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Requiring pre-allocation was an unusual idiom. It allowed iteration over the backing chain to use fewer mallocs, but made one-shot clients harder to read. Also, this makes it easier for a future patch to move away from opening fds on every iteration over the chain. * src/util/storage_file.h (virStorageFileGetMetadataFromFD): Alter signature. * src/util/storage_file.c (virStorageFileGetMetadataFromFD): Allocate return value. (virStorageFileGetMetadata): Update clients. * src/conf/domain_conf.c (virDomainDiskDefForeachPath): Likewise. * src/qemu/qemu_driver.c (qemuDomainGetBlockInfo): Likewise. * src/storage/storage_backend_fs.c (virStorageBackendProbeTarget): Likewise.
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>