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Allow for a driver specific private data blob in virDomainObjPtr
The virDomainObjPtr object stores state about a running domain. This object is shared across all drivers so it is not appropriate to include driver specific state here. This patch adds the ability to request a blob of private data per domain object instance. The driver must provide a allocator & deallocator for this purpose THis patch abuses the virCapabilitiesPtr structure for storing the allocator/deallocator callbacks, since it is already being abused for other internal things relating to parsing. This should be moved out into a separate object at some point. * src/conf/capabilities.h: Add privateDataAllocFunc and privateDataFreeFunc fields * src/conf/domain_conf.c: Invoke the driver allocators / deallocators when creating/freeing virDomainObjPtr instances. * src/conf/domain_conf.h: Pass virCapsPtr into virDomainAssignDef to allow access to the driver specific allocator function * src/lxc/lxc_driver.c, src/opennebula/one_driver.c, src/openvz/openvz_driver.c, src/qemu/qemu_driver.c, src/test/test_driver.c, src/uml/uml_driver.c: Update for change in virDomainAssignDef contract
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530d4463ba
commit
3505790b85
@ -115,6 +115,8 @@ struct _virCaps {
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virCapsGuestPtr *guests;
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unsigned char macPrefix[VIR_MAC_PREFIX_BUFLEN];
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unsigned int emulatorRequired : 1;
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void *(*privateDataAllocFunc)(void);
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void (*privateDataFreeFunc)(void *);
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};
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@ -594,12 +594,16 @@ void virDomainObjFree(virDomainObjPtr dom)
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VIR_FREE(dom->vcpupids);
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if (dom->privateDataFreeFunc)
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(dom->privateDataFreeFunc)(dom->privateData);
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virMutexDestroy(&dom->lock);
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VIR_FREE(dom);
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}
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static virDomainObjPtr virDomainObjNew(virConnectPtr conn)
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static virDomainObjPtr virDomainObjNew(virConnectPtr conn,
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virCapsPtr caps)
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{
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virDomainObjPtr domain;
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@ -608,9 +612,19 @@ static virDomainObjPtr virDomainObjNew(virConnectPtr conn)
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return NULL;
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}
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if (caps->privateDataAllocFunc &&
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!(domain->privateData = (caps->privateDataAllocFunc)())) {
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virReportOOMError(conn);
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VIR_FREE(domain);
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return NULL;
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}
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domain->privateDataFreeFunc = caps->privateDataFreeFunc;
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if (virMutexInit(&domain->lock) < 0) {
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virDomainReportError(conn, VIR_ERR_INTERNAL_ERROR,
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"%s", _("cannot initialize mutex"));
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if (domain->privateDataFreeFunc)
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(domain->privateDataFreeFunc)(domain->privateData);
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VIR_FREE(domain);
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return NULL;
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}
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@ -624,6 +638,7 @@ static virDomainObjPtr virDomainObjNew(virConnectPtr conn)
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}
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virDomainObjPtr virDomainAssignDef(virConnectPtr conn,
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virCapsPtr caps,
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virDomainObjListPtr doms,
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const virDomainDefPtr def)
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{
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@ -643,7 +658,7 @@ virDomainObjPtr virDomainAssignDef(virConnectPtr conn,
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return domain;
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}
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if (!(domain = virDomainObjNew(conn)))
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if (!(domain = virDomainObjNew(conn, caps)))
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return NULL;
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domain->def = def;
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@ -3187,7 +3202,7 @@ static virDomainObjPtr virDomainObjParseXML(virConnectPtr conn,
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xmlNodePtr *nodes = NULL;
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int n, i;
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if (!(obj = virDomainObjNew(conn)))
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if (!(obj = virDomainObjNew(conn, caps)))
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return NULL;
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if (!(config = virXPathNode(conn, "./domain", ctxt))) {
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@ -4768,7 +4783,7 @@ virDomainObjPtr virDomainLoadConfig(virConnectPtr conn,
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newVM = 0;
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}
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if (!(dom = virDomainAssignDef(conn, doms, def)))
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if (!(dom = virDomainAssignDef(conn, caps, doms, def)))
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goto error;
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dom->autostart = autostart;
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@ -636,6 +636,9 @@ struct _virDomainObj {
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virDomainDefPtr def; /* The current definition */
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virDomainDefPtr newDef; /* New definition to activate at shutdown */
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void *privateData;
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void (*privateDataFreeFunc)(void *);
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};
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typedef struct _virDomainObjList virDomainObjList;
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@ -678,6 +681,7 @@ void virDomainDefFree(virDomainDefPtr vm);
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void virDomainObjFree(virDomainObjPtr vm);
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virDomainObjPtr virDomainAssignDef(virConnectPtr conn,
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virCapsPtr caps,
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virDomainObjListPtr doms,
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const virDomainDefPtr def);
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void virDomainRemoveInactive(virDomainObjListPtr doms,
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@ -315,7 +315,8 @@ static virDomainPtr lxcDomainDefine(virConnectPtr conn, const char *xml)
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goto cleanup;
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}
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if (!(vm = virDomainAssignDef(conn, &driver->domains, def)))
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if (!(vm = virDomainAssignDef(conn, driver->caps,
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&driver->domains, def)))
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goto cleanup;
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def = NULL;
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vm->persistent = 1;
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@ -1312,7 +1313,8 @@ lxcDomainCreateAndStart(virConnectPtr conn,
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}
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if (!(vm = virDomainAssignDef(conn, &driver->domains, def)))
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if (!(vm = virDomainAssignDef(conn, driver->caps,
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&driver->domains, def)))
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goto cleanup;
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def = NULL;
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@ -235,7 +235,8 @@ static virDomainPtr oneDomainDefine(virConnectPtr conn, const char *xml)
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VIR_DOMAIN_XML_INACTIVE)))
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goto return_point;
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if (!(vm = virDomainAssignDef(conn, &driver->domains, def))) {
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if (!(vm = virDomainAssignDef(conn, driver->caps,
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&driver->domains, def))) {
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virDomainDefFree(def);
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goto return_point;
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}
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@ -439,7 +440,8 @@ oneDomainCreateAndStart(virConnectPtr conn,
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goto return_point;
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}
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if (!(vm = virDomainAssignDef(conn, &driver->domains, def))) {
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if (!(vm = virDomainAssignDef(conn, driver->caps,
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&driver->domains, def))) {
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virDomainDefFree(def);
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goto return_point;
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}
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@ -774,7 +774,8 @@ openvzDomainDefineXML(virConnectPtr conn, const char *xml)
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vmdef->name);
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goto cleanup;
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}
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if (!(vm = virDomainAssignDef(conn, &driver->domains, vmdef)))
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if (!(vm = virDomainAssignDef(conn, driver->caps,
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&driver->domains, vmdef)))
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goto cleanup;
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vmdef = NULL;
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@ -841,7 +842,8 @@ openvzDomainCreateXML(virConnectPtr conn, const char *xml,
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vmdef->name);
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goto cleanup;
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}
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if (!(vm = virDomainAssignDef(conn, &driver->domains, vmdef)))
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if (!(vm = virDomainAssignDef(conn, driver->caps,
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&driver->domains, vmdef)))
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goto cleanup;
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vmdef = NULL;
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@ -2697,6 +2697,7 @@ static virDomainPtr qemudDomainCreate(virConnectPtr conn, const char *xml,
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}
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if (!(vm = virDomainAssignDef(conn,
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driver->caps,
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&driver->domains,
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def)))
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goto cleanup;
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@ -3757,6 +3758,7 @@ static int qemudDomainRestore(virConnectPtr conn,
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}
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if (!(vm = virDomainAssignDef(conn,
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driver->caps,
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&driver->domains,
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def))) {
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qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
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@ -4243,6 +4245,7 @@ static virDomainPtr qemudDomainDefine(virConnectPtr conn, const char *xml) {
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goto cleanup;
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if (!(vm = virDomainAssignDef(conn,
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driver->caps,
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&driver->domains,
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def))) {
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goto cleanup;
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@ -6101,6 +6104,7 @@ qemudDomainMigratePrepareTunnel(virConnectPtr dconn,
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}
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if (!(vm = virDomainAssignDef(dconn,
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driver->caps,
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&driver->domains,
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def))) {
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qemudReportError(dconn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
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@ -6339,6 +6343,7 @@ qemudDomainMigratePrepare2 (virConnectPtr dconn,
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}
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if (!(vm = virDomainAssignDef(dconn,
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driver->caps,
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&driver->domains,
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def))) {
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qemudReportError (dconn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
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@ -387,7 +387,8 @@ static int testOpenDefault(virConnectPtr conn) {
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goto error;
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if (testDomainGenerateIfnames(conn, domdef) < 0)
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goto error;
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if (!(domobj = virDomainAssignDef(conn, &privconn->domains, domdef)))
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if (!(domobj = virDomainAssignDef(conn, privconn->caps,
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&privconn->domains, domdef)))
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goto error;
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domdef = NULL;
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domobj->def->id = privconn->nextDomID++;
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@ -739,7 +740,8 @@ static int testOpenFromFile(virConnectPtr conn,
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}
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if (testDomainGenerateIfnames(conn, def) < 0 ||
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!(dom = virDomainAssignDef(conn, &privconn->domains, def))) {
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!(dom = virDomainAssignDef(conn, privconn->caps,
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&privconn->domains, def))) {
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virDomainDefFree(def);
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goto error;
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}
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@ -1091,7 +1093,8 @@ testDomainCreateXML(virConnectPtr conn, const char *xml,
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if (testDomainGenerateIfnames(conn, def) < 0)
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goto cleanup;
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if (!(dom = virDomainAssignDef(conn, &privconn->domains, def)))
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if (!(dom = virDomainAssignDef(conn, privconn->caps,
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&privconn->domains, def)))
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goto cleanup;
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def = NULL;
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dom->state = VIR_DOMAIN_RUNNING;
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@ -1639,7 +1642,8 @@ static int testDomainRestore(virConnectPtr conn,
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if (testDomainGenerateIfnames(conn, def) < 0)
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goto cleanup;
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if (!(dom = virDomainAssignDef(conn, &privconn->domains, def)))
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if (!(dom = virDomainAssignDef(conn, privconn->caps,
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&privconn->domains, def)))
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goto cleanup;
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def = NULL;
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@ -1913,7 +1917,8 @@ static virDomainPtr testDomainDefineXML(virConnectPtr conn,
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if (testDomainGenerateIfnames(conn, def) < 0)
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goto cleanup;
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if (!(dom = virDomainAssignDef(conn, &privconn->domains, def)))
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if (!(dom = virDomainAssignDef(conn, privconn->caps,
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&privconn->domains, def)))
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goto cleanup;
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def = NULL;
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dom->persistent = 1;
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@ -1212,6 +1212,7 @@ static virDomainPtr umlDomainCreate(virConnectPtr conn, const char *xml,
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}
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if (!(vm = virDomainAssignDef(conn,
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driver->caps,
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&driver->domains,
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def)))
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goto cleanup;
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@ -1546,6 +1547,7 @@ static virDomainPtr umlDomainDefine(virConnectPtr conn, const char *xml) {
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goto cleanup;
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if (!(vm = virDomainAssignDef(conn,
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driver->caps,
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&driver->domains,
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def)))
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goto cleanup;
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