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import os
from re import compile as regexp
from leapp.libraries.stdlib import run
_current_boot_matcher = regexp(r'BootCurrent: (?P<boot_current>([0-9A-F]*))')
_next_boot_matcher = regexp(r'BootNext: (?P<boot_next>([0-9A-F]*))')
def get_current_boot_match(string):
match = _current_boot_matcher.match(string)
if not match:
return None
captured_groups = match.groupdict()
return captured_groups['boot_current']
def get_next_boot_match(string):
match = _next_boot_matcher.match(string)
if not match:
return None
captured_groups = match.groupdict()
return captured_groups['boot_next']
def maybe_emit_updated_boot_entry():
if not os.path.exists('/sbin/efibootmgr'):
return
efi_info = run(['/sbin/efibootmgr'], checked=False, split=True)
if efi_info['exit_code'] != 0:
# Not an efi system
return
current_boot, next_boot = None, None
for line in efi_info['stdout']:
current_match = get_current_boot_match(line)
if current_match:
current_boot = current_match
next_match = get_next_boot_match(line)
if next_match:
next_boot = next_match
if current_boot and not next_boot:
# We set BootNext to CurrentBoot only if BootNext wasn't previously set
run(['/sbin/efibootmgr', '-n', current_boot])