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# Test class for testing the boot process of a Linux kernel
#
# This work is licensed under the terms of the GNU GPL, version 2 or
# later. See the COPYING file in the top-level directory.
import os
from .testcase import QemuSystemTest
from .cmd import run_cmd, wait_for_console_pattern
from .utils import archive_extract
class LinuxKernelTest(QemuSystemTest):
KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
def wait_for_console_pattern(self, success_message, vm=None):
wait_for_console_pattern(self, success_message,
failure_message='Kernel panic - not syncing',
vm=vm)
def extract_from_deb(self, deb_path, path):
"""
Extracts a file from a deb package into the test workdir
:param deb_path: path to the deb archive
:param path: path within the deb archive of the file to be extracted
:returns: path of the extracted file
"""
cwd = os.getcwd()
os.chdir(self.workdir)
(stdout, stderr, ret) = run_cmd(['ar', 't', deb_path])
file_path = stdout.split()[2]
run_cmd(['ar', 'x', deb_path, file_path])
archive_extract(file_path, self.workdir)
os.chdir(cwd)
# Return complete path to extracted file. Because callers to
# extract_from_deb() specify 'path' with a leading slash, it is
# necessary to use os.path.relpath() as otherwise os.path.join()
# interprets it as an absolute path and drops the self.workdir part.
return os.path.normpath(os.path.join(self.workdir,
os.path.relpath(path, '/')))
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