Re: Improved tail patch

[Paul Jarc]

address@hidden wrote:
> Select always returns ready for a fifo.

No.  It always returns ready for a regular file.  For a pipe or
socket, it returns nonready if there is a writer on the other end, but
there is no data to read.  To see this, try
"{ sleep 60; echo foo; } > /tmp/test.fifo" and let the reader call
select during the sleep.  In your tests, the writer exits immediately,
which signals EOF.  So read() will return EOF without blocking in that
case, and select() reports that.


paul