[erlang-questions] where is os:getuid() ?

[derek]

Erlang/OTP 18 [erts-7.1] [source-2882b0c] [64-bit] [smp:8:8]
[async-threads:10] [hipe] [kernel-poll:false]

Eshell V7.1  (abort with ^G)
1> os:getpid().
"24801"
2> os:getuid().
** exception error: undefined function os:getuid/0
3>

I'm surprised such a fundamental api call is not there in erlang and has to
be done in some c_driver like this one? wonder how many other POSIX system
calls are not implemented in erlang standard library

https://github.com/sergey-miryanov/erlang-setuid/blob/master/src/setuid.erl
https://github.com/sergey-miryanov/erlang-setuid/blob/master/priv/setuid_drv.c
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