A question about read() system call!!

[Akira Takiguchi]

In article <1991May29.180840.6512 at inferno.peri.com> shane at inferno.peri.com (Shane Bouslough) writes:
[I pointed out that open(,O_NDELAY,) doesn't make read() non-blocking.
>BZZZZZZZZZZZ! <- game show buzzer
>
>And the Manual looketh upon O_NDELAY and spake:
[deleted]

     I was half wrong, since there are systems (SysV, posix) that makes read
non-blocking if the descriptor is opened with O_NDELAY (or O_NONBLOCK) set.
But there ARE systems (BSD) that behaves differently so it is safer to
recommend fcntl(O_NDELAY) especially when the original poster didn't mention
about his OS.
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