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48cb9f0542
Let's do some more code reuse - there are 3 other callers that care to check/get the compress program. Each of those though cares whether the requested cfg image is valid and exists. So, add a parameter to handle those cases. NB: We won't need to initialize the returned value in the case where the cfg image doesn't exist since the called program will handle that.
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>