static void nic_setup(libxl__egc *egc, libxl__checkpoint_device *dev)
{
int rc;
libxl__remus_device_nic *remus_nic;
const libxl_device_nic *nic = dev->backend_dev;
STATE_AO_GC(dev->cds->ao);
/*
* thers's no subkind of nic devices, so nic ops is always matched
* with nic devices
*/
dev->matched = true;
GCNEW(remus_nic);
dev->concrete_data = remus_nic;
remus_nic->devid = nic->devid;
remus_nic->vif = get_vifname(dev, nic);
if (!remus_nic->vif) {
rc = ERROR_FAIL;
goto out;
}
setup_async_exec(dev, "setup");
rc = libxl__async_exec_start(&dev->aodev.aes);
if (rc)
goto out;
return;
out:
dev->aodev.rc = rc;
dev->aodev.callback(egc, &dev->aodev);
}
static void match_async_exec_cb(libxl__egc *egc,
libxl__async_exec_state *aes,
int status)
{
int rc;
libxl__ao_device *aodev = CONTAINER_OF(aes, *aodev, aes);
libxl__remus_device *dev = CONTAINER_OF(aodev, *dev, aodev);
libxl__remus_drbd_disk *drbd_disk;
const libxl_device_disk *disk = dev->backend_dev;
STATE_AO_GC(aodev->ao);
if (status) {
rc = ERROR_REMUS_DEVOPS_DOES_NOT_MATCH;
goto out;
}
/* ops matched */
dev->matched = true;
GCNEW(drbd_disk);
dev->concrete_data = drbd_disk;
drbd_disk->ackwait = 0;
drbd_disk->ctl_fd = open(disk->pdev_path, O_RDONLY);
if (drbd_disk->ctl_fd < 0) {
rc = ERROR_FAIL;
goto out;
}
rc = 0;
out:
aodev->rc = rc;
aodev->callback(egc, aodev);
}
static libxl__checkpoint_device* checkpoint_device_init(libxl__egc *egc,
libxl__checkpoint_devices_state *cds,
libxl__device_kind kind,
void *libxl_dev)
{
libxl__checkpoint_device *dev = NULL;
STATE_AO_GC(cds->ao);
GCNEW(dev);
dev->backend_dev = libxl_dev;
dev->kind = kind;
dev->cds = cds;
return dev;
}
static libxl__remus_device* remus_device_init(libxl__egc *egc,
libxl__remus_devices_state *rds,
libxl__device_kind kind,
void *libxl_dev)
{
libxl__remus_device *dev = NULL;
STATE_AO_GC(rds->ao);
GCNEW(dev);
dev->backend_dev = libxl_dev;
dev->kind = kind;
dev->rds = rds;
return dev;
}
static int do_domain_create(libxl_ctx *ctx, libxl_domain_config *d_config,
uint32_t *domid,
int restore_fd, const libxl_asyncop_how *ao_how,
const libxl_asyncprogress_how *aop_console_how)
{
AO_CREATE(ctx, 0, ao_how);
libxl__app_domain_create_state *cdcs;
GCNEW(cdcs);
cdcs->dcs.ao = ao;
cdcs->dcs.guest_config = d_config;
cdcs->dcs.restore_fd = restore_fd;
cdcs->dcs.callback = domain_create_cb;
libxl__ao_progress_gethow(&cdcs->dcs.aop_console_how, aop_console_how);
cdcs->domid_out = domid;
initiate_domain_create(egc, &cdcs->dcs);
return AO_INPROGRESS;
}
static void match_async_exec_cb(libxl__egc *egc,
libxl__async_exec_state *aes,
int rc, int status)
{
libxl__ao_device *aodev = CONTAINER_OF(aes, *aodev, aes);
libxl__remus_device *dev = CONTAINER_OF(aodev, *dev, aodev);
libxl__remus_drbd_disk *drbd_disk;
const libxl_device_disk *disk = dev->backend_dev;
STATE_AO_GC(aodev->ao);
if (rc)
goto out;
if (status) {
rc = ERROR_REMUS_DEVOPS_DOES_NOT_MATCH;
/* BUG: seems to assume that any exit status means `no match' */
/* BUG: exit status will have been logged as an error */
goto out;
}
/* ops matched */
dev->matched = true;
GCNEW(drbd_disk);
dev->concrete_data = drbd_disk;
drbd_disk->ackwait = 0;
drbd_disk->ctl_fd = open(disk->pdev_path, O_RDONLY);
if (drbd_disk->ctl_fd < 0) {
rc = ERROR_FAIL;
goto out;
}
rc = 0;
out:
aodev->rc = rc;
aodev->callback(egc, aodev);
}
void libxl__spawn_stub_dm(libxl__egc *egc, libxl__stub_dm_spawn_state *sdss)
{
STATE_AO_GC(sdss->dm.spawn.ao);
libxl_ctx *ctx = libxl__gc_owner(gc);
int ret;
libxl_device_vfb *vfb;
libxl_device_vkb *vkb;
char **args;
struct xs_permissions perm[2];
xs_transaction_t t;
/* convenience aliases */
libxl_domain_config *const dm_config = &sdss->dm_config;
libxl_domain_config *const guest_config = sdss->dm.guest_config;
const int guest_domid = sdss->dm.guest_domid;
libxl__domain_build_state *const d_state = sdss->dm.build_state;
libxl__domain_build_state *const stubdom_state = &sdss->dm_state;
if (guest_config->b_info.device_model_version !=
LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL) {
ret = ERROR_INVAL;
goto out;
}
sdss->pvqemu.guest_domid = 0;
libxl_domain_create_info_init(&dm_config->c_info);
dm_config->c_info.type = LIBXL_DOMAIN_TYPE_PV;
dm_config->c_info.name = libxl__stub_dm_name(gc,
libxl__domid_to_name(gc, guest_domid));
dm_config->c_info.ssidref = guest_config->b_info.device_model_ssidref;
libxl_uuid_generate(&dm_config->c_info.uuid);
libxl_domain_build_info_init(&dm_config->b_info);
libxl_domain_build_info_init_type(&dm_config->b_info, LIBXL_DOMAIN_TYPE_PV);
dm_config->b_info.max_vcpus = 1;
dm_config->b_info.max_memkb = 32 * 1024;
dm_config->b_info.target_memkb = dm_config->b_info.max_memkb;
dm_config->b_info.u.pv.features = "";
dm_config->b_info.device_model_version =
guest_config->b_info.device_model_version;
dm_config->b_info.device_model =
guest_config->b_info.device_model;
dm_config->b_info.extra = guest_config->b_info.extra;
dm_config->b_info.extra_pv = guest_config->b_info.extra_pv;
dm_config->b_info.extra_hvm = guest_config->b_info.extra_hvm;
dm_config->disks = guest_config->disks;
dm_config->num_disks = guest_config->num_disks;
libxl__dm_vifs_from_hvm_guest_config(gc, guest_config, dm_config);
dm_config->c_info.run_hotplug_scripts =
guest_config->c_info.run_hotplug_scripts;
ret = libxl__domain_create_info_setdefault(gc, &dm_config->c_info);
if (ret) goto out;
ret = libxl__domain_build_info_setdefault(gc, &dm_config->b_info);
if (ret) goto out;
GCNEW(vfb);
GCNEW(vkb);
libxl__vfb_and_vkb_from_hvm_guest_config(gc, guest_config, vfb, vkb);
dm_config->vfbs = vfb;
dm_config->num_vfbs = 1;
dm_config->vkbs = vkb;
dm_config->num_vkbs = 1;
stubdom_state->pv_kernel.path
= libxl__abs_path(gc, "ioemu-stubdom.gz", libxl__xenfirmwaredir_path());
stubdom_state->pv_cmdline = libxl__sprintf(gc, " -d %d", guest_domid);
stubdom_state->pv_ramdisk.path = "";
/* fixme: this function can leak the stubdom if it fails */
ret = libxl__domain_make(gc, &dm_config->c_info, &sdss->pvqemu.guest_domid);
if (ret)
goto out;
uint32_t dm_domid = sdss->pvqemu.guest_domid;
ret = libxl__domain_build(gc, dm_config, dm_domid, stubdom_state);
if (ret)
goto out;
args = libxl__build_device_model_args(gc, "stubdom-dm", guest_domid,
guest_config, d_state);
if (!args) {
ret = ERROR_FAIL;
goto out;
}
libxl__write_stub_dmargs(gc, dm_domid, guest_domid, args);
libxl__xs_write(gc, XBT_NULL,
libxl__sprintf(gc, "%s/image/device-model-domid",
libxl__xs_get_dompath(gc, guest_domid)),
"%d", dm_domid);
libxl__xs_write(gc, XBT_NULL,
libxl__sprintf(gc, "%s/target",
libxl__xs_get_dompath(gc, dm_domid)),
"%d", guest_domid);
ret = xc_domain_set_target(ctx->xch, dm_domid, guest_domid);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"setting target domain %d -> %d",
dm_domid, guest_domid);
ret = ERROR_FAIL;
goto out;
}
xs_set_target(ctx->xsh, dm_domid, guest_domid);
perm[0].id = dm_domid;
perm[0].perms = XS_PERM_NONE;
perm[1].id = guest_domid;
perm[1].perms = XS_PERM_READ;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
xs_mkdir(ctx->xsh, t,
libxl__sprintf(gc, "/local/domain/0/device-model/%d", guest_domid));
xs_set_permissions(ctx->xsh, t,
libxl__sprintf(gc, "/local/domain/0/device-model/%d", guest_domid),
perm, ARRAY_SIZE(perm));
if (!xs_transaction_end(ctx->xsh, t, 0))
if (errno == EAGAIN)
goto retry_transaction;
libxl__multidev_begin(ao, &sdss->multidev);
sdss->multidev.callback = spawn_stub_launch_dm;
libxl__add_disks(egc, ao, dm_domid, dm_config, &sdss->multidev);
libxl__multidev_prepared(egc, &sdss->multidev, 0);
return;
out:
assert(ret);
spawn_stubdom_pvqemu_cb(egc, &sdss->pvqemu, ret);
}
void libxl__colo_restore_setup(libxl__egc *egc,
libxl__colo_restore_state *crs)
{
libxl__domain_create_state *dcs = CONTAINER_OF(crs, *dcs, crs);
libxl__colo_restore_checkpoint_state *crcs;
int rc = ERROR_FAIL;
/* Convenience aliases */
libxl__srm_restore_autogen_callbacks *const callbacks =
&dcs->srs.shs.callbacks.restore.a;
const int domid = crs->domid;
STATE_AO_GC(crs->ao);
GCNEW(crcs);
crs->crcs = crcs;
crcs->crs = crs;
crs->qdisk_setuped = false;
crs->qdisk_used = false;
if (dcs->colo_proxy_script)
crs->colo_proxy_script = libxl__strdup(gc, dcs->colo_proxy_script);
else
crs->colo_proxy_script = GCSPRINTF("%s/colo-proxy-setup",
libxl__xen_script_dir_path());
/* setup dsps */
crcs->dsps.ao = ao;
crcs->dsps.domid = domid;
if (init_dsps(&crcs->dsps))
goto out;
callbacks->postcopy = libxl__colo_restore_domain_resume_callback;
callbacks->wait_checkpoint = libxl__colo_restore_domain_wait_checkpoint_callback;
callbacks->suspend = libxl__colo_restore_domain_suspend_callback;
callbacks->checkpoint = libxl__colo_restore_domain_checkpoint_callback;
/*
* Secondary vm is running in colo mode, so we need to call
* libxl__xc_domain_restore_done() to create secondary vm.
* But we will exit in domain_create_cb(). So replace the
* callback here.
*/
crs->saved_cb = dcs->callback;
dcs->callback = libxl__colo_domain_create_cb;
crcs->state_file = GCSPRINTF(LIBXL_DEVICE_MODEL_RESTORE_FILE".%d", domid);
crcs->status = LIBXL_COLO_SETUPED;
libxl__logdirty_init(&crcs->lds);
crcs->lds.ao = ao;
crcs->sws.fd = crs->send_back_fd;
crcs->sws.ao = ao;
crcs->sws.back_channel = true;
dcs->cds.concrete_data = crs;
libxl__stream_write_start(egc, &crcs->sws);
rc = 0;
out:
crs->callback(egc, crs, rc);
return;
}
void Proxy::Constructor(Engine* eng, Type* type, Value& res)
{
Proxy* p = 0;
GCNEW(eng, Proxy, p, (eng, type));
res.Set(p);
}
static void libxl__device_nic_add(libxl__egc *egc, uint32_t domid,
libxl_device_nic *nic,
libxl__ao_device *aodev)
{
STATE_AO_GC(aodev->ao);
flexarray_t *front;
flexarray_t *back;
libxl__device *device;
int rc;
xs_transaction_t t = XBT_NULL;
libxl_domain_config d_config;
libxl_device_nic nic_saved;
libxl__domain_userdata_lock *lock = NULL;
libxl_domain_config_init(&d_config);
libxl_device_nic_init(&nic_saved);
libxl_device_nic_copy(CTX, &nic_saved, nic);
rc = libxl__device_nic_setdefault(gc, nic, domid, aodev->update_json);
if (rc) goto out;
front = flexarray_make(gc, 16, 1);
back = flexarray_make(gc, 18, 1);
if (nic->devid == -1) {
if ((nic->devid = libxl__device_nextid(gc, domid, "vif")) < 0) {
rc = ERROR_FAIL;
goto out;
}
}
libxl__update_config_nic(gc, &nic_saved, nic);
GCNEW(device);
rc = libxl__device_from_nic(gc, domid, nic, device);
if ( rc != 0 ) goto out;
flexarray_append(back, "frontend-id");
flexarray_append(back, GCSPRINTF("%d", domid));
flexarray_append(back, "online");
flexarray_append(back, "1");
flexarray_append(back, "state");
flexarray_append(back, GCSPRINTF("%d", XenbusStateInitialising));
if (nic->script)
flexarray_append_pair(back, "script",
libxl__abs_path(gc, nic->script,
libxl__xen_script_dir_path()));
if (nic->ifname) {
flexarray_append(back, "vifname");
flexarray_append(back, nic->ifname);
}
if (nic->coloft_forwarddev) {
flexarray_append(back, "forwarddev");
flexarray_append(back, nic->coloft_forwarddev);
}
flexarray_append(back, "mac");
flexarray_append(back,GCSPRINTF(LIBXL_MAC_FMT, LIBXL_MAC_BYTES(nic->mac)));
if (nic->ip) {
flexarray_append(back, "ip");
flexarray_append(back, libxl__strdup(gc, nic->ip));
}
if (nic->gatewaydev) {
flexarray_append(back, "gatewaydev");
flexarray_append(back, libxl__strdup(gc, nic->gatewaydev));
}
if (nic->rate_interval_usecs > 0) {
flexarray_append(back, "rate");
flexarray_append(back, GCSPRINTF("%"PRIu64",%"PRIu32"",
nic->rate_bytes_per_interval,
nic->rate_interval_usecs));
}
flexarray_append(back, "bridge");
flexarray_append(back, libxl__strdup(gc, nic->bridge));
flexarray_append(back, "handle");
flexarray_append(back, GCSPRINTF("%d", nic->devid));
flexarray_append(back, "type");
flexarray_append(back, libxl__strdup(gc,
libxl_nic_type_to_string(nic->nictype)));
flexarray_append(front, "backend-id");
flexarray_append(front, GCSPRINTF("%d", nic->backend_domid));
flexarray_append(front, "state");
flexarray_append(front, GCSPRINTF("%d", XenbusStateInitialising));
flexarray_append(front, "handle");
flexarray_append(front, GCSPRINTF("%d", nic->devid));
flexarray_append(front, "mac");
flexarray_append(front, GCSPRINTF(
LIBXL_MAC_FMT, LIBXL_MAC_BYTES(nic->mac)));
if (aodev->update_json) {
lock = libxl__lock_domain_userdata(gc, domid);
if (!lock) {
rc = ERROR_LOCK_FAIL;
goto out;
}
rc = libxl__get_domain_configuration(gc, domid, &d_config);
if (rc) goto out;
DEVICE_ADD(nic, nics, domid, &nic_saved, COMPARE_DEVID, &d_config);
rc = libxl__dm_check_start(gc, &d_config, domid);
if (rc) goto out;
}
for (;;) {
rc = libxl__xs_transaction_start(gc, &t);
if (rc) goto out;
rc = libxl__device_exists(gc, t, device);
if (rc < 0) goto out;
if (rc == 1) { /* already exists in xenstore */
LOG(ERROR, "device already exists in xenstore");
aodev->action = LIBXL__DEVICE_ACTION_ADD; /* for error message */
rc = ERROR_DEVICE_EXISTS;
goto out;
}
if (aodev->update_json) {
rc = libxl__set_domain_configuration(gc, domid, &d_config);
if (rc) goto out;
}
libxl__device_generic_add(gc, t, device,
libxl__xs_kvs_of_flexarray(gc, back,
back->count),
libxl__xs_kvs_of_flexarray(gc, front,
front->count),
NULL);
rc = libxl__xs_transaction_commit(gc, &t);
if (!rc) break;
if (rc < 0) goto out;
}
aodev->dev = device;
aodev->action = LIBXL__DEVICE_ACTION_ADD;
libxl__wait_device_connection(egc, aodev);
rc = 0;
out:
libxl__xs_transaction_abort(gc, &t);
if (lock) libxl__unlock_domain_userdata(lock);
libxl_device_nic_dispose(&nic_saved);
libxl_domain_config_dispose(&d_config);
aodev->rc = rc;
if (rc) aodev->callback(egc, aodev);
return;
}
