[libvirt] [PATCH 0/8] Early preview: Re-factoring XDR RPC code

NB: This patch series isn't intended to be applied yet. The current remote driver and libvirtd daemon have a horrible mix of network I/O, RPC dispatch and RPC handling functionality. It it neccessary to introduce a new daemon to provide a lock manager for VM disks. Doing so would effectively require cut+paste of a large part of libvirtd code since there are no reusable APis in it. Likewise for the client side. To address this problem, this series is an attempt to produce a reusable set of APIs for building RPC servers and clients. The new APIs will handle all the networking/sockets functionality and all the RPC dispatch/serialization/deserialization code. This will enable libvirtd and the remote driver to be gutted, so that they only contain the code for actually implementing the RPC handlers. Thus a lock daemon + lock plugin can be provided without any code duplication. This will also make it far easier for us to introduce new RPC programs, eg an administrative program to allow libvirtd itself to be manipulated, say, to changing logging levels on the fly, kill mis-behaving network client, etc, etc. It would also make it practical to experiment with splitting libvirtd up into smaller daemons each handling one area of functionality. This would in turn make it practical to write useful SELinux policy for confining libvirt daemons This series is *far* from complete. The streams stuff is completely missing in the new APis. I have also not yet gutted libvirtd, only the remote driver. It is also not fully tested for ABI wire compatibility with existing libvirtd, though I believe it is correctly preserving ABI. The diffstat is slightly mis-leading because lots of code remains to be deleted from daemon/libvirtd.c and daemon/dispatch.c. None the less, it is expected that the total lines will increase, but this wll be offset by the improved code clarity and separation of functionality. Daniel daemon/event.c | 3 src/Makefile.am | 90 + src/remote/remote_driver.c | 2530 ++++++-------------------------------- src/rpc/virnetclient.c | 1237 ++++++++++++++++++ src/rpc/virnetclient.h | 60 src/rpc/virnetclientprogram.c | 258 +++ src/rpc/virnetclientprogram.h | 71 + src/rpc/virnetclientsaslcontext.c | 246 +++ src/rpc/virnetclientsaslcontext.h | 66 src/rpc/virnetmessage.c | 215 +++ src/rpc/virnetmessage.h | 31 src/rpc/virnetprotocol.c | 108 + src/rpc/virnetprotocol.h | 81 + src/rpc/virnetprotocol.x | 162 ++ src/rpc/virnetserver.c | 654 +++++++++ src/rpc/virnetserver.h | 74 + src/rpc/virnetserverclient.c | 974 ++++++++++++++ src/rpc/virnetserverclient.h | 40 src/rpc/virnetservermessage.h | 20 src/rpc/virnetserverprogram.c | 437 ++++++ src/rpc/virnetserverprogram.h | 76 + src/rpc/virnetserverservice.c | 208 +++ src/rpc/virnetserverservice.h | 32 src/rpc/virnetsocket.c | 715 ++++++++++ src/rpc/virnetsocket.h | 97 + src/rpc/virnettlscontext.c | 611 +++++++++ src/rpc/virnettlscontext.h | 63 src/util/logging.c | 4 src/util/threadpool.c | 178 ++ src/util/threadpool.h | 23 src/virtlockd.c | 620 +++++++++ 31 files changed, 7866 insertions(+), 2118 deletions(-)