extern "C" HANDLE cygwin_logon_user const struct passwd *passwd_entry const char *password Given a pointer ot a passwd entry of a user and a cleartext password, returns a HANDLE to an impersonation token for this user which can be used in a subsequent call to cygwin_set_impersonation_token to impersonate that user. This function can only be called from a process which has the required NT user rights to perform a logon. See also the chapter "New setuid concept" in the Cygwin user's guide. See also cygwin_set_impersonation_token extern "C" void cygwin_set_impersonation_token const HANDLE token Use this function to enable the token given as parameter as impersonation token for the next call to setuid or seteuid. Use cygwin_set_impersonation_token together with cygwin_logon_user to impersonate users using password authentication. See also the chapter "New setuid concept" in the Cygwin user's guide. See also cygwin_logon_user