From cd23cc61cad82645b89d56ef32ef439815dddc3b Mon Sep 17 00:00:00 2001
From: Zach Brown <zab@versity.com>
Date: Mon, 14 Feb 2022 10:23:55 -0800
Subject: [PATCH] Add mount option test bash functions

Add some test functions which work with mount options.

Signed-off-by: Zach Brown <zab@versity.com>
---
 tests/funcs/fs.sh | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/tests/funcs/fs.sh b/tests/funcs/fs.sh
index b68bcfe7..3345688a 100644
--- a/tests/funcs/fs.sh
+++ b/tests/funcs/fs.sh
@@ -362,3 +362,49 @@ t_wait_for_leader() {
 		done
 	done
 }
+
+t_set_sysfs_mount_option() {
+	local nr="$1"
+	local name="$2"
+	local val="$3"
+	local opt="$(t_sysfs_path $nr)/mount_options/$name"
+
+	echo "$val" > "$opt"
+}
+
+t_set_all_sysfs_mount_options() {
+	local name="$1"
+	local val="$2"
+	local i
+
+	for i in $(t_fs_nrs); do
+		t_set_sysfs_mount_option $i $name $val
+	done
+}
+
+declare -A _saved_opts
+t_save_all_sysfs_mount_options() {
+	local name="$1"
+	local ind
+	local opt
+	local i
+
+	for i in $(t_fs_nrs); do
+		opt="$(t_sysfs_path $i)/mount_options/$name"
+		ind="$name_$i"
+
+		_saved_opts[$ind]="$(cat $opt)"
+	done
+}
+
+t_restore_all_sysfs_mount_options() {
+	local name="$1"
+	local ind
+	local i
+
+	for i in $(t_fs_nrs); do
+		ind="$name_$i"
+
+		t_set_sysfs_mount_option $i $name "${_saved_opts[$ind]}"
+	done
+}