libxl: Use id from virDomainObj inside the driver

There is a domain id in the virDomain structure as well as in the
virDomainObj structure. While the former can become stale the latter
is kept up to date. So it is safer to always (virDomainObjPtr)->def->id
internally.

This will fix issues seen when managing Xen guests through libvirt from
virt-manager (not being able to get domain info after define or reboot).
This was caused both though libxlDomainGetInfo() only but there were
a lot of places that might potentially cause issues, too.
Signed-off-by: NStefan Bader <stefan.bader@canonical.com>

src/libxl/libxl_driver.c

@@ -770,10 +770,10 @@ libxlDomainSuspend(virDomainPtr dom)
     priv = vm->privateData;
 
     if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_PAUSED) {
-        if (libxl_domain_pause(priv->ctx, dom->id) != 0) {
+        if (libxl_domain_pause(priv->ctx, vm->def->id) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Failed to suspend domain '%d' with libxenlight"),
-                           dom->id);
+                           vm->def->id);
             goto endjob;
         }
 
@@ -829,10 +829,10 @@ libxlDomainResume(virDomainPtr dom)
     priv = vm->privateData;
 
     if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_PAUSED) {
-        if (libxl_domain_unpause(priv->ctx, dom->id) != 0) {
+        if (libxl_domain_unpause(priv->ctx, vm->def->id) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Failed to resume domain '%d' with libxenlight"),
-                           dom->id);
+                           vm->def->id);
             goto endjob;
         }
 
@@ -883,10 +883,10 @@ libxlDomainShutdownFlags(virDomainPtr dom, unsigned int flags)
     }
 
     priv = vm->privateData;
-    if (libxl_domain_shutdown(priv->ctx, dom->id) != 0) {
+    if (libxl_domain_shutdown(priv->ctx, vm->def->id) != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to shutdown domain '%d' with libxenlight"),
-                       dom->id);
+                       vm->def->id);
         goto cleanup;
     }
 
@@ -930,10 +930,10 @@ libxlDomainReboot(virDomainPtr dom, unsigned int flags)
     }
 
     priv = vm->privateData;
-    if (libxl_domain_reboot(priv->ctx, dom->id) != 0) {
+    if (libxl_domain_reboot(priv->ctx, vm->def->id) != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to reboot domain '%d' with libxenlight"),
-                       dom->id);
+                       vm->def->id);
         goto cleanup;
     }
     ret = 0;
@@ -974,7 +974,7 @@ libxlDomainDestroyFlags(virDomainPtr dom,
     priv = vm->privateData;
     if (libxl_domain_destroy(priv->ctx, vm->def->id, NULL) < 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
-                       _("Failed to destroy domain '%d'"), dom->id);
+                       _("Failed to destroy domain '%d'"), vm->def->id);
         goto cleanup;
     }
 
@@ -1105,10 +1105,10 @@ libxlDomainSetMemoryFlags(virDomainPtr dom, unsigned long newmem,
 
         if (flags & VIR_DOMAIN_MEM_LIVE) {
             priv = vm->privateData;
-            if (libxl_domain_setmaxmem(priv->ctx, dom->id, newmem) < 0) {
+            if (libxl_domain_setmaxmem(priv->ctx, vm->def->id, newmem) < 0) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                _("Failed to set maximum memory for domain '%d'"
-                                 " with libxenlight"), dom->id);
+                                 " with libxenlight"), vm->def->id);
                 goto endjob;
             }
         }
@@ -1138,13 +1138,13 @@ libxlDomainSetMemoryFlags(virDomainPtr dom, unsigned long newmem,
             priv = vm->privateData;
             /* Unlock virDomainObj while ballooning memory */
             virObjectUnlock(vm);
-            res = libxl_set_memory_target(priv->ctx, dom->id, newmem, 0,
+            res = libxl_set_memory_target(priv->ctx, vm->def->id, newmem, 0,
                                           /* force */ 1);
             virObjectLock(vm);
             if (res < 0) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                _("Failed to set memory for domain '%d'"
-                                 " with libxenlight"), dom->id);
+                                 " with libxenlight"), vm->def->id);
                 goto endjob;
             }
         }
@@ -1202,9 +1202,10 @@ libxlDomainGetInfo(virDomainPtr dom, virDomainInfoPtr info)
         info->memory = vm->def->mem.cur_balloon;
         info->maxMem = vm->def->mem.max_balloon;
     } else {
-        if (libxl_domain_info(priv->ctx, &d_info, dom->id) != 0) {
+        if (libxl_domain_info(priv->ctx, &d_info, vm->def->id) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
-                           _("libxl_domain_info failed for domain '%d'"), dom->id);
+                           _("libxl_domain_info failed for domain '%d'"),
+                           vm->def->id);
             goto cleanup;
         }
         info->cpuTime = d_info.cpu_time;
@@ -1483,11 +1484,11 @@ libxlDomainCoreDump(virDomainPtr dom, const char *to, unsigned int flags)
 
     if (!(flags & VIR_DUMP_LIVE) &&
         virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
-        if (libxl_domain_pause(priv->ctx, dom->id) != 0) {
+        if (libxl_domain_pause(priv->ctx, vm->def->id) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Before dumping core, failed to suspend domain '%d'"
                              " with libxenlight"),
-                           dom->id);
+                           vm->def->id);
             goto endjob;
         }
         virDomainObjSetState(vm, VIR_DOMAIN_PAUSED, VIR_DOMAIN_PAUSED_DUMP);
@@ -1496,20 +1497,20 @@ libxlDomainCoreDump(virDomainPtr dom, const char *to, unsigned int flags)
 
     /* Unlock virDomainObj while dumping core */
     virObjectUnlock(vm);
-    ret = libxl_domain_core_dump(priv->ctx, dom->id, to, NULL);
+    ret = libxl_domain_core_dump(priv->ctx, vm->def->id, to, NULL);
     virObjectLock(vm);
     if (ret != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to dump core of domain '%d' with libxenlight"),
-                       dom->id);
+                       vm->def->id);
         ret = -1;
         goto unpause;
     }
 
     if (flags & VIR_DUMP_CRASH) {
-        if (libxl_domain_destroy(priv->ctx, dom->id, NULL) < 0) {
+        if (libxl_domain_destroy(priv->ctx, vm->def->id, NULL) < 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
-                           _("Failed to destroy domain '%d'"), dom->id);
+                           _("Failed to destroy domain '%d'"), vm->def->id);
             goto unpause;
         }
 
@@ -1524,10 +1525,10 @@ libxlDomainCoreDump(virDomainPtr dom, const char *to, unsigned int flags)
 
  unpause:
     if (virDomainObjIsActive(vm) && paused) {
-        if (libxl_domain_unpause(priv->ctx, dom->id) != 0) {
+        if (libxl_domain_unpause(priv->ctx, vm->def->id) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("After dumping core, failed to resume domain '%d' with"
-                             " libxenlight"), dom->id);
+                             " libxenlight"), vm->def->id);
         } else {
             virDomainObjSetState(vm, VIR_DOMAIN_RUNNING,
                                  VIR_DOMAIN_RUNNING_UNPAUSED);
@@ -1786,19 +1787,19 @@ libxlDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
         break;
 
     case VIR_DOMAIN_VCPU_LIVE:
-        if (libxl_set_vcpuonline(priv->ctx, dom->id, &map) != 0) {
+        if (libxl_set_vcpuonline(priv->ctx, vm->def->id, &map) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Failed to set vcpus for domain '%d'"
-                             " with libxenlight"), dom->id);
+                             " with libxenlight"), vm->def->id);
             goto endjob;
         }
         break;
 
     case VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG:
-        if (libxl_set_vcpuonline(priv->ctx, dom->id, &map) != 0) {
+        if (libxl_set_vcpuonline(priv->ctx, vm->def->id, &map) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Failed to set vcpus for domain '%d'"
-                             " with libxenlight"), dom->id);
+                             " with libxenlight"), vm->def->id);
             goto endjob;
         }
         def->vcpus = nvcpus;
@@ -1934,7 +1935,7 @@ libxlDomainPinVcpuFlags(virDomainPtr dom, unsigned int vcpu,
         libxlDomainObjPrivatePtr priv;
 
         priv = vm->privateData;
-        if (libxl_set_vcpuaffinity(priv->ctx, dom->id, vcpu, &map) != 0) {
+        if (libxl_set_vcpuaffinity(priv->ctx, vm->def->id, vcpu, &map) != 0) {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("Failed to pin vcpu '%d' with libxenlight"),
                            vcpu);
@@ -2099,11 +2100,11 @@ libxlDomainGetVcpus(virDomainPtr dom, virVcpuInfoPtr info, int maxinfo,
     }
 
     priv = vm->privateData;
-    if ((vcpuinfo = libxl_list_vcpu(priv->ctx, dom->id, &maxcpu,
+    if ((vcpuinfo = libxl_list_vcpu(priv->ctx, vm->def->id, &maxcpu,
                                     &hostcpus)) == NULL) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to list vcpus for domain '%d' with libxenlight"),
-                       dom->id);
+                       vm->def->id);
         goto cleanup;
     }
 
@@ -3608,7 +3609,7 @@ libxlDomainGetSchedulerType(virDomainPtr dom, int *nparams)
     default:
         virReportError(VIR_ERR_INTERNAL_ERROR,
                    _("Failed to get scheduler id for domain '%d'"
-                     " with libxenlight"), dom->id);
+                     " with libxenlight"), vm->def->id);
         goto cleanup;
     }
 
@@ -3659,10 +3660,10 @@ libxlDomainGetSchedulerParametersFlags(virDomainPtr dom,
         goto cleanup;
     }
 
-    if (libxl_domain_sched_params_get(priv->ctx, dom->id, &sc_info) != 0) {
+    if (libxl_domain_sched_params_get(priv->ctx, vm->def->id, &sc_info) != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to get scheduler parameters for domain '%d'"
-                         " with libxenlight"), dom->id);
+                         " with libxenlight"), vm->def->id);
         goto cleanup;
     }
 
@@ -3740,10 +3741,10 @@ libxlDomainSetSchedulerParametersFlags(virDomainPtr dom,
         goto endjob;
     }
 
-    if (libxl_domain_sched_params_get(priv->ctx, dom->id, &sc_info) != 0) {
+    if (libxl_domain_sched_params_get(priv->ctx, vm->def->id, &sc_info) != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to get scheduler parameters for domain '%d'"
-                         " with libxenlight"), dom->id);
+                         " with libxenlight"), vm->def->id);
         goto endjob;
     }
 
@@ -3756,10 +3757,10 @@ libxlDomainSetSchedulerParametersFlags(virDomainPtr dom,
             sc_info.cap = params[i].value.ui;
     }
 
-    if (libxl_domain_sched_params_set(priv->ctx, dom->id, &sc_info) != 0) {
+    if (libxl_domain_sched_params_set(priv->ctx, vm->def->id, &sc_info) != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Failed to set scheduler parameters for domain '%d'"
-                         " with libxenlight"), dom->id);
+                         " with libxenlight"), vm->def->id);
         goto endjob;
     }