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When running qemu:///system instance, libvirtd runs as root, but QEMU may optionally be configured to run non-root. When then saving a guest to a state file, the file is initially created as root, and thus QEMU cannot write to it. It is also missing labelling required to allow access via SELinux. * src/qemu/qemu_driver.c: Set ownership on save image before running migrate command in virDomainSave impl. Call out to security driver to set save image labelling * src/security/security_driver.h: Add driver APIs for setting and restoring saved state file labelling * src/security/security_selinux.c: Implement saved state file labelling for SELinux
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>