[libvirt] [PATCH 1/7] lib: add virDomainGetGuestInfo()
Jonathon Jongsma
jjongsma at redhat.com
Thu Aug 1 13:37:04 UTC 2019
This API is intended to aggregate several guest agent information
queries and is ispired by stats API virDomainListGetStats(). It is
anticipated that this information will be provided by a guest agent
running within the domain.
Signed-off-by: Jonathon Jongsma <jjongsma at redhat.com>
---
include/libvirt/libvirt-domain.h | 13 ++++
src/driver-hypervisor.h | 8 +++
src/libvirt-domain.c | 105 +++++++++++++++++++++++++++++++
src/libvirt_public.syms | 1 +
4 files changed, 127 insertions(+)
diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index f160ee88b5..93e0d36ff9 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -4902,4 +4902,17 @@ int virDomainGetLaunchSecurityInfo(virDomainPtr domain,
int *nparams,
unsigned int flags);
+typedef enum {
+ VIR_DOMAIN_GUEST_INFO_USERS = (1 << 0), /* return active users */
+ VIR_DOMAIN_GUEST_INFO_OS = (1 << 1), /* return OS information */
+ VIR_DOMAIN_GUEST_INFO_TIMEZONE = (1 << 2), /* return timezone information */
+ VIR_DOMAIN_GUEST_INFO_HOSTNAME = (1 << 3), /* return hostname information */
+} virDomainGuestInfoTypes;
+
+int virDomainGetGuestInfo(virDomainPtr domain,
+ unsigned int types,
+ virTypedParameterPtr *params,
+ int *nparams,
+ unsigned int flags);
+
#endif /* LIBVIRT_DOMAIN_H */
diff --git a/src/driver-hypervisor.h b/src/driver-hypervisor.h
index c1632ae4c6..58eb731e85 100644
--- a/src/driver-hypervisor.h
+++ b/src/driver-hypervisor.h
@@ -1359,6 +1359,13 @@ typedef int
(*virDrvDomainCheckpointDelete)(virDomainCheckpointPtr checkpoint,
unsigned int flags);
+typedef int
+(*virDrvDomainGetGuestInfo)(virDomainPtr domain,
+ unsigned int types,
+ virTypedParameterPtr *params,
+ int *nparams,
+ unsigned int flags);
+
typedef struct _virHypervisorDriver virHypervisorDriver;
typedef virHypervisorDriver *virHypervisorDriverPtr;
@@ -1617,4 +1624,5 @@ struct _virHypervisorDriver {
virDrvDomainCheckpointLookupByName domainCheckpointLookupByName;
virDrvDomainCheckpointGetParent domainCheckpointGetParent;
virDrvDomainCheckpointDelete domainCheckpointDelete;
+ virDrvDomainGetGuestInfo domainGetGuestInfo;
};
diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index 2fe9bb8e91..7cd17f346d 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -12212,6 +12212,111 @@ virDomainSetVcpu(virDomainPtr domain,
return -1;
}
+/**
+ * virDomainGetGuestInfo:
+ * @domain: pointer to domain object
+ * @types: types of information to return, binary-OR of virDomainGuestInfoTypes
+ * @params: location to store the guest info parameters
+ * @nparams: number of items in @params
+ * @flags: currently unused, set to 0
+ *
+ * Queries the guest agent for the various information about the guest system.
+ * The reported data depends on the guest agent implementation. the information
+ * is returned as an array of typed parameters containing the individual
+ * parameters. The parameter name for each information field consists of a
+ * dot-separated strign containing the name of the requested group followed by
+ * a group-specific description of the statistic value.
+ *
+ * The information groups are enabled using the @types parameter which is a
+ * binary-OR of enum virDomainGuestInfoTypes. The following groups are available
+ * (although not necessarily implemented for each hypervisor):
+ *
+ * VIR_DOMAIN_GUEST_INFO_USERS:
+ * returns information about users that are currently logged in within the
+ * guest domain. The typed parameter keys are in this format:
+ *
+ * "users.count" - the number of active users on this domain as an
+ * unsigned int
+ * "users.<num>.name - username of the user as a string
+ * "users.<num>.domain - domain of the user as a string (may only be
+ * present on certain guest types)
+ * "users.<num>.login_time - the login time of a user in milliseconds
+ * since the epoch as unsigned long long
+ *
+ * VIR_DOMAIN_GUEST_INFO_OS:
+ * Return information about the operating system running within the guest. The
+ * typed parameter keys are in this format:
+ *
+ * "os.id" - a string identifying the operating system
+ * "os.name" - the name of the operating system, suitable for presentation
+ * to a user, as a string
+ * "os.pretty-name" - a pretty name for the operating system, suitable for
+ * presentation to a user, as a string
+ * "os.version" - the version of the operating system suitable for
+ * presentation to a user, as a string
+ * "os.version-id" - the version id of the operating system suitable for
+ * processing by scripts, as a string
+ * "os.kernel-release" - the release of the operating system kernel, as a
+ * string
+ * "os.kernel-version" - the version of the operating system kernel, as a
+ * string
+ * "os.machine" - the machine hardware name as a string
+ * "os.variant" - a specific variant or edition of the operating system
+ * suitable for presentation to a user, as a string
+ * "os.variant-id" - the id for a specific variant or edition of the
+ * operating system, as a string
+ *
+ * VIR_DOMAIN_GUEST_INFO_TIMEZONE:
+ * Returns information about the timezone within the domain. The typed
+ * parameter keys are in this format:
+ *
+ * "timezone.name" - the name of the timezone as a string
+ * "timezone.offset" - the offset to UTC in seconds as an int
+ *
+ * VIR_DOMAIN_GUEST_INFO_FILESYSTEM:
+ * FIXME
+ *
+ * Using 0 for @types returns all information groups supported by the given
+ * hypervisor.
+ *
+ * This API requires the VM to run. The caller is responsible for calling
+ * virTypedParamsFree to free memory returned in @params.
+ *
+ * Returns 0 on success, -1 on error.
+ */
+int virDomainGetGuestInfo(virDomainPtr domain,
+ unsigned int types,
+ virTypedParameterPtr *params,
+ int *nparams,
+ unsigned int flags)
+{
+ VIR_DOMAIN_DEBUG(domain, "types=%u, params=%p, nparams=%p, flags=0x%x",
+ types, params, nparams, flags);
+
+ virResetLastError();
+
+ virCheckDomainReturn(domain, -1);
+ virCheckReadOnlyGoto(domain->conn->flags, error);
+
+ virCheckNonNullArgGoto(params, error);
+ virCheckNonNullArgGoto(nparams, error);
+
+ if (domain->conn->driver->domainGetGuestInfo) {
+ int ret;
+ ret = domain->conn->driver->domainGetGuestInfo(domain, types,
+ params, nparams, flags);
+
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virReportUnsupportedError();
+
+ error:
+ virDispatchError(domain->conn);
+ return -1;
+}
/**
* virDomainSetBlockThreshold:
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index 54256b6317..e196fd11d9 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -850,6 +850,7 @@ LIBVIRT_5.6.0 {
virDomainCheckpointLookupByName;
virDomainCheckpointRef;
virDomainListAllCheckpoints;
+ virDomainGetGuestInfo;
} LIBVIRT_5.5.0;
# .... define new API here using predicted next version number ....
--
2.21.0
More information about the libvir-list
mailing list