Fix UTF-16 result handling for efibootmgr
The tl;dr is that UEFI NVRAM is in encoded
in UTF-16, and when we run the efibootmgr command,
we can get unicode characters back.
Except we previously were forcing everything to be
treated as UTF-8 due to the way oslo.concurrency's
processutils module works.
This could be observed with UTF character 0x00FF
which raises up a nice exception when we try to
decode it.
Anyhow! while fixing handling of this, we discovered
we could get basically the cruft out of the NVRAM,
by getting what was most likey a truncated string
out of our own test VMs. As such, we need to also
permit decoding to be tollerant of failures.
This could be binary data or as simple as flipped
bits which get interpretted invalid characters.
As such, we have introduced such data into one of our
tests involving UEFI record de-duplication.
Closes-Bug: 2015602
Change-Id: I006535bf124379ed65443c7b283bc99ecc95568b
(cherry picked from commit 76accfb880)
This commit is contained in:
Julia Kreger
parent
fa7e33b0b4
commit
09c3c41219
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@ -275,8 +275,15 @@ def get_boot_records():
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:return: an iterator yielding pairs (boot number, boot record).
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"""
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efi_output = utils.execute('efibootmgr', '-v')
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for line in efi_output[0].split('\n'):
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# Invokes binary=True so we get a bytestream back.
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efi_output = utils.execute('efibootmgr', '-v', binary=True)
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# Bytes must be decoded before regex can be run and
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# matching to work as intended.
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# Also ignore errors on decoding, as we can basically get
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# garbage out of the nvram record, this way we don't fail
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# hard on unrelated records.
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cmd_output = efi_output[0].decode('utf-16', errors='ignore')
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for line in cmd_output.split('\n'):
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match = _ENTRY_LABEL.match(line)
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if match is not None:
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yield (match[1], match[2])
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@ -293,7 +300,7 @@ def add_boot_record(device, efi_partition, loader, label):
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# https://linux.die.net/man/8/efibootmgr
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utils.execute('efibootmgr', '-v', '-c', '-d', device,
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'-p', str(efi_partition), '-w', '-L', label,
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'-l', loader)
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'-l', loader, binary=True)
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def remove_boot_record(boot_num):
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@ -301,7 +308,7 @@ def remove_boot_record(boot_num):
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:param boot_num: the number of the boot record
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"""
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utils.execute('efibootmgr', '-b', boot_num, '-B')
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utils.execute('efibootmgr', '-b', boot_num, '-B', binary=True)
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def _run_efibootmgr(valid_efi_bootloaders, device, efi_partition,
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@ -32,6 +32,9 @@ from ironic_python_agent.tests.unit import base
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from ironic_python_agent.tests.unit.samples import hardware_samples as hws
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EFI_RESULT = ''.encode('utf-16')
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@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
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@mock.patch.object(ilib_utils, 'execute', autospec=True)
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@mock.patch.object(tempfile, 'mkdtemp', lambda *_: '/tmp/fake-dir')
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@ -231,7 +234,7 @@ class TestImageExtension(base.IronicAgentTest):
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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('', ''), ('', ''),
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(EFI_RESULT, ''), (EFI_RESULT, ''),
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('', ''), ('', '')])
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expected = [mock.call('efibootmgr', '--version'),
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@ -240,11 +243,11 @@ class TestImageExtension(base.IronicAgentTest):
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mock.call('udevadm', 'settle'),
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mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -279,7 +282,7 @@ class TestImageExtension(base.IronicAgentTest):
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mock_efi_bl.return_value = ['EFI/BOOT/BOOTX64.EFI']
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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('', ''), ('', ''),
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(EFI_RESULT, ''), (EFI_RESULT, ''),
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('', ''), ('', '')])
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expected = [mock.call('efibootmgr', '--version'),
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@ -288,11 +291,11 @@ class TestImageExtension(base.IronicAgentTest):
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mock.call('udevadm', 'settle'),
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mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -333,10 +336,11 @@ Boot0000 ironic1 HD(1,GPT,4f3c6294-bf9b-4208-9808-be45dfc34b5c)File(\EFI\Boot\BO
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Boot0001 ironic2 HD(1,GPT,4f3c6294-bf9b-4208-9808-111111111112)File(\EFI\Boot\BOOTX64.EFI)
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Boot0002 VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
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""" # noqa This is a giant literal string for testing.
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stdout_msg = stdout_msg.encode('utf-16')
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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(stdout_msg, ''), ('', ''),
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('', ''), ('', ''),
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(stdout_msg, ''), (EFI_RESULT, ''),
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(EFI_RESULT, ''), (EFI_RESULT, ''),
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('', ''), ('', '')])
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expected = [mock.call('efibootmgr', '--version'),
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@ -345,12 +349,12 @@ Boot0002 VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
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mock.call('udevadm', 'settle'),
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mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-b', '0000', '-B'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-b', '0000', '-B', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -396,6 +400,7 @@ Boot0002* Hard Disk VenHw(1fad3248-0000-7950-2166-a1e506fdb83a,01000000)..GO
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Boot0003* Network VenHw(1fad3248-0000-7950-2166-a1e506fdb83a,05000000)..GO..NO............U.E.F.I.:. . . .S.L.O.T.2. .(.2.F./.0./.0.). .P.X.E. .I.P.4. . .Q.L.o.g.i.c. .Q.L.4.1.2.6.2. .P.C.I.e. .2.5.G.b. .2.-.P.o.r.t. .S.F.P.2.8. .E.t.h.e.r.n.e.t. .A.d.a.p.t.e.r. .-. .P.X.E........A....................%.4..Z...............................................................Gd-.;.A..MQ..L.P.X.E. .I.P.4. .Q.L.o.g.i.c. .Q.L.4.1.2.6.2. .P.C.I.e. .2.5.G.b. .2.-.P.o.r.t. .S.F.P.2.8. .E.t.h.e.r.n.e.t. .A.d.a.p.t.e.r. .-. .P.X.E.......BO..NO............U.E.F.I.:. . . .S.L.O.T.1. .(.3.0./.0./.0.). .P.X.E. .I.P.4. . .Q.L.o.g.i.c. .Q.L.4.1.2.6.2. .P.C.I.e. .2.5.G.b. .2.-.P.o.r.t. .S.F.P.2.8. .E.t.h.e.r.n.e.t. .A.d.a.p.t.e.r. .-.
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Boot0004* ironic1 HD(1,GPT,55db8d03-c8f6-4a5b-9155-790dddc348fa,0x800,0x64000)/File(\EFI\boot\shimx64.efi)
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""" # noqa This is a giant literal string for testing.
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stdout_msg = stdout_msg.encode('utf-16')
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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(stdout_msg, ''), ('', ''),
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@ -407,13 +412,13 @@ Boot0004* ironic1 HD(1,GPT,55db8d03-c8f6-4a5b-9155-790dddc348fa,0x800,0x640
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mock.call('udevadm', 'settle'),
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mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-b', '0000', '-B'),
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mock.call('efibootmgr', '-b', '0004', '-B'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-b', '0000', '-B', binary=True),
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mock.call('efibootmgr', '-b', '0004', '-B', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -450,8 +455,8 @@ Boot0004* ironic1 HD(1,GPT,55db8d03-c8f6-4a5b-9155-790dddc348fa,0x800,0x640
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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('', ''), ('', ''),
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('', ''), ('', ''),
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(EFI_RESULT, ''), (EFI_RESULT, ''),
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(EFI_RESULT, ''), ('', ''),
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('', '')])
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expected = [mock.call('efibootmgr', '--version'),
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@ -460,15 +465,15 @@ Boot0004* ironic1 HD(1,GPT,55db8d03-c8f6-4a5b-9155-790dddc348fa,0x800,0x640
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mock.call('udevadm', 'settle'),
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mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic2', '-l',
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'\\WINDOWS\\system32\\winload.efi'),
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'\\WINDOWS\\system32\\winload.efi', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -28,6 +28,9 @@ from ironic_python_agent.tests.unit.samples import hardware_samples
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from ironic_python_agent import utils
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EFI_RESULT = ''.encode('utf-16')
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@mock.patch.object(os, 'walk', autospec=True)
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@mock.patch.object(os, 'access', autospec=False)
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class TestGetEfiBootloaders(base.IronicAgentTest):
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@ -115,16 +118,16 @@ class TestRunEfiBootmgr(base.IronicAgentTest):
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mock_execute.assert_has_calls(expected)
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def test__run_efibootmgr(self, mock_execute):
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mock_execute.return_value = ('', '')
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mock_execute.return_value = (''.encode('utf-16'), '')
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result = efi_utils._run_efibootmgr(['EFI/BOOT/BOOTX64.EFI'],
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self.fake_dev,
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self.fake_efi_system_part,
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self.fake_dir)
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expected = [mock.call('efibootmgr', '-v'),
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expected = [mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', self.fake_efi_system_part, '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI')]
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True)]
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self.assertIsNone(result)
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mock_execute.assert_has_calls(expected)
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@ -176,19 +179,18 @@ class TestManageUefi(base.IronicAgentTest):
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mock_is_md_device.return_value = False
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mock_efi_bl.return_value = ['EFI/BOOT/BOOTX64.EFI']
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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mock_execute.side_effect = iter([('', ''), (EFI_RESULT, ''),
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(EFI_RESULT, ''), ('', ''),
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('', ''), ('', ''),
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('', '')])
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expected = [mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -219,30 +221,34 @@ class TestManageUefi(base.IronicAgentTest):
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# at the start of the file, where as Red Hat *does*
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csv_file_data = u'shimx64.efi,Vendor String,,Grub2MadeUSDoThis\n'
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# This test also handles deleting a pre-existing matching vendor
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# string in advance.
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# string in advance. This string also includes a UTF16 character
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# *on* purpose, to force proper decoding to be tested and garbage
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# characters which can be found in OVMF test VM NVRAM records.
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dupe_entry = """
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BootCurrent: 0001
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Timeout: 0 seconds
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BootOrder: 0000,00001
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Boot0000* Vendor String HD(1,GPT,4f3c6294-bf9b-4208-9808-be45dfc34b5c)File(\EFI\Boot\BOOTX64.EFI)
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Boot0001 Vendor String HD(2,GPT,4f3c6294-bf9b-4208-9808-be45dfc34b5c)File(\EFI\Boot\BOOTX64.EFI)
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Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
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Boot0000 UTF16ÿ HD(1,GPT,4f3c6294-bf9b-4208-9808-be45dfc34b5c)File(\EFI\Boot\BOOTX64.EFI)
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Boot0001* Vendor String HD(1,GPT,4f3c6294-bf9b-4208-9808-be45dfc34b5c)File(\EFI\Boot\BOOTX64.EFI)
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Boot0002 Vendor String HD(2,GPT,4f3c6294-bf9b-4208-9808-be45dfc34b5c)File(\EFI\Boot\BOOTX64.EFI)
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Boot0003: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)N.....YM....R,Y.
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""" # noqa This is a giant literal string for testing.
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mock_execute.side_effect = iter([('', ''), (dupe_entry, ''),
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dupe_entry = dupe_entry.encode('utf-16')
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mock_execute.side_effect = iter([('', ''),
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(dupe_entry, ''),
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('', ''), ('', ''),
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('', ''), ('', ''),
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('', '')])
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expected = [mock.call('mount', self.fake_efi_system_part,
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-b', '0000', '-B'),
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mock.call('efibootmgr', '-b', '0001', '-B'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-b', '0001', '-B', binary=True),
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mock.call('efibootmgr', '-b', '0002', '-B', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
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'-p', '1', '-w',
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'-L', 'Vendor String', '-l',
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'\\EFI\\vendor\\shimx64.efi'),
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'\\EFI\\vendor\\shimx64.efi', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
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mock.call('sync')]
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@ -266,19 +272,18 @@ Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
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mock_is_md_device.return_value = False
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mock_efi_bl.return_value = ['EFI/BOOT/BOOTX64.EFI']
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mock_execute.side_effect = iter([('', ''), ('', ''),
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('', ''), ('', ''),
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mock_execute.side_effect = iter([('', ''), (EFI_RESULT, ''),
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(EFI_RESULT, ''), ('', ''),
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('', ''), ('', ''),
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('', '')])
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expected = [mock.call('mount', '/dev/fakenvme0p1',
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self.fake_dir + '/boot/efi'),
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mock.call('efibootmgr', '-v'),
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mock.call('efibootmgr', '-v', binary=True),
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mock.call('efibootmgr', '-v', '-c', '-d', '/dev/fakenvme0',
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'-p', '1', '-w',
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'-L', 'ironic1', '-l',
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'\\EFI\\BOOT\\BOOTX64.EFI'),
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'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
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mock.call('umount', self.fake_dir + '/boot/efi',
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attempts=3, delay_on_retry=True),
|
||||
mock.call('sync')]
|
||||
|
|
@ -301,19 +306,18 @@ Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
|
|||
mock_is_md_device.return_value = False
|
||||
|
||||
mock_efi_bl.return_value = ['EFI/BOOT/BOOTX64.EFI']
|
||||
|
||||
mock_execute.side_effect = iter([('', ''), ('', ''),
|
||||
('', ''), ('', ''),
|
||||
mock_execute.side_effect = iter([('', ''), (EFI_RESULT, ''),
|
||||
(EFI_RESULT, ''), ('', ''),
|
||||
('', ''), ('', ''),
|
||||
('', '')])
|
||||
|
||||
expected = [mock.call('mount', self.fake_efi_system_part,
|
||||
self.fake_dir + '/boot/efi'),
|
||||
mock.call('efibootmgr', '-v'),
|
||||
mock.call('efibootmgr', '-v', binary=True),
|
||||
mock.call('efibootmgr', '-v', '-c', '-d', self.fake_dev,
|
||||
'-p', '1', '-w',
|
||||
'-L', 'ironic1', '-l',
|
||||
'\\EFI\\BOOT\\BOOTX64.EFI'),
|
||||
'\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
|
||||
mock.call('umount', self.fake_dir + '/boot/efi',
|
||||
attempts=3, delay_on_retry=True),
|
||||
mock.call('sync')]
|
||||
|
|
@ -347,11 +351,14 @@ Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
|
|||
mock_get_component_devices.return_value = ['/dev/sda3', '/dev/sdb3']
|
||||
|
||||
mock_efi_bl.return_value = ['EFI/BOOT/BOOTX64.EFI']
|
||||
|
||||
mock_execute.side_effect = iter([('', ''), ('', ''),
|
||||
('', ''), ('', ''),
|
||||
('', ''), ('', ''),
|
||||
('', ''), ('', ''),
|
||||
mock_execute.side_effect = iter([('', ''),
|
||||
('', ''),
|
||||
('', ''),
|
||||
(EFI_RESULT, ''),
|
||||
(EFI_RESULT, ''),
|
||||
(EFI_RESULT, ''),
|
||||
(EFI_RESULT, ''),
|
||||
('', ''),
|
||||
('', '')])
|
||||
|
||||
expected = [mock.call('mount', self.fake_efi_system_part,
|
||||
|
|
@ -360,14 +367,14 @@ Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
|
|||
attempts=3, delay_on_retry=True),
|
||||
mock.call('mount', self.fake_efi_system_part,
|
||||
self.fake_dir + '/boot/efi'),
|
||||
mock.call('efibootmgr', '-v'),
|
||||
mock.call('efibootmgr', '-v', binary=True),
|
||||
mock.call('efibootmgr', '-v', '-c', '-d', '/dev/sda3',
|
||||
'-p', '3', '-w', '-L', 'ironic1 (RAID, part0)',
|
||||
'-l', '\\EFI\\BOOT\\BOOTX64.EFI'),
|
||||
mock.call('efibootmgr', '-v'),
|
||||
'-l', '\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
|
||||
mock.call('efibootmgr', '-v', binary=True),
|
||||
mock.call('efibootmgr', '-v', '-c', '-d', '/dev/sdb3',
|
||||
'-p', '3', '-w', '-L', 'ironic1 (RAID, part1)',
|
||||
'-l', '\\EFI\\BOOT\\BOOTX64.EFI'),
|
||||
'-l', '\\EFI\\BOOT\\BOOTX64.EFI', binary=True),
|
||||
mock.call('umount', self.fake_dir + '/boot/efi',
|
||||
attempts=3, delay_on_retry=True),
|
||||
mock.call('sync')]
|
||||
|
|
@ -425,7 +432,7 @@ Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
|
|||
|
||||
expected = [mock.call('mount', self.fake_efi_system_part,
|
||||
self.fake_dir + '/boot/efi'),
|
||||
mock.call('efibootmgr', '-v'),
|
||||
mock.call('efibootmgr', '-v', binary=True),
|
||||
mock.call('umount', self.fake_dir + '/boot/efi',
|
||||
attempts=3, delay_on_retry=True),
|
||||
mock.call('sync')]
|
||||
|
|
@ -462,7 +469,7 @@ Boot0002: VENDMAGIC FvFile(9f3c6294-bf9b-4208-9808-be45dfc34b51)
|
|||
|
||||
expected = [mock.call('mount', self.fake_efi_system_part,
|
||||
self.fake_dir + '/boot/efi'),
|
||||
mock.call('efibootmgr', '-v'),
|
||||
mock.call('efibootmgr', '-v', binary=True),
|
||||
mock.call('umount', self.fake_dir + '/boot/efi',
|
||||
attempts=3, delay_on_retry=True)]
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,9 @@
|
|||
---
|
||||
fixes:
|
||||
- |
|
||||
Fixes UEFI NVRAM record handling with efibootmgr so we can accept and
|
||||
handle UTF-16 encoded data which is to be expected in UEFI NVRAM as
|
||||
the records are UTF-16 encoded.
|
||||
- |
|
||||
Fixes handling of UEFI NVRAM records to allow for unexpected characters
|
||||
in the response, so it is non-fatal to Ironic.
|
||||
Loading…
Reference in New Issue