/**
* virReleaseConnect:
* @conn: the hypervisor connection to release
*
* Unconditionally release all memory associated with a connection.
* The conn.lock mutex must be held prior to calling this, and will
* be released prior to this returning. The connection obj must not
* be used once this method returns.
*/
static void
virReleaseConnect(virConnectPtr conn) {
VIR_DEBUG("release connection %p", conn);
/* make sure to release the connection lock before we call the
* close callbacks, otherwise we will deadlock if an error
* is raised by any of the callbacks */
virMutexUnlock(&conn->lock);
if (conn->networkDriver)
conn->networkDriver->close(conn);
if (conn->interfaceDriver)
conn->interfaceDriver->close(conn);
if (conn->storageDriver)
conn->storageDriver->close(conn);
if (conn->deviceMonitor)
conn->deviceMonitor->close(conn);
if (conn->secretDriver)
conn->secretDriver->close(conn);
if (conn->nwfilterDriver)
conn->nwfilterDriver->close(conn);
if (conn->driver)
conn->driver->close(conn);
virMutexLock(&conn->lock);
virResetError(&conn->err);
virURIFree(conn->uri);
virMutexUnlock(&conn->lock);
virMutexDestroy(&conn->lock);
VIR_FREE(conn);
}
static void
virAdmConnectDispose(void *obj)
{
virAdmConnectPtr conn = obj;
if (conn->privateDataFreeFunc)
conn->privateDataFreeFunc(conn);
virURIFree(conn->uri);
virObjectUnref(conn->closeCallback);
}
/**
* virConnectDispose:
* @obj: the hypervisor connection to release
*
* Unconditionally release all memory associated with a connection.
* The connection object must not be used once this method returns.
*/
static void
virConnectDispose(void *obj)
{
virConnectPtr conn = obj;
if (conn->driver)
conn->driver->connectClose(conn);
virResetError(&conn->err);
virURIFree(conn->uri);
}
/**
* virConnectDispose:
* @conn: the hypervisor connection to release
*
* Unconditionally release all memory associated with a connection.
* The conn.lock mutex must be held prior to calling this, and will
* be released prior to this returning. The connection obj must not
* be used once this method returns.
*/
static void
virConnectDispose(void *obj)
{
virConnectPtr conn = obj;
if (conn->networkDriver)
conn->networkDriver->networkClose(conn);
if (conn->interfaceDriver)
conn->interfaceDriver->interfaceClose(conn);
if (conn->storageDriver)
conn->storageDriver->storageClose(conn);
if (conn->nodeDeviceDriver)
conn->nodeDeviceDriver->nodeDeviceClose(conn);
if (conn->secretDriver)
conn->secretDriver->secretClose(conn);
if (conn->nwfilterDriver)
conn->nwfilterDriver->nwfilterClose(conn);
if (conn->driver)
conn->driver->connectClose(conn);
virMutexLock(&conn->lock);
virResetError(&conn->err);
virURIFree(conn->uri);
if (conn->closeCallback) {
virObjectLock(conn->closeCallback);
conn->closeCallback->callback = NULL;
virObjectUnlock(conn->closeCallback);
virObjectUnref(conn->closeCallback);
}
virMutexUnlock(&conn->lock);
virMutexDestroy(&conn->lock);
}
static int testURIParse(const void *args)
{
int ret = -1;
virURIPtr uri = NULL;
const struct URIParseData *data = args;
char *uristr = NULL;
size_t i;
if (!(uri = virURIParse(data->uri)))
goto cleanup;
if (!STREQ(uri->scheme, data->scheme)) {
VIR_DEBUG("Expected scheme '%s', actual '%s'",
data->scheme, uri->scheme);
goto cleanup;
}
if (!STREQ(uri->server, data->server)) {
VIR_DEBUG("Expected server '%s', actual '%s'",
data->server, uri->server);
goto cleanup;
}
if (uri->port != data->port) {
VIR_DEBUG("Expected port '%d', actual '%d'",
data->port, uri->port);
goto cleanup;
}
if (!STREQ_NULLABLE(uri->path, data->path)) {
VIR_DEBUG("Expected path '%s', actual '%s'",
data->path, uri->path);
goto cleanup;
}
if (!STREQ_NULLABLE(uri->query, data->query)) {
VIR_DEBUG("Expected query '%s', actual '%s'",
data->query, uri->query);
goto cleanup;
}
if (!STREQ_NULLABLE(uri->fragment, data->fragment)) {
VIR_DEBUG("Expected fragment '%s', actual '%s'",
data->fragment, uri->fragment);
goto cleanup;
}
for (i = 0; data->params && data->params[i].name && i < uri->paramsCount; i++) {
if (!STREQ_NULLABLE(data->params[i].name, uri->params[i].name)) {
VIR_DEBUG("Expected param name %zu '%s', actual '%s'",
i, data->params[i].name, uri->params[i].name);
goto cleanup;
}
if (!STREQ_NULLABLE(data->params[i].value, uri->params[i].value)) {
VIR_DEBUG("Expected param value %zu '%s', actual '%s'",
i, data->params[i].value, uri->params[i].value);
goto cleanup;
}
}
if (data->params && data->params[i].name) {
VIR_DEBUG("Missing parameter %zu %s=%s",
i, data->params[i].name, data->params[i].value);
goto cleanup;
}
if (i != uri->paramsCount) {
VIR_DEBUG("Unexpected parameter %zu %s=%s",
i, uri->params[i].name, uri->params[i].value);
goto cleanup;
}
VIR_FREE(uri->query);
uri->query = virURIFormatParams(uri);
if (!(uristr = virURIFormat(uri)))
goto cleanup;
if (!STREQ(uristr, data->uri_out)) {
VIR_DEBUG("URI did not roundtrip, expect '%s', actual '%s'",
data->uri_out, uristr);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(uristr);
virURIFree(uri);
return ret;
}
int
libxlDomainMigrationPrepare(virConnectPtr dconn,
virDomainDefPtr def,
const char *uri_in,
char **uri_out,
unsigned int flags)
{
libxlDriverPrivatePtr driver = dconn->privateData;
virDomainObjPtr vm = NULL;
char *hostname = NULL;
unsigned short port;
char portstr[100];
virURIPtr uri = NULL;
virNetSocketPtr *socks = NULL;
size_t nsocks = 0;
int nsocks_listen = 0;
libxlMigrationDstArgs *args;
size_t i;
int ret = -1;
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
VIR_DOMAIN_OBJ_LIST_ADD_LIVE |
VIR_DOMAIN_OBJ_LIST_ADD_CHECK_LIVE,
NULL)))
goto cleanup;
/* Create socket connection to receive migration data */
if (!uri_in) {
if ((hostname = virGetHostname()) == NULL)
goto cleanup;
if (STRPREFIX(hostname, "localhost")) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("hostname on destination resolved to localhost,"
" but migration requires an FQDN"));
goto cleanup;
}
if (virPortAllocatorAcquire(driver->migrationPorts, &port) < 0)
goto cleanup;
if (virAsprintf(uri_out, "tcp://%s:%d", hostname, port) < 0)
goto cleanup;
} else {
if (!(STRPREFIX(uri_in, "tcp://"))) {
/* not full URI, add prefix tcp:// */
char *tmp;
if (virAsprintf(&tmp, "tcp://%s", uri_in) < 0)
goto cleanup;
uri = virURIParse(tmp);
VIR_FREE(tmp);
} else {
uri = virURIParse(uri_in);
}
if (uri == NULL) {
virReportError(VIR_ERR_INVALID_ARG,
_("unable to parse URI: %s"),
uri_in);
goto cleanup;
}
if (uri->server == NULL) {
virReportError(VIR_ERR_INVALID_ARG,
_("missing host in migration URI: %s"),
uri_in);
goto cleanup;
} else {
hostname = uri->server;
}
if (uri->port == 0) {
if (virPortAllocatorAcquire(driver->migrationPorts, &port) < 0)
goto cleanup;
} else {
port = uri->port;
}
if (virAsprintf(uri_out, "tcp://%s:%d", hostname, port) < 0)
goto cleanup;
}
snprintf(portstr, sizeof(portstr), "%d", port);
if (virNetSocketNewListenTCP(hostname, portstr, &socks, &nsocks) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Fail to create socket for incoming migration"));
goto cleanup;
}
if (libxlMigrationDstArgsInitialize() < 0)
goto cleanup;
if (!(args = virObjectNew(libxlMigrationDstArgsClass)))
goto cleanup;
args->conn = dconn;
args->vm = vm;
args->flags = flags;
args->socks = socks;
args->nsocks = nsocks;
for (i = 0; i < nsocks; i++) {
if (virNetSocketSetBlocking(socks[i], true) < 0)
continue;
if (virNetSocketListen(socks[i], 1) < 0)
continue;
if (virNetSocketAddIOCallback(socks[i],
VIR_EVENT_HANDLE_READABLE,
libxlDoMigrateReceive,
args,
virObjectFreeCallback) < 0)
continue;
/*
* Successfully added sock to event loop. Take a ref on args to
* ensure it is not freed until sock is removed from the event loop.
* Ref is dropped in virObjectFreeCallback after being removed
* from the event loop.
*/
virObjectRef(args);
nsocks_listen++;
}
/* Done with args in this function, drop reference */
virObjectUnref(args);
if (!nsocks_listen)
goto cleanup;
ret = 0;
goto done;
cleanup:
for (i = 0; i < nsocks; i++) {
virNetSocketClose(socks[i]);
virObjectUnref(socks[i]);
}
done:
virURIFree(uri);
if (vm)
virObjectUnlock(vm);
return ret;
}
static char *
getSocketPath(const char *name)
{
char *rundir = virGetUserRuntimeDirectory();
char *sock_path = NULL;
size_t i = 0;
virURIPtr uri = NULL;
if (name) {
if (!(uri = virURIParse(name)))
goto error;
if (STRNEQ(uri->scheme, "admin") ||
uri->server || uri->user || uri->fragment) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Invalid connection name '%s'"), name);
goto error;
}
for (i = 0; i < uri->paramsCount; i++) {
virURIParamPtr param = &uri->params[i];
if (STREQ(param->name, "socket")) {
VIR_FREE(sock_path);
if (VIR_STRDUP(sock_path, param->value) < 0)
goto error;
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Unknown URI parameter '%s'"), param->name);
goto error;
}
}
}
if (!sock_path) {
if (!uri || !uri->path || STREQ(uri->path, "/system")) {
if (VIR_STRDUP(sock_path, LIBVIRTD_ADMIN_UNIX_SOCKET) < 0)
goto error;
} else if (STREQ_NULLABLE(uri->path, "/session")) {
if (!rundir)
goto error;
if (virAsprintf(&sock_path,
"%s%s", rundir, LIBVIRTD_ADMIN_SOCK_NAME) < 0)
goto error;
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Invalid URI path '%s'"), uri->path);
goto error;
}
}
cleanup:
VIR_FREE(rundir);
virURIFree(uri);
return sock_path;
error:
VIR_FREE(sock_path);
goto cleanup;
}
