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vm: move kernel presence validation to event handler

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Setter is called also on qubes.xml load, so missing kernel breaks
qubes.xml parsing - for example qubesd startup to fix that property.
This commit is contained in:
Marek Marczykowski-Górecki 2017-06-20 17:43:11 +02:00
parent 4241b39b94
commit 3ddc052af3
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GPG Key ID: 063938BA42CFA724
1 changed files with 18 additions and 12 deletions
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30
qubes/vm/qubesvm.py
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@ -103,18 +103,6 @@ def _setter_kernel(self, prop, value):
if '/' in value:
raise qubes.exc.QubesPropertyValueError(self, prop, value,
'Kernel name cannot contain \'/\'')
dirname = os.path.join(
qubes.config.system_path['qubes_base_dir'],
qubes.config.system_path['qubes_kernels_base_dir'],
value)
if not os.path.exists(dirname):
raise qubes.exc.QubesPropertyValueError(self, prop, value,
'Kernel {!r} not installed'.format(value))
for filename in ('vmlinuz', 'initramfs'):
if not os.path.exists(os.path.join(dirname, filename)):
raise qubes.exc.QubesPropertyValueError(self, prop, value,
'Kernel {!r} not properly installed: missing {!r} file'.format(
value, filename))
return value
@ -764,6 +752,24 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
subprocess.check_call(['sudo', 'systemctl', '-q', 'disable',
'qubes-vm@{}.service'.format(oldvalue)])
@qubes.events.handler('property-pre-set:kernel')
def on_property_pre_set_kernel(self, event, name, newvalue, oldvalue=None):
# pylint: disable=unused-argument
dirname = os.path.join(
qubes.config.system_path['qubes_base_dir'],
qubes.config.system_path['qubes_kernels_base_dir'],
newvalue)
if not os.path.exists(dirname):
raise qubes.exc.QubesPropertyValueError(self,
self.property_get_def(name), newvalue,
'Kernel {!r} not installed'.format(newvalue))
for filename in ('vmlinuz', 'initramfs'):
if not os.path.exists(os.path.join(dirname, filename)):
raise qubes.exc.QubesPropertyValueError(self,
self.property_get_def(name), newvalue,
'Kernel {!r} not properly installed: '
'missing {!r} file'.format(newvalue, filename))
@qubes.events.handler('property-set:name')
def on_property_set_name(self, event, name, newvalue, oldvalue=None):
# pylint: disable=unused-argument