From 3ea1ab9675d69d19b56e97781923c60fa048c723 Mon Sep 17 00:00:00 2001
From: Antoine Belvire <antoine.belvire@opensuse.org>
Date: Tue, 31 Jul 2018 13:25:21 +0200
Subject: [PATCH] Add ConditionPathIsReadWrite= to service files

In order to prevent any error in case fs is read-only (e.g. openSUSE
Kubic).
---
 btrfsmaintenance-refresh-cron.sh | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/btrfsmaintenance-refresh-cron.sh b/btrfsmaintenance-refresh-cron.sh
index 2bf5f8e..dfd04e6 100755
--- a/btrfsmaintenance-refresh-cron.sh
+++ b/btrfsmaintenance-refresh-cron.sh
@@ -70,6 +70,26 @@ EOF
 	esac
 }
 
+#
+# Add "ConditionPathIsReadWrite=" for each mount point.
+#
+refresh_conditions() {
+    MOUNT_POINTS="$1"
+    SERVICE="$2"
+    if [ -z "$MOUNT_POINTS" ]; then
+        rm -rf /etc/systemd/system/${SERVICE}.service.d
+    else
+        mkdir -p /etc/systemd/system/${SERVICE}.service.d/
+        echo "[Unit]" > /etc/systemd/system/${SERVICE}.service.d/readwrite.conf
+        OIFS="$IFS"
+        IFS=:
+        for mount_point in $MOUNT_POINTS; do
+            echo "ConditionPathIsReadWrite=$mount_point" >> /etc/systemd/system/${SERVICE}.service.d/readwrite.conf
+        done
+        IFS="$OIFS"
+    fi
+}
+
 if [ "$1" = 'uninstall' ]; then
 	for SCRIPT in btrfs-scrub btrfs-defrag btrfs-balance btrfs-trim; do
 		case "$BTRFS_TIMER_IMPLEMENTATION" in
@@ -94,6 +114,11 @@ case "$BTRFS_TIMER_IMPLEMENTATION" in
 		refresh_timer "$BTRFS_DEFRAG_PERIOD" btrfs-defrag
 		refresh_timer "$BTRFS_BALANCE_PERIOD" btrfs-balance
 		refresh_timer "$BTRFS_TRIM_PERIOD" btrfs-trim
+                refresh_conditions "$BTRFS_BALANCE_MOUNTPOINTS" btrfs-balance
+                refresh_conditions "$BTRFS_SCRUB_MOUNTPOINTS" btrfs-scrub
+                refresh_conditions "$BTRFS_TRIM_MOUNTPOINTS" btrfs-trim
+                refresh_conditions "$BTRFS_DEFRAG_PATHS" btrfs-defrag
+                systemctl daemon-reload
 		;;
 	*)
 		refresh_cron "$BTRFS_SCRUB_PERIOD" btrfs-scrub.sh