Probe for QEMU's QMP TPM support by querying the lists of
supported TPM models (query-tpm-models) and backend types
(query-tpm-types).
The setting of the capability flags following the strings
returned from the commands above is only provided in the
patch where domain_conf.c gets TPM support due to dependencies
on functions only introduced there.
Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxxxxxxx>
---
src/libvirt_private.syms | 1
src/qemu/qemu_capabilities.c | 61 ++++++++++++++++++++++++++++
src/qemu/qemu_capabilities.h | 3 +
src/qemu/qemu_monitor.c | 44 ++++++++++++++++++++
src/qemu/qemu_monitor.h | 6 ++
src/qemu/qemu_monitor_json.c | 91 +++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_monitor_json.h | 8 +++
src/util/virutil.c | 14 ++++++
src/util/virutil.h | 3 +
9 files changed, 231 insertions(+)
Index: libvirt/src/qemu/qemu_capabilities.c
===================================================================
--- libvirt.orig/src/qemu/qemu_capabilities.c
+++ libvirt/src/qemu/qemu_capabilities.c
@@ -210,6 +210,8 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAS
"rng-random", /* 130 */
"rng-egd",
+ "tpm-passthrough",
+ "tpm-tis",
);
struct _virQEMUCaps {
Index: libvirt/src/qemu/qemu_capabilities.h
===================================================================
--- libvirt.orig/src/qemu/qemu_capabilities.h
+++ libvirt/src/qemu/qemu_capabilities.h
@@ -171,6 +171,8 @@ enum virQEMUCapsFlags {
QEMU_CAPS_OBJECT_RNG_RANDOM = 130, /* the rng-random backend for
virtio rng */
QEMU_CAPS_OBJECT_RNG_EGD = 131, /* EGD protocol daemon for rng */
+ QEMU_CAPS_DEVICE_TPM_PASSTHROUGH = 132, /* -tpmdev passthrough */
+ QEMU_CAPS_DEVICE_TPM_TIS = 133, /* -device tpm_tis */
QEMU_CAPS_LAST, /* this must always be the last item */
};
@@ -252,4 +254,5 @@ int virQEMUCapsParseDeviceStr(virQEMUCap
VIR_ENUM_DECL(virQEMUCaps);
bool virQEMUCapsUsedQMP(virQEMUCapsPtr qemuCaps);
+
#endif /* __QEMU_CAPABILITIES_H__*/
Index: libvirt/src/qemu/qemu_monitor.c
===================================================================
--- libvirt.orig/src/qemu/qemu_monitor.c
+++ libvirt/src/qemu/qemu_monitor.c
@@ -3522,3 +3522,47 @@ int qemuMonitorNBDServerStop(qemuMonitor
return qemuMonitorJSONNBDServerStop(mon);
}
+
+
+int qemuMonitorGetTPMModels(qemuMonitorPtr mon,
+ char ***tpmmodels)
+{
+ VIR_DEBUG("mon=%p tpmmodels=%p",
+ mon, tpmmodels);
+
+ if (!mon) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("monitor must not be NULL"));
+ return -1;
+ }
+
+ if (!mon->json) {
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+ _("JSON monitor is required"));
+ return -1;
+ }
+
+ return qemuMonitorJSONGetTPMModels(mon, tpmmodels);
+}
+
+
+int qemuMonitorGetTPMTypes(qemuMonitorPtr mon,
+ char ***tpmtypes)
+{
+ VIR_DEBUG("mon=%p tpmtypes=%p",
+ mon, tpmtypes);
+
+ if (!mon) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s",
+ _("monitor must not be NULL"));
+ return -1;
+ }
+
+ if (!mon->json) {
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
+ _("JSON monitor is required"));
+ return -1;
+ }
+
+ return qemuMonitorJSONGetTPMTypes(mon, tpmtypes);
+}
Index: libvirt/src/qemu/qemu_monitor.h
===================================================================
--- libvirt.orig/src/qemu/qemu_monitor.h
+++ libvirt/src/qemu/qemu_monitor.h
@@ -683,6 +683,12 @@ int qemuMonitorNBDServerAdd(qemuMonitorP
const char *deviceID,
bool writable);
int qemuMonitorNBDServerStop(qemuMonitorPtr);
+int qemuMonitorGetTPMModels(qemuMonitorPtr mon,
+ char ***tpmmodels);
+
+int qemuMonitorGetTPMTypes(qemuMonitorPtr mon,
+ char ***tpmtypes);
+
/**
* When running two dd process and using <> redirection, we need a
* shell that will not truncate files. These two strings serve that
Index: libvirt/src/qemu/qemu_monitor_json.c
===================================================================
--- libvirt.orig/src/qemu/qemu_monitor_json.c
+++ libvirt/src/qemu/qemu_monitor_json.c
@@ -4707,3 +4707,94 @@ qemuMonitorJSONNBDServerStop(qemuMonitor
virJSONValueFree(reply);
return ret;
}
+
+
+static int
+qemuMonitorJSONGetStringArray(qemuMonitorPtr mon, const char *qmpCmd,
+ char ***array)
+{
+ int ret;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+ virJSONValuePtr data;
+ char **list = NULL;
+ int n = 0;
+ size_t i;
+
+ *array = NULL;
+
+ if (!(cmd = qemuMonitorJSONMakeCommand(qmpCmd, NULL)))
+ return -1;
+
+ ret = qemuMonitorJSONCommand(mon, cmd, &reply);
+
+ if (ret == 0)
+ ret = qemuMonitorJSONCheckError(cmd, reply);
+
+ if (ret < 0)
+ goto cleanup;
+
+ ret = -1;
+
+ if (!(data = virJSONValueObjectGet(reply, "return"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("%s reply was missing return data"),
+ qmpCmd);
+ goto cleanup;
+ }
+
+ if ((n = virJSONValueArraySize(data)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("%s reply data was not an array"),
+ qmpCmd);
+ goto cleanup;
+ }
+
+ if (VIR_ALLOC_N(list, n) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ for (i = 0 ; i < n ; i++) {
+ virJSONValuePtr child = virJSONValueArrayGet(data, i);
+ const char *tmp;
+
+ if (!(tmp = virJSONValueGetString(child))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("%s array element does not contain data"),
+ qmpCmd);
+ goto cleanup;
+ }
+
+ if (!(list[i] = strdup(tmp))) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ }
+
+ ret = n;
+ *array = list;
+
+cleanup:
+ if (ret < 0 && list) {
+ for (i = 0 ; i < n ; i++)
+ VIR_FREE(list[i]);
+ VIR_FREE(list);
+ }
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+ return ret;
+}
+
+int qemuMonitorJSONGetTPMModels(qemuMonitorPtr mon,
+ char ***tpmmodels)
+{
+ return qemuMonitorJSONGetStringArray(mon, "query-tpm-models", tpmmodels);
+}
+
+
+int qemuMonitorJSONGetTPMTypes(qemuMonitorPtr mon,
+ char ***tpmtypes)
+{
+ return qemuMonitorJSONGetStringArray(mon, "query-tpm-types", tpmtypes);
+}
Index: libvirt/src/qemu/qemu_monitor_json.h
===================================================================
--- libvirt.orig/src/qemu/qemu_monitor_json.h
+++ libvirt/src/qemu/qemu_monitor_json.h
@@ -341,4 +341,12 @@ int qemuMonitorJSONNBDServerAdd(qemuMoni
const char *deviceID,
bool writable);
int qemuMonitorJSONNBDServerStop(qemuMonitorPtr mon);
+int qemuMonitorJSONGetTPMModels(qemuMonitorPtr mon,
+ char ***tpmmodels)
+ ATTRIBUTE_NONNULL(2);
+
+int qemuMonitorJSONGetTPMTypes(qemuMonitorPtr mon,
+ char ***tpmtypes)
+ ATTRIBUTE_NONNULL(2);
+
#endif /* QEMU_MONITOR_JSON_H */
Index: libvirt/src/libvirt_private.syms
===================================================================
--- libvirt.orig/src/libvirt_private.syms
+++ libvirt/src/libvirt_private.syms
@@ -1886,6 +1886,7 @@ virSetUIDGIDWithCaps;
virSkipSpaces;
virSkipSpacesAndBackslash;
virSkipSpacesBackwards;
+virStrArrayHasString;
virStrcpy;
virStrIsPrint;
virStrncpy;
Index: libvirt/src/util/virutil.c
===================================================================
--- libvirt.orig/src/util/virutil.c
+++ libvirt/src/util/virutil.c
@@ -3379,3 +3379,17 @@ cleanup:
VIR_FREE(buf);
return ret;
}
+
+
+bool
+virStrArrayHasString(char **strings, size_t n_strings, const char *needle)
+{
+ size_t i;
+
+ for (i = 0; i < n_strings; i++) {
+ if (STREQ(strings[i], needle))
+ return true;
+ }
+
+ return false;
+}
Index: libvirt/src/util/virutil.h
===================================================================
--- libvirt.orig/src/util/virutil.h
+++ libvirt/src/util/virutil.h
@@ -297,4 +297,7 @@ int virGetDeviceUnprivSGIO(const char *p
char * virGetUnprivSGIOSysfsPath(const char *path,
const char *sysfs_dir);
+bool virStrArrayHasString(char **strings, size_t n_strings,
+ const char *needle);
+
#endif /* __VIR_UTIL_H__ */
--
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