//Creates a xenstore battery dir with the specified index if it doesn't already exist.
static void make_xenstore_battery_dir(unsigned int battery_index) {
char xenstore_path[256];
char ** dir_entries;
unsigned int num_entries, i;
bool flag;
dir_entries = xenstore_ls(&num_entries, "/pm");
if (!dir_entries) {
xcpmd_log(LOG_WARNING,
"Listing directory /pm failed with error `%s'\n", strerror(errno));
return;
}
snprintf(xenstore_path, 255, "%s%i", XS_BATTERY_PATH, battery_index);
flag = false;
for (i = 0; i < num_entries; ++i) {
if (!strcmp(dir_entries[i], xenstore_path)) {
flag = true;
break;
}
}
if (!flag)
xenstore_mkdir(xenstore_path);
//xenstore_ls() calls malloc(), so be sure to free().
free(dir_entries);
}
static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev,
char *fe, char *be, int len)
{
char *dom;
dom = xs_get_domain_path(xenstore, xen_domid);
snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev);
free(dom);
dom = xs_get_domain_path(xenstore, 0);
snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev);
free(dom);
xenstore_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE);
xenstore_mkdir(be, XS_PERM_READ);
return 0;
}
int main(int argc, char *argv[]) {
int ret = 0;
#ifndef RUN_STANDALONE
openlog("xcpmd", 0, LOG_DAEMON);
daemonize();
#endif
xcpmd_log(LOG_INFO, "Starting XenClient power management daemon.\n");
//Initialize libevent library
event_init();
//Initialize xenstore.
if (xenstore_init() == -1) {
xcpmd_log(LOG_ERR, "Unable to init xenstore\n");
return -1;
}
// Allow everyone to read from /pm/ in xenstore
xenstore_rm("/pm");
xenstore_mkdir("/pm");
xenstore_chmod("r0", 1, "/pm");
initialize_platform_info();
xcpmd_log(LOG_INFO, "Starting DBUS server.\n");
if (xcpmd_dbus_initialize() == -1) {
xcpmd_log(LOG_ERR, "Failed to initialize DBUS server\n");
goto xcpmd_err;
}
xcpmd_log(LOG_INFO, "Starting ACPI events monitor.\n");
if (acpi_events_initialize() == -1) {
xcpmd_log(LOG_ERR, "Failed to initialize ACPI events monitor\n");
goto xcpmd_err;
}
// Load modules
xcpmd_log(LOG_INFO, "Loading modules.\n");
if (init_modules() == -1) {
xcpmd_log(LOG_ERR, "Failed to load all modules\n");
goto xcpmd_err;
}
//This relies on both acpi-events and acpi-module having been initialized
xcpmd_log(LOG_INFO, "Initializing ACPI state.\n");
acpi_initialize_state();
// Load policy
xcpmd_log(LOG_INFO, "Loading policy.\n");
if (load_policy_from_db() == -1) {
xcpmd_log(LOG_WARNING, "Error loading policy from DB; continuing...\n");
}
#ifdef POLICY_FILE_PATH
if (load_policy_from_file(POLICY_FILE_PATH) == -1) {
xcpmd_log(LOG_WARNING, "Error loading policy from file %s; continuing...\n", POLICY_FILE_PATH);
}
#endif
#ifdef XCPMD_DEBUG
xcpmd_log(LOG_DEBUG, "Rules loaded:\n");
print_rules();
#endif
xcpmd_log(LOG_INFO, "Entering event loop.\n");
event_dispatch();
goto xcpmd_out;
xcpmd_err:
ret = -1;
xcpmd_out:
uninit_modules();
acpi_events_cleanup();
xcpmd_dbus_cleanup();
#ifndef RUN_STANDALONE
closelog();
#endif
return ret;
}
