[libvirt] [PATCH 09/10 v2] device: cleanup input device code
Pavel Hrdina
phrdina at redhat.com
Fri Dec 11 06:04:35 UTC 2015
The current code was a little bit odd. At first we've removed all
possible implicit input devices from domain definition to add them later
back if there was any graphics device defined while parsing XML
description. That's not all, while formating domain definition to XML
description we at first ignore any input devices with bus different to
USB and VIRTIO and few lines later we add implicit input devices to XML.
This seems to me as a lot of code for nothing. This patch may look
to be more complicated than original approach, but this is a preferred
way to modify/add driver specific staff only in those drivers and not
deal with them in common parsing/formating functions.
The update is to add those implicit input devices into config XML to
follow the real HW configuration visible by guest OS.
There was also inconsistence between our behavior and QEMU's in the way,
that in QEMU there is no way how to disable those implicit input devices
for x86 architecture and they are available always, even without graphics
device. This applies also to XEN hypervisor. VZ driver already does its
part by putting correct implicit devices into live XML.
Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
new in v2:
- input devices are added into offline XML
src/Makefile.am | 4 +--
src/conf/domain_conf.c | 77 ++--------------------------------------------
src/libxl/libxl_domain.c | 5 +++
src/qemu/qemu_domain.c | 22 +++++++++++++
src/xen/xen_driver.c | 5 +++
src/xenapi/xenapi_driver.c | 5 +++
src/xenconfig/xen_common.c | 22 +++++++++++++
src/xenconfig/xen_common.h | 2 ++
8 files changed, 66 insertions(+), 76 deletions(-)
diff --git a/src/Makefile.am b/src/Makefile.am
index 7219f7c..7c8869a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1210,7 +1210,7 @@ libvirt_driver_xen_impl_la_CFLAGS = \
-I$(srcdir)/xenconfig \
$(AM_CFLAGS)
libvirt_driver_xen_impl_la_LDFLAGS = $(AM_LDFLAGS)
-libvirt_driver_xen_impl_la_LIBADD = $(XEN_LIBS)
+libvirt_driver_xen_impl_la_LIBADD = $(XEN_LIBS) libvirt_xenconfig.la
libvirt_driver_xen_impl_la_SOURCES = $(XEN_DRIVER_SOURCES)
endif WITH_XEN
@@ -1271,7 +1271,7 @@ if WITH_XENAPI
noinst_LTLIBRARIES += libvirt_driver_xenapi.la
libvirt_la_BUILT_LIBADD += libvirt_driver_xenapi.la
libvirt_driver_xenapi_la_CFLAGS = $(LIBXENSERVER_CFLAGS) $(CURL_CFLAGS) \
- -I$(srcdir)/conf $(AM_CFLAGS)
+ -I$(srcdir)/conf -I$(srcdir)/xenconfig $(AM_CFLAGS)
libvirt_driver_xenapi_la_LDFLAGS = $(AM_LDFLAGS)
libvirt_driver_xenapi_la_LIBADD = $(LIBXENSERVER_LIBS) $(CURL_LIBS)
libvirt_driver_xenapi_la_SOURCES = $(XENAPI_DRIVER_SOURCES)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 5200c27..95d471b 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -15915,27 +15915,6 @@ virDomainDefParseXML(xmlDocPtr xml,
goto error;
}
- /* With QEMU / KVM / Xen graphics, mouse + PS/2 is implicit
- * with graphics, so don't store it.
- * XXX will this be true for other virt types ? */
- if ((def->os.type == VIR_DOMAIN_OSTYPE_HVM &&
- input->bus == VIR_DOMAIN_INPUT_BUS_PS2 &&
- (input->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ||
- input->type == VIR_DOMAIN_INPUT_TYPE_KBD)) ||
- (def->os.type == VIR_DOMAIN_OSTYPE_XEN &&
- input->bus == VIR_DOMAIN_INPUT_BUS_XEN &&
- (input->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ||
- input->type == VIR_DOMAIN_INPUT_TYPE_KBD)) ||
- (def->os.type == VIR_DOMAIN_OSTYPE_EXE &&
- (def->virtType == VIR_DOMAIN_VIRT_VZ ||
- def->virtType == VIR_DOMAIN_VIRT_PARALLELS) &&
- input->bus == VIR_DOMAIN_INPUT_BUS_PARALLELS &&
- (input->type == VIR_DOMAIN_INPUT_TYPE_MOUSE ||
- input->type == VIR_DOMAIN_INPUT_TYPE_KBD))) {
- virDomainInputDefFree(input);
- continue;
- }
-
def->inputs[def->ninputs++] = input;
}
VIR_FREE(nodes);
@@ -15956,29 +15935,6 @@ virDomainDefParseXML(xmlDocPtr xml,
}
VIR_FREE(nodes);
- /* If graphics are enabled, there's an implicit PS2 mouse */
- if (def->ngraphics > 0 &&
- (ARCH_IS_X86(def->os.arch) || def->os.arch == VIR_ARCH_NONE)) {
- int input_bus = VIR_DOMAIN_INPUT_BUS_XEN;
-
- if (def->os.type == VIR_DOMAIN_OSTYPE_HVM)
- input_bus = VIR_DOMAIN_INPUT_BUS_PS2;
- if (def->os.type == VIR_DOMAIN_OSTYPE_EXE &&
- (def->virtType == VIR_DOMAIN_VIRT_VZ ||
- def->virtType == VIR_DOMAIN_VIRT_PARALLELS))
- input_bus = VIR_DOMAIN_INPUT_BUS_PARALLELS;
-
- if (virDomainDefMaybeAddInput(def,
- VIR_DOMAIN_INPUT_TYPE_MOUSE,
- input_bus) < 0)
- goto error;
-
- if (virDomainDefMaybeAddInput(def,
- VIR_DOMAIN_INPUT_TYPE_KBD,
- input_bus) < 0)
- goto error;
- }
-
/* analysis of the sound devices */
if ((n = virXPathNodeSet("./devices/sound", ctxt, &nodes)) < 0)
goto error;
@@ -22216,11 +22172,10 @@ virDomainDefFormatInternal(virDomainDefPtr def,
if (virDomainChrDefFormat(buf, def->channels[n], flags) < 0)
goto error;
- for (n = 0; n < def->ninputs; n++)
- if ((def->inputs[n]->bus == VIR_DOMAIN_INPUT_BUS_USB ||
- def->inputs[n]->bus == VIR_DOMAIN_INPUT_BUS_VIRTIO) &&
- virDomainInputDefFormat(buf, def->inputs[n], flags) < 0)
+ for (n = 0; n < def->ninputs; n++) {
+ if (virDomainInputDefFormat(buf, def->inputs[n], flags) < 0)
goto error;
+ }
if (def->tpm) {
if (virDomainTPMDefFormat(buf, def->tpm, flags) < 0)
@@ -22228,32 +22183,6 @@ virDomainDefFormatInternal(virDomainDefPtr def,
}
if (def->ngraphics > 0) {
- /* If graphics is enabled, add the implicit mouse/keyboard */
- if ((ARCH_IS_X86(def->os.arch)) || def->os.arch == VIR_ARCH_NONE) {
- virDomainInputDef autoInput = {
- .type = VIR_DOMAIN_INPUT_TYPE_MOUSE,
- .info = { .alias = NULL },
- };
-
- if (def->os.type == VIR_DOMAIN_OSTYPE_HVM)
- autoInput.bus = VIR_DOMAIN_INPUT_BUS_PS2;
- else if (def->os.type == VIR_DOMAIN_OSTYPE_EXE &&
- (def->virtType == VIR_DOMAIN_VIRT_VZ ||
- def->virtType == VIR_DOMAIN_VIRT_PARALLELS))
- autoInput.bus = VIR_DOMAIN_INPUT_BUS_PARALLELS;
- else
- autoInput.bus = VIR_DOMAIN_INPUT_BUS_XEN;
-
- if (virDomainInputDefFormat(buf, &autoInput, flags) < 0)
- goto error;
-
- if (!(flags & VIR_DOMAIN_DEF_FORMAT_MIGRATABLE)) {
- autoInput.type = VIR_DOMAIN_INPUT_TYPE_KBD;
- if (virDomainInputDefFormat(buf, &autoInput, flags) < 0)
- goto error;
- }
- }
-
for (n = 0; n < def->ngraphics; n++)
if (virDomainGraphicsDefFormat(buf, def->graphics[n], flags) < 0)
goto error;
diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
index c86dbbd..1113868 100644
--- a/src/libxl/libxl_domain.c
+++ b/src/libxl/libxl_domain.c
@@ -35,6 +35,7 @@
#include "virstring.h"
#include "virtime.h"
#include "locking/domain_lock.h"
+#include "xenconfig/xen_common.h"
#define VIR_FROM_THIS VIR_FROM_LIBXL
@@ -367,6 +368,10 @@ libxlDomainDefPostParse(virDomainDefPtr def,
def->consoles[0] = chrdef;
}
+ /* add implicit input devices */
+ if (xenDomainDefAddImplicitInputDevice(def) < 0)
+ return -1;
+
/* memory hotplug tunables are not supported by this driver */
if (virDomainDefCheckUnsupportedMemoryHotplug(def) < 0)
return -1;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 6f19d49..245adcc 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1026,6 +1026,25 @@ virDomainXMLNamespace virQEMUDriverDomainXMLNamespace = {
static int
+qemuDomainDefAddImplicitInputDevice(virDomainDef *def)
+{
+ if (ARCH_IS_X86(def->os.arch)) {
+ if (virDomainDefMaybeAddInput(def,
+ VIR_DOMAIN_INPUT_TYPE_MOUSE,
+ VIR_DOMAIN_INPUT_BUS_PS2) < 0)
+ return -1;
+
+ if (virDomainDefMaybeAddInput(def,
+ VIR_DOMAIN_INPUT_TYPE_KBD,
+ VIR_DOMAIN_INPUT_BUS_PS2) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int
qemuDomainDefPostParse(virDomainDefPtr def,
virCapsPtr caps,
void *opaque)
@@ -1053,6 +1072,9 @@ qemuDomainDefPostParse(virDomainDefPtr def,
!(def->emulator = virDomainDefGetDefaultEmulator(def, caps)))
return ret;
+ /* add implicit input devices */
+ if (qemuDomainDefAddImplicitInputDevice(def) < 0)
+ return ret;
qemuCaps = virQEMUCapsCacheLookup(driver->qemuCapsCache, def->emulator);
diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index 285a553..da7c8f9 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -46,6 +46,7 @@
#include "xen_sxpr.h"
#include "xen_xm.h"
+#include "xen_common.h"
#include "xen_hypervisor.h"
#include "xend_internal.h"
#include "xs_internal.h"
@@ -391,6 +392,10 @@ xenDomainDefPostParse(virDomainDefPtr def,
def->memballoon = memballoon;
}
+ /* add implicit input device */
+ if (xenDomainDefAddImplicitInputDevice(def) <0)
+ return -1;
+
/* memory hotplug tunables are not supported by this driver */
if (virDomainDefCheckUnsupportedMemoryHotplug(def) < 0)
return -1;
diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c
index e4e9936..0453cac 100644
--- a/src/xenapi/xenapi_driver.c
+++ b/src/xenapi/xenapi_driver.c
@@ -39,6 +39,7 @@
#include "xenapi_driver_private.h"
#include "xenapi_utils.h"
#include "virstring.h"
+#include "xen_common.h"
#define VIR_FROM_THIS VIR_FROM_XENAPI
@@ -77,6 +78,10 @@ xenapiDomainDefPostParse(virDomainDefPtr def,
virCapsPtr caps ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
+ /* add implicit input device */
+ if (xenDomainDefAddImplicitInputDevice(def) < 0)
+ return -1;
+
/* memory hotplug tunables are not supported by this driver */
if (virDomainDefCheckUnsupportedMemoryHotplug(def) < 0)
return -1;
diff --git a/src/xenconfig/xen_common.c b/src/xenconfig/xen_common.c
index 7e9c7e5..7291c31 100644
--- a/src/xenconfig/xen_common.c
+++ b/src/xenconfig/xen_common.c
@@ -1869,3 +1869,25 @@ xenFormatConfigCommon(virConfPtr conf,
return 0;
}
+
+
+int
+xenDomainDefAddImplicitInputDevice(virDomainDefPtr def)
+{
+ virDomainInputBus implicitInputBus = VIR_DOMAIN_INPUT_BUS_XEN;
+
+ if (def->os.type == VIR_DOMAIN_OSTYPE_HVM)
+ implicitInputBus = VIR_DOMAIN_INPUT_BUS_PS2;
+
+ if (virDomainDefMaybeAddInput(def,
+ VIR_DOMAIN_INPUT_TYPE_MOUSE,
+ implicitInputBus) < 0)
+ return -1;
+
+ if (virDomainDefMaybeAddInput(def,
+ VIR_DOMAIN_INPUT_TYPE_KBD,
+ implicitInputBus) < 0)
+ return -1;
+
+ return 0;
+}
diff --git a/src/xenconfig/xen_common.h b/src/xenconfig/xen_common.h
index 0116703..0207cf7 100644
--- a/src/xenconfig/xen_common.h
+++ b/src/xenconfig/xen_common.h
@@ -62,4 +62,6 @@ int xenFormatConfigCommon(virConfPtr conf,
virConnectPtr conn,
int xendConfigVersion);
+int xenDomainDefAddImplicitInputDevice(virDomainDefPtr def);
+
#endif /* __VIR_XEN_COMMON_H__ */
--
2.6.3
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