1" % (name, name)]
def boot(self, img, extra_args=[]):
boot_dev = BOOT_DEVICE[self._config['boot_dev_type']]
boot_params = boot_dev.format(img)
args = self._args + boot_params.split(' ')
args += self._data_args + extra_args + self._config['extra_args']
logging.debug("QEMU args: %s", " ".join(args))
qemu_path = get_qemu_path(self.arch, self._build_path)
# Since console_log_path is only set when the user provides the
# log_console option, we will set drain_console=True so the
# console is always drained.
guest = QEMUMachine(binary=qemu_path, args=args,
console_log=self._console_log_path,
drain_console=True)
guest.set_machine(self._config['machine'])
guest.set_console()
try:
guest.launch()
except:
logging.error("Failed to launch QEMU, command line:")
logging.error(" ".join([qemu_path] + args))
logging.error("Log:")
logging.error(guest.get_log())
logging.error("QEMU version >= 2.10 is required")
raise
atexit.register(self.shutdown)
self._guest = guest
# Init console so we can start consuming the chars.
self.console_init()
usernet_info = guest.qmp("human-monitor-command",
command_line="info usernet").get("return")
self.ssh_port = get_info_usernet_hostfwd_port(usernet_info)
if not self.ssh_port:
raise Exception("Cannot find ssh port from 'info usernet':\n%s" % \
usernet_info)
def console_init(self, timeout = None):
if timeout == None:
timeout = self.socket_timeout
vm = self._guest
vm.console_socket.settimeout(timeout)
self.console_raw_path = os.path.join(vm._temp_dir,
vm._name + "-console.raw")
self.console_raw_file = open(self.console_raw_path, 'wb')
def console_log(self, text):
for line in re.split("[\r\n]", text):
# filter out terminal escape sequences
line = re.sub("\x1b\[[0-9;?]*[a-zA-Z]", "", line)
line = re.sub("\x1b\([0-9;?]*[a-zA-Z]", "", line)
# replace unprintable chars
line = re.sub("\x1b", "<esc>", line)
line = re.sub("[\x00-\x1f]", ".", line)
line = re.sub("[\x80-\xff]", ".", line)
if line == "":
continue
# log console line
sys.stderr.write("con recv: %s\n" % line)
def console_wait(self, expect, expectalt = None):
vm = self._guest
output = ""
while True:
try:
chars = vm.console_socket.recv(1)
if self.console_raw_file:
self.console_raw_file.write(chars)
self.console_raw_file.flush()
except socket.timeout:
sys.stderr.write("console: *** read timeout ***\n")
sys.stderr.write("console: waiting for: '%s'\n" % expect)
if not expectalt is None:
sys.stderr.write("console: waiting for: '%s' (alt)\n" % expectalt)
sys.stderr.write("console: line buffer:\n")
sys.stderr.write("\n")
self.console_log(output.rstrip())
sys.stderr.write("\n")
raise
output += chars.decode("latin1")
if expect in output:
break
if not expectalt is None and expectalt in output:
break
if "\r" in output or "\n" in output:
lines = re.split("[\r\n]", output)
output = lines.pop()
if self.debug:
self.console_log("\n".join(lines))
if self.debug:
self.console_log(output)
if not expectalt is None and expectalt in output:
return False
return True
def console_consume(self):
vm = self._guest
output = ""
vm.console_socket.setblocking(0)
while True:
try:
chars = vm.console_socket.recv(1)
except:
break
output += chars.decode("latin1")
if "\r" in output or "\n" in output:
lines = re.split("[\r\n]", output)
output = lines.pop()
if self.debug:
self.console_log("\n".join(lines))
if self.debug:
self.console_log(output)
vm.console_socket.setblocking(1)
def console_send(self, command):
vm = self._guest
if self.debug:
logline = re.sub("\n", "<enter>", command)
logline = re.sub("[\x00-\x1f]", ".", logline)
sys.stderr.write("con send: %s\n" % logline)
for char in list(command):
vm.console_socket.send(char.encode("utf-8"))
time.sleep(0.01)
def console_wait_send(self, wait, command):
self.console_wait(wait)
self.console_send(command)
def console_ssh_init(self, prompt, user, pw):
sshkey_cmd = "echo '%s' > .ssh/authorized_keys\n" \
% self._config['ssh_pub_key'].rstrip()
self.console_wait_send("login:", "%s\n" % user)
self.console_wait_send("Password:", "%s\n" % pw)
self.console_wait_send(prompt, "mkdir .ssh\n")
self.console_wait_send(prompt, sshkey_cmd)
self.console_wait_send(prompt, "chmod 755 .ssh\n")
self.console_wait_send(prompt, "chmod 644 .ssh/authorized_keys\n")
def console_sshd_config(self, prompt):
self.console_wait(prompt)
self.console_send("echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config\n")
for var in self.envvars:
self.console_wait(prompt)
self.console_send("echo 'AcceptEnv %s' >> /etc/ssh/sshd_config\n" % var)
def print_step(self, text):
sys.stderr.write("### %s ...\n" % text)
def wait_ssh(self, wait_root=False, seconds=300, cmd="exit 0"):
# Allow more time for VM to boot under TCG.
if not kvm_available(self.arch):
seconds *= self.tcg_timeout_multiplier
starttime = datetime.datetime.now()
endtime = starttime + datetime.timedelta(seconds=seconds)
cmd_success = False
while datetime.datetime.now() < endtime:
if wait_root and self.ssh_root(cmd) == 0:
cmd_success = True
break
elif self.ssh(cmd) == 0:
cmd_success = True
break
seconds = (endtime - datetime.datetime.now()).total_seconds()
logging.debug("%ds before timeout", seconds)
time.sleep(1)
if not cmd_success:
raise Exception("Timeout while waiting for guest ssh")
def shutdown(self):
self._guest.shutdown(timeout=self._shutdown_timeout)
def wait(self):
self._guest.wait(timeout=self._shutdown_timeout)
def graceful_shutdown(self):
self.ssh_root(self.poweroff)
self._guest.wait(timeout=self._shutdown_timeout)
def qmp(self, *args, **kwargs):
return self._guest.qmp(*args, **kwargs)
def gen_cloud_init_iso(self):
cidir = self._tmpdir
mdata = open(os.path.join(cidir, "meta-data"), "w")
name = self.name.replace(".","-")
mdata.writelines(["instance-id: {}-vm-0\n".format(name),
"local-hostname: {}-guest\n".format(name)])
mdata.close()
udata = open(os.path.join(cidir, "user-data"), "w")
print("guest user:pw {}:{}".format(self._config['guest_user'],
self._config['guest_pass']))
udata.writelines(["#cloud-config\n",
"chpasswd:\n",
" list: |\n",
" root:%s\n" % self._config['root_pass'],
" %s:%s\n" % (self._config['guest_user'],
self._config['guest_pass']),
" expire: False\n",
"users:\n",
" - name: %s\n" % self._config['guest_user'],
" sudo: ALL=(ALL) NOPASSWD:ALL\n",
" ssh-authorized-keys:\n",
" - %s\n" % self._config['ssh_pub_key'],
" - name: root\n",
" ssh-authorized-keys:\n",
" - %s\n" % self._config['ssh_pub_key'],
"locale: en_US.UTF-8\n"])
proxy = os.environ.get("http_proxy")
if not proxy is None:
udata.writelines(["apt:\n",
" proxy: %s" % proxy])
udata.close()
subprocess.check_call([self._genisoimage, "-output", "cloud-init.iso",
"-volid", "cidata", "-joliet", "-rock",
"user-data", "meta-data"],
cwd=cidir,
stdin=self._devnull, stdout=self._stdout,
stderr=self._stdout)
return os.path.join(cidir, "cloud-init.iso")
def get_qemu_packages_from_lcitool_json(self, json_path=None):
"""Parse a lcitool variables json file and return the PKGS list."""
if json_path is None:
json_path = os.path.join(
os.path.dirname(__file__), "generated", self.name + ".json"
)
with open(json_path, "r") as fh:
return json.load(fh)["pkgs"]
def get_qemu_path(arch, build_path=None):
"""Fetch the path to the qemu binary."""
# If QEMU environment variable set, it takes precedence
if "QEMU" in os.environ:
qemu_path = os.environ["QEMU"]
elif build_path:
qemu_path = os.path.join(build_path, arch + "-softmmu")
qemu_path = os.path.join(qemu_path, "qemu-system-" + arch)
else:
# Default is to use system path for qemu.
qemu_path = "qemu-system-" + arch
return qemu_path
def get_qemu_version(qemu_path):
"""Get the version number from the current QEMU,
and return the major number."""
output = subprocess.check_output([qemu_path, '--version'])
version_line = output.decode("utf-8")
version_num = re.split(' |\(', version_line)[3].split('.')[0]
return int(version_num)
def parse_config(config, args):
""" Parse yaml config and populate our config structure.
The yaml config allows the user to override the
defaults for VM parameters. In many cases these
defaults can be overridden without rebuilding the VM."""
if args.config:
config_file = args.config
elif 'QEMU_CONFIG' in os.environ:
config_file = os.environ['QEMU_CONFIG']
else:
return config
if not os.path.exists(config_file):
raise Exception("config file {} does not exist".format(config_file))
# We gracefully handle importing the yaml module
# since it might not be installed.
# If we are here it means the user supplied a .yml file,
# so if the yaml module is not installed we will exit with error.
try:
import yaml
except ImportError:
print("The python3-yaml package is needed "\
"to support config.yaml files")
# Instead of raising an exception we exit to avoid
# a raft of messy (expected) errors to stdout.
exit(1)
with open(config_file) as f:
yaml_dict = yaml.safe_load(f)
if 'qemu-conf' in yaml_dict:
config.update(yaml_dict['qemu-conf'])
else:
raise Exception("config file {} is not valid"\
" missing qemu-conf".format(config_file))
return config
def parse_args(vmcls):
def get_default_jobs():
if multiprocessing.cpu_count() > 1:
if kvm_available(vmcls.arch):
return multiprocessing.cpu_count() // 2
elif os.uname().machine == "x86_64" and \
vmcls.arch in ["aarch64", "x86_64", "i386"]:
# MTTCG is available on these arches and we can allow
# more cores. but only up to a reasonable limit. User
# can always override these limits with --jobs.
return min(multiprocessing.cpu_count() // 2, 8)
return 1
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="Utility for provisioning VMs and running builds",
epilog="""Remaining arguments are passed to the command.
Exit codes: 0 = success, 1 = command line error,
2 = environment initialization failed,
3 = test command failed""")
parser.add_argument("--debug", "-D", action="store_true",
help="enable debug output")
parser.add_argument("--image", "-i", default="%s.img" % vmcls.name,
help="image file name")
parser.add_argument("--force", "-f", action="store_true",
help="force build image even if image exists")
parser.add_argument("--jobs", type=int, default=get_default_jobs(),
help="number of virtual CPUs")
parser.add_argument("--verbose", "-V", action="store_true",
help="Pass V=1 to builds within the guest")
parser.add_argument("--build-image", "-b", action="store_true",
help="build image")
parser.add_argument("--build-qemu",
help="build QEMU from source in guest")
parser.add_argument("--build-target",
help="QEMU build target", default="check")
parser.add_argument("--build-path", default=None,
help="Path of build directory, "\
"for using build tree QEMU binary. ")
parser.add_argument("--source-path", default=None,
help="Path of source directory, "\
"for finding additional files. ")
parser.add_argument("--interactive", "-I", action="store_true",
help="Interactively run command")
parser.add_argument("--snapshot", "-s", action="store_true",
help="run tests with a snapshot")
parser.add_argument("--genisoimage", default="genisoimage",
help="iso imaging tool")
parser.add_argument("--config", "-c", default=None,
help="Provide config yaml for configuration. "\
"See config_example.yaml for example.")
parser.add_argument("--efi-aarch64",
default="/usr/share/qemu-efi-aarch64/QEMU_EFI.fd",
help="Path to efi image for aarch64 VMs.")
parser.add_argument("--log-console", action="store_true",
help="Log console to file.")
parser.add_argument("commands", nargs="*", help="""Remaining
commands after -- are passed to command inside the VM""")
return parser.parse_args()
def main(vmcls, config=None):
try:
if config == None:
config = DEFAULT_CONFIG
args = parse_args(vmcls)
if not args.commands and not args.build_qemu and not args.build_image:
print("Nothing to do?")
return 1
config = parse_config(config, args)
logging.basicConfig(level=(logging.DEBUG if args.debug
else logging.WARN))
vm = vmcls(args, config=config)
if args.build_image:
if os.path.exists(args.image) and not args.force:
sys.stderr.writelines(["Image file exists: %s\n" % args.image,
"Use --force option to overwrite\n"])
return 1
return vm.build_image(args.image)
if args.build_qemu:
vm.add_source_dir(args.build_qemu)
cmd = [vm.BUILD_SCRIPT.format(
configure_opts = " ".join(args.commands),
jobs=int(args.jobs),
target=args.build_target,
verbose = "V=1" if args.verbose else "")]
else:
cmd = args.commands
img = args.image
if args.snapshot:
img += ",snapshot=on"
vm.boot(img)
vm.wait_ssh()
except Exception as e:
if isinstance(e, SystemExit) and e.code == 0:
return 0
sys.stderr.write("Failed to prepare guest environment\n")
traceback.print_exc()
return 2
exitcode = 0
if vm.ssh(*cmd) != 0:
exitcode = 3
if args.interactive:
vm.ssh()
if not args.snapshot:
vm.graceful_shutdown()
return exitcode
|