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https://gitlab.com/qemu-project/qemu
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b39297aedf
Adds VSS provider and requester as a qga-vss.dll, which is loaded by Windows VSS service as well as by qemu-ga. "provider.cpp" implements a basic stub of a software VSS provider. Currently, this module only relays a frozen event from VSS service to the agent, and thaw event from the agent to VSS service, to block VSS process to keep the system frozen while snapshots are taken at the host. To register the provider to the guest system as COM+ application, the type library (.tlb) for qga-vss.dll is required. To build it from COM IDL (.idl), VisualC++, MIDL and stdole2.tlb in Windows SDK are required. This patch also adds pre-compiled .tlb file in the repository in order to enable cross-compile qemu-ga.exe for Windows with VSS support. "requester.cpp" provides the VSS requester to kick the VSS snapshot process. Qemu-ga.exe works without the DLL, although fsfreeze features are disabled. These functions are only supported in Windows 2003 or later. In older systems, fsfreeze features are disabled. In several versions of Windows which don't support attribute VSS_VOLSNAP_ATTR_NO_AUTORECOVERY, DoSnapshotSet fails with error VSS_E_OBJECT_NOT_FOUND. In this patch, we just ignore this error. To solve this fundamentally, we need a framework to handle mount writable snapshot on guests, which is required by VSS auto-recovery feature (cleanup phase after a snapshot is taken). Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
127 lines
3.9 KiB
Text
127 lines
3.9 KiB
Text
#######################################################################
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# Common libraries for tools and emulators
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stub-obj-y = stubs/
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util-obj-y = util/ qobject/ qapi/ trace/
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#######################################################################
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# block-obj-y is code used by both qemu system emulation and qemu-img
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block-obj-y = async.o thread-pool.o
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block-obj-y += nbd.o block.o blockjob.o
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block-obj-y += main-loop.o iohandler.o qemu-timer.o
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block-obj-$(CONFIG_POSIX) += aio-posix.o
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block-obj-$(CONFIG_WIN32) += aio-win32.o
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block-obj-y += block/
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block-obj-y += qapi-types.o qapi-visit.o
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block-obj-y += qemu-io-cmds.o
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block-obj-y += qemu-coroutine.o qemu-coroutine-lock.o qemu-coroutine-io.o
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block-obj-y += qemu-coroutine-sleep.o
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block-obj-y += coroutine-$(CONFIG_COROUTINE_BACKEND).o
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ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy)
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# Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
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# only pull in the actual virtio-9p device if we also enabled virtio.
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CONFIG_REALLY_VIRTFS=y
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endif
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######################################################################
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# smartcard
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libcacard-y += libcacard/cac.o libcacard/event.o
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libcacard-y += libcacard/vcard.o libcacard/vreader.o
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libcacard-y += libcacard/vcard_emul_nss.o
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libcacard-y += libcacard/vcard_emul_type.o
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libcacard-y += libcacard/card_7816.o
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libcacard-y += libcacard/vcardt.o
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######################################################################
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# Target independent part of system emulation. The long term path is to
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# suppress *all* target specific code in case of system emulation, i.e. a
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# single QEMU executable should support all CPUs and machines.
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ifeq ($(CONFIG_SOFTMMU),y)
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common-obj-y = $(block-obj-y) blockdev.o blockdev-nbd.o block/
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common-obj-y += net/
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common-obj-y += readline.o
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common-obj-y += qdev-monitor.o device-hotplug.o
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common-obj-$(CONFIG_WIN32) += os-win32.o
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common-obj-$(CONFIG_POSIX) += os-posix.o
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common-obj-$(CONFIG_LINUX) += fsdev/
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common-obj-y += migration.o migration-tcp.o
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common-obj-$(CONFIG_RDMA) += migration-rdma.o
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common-obj-y += qemu-char.o #aio.o
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common-obj-y += block-migration.o
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common-obj-y += page_cache.o xbzrle.o
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common-obj-$(CONFIG_POSIX) += migration-exec.o migration-unix.o migration-fd.o
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common-obj-$(CONFIG_SPICE) += spice-qemu-char.o
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common-obj-y += audio/
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common-obj-y += hw/
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common-obj-y += ui/
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common-obj-y += bt-host.o bt-vhci.o
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common-obj-y += dma-helpers.o
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common-obj-y += vl.o
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common-obj-y += tpm.o
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common-obj-$(CONFIG_SLIRP) += slirp/
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common-obj-y += backends/
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common-obj-$(CONFIG_SECCOMP) += qemu-seccomp.o
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common-obj-$(CONFIG_SMARTCARD_NSS) += $(libcacard-y)
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######################################################################
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# qapi
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common-obj-y += qmp-marshal.o
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common-obj-y += qmp.o hmp.o
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endif
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######################################################################
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# some qapi visitors are used by both system and user emulation:
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common-obj-y += qapi-visit.o qapi-types.o
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#######################################################################
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# Target-independent parts used in system and user emulation
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common-obj-y += qemu-log.o
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common-obj-y += tcg-runtime.o
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common-obj-y += hw/
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common-obj-y += qom/
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common-obj-y += disas/
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######################################################################
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# Resource file for Windows executables
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version-obj-$(CONFIG_WIN32) += $(BUILD_DIR)/version.o
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version-lobj-$(CONFIG_WIN32) += $(BUILD_DIR)/version.lo
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######################################################################
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# guest agent
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# FIXME: a few definitions from qapi-types.o/qapi-visit.o are needed
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# by libqemuutil.a. These should be moved to a separate .json schema.
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qga-obj-y = qga/ qapi-types.o qapi-visit.o
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qga-vss-dll-obj-y = qga/
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vl.o: QEMU_CFLAGS+=$(GPROF_CFLAGS)
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vl.o: QEMU_CFLAGS+=$(SDL_CFLAGS)
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QEMU_CFLAGS+=$(GLIB_CFLAGS)
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nested-vars += \
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stub-obj-y \
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util-obj-y \
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qga-obj-y \
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qga-vss-dll-obj-y \
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block-obj-y \
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common-obj-y
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dummy := $(call unnest-vars)
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