void libxl__xc_domain_save(libxl__egc *egc, libxl__domain_suspend_state *dss,
unsigned long vm_generationid_addr)
{
STATE_AO_GC(dss->ao);
int r, rc, toolstack_data_fd = -1;
uint32_t toolstack_data_len = 0;
/* Resources we need to free */
uint8_t *toolstack_data_buf = 0;
unsigned cbflags = libxl__srm_callout_enumcallbacks_save
(&dss->shs.callbacks.save.a);
if (dss->shs.callbacks.save.toolstack_save) {
r = dss->shs.callbacks.save.toolstack_save
(dss->domid, &toolstack_data_buf, &toolstack_data_len, dss);
if (r) { rc = ERROR_FAIL; goto out; }
dss->shs.toolstack_data_file = tmpfile();
if (!dss->shs.toolstack_data_file) {
LOGE(ERROR, "cannot create toolstack data tmpfile");
rc = ERROR_FAIL;
goto out;
}
toolstack_data_fd = fileno(dss->shs.toolstack_data_file);
r = libxl_write_exactly(CTX, toolstack_data_fd,
toolstack_data_buf, toolstack_data_len,
"toolstack data tmpfile", 0);
if (r) { rc = ERROR_FAIL; goto out; }
}
const unsigned long argnums[] = {
dss->domid, 0, 0, dss->xcflags, dss->hvm, vm_generationid_addr,
toolstack_data_fd, toolstack_data_len,
cbflags,
};
dss->shs.ao = ao;
dss->shs.domid = dss->domid;
dss->shs.recv_callback = libxl__srm_callout_received_save;
dss->shs.completion_callback = libxl__xc_domain_save_done;
dss->shs.caller_state = dss;
dss->shs.need_results = 0;
free(toolstack_data_buf);
run_helper(egc, &dss->shs, "--save-domain", dss->fd,
&toolstack_data_fd, 1,
argnums, ARRAY_SIZE(argnums));
return;
out:
free(toolstack_data_buf);
if (dss->shs.toolstack_data_file) fclose(dss->shs.toolstack_data_file);
libxl__xc_domain_save_done(egc, dss, rc, 0, 0);
}
void log_callback(
void *userdata, int loglevel, const char *file,
int line, const char *func, char *s)
{
char str[1024];
snprintf(str, sizeof(str), "[%d] %s:%d:%s: %s\n",
loglevel, file, line, func, s);
libxl_write_exactly(NULL, logfile, str, strlen(str), NULL, NULL);
}
void libxl__srm_callout_sendreply(int r, void *user)
{
libxl__save_helper_state *shs = user;
libxl__egc *egc = shs->egc;
STATE_AO_GC(shs->ao);
int errnoval;
errnoval = libxl_write_exactly(CTX, libxl__carefd_fd(shs->pipes[0]),
&r, sizeof(r), shs->stdin_what,
"callback return value");
if (errnoval)
helper_failed(egc, shs, ERROR_FAIL);
}
