tron@zhadum.org.uk (Matthias Scheler) writes:

> 	Kirk Russell <kirk@ba23.org> writes:
>> I am using NetBSD 3.0.  I found that dlopen() will block if the given
>> path is a fifo:
>> 
>> 	$ mkfifo -m a+wrx afifo
>> 	$ ksh -c "LD_PRELOAD=./afifo /usr/bin/true"
>> 	[... blocked ...]
>> 
>> Is this expected behaviour?
>
> Yes. Processes get blocked if they try to read from a FIFO and there is
> no writer.

More to the point, the *open* will block if there's nothing on the
other end (and O_NONBLOCK hasn't been given).

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