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Switch LXC driver to use a private data blob for virDomainObj state

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* src/lxc/lxc_driver.c: Introduce lxcDomainObjPrivate for storing
  monitor device state
This commit is contained in:
Daniel P. Berrange 2009-11-26 17:56:01 +00:00
parent f248c965ce
commit e4b07fd6a5
1 changed files with 65 additions and 15 deletions
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80
src/lxc/lxc_driver.c
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@ -53,6 +53,14 @@
#define VIR_FROM_THIS VIR_FROM_LXC
typedef struct _lxcDomainObjPrivate lxcDomainObjPrivate;
typedef lxcDomainObjPrivate *lxcDomainObjPrivatePtr;
struct _lxcDomainObjPrivate {
int monitor;
int monitorWatch;
};
static int lxcStartup(int privileged);
static int lxcShutdown(void);
static lxc_driver_t *lxc_driver = NULL;
@ -68,6 +76,27 @@ static void lxcDriverUnlock(lxc_driver_t *driver)
virMutexUnlock(&driver->lock);
}
static void *lxcDomainObjPrivateAlloc(void)
{
lxcDomainObjPrivatePtr priv;
if (VIR_ALLOC(priv) < 0)
return NULL;
priv->monitor = -1;
priv->monitorWatch = -1;
return priv;
}
static void lxcDomainObjPrivateFree(void *data)
{
lxcDomainObjPrivatePtr priv = data;
VIR_FREE(priv);
}
static void lxcDomainEventFlush(int timer, void *opaque);
static void lxcDomainEventQueue(lxc_driver_t *driver,
virDomainEventPtr event);
@ -671,6 +700,7 @@ static int lxcVmCleanup(virConnectPtr conn,
int childStatus = -1;
virCgroupPtr cgroup;
int i;
lxcDomainObjPrivatePtr priv = vm->privateData;
while (((waitRc = waitpid(vm->pid, &childStatus, 0)) == -1) &&
errno == EINTR)
@ -689,8 +719,8 @@ static int lxcVmCleanup(virConnectPtr conn,
DEBUG("container exited with rc: %d", rc);
}
virEventRemoveHandle(vm->monitorWatch);
close(vm->monitor);
virEventRemoveHandle(priv->monitorWatch);
close(priv->monitor);
virFileDeletePid(driver->stateDir, vm->def->name);
virDomainDeleteConfig(conn, driver->stateDir, NULL, vm);
@ -698,7 +728,8 @@ static int lxcVmCleanup(virConnectPtr conn,
vm->state = VIR_DOMAIN_SHUTOFF;
vm->pid = -1;
vm->def->id = -1;
vm->monitor = -1;
priv->monitor = -1;
priv->monitorWatch = -1;
for (i = 0 ; i < vm->def->nnets ; i++) {
vethInterfaceUpOrDown(vm->def->nets[i]->ifname, 0);
@ -919,12 +950,15 @@ static void lxcMonitorEvent(int watch,
lxc_driver_t *driver = lxc_driver;
virDomainObjPtr vm = data;
virDomainEventPtr event = NULL;
lxcDomainObjPrivatePtr priv;
lxcDriverLock(driver);
virDomainObjLock(vm);
lxcDriverUnlock(driver);
if (vm->monitor != fd || vm->monitorWatch != watch) {
priv = vm->privateData;
if (priv->monitor != fd || priv->monitorWatch != watch) {
virEventRemoveHandle(watch);
goto cleanup;
}
@ -1157,6 +1191,7 @@ static int lxcVmStart(virConnectPtr conn,
int logfd = -1;
unsigned int nveths = 0;
char **veths = NULL;
lxcDomainObjPrivatePtr priv = vm->privateData;
if ((r = virFileMakePath(driver->logDir)) < 0) {
virReportSystemError(conn, r,
@ -1209,7 +1244,7 @@ static int lxcVmStart(virConnectPtr conn,
/* Connect to the controller as a client *first* because
* this will block until the child has written their
* pid file out to disk */
if ((vm->monitor = lxcMonitorClient(conn, driver, vm)) < 0)
if ((priv->monitor = lxcMonitorClient(conn, driver, vm)) < 0)
goto cleanup;
/* And get its pid */
@ -1223,8 +1258,8 @@ static int lxcVmStart(virConnectPtr conn,
vm->def->id = vm->pid;
vm->state = VIR_DOMAIN_RUNNING;
if ((vm->monitorWatch = virEventAddHandle(
vm->monitor,
if ((priv->monitorWatch = virEventAddHandle(
priv->monitor,
VIR_EVENT_HANDLE_ERROR | VIR_EVENT_HANDLE_HANGUP,
lxcMonitorEvent,
vm, NULL)) < 0) {
@ -1240,9 +1275,9 @@ cleanup:
vethDelete(veths[i]);
VIR_FREE(veths[i]);
}
if (rc != 0 && vm->monitor != -1) {
close(vm->monitor);
vm->monitor = -1;
if (rc != 0 && priv->monitor != -1) {
close(priv->monitor);
priv->monitor = -1;
}
if (parentTty != -1)
close(parentTty);
@ -1610,16 +1645,19 @@ lxcReconnectVM(void *payload, const char *name ATTRIBUTE_UNUSED, void *opaque)
lxc_driver_t *driver = opaque;
char *config = NULL;
virDomainDefPtr tmp;
lxcDomainObjPrivatePtr priv;
virDomainObjLock(vm);
if ((vm->monitor = lxcMonitorClient(NULL, driver, vm)) < 0) {
priv = vm->privateData;
if ((priv->monitor = lxcMonitorClient(NULL, driver, vm)) < 0) {
goto cleanup;
}
/* Read pid from controller */
if ((virFileReadPid(lxc_driver->stateDir, vm->def->name, &vm->pid)) != 0) {
close(vm->monitor);
vm->monitor = -1;
close(priv->monitor);
priv->monitor = -1;
goto cleanup;
}
@ -1639,10 +1677,19 @@ lxcReconnectVM(void *payload, const char *name ATTRIBUTE_UNUSED, void *opaque)
if (vm->pid != 0) {
vm->def->id = vm->pid;
vm->state = VIR_DOMAIN_RUNNING;
if ((priv->monitorWatch = virEventAddHandle(
priv->monitor,
VIR_EVENT_HANDLE_ERROR | VIR_EVENT_HANDLE_HANGUP,
lxcMonitorEvent,
vm, NULL)) < 0) {
lxcVmTerminate(NULL, driver, vm, 0);
goto cleanup;
}
} else {
vm->def->id = -1;
close(vm->monitor);
vm->monitor = -1;
close(priv->monitor);
priv->monitor = -1;
}
cleanup:
@ -1715,6 +1762,9 @@ static int lxcStartup(int privileged)
if ((lxc_driver->caps = lxcCapsInit()) == NULL)
goto cleanup;
lxc_driver->caps->privateDataAllocFunc = lxcDomainObjPrivateAlloc;
lxc_driver->caps->privateDataFreeFunc = lxcDomainObjPrivateFree;
if (virDomainLoadAllConfigs(NULL,
lxc_driver->caps,
&lxc_driver->domains,