1a0ffa1e737e65312abac63dcf4b44e1ac0e1642
The old flag name was a bit of a misnomer, as /dev/urandom cannot be "drained". Once it's initialized it's initialized and then is good forever. (Only /dev/random has a concept of 'draining', but we never use that, as it's an obsolete interface). The flag is still useful though, since it allows us to suppress accesses to the random pool while it is not initialized, as that trips up the kernel and it logs about any such attempts, which we really don't want.
systemd - System and Service Manager
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