/*
* Wait until a console user logs in (or don't wait if one is already logged in).
*/
static bool
wait_for_console_user(char *devname)
{
CFStringRef key;
CFMutableArrayRef keys;
Boolean ok;
SCDynamicStoreRef store = NULL;
CFRunLoopSourceRef rls;
CFStringRef user;
uid_t uid;
gid_t gid;
bool ret = false;
store = SCDynamicStoreCreate(NULL, CFSTR("com.apple.nofs"),
console_user_changed_cb, NULL);
if (store == NULL) {
return ret;
}
/* check if a console user is already logged in */
user = SCDynamicStoreCopyConsoleUser(store, &uid, &gid);
if (user != NULL) {
CFRelease(user);
ret = true;
goto out;
}
/* wait for a notification that a console user logged in */
keys = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
key = SCDynamicStoreKeyCreateConsoleUser(NULL);
CFArrayAppendValue(keys, key);
CFRelease(key);
ok = SCDynamicStoreSetNotificationKeys(store, keys, NULL);
CFRelease(keys);
if (!ok) {
syslog(LOG_ERR, "nofs: SCDynamicStoreSetNotificationKeys() failed");
goto out;
}
rls = SCDynamicStoreCreateRunLoopSource(NULL, store, -1);
if (rls == NULL) {
syslog(LOG_ERR, "nofs: SCDynamicStoreCreateRunLoopSource() failed");
goto out;
}
CFRunLoopAddSource(CFRunLoopGetCurrent(), rls, kCFRunLoopDefaultMode);
CFRunLoopRun();
CFRunLoopSourceInvalidate(rls);
CFRelease(rls);
ret = true;
out:
if (store) {
CFRelease(store);
}
return ret;
}
static Boolean RegisterConsoleUserChangeCallback() {
CFStringRef consoleUserNameChangeKey = NULL;
CFArrayRef notificationKeys = NULL;
Boolean success = TRUE;
write_log(LOG_NOTICE, "Creating ConsoleUser key.");
consoleUserNameChangeKey = SCDynamicStoreKeyCreateConsoleUser(NULL);
if(consoleUserNameChangeKey == NULL) {
write_log(LOG_ERR, "Couldn't create ConsoleUser key!");
success = FALSE;
goto EXIT;
}
write_log(LOG_NOTICE, "Creating notification key array.");
notificationKeys = CFArrayCreate(NULL, (void*)&consoleUserNameChangeKey,
(CFIndex)1, &kCFTypeArrayCallBacks);
if(notificationKeys == NULL) {
write_log(LOG_ERR, "Couldn't create notification key array!");
success = FALSE;
goto EXIT;
}
write_log(LOG_NOTICE, "Setting up DynamicStore notification.");
if(SCDynamicStoreSetNotificationKeys(dsSession, notificationKeys, NULL) ==
FALSE) {
write_log(LOG_ERR, "Couldn't set up DynamicStore notification!");
success = FALSE;
goto EXIT;
}
EXIT:
if(notificationKeys != NULL) {
CFRelease(notificationKeys);
notificationKeys = NULL;
}
if(consoleUserNameChangeKey != NULL) {
CFRelease(consoleUserNameChangeKey);
consoleUserNameChangeKey = NULL;
}
return success;
}
int InstallLoginLogoutNotifiers(CFRunLoopSourceRef* RunloopSourceReturned)
{
SCDynamicStoreContext DynamicStoreContext = { 0, NULL, NULL, NULL, NULL };
SCDynamicStoreRef DynamicStoreCommunicationMechanism = NULL;
CFStringRef KeyRepresentingConsoleUserNameChange = NULL;
CFMutableArrayRef ArrayOfNotificationKeys;
Boolean Result;
*RunloopSourceReturned = NULL;
DynamicStoreCommunicationMechanism = SCDynamicStoreCreate(NULL, CFSTR("logKext"), LoginLogoutCallBackFunction, &DynamicStoreContext);
if (DynamicStoreCommunicationMechanism == NULL)
return(-1); //unable to create dynamic store.
KeyRepresentingConsoleUserNameChange = SCDynamicStoreKeyCreateConsoleUser(NULL);
if (KeyRepresentingConsoleUserNameChange == NULL)
{
CFRelease(DynamicStoreCommunicationMechanism);
return(-2);
}
ArrayOfNotificationKeys = CFArrayCreateMutable(NULL, (CFIndex)1, &kCFTypeArrayCallBacks);
if (ArrayOfNotificationKeys == NULL)
{
CFRelease(DynamicStoreCommunicationMechanism);
CFRelease(KeyRepresentingConsoleUserNameChange);
return(-3);
}
CFArrayAppendValue(ArrayOfNotificationKeys, KeyRepresentingConsoleUserNameChange);
Result = SCDynamicStoreSetNotificationKeys(DynamicStoreCommunicationMechanism, ArrayOfNotificationKeys, NULL);
CFRelease(ArrayOfNotificationKeys);
CFRelease(KeyRepresentingConsoleUserNameChange);
if (Result == FALSE) //unable to add keys to dynamic store.
{
CFRelease(DynamicStoreCommunicationMechanism);
return(-4);
}
*RunloopSourceReturned = SCDynamicStoreCreateRunLoopSource(NULL, DynamicStoreCommunicationMechanism, (CFIndex) 0);
return(0);
}