[PATCH 03/11] Convert Xen domain property driver methods to use virDomainDefPtr

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From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>

Introduce use of a virDomainDefPtr in the domain property
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@xxxxxxxxxx>
---
 src/xen/xen_driver.c     | 98 +++++++++++++++++++++++++++++++++++++-----------
 src/xen/xen_hypervisor.c | 42 +++++++++++----------
 src/xen/xen_hypervisor.h | 18 +++++----
 src/xen/xend_internal.c  | 44 +++++++++++++---------
 src/xen/xend_internal.h  | 21 ++++++++---
 src/xen/xm_internal.c    | 41 +++++++++++---------
 src/xen/xm_internal.h    | 18 ++++++---
 7 files changed, 187 insertions(+), 95 deletions(-)

diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index 37107ff..68a86b7 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -889,18 +889,27 @@ static char *
 xenUnifiedDomainGetOSType(virDomainPtr dom)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    char *ret = NULL;
+    virDomainDefPtr def;
 
-    if (dom->id < 0) {
+    if (!(def = xenGetDomainDefForDom(dom)))
+        goto cleanup;
+
+    if (def->id < 0) {
         if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4) {
             virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                            _("Unable to query OS type for inactive domain"));
             return NULL;
         } else {
-            return xenDaemonDomainGetOSType(dom);
+            ret = xenHypervisorDomainGetOSType(dom->conn, def);
         }
     } else {
-        return xenHypervisorDomainGetOSType(dom);
+        ret = xenDaemonDomainGetOSType(dom->conn, def);
     }
+
+cleanup:
+    virDomainDefFree(def);
+    return ret;
 }
 
 
@@ -908,56 +917,92 @@ static unsigned long long
 xenUnifiedDomainGetMaxMemory(virDomainPtr dom)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    unsigned long long ret = 0;
+    virDomainDefPtr def;
 
-    if (dom->id < 0) {
+    if (!(def = xenGetDomainDefForDom(dom)))
+        goto cleanup;
+
+    if (def->id < 0) {
         if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-            return xenXMDomainGetMaxMemory(dom);
+            ret = xenXMDomainGetMaxMemory(dom->conn, def);
         else
-            return xenDaemonDomainGetMaxMemory(dom);
+            ret = xenDaemonDomainGetMaxMemory(dom->conn, def);
     } else {
-        return xenHypervisorGetMaxMemory(dom);
+        ret = xenHypervisorGetMaxMemory(dom->conn, def);
     }
+
+cleanup:
+    virDomainDefFree(def);
+    return ret;
 }
 
 static int
 xenUnifiedDomainSetMaxMemory(virDomainPtr dom, unsigned long memory)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    int ret = -1;
+    virDomainDefPtr def;
 
-    if (dom->id < 0) {
+    if (!(def = xenGetDomainDefForDom(dom)))
+        goto cleanup;
+
+    if (def->id < 0) {
         if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-            return xenXMDomainSetMaxMemory(dom, memory);
+            ret = xenXMDomainSetMaxMemory(dom->conn, def, memory);
         else
-            return xenDaemonDomainSetMaxMemory(dom, memory);
+            ret = xenDaemonDomainSetMaxMemory(dom->conn, def, memory);
     } else {
-        return xenHypervisorSetMaxMemory(dom, memory);
+        ret = xenHypervisorSetMaxMemory(dom->conn, def, memory);
     }
+
+cleanup:
+    virDomainDefFree(def);
+    return ret;
 }
 
 static int
 xenUnifiedDomainSetMemory(virDomainPtr dom, unsigned long memory)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    int ret = -1;
+    virDomainDefPtr def;
 
-    if (dom->id < 0 && priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-        return xenXMDomainSetMemory(dom, memory);
+    if (!(def = xenGetDomainDefForDom(dom)))
+        goto cleanup;
+
+    if (def->id < 0 && priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
+        ret = xenXMDomainSetMemory(dom->conn, def, memory);
     else
-        return xenDaemonDomainSetMemory(dom, memory);
+        ret = xenDaemonDomainSetMemory(dom->conn, def, memory);
+
+cleanup:
+    virDomainDefFree(def);
+    return ret;
 }
 
 static int
 xenUnifiedDomainGetInfo(virDomainPtr dom, virDomainInfoPtr info)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    int ret = -1;
+    virDomainDefPtr def;
 
-    if (dom->id < 0) {
+    if (!(def = xenGetDomainDefForDom(dom)))
+        goto cleanup;
+
+    if (def->id < 0) {
         if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-            return xenXMDomainGetInfo(dom, info);
+            ret = xenXMDomainGetInfo(dom->conn, def, info);
         else
-            return xenDaemonDomainGetInfo(dom, info);
+            ret = xenDaemonDomainGetInfo(dom->conn, def, info);
     } else {
-        return xenHypervisorGetDomainInfo(dom, info);
+        ret = xenHypervisorGetDomainInfo(dom->conn, def, info);
     }
+
+cleanup:
+    virDomainDefFree(def);
+    return ret;
 }
 
 static int
@@ -967,17 +1012,26 @@ xenUnifiedDomainGetState(virDomainPtr dom,
                          unsigned int flags)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    int ret = -1;
+    virDomainDefPtr def;
 
     virCheckFlags(0, -1);
 
-    if (dom->id < 0) {
+    if (!(def = xenGetDomainDefForDom(dom)))
+        goto cleanup;
+
+    if (def->id < 0) {
         if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-            return xenXMDomainGetState(dom, state, reason);
+            ret = xenXMDomainGetState(dom->conn, def, state, reason);
         else
-            return xenDaemonDomainGetState(dom, state, reason);
+            ret = xenDaemonDomainGetState(dom->conn, def, state, reason);
     } else {
-        return xenHypervisorGetDomainState(dom, state, reason);
+        ret = xenHypervisorGetDomainState(dom->conn, def, state, reason);
     }
+
+cleanup:
+    virDomainDefFree(def);
+    return ret;
 }
 
 static int
diff --git a/src/xen/xen_hypervisor.c b/src/xen/xen_hypervisor.c
index 55b0930..423ce85 100644
--- a/src/xen/xen_hypervisor.c
+++ b/src/xen/xen_hypervisor.c
@@ -2508,27 +2508,28 @@ xenHypervisorGetCapabilities(virConnectPtr conn)
 
 
 char *
-xenHypervisorDomainGetOSType(virDomainPtr dom)
+xenHypervisorDomainGetOSType(virConnectPtr conn,
+                             virDomainDefPtr def)
 {
-    xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    xenUnifiedPrivatePtr priv = conn->privateData;
     xen_getdomaininfo dominfo;
     char *ostype = NULL;
 
     /* HV's earlier than 3.1.0 don't include the HVM flags in guests status*/
     if (hv_versions.hypervisor < 2 ||
         hv_versions.dom_interface < 4) {
-        return xenDaemonDomainGetOSType(dom);
+        return xenDaemonDomainGetOSType(conn, def);
     }
 
     XEN_GETDOMAININFO_CLEAR(dominfo);
 
-    if (virXen_getdomaininfo(priv->handle, dom->id, &dominfo) < 0) {
+    if (virXen_getdomaininfo(priv->handle, def->id, &dominfo) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("cannot get domain details"));
         return NULL;
     }
 
-    if (XEN_GETDOMAININFO_DOMAIN(dominfo) != dom->id) {
+    if (XEN_GETDOMAININFO_DOMAIN(dominfo) != def->id) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("cannot get domain details"));
         return NULL;
@@ -2678,9 +2679,10 @@ xenHypervisorGetMaxVcpus(virConnectPtr conn ATTRIBUTE_UNUSED,
  * Returns the memory size in kilobytes or 0 in case of error.
  */
 unsigned long
-xenHypervisorGetMaxMemory(virDomainPtr dom)
+xenHypervisorGetMaxMemory(virConnectPtr conn,
+                          virDomainDefPtr def)
 {
-    xenUnifiedPrivatePtr priv = dom->conn->privateData;
+    xenUnifiedPrivatePtr priv = conn->privateData;
     xen_getdomaininfo dominfo;
     int ret;
 
@@ -2692,9 +2694,9 @@ xenHypervisorGetMaxMemory(virDomainPtr dom)
 
     XEN_GETDOMAININFO_CLEAR(dominfo);
 
-    ret = virXen_getdomaininfo(priv->handle, dom->id, &dominfo);
+    ret = virXen_getdomaininfo(priv->handle, def->id, &dominfo);
 
-    if ((ret < 0) || (XEN_GETDOMAININFO_DOMAIN(dominfo) != dom->id))
+    if ((ret < 0) || (XEN_GETDOMAININFO_DOMAIN(dominfo) != def->id))
         return 0;
 
     return (unsigned long) XEN_GETDOMAININFO_MAX_PAGES(dominfo) * kb_per_pages;
@@ -2788,9 +2790,11 @@ xenHypervisorGetDomInfo(virConnectPtr conn, int id, virDomainInfoPtr info)
  * Returns 0 in case of success, -1 in case of error.
  */
 int
-xenHypervisorGetDomainInfo(virDomainPtr domain, virDomainInfoPtr info)
+xenHypervisorGetDomainInfo(virConnectPtr conn,
+                           virDomainDefPtr def,
+                           virDomainInfoPtr info)
 {
-    return xenHypervisorGetDomInfo(domain->conn, domain->id, info);
+    return xenHypervisorGetDomInfo(conn, def->id, info);
 }
 
 /**
@@ -2804,13 +2808,14 @@ xenHypervisorGetDomainInfo(virDomainPtr domain, virDomainInfoPtr info)
  * Returns 0 in case of success, -1 in case of error.
  */
 int
-xenHypervisorGetDomainState(virDomainPtr domain,
+xenHypervisorGetDomainState(virConnectPtr conn,
+                            virDomainDefPtr def,
                             int *state,
                             int *reason)
 {
     virDomainInfo info;
 
-    if (xenHypervisorGetDomInfo(domain->conn, domain->id, &info) < 0)
+    if (xenHypervisorGetDomInfo(conn, def->id, &info) < 0)
         return -1;
 
     *state = info.state;
@@ -2899,15 +2904,14 @@ xenHypervisorNodeGetCellsFreeMemory(virConnectPtr conn,
  * Returns 0 in case of success, -1 in case of error.
  */
 int
-xenHypervisorSetMaxMemory(virDomainPtr domain, unsigned long memory)
+xenHypervisorSetMaxMemory(virConnectPtr conn,
+                          virDomainDefPtr def,
+                          unsigned long memory)
 {
     int ret;
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
-
-    if (domain->id < 0)
-        return -1;
+    xenUnifiedPrivatePtr priv = conn->privateData;
 
-    ret = virXen_setmaxmem(priv->handle, domain->id, memory);
+    ret = virXen_setmaxmem(priv->handle, def->id, memory);
     if (ret < 0)
         return -1;
     return 0;
diff --git a/src/xen/xen_hypervisor.h b/src/xen/xen_hypervisor.h
index 1d44a92..9ee1f13 100644
--- a/src/xen/xen_hypervisor.h
+++ b/src/xen/xen_hypervisor.h
@@ -50,7 +50,8 @@ virDomainDefPtr
         xenHypervisorLookupDomainByUUID (virConnectPtr conn,
                                          const unsigned char *uuid);
 char *
-        xenHypervisorDomainGetOSType    (virDomainPtr dom);
+        xenHypervisorDomainGetOSType    (virConnectPtr conn,
+                                         virDomainDefPtr def);
 
 int
         xenHypervisorOpen               (virConnectPtr conn,
@@ -64,23 +65,26 @@ virCapsPtr
                                               virArch hostarch,
                                               FILE *cpuinfo,
                                               FILE *capabilities);
-char *
-        xenHypervisorGetCapabilities    (virConnectPtr conn);
+char * xenHypervisorGetCapabilities    (virConnectPtr conn);
 unsigned long
-        xenHypervisorGetMaxMemory(virDomainPtr dom);
+        xenHypervisorGetMaxMemory(virConnectPtr conn,
+                                  virDomainDefPtr def);
 int     xenHypervisorGetMaxVcpus        (virConnectPtr conn,
                                          const char *type);
-int     xenHypervisorGetDomainInfo        (virDomainPtr domain,
+int     xenHypervisorGetDomainInfo        (virConnectPtr conn,
+                                           virDomainDefPtr def,
                                            virDomainInfoPtr info)
           ATTRIBUTE_NONNULL (1);
-int     xenHypervisorGetDomainState     (virDomainPtr domain,
+int     xenHypervisorGetDomainState     (virConnectPtr conn,
+                                         virDomainDefPtr def,
                                          int *state,
                                          int *reason)
           ATTRIBUTE_NONNULL (1);
 int     xenHypervisorGetDomInfo         (virConnectPtr conn,
                                          int id,
                                          virDomainInfoPtr info);
-int     xenHypervisorSetMaxMemory       (virDomainPtr domain,
+int     xenHypervisorSetMaxMemory       (virConnectPtr conn,
+                                         virDomainDefPtr def,
                                          unsigned long memory)
           ATTRIBUTE_NONNULL (1);
 int     xenHypervisorCheckID            (virConnectPtr conn,
diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c
index f8bd72b..c10567c 100644
--- a/src/xen/xend_internal.c
+++ b/src/xen/xend_internal.c
@@ -890,7 +890,7 @@ xend_detect_config_version(virConnectPtr conn)
  */
 static int
 ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
-sexpr_to_xend_domain_state(virDomainPtr domain, const struct sexpr *root)
+sexpr_to_xend_domain_state(virDomainDefPtr def, const struct sexpr *root)
 {
     const char *flags;
     int state = VIR_DOMAIN_NOSTATE;
@@ -908,7 +908,7 @@ sexpr_to_xend_domain_state(virDomainPtr domain, const struct sexpr *root)
             state = VIR_DOMAIN_BLOCKED;
         else if (strchr(flags, 'r'))
             state = VIR_DOMAIN_RUNNING;
-    } else if (domain->id < 0 || sexpr_int(root, "domain/status") == 0) {
+    } else if (def->id < 0 || sexpr_int(root, "domain/status") == 0) {
         /* As far as I can see the domain->id is a bad sign for checking
          * inactive domains as this is inaccurate after the domain has
          * been running once. However domain/status from xend seems to
@@ -933,13 +933,13 @@ sexpr_to_xend_domain_state(virDomainPtr domain, const struct sexpr *root)
  * Returns 0 in case of success, -1 in case of error
  */
 static int
-sexpr_to_xend_domain_info(virDomainPtr domain,
+sexpr_to_xend_domain_info(virDomainDefPtr def,
                           const struct sexpr *root,
                           virDomainInfoPtr info)
 {
     int vcpus;
 
-    info->state = sexpr_to_xend_domain_state(domain, root);
+    info->state = sexpr_to_xend_domain_state(def, root);
     info->memory = sexpr_u64(root, "domain/memory") << 10;
     info->maxMem = sexpr_u64(root, "domain/maxmem") << 10;
     info->cpuTime = sexpr_float(root, "domain/cpu_time") * 1000000000;
@@ -1374,13 +1374,14 @@ xenDaemonDomainDestroy(virConnectPtr conn, virDomainDefPtr def)
  *         freed by the caller.
  */
 char *
-xenDaemonDomainGetOSType(virDomainPtr domain)
+xenDaemonDomainGetOSType(virConnectPtr conn,
+                         virDomainDefPtr def)
 {
     char *type;
     struct sexpr *root;
 
     /* can we ask for a subset ? worth it ? */
-    root = sexpr_get(domain->conn, "/xend/domain/%s?detail=1", domain->name);
+    root = sexpr_get(conn, "/xend/domain/%s?detail=1", def->name);
     if (root == NULL)
         return NULL;
 
@@ -1489,13 +1490,13 @@ xenDaemonDomainRestore(virConnectPtr conn, const char *filename)
  * Returns the memory size in kilobytes or 0 in case of error.
  */
 unsigned long long
-xenDaemonDomainGetMaxMemory(virDomainPtr domain)
+xenDaemonDomainGetMaxMemory(virConnectPtr conn, virDomainDefPtr def)
 {
     unsigned long long ret = 0;
     struct sexpr *root;
 
     /* can we ask for a subset ? worth it ? */
-    root = sexpr_get(domain->conn, "/xend/domain/%s?detail=1", domain->name);
+    root = sexpr_get(conn, "/xend/domain/%s?detail=1", def->name);
     if (root == NULL)
         return 0;
 
@@ -1518,12 +1519,14 @@ xenDaemonDomainGetMaxMemory(virDomainPtr domain)
  * Returns 0 for success; -1 (with errno) on error
  */
 int
-xenDaemonDomainSetMaxMemory(virDomainPtr domain, unsigned long memory)
+xenDaemonDomainSetMaxMemory(virConnectPtr conn,
+                            virDomainDefPtr def,
+                            unsigned long memory)
 {
     char buf[1024];
 
     snprintf(buf, sizeof(buf), "%lu", VIR_DIV_UP(memory, 1024));
-    return xend_op(domain->conn, domain->name, "op", "maxmem_set", "memory",
+    return xend_op(conn, def->name, "op", "maxmem_set", "memory",
                    buf, NULL);
 }
 
@@ -1544,12 +1547,14 @@ xenDaemonDomainSetMaxMemory(virDomainPtr domain, unsigned long memory)
  * Returns 0 for success; -1 (with errno) on error
  */
 int
-xenDaemonDomainSetMemory(virDomainPtr domain, unsigned long memory)
+xenDaemonDomainSetMemory(virConnectPtr conn,
+                         virDomainDefPtr def,
+                         unsigned long memory)
 {
     char buf[1024];
 
     snprintf(buf, sizeof(buf), "%lu", VIR_DIV_UP(memory, 1024));
-    return xend_op(domain->conn, domain->name, "op", "mem_target_set",
+    return xend_op(conn, def->name, "op", "mem_target_set",
                    "target", buf, NULL);
 }
 
@@ -1640,16 +1645,18 @@ xenDaemonDomainGetXMLDesc(virDomainPtr domain,
  * Returns 0 in case of success, -1 in case of error
  */
 int
-xenDaemonDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info)
+xenDaemonDomainGetInfo(virConnectPtr conn,
+                       virDomainDefPtr def,
+                       virDomainInfoPtr info)
 {
     struct sexpr *root;
     int ret;
 
-    root = sexpr_get(domain->conn, "/xend/domain/%s?detail=1", domain->name);
+    root = sexpr_get(conn, "/xend/domain/%s?detail=1", def->name);
     if (root == NULL)
         return -1;
 
-    ret = sexpr_to_xend_domain_info(domain, root, info);
+    ret = sexpr_to_xend_domain_info(def, root, info);
     sexpr_free(root);
     return ret;
 }
@@ -1666,17 +1673,18 @@ xenDaemonDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info)
  * Returns 0 in case of success, -1 in case of error
  */
 int
-xenDaemonDomainGetState(virDomainPtr domain,
+xenDaemonDomainGetState(virConnectPtr conn,
+                        virDomainDefPtr def,
                         int *state,
                         int *reason)
 {
     struct sexpr *root;
 
-    root = sexpr_get(domain->conn, "/xend/domain/%s?detail=1", domain->name);
+    root = sexpr_get(conn, "/xend/domain/%s?detail=1", def->name);
     if (!root)
         return -1;
 
-    *state = sexpr_to_xend_domain_state(domain, root);
+    *state = sexpr_to_xend_domain_state(def, root);
     if (reason)
         *reason = 0;
 
diff --git a/src/xen/xend_internal.h b/src/xen/xend_internal.h
index 4a6b406..87e0a0f 100644
--- a/src/xen/xend_internal.h
+++ b/src/xen/xend_internal.h
@@ -96,18 +96,27 @@ int xenDaemonDomainSave(virDomainPtr domain, const char *filename);
 int xenDaemonDomainCoreDump(virDomainPtr domain, const char *filename,
                             unsigned int flags);
 int xenDaemonDomainRestore(virConnectPtr conn, const char *filename);
-int xenDaemonDomainSetMemory(virDomainPtr domain, unsigned long memory);
-int xenDaemonDomainSetMaxMemory(virDomainPtr domain, unsigned long memory);
-int xenDaemonDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info);
-int xenDaemonDomainGetState(virDomainPtr domain,
+int xenDaemonDomainSetMemory(virConnectPtr conn,
+                             virDomainDefPtr def,
+                             unsigned long memory);
+int xenDaemonDomainSetMaxMemory(virConnectPtr conn,
+                                virDomainDefPtr def,
+                                unsigned long memory);
+int xenDaemonDomainGetInfo(virConnectPtr conn,
+                           virDomainDefPtr def,
+                           virDomainInfoPtr info);
+int xenDaemonDomainGetState(virConnectPtr conn,
+                            virDomainDefPtr def,
                             int *state,
                             int *reason);
 char *xenDaemonDomainGetXMLDesc(virDomainPtr domain, unsigned int flags,
                                 const char *cpus);
-unsigned long long xenDaemonDomainGetMaxMemory(virDomainPtr domain);
+unsigned long long xenDaemonDomainGetMaxMemory(virConnectPtr conn,
+                                               virDomainDefPtr def);
 char **xenDaemonListDomainsOld(virConnectPtr xend);
 
-char *xenDaemonDomainGetOSType(virDomainPtr domain);
+char *xenDaemonDomainGetOSType(virConnectPtr conn,
+                               virDomainDefPtr def);
 
 int xenDaemonNumOfDefinedDomains(virConnectPtr conn);
 int xenDaemonListDefinedDomains(virConnectPtr conn,
diff --git a/src/xen/xm_internal.c b/src/xen/xm_internal.c
index f4e8ea0..ce44e39 100644
--- a/src/xen/xm_internal.c
+++ b/src/xen/xm_internal.c
@@ -446,7 +446,8 @@ xenXMClose(virConnectPtr conn)
  * Since these are all offline domains, the state is always SHUTOFF.
  */
 int
-xenXMDomainGetState(virDomainPtr domain ATTRIBUTE_UNUSED,
+xenXMDomainGetState(virConnectPtr conn ATTRIBUTE_UNUSED,
+                    virDomainDefPtr def ATTRIBUTE_UNUSED,
                     int *state,
                     int *reason)
 {
@@ -463,15 +464,17 @@ xenXMDomainGetState(virDomainPtr domain ATTRIBUTE_UNUSED,
  * VCPUs and memory.
  */
 int
-xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info)
+xenXMDomainGetInfo(virConnectPtr conn,
+                   virDomainDefPtr def,
+                   virDomainInfoPtr info)
 {
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
+    xenUnifiedPrivatePtr priv = conn->privateData;
     const char *filename;
     xenXMConfCachePtr entry;
 
     xenUnifiedLock(priv);
 
-    if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
+    if (!(filename = virHashLookup(priv->nameConfigMap, def->name)))
         goto error;
 
     if (!(entry = virHashLookup(priv->configCache, filename)))
@@ -530,9 +533,11 @@ cleanup:
  * Update amount of memory in the config file
  */
 int
-xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory)
+xenXMDomainSetMemory(virConnectPtr conn,
+                     virDomainDefPtr def,
+                     unsigned long memory)
 {
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
+    xenUnifiedPrivatePtr priv = conn->privateData;
     const char *filename;
     xenXMConfCachePtr entry;
     int ret = -1;
@@ -546,7 +551,7 @@ xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory)
 
     xenUnifiedLock(priv);
 
-    if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
+    if (!(filename = virHashLookup(priv->nameConfigMap, def->name)))
         goto cleanup;
 
     if (!(entry = virHashLookup(priv->configCache, filename)))
@@ -559,7 +564,7 @@ xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory)
     /* If this fails, should we try to undo our changes to the
      * in-memory representation of the config file. I say not!
      */
-    if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
+    if (xenXMConfigSaveFile(conn, entry->filename, entry->def) < 0)
         goto cleanup;
     ret = 0;
 
@@ -572,9 +577,11 @@ cleanup:
  * Update maximum memory limit in config
  */
 int
-xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory)
+xenXMDomainSetMaxMemory(virConnectPtr conn,
+                        virDomainDefPtr def,
+                        unsigned long memory)
 {
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
+    xenUnifiedPrivatePtr priv = conn->privateData;
     const char *filename;
     xenXMConfCachePtr entry;
     int ret = -1;
@@ -588,7 +595,7 @@ xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory)
 
     xenUnifiedLock(priv);
 
-    if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
+    if (!(filename = virHashLookup(priv->nameConfigMap, def->name)))
         goto cleanup;
 
     if (!(entry = virHashLookup(priv->configCache, filename)))
@@ -601,7 +608,7 @@ xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory)
     /* If this fails, should we try to undo our changes to the
      * in-memory representation of the config file. I say not!
      */
-    if (xenXMConfigSaveFile(domain->conn, entry->filename, entry->def) < 0)
+    if (xenXMConfigSaveFile(conn, entry->filename, entry->def) < 0)
         goto cleanup;
     ret = 0;
 
@@ -614,19 +621,17 @@ cleanup:
  * Get max memory limit from config
  */
 unsigned long long
-xenXMDomainGetMaxMemory(virDomainPtr domain)
+xenXMDomainGetMaxMemory(virConnectPtr conn,
+                        virDomainDefPtr def)
 {
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
+    xenUnifiedPrivatePtr priv = conn->privateData;
     const char *filename;
     xenXMConfCachePtr entry;
     unsigned long long ret = 0;
 
-    if (domain->id != -1)
-        return 0;
-
     xenUnifiedLock(priv);
 
-    if (!(filename = virHashLookup(priv->nameConfigMap, domain->name)))
+    if (!(filename = virHashLookup(priv->nameConfigMap, def->name)))
         goto cleanup;
 
     if (!(entry = virHashLookup(priv->configCache, filename)))
diff --git a/src/xen/xm_internal.h b/src/xen/xm_internal.h
index 0e55897..0ae32bc 100644
--- a/src/xen/xm_internal.h
+++ b/src/xen/xm_internal.h
@@ -37,14 +37,22 @@ int xenXMConfigCacheRemoveFile(virConnectPtr conn, const char *filename);
 int xenXMOpen(virConnectPtr conn, virConnectAuthPtr auth, unsigned int flags);
 int xenXMClose(virConnectPtr conn);
 const char *xenXMGetType(virConnectPtr conn);
-int xenXMDomainGetInfo(virDomainPtr domain, virDomainInfoPtr info);
-int xenXMDomainGetState(virDomainPtr domain,
+int xenXMDomainGetInfo(virConnectPtr conn,
+                       virDomainDefPtr def,
+                       virDomainInfoPtr info);
+int xenXMDomainGetState(virConnectPtr conn,
+                        virDomainDefPtr def,
                         int *state,
                         int *reason);
 char *xenXMDomainGetXMLDesc(virDomainPtr domain, unsigned int flags);
-int xenXMDomainSetMemory(virDomainPtr domain, unsigned long memory);
-int xenXMDomainSetMaxMemory(virDomainPtr domain, unsigned long memory);
-unsigned long long xenXMDomainGetMaxMemory(virDomainPtr domain);
+int xenXMDomainSetMemory(virConnectPtr conn,
+                         virDomainDefPtr def,
+                         unsigned long memory);
+int xenXMDomainSetMaxMemory(virConnectPtr conn,
+                            virDomainDefPtr def,
+                            unsigned long memory);
+unsigned long long xenXMDomainGetMaxMemory(virConnectPtr conn,
+                                           virDomainDefPtr def);
 int xenXMDomainSetVcpus(virDomainPtr domain, unsigned int vcpus);
 int xenXMDomainSetVcpusFlags(virDomainPtr domain, unsigned int vcpus,
                              unsigned int flags);
-- 
1.8.1.4

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