[Qemu-devel] [PATCH v4 00/10] qemu-ga: fsfreeze on Windows using VSS

[Tomoki Sekiyama <tomoki.sekiyama@hds.com>]

Hi,

This patch series adds fsfreeze support for Windows qemu-guest-agent.

changes from v3:
 -[01/10] Use c++ instead of g++ in configureing C++ compiler if neither
          $cross_prefix nor $CXX is specified.
 -[02/10] Add "alternative representations" as a reserved keywords in qapi.py.
 -[03/10 (newly added)] modify check-patch.pl to check C++ source code
 -[04/10] Improve compatibility (POSIX-compliant).
 -[04/10] Added some error checks.
 -[05/10] Added --with-win-sdk option to configure path to Windows SDK.
 -[06/10] Patch v3 09/11 (adding binary .tlb file) is squashed into this patch
          in order to avoid git-bisect failure.
 -[06/10 & 07/10] Fix coding style.
 -Dropped Patch v3 11/11 (encode error desc of exception with current locale)

changes from v2:
 -[06/11] Fix errors in Windows 7, reported by Li Baiqing

changes from v1: 
 - Fix out-tree build by stop using recursive Makefile
 - Added script to extract VSS SDK headers on POSIX systems using msitools
   (thanks Paolo)
 - Remove some unnecessary header files

v3: http://lists.nongnu.org/archive/html/qemu-devel/2013-05/msg02771.html


* Description
  In Windows, VSS (Volume Shadow Copy Service) provides a facility to
  quiesce filesystems and applications before disk snapshots are taken.
  This patch series implements "fsfreeze" command of qemu-ga using VSS.


* How to build & run qemu-ga with VSS support

 - Download Microsoft VSS SDK from:
   http://www.microsoft.com/en-us/download/details.aspx?id=23490

 - Setup the SDK
   scripts/extract-vsssdk-headers setup.exe (on POSIX-systems)

 - Specify installed SDK directory to configure option as:
   ./configure -with-vss-sdk="path/to/VSS SDK" --cross-prefix=i686-w64-mingw32-

 - make qemu-ga.exe

 - Install qemu-ga.exe, qga/vss-win32-provider/qga-provider.{dll,tlb}, and
   the other required mingw libraries into the same directory in guests

 - Run `qemu-ga.exe -s install' and `net start qemu-ga' in the guests

Any feedback are appreciated.

---
Tomoki Sekiyama (10):
      configure: Support configuring c++ compiler
      Add c++ keywords to QAPI helper script
      checkpatch.pl: check .cpp files
      Add a script to extract VSS SDK headers on POSIX system
      qemu-ga: Add configure options to specify path to Windows/VSS SDK
      qemu-ga: Add Windows VSS provider to quiesce applications on fsfreeze
      qemu-ga: Add Windows VSS requester to quiesce applications and filesystems
      qemu-ga: call Windows VSS requester in fsfreeze command handler
      qemu-ga: install Windows VSS provider on `qemu-ga -s install'
      QMP/qemu-ga-client: make timeout longer for guest-fsfreeze-freeze command


 .gitignore                              |    1 
 Makefile                                |    3 
 Makefile.objs                           |    2 
 QMP/qemu-ga-client                      |    4 
 configure                               |   87 +++++
 hmp.c                                   |    2 
 hw/pci/pci.c                            |    2 
 qga/Makefile.objs                       |    7 
 qga/commands-win32.c                    |   74 ++++-
 qga/main.c                              |   41 +++
 qga/vss-win32-provider.h                |   26 ++
 qga/vss-win32-provider/Makefile.objs    |   24 ++
 qga/vss-win32-provider/install.cpp      |  493 +++++++++++++++++++++++++++++++
 qga/vss-win32-provider/provider.cpp     |  479 ++++++++++++++++++++++++++++++
 qga/vss-win32-provider/qga-provider.def |   10 +
 qga/vss-win32-provider/qga-provider.idl |   20 +
 qga/vss-win32-provider/qga-provider.tlb |  Bin
 qga/vss-win32-requester.cpp             |  419 ++++++++++++++++++++++++++
 qga/vss-win32-requester.h               |   31 ++
 qga/vss-win32.h                         |   86 +++++
 rules.mak                               |    9 +
 scripts/checkpatch.pl                   |   34 ++
 scripts/extract-vsssdk-headers          |   36 ++
 scripts/qapi.py                         |   12 +
 24 files changed, 1880 insertions(+), 22 deletions(-)
 create mode 100644 qga/vss-win32-provider.h
 create mode 100644 qga/vss-win32-provider/Makefile.objs
 create mode 100644 qga/vss-win32-provider/install.cpp
 create mode 100644 qga/vss-win32-provider/provider.cpp
 create mode 100644 qga/vss-win32-provider/qga-provider.def
 create mode 100644 qga/vss-win32-provider/qga-provider.idl
 create mode 100644 qga/vss-win32-provider/qga-provider.tlb
 create mode 100644 qga/vss-win32-requester.cpp
 create mode 100644 qga/vss-win32-requester.h
 create mode 100644 qga/vss-win32.h
 create mode 100755 scripts/extract-vsssdk-headers