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When starting a machine the DAC security driver tries to set the UID and GID of the newly spawned process. This worked as desired if the desired label was set. When the label was missing a logical bug in virSecurityDACGenLabel() caused that uninitialised values were used as uid and gid for the new process. With this patch, default values (from qemu driver configuration) are used if the label is not found.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>