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While reviewing proposed VIR_STRDUP conversions, I've already noticed several places that do: if (str && VIR_STRDUP(dest, str) < 0) which can be simplified by allowing str to be NULL (something that strdup() doesn't allow). Meanwhile, code that wants to ensure a non-NULL dest regardless of the source can check for <= 0. Also, make it part of the VIR_STRDUP contract that macro arguments are evaluated exactly once. * src/util/virstring.h (VIR_STRDUP, VIR_STRDUP_QUIET, VIR_STRNDUP) (VIR_STRNDUP_QUIET): Improve contract. * src/util/virstring.c (virStrdup, virStrndup): Change return conventions. * docs/hacking.html.in: Document this. * HACKING: Regenerate. Signed-off-by: Eric Blake <eblake@redhat.com>
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>