void virNetServerServiceClose(virNetServerServicePtr svc)
{
int i;
if (!svc)
return;
for (i = 0; i < svc->nsocks; i++) {
virNetSocketClose(svc->socks[i]);
}
}
void qemuMonitorTestFree(qemuMonitorTestPtr test)
{
size_t i;
int timer = -1;
if (!test)
return;
virMutexLock(&test->lock);
if (test->running) {
test->quit = true;
/* HACK: Add a dummy timeout to break event loop */
timer = virEventAddTimeout(0, qemuMonitorTestFreeTimer, NULL, NULL);
}
virMutexUnlock(&test->lock);
if (test->client) {
virNetSocketRemoveIOCallback(test->client);
virNetSocketClose(test->client);
virObjectUnref(test->client);
}
virObjectUnref(test->server);
if (test->mon) {
virObjectUnlock(test->mon);
qemuMonitorClose(test->mon);
}
virObjectUnref(test->vm);
virThreadJoin(&test->thread);
if (timer != -1)
virEventRemoveTimeout(timer);
VIR_FREE(test->incoming);
VIR_FREE(test->outgoing);
for (i = 0 ; i < test->nitems ; i++)
qemuMonitorTestItemFree(test->items[i]);
VIR_FREE(test->items);
if (test->tmpdir && rmdir(test->tmpdir) < 0)
VIR_WARN("Failed to remove tempdir: %s", strerror(errno));
VIR_FREE(test->tmpdir);
virMutexDestroy(&test->lock);
VIR_FREE(test);
}
static void
libxlDoMigrateReceive(virNetSocketPtr sock,
int events ATTRIBUTE_UNUSED,
void *opaque)
{
libxlMigrationDstArgs *args = opaque;
virConnectPtr conn = args->conn;
virDomainObjPtr vm = args->vm;
virNetSocketPtr *socks = args->socks;
size_t nsocks = args->nsocks;
bool paused = args->flags & VIR_MIGRATE_PAUSED;
libxlDriverPrivatePtr driver = conn->privateData;
virNetSocketPtr client_sock;
int recvfd = -1;
size_t i;
int ret;
if (virNetSocketAccept(sock, &client_sock) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("Fail to accept migration connection"));
goto cleanup;
}
VIR_DEBUG("Accepted migration connection\n");
recvfd = virNetSocketDupFD(client_sock, true);
virObjectUnref(client_sock);
virObjectLock(vm);
ret = libxlDomainStart(driver, vm, paused, recvfd);
virObjectUnlock(vm);
if (ret < 0 && !vm->persistent)
virDomainObjListRemove(driver->domains, vm);
cleanup:
/* Remove all listen socks from event handler, and close them. */
for (i = 0; i < nsocks; i++) {
virNetSocketUpdateIOCallback(socks[i], 0);
virNetSocketRemoveIOCallback(socks[i]);
virNetSocketClose(socks[i]);
virObjectUnref(socks[i]);
socks[i] = NULL;
}
args->nsocks = 0;
VIR_FORCE_CLOSE(recvfd);
}
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;
}
/*
* Handles read/write of monitor data on the monitor server side
*/
static void qemuMonitorTestIO(virNetSocketPtr sock,
int events,
void *opaque)
{
qemuMonitorTestPtr test = opaque;
bool err = false;
virMutexLock(&test->lock);
if (events & VIR_EVENT_HANDLE_WRITABLE) {
ssize_t ret;
if ((ret = virNetSocketWrite(sock,
test->outgoing,
test->outgoingLength)) < 0) {
err = true;
goto cleanup;
}
memmove(test->outgoing,
test->outgoing + ret,
test->outgoingLength - ret);
test->outgoingLength -= ret;
if ((test->outgoingCapacity - test->outgoingLength) > 1024)
VIR_SHRINK_N(test->outgoing, test->outgoingCapacity, 1024);
}
if (events & VIR_EVENT_HANDLE_READABLE) {
ssize_t ret, used;
char *t1, *t2;
if ((test->incomingCapacity - test->incomingLength) < 1024) {
if (VIR_EXPAND_N(test->incoming, test->incomingCapacity, 1024) < 0) {
err = true;
goto cleanup;
}
}
if ((ret = virNetSocketRead(sock,
test->incoming + test->incomingLength,
(test->incomingCapacity - test->incomingLength) - 1)) < 0) {
err = true;
goto cleanup;
}
test->incomingLength += ret;
test->incoming[test->incomingLength] = '\0';
/* Look to see if we've got a complete line, and
* if so, handle that command
*/
t1 = test->incoming;
while ((t2 = strstr(t1, "\r\n"))) {
*t2 = '\0';
if (qemuMonitorTestProcessCommand(test, t1) < 0) {
err = true;
goto cleanup;
}
t1 = t2 + 2;
}
used = t1 - test->incoming;
memmove(test->incoming, t1, test->incomingLength - used);
test->incomingLength -= used;
if ((test->incomingCapacity - test->incomingLength) > 1024) {
VIR_SHRINK_N(test->incoming,
test->incomingCapacity,
1024);
}
}
if (events & (VIR_EVENT_HANDLE_HANGUP |
VIR_EVENT_HANDLE_ERROR))
err = true;
cleanup:
if (err) {
virNetSocketRemoveIOCallback(sock);
virNetSocketClose(sock);
virObjectUnref(test->client);
test->client = NULL;
} else {
events = VIR_EVENT_HANDLE_READABLE;
if (test->outgoingLength)
events |= VIR_EVENT_HANDLE_WRITABLE;
virNetSocketUpdateIOCallback(sock, events);
}
virMutexUnlock(&test->lock);
}