backup-progress: time out `du` after $du_timeout seconds

2 files changed, 11 insertions, 2 deletions

diff --git a/backup-progress.in b/backup-progress.in
index 90492fb..4e67f92 100755
--- a/backup-progress.in
+++ b/backup-progress.in
@@ -26,13 +26,19 @@ for backupID in "${!backups[@]}"; do
       | tail -n1
   )
   last_size=$(
-    du -sb "${dir}/${last}" \
+    timeout ${du_timeout} du -sb "${dir}/${last}" \
       | awk '{print $1}'
   )
+  if [ -z "${last_size}" ]; then
+    last_size='4096'
+  fi
   current_size=$(
-    du -sb "${dir}/aktuell" \
+    timeout ${du_timeout} du -sb "${dir}/aktuell" \
       | awk '{print $1}'
   )
+  if [ -z "${current_size}" ]; then
+    current_size='0'
+  fi
   size="${current_size}"
   decimal=''
   for unit in '' k M G T P Y; do
diff --git a/backup.conf b/backup.conf
index 8d7fd4e..63e3ec5 100644
--- a/backup.conf
+++ b/backup.conf
@@ -37,3 +37,6 @@ recognSubdirRegex="home\|boot\|root\|erich"
 
 # directory for caching valuable information in backup-statistics
 cacheDir="/path/to/cache/directory"
+
+# timeout for `du` in backup-progress [seconds]
+du_timeout=10