BPF bug or not?

[Yevmenkin, Maksim N, CSCIO]

All,

I've just found that read from /dev/bpfX never return EAGAIN/EWOULDBLOCK.
It means that when you do a non blocking read and there is no data you will
always get 0.

Does it suppose work this way?

A non blocking read from pipe return EAGAIN/EWOULDBLOCK if there is no data
and
pipe was opened as O_RDWR, and 0 when pipe was opened as O_RDONLY.

Thanks,
emax


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