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Noticed while reviewing another patch that had an accidental mismatch due to refactoring. An audit of the code showed that very few callers of vshCommandOpt were expecting a return of -2, indicating programmer error, and of those that DID check, they just propagated that status to yet another caller that did not check. Fix this by making the code blatantly warn the programmer, rather than silently ignoring it and possibly doing the wrong thing downstream. I know that we frown on assert()/abort() inside libvirtd (libraries should NEVER kill the program that linked them), but as virsh is an app rather than the library, and as this is not the first use of assert() in virsh, I think this approach is okay. * tools/virsh.h (vshCommandOpt): Drop declaration. * tools/virsh.c (vshCommandOpt): Make static, and add a parameter. Abort on programmer errors rather than making callers repeat that logic. (vshCommandOptInt, vshCommandOptUInt, vshCommandOptUL) (vshCommandOptString, vshCommandOptStringReq) (vshCommandOptLongLong, vshCommandOptULongLong) (vshCommandOptBool): Adjust callers. 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>