On Fri, Jul 15, 2016 at 10:22:04AM +0800, Liu Shuo wrote: > > You have no warranty whatsoever that descriptor table has not been changed > > by that point. You should *NEVER* use sys_close() on failure exit paths > Could you please elaborate why we're not sure descriptor table's changing at > the point?
Because that could be called by one thread while another (having guessed the descriptor you are about to get) does close()/dup2()/etc.
