[libvirt] [PATCH v7 10/12] conf: Add support for choosing emulation of a TPM 2
Stefan Berger
stefanb at linux.vnet.ibm.com
Thu May 24 13:02:43 UTC 2018
This patch extends the TPM's device XML with TPM 2 support. This only works
for the emulator type backend and looks as follows:
<tpm model='tpm-tis'>
<backend type='emulator' version='2'/>
</tpm>
The swtpm process now has --tpm2 as an additional parameter:
system_u:system_r:svirt_t:s0:c597,c632 tss 18477 11.8 0.0 28364 3868 ? Rs 11:13 13:50 /usr/bin/swtpm socket --daemon --ctrl type=unixio,path=/var/run/libvirt/qemu/swtpm/testvm-swtpm.sock,mode=0660 --tpmstate dir=/var/lib/libvirt/swtpm/testvm/tpm2,mode=0640 --log file=/var/log/swtpm/libvirt/qemu/testvm-swtpm.log --tpm2 --pid file=/var/run/libvirt/qemu/swtpm/testvm-swtpm.pid
The version of the TPM can be changed and the state of the TPM is preserved.
Signed-off-by: Stefan Berger <stefanb at linux.vnet.ibm.com>
Reviewed-by: John Ferlan <jferlan at redhat.com>
---
docs/formatdomain.html.in | 15 ++++++-
docs/schemas/domaincommon.rng | 12 ++++++
src/conf/domain_conf.c | 40 ++++++++++++++++--
src/conf/domain_conf.h | 9 ++++
src/qemu/qemu_tpm.c | 49 +++++++++++++++++++---
.../tpm-emulator-tpm2.x86_64-latest.args | 33 +++++++++++++++
tests/qemuxml2argvdata/tpm-emulator-tpm2.xml | 30 +++++++++++++
tests/qemuxml2argvtest.c | 1 +
tests/qemuxml2xmloutdata/tpm-emulator-tpm2.xml | 34 +++++++++++++++
9 files changed, 214 insertions(+), 9 deletions(-)
create mode 100644 tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args
create mode 100644 tests/qemuxml2argvdata/tpm-emulator-tpm2.xml
create mode 100644 tests/qemuxml2xmloutdata/tpm-emulator-tpm2.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index ab7774ef6a..abe7986ad1 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -7728,7 +7728,7 @@ qemu-kvm -net nic,model=? /dev/null
...
<devices>
<tpm model='tpm-tis'>
- <backend type='emulator'>
+ <backend type='emulator' version='2'>
</backend>
</tpm>
</devices>
@@ -7778,6 +7778,19 @@ qemu-kvm -net nic,model=? /dev/null
</dd>
</dl>
</dd>
+ <dt><code>version</code></dt>
+ <dd>
+ <p>
+ The <code>version</code> attribute indicates the version
+ of the TPM. By default a TPM 1.2 is created. This attribute
+ only works with the <code>emulator</code> backend. The following
+ versions are supported:
+ </p>
+ <ul>
+ <li>'1.2' : creates a TPM 1.2</li>
+ <li>'2' : creates a TPM 2</li>
+ </ul>
+ </dd>
</dl>
<h4><a id="elementsNVRAM">NVRAM device</a></h4>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 65f4d8dd4a..7340051ccc 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4131,6 +4131,18 @@
</attribute>
</group>
</choice>
+ <choice>
+ <group>
+ <optional>
+ <attribute name="version">
+ <choice>
+ <value>1.2</value>
+ <value>2</value>
+ </choice>
+ </attribute>
+ </optional>
+ </group>
+ </choice>
</element>
</define>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 313143a05d..5bfba42ba6 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -868,6 +868,10 @@ VIR_ENUM_IMPL(virDomainTPMBackend, VIR_DOMAIN_TPM_TYPE_LAST,
"passthrough",
"emulator")
+VIR_ENUM_IMPL(virDomainTPMVersion, VIR_DOMAIN_TPM_VERSION_LAST,
+ "1.2",
+ "2")
+
VIR_ENUM_IMPL(virDomainIOMMUModel, VIR_DOMAIN_IOMMU_MODEL_LAST,
"intel")
@@ -12658,7 +12662,7 @@ virDomainSmartcardDefParseXML(virDomainXMLOptionPtr xmlopt,
* or like this:
*
* <tpm model='tpm-tis'>
- * <backend type='emulator'/>
+ * <backend type='emulator' version='2'/>
* </tpm>
*/
static virDomainTPMDefPtr
@@ -12671,6 +12675,7 @@ virDomainTPMDefParseXML(virDomainXMLOptionPtr xmlopt,
char *path = NULL;
char *model = NULL;
char *backend = NULL;
+ char *version = NULL;
virDomainTPMDefPtr def;
xmlNodePtr save = ctxt->node;
xmlNodePtr *backends = NULL;
@@ -12717,6 +12722,27 @@ virDomainTPMDefParseXML(virDomainXMLOptionPtr xmlopt,
goto error;
}
+ version = virXMLPropString(backends[0], "version");
+ if (!version)
+ def->version = VIR_DOMAIN_TPM_VERSION_1_2;
+ else
+ def->version = virDomainTPMVersionTypeFromString(version);
+ switch (def->version) {
+ case VIR_DOMAIN_TPM_VERSION_1_2:
+ /* only TIS available for emulator */
+ if (def->type == VIR_DOMAIN_TPM_TYPE_EMULATOR)
+ def->model = VIR_DOMAIN_TPM_MODEL_TIS;
+ break;
+ case VIR_DOMAIN_TPM_VERSION_2:
+ break;
+ case VIR_DOMAIN_TPM_VERSION_LAST:
+ default:
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Unsupported TPM version '%s'"),
+ version);
+ goto error;
+ }
+
switch (def->type) {
case VIR_DOMAIN_TPM_TYPE_PASSTHROUGH:
path = virXPathString("string(./backend/device/@path)", ctxt);
@@ -12741,6 +12767,7 @@ virDomainTPMDefParseXML(virDomainXMLOptionPtr xmlopt,
VIR_FREE(model);
VIR_FREE(backend);
VIR_FREE(backends);
+ VIR_FREE(version);
ctxt->node = save;
return def;
@@ -21837,6 +21864,12 @@ virDomainTPMDefCheckABIStability(virDomainTPMDefPtr src,
return false;
}
+ if (src->version != dst->version) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("Target TPM version doesn't match source"));
+ return false;
+ }
+
return virDomainDeviceInfoCheckABIStability(&src->info, &dst->info);
}
@@ -24939,8 +24972,9 @@ virDomainTPMDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, "<tpm model='%s'>\n",
virDomainTPMModelTypeToString(def->model));
virBufferAdjustIndent(buf, 2);
- virBufferAsprintf(buf, "<backend type='%s'",
- virDomainTPMBackendTypeToString(def->type));
+ virBufferAsprintf(buf, "<backend type='%s' version='%s'",
+ virDomainTPMBackendTypeToString(def->type),
+ virDomainTPMVersionTypeToString(def->version));
switch (def->type) {
case VIR_DOMAIN_TPM_TYPE_PASSTHROUGH:
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 2b1374251a..c3efd98751 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1291,12 +1291,20 @@ typedef enum {
VIR_DOMAIN_TPM_TYPE_LAST
} virDomainTPMBackendType;
+typedef enum {
+ VIR_DOMAIN_TPM_VERSION_1_2,
+ VIR_DOMAIN_TPM_VERSION_2,
+
+ VIR_DOMAIN_TPM_VERSION_LAST
+} virDomainTPMVersion;
+
# define VIR_DOMAIN_TPM_DEFAULT_DEVICE "/dev/tpm0"
struct _virDomainTPMDef {
virDomainTPMBackendType type;
virDomainDeviceInfo info;
virDomainTPMModel model;
+ virDomainTPMVersion version;
union {
struct {
virDomainChrSourceDef source;
@@ -3358,6 +3366,7 @@ VIR_ENUM_DECL(virDomainRNGModel)
VIR_ENUM_DECL(virDomainRNGBackend)
VIR_ENUM_DECL(virDomainTPMModel)
VIR_ENUM_DECL(virDomainTPMBackend)
+VIR_ENUM_DECL(virDomainTPMVersion)
VIR_ENUM_DECL(virDomainMemoryModel)
VIR_ENUM_DECL(virDomainMemoryBackingModel)
VIR_ENUM_DECL(virDomainMemorySource)
diff --git a/src/qemu/qemu_tpm.c b/src/qemu/qemu_tpm.c
index 6897bbf482..a693854b30 100644
--- a/src/qemu/qemu_tpm.c
+++ b/src/qemu/qemu_tpm.c
@@ -121,16 +121,31 @@ qemuTPMEmulatorInit(void)
*
* @swtpmStorageDir: directory for swtpm persistent state
* @uuid: The UUID of the VM for which to create the storage
+ * @tpmversion: version of the TPM
*
* Create the swtpm's storage path
*/
static char *
qemuTPMCreateEmulatorStoragePath(const char *swtpmStorageDir,
- const char *uuidstr)
+ const char *uuidstr,
+ virDomainTPMVersion tpmversion)
{
char *path = NULL;
+ const char *dir = "";
- ignore_value(virAsprintf(&path, "%s/%s/tpm1.2", swtpmStorageDir, uuidstr));
+ switch (tpmversion) {
+ case VIR_DOMAIN_TPM_VERSION_1_2:
+ dir = "tpm1.2";
+ break;
+ case VIR_DOMAIN_TPM_VERSION_2:
+ dir = "tpm2";
+ break;
+ case VIR_DOMAIN_TPM_VERSION_LAST:
+ return NULL;
+ }
+
+ ignore_value(virAsprintf(&path, "%s/%s/%s", swtpmStorageDir, uuidstr,
+ dir));
return path;
}
@@ -285,7 +300,8 @@ qemuTPMEmulatorInitPaths(virDomainTPMDefPtr tpm,
if (!tpm->data.emulator.storagepath &&
!(tpm->data.emulator.storagepath =
- qemuTPMCreateEmulatorStoragePath(swtpmStorageDir, uuidstr)))
+ qemuTPMCreateEmulatorStoragePath(swtpmStorageDir, uuidstr,
+ tpm->version)))
return -1;
return 0;
@@ -385,6 +401,7 @@ qemuTPMEmulatorPrepareHost(virDomainTPMDefPtr tpm,
* @swtpm_group: The group id to switch to
* @logfile: The file to write the log into; it must be writable
* for the user given by userid or 'tss'
+ * @tpmversion: The version of the TPM, either a TPM 1.2 or TPM 2
*
* Setup the external swtpm by creating endorsement key and
* certificates for it.
@@ -396,7 +413,8 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
bool privileged,
uid_t swtpm_user,
gid_t swtpm_group,
- const char *logfile)
+ const char *logfile,
+ const virDomainTPMVersion tpmversion)
{
virCommandPtr cmd = NULL;
int exitstatus;
@@ -421,6 +439,17 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
virCommandSetUID(cmd, swtpm_user);
virCommandSetGID(cmd, swtpm_group);
+ switch (tpmversion) {
+ case VIR_DOMAIN_TPM_VERSION_1_2:
+ break;
+ case VIR_DOMAIN_TPM_VERSION_2:
+ virCommandAddArgList(cmd, "--tpm2", NULL);
+ break;
+ case VIR_DOMAIN_TPM_VERSION_LAST:
+ break;
+ }
+
+
virCommandAddArgList(cmd,
"--tpm-state", storagepath,
"--vmid", vmid,
@@ -484,7 +513,7 @@ qemuTPMEmulatorBuildCommand(virDomainTPMDefPtr tpm,
if (created &&
qemuTPMEmulatorRunSetup(tpm->data.emulator.storagepath, vmname, vmuuid,
privileged, swtpm_user, swtpm_group,
- tpm->data.emulator.logfile) < 0)
+ tpm->data.emulator.logfile, tpm->version) < 0)
goto error;
unlink(tpm->data.emulator.source.data.nix.path);
@@ -509,6 +538,16 @@ qemuTPMEmulatorBuildCommand(virDomainTPMDefPtr tpm,
virCommandSetUID(cmd, swtpm_user);
virCommandSetGID(cmd, swtpm_group);
+ switch (tpm->version) {
+ case VIR_DOMAIN_TPM_VERSION_1_2:
+ break;
+ case VIR_DOMAIN_TPM_VERSION_2:
+ virCommandAddArg(cmd, "--tpm2");
+ break;
+ case VIR_DOMAIN_TPM_VERSION_LAST:
+ break;
+ }
+
return cmd;
error:
diff --git a/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args b/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args
new file mode 100644
index 0000000000..82b676f966
--- /dev/null
+++ b/tests/qemuxml2argvdata/tpm-emulator-tpm2.x86_64-latest.args
@@ -0,0 +1,33 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=TPM-VM,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-TPM-VM/master-key.aes \
+-machine pc-i440fx-2.12,accel=tcg,usb=off,dump-guest-core=off \
+-m 2048 \
+-realtime mlock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 11d7cd22-da89-3094-6212-079a48a309a1 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-TPM-VM/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot menu=on,strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-tpmdev emulator,id=tpm-tpm0,chardev=chrtpm \
+-chardev socket,id=chrtpm,path=/dev/test \
+-device tpm-tis,tpmdev=tpm-tpm0,id=tpm0 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
+resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/tpm-emulator-tpm2.xml b/tests/qemuxml2argvdata/tpm-emulator-tpm2.xml
new file mode 100644
index 0000000000..7546930d19
--- /dev/null
+++ b/tests/qemuxml2argvdata/tpm-emulator-tpm2.xml
@@ -0,0 +1,30 @@
+<domain type='qemu'>
+ <name>TPM-VM</name>
+ <uuid>11d7cd22-da89-3094-6212-079a48a309a1</uuid>
+ <memory unit='KiB'>2097152</memory>
+ <currentMemory unit='KiB'>512288</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc-i440fx-2.12'>hvm</type>
+ <boot dev='hd'/>
+ <bootmenu enable='yes'/>
+ </os>
+ <features>
+ <acpi/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-x86_64</emulator>
+ <controller type='usb' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <tpm model='tpm-tis'>
+ <backend type='emulator' version='2'/>
+ </tpm>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 36356dfbff..983458e32f 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2031,6 +2031,7 @@ mymain(void)
DO_TEST_PARSE_ERROR("tpm-no-backend-invalid",
QEMU_CAPS_DEVICE_TPM_PASSTHROUGH, QEMU_CAPS_DEVICE_TPM_TIS);
DO_TEST_CAPS_LATEST("tpm-emulator");
+ DO_TEST_CAPS_LATEST("tpm-emulator-tpm2");
DO_TEST_PARSE_ERROR("pci-domain-invalid", NONE);
DO_TEST_PARSE_ERROR("pci-bus-invalid", NONE);
diff --git a/tests/qemuxml2xmloutdata/tpm-emulator-tpm2.xml b/tests/qemuxml2xmloutdata/tpm-emulator-tpm2.xml
new file mode 100644
index 0000000000..eff55fc5df
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/tpm-emulator-tpm2.xml
@@ -0,0 +1,34 @@
+<domain type='qemu'>
+ <name>TPM-VM</name>
+ <uuid>11d7cd22-da89-3094-6212-079a48a309a1</uuid>
+ <memory unit='KiB'>2097152</memory>
+ <currentMemory unit='KiB'>512288</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc-i440fx-2.12'>hvm</type>
+ <boot dev='hd'/>
+ <bootmenu enable='yes'/>
+ </os>
+ <features>
+ <acpi/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-x86_64</emulator>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <tpm model='tpm-tis'>
+ <backend type='emulator' version='2'/>
+ </tpm>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
--
2.14.3
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