From e586b988f661663d2f6cb94270acd53052466ad7 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Sat, 18 Sep 2021 09:19:10 -0700
Subject: [PATCH] boot-qemu.sh: Use stdbuf instead of unbuffer

To avoid needing the "expect" package, use "stdbuf" from coreutils to control output buffering. While at it, switch to line-buffering to avoid stdout/stderr mixing.
---
 boot-qemu.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boot-qemu.sh b/boot-qemu.sh
index 2ab7de6..37feb6d 100755
--- a/boot-qemu.sh
+++ b/boot-qemu.sh
@@ -382,7 +382,7 @@ function invoke_qemu() {
         done
     fi
 
-    ${INTERACTIVE} || QEMU=(timeout --foreground "${TIMEOUT:=3m}" unbuffer "${QEMU[@]}")
+    ${INTERACTIVE} || QEMU=(timeout --foreground "${TIMEOUT:=3m}" stdbuf -oL -eL "${QEMU[@]}")
     set -x
     "${QEMU[@]}" \
         "${QEMU_ARCH_ARGS[@]}" \