tree 7ee723f2dd9534c15062ae2e1bc23218787fd3f9
parent 8e8963b80dc77b9bbe4e3dd19b5925b300b66fc3
author Simon Glass <sjg@chromium.org> 1538416520 -0600
committer Simon Glass <sjg@chromium.org> 1539081627 -0600

sandbox: Restore blocking I/O on exit

At present sandbox sets non-blocking I/O as soon as any input is read
from the terminal. However it does not restore the previous state on
exit. Fix this and drop the old os_read_no_block() function.

This means that we always enable blocking I/O in sandbox (if input is a
terminal) whereas previously it would only happen on the first call to
tstc() or getc(). However, the difference is likely not important.

Signed-off-by: Simon Glass <sjg@chromium.org>