1 files changed, 9 insertions, 0 deletions

diff --git a/lib/intentions-queue b/lib/intentions-queue
index 802d1ca..f244e1b 100755
--- a/lib/intentions-queue
+++ b/lib/intentions-queue
@@ -40,6 +40,7 @@ intent_something() {
     # shellcheck disable=SC2016
     printf '%s\n' \
       '#!/bin/sh' \
+      '# called by '"${0}" \
       '[ -n "${base_dir}" ] || . '"${base_dir}"'/lib/load-configuration'
     cat
     printf 'rm "%s"\n' "${intentions_directory}/intention.${next_number}"
@@ -91,7 +92,15 @@ intentions_left() {
 # execute_all_intentions
 # executes all intentions
 execute_all_intentions() {
+  exec 6> "${intentions_lock_file}"
+  if ! verbose_flock 6; then
+    >&2 echo 'someone already executes intentions - no need to schedule a second run'
+    return
+  fi
+
   while intentions_left -n; do
     execute_intention
   done
+
+  flock -u 6
 }