From bfb57bb6c419db07b1bc601e1187afc75f8b618d Mon Sep 17 00:00:00 2001
From: W Scott Johnson <wscottjohnson5@gmail.com>
Date: Sat, 10 Jul 2021 01:55:14 -0400
Subject: [PATCH] Fix disk_io notification bug

This fixes a bug that makes disk_io stats incorrect and forever increasing, due to the "baseline" stats always being 0.

[This commit](https://github.com/dustinkirkland/byobu/commit/e991e535e44a7809c9150d32527ca6fa3d2baba3) intended to catch read failures, but actually just always sets x1 to 0. This is because "read" returns 1 if no newline is read, and the code doesn't write a newline to $cache.

Instead, this just always trusts that read works, as x1 is set even if there's no newline. A more robust way might be via cat.
---
 usr/lib/byobu/disk_io | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr/lib/byobu/disk_io b/usr/lib/byobu/disk_io
index c6c6e02e..5a7e2c1d 100755
--- a/usr/lib/byobu/disk_io
+++ b/usr/lib/byobu/disk_io
@@ -62,7 +62,7 @@ __disk_io() {
 		if [ $t2 -le $t1 ]; then
 			rate=0
 		else
-			[ -r "$cache" ] && read x1 < "$cache" || x1=0
+			[ -r "$cache" ] && read x1 < "$cache"
 			local a1= a2= a3= a4= a5= a6= a7= a8= a9= a10=
 			read a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 other < "/sys/block/$disk/stat"
 			if [ "$i" = "read" ]; then