core, systemctl: add support for irreversible jobs

Add a new job mode: replace-irreversibly. Jobs enqueued using this mode
cannot be implicitly canceled by later enqueued conflicting jobs.
They can however still be canceled with an explicit "systemctl cancel"
call.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/core/transaction.h b/src/core/transaction.h
index 67ace4da0b..12f9194927 100644
--- a/src/core/transaction.h
+++ b/src/core/transaction.h
@@ -33,9 +33,10 @@ struct Transaction {
         /* Jobs to be added */
         Hashmap *jobs;      /* Unit object => Job object list 1:1 */
         Job *anchor_job;      /* the job the user asked for */
+        bool irreversible;
 };
 
-Transaction *transaction_new(void);
+Transaction *transaction_new(bool irreversible);
 void transaction_free(Transaction *tr);
 
 int transaction_add_job_and_dependencies(