Which *nix ? BSD : System V

[Guy Harris]

> An alternative might be to include "sys/ioctl.h", which is present on 4.1bsd,
> 4.2bsd, and System III.  If it's also present on System V (and the Berkeley
> FIONREAD ioctl call hasn't been picked up AT&T)

It is, and it hasn't.  (In fact, the S5 "sys/ioctl.h" is an empty file;
it was a silly idea in the first place - you really want "termio.h" for
terminals, "mtio.h" for mag tapes, etc.)

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy