From 10cf8e46f43a7a2094e4d861c1296db6af0e0fa1 Mon Sep 17 00:00:00 2001
From: Frederick Grose <fgrose@sugarlabs.org>
Date: Sun, 27 Nov 2022 13:52:27 -0500
Subject: [PATCH] fix(load_fstype): avoid false positive searchs

Refactor to avoid substring matches
  and to speed processing.
Also avoid xtracing.
---
 modules.d/99base/dracut-lib.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
index 218cb13b91..14f20d78ab 100755
--- a/modules.d/99base/dracut-lib.sh
+++ b/modules.d/99base/dracut-lib.sh
@@ -1140,5 +1140,10 @@ remove_hostonly_files() {
 # returns OK if kernel_module is loaded
 # modprobe fails if /lib/modules is not available (--no-kernel use case)
 load_fstype() {
-    strstr "$(cat /proc/filesystems)" "${2:-$1}" || modprobe "$1"
+    local - fs _fs="${2:-$1}"
+    set +x
+    while read -r d fs || [ "$d" ]; do
+        [ "${fs:-$d}" = "$_fs" ] && return 0
+    done < /proc/filesystems
+    modprobe "$1"
 }