[libvirt] [PATCH v5 4/9] qemu: Add the ability to hotplug the TLS X.509 environment
John Ferlan
jferlan at redhat.com
Thu Aug 4 15:21:22 UTC 2016
If the incoming XML defined a path to a TLS X.509 certificate environment,
add the necessary 'tls-creds-x509' object to the VIR_DOMAIN_CHR_TYPE_TCP
character device.
Likewise, if the environment exists the hot unplug needs adjustment as
well. Note that all the return ret were changed to goto cleanup since
the cfg needs to be unref'd
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 2 +-
src/qemu/qemu_command.h | 8 ++++++
src/qemu/qemu_hotplug.c | 59 ++++++++++++++++++++++++++++++++++++++------
src/qemu/qemu_monitor_json.c | 9 +++++++
5 files changed, 71 insertions(+), 8 deletions(-)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index b2e905d..b25e219 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1091,6 +1091,7 @@ struct _virDomainChrSourceDef {
char *service;
bool listen;
int protocol;
+ bool tlscreds;
} tcp;
struct {
char *bindHost;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 33cc451..2295175 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -690,7 +690,7 @@ qemuBuildRBDSecinfoURI(virBufferPtr buf,
*
* Returns 0 on success, -1 on failure with error set.
*/
-static int
+int
qemuBuildTLSx509BackendProps(const char *tlspath,
bool listen,
bool verifypeer,
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index dcf9ba6..583f35d 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -60,10 +60,18 @@ virCommandPtr qemuBuildCommandLine(virQEMUDriverPtr driver,
const char *domainLibDir)
ATTRIBUTE_NONNULL(15);
+
/* Generate the object properties for a secret */
int qemuBuildSecretInfoProps(qemuDomainSecretInfoPtr secinfo,
virJSONValuePtr *propsret);
+/* Generate the object properties for a tls-creds-x509 */
+int qemuBuildTLSx509BackendProps(const char *tlspath,
+ bool listen,
+ bool verifypeer,
+ virQEMUCapsPtr qemuCaps,
+ virJSONValuePtr *propsret);
+
/* Generate '-device' string for chardev device */
int
qemuBuildChrDeviceStr(char **deviceStr,
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 00e4a75..013fbed 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1644,12 +1644,17 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
virDomainChrDefPtr chr)
{
int ret = -1, rc;
+ virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv = vm->privateData;
virErrorPtr orig_err;
virDomainDefPtr vmdef = vm->def;
char *devstr = NULL;
+ virDomainChrSourceDefPtr dev = &chr->source;
char *charAlias = NULL;
bool chardevAttached = false;
+ bool tlsobjAdded = false;
+ virJSONValuePtr tlsProps = NULL;
+ char *tlsAlias = NULL;
bool need_release = false;
if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL &&
@@ -1673,7 +1678,29 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
if (qemuDomainChrPreInsert(vmdef, chr) < 0)
goto cleanup;
+ if (cfg->chardevTLS) {
+ if (qemuBuildTLSx509BackendProps(cfg->chardevTLSx509certdir,
+ dev->data.tcp.listen,
+ cfg->chardevTLSx509verify,
+ priv->qemuCaps,
+ &tlsProps) < 0)
+ goto cleanup;
+
+ if (!(tlsAlias = qemuAliasTLSObjFromChardevAlias(chr->info.alias)))
+ goto cleanup;
+ dev->data.tcp.tlscreds = true;
+ }
+
qemuDomainObjEnterMonitor(driver, vm);
+ if (tlsAlias) {
+ rc = qemuMonitorAddObject(priv->mon, "tls-creds-x509",
+ tlsAlias, tlsProps);
+ tlsProps = NULL; /* qemuMonitorAddObject consumes */
+ if (rc < 0)
+ goto exit_monitor;
+ tlsobjAdded = true;
+ }
+
if (qemuMonitorAttachCharDev(priv->mon, charAlias, &chr->source) < 0)
goto exit_monitor;
chardevAttached = true;
@@ -1693,12 +1720,17 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
qemuDomainChrInsertPreAllocCleanup(vmdef, chr);
if (ret < 0 && need_release)
qemuDomainReleaseDeviceAddress(vm, &chr->info, NULL);
+ VIR_FREE(tlsAlias);
+ virJSONValueFree(tlsProps);
VIR_FREE(charAlias);
VIR_FREE(devstr);
+ virObjectUnref(cfg);
return ret;
exit_monitor:
orig_err = virSaveLastError();
+ if (tlsobjAdded)
+ ignore_value(qemuMonitorDelObject(priv->mon, tlsAlias));
/* detach associated chardev on error */
if (chardevAttached)
qemuMonitorDetachCharDev(priv->mon, charAlias);
@@ -4286,32 +4318,40 @@ int qemuDomainDetachChrDevice(virQEMUDriverPtr driver,
virDomainChrDefPtr chr)
{
int ret = -1;
+ virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDefPtr vmdef = vm->def;
virDomainChrDefPtr tmpChr;
+ char *objAlias = NULL;
char *devstr = NULL;
if (!(tmpChr = virDomainChrFind(vmdef, chr))) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("device not present in domain configuration"));
- return ret;
+ goto cleanup;
}
if (!tmpChr->info.alias && qemuAssignDeviceChrAlias(vmdef, tmpChr, -1) < 0)
- return ret;
+ goto cleanup;
sa_assert(tmpChr->info.alias);
+ if (cfg->chardevTLS &&
+ !(objAlias = qemuAliasTLSObjFromChardevAlias(tmpChr->info.alias)))
+ goto cleanup;
+
if (qemuBuildChrDeviceStr(&devstr, vmdef, chr, priv->qemuCaps) < 0)
- return ret;
+ goto cleanup;
qemuDomainMarkDeviceForRemoval(vm, &tmpChr->info);
qemuDomainObjEnterMonitor(driver, vm);
- if (devstr && qemuMonitorDelDevice(priv->mon, tmpChr->info.alias) < 0) {
- ignore_value(qemuDomainObjExitMonitor(driver, vm));
- goto cleanup;
- }
+ if (objAlias && qemuMonitorDelObject(priv->mon, objAlias) < 0)
+ goto exit_monitor;
+
+ if (devstr && qemuMonitorDelDevice(priv->mon, tmpChr->info.alias) < 0)
+ goto exit_monitor;
+
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto cleanup;
@@ -4323,7 +4363,12 @@ int qemuDomainDetachChrDevice(virQEMUDriverPtr driver,
cleanup:
qemuDomainResetDeviceRemoval(vm);
VIR_FREE(devstr);
+ virObjectUnref(cfg);
return ret;
+
+ exit_monitor:
+ ignore_value(qemuDomainObjExitMonitor(driver, vm));
+ goto cleanup;
}
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index d455adf..a081ae5 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -6137,6 +6137,7 @@ qemuMonitorJSONAttachCharDevCommand(const char *chrID,
virJSONValuePtr data = NULL;
virJSONValuePtr addr = NULL;
const char *backend_type = NULL;
+ char *tlsalias = NULL;
bool telnet;
if (!(backend = virJSONValueNewObject()) ||
@@ -6182,6 +6183,13 @@ qemuMonitorJSONAttachCharDevCommand(const char *chrID,
virJSONValueObjectAppendBoolean(data, "telnet", telnet) < 0 ||
virJSONValueObjectAppendBoolean(data, "server", chr->data.tcp.listen) < 0)
goto error;
+ if (chr->data.tcp.tlscreds) {
+ if (!(tlsalias = qemuAliasTLSObjFromChardevAlias(chrID)))
+ goto error;
+
+ if (virJSONValueObjectAppendString(data, "tls-creds", tlsalias) < 0)
+ goto error;
+ }
break;
case VIR_DOMAIN_CHR_TYPE_UDP:
@@ -6247,6 +6255,7 @@ qemuMonitorJSONAttachCharDevCommand(const char *chrID,
return ret;
error:
+ VIR_FREE(tlsalias);
virJSONValueFree(addr);
virJSONValueFree(data);
virJSONValueFree(backend);
--
2.7.4
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