static char *dm_spice_options(libxl__gc *gc,
const libxl_spice_info *spice)
{
char *opt;
if (!spice->port && !spice->tls_port) {
LIBXL__LOG(CTX, LIBXL__LOG_ERROR,
"at least one of the spiceport or tls_port must be provided");
return NULL;
}
if (!libxl_defbool_val(spice->disable_ticketing)) {
if (!spice->passwd) {
LIBXL__LOG(CTX, LIBXL__LOG_ERROR,
"spice ticketing is enabled but missing password");
return NULL;
}
else if (!spice->passwd[0]) {
LIBXL__LOG(CTX, LIBXL__LOG_ERROR,
"spice password can't be empty");
return NULL;
}
}
opt = libxl__sprintf(gc, "port=%d,tls-port=%d",
spice->port, spice->tls_port);
if (spice->host)
opt = libxl__sprintf(gc, "%s,addr=%s", opt, spice->host);
if (libxl_defbool_val(spice->disable_ticketing))
opt = libxl__sprintf(gc, "%s,disable-ticketing", opt);
else
opt = libxl__sprintf(gc, "%s,password=%s", opt, spice->passwd);
opt = libxl__sprintf(gc, "%s,agent-mouse=%s", opt,
libxl_defbool_val(spice->agent_mouse) ? "on" : "off");
return opt;
}
static int libxl__write_stub_dmargs(libxl__gc *gc,
int dm_domid, int guest_domid,
char **args)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
int i;
char *vm_path;
char *dmargs, *path;
int dmargs_size;
struct xs_permissions roperm[2];
xs_transaction_t t;
roperm[0].id = 0;
roperm[0].perms = XS_PERM_NONE;
roperm[1].id = dm_domid;
roperm[1].perms = XS_PERM_READ;
vm_path = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "/local/domain/%d/vm", guest_domid));
i = 0;
dmargs_size = 0;
while (args[i] != NULL) {
dmargs_size = dmargs_size + strlen(args[i]) + 1;
i++;
}
dmargs_size++;
dmargs = (char *) malloc(dmargs_size);
i = 1;
dmargs[0] = '\0';
while (args[i] != NULL) {
if (strcmp(args[i], "-sdl") && strcmp(args[i], "-M") && strcmp(args[i], "xenfv")) {
strcat(dmargs, " ");
strcat(dmargs, args[i]);
}
i++;
}
path = libxl__sprintf(gc, "%s/image/dmargs", vm_path);
retry_transaction:
t = xs_transaction_start(ctx->xsh);
xs_write(ctx->xsh, t, path, dmargs, strlen(dmargs));
xs_set_permissions(ctx->xsh, t, path, roperm, ARRAY_SIZE(roperm));
xs_set_permissions(ctx->xsh, t, libxl__sprintf(gc, "%s/rtc/timeoffset", vm_path), roperm, ARRAY_SIZE(roperm));
if (!xs_transaction_end(ctx->xsh, t, 0))
if (errno == EAGAIN)
goto retry_transaction;
free(dmargs);
return 0;
}
int libxl__destroy_device_model(libxl__gc *gc, uint32_t domid)
{
char *pid;
int ret;
pid = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "/local/domain/%d/image/device-model-pid", domid));
if (!pid || !atoi(pid)) {
LOG(ERROR, "could not find device-model's pid for dom %u", domid);
ret = ERROR_FAIL;
goto out;
}
ret = kill(atoi(pid), SIGHUP);
if (ret < 0 && errno == ESRCH) {
LOG(ERROR, "Device Model already exited");
ret = 0;
} else if (ret == 0) {
LOG(DEBUG, "Device Model signaled");
ret = 0;
} else {
LOGE(ERROR, "failed to kill Device Model [%d]", atoi(pid));
ret = ERROR_FAIL;
goto out;
}
out:
return ret;
}
static const char *libxl_tapif_script(libxl__gc *gc)
{
#ifdef __linux__
return libxl__strdup(gc, "no");
#else
return libxl__sprintf(gc, "%s/qemu-ifup", libxl__xen_script_dir_path());
#endif
}
static int store_libxl_entry(libxl__gc *gc, uint32_t domid,
libxl_domain_build_info *b_info)
{
char *path = NULL;
path = libxl__xs_libxl_path(gc, domid);
path = libxl__sprintf(gc, "%s/dm-version", path);
return libxl__xs_write(gc, XBT_NULL, path, "%s",
libxl_device_model_version_to_string(b_info->device_model_version));
}
int libxl__destroy_device_model(libxl_ctx *ctx, uint32_t domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *pid;
int ret;
pid = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "/local/domain/%d/image/device-model-pid", domid));
if (!pid) {
int stubdomid = libxl_get_stubdom_id(ctx, domid);
if (!stubdomid) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "Couldn't find device model's pid");
ret = ERROR_INVAL;
goto out;
}
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Device model is a stubdom, domid=%d\n", stubdomid);
ret = libxl_domain_destroy(ctx, stubdomid, 0);
if (ret)
goto out;
} else {
ret = kill(atoi(pid), SIGHUP);
if (ret < 0 && errno == ESRCH) {
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Device Model already exited");
ret = 0;
} else if (ret == 0) {
LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Device Model signaled");
ret = 0;
} else {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "failed to kill Device Model [%d]",
atoi(pid));
ret = ERROR_FAIL;
goto out;
}
}
xs_rm(ctx->xsh, XBT_NULL, libxl__sprintf(&gc, "/local/domain/0/device-model/%d", domid));
out:
libxl__free_all(&gc);
return ret;
}
static void make_bootloader_args(libxl__gc *gc, libxl__bootloader_state *bl,
const char *bootloader_path)
{
const libxl_domain_build_info *info = bl->info;
bl->argsspace = 7 + libxl_string_list_length(&info->u.pv.bootloader_args);
GCNEW_ARRAY(bl->args, bl->argsspace);
#define ARG(arg) bootloader_arg(bl, (arg))
ARG(bootloader_path);
if (info->u.pv.kernel)
ARG(libxl__sprintf(gc, "--kernel=%s", info->u.pv.kernel));
if (info->u.pv.ramdisk)
ARG(libxl__sprintf(gc, "--ramdisk=%s", info->u.pv.ramdisk));
if (info->u.pv.cmdline && *info->u.pv.cmdline != '\0')
ARG(libxl__sprintf(gc, "--args=%s", info->u.pv.cmdline));
ARG(libxl__sprintf(gc, "--output=%s", bl->outputpath));
ARG("--output-format=simple0");
ARG(libxl__sprintf(gc, "--output-directory=%s", bl->outputdir));
if (info->u.pv.bootloader_args) {
char **p = info->u.pv.bootloader_args;
while (*p) {
ARG(*p);
p++;
}
}
ARG(bl->dls.diskpath);
/* Sentinel for execv */
ARG(NULL);
#undef ARG
}
int libxl_get_stubdom_id(libxl_ctx *ctx, int guest_domid)
{
GC_INIT(ctx);
char * stubdom_id_s;
int ret;
stubdom_id_s = libxl__xs_read(gc, XBT_NULL,
libxl__sprintf(gc, "%s/image/device-model-domid",
libxl__xs_get_dompath(gc, guest_domid)));
if (stubdom_id_s)
ret = atoi(stubdom_id_s);
else
ret = 0;
GC_FREE;
return ret;
}
int libxl_get_stubdom_id(libxl_ctx *ctx, int guest_domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char * stubdom_id_s;
int ret;
stubdom_id_s = libxl__xs_read(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/image/device-model-domid",
libxl__xs_get_dompath(&gc, guest_domid)));
if (stubdom_id_s)
ret = atoi(stubdom_id_s);
else
ret = 0;
libxl__free_all(&gc);
return ret;
}
int libxl__device_model_version_running(libxl__gc *gc, uint32_t domid)
{
char *path = NULL;
char *dm_version = NULL;
libxl_device_model_version value;
path = libxl__xs_libxl_path(gc, domid);
path = libxl__sprintf(gc, "%s/dm-version", path);
dm_version = libxl__xs_read(gc, XBT_NULL, path);
if (!dm_version) {
return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL;
}
if (libxl_device_model_version_from_string(dm_version, &value) < 0) {
LOG(ERROR, "fatal: %s contain a wrong value (%s)", path, dm_version);
return -1;
}
return value;
}
int libxl_is_stubdom(libxl_ctx *ctx, uint32_t domid, uint32_t *target_domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *target, *endptr;
uint32_t value;
int ret = 0;
target = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/target", libxl__xs_get_dompath(&gc, domid)));
if (!target)
goto out;
value = strtol(target, &endptr, 10);
if (*endptr != '\0')
goto out;
if (target_domid)
*target_domid = value;
ret = 1;
out:
libxl__free_all(&gc);
return ret;
}
int libxl_is_stubdom(libxl_ctx *ctx, uint32_t domid, uint32_t *target_domid)
{
GC_INIT(ctx);
char *target, *endptr;
uint32_t value;
int ret = 0;
target = libxl__xs_read(gc, XBT_NULL, libxl__sprintf(gc, "%s/target", libxl__xs_get_dompath(gc, domid)));
if (!target)
goto out;
value = strtol(target, &endptr, 10);
if (*endptr != '\0')
goto out;
if (target_domid)
*target_domid = value;
ret = 1;
out:
GC_FREE;
return ret;
}
void libxl__spawn_local_dm(libxl__egc *egc, libxl__dm_spawn_state *dmss)
{
/* convenience aliases */
const int domid = dmss->guest_domid;
libxl__domain_build_state *const state = dmss->build_state;
libxl__spawn_state *const spawn = &dmss->spawn;
STATE_AO_GC(dmss->spawn.ao);
libxl_ctx *ctx = CTX;
libxl_domain_config *guest_config = dmss->guest_config;
const libxl_domain_create_info *c_info = &guest_config->c_info;
const libxl_domain_build_info *b_info = &guest_config->b_info;
const libxl_vnc_info *vnc = libxl__dm_vnc(guest_config);
char *path, *logfile;
int logfile_w, null;
int rc;
char **args, **arg;
xs_transaction_t t;
char *vm_path;
char **pass_stuff;
const char *dm;
if (libxl_defbool_val(b_info->device_model_stubdomain)) {
abort();
}
dm = libxl__domain_device_model(gc, b_info);
if (!dm) {
rc = ERROR_FAIL;
goto out;
}
if (access(dm, X_OK) < 0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
"device model %s is not executable", dm);
rc = ERROR_FAIL;
goto out;
}
args = libxl__build_device_model_args(gc, dm, domid, guest_config, state);
if (!args) {
rc = ERROR_FAIL;
goto out;
}
if (b_info->type == LIBXL_DOMAIN_TYPE_HVM) {
path = xs_get_domain_path(ctx->xsh, domid);
libxl__xs_write(gc, XBT_NULL,
libxl__sprintf(gc, "%s/hvmloader/bios", path),
"%s", libxl_bios_type_to_string(b_info->u.hvm.bios));
/* Disable relocating memory to make the MMIO hole larger
* unless we're running qemu-traditional */
libxl__xs_write(gc, XBT_NULL,
libxl__sprintf(gc,
"%s/hvmloader/allow-memory-relocate",
path),
"%d",
b_info->device_model_version==LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL);
free(path);
}
path = libxl__sprintf(gc, "/local/domain/0/device-model/%d", domid);
xs_mkdir(ctx->xsh, XBT_NULL, path);
if (b_info->type == LIBXL_DOMAIN_TYPE_HVM &&
b_info->device_model_version
== LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL)
libxl__xs_write(gc, XBT_NULL, libxl__sprintf(gc, "%s/disable_pf", path),
"%d", !libxl_defbool_val(b_info->u.hvm.xen_platform_pci));
libxl_create_logfile(ctx,
libxl__sprintf(gc, "qemu-dm-%s", c_info->name),
&logfile);
logfile_w = open(logfile, O_WRONLY|O_CREAT|O_APPEND, 0644);
free(logfile);
null = open("/dev/null", O_RDONLY);
const char *dom_path = libxl__xs_get_dompath(gc, domid);
spawn->pidpath = GCSPRINTF("%s/%s", dom_path, "image/device-model-pid");
if (vnc && vnc->passwd) {
/* This xenstore key will only be used by qemu-xen-traditionnal.
* The code to supply vncpasswd to qemu-xen is later. */
retry_transaction:
/* Find uuid and the write the vnc password to xenstore for qemu. */
t = xs_transaction_start(ctx->xsh);
vm_path = libxl__xs_read(gc,t,libxl__sprintf(gc, "%s/vm", dom_path));
if (vm_path) {
/* Now write the vncpassword into it. */
pass_stuff = libxl__calloc(gc, 3, sizeof(char *));
pass_stuff[0] = "vncpasswd";
pass_stuff[1] = vnc->passwd;
libxl__xs_writev(gc,t,vm_path,pass_stuff);
if (!xs_transaction_end(ctx->xsh, t, 0))
if (errno == EAGAIN)
goto retry_transaction;
}
}
LIBXL__LOG(CTX, XTL_DEBUG, "Spawning device-model %s with arguments:", dm);
for (arg = args; *arg; arg++)
LIBXL__LOG(CTX, XTL_DEBUG, " %s", *arg);
spawn->what = GCSPRINTF("domain %d device model", domid);
spawn->xspath = GCSPRINTF("/local/domain/0/device-model/%d/state", domid);
spawn->timeout_ms = LIBXL_DEVICE_MODEL_START_TIMEOUT * 1000;
spawn->pidpath = GCSPRINTF("%s/image/device-model-pid", dom_path);
spawn->midproc_cb = libxl__spawn_record_pid;
spawn->confirm_cb = device_model_confirm;
spawn->failure_cb = device_model_startup_failed;
spawn->detached_cb = device_model_detached;
rc = libxl__spawn_spawn(egc, spawn);
if (rc < 0)
goto out_close;
if (!rc) { /* inner child */
setsid();
libxl__exec(gc, null, logfile_w, logfile_w, dm, args, NULL);
}
rc = 0;
out_close:
close(null);
close(logfile_w);
out:
if (rc)
device_model_spawn_outcome(egc, dmss, rc);
}
char *libxl__abs_path(libxl__gc *gc, const char *s, const char *path)
{
if (!s || s[0] == '/')
return libxl__strdup(gc, s);
return libxl__sprintf(gc, "%s/%s", path, s);
}
static void spawn_stub_launch_dm(libxl__egc *egc,
libxl__multidev *multidev, int ret)
{
libxl__stub_dm_spawn_state *sdss = CONTAINER_OF(multidev, *sdss, multidev);
STATE_AO_GC(sdss->dm.spawn.ao);
libxl_ctx *ctx = libxl__gc_owner(gc);
int i, num_console = STUBDOM_SPECIAL_CONSOLES;
libxl__device_console *console;
/* 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;
uint32_t dm_domid = sdss->pvqemu.guest_domid;
if (ret) {
LOG(ERROR, "error connecting disk devices");
goto out;
}
for (i = 0; i < dm_config->num_nics; i++) {
/* We have to init the nic here, because we still haven't
* called libxl_device_nic_add at this point, but qemu needs
* the nic information to be complete.
*/
ret = libxl__device_nic_setdefault(gc, &dm_config->nics[i], dm_domid);
if (ret)
goto out;
}
ret = libxl__device_vfb_add(gc, dm_domid, &dm_config->vfbs[0]);
if (ret)
goto out;
ret = libxl__device_vkb_add(gc, dm_domid, &dm_config->vkbs[0]);
if (ret)
goto out;
if (guest_config->b_info.u.hvm.serial)
num_console++;
console = libxl__calloc(gc, num_console, sizeof(libxl__device_console));
if (!console) {
ret = ERROR_NOMEM;
goto out;
}
for (i = 0; i < num_console; i++) {
console[i].devid = i;
console[i].consback = LIBXL__CONSOLE_BACKEND_IOEMU;
/* STUBDOM_CONSOLE_LOGGING (console 0) is for minios logging
* STUBDOM_CONSOLE_SAVE (console 1) is for writing the save file
* STUBDOM_CONSOLE_RESTORE (console 2) is for reading the save file
*/
switch (i) {
char *filename;
char *name;
case STUBDOM_CONSOLE_LOGGING:
name = libxl__sprintf(gc, "qemu-dm-%s",
libxl_domid_to_name(ctx, guest_domid));
libxl_create_logfile(ctx, name, &filename);
console[i].output = libxl__sprintf(gc, "file:%s", filename);
free(filename);
break;
case STUBDOM_CONSOLE_SAVE:
console[i].output = libxl__sprintf(gc, "file:%s",
libxl__device_model_savefile(gc, guest_domid));
break;
case STUBDOM_CONSOLE_RESTORE:
if (d_state->saved_state)
console[i].output =
libxl__sprintf(gc, "pipe:%s", d_state->saved_state);
break;
default:
console[i].output = "pty";
break;
}
ret = libxl__device_console_add(gc, dm_domid, &console[i],
i == STUBDOM_CONSOLE_LOGGING ? stubdom_state : NULL);
if (ret)
goto out;
}
sdss->pvqemu.spawn.ao = ao;
sdss->pvqemu.guest_domid = dm_domid;
sdss->pvqemu.guest_config = &sdss->dm_config;
sdss->pvqemu.build_state = &sdss->dm_state;
sdss->pvqemu.callback = spawn_stubdom_pvqemu_cb;
libxl__spawn_local_dm(egc, &sdss->pvqemu);
return;
out:
assert(ret);
spawn_stubdom_pvqemu_cb(egc, &sdss->pvqemu, ret);
}
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);
}
char *libxl__stub_dm_name(libxl__gc *gc, const char *guest_name)
{
return libxl__sprintf(gc, "%s-dm", guest_name);
}
static int libxl_create_stubdom(libxl_ctx *ctx,
libxl_device_model_info *info,
libxl_device_disk *disks, int num_disks,
libxl_device_nic *vifs, int num_vifs,
libxl_device_vfb *vfb,
libxl_device_vkb *vkb,
libxl__device_model_starting **starting_r)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int i, num_console = STUBDOM_SPECIAL_CONSOLES, ret;
libxl_device_console *console;
libxl_domain_create_info c_info;
libxl_domain_build_info b_info;
libxl_domain_build_state state;
uint32_t domid;
char **args;
struct xs_permissions perm[2];
xs_transaction_t t;
libxl__device_model_starting *dm_starting = 0;
args = libxl_build_device_model_args(&gc, info, vifs, num_vifs);
if (!args) {
ret = ERROR_FAIL;
goto out;
}
memset(&c_info, 0x00, sizeof(libxl_domain_create_info));
c_info.hvm = 0;
c_info.name = libxl__sprintf(&gc, "%s-dm", libxl__domid_to_name(&gc, info->domid));
libxl_uuid_copy(&c_info.uuid, &info->uuid);
memset(&b_info, 0x00, sizeof(libxl_domain_build_info));
b_info.max_vcpus = 1;
b_info.max_memkb = 32 * 1024;
b_info.target_memkb = b_info.max_memkb;
b_info.kernel.path = libxl__abs_path(&gc, "ioemu-stubdom.gz", libxl_xenfirmwaredir_path());
b_info.u.pv.cmdline = libxl__sprintf(&gc, " -d %d", info->domid);
b_info.u.pv.ramdisk.path = "";
b_info.u.pv.features = "";
b_info.hvm = 0;
/* fixme: this function can leak the stubdom if it fails */
ret = libxl__domain_make(ctx, &c_info, &domid);
if (ret)
goto out_free;
ret = libxl__domain_build(ctx, &b_info, domid, &state);
if (ret)
goto out_free;
libxl_write_dmargs(ctx, domid, info->domid, args);
libxl__xs_write(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/image/device-model-domid", libxl__xs_get_dompath(&gc, info->domid)),
"%d", domid);
libxl__xs_write(&gc, XBT_NULL,
libxl__sprintf(&gc, "%s/target", libxl__xs_get_dompath(&gc, domid)),
"%d", info->domid);
ret = xc_domain_set_target(ctx->xch, domid, info->domid);
if (ret<0) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "setting target domain %d -> %d", domid, info->domid);
ret = ERROR_FAIL;
goto out_free;
}
xs_set_target(ctx->xsh, domid, info->domid);
perm[0].id = domid;
perm[0].perms = XS_PERM_NONE;
perm[1].id = info->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", info->domid));
xs_set_permissions(ctx->xsh, t, libxl__sprintf(&gc, "/local/domain/0/device-model/%d", info->domid), perm, ARRAY_SIZE(perm));
xs_mkdir(ctx->xsh, t, libxl__sprintf(&gc, "/local/domain/%d/device/vfs", domid));
xs_set_permissions(ctx->xsh, t, libxl__sprintf(&gc, "/local/domain/%d/device/vfs",domid), perm, ARRAY_SIZE(perm));
if (!xs_transaction_end(ctx->xsh, t, 0))
if (errno == EAGAIN)
goto retry_transaction;
for (i = 0; i < num_disks; i++) {
disks[i].domid = domid;
ret = libxl_device_disk_add(ctx, domid, &disks[i]);
if (ret)
goto out_free;
}
for (i = 0; i < num_vifs; i++) {
vifs[i].domid = domid;
ret = libxl_device_nic_add(ctx, domid, &vifs[i]);
if (ret)
goto out_free;
}
vfb->domid = domid;
ret = libxl_device_vfb_add(ctx, domid, vfb);
if (ret)
goto out_free;
vkb->domid = domid;
ret = libxl_device_vkb_add(ctx, domid, vkb);
if (ret)
goto out_free;
if (info->serial)
num_console++;
console = libxl__calloc(&gc, num_console, sizeof(libxl_device_console));
if (!console) {
ret = ERROR_NOMEM;
goto out_free;
}
for (i = 0; i < num_console; i++) {
console[i].devid = i;
console[i].consback = LIBXL_CONSBACK_IOEMU;
console[i].domid = domid;
/* STUBDOM_CONSOLE_LOGGING (console 0) is for minios logging
* STUBDOM_CONSOLE_SAVE (console 1) is for writing the save file
* STUBDOM_CONSOLE_RESTORE (console 2) is for reading the save file
*/
switch (i) {
char *filename;
char *name;
case STUBDOM_CONSOLE_LOGGING:
name = libxl__sprintf(&gc, "qemu-dm-%s", libxl_domid_to_name(ctx, info->domid));
libxl_create_logfile(ctx, name, &filename);
console[i].output = libxl__sprintf(&gc, "file:%s", filename);
console[i].build_state = &state;
free(filename);
break;
case STUBDOM_CONSOLE_SAVE:
console[i].output = libxl__sprintf(&gc, "file:"SAVEFILE".%d", info->domid);
break;
case STUBDOM_CONSOLE_RESTORE:
if (info->saved_state)
console[i].output = libxl__sprintf(&gc, "pipe:%s", info->saved_state);
break;
default:
console[i].output = "pty";
break;
}
ret = libxl_device_console_add(ctx, domid, &console[i]);
if (ret)
goto out_free;
}
if (libxl__create_xenpv_qemu(ctx, domid, vfb, &dm_starting) < 0) {
ret = ERROR_FAIL;
goto out_free;
}
if (libxl__confirm_device_model_startup(ctx, dm_starting) < 0) {
ret = ERROR_FAIL;
goto out_free;
}
libxl_domain_unpause(ctx, domid);
if (starting_r) {
*starting_r = calloc(sizeof(libxl__device_model_starting), 1);
(*starting_r)->domid = info->domid;
(*starting_r)->dom_path = libxl__xs_get_dompath(&gc, info->domid);
(*starting_r)->for_spawn = NULL;
}
ret = 0;
out_free:
free(args);
out:
libxl__free_all(&gc);
return ret;
}
const char *libxl__device_model_savefile(libxl__gc *gc, uint32_t domid)
{
return libxl__sprintf(gc, "/var/lib/xen/qemu-save.%d", domid);
}
int libxl__create_device_model(libxl_ctx *ctx,
libxl_device_model_info *info,
libxl_device_disk *disks, int num_disks,
libxl_device_nic *vifs, int num_vifs,
libxl__device_model_starting **starting_r)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
char *path, *logfile;
int logfile_w, null;
int rc;
char **args;
libxl__device_model_starting buf_starting, *p;
xs_transaction_t t;
char *vm_path;
char **pass_stuff;
if (strstr(info->device_model, "stubdom-dm")) {
libxl_device_vfb vfb;
libxl_device_vkb vkb;
libxl_vfb_and_vkb_from_device_model_info(ctx, info, &vfb, &vkb);
rc = libxl_create_stubdom(ctx, info, disks, num_disks, vifs, num_vifs, &vfb, &vkb, starting_r);
goto out;
}
args = libxl_build_device_model_args(&gc, info, vifs, num_vifs);
if (!args) {
rc = ERROR_FAIL;
goto out;
}
path = libxl__sprintf(&gc, "/local/domain/0/device-model/%d", info->domid);
xs_mkdir(ctx->xsh, XBT_NULL, path);
libxl__xs_write(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/disable_pf", path), "%d", !info->xen_platform_pci);
libxl_create_logfile(ctx, libxl__sprintf(&gc, "qemu-dm-%s", info->dom_name), &logfile);
logfile_w = open(logfile, O_WRONLY|O_CREAT, 0644);
free(logfile);
null = open("/dev/null", O_RDONLY);
if (starting_r) {
rc = ERROR_NOMEM;
*starting_r = calloc(sizeof(libxl__device_model_starting), 1);
if (!*starting_r)
goto out_close;
p = *starting_r;
p->for_spawn = calloc(sizeof(libxl__spawn_starting), 1);
} else {
p = &buf_starting;
p->for_spawn = NULL;
}
p->domid = info->domid;
p->dom_path = libxl__xs_get_dompath(&gc, info->domid);
if (!p->dom_path) {
rc = ERROR_FAIL;
goto out_close;
}
if (info->vncpasswd) {
retry_transaction:
/* Find uuid and the write the vnc password to xenstore for qemu. */
t = xs_transaction_start(ctx->xsh);
vm_path = libxl__xs_read(&gc,t,libxl__sprintf(&gc, "%s/vm", p->dom_path));
if (vm_path) {
/* Now write the vncpassword into it. */
pass_stuff = libxl__calloc(&gc, 3, sizeof(char *));
pass_stuff[0] = "vncpasswd";
pass_stuff[1] = info->vncpasswd;
libxl__xs_writev(&gc,t,vm_path,pass_stuff);
if (!xs_transaction_end(ctx->xsh, t, 0))
if (errno == EAGAIN)
goto retry_transaction;
}
}
rc = libxl__spawn_spawn(ctx, p, "device model", dm_xenstore_record_pid);
if (rc < 0)
goto out_close;
if (!rc) { /* inner child */
setsid();
libxl__exec(null, logfile_w, logfile_w,
libxl__abs_path(&gc, info->device_model, libxl_libexec_path()),
args);
}
rc = 0;
out_close:
close(null);
close(logfile_w);
free(args);
out:
libxl__free_all(&gc);
return rc;
}
int libxl__domain_build(libxl__gc *gc,
libxl_domain_build_info *info,
uint32_t domid,
libxl__domain_build_state *state)
{
char **vments = NULL, **localents = NULL;
struct timeval start_time;
int i, ret;
ret = libxl__build_pre(gc, domid, info, state);
if (ret)
goto out;
gettimeofday(&start_time, NULL);
switch (info->type) {
case LIBXL_DOMAIN_TYPE_HVM:
ret = libxl__build_hvm(gc, domid, info, state);
if (ret)
goto out;
vments = libxl__calloc(gc, 7, sizeof(char *));
vments[0] = "rtc/timeoffset";
vments[1] = (info->u.hvm.timeoffset) ? info->u.hvm.timeoffset : "";
vments[2] = "image/ostype";
vments[3] = "hvm";
vments[4] = "start_time";
vments[5] = libxl__sprintf(gc, "%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
localents = libxl__calloc(gc, 7, sizeof(char *));
localents[0] = "platform/acpi";
localents[1] = libxl_defbool_val(info->u.hvm.acpi) ? "1" : "0";
localents[2] = "platform/acpi_s3";
localents[3] = libxl_defbool_val(info->u.hvm.acpi_s3) ? "1" : "0";
localents[4] = "platform/acpi_s4";
localents[5] = libxl_defbool_val(info->u.hvm.acpi_s4) ? "1" : "0";
break;
case LIBXL_DOMAIN_TYPE_PV:
ret = libxl__build_pv(gc, domid, info, state);
if (ret)
goto out;
vments = libxl__calloc(gc, 11, sizeof(char *));
i = 0;
vments[i++] = "image/ostype";
vments[i++] = "linux";
vments[i++] = "image/kernel";
vments[i++] = (char *) state->pv_kernel.path;
vments[i++] = "start_time";
vments[i++] = libxl__sprintf(gc, "%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
if (state->pv_ramdisk.path) {
vments[i++] = "image/ramdisk";
vments[i++] = (char *) state->pv_ramdisk.path;
}
if (state->pv_cmdline) {
vments[i++] = "image/cmdline";
vments[i++] = (char *) state->pv_cmdline;
}
break;
default:
ret = ERROR_INVAL;
goto out;
}
ret = libxl__build_post(gc, domid, info, state, vments, localents);
out:
return ret;
}
int libxl__domain_make(libxl__gc *gc, libxl_domain_create_info *info,
uint32_t *domid)
{
libxl_ctx *ctx = libxl__gc_owner(gc);
int flags, ret, rc, nb_vm;
char *uuid_string;
char *dom_path, *vm_path, *libxl_path;
struct xs_permissions roperm[2];
struct xs_permissions rwperm[1];
struct xs_permissions noperm[1];
xs_transaction_t t = 0;
xen_domain_handle_t handle;
libxl_vminfo *vm_list;
assert(!libxl_domid_valid_guest(*domid));
uuid_string = libxl__uuid2string(gc, info->uuid);
if (!uuid_string) {
rc = ERROR_NOMEM;
goto out;
}
flags = 0;
if (info->type == LIBXL_DOMAIN_TYPE_HVM) {
flags |= XEN_DOMCTL_CDF_hvm_guest;
flags |= libxl_defbool_val(info->hap) ? XEN_DOMCTL_CDF_hap : 0;
flags |= libxl_defbool_val(info->oos) ? 0 : XEN_DOMCTL_CDF_oos_off;
}
*domid = -1;
/* Ultimately, handle is an array of 16 uint8_t, same as uuid */
libxl_uuid_copy((libxl_uuid *)handle, &info->uuid);
ret = xc_domain_create(ctx->xch, info->ssidref, handle, flags, domid);
if (ret < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, ret, "domain creation fail");
rc = ERROR_FAIL;
goto out;
}
ret = xc_cpupool_movedomain(ctx->xch, info->poolid, *domid);
if (ret < 0) {
LIBXL__LOG_ERRNOVAL(ctx, LIBXL__LOG_ERROR, ret, "domain move fail");
rc = ERROR_FAIL;
goto out;
}
dom_path = libxl__xs_get_dompath(gc, *domid);
if (!dom_path) {
rc = ERROR_FAIL;
goto out;
}
vm_path = libxl__sprintf(gc, "/vm/%s", uuid_string);
if (!vm_path) {
LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "cannot allocate create paths");
rc = ERROR_FAIL;
goto out;
}
libxl_path = libxl__xs_libxl_path(gc, *domid);
if (!libxl_path) {
rc = ERROR_FAIL;
goto out;
}
noperm[0].id = 0;
noperm[0].perms = XS_PERM_NONE;
roperm[0].id = 0;
roperm[0].perms = XS_PERM_NONE;
roperm[1].id = *domid;
roperm[1].perms = XS_PERM_READ;
rwperm[0].id = *domid;
rwperm[0].perms = XS_PERM_NONE;
retry_transaction:
t = xs_transaction_start(ctx->xsh);
xs_rm(ctx->xsh, t, dom_path);
libxl__xs_mkdir(gc, t, dom_path, roperm, ARRAY_SIZE(roperm));
xs_rm(ctx->xsh, t, vm_path);
libxl__xs_mkdir(gc, t, vm_path, roperm, ARRAY_SIZE(roperm));
xs_rm(ctx->xsh, t, libxl_path);
libxl__xs_mkdir(gc, t, libxl_path, noperm, ARRAY_SIZE(noperm));
xs_write(ctx->xsh, t, libxl__sprintf(gc, "%s/vm", dom_path), vm_path, strlen(vm_path));
rc = libxl__domain_rename(gc, *domid, 0, info->name, t);
if (rc)
goto out;
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/cpu", dom_path),
roperm, ARRAY_SIZE(roperm));
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/memory", dom_path),
roperm, ARRAY_SIZE(roperm));
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/device", dom_path),
roperm, ARRAY_SIZE(roperm));
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/control", dom_path),
roperm, ARRAY_SIZE(roperm));
if (info->type == LIBXL_DOMAIN_TYPE_HVM)
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/hvmloader", dom_path),
roperm, ARRAY_SIZE(roperm));
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/control/shutdown", dom_path),
rwperm, ARRAY_SIZE(rwperm));
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/device/suspend/event-channel", dom_path),
rwperm, ARRAY_SIZE(rwperm));
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/data", dom_path),
rwperm, ARRAY_SIZE(rwperm));
if (info->type == LIBXL_DOMAIN_TYPE_HVM)
libxl__xs_mkdir(gc, t,
libxl__sprintf(gc, "%s/hvmloader/generation-id-address", dom_path),
rwperm, ARRAY_SIZE(rwperm));
vm_list = libxl_list_vm(ctx, &nb_vm);
if (!vm_list) {
LOG(ERROR, "cannot get number of running guests");
rc = ERROR_FAIL;
goto out;
}
libxl_vminfo_list_free(vm_list, nb_vm);
int hotplug_setting = libxl__hotplug_settings(gc, t);
if (hotplug_setting < 0) {
LOG(ERROR, "unable to get current hotplug scripts execution setting");
rc = ERROR_FAIL;
goto out;
}
if (libxl_defbool_val(info->run_hotplug_scripts) != hotplug_setting &&
(nb_vm - 1)) {
LOG(ERROR, "cannot change hotplug execution option once set, "
"please shutdown all guests before changing it");
rc = ERROR_FAIL;
goto out;
}
if (libxl_defbool_val(info->run_hotplug_scripts)) {
rc = libxl__xs_write_checked(gc, t, DISABLE_UDEV_PATH, "1");
if (rc) {
LOGE(ERROR, "unable to write %s = 1", DISABLE_UDEV_PATH);
goto out;
}
} else {
rc = libxl__xs_rm_checked(gc, t, DISABLE_UDEV_PATH);
if (rc) {
LOGE(ERROR, "unable to delete %s", DISABLE_UDEV_PATH);
goto out;
}
}
xs_write(ctx->xsh, t, libxl__sprintf(gc, "%s/uuid", vm_path), uuid_string, strlen(uuid_string));
xs_write(ctx->xsh, t, libxl__sprintf(gc, "%s/name", vm_path), info->name, strlen(info->name));
libxl__xs_writev(gc, t, dom_path, info->xsdata);
libxl__xs_writev(gc, t, libxl__sprintf(gc, "%s/platform", dom_path), info->platformdata);
xs_write(ctx->xsh, t, libxl__sprintf(gc, "%s/control/platform-feature-multiprocessor-suspend", dom_path), "1", 1);
xs_write(ctx->xsh, t, libxl__sprintf(gc, "%s/control/platform-feature-xs_reset_watches", dom_path), "1", 1);
if (!xs_transaction_end(ctx->xsh, t, 0)) {
if (errno == EAGAIN) {
t = 0;
goto retry_transaction;
}
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "domain creation "
"xenstore transaction commit failed");
rc = ERROR_FAIL;
goto out;
}
t = 0;
rc = 0;
out:
if (t) xs_transaction_end(ctx->xsh, t, 1);
return rc;
}
int libxl_run_bootloader(libxl_ctx *ctx,
libxl_domain_build_info *info,
libxl_device_disk *disk,
uint32_t domid)
{
libxl__gc gc = LIBXL_INIT_GC(ctx);
int ret, rc = 0;
char *fifo = NULL;
char *diskpath = NULL;
char **args = NULL;
char tempdir_template[] = "/var/run/libxl/bl.XXXXXX";
char *tempdir;
char *dom_console_xs_path;
char dom_console_slave_tty_path[PATH_MAX];
int xenconsoled_fd = -1, xenconsoled_slave = -1;
int bootloader_fd = -1, fifo_fd = -1;
int blrc;
pid_t pid;
char *blout;
struct stat st_buf;
if (info->hvm || !info->u.pv.bootloader)
goto out;
rc = ERROR_INVAL;
if (!disk)
goto out;
rc = ERROR_FAIL;
ret = mkdir("/var/run/libxl/", S_IRWXU);
if (ret < 0 && errno != EEXIST)
goto out;
ret = stat("/var/run/libxl/", &st_buf);
if (ret < 0)
goto out;
if (!S_ISDIR(st_buf.st_mode))
goto out;
tempdir = mkdtemp(tempdir_template);
if (tempdir == NULL)
goto out;
ret = asprintf(&fifo, "%s/fifo", tempdir);
if (ret < 0) {
fifo = NULL;
goto out_close;
}
ret = mkfifo(fifo, 0600);
if (ret < 0) {
goto out_close;
}
diskpath = libxl_device_disk_local_attach(ctx, disk);
if (!diskpath) {
goto out_close;
}
args = make_bootloader_args(&gc, info, domid, fifo, diskpath);
if (args == NULL) {
rc = ERROR_NOMEM;
goto out_close;
}
/*
* We need to present the bootloader's tty as a pty slave that xenconsole
* can access. Since the bootloader itself needs a pty slave,
* we end up with a connection like this:
*
* xenconsole -- (slave pty1 master) <-> (master pty2 slave) -- bootloader
*
* where we copy characters between the two master fds, as well as
* listening on the bootloader's fifo for the results.
*/
ret = open_xenconsoled_pty(&xenconsoled_fd, &xenconsoled_slave,
&dom_console_slave_tty_path[0],
sizeof(dom_console_slave_tty_path));
if (ret < 0) {
goto out_close;
}
dom_console_xs_path = libxl__sprintf(&gc, "%s/console/tty", libxl__xs_get_dompath(&gc, domid));
libxl__xs_write(&gc, XBT_NULL, dom_console_xs_path, "%s", dom_console_slave_tty_path);
pid = fork_exec_bootloader(&bootloader_fd, info->u.pv.bootloader, args);
if (pid < 0) {
goto out_close;
}
while (1) {
fifo_fd = open(fifo, O_RDONLY);
if (fifo_fd > -1)
break;
if (errno == EINTR)
continue;
goto out_close;
}
fcntl(fifo_fd, F_SETFL, O_NDELAY);
blout = bootloader_interact(&gc, xenconsoled_fd, bootloader_fd, fifo_fd);
if (blout == NULL) {
goto out_close;
}
pid = waitpid(pid, &blrc, 0);
if (pid == -1 || (pid > 0 && WIFEXITED(blrc) && WEXITSTATUS(blrc) != 0)) {
goto out_close;
}
parse_bootloader_result(ctx, info, blout);
rc = 0;
out_close:
if (diskpath) {
libxl_device_disk_local_detach(ctx, disk);
free(diskpath);
}
if (fifo_fd > -1)
close(fifo_fd);
if (bootloader_fd > -1)
close(bootloader_fd);
if (xenconsoled_fd > -1)
close(xenconsoled_fd);
if (xenconsoled_slave > -1)
close(xenconsoled_slave);
if (fifo) {
unlink(fifo);
free(fifo);
}
rmdir(tempdir);
free(args);
out:
libxl__free_all(&gc);
return rc;
}
void libxl__xc_domain_restore_done(libxl__egc *egc, void *dcs_void,
int ret, int retval, int errnoval)
{
libxl__domain_create_state *dcs = dcs_void;
STATE_AO_GC(dcs->ao);
libxl_ctx *ctx = libxl__gc_owner(gc);
char **vments = NULL, **localents = NULL;
struct timeval start_time;
int i, esave, flags;
/* convenience aliases */
const uint32_t domid = dcs->guest_domid;
libxl_domain_config *const d_config = dcs->guest_config;
libxl_domain_build_info *const info = &d_config->b_info;
libxl__domain_build_state *const state = &dcs->build_state;
const int fd = dcs->restore_fd;
if (ret)
goto out;
if (retval) {
LOGEV(ERROR, errnoval, "restoring domain");
ret = ERROR_FAIL;
goto out;
}
gettimeofday(&start_time, NULL);
switch (info->type) {
case LIBXL_DOMAIN_TYPE_HVM:
vments = libxl__calloc(gc, 7, sizeof(char *));
vments[0] = "rtc/timeoffset";
vments[1] = (info->u.hvm.timeoffset) ? info->u.hvm.timeoffset : "";
vments[2] = "image/ostype";
vments[3] = "hvm";
vments[4] = "start_time";
vments[5] = libxl__sprintf(gc, "%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
break;
case LIBXL_DOMAIN_TYPE_PV:
vments = libxl__calloc(gc, 11, sizeof(char *));
i = 0;
vments[i++] = "image/ostype";
vments[i++] = "linux";
vments[i++] = "image/kernel";
vments[i++] = (char *) state->pv_kernel.path;
vments[i++] = "start_time";
vments[i++] = libxl__sprintf(gc, "%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
if (state->pv_ramdisk.path) {
vments[i++] = "image/ramdisk";
vments[i++] = (char *) state->pv_ramdisk.path;
}
if (state->pv_cmdline) {
vments[i++] = "image/cmdline";
vments[i++] = (char *) state->pv_cmdline;
}
break;
default:
ret = ERROR_INVAL;
goto out;
}
ret = libxl__build_post(gc, domid, info, state, vments, localents);
if (ret)
goto out;
if (info->type == LIBXL_DOMAIN_TYPE_HVM) {
state->saved_state = GCSPRINTF(
XC_DEVICE_MODEL_RESTORE_FILE".%d", domid);
}
out:
if (info->type == LIBXL_DOMAIN_TYPE_PV) {
libxl__file_reference_unmap(&state->pv_kernel);
libxl__file_reference_unmap(&state->pv_ramdisk);
}
esave = errno;
flags = fcntl(fd, F_GETFL);
if (flags == -1) {
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "unable to get flags on restore fd");
} else {
flags &= ~O_NONBLOCK;
if (fcntl(fd, F_SETFL, flags) == -1)
LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "unable to put restore fd"
" back to blocking mode");
}
errno = esave;
domcreate_rebuild_done(egc, dcs, ret);
}
