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This provides a new struct that contains a buffer for the RPC message header+payload, as well as a decoded copy of the message header. There is an API for applying a XDR encoding & decoding of the message headers and payloads. There are also APIs for maintaining a simple FIFO queue of message instances. Expected usage scenarios are: To send a message msg = virNetMessageNew() ...fill in msg->header fields.. virNetMessageEncodeHeader(msg) ...loook at msg->header fields to determine payload filter virNetMessageEncodePayload(msg, xdrfilter, data) ...send msg->bufferLength worth of data from buffer To receive a message msg = virNetMessageNew() ...read VIR_NET_MESSAGE_LEN_MAX of data into buffer virNetMessageDecodeLength(msg) ...read msg->bufferLength-msg->bufferOffset of data into buffer virNetMessageDecodeHeader(msg) ...look at msg->header fields to determine payload filter virNetMessageDecodePayload(msg, xdrfilter, data) ...run payload processor * src/Makefile.am: Add to libvirt-net-rpc.la * src/rpc/virnetmessage.c, src/rpc/virnetmessage.h: Internal message handling API. * testutils.c, testutils.h: Helper for printing binary differences * virnetmessagetest.c: Validate all XDR encoding/decoding
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>