I'm trying to start samba service using launchctl from OSX app as root, but I get error status -60031. I can run without problems the command in Terminal:

sudo launchctl load -F /System/Library/LaunchDaemons/com.apple.AppleFileServer.plist`

In the objective-c code, I'm using (I know it's deprecated, but that really shouldn't be the issue here) AuthorizationExecuteWithPrivileges method.

Here's the code:

    NSString *command = @"launchctl";

    // Conversion of NSArray args to char** args here (not relevant part of the code)

    OSStatus authStatus = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, &_authRef);
    if (authStatus != errAuthorizationSuccess) {
        NSLog(@"Failed to create application authorization: %d", (int)authStatus);
        return;
    }

    FILE* pipe = NULL;
    AuthorizationFlags flags = kAuthorizationFlagDefaults;
    AuthorizationItem right = {kAuthorizationRightExecute, 0, NULL, 0};
    AuthorizationRights rights = {1, &right};

    // Call AuthorizationCopyRights to determine or extend the allowable rights.
    OSStatus stat = AuthorizationCopyRights(_authRef, &rights, NULL, flags, NULL);
    if (stat != errAuthorizationSuccess) {
        NSLog(@"Copy Rights Unsuccessful: %d", (int)stat);
        return;
    }

    OSStatus status = AuthorizationExecuteWithPrivileges(_authRef,
                                                         command.UTF8String,
                                                         flags,
                                                         args,
                                                         &pipe);
    if (status != errAuthorizationSuccess) {
        NSLog(@"Error executing command %@ with status %d", command, status);
    } else {
        // some other stuff
    }

I have also tried using different flags then kAuthorizationFlagDefaults, but that led to either the same problem or error code -60011 -> invalid flags.

What am I doing wrong here, please?