xref: /qemu/tests/functional/test_linux_initrd.py (revision 70ce076fa6dff60585c229a4b641b13e64bf03cf) 
1#!/usr/bin/env python3
2#
3# Linux initrd integration test.
4#
5# Copyright (c) 2018 Red Hat, Inc.
6#
7# Author:
8#  Wainer dos Santos Moschetta <wainersm@redhat.com>
9#
10# This work is licensed under the terms of the GNU GPL, version 2 or
11# later.  See the COPYING file in the top-level directory.
12
13import logging
14import tempfile
15
16from qemu_test import QemuSystemTest, Asset, skipFlakyTest
17
18
19class LinuxInitrd(QemuSystemTest):
20    """
21    Checks QEMU evaluates correctly the initrd file passed as -initrd option.
22    """
23
24    timeout = 300
25
26    ASSET_F18_KERNEL = Asset(
27        ('https://archives.fedoraproject.org/pub/archive/fedora/linux/'
28         'releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz'),
29        '1a27cb42559ce29237ac186699d063556ad69c8349d732bb1bd8d614e5a8cc2e')
30
31    ASSET_F28_KERNEL = Asset(
32        ('https://archives.fedoraproject.org/pub/archive/fedora/linux/'
33         'releases/28/Everything/x86_64/os/images/pxeboot/vmlinuz'),
34        'd05909c9d4a742a6fcc84dcc0361009e4611769619cc187a07107579a035f24e')
35
36    def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
37        """
38        Pretends to boot QEMU with an initrd file with size of 2GiB
39        and expect it exits with error message.
40        Fedora-18 shipped with linux-3.6 which have not supported xloadflags
41        cannot support more than 2GiB initrd.
42        """
43        self.set_machine('pc')
44        kernel_path = self.ASSET_F18_KERNEL.fetch()
45        max_size = 2 * (1024 ** 3) - 1
46
47        with tempfile.NamedTemporaryFile() as initrd:
48            initrd.seek(max_size)
49            initrd.write(b'\0')
50            initrd.flush()
51            self.vm.add_args('-kernel', kernel_path, '-initrd', initrd.name,
52                             '-m', '4096')
53            self.vm.set_qmp_monitor(enabled=False)
54            self.vm.launch()
55            self.vm.wait()
56            self.assertEqual(self.vm.exitcode(), 1)
57            expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
58                max_size + 1)
59            self.assertRegex(self.vm.get_log(), expected_msg)
60
61    # XXX file tracking bug
62    @skipFlakyTest(bug_url=None)
63    def test_with_2gib_file_should_work_with_linux_v4_16(self):
64        """
65        QEMU has supported up to 4 GiB initrd for recent kernel
66        Expect guest can reach 'Unpacking initramfs...'
67        """
68        self.set_machine('pc')
69        kernel_path = self.ASSET_F28_KERNEL.fetch()
70        max_size = 2 * (1024 ** 3) + 1
71
72        with tempfile.NamedTemporaryFile() as initrd:
73            initrd.seek(max_size)
74            initrd.write(b'\0')
75            initrd.flush()
76
77            self.vm.set_console()
78            kernel_command_line = 'console=ttyS0'
79            self.vm.add_args('-kernel', kernel_path,
80                             '-append', kernel_command_line,
81                             '-initrd', initrd.name,
82                             '-m', '5120')
83            self.vm.launch()
84            console = self.vm.console_socket.makefile()
85            console_logger = logging.getLogger('console')
86            while True:
87                msg = console.readline()
88                console_logger.debug(msg.strip())
89                if 'Unpacking initramfs...' in msg:
90                    break
91                if 'Kernel panic - not syncing' in msg:
92                    self.fail("Kernel panic reached")
93
94if __name__ == '__main__':
95    QemuSystemTest.main()
96