> Is your concern over weather Unix Time is a time_t or a timeval?
Yes, you could put it that way. I view Unix Time as referring strictly to the time_t part (seconds since Epoch) but I might be the one in the wrong. I didn't remember that the timeval part existed in the standard.
Is your concern over weather Unix Time is a time_t or a timeval?
A time_t shouldn't go backwards (in normal operation), but a timeval does.
[1] http://pubs.opengroup.org/onlinepubs/9699919799/functions/ge...