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-rw-r--r--lockfile.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/lockfile.h b/lockfile.h
index d26ad27b2b..16775a7d79 100644
--- a/lockfile.h
+++ b/lockfile.h
@@ -129,11 +129,17 @@ struct lock_file {
/*
* If a lock is already taken for the file, `die()` with an error
* message. If this flag is not specified, trying to lock a file that
- * is already locked returns -1 to the caller.
+ * is already locked silently returns -1 to the caller, or ...
*/
#define LOCK_DIE_ON_ERROR 1
/*
+ * ... this flag can be passed instead to return -1 and give the usual
+ * error message upon an error.
+ */
+#define LOCK_REPORT_ON_ERROR 2
+
+/*
* Usually symbolic links in the destination path are resolved. This
* means that (1) the lockfile is created by adding ".lock" to the
* resolved path, and (2) upon commit, the resolved path is