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由 Paolo Bonzini 提交于
When running unprivileged, virSetUIDGIDWithCaps will fail because it tries to add the requested capabilities to the permitted and effective sets. Detect this case, and invoke the child with cleared permitted and effective sets. If it is a setuid program, it will get them. Some care is needed also because you cannot drop capabilities from the bounding set without CAP_SETPCAP. Because of that, ignore errors from setting the bounding set. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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