c737f225a9
Modify networkSetupPrivateChains() in the network driver to accept a firewallBackend argument so it will know which backend to call. (right now it always calls the iptables version of the lower level function, but in the future it could instead call the nftables version based on configuration). But networkSetupPrivateChains() was being called with virOnce(), and virOnce() doesn't support calling functions that require an argument (it's based on pthread_once(), which accepts no arguments, so it's not something we can easily fix in our implementation of virOnce()). To solve this dilemma, this patch eliminates use of virOnce() by adding a static lock, and putting all of networkSetupPrivateChains() (including the setting of "chainInitDone") inside a lock guard - now the places that used to call it via virOnce() can safely call it directly instead (adding in the necessary argument to specify backend). (If it turns out to be significant, we could optimize this by checking for chainInitDone outside the lock guard, returning immediately if it's already set, and then moving the setting of chainInitDone up to the top of the guarded section.) Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser
General Public License, version 2.1 (or later). Some parts of the code
that are not part of the C library may have the more restrictive GNU
General Public License, version 2.0 (or later). See the files
COPYING.LESSER and COPYING for full license
terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- users@lists.libvirt.org (for user discussions)
- devel@lists.libvirt.org (for development only)
Further details on contacting the project are available on the website: