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pkg/machine: refresh config after we hold lock

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Currently we first read the conf and then lock, this is racy because
while we wait for the lock another process might change the state so
the only way to have the actual current state is to read the file
while holding the lock.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
This commit is contained in:
Paul Holzinger 2024-03-13 14:17:43 +01:00
parent be25514b5f
commit 1dfd3d3d12
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GPG key ID: EB145DD938A3CAF2
1 changed files with 9 additions and 0 deletions
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9
pkg/machine/shim/host.go
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@ -323,6 +323,9 @@ func Stop(mc *vmconfigs.MachineConfig, mp vmconfigs.VMProvider, dirs *machineDef
// an error. so putting in one place instead of sprinkling all over.
mc.Lock()
defer mc.Unlock()
if err := mc.Refresh(); err != nil {
return fmt.Errorf("reload config: %w", err)
}
return stopLocked(mc, mp, dirs, hardStop)
}
@ -377,6 +380,9 @@ func Start(mc *vmconfigs.MachineConfig, mp vmconfigs.VMProvider, dirs *machineDe
mc.Lock()
defer mc.Unlock()
if err := mc.Refresh(); err != nil {
return fmt.Errorf("reload config: %w", err)
}
// Set starting to true
mc.Starting = true
@ -538,6 +544,9 @@ func Set(mc *vmconfigs.MachineConfig, mp vmconfigs.VMProvider, opts machineDefin
func Remove(mc *vmconfigs.MachineConfig, mp vmconfigs.VMProvider, dirs *machineDefine.MachineDirs, opts machine.RemoveOptions) error {
mc.Lock()
defer mc.Unlock()
if err := mc.Refresh(); err != nil {
return fmt.Errorf("reload config: %w", err)
}
state, err := mp.State(mc, false)
if err != nil {