Repeat iostat header after rows-3 instead of a hardcoded 20.

Use ioctl() to get the window size in iostat(8), and force a new
header to be prepended to the output every time the current
window size changes.  Change the number of lines before each
header to `rows - 3' when the terminal is resized, so that the
full terminal length can be used for output lines.

PR:		bin/119705
Submitted by:	keramida
Approved by:	maxim
MFC after:	2 weeks

0 files changed, 0 insertions, 0 deletions