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interface: allow opening with interface:///system and interface:///session URIs
Allow the possibility of opening a connection to only the interface driver, by defining interface:///system and interface:///session URIs and registering a fake hypervisor driver that supports them. The hypervisor drivers can now directly open a interface driver connection at time of need, instead of having to pass around a virConnectPtr through many functions. This will facilitate the later change to support separate daemons for each driver. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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@ -46,6 +46,7 @@ typedef struct
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{
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{
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virObjectLockable parent;
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virObjectLockable parent;
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struct netcf *netcf;
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struct netcf *netcf;
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bool privileged;
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} virNetcfDriverState, *virNetcfDriverStatePtr;
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} virNetcfDriverState, *virNetcfDriverStatePtr;
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static virClassPtr virNetcfDriverStateClass;
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static virClassPtr virNetcfDriverStateClass;
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@ -78,7 +79,7 @@ virNetcfDriverStateDispose(void *obj)
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static int
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static int
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netcfStateInitialize(bool privileged ATTRIBUTE_UNUSED,
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netcfStateInitialize(bool privileged,
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virStateInhibitCallback callback ATTRIBUTE_UNUSED,
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virStateInhibitCallback callback ATTRIBUTE_UNUSED,
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void *opaque ATTRIBUTE_UNUSED)
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void *opaque ATTRIBUTE_UNUSED)
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{
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{
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@ -88,6 +89,8 @@ netcfStateInitialize(bool privileged ATTRIBUTE_UNUSED,
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if (!(driver = virObjectLockableNew(virNetcfDriverStateClass)))
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if (!(driver = virObjectLockableNew(virNetcfDriverStateClass)))
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return -1;
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return -1;
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driver->privileged = privileged;
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/* open netcf */
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/* open netcf */
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if (ncf_init(&driver->netcf, NULL) != 0) {
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if (ncf_init(&driver->netcf, NULL) != 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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@ -148,6 +151,81 @@ netcfStateReload(void)
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}
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}
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static virDrvOpenStatus
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netcfConnectOpen(virConnectPtr conn,
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virConnectAuthPtr auth ATTRIBUTE_UNUSED,
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virConfPtr conf ATTRIBUTE_UNUSED,
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unsigned int flags)
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{
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virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR);
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/* Verify uri was specified */
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if (conn->uri == NULL) {
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/* Only hypervisor drivers are permitted to auto-open on NULL uri */
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return VIR_DRV_OPEN_DECLINED;
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} else {
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if (STRNEQ_NULLABLE(conn->uri->scheme, "interface"))
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return VIR_DRV_OPEN_DECLINED;
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/* Leave for remote driver */
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if (conn->uri->server != NULL)
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return VIR_DRV_OPEN_DECLINED;
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if (driver == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("interface state driver is not active"));
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return VIR_DRV_OPEN_ERROR;
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}
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if (driver->privileged) {
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if (STRNEQ(conn->uri->path, "/system")) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected interface URI path '%s', try interface:///system"),
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conn->uri->path);
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return VIR_DRV_OPEN_ERROR;
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}
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} else {
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if (STRNEQ(conn->uri->path, "/session")) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected interface URI path '%s', try interface:///session"),
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conn->uri->path);
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return VIR_DRV_OPEN_ERROR;
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}
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}
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}
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if (virConnectOpenEnsureACL(conn) < 0)
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return VIR_DRV_OPEN_ERROR;
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return VIR_DRV_OPEN_SUCCESS;
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}
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static int netcfConnectClose(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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static int netcfConnectIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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/* Trivially secure, since always inside the daemon */
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return 1;
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}
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static int netcfConnectIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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/* Not encrypted, but remote driver takes care of that */
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return 0;
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}
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static int netcfConnectIsAlive(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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return 1;
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}
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/*
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/*
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* Get a minimal virInterfaceDef containing enough metadata
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* Get a minimal virInterfaceDef containing enough metadata
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* for access control checks to be performed. Currently
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* for access control checks to be performed. Currently
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@ -1134,6 +1212,23 @@ static virInterfaceDriver interfaceDriver = {
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#endif /* HAVE_NETCF_TRANSACTIONS */
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#endif /* HAVE_NETCF_TRANSACTIONS */
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};
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};
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static virHypervisorDriver interfaceHypervisorDriver = {
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.name = "interface",
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.connectOpen = netcfConnectOpen, /* 4.1.0 */
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.connectClose = netcfConnectClose, /* 4.1.0 */
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.connectIsEncrypted = netcfConnectIsEncrypted, /* 4.1.0 */
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.connectIsSecure = netcfConnectIsSecure, /* 4.1.0 */
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.connectIsAlive = netcfConnectIsAlive, /* 4.1.0 */
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};
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static virConnectDriver interfaceConnectDriver = {
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.hypervisorDriver = &interfaceHypervisorDriver,
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.interfaceDriver = &interfaceDriver,
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};
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static virStateDriver interfaceStateDriver = {
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static virStateDriver interfaceStateDriver = {
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.name = INTERFACE_DRIVER_NAME,
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.name = INTERFACE_DRIVER_NAME,
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.stateInitialize = netcfStateInitialize,
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.stateInitialize = netcfStateInitialize,
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@ -1143,6 +1238,8 @@ static virStateDriver interfaceStateDriver = {
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int netcfIfaceRegister(void)
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int netcfIfaceRegister(void)
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{
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{
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if (virRegisterConnectDriver(&interfaceConnectDriver, false) < 0)
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return -1;
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if (virSetSharedInterfaceDriver(&interfaceDriver) < 0)
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if (virSetSharedInterfaceDriver(&interfaceDriver) < 0)
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return -1;
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return -1;
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if (virRegisterStateDriver(&interfaceStateDriver) < 0)
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if (virRegisterStateDriver(&interfaceStateDriver) < 0)
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@ -41,6 +41,7 @@
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struct udev_iface_driver {
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struct udev_iface_driver {
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struct udev *udev;
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struct udev *udev;
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bool privileged;
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};
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};
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typedef enum {
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typedef enum {
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@ -1158,7 +1159,7 @@ udevInterfaceIsActive(virInterfacePtr ifinfo)
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static int
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static int
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udevStateInitialize(bool privileged ATTRIBUTE_UNUSED,
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udevStateInitialize(bool privileged,
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virStateInhibitCallback callback ATTRIBUTE_UNUSED,
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virStateInhibitCallback callback ATTRIBUTE_UNUSED,
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void *opaque ATTRIBUTE_UNUSED)
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void *opaque ATTRIBUTE_UNUSED)
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{
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{
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@ -1173,6 +1174,7 @@ udevStateInitialize(bool privileged ATTRIBUTE_UNUSED,
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_("failed to create udev context"));
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_("failed to create udev context"));
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goto cleanup;
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goto cleanup;
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}
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}
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driver->privileged = privileged;
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ret = 0;
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ret = 0;
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@ -1193,6 +1195,81 @@ udevStateCleanup(void)
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}
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}
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static virDrvOpenStatus
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udevConnectOpen(virConnectPtr conn,
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virConnectAuthPtr auth ATTRIBUTE_UNUSED,
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virConfPtr conf ATTRIBUTE_UNUSED,
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unsigned int flags)
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{
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virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR);
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/* Verify uri was specified */
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if (conn->uri == NULL) {
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/* Only hypervisor drivers are permitted to auto-open on NULL uri */
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return VIR_DRV_OPEN_DECLINED;
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} else {
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if (STRNEQ_NULLABLE(conn->uri->scheme, "interface"))
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return VIR_DRV_OPEN_DECLINED;
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/* Leave for remote driver */
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if (conn->uri->server != NULL)
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return VIR_DRV_OPEN_DECLINED;
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if (driver == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("interface state driver is not active"));
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return VIR_DRV_OPEN_ERROR;
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}
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if (driver->privileged) {
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if (STRNEQ(conn->uri->path, "/system")) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected interface URI path '%s', try interface:///system"),
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conn->uri->path);
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return VIR_DRV_OPEN_ERROR;
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}
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} else {
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if (STRNEQ(conn->uri->path, "/session")) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("unexpected interface URI path '%s', try interface:///session"),
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conn->uri->path);
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return VIR_DRV_OPEN_ERROR;
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}
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}
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}
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if (virConnectOpenEnsureACL(conn) < 0)
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return VIR_DRV_OPEN_ERROR;
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return VIR_DRV_OPEN_SUCCESS;
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}
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static int udevConnectClose(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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static int udevConnectIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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/* Trivially secure, since always inside the daemon */
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return 1;
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}
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static int udevConnectIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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/* Not encrypted, but remote driver takes care of that */
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return 0;
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}
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static int udevConnectIsAlive(virConnectPtr conn ATTRIBUTE_UNUSED)
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{
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return 1;
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}
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static virInterfaceDriver udevIfaceDriver = {
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static virInterfaceDriver udevIfaceDriver = {
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.name = "udev",
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.name = "udev",
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.connectNumOfInterfaces = udevConnectNumOfInterfaces, /* 1.0.0 */
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.connectNumOfInterfaces = udevConnectNumOfInterfaces, /* 1.0.0 */
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@ -1206,6 +1283,23 @@ static virInterfaceDriver udevIfaceDriver = {
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.interfaceGetXMLDesc = udevInterfaceGetXMLDesc, /* 1.0.0 */
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.interfaceGetXMLDesc = udevInterfaceGetXMLDesc, /* 1.0.0 */
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};
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};
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static virHypervisorDriver udevHypervisorDriver = {
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.name = "interface",
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.connectOpen = udevConnectOpen, /* 4.1.0 */
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.connectClose = udevConnectClose, /* 4.1.0 */
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.connectIsEncrypted = udevConnectIsEncrypted, /* 4.1.0 */
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.connectIsSecure = udevConnectIsSecure, /* 4.1.0 */
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.connectIsAlive = udevConnectIsAlive, /* 4.1.0 */
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};
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static virConnectDriver udevConnectDriver = {
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.hypervisorDriver = &udevHypervisorDriver,
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.interfaceDriver = &udevIfaceDriver,
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};
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static virStateDriver interfaceStateDriver = {
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static virStateDriver interfaceStateDriver = {
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.name = "udev",
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.name = "udev",
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.stateInitialize = udevStateInitialize,
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.stateInitialize = udevStateInitialize,
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@ -1215,6 +1309,8 @@ static virStateDriver interfaceStateDriver = {
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int
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int
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udevIfaceRegister(void)
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udevIfaceRegister(void)
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{
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{
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if (virRegisterConnectDriver(&udevConnectDriver, false) < 0)
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return -1;
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if (virSetSharedInterfaceDriver(&udevIfaceDriver) < 0) {
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if (virSetSharedInterfaceDriver(&udevIfaceDriver) < 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("failed to register udev interface driver"));
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_("failed to register udev interface driver"));
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