[Qemu-devel] qemu-ga: add support for Windows

[Michael Roth <mdroth@linux.vnet.ibm.com>]

These patches apply/work on top of:
[PATCH] qemu-ga: Add schema documentation for types
[PATCH] qemu-ga: add guest-set-support-level command
[PATCH] main-loop: Fix SetEvent() on uninitialized handle on win32
[PATCH] main-loop: For tools, initialize timers as part of qemu_init_main_loop()

And can also be obtained from:
git://github.com/mdroth/qemu.git qga-win32-v1

These patches add support for Windows to the QEMU guest agent. With these
patches the following guest agent commands are supported on Windows:

guest-ping
guest-info
guest-sync
guest-shutdown

The guest-file* commands can essentially be enabled for Windows as-is, but since
mingw does not honor the O_NONBLOCK flag, they'll need to be reworked if we're
to retain the current non-blocking behavior.

The rest of the commands are currently stubbed out for Windows (qemu-ga will
return an "unsupported" error), but it should be easy to implement these going
forward with basic Windows support/infrastructure in place.

The build was tested using Fedora 15 with a MinGW cross-build target via:

    configure --enable-guest-agent --cross-prefix=i686-pc-mingw32-
    make qemu-ga.exe

The executable was tested using Windows XP SP3, and partially tested using
Windows Server 2008 and Windows 7 (no I/O for the latter 2, having issues with
virtio-win drivers atm). GLib 2.28+ for Windows is required. You can install
qemu-ga as a start-on-boot service by running:

    ./qemu-ga --service install

And start/stop manually via:

    net start qemu-ga
    net stop qemu-ga

Many thanks to Gal Hammer for contributing the service integration and shutdown
code.

 Makefile.objs              |    8 +-
 configure                  |    2 +-
 qemu-ga.c                  |  413 ++++++++++++++-----------------
 qga/channel-posix.c        |  246 ++++++++++++++++++
 qga/channel-win32.c        |  337 +++++++++++++++++++++++++
 qga/channel.h              |   33 +++
 qga/commands-posix.c       |  528 ++++++++++++++++++++++++++++++++++++++
 qga/commands-win32.c       |  130 ++++++++++
 qga/commands.c             |   86 +++++++
 qga/guest-agent-commands.c |  598 --------------------------------------------
 qga/guest-agent-core.h     |    3 +-
 qga/service-win32.c        |  114 +++++++++
 qga/service-win32.h        |   30 +++
 14 files changed, 1698 insertions(+), 832 deletions(-)