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由 Michal Privoznik 提交于
With our new qemu namespace code in place, the relabelling of devices is done not as good is it could: a child process is spawned, it enters the mount namespace of the qemu process and then runs desired API of the security driver. Problem with this approach is that internal state transition of the security driver done in the child process is not reflected in the parent process. While currently it wouldn't matter that much, it is fairly easy to forget about that. We should take the extra step now while this limitation is still fresh in our minds. Three new APIs are introduced here: virSecurityManagerTransactionStart() virSecurityManagerTransactionCommit() virSecurityManagerTransactionAbort() The Start() is going to be used to let security driver know that we are starting a new transaction. During a transaction no security labels are actually touched, but rather recorded and only at Commit() phase they are actually updated. Should something go wrong Abort() aborts the transaction freeing up all memory allocated by transaction. Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
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