lib: Grab write lock when modifying list of domains
In some places where virDomainObjListForEach() is called the passed callback calls virDomainObjListRemoveLocked(). Well, this is unsafe, because the former only grabs a read lock but the latter modifies the list. I've identified the following unsafe calls: - qemuProcessReconnectAll() - libxlReconnectDomains() The rest seem to be safe. Signed-off-by: NMichal Privoznik <mprivozn@redhat.com> Reviewed-by: NJán Tomko <jtomko@redhat.com>
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