Hmm, how is one actually supposed to use O_SPECIFICFD in real life though? I mean, picking some specific FD nr can work in trvial, single threaded programs mayb

Hmm, how is one actually supposed to use O_SPECIFICFD in real life though? I mean, picking some specific FD nr can work in trvial, single threaded programs maybe, but how is that supposed to work on typical generic userspace code that has many threads and many libraries/subsystems all running in the same address space (and fd space) that want to take possession of some fd? I mean are apps supposed to block fd ranges ahead of time, by dup()ing /dev/null a couple of times, or how is that supposed to work? not getting this...