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Convert Xen domain create/define/getxml/migration APIs to use virDomainDefPtr
Introduce use of a virDomainDefPtr in the domain create, migrate, getxml, & define APIs to simplify introduction of ACL security checks. The virDomainPtr cannot be safely used, since the app may have supplied mis-matching name/uuid/id fields. eg the name points to domain X, while the uuid points to domain Y. Resolving the virDomainPtr to a virDomainDefPtr ensures a consistent name/uuid/id set. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange
parent
0a6fc8ab09
commit
18b14012e4
@ -647,11 +647,30 @@ xenUnifiedConnectNumOfDomains(virConnectPtr conn)
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static virDomainPtr
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xenUnifiedDomainCreateXML(virConnectPtr conn,
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const char *xmlDesc, unsigned int flags)
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const char *xml,
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unsigned int flags)
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{
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xenUnifiedPrivatePtr priv = conn->privateData;
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virDomainDefPtr def = NULL;
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virDomainPtr ret = NULL;
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virCheckFlags(0, NULL);
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return xenDaemonCreateXML(conn, xmlDesc);
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if (!(def = virDomainDefParseString(xml, priv->caps, priv->xmlopt,
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1 << VIR_DOMAIN_VIRT_XEN,
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VIR_DOMAIN_XML_INACTIVE)))
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goto cleanup;
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if (xenDaemonCreateXML(conn, def) < 0)
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goto cleanup;
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ret = virGetDomain(conn, def->name, def->uuid);
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if (ret)
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ret->id = def->id;
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cleanup:
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virDomainDefFree(def);
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return ret;
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}
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static virDomainPtr
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@ -1292,18 +1311,31 @@ static char *
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xenUnifiedDomainGetXMLDesc(virDomainPtr dom, unsigned int flags)
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{
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xenUnifiedPrivatePtr priv = dom->conn->privateData;
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virDomainDefPtr minidef = NULL;
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virDomainDefPtr def = NULL;
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char *ret = NULL;
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if (!(minidef = xenGetDomainDefForDom(dom)))
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goto cleanup;
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if (dom->id < 0 && priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4) {
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return xenXMDomainGetXMLDesc(dom, flags);
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def = xenXMDomainGetXMLDesc(dom->conn, minidef);
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} else {
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char *cpus, *res;
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char *cpus;
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xenUnifiedLock(priv);
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cpus = xenDomainUsedCpus(dom);
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xenUnifiedUnlock(priv);
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res = xenDaemonDomainGetXMLDesc(dom, flags, cpus);
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def = xenDaemonDomainGetXMLDesc(dom->conn, minidef, cpus);
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VIR_FREE(cpus);
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return res;
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}
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if (def)
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ret = virDomainDefFormat(def, flags);
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cleanup:
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virDomainDefFree(def);
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virDomainDefFree(minidef);
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return ret;
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}
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@ -1436,10 +1468,21 @@ xenUnifiedDomainMigratePerform(virDomainPtr dom,
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const char *dname,
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unsigned long resource)
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{
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virDomainDefPtr def = NULL;
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int ret = -1;
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virCheckFlags(XEN_MIGRATION_FLAGS, -1);
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return xenDaemonDomainMigratePerform(dom, cookie, cookielen, uri,
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if (!(def = xenGetDomainDefForDom(dom)))
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goto cleanup;
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ret = xenDaemonDomainMigratePerform(dom->conn, def,
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cookie, cookielen, uri,
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flags, dname, resource);
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cleanup:
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virDomainDefFree(def);
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return ret;
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}
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static virDomainPtr
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@ -1450,45 +1493,37 @@ xenUnifiedDomainMigrateFinish(virConnectPtr dconn,
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const char *uri ATTRIBUTE_UNUSED,
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unsigned long flags)
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{
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virDomainPtr dom = NULL;
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char *domain_xml = NULL;
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virDomainPtr dom_new = NULL;
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xenUnifiedPrivatePtr priv = dconn->privateData;
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virDomainPtr ret = NULL;
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virDomainDefPtr minidef = NULL;
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virDomainDefPtr def = NULL;
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virCheckFlags(XEN_MIGRATION_FLAGS, NULL);
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if (!(dom = xenUnifiedDomainLookupByName(dconn, dname)))
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return NULL;
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if (!(minidef = xenGetDomainDefForName(dconn, dname)))
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goto cleanup;
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if (flags & VIR_MIGRATE_PERSIST_DEST) {
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domain_xml = xenDaemonDomainGetXMLDesc(dom, 0, NULL);
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if (! domain_xml) {
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virReportError(VIR_ERR_MIGRATE_PERSIST_FAILED,
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"%s", _("failed to get XML representation of migrated domain"));
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goto error;
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if (!(def = xenDaemonDomainGetXMLDesc(dconn, minidef, NULL)))
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goto cleanup;
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if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4) {
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if (xenXMDomainDefineXML(dconn, def) < 0)
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goto cleanup;
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} else {
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if (xenDaemonDomainDefineXML(dconn, def) < 0)
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goto cleanup;
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}
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}
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dom_new = xenDaemonDomainDefineXML(dconn, domain_xml);
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if (! dom_new) {
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virReportError(VIR_ERR_MIGRATE_PERSIST_FAILED,
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"%s", _("failed to define domain on destination host"));
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goto error;
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}
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ret = virGetDomain(dconn, minidef->name, minidef->uuid);
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if (ret)
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ret->id = minidef->id;
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/* Free additional reference added by Define */
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virDomainFree(dom_new);
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}
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VIR_FREE(domain_xml);
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return dom;
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error:
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virDomainFree(dom);
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VIR_FREE(domain_xml);
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return NULL;
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cleanup:
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virDomainDefFree(def);
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virDomainDefFree(minidef);
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return ret;
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}
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static int
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@ -1563,23 +1598,52 @@ static virDomainPtr
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xenUnifiedDomainDefineXML(virConnectPtr conn, const char *xml)
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{
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xenUnifiedPrivatePtr priv = conn->privateData;
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virDomainDefPtr def = NULL;
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virDomainPtr ret = NULL;
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if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
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return xenXMDomainDefineXML(conn, xml);
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else
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return xenDaemonDomainDefineXML(conn, xml);
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if (!(def = virDomainDefParseString(xml, priv->caps, priv->xmlopt,
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1 << VIR_DOMAIN_VIRT_XEN,
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VIR_DOMAIN_XML_INACTIVE)))
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goto cleanup;
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if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4) {
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if (xenXMDomainDefineXML(conn, def) < 0)
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goto cleanup;
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def = NULL; /* XM driver owns it now */
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} else {
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if (xenDaemonDomainDefineXML(conn, def) < 0)
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goto cleanup;
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}
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ret = virGetDomain(conn, def->name, def->uuid);
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if (ret)
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ret->id = -1;
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cleanup:
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virDomainDefFree(def);
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return ret;
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}
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static int
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xenUnifiedDomainUndefineFlags(virDomainPtr dom, unsigned int flags)
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{
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xenUnifiedPrivatePtr priv = dom->conn->privateData;
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virDomainDefPtr def = NULL;
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int ret = -1;
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virCheckFlags(0, -1);
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if (!(def = xenGetDomainDefForDom(dom)))
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goto cleanup;
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if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
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return xenXMDomainUndefine(dom);
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ret = xenXMDomainUndefine(dom->conn, def);
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else
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return xenDaemonDomainUndefine(dom);
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ret = xenDaemonDomainUndefine(dom->conn, def);
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cleanup:
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virDomainDefFree(def);
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return ret;
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}
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static int
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@ -1614,35 +1614,21 @@ cleanup:
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/**
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* xenDaemonDomainGetXMLDesc:
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* @domain: a domain object
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* @flags: potential dump flags
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* @cpus: list of cpu the domain is pinned to.
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*
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* Provide an XML description of the domain.
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* Get the XML description of the domain as a structure.
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*
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* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
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* the caller must free() the returned value.
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* Returns a virDomainDefPtr instance, or NULL in case of error.
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*/
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char *
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xenDaemonDomainGetXMLDesc(virDomainPtr domain,
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unsigned int flags,
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virDomainDefPtr
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xenDaemonDomainGetXMLDesc(virConnectPtr conn,
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virDomainDefPtr minidef,
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const char *cpus)
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{
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virDomainDefPtr def;
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char *xml;
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/* Flags checked by virDomainDefFormat */
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if (!(def = xenDaemonDomainFetch(domain->conn,
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domain->id,
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domain->name,
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cpus)))
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return NULL;
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xml = virDomainDefFormat(def, flags);
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virDomainDefFree(def);
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return xml;
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return xenDaemonDomainFetch(conn,
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minidef->id,
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minidef->name,
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cpus);
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}
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@ -2142,7 +2128,7 @@ xenDaemonLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
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/**
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* xenDaemonCreateXML:
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* @conn: pointer to the hypervisor connection
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* @xmlDesc: an XML description of the domain
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* @def: domain configuration
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* @flags: an optional set of virDomainFlags
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*
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* Launch a new Linux guest domain, based on an XML description similar
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@ -2151,25 +2137,25 @@ xenDaemonLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
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*
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* Returns a new domain object or NULL in case of failure
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*/
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virDomainPtr
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xenDaemonCreateXML(virConnectPtr conn, const char *xmlDesc)
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int
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xenDaemonCreateXML(virConnectPtr conn, virDomainDefPtr def)
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{
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int ret;
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char *sexpr;
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virDomainPtr dom = NULL;
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const char *tmp;
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struct sexpr *root;
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xenUnifiedPrivatePtr priv = conn->privateData;
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virDomainDefPtr def;
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if (!(def = virDomainDefParseString(xmlDesc, priv->caps, priv->xmlopt,
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1 << VIR_DOMAIN_VIRT_XEN,
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VIR_DOMAIN_XML_INACTIVE)))
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return NULL;
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if (!(sexpr = xenFormatSxpr(conn, def, priv->xendConfigVersion))) {
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virDomainDefFree(def);
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return NULL;
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if (def->id != -1) {
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virReportError(VIR_ERR_OPERATION_INVALID,
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_("Domain %s is already running"),
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def->name);
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return -1;
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}
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if (!(sexpr = xenFormatSxpr(conn, def, priv->xendConfigVersion)))
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return -1;
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ret = xenDaemonDomainCreateXML(conn, sexpr);
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VIR_FREE(sexpr);
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if (ret != 0) {
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@ -2178,9 +2164,20 @@ xenDaemonCreateXML(virConnectPtr conn, const char *xmlDesc)
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/* This comes before wait_for_devices, to ensure that latter
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cleanup will destroy the domain upon failure */
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if (!(dom = virDomainLookupByName(conn, def->name)))
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root = sexpr_get(conn, "/xend/domain/%s?detail=1", def->name);
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if (root == NULL)
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goto error;
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tmp = sexpr_node(root, "domain/domid");
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if (!tmp) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Domain %s did not start"),
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def->name);
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goto error;
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}
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if (tmp)
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def->id = sexpr_int(root, "domain/domid");
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if (xend_wait_for_devices(conn, def->name) < 0)
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goto error;
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@ -2188,16 +2185,13 @@ xenDaemonCreateXML(virConnectPtr conn, const char *xmlDesc)
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goto error;
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virDomainDefFree(def);
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return dom;
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return 0;
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error:
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/* Make sure we don't leave a still-born domain around */
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if (dom != NULL) {
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if (def->id != -1)
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xenDaemonDomainDestroy(conn, def);
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virObjectUnref(dom);
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}
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virDomainDefFree(def);
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return NULL;
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return -1;
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}
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/**
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@ -2667,7 +2661,8 @@ xenDaemonDomainMigratePrepare(virConnectPtr dconn ATTRIBUTE_UNUSED,
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}
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int
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xenDaemonDomainMigratePerform(virDomainPtr domain,
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xenDaemonDomainMigratePerform(virConnectPtr conn,
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virDomainDefPtr def,
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const char *cookie ATTRIBUTE_UNUSED,
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int cookielen ATTRIBUTE_UNUSED,
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const char *uri,
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@ -2811,7 +2806,7 @@ xenDaemonDomainMigratePerform(virDomainPtr domain,
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* to our advantage since all parameters supported and required
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* by current xend can be included without breaking older xend.
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*/
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ret = xend_op(domain->conn, domain->name,
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ret = xend_op(conn, def->name,
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"op", "migrate",
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"destination", hostname,
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"live", live,
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@ -2824,34 +2819,24 @@ xenDaemonDomainMigratePerform(virDomainPtr domain,
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VIR_FREE(hostname);
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if (ret == 0 && undefined_source)
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xenDaemonDomainUndefine(domain);
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xenDaemonDomainUndefine(conn, def);
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VIR_DEBUG("migration done");
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return ret;
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}
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virDomainPtr
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xenDaemonDomainDefineXML(virConnectPtr conn, const char *xmlDesc)
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int
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xenDaemonDomainDefineXML(virConnectPtr conn, virDomainDefPtr def)
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{
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int ret;
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int ret = -1;
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char *sexpr;
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virDomainPtr dom;
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xenUnifiedPrivatePtr priv = conn->privateData;
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virDomainDefPtr def;
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if (!(def = virDomainDefParseString(xmlDesc, priv->caps, priv->xmlopt,
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1 << VIR_DOMAIN_VIRT_XEN,
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VIR_DOMAIN_XML_INACTIVE))) {
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virReportError(VIR_ERR_XML_ERROR,
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"%s", _("failed to parse domain description"));
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return NULL;
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}
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if (!(sexpr = xenFormatSxpr(conn, def, priv->xendConfigVersion))) {
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virReportError(VIR_ERR_XML_ERROR,
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"%s", _("failed to build sexpr"));
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goto error;
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goto cleanup;
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}
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ret = xend_op(conn, "", "op", "new", "config", sexpr, NULL);
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@ -2859,20 +2844,15 @@ xenDaemonDomainDefineXML(virConnectPtr conn, const char *xmlDesc)
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if (ret != 0) {
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virReportError(VIR_ERR_XEN_CALL,
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_("Failed to create inactive domain %s"), def->name);
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goto error;
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goto cleanup;
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}
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dom = virDomainLookupByName(conn, def->name);
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if (dom == NULL) {
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goto error;
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}
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virDomainDefFree(def);
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return dom;
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ret = 0;
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error:
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virDomainDefFree(def);
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return NULL;
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cleanup:
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return ret;
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}
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|
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int
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xenDaemonDomainCreate(virConnectPtr conn,
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virDomainDefPtr def)
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@ -2892,9 +2872,9 @@ xenDaemonDomainCreate(virConnectPtr conn,
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}
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int
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xenDaemonDomainUndefine(virDomainPtr domain)
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xenDaemonDomainUndefine(virConnectPtr conn, virDomainDefPtr def)
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{
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return xend_op(domain->conn, domain->name, "op", "delete", NULL);
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return xend_op(conn, def->name, "op", "delete", NULL);
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}
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/**
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@ -118,7 +118,8 @@ int xenDaemonDomainGetState(virConnectPtr conn,
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virDomainDefPtr def,
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int *state,
|
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int *reason);
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char *xenDaemonDomainGetXMLDesc(virDomainPtr domain, unsigned int flags,
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virDomainDefPtr xenDaemonDomainGetXMLDesc(virConnectPtr conn,
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virDomainDefPtr def,
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const char *cpus);
|
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unsigned long long xenDaemonDomainGetMaxMemory(virConnectPtr conn,
|
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virDomainDefPtr def);
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@ -139,10 +140,12 @@ int xenDaemonDetachDeviceFlags(virDomainPtr domain,
|
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const char *xml,
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unsigned int flags);
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|
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virDomainPtr xenDaemonDomainDefineXML(virConnectPtr xend, const char *sexpr);
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int xenDaemonDomainDefineXML(virConnectPtr conn,
|
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virDomainDefPtr def);
|
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int xenDaemonDomainCreate(virConnectPtr conn,
|
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virDomainDefPtr def);
|
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int xenDaemonDomainUndefine(virDomainPtr domain);
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int xenDaemonDomainUndefine(virConnectPtr conn,
|
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virDomainDefPtr def);
|
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|
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int xenDaemonDomainSetVcpus (virDomainPtr domain,
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unsigned int vcpus);
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@ -167,11 +170,18 @@ int xenDaemonDomainGetAutostart (virDomainPtr dom,
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int xenDaemonDomainSetAutostart (virDomainPtr domain,
|
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int autostart);
|
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|
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virDomainPtr xenDaemonCreateXML(virConnectPtr conn, const char *xmlDesc);
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int xenDaemonCreateXML(virConnectPtr conn, virDomainDefPtr def);
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virDomainDefPtr xenDaemonLookupByUUID(virConnectPtr conn, const unsigned char *uuid);
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||||
virDomainDefPtr xenDaemonLookupByName(virConnectPtr conn, const char *domname);
|
||||
int xenDaemonDomainMigratePrepare (virConnectPtr dconn, char **cookie, int *cookielen, const char *uri_in, char **uri_out, unsigned long flags, const char *dname, unsigned long resource);
|
||||
int xenDaemonDomainMigratePerform (virDomainPtr domain, const char *cookie, int cookielen, const char *uri, unsigned long flags, const char *dname, unsigned long resource);
|
||||
int xenDaemonDomainMigratePrepare (virConnectPtr dconn,
|
||||
char **cookie, int *cookielen,
|
||||
const char *uri_in, char **uri_out,
|
||||
unsigned long flags, const char *dname, unsigned long resource);
|
||||
int xenDaemonDomainMigratePerform (virConnectPtr conn,
|
||||
virDomainDefPtr def,
|
||||
const char *cookie, int cookielen,
|
||||
const char *uri, unsigned long flags,
|
||||
const char *dname, unsigned long resource);
|
||||
|
||||
int xenDaemonDomainBlockPeek (virDomainPtr domain, const char *path, unsigned long long offset, size_t size, void *buffer);
|
||||
|
||||
|
||||
@ -501,28 +501,29 @@ error:
|
||||
* Turn a config record into a lump of XML describing the
|
||||
* domain, suitable for later feeding for virDomainCreateXML
|
||||
*/
|
||||
char *
|
||||
xenXMDomainGetXMLDesc(virDomainPtr domain, unsigned int flags)
|
||||
virDomainDefPtr
|
||||
xenXMDomainGetXMLDesc(virConnectPtr conn,
|
||||
virDomainDefPtr def)
|
||||
{
|
||||
xenUnifiedPrivatePtr priv = domain->conn->privateData;
|
||||
xenUnifiedPrivatePtr priv = conn->privateData;
|
||||
const char *filename;
|
||||
xenXMConfCachePtr entry;
|
||||
char *ret = NULL;
|
||||
virDomainDefPtr ret = NULL;
|
||||
|
||||
/* Flags checked by virDomainDefFormat */
|
||||
|
||||
if (domain->id != -1)
|
||||
return NULL;
|
||||
|
||||
xenUnifiedLock(priv);
|
||||
|
||||
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
|
||||
if (!(filename = virHashLookup(priv->nameConfigMap, def->name)))
|
||||
goto cleanup;
|
||||
|
||||
if (!(entry = virHashLookup(priv->configCache, filename)))
|
||||
goto cleanup;
|
||||
|
||||
ret = virDomainDefFormat(entry->def, flags);
|
||||
ret = virDomainDefCopy(entry->def,
|
||||
priv->caps,
|
||||
priv->xmlopt,
|
||||
false);
|
||||
|
||||
cleanup:
|
||||
xenUnifiedUnlock(priv);
|
||||
@ -946,13 +947,11 @@ xenXMDomainCreate(virConnectPtr conn,
|
||||
* Create a config file for a domain, based on an XML
|
||||
* document describing its config
|
||||
*/
|
||||
virDomainPtr
|
||||
xenXMDomainDefineXML(virConnectPtr conn, const char *xml)
|
||||
int
|
||||
xenXMDomainDefineXML(virConnectPtr conn, virDomainDefPtr def)
|
||||
{
|
||||
virDomainPtr ret;
|
||||
char *filename = NULL;
|
||||
const char *oldfilename;
|
||||
virDomainDefPtr def = NULL;
|
||||
virConfPtr conf = NULL;
|
||||
xenXMConfCachePtr entry = NULL;
|
||||
xenUnifiedPrivatePtr priv = conn->privateData;
|
||||
@ -961,14 +960,7 @@ xenXMDomainDefineXML(virConnectPtr conn, const char *xml)
|
||||
|
||||
if (!xenInotifyActive(conn) && xenXMConfigCacheRefresh(conn) < 0) {
|
||||
xenUnifiedUnlock(priv);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (!(def = virDomainDefParseString(xml, priv->caps, priv->xmlopt,
|
||||
1 << VIR_DOMAIN_VIRT_XEN,
|
||||
VIR_DOMAIN_XML_INACTIVE))) {
|
||||
xenUnifiedUnlock(priv);
|
||||
return NULL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!(conf = xenFormatXM(conn, def, priv->xendConfigVersion)))
|
||||
@ -1062,10 +1054,9 @@ xenXMDomainDefineXML(virConnectPtr conn, const char *xml)
|
||||
goto error;
|
||||
}
|
||||
|
||||
ret = virGetDomain(conn, def->name, def->uuid);
|
||||
xenUnifiedUnlock(priv);
|
||||
VIR_FREE(filename);
|
||||
return ret;
|
||||
return 0;
|
||||
|
||||
error:
|
||||
VIR_FREE(filename);
|
||||
@ -1073,25 +1064,25 @@ xenXMDomainDefineXML(virConnectPtr conn, const char *xml)
|
||||
VIR_FREE(entry->filename);
|
||||
VIR_FREE(entry);
|
||||
virConfFree(conf);
|
||||
virDomainDefFree(def);
|
||||
xenUnifiedUnlock(priv);
|
||||
return NULL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Delete a domain from disk
|
||||
*/
|
||||
int
|
||||
xenXMDomainUndefine(virDomainPtr domain)
|
||||
xenXMDomainUndefine(virConnectPtr conn,
|
||||
virDomainDefPtr def)
|
||||
{
|
||||
xenUnifiedPrivatePtr priv = domain->conn->privateData;
|
||||
xenUnifiedPrivatePtr priv = conn->privateData;
|
||||
const char *filename;
|
||||
xenXMConfCachePtr entry;
|
||||
int ret = -1;
|
||||
|
||||
xenUnifiedLock(priv);
|
||||
|
||||
if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
|
||||
if (!(filename = virHashLookup(priv->nameConfigMap, def->name)))
|
||||
goto cleanup;
|
||||
|
||||
if (!(entry = virHashLookup(priv->configCache, filename)))
|
||||
@ -1101,7 +1092,7 @@ xenXMDomainUndefine(virDomainPtr domain)
|
||||
goto cleanup;
|
||||
|
||||
/* Remove the name -> filename mapping */
|
||||
if (virHashRemoveEntry(priv->nameConfigMap, domain->name) < 0)
|
||||
if (virHashRemoveEntry(priv->nameConfigMap, def->name) < 0)
|
||||
goto cleanup;
|
||||
|
||||
/* Remove the config record itself */
|
||||
|
||||
@ -44,7 +44,8 @@ int xenXMDomainGetState(virConnectPtr conn,
|
||||
virDomainDefPtr def,
|
||||
int *state,
|
||||
int *reason);
|
||||
char *xenXMDomainGetXMLDesc(virDomainPtr domain, unsigned int flags);
|
||||
virDomainDefPtr xenXMDomainGetXMLDesc(virConnectPtr conn,
|
||||
virDomainDefPtr def);
|
||||
int xenXMDomainSetMemory(virConnectPtr conn,
|
||||
virDomainDefPtr def,
|
||||
unsigned long memory);
|
||||
@ -67,8 +68,8 @@ int xenXMNumOfDefinedDomains(virConnectPtr conn);
|
||||
|
||||
int xenXMDomainCreate(virConnectPtr conn,
|
||||
virDomainDefPtr def);
|
||||
virDomainPtr xenXMDomainDefineXML(virConnectPtr con, const char *xml);
|
||||
int xenXMDomainUndefine(virDomainPtr domain);
|
||||
int xenXMDomainDefineXML(virConnectPtr con, virDomainDefPtr def);
|
||||
int xenXMDomainUndefine(virConnectPtr conn, virDomainDefPtr def);
|
||||
|
||||
int xenXMDomainBlockPeek (virDomainPtr dom, const char *path, unsigned long long offset, size_t size, void *buffer);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user