Follow-up Comment #2, bug #67726 (group make):
> For some work we're doing [2][3], we're emulating a FIFO using CUSE/FUSE to
> allow tracking when consumers disappear to avoid lost tokens.
This is one of those good intentions that has the potential to cause trouble,
because this feature lets the other side to not track their tokens. Which
locks the the other side to your jobserver and a specific file type and
hinders interoperability.
> After you open the FIFO and consume the token, do not close it until after
> you've written the token back
A program that is coded to return the tokens, will not at the same time be
coded to close the fifo prematurely, right?
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