1 files changed, 10 insertions, 1 deletions
diff --git a/src/backup.h b/src/backup.h
index 9629cb7..289ee62 100644
--- a/src/backup.h
+++ b/src/backup.h
@@ -29,6 +29,15 @@
 
 #include "options.h"
 
-int backup(const OptionsBackup &opts);
+class BackupError : public std::runtime_error
+{
+  public:
+    explicit BackupError(const std::string &message)
+        : std::runtime_error(message)
+    {
+    }
+};
+
+void backup(const OptionsBackup &opts);
 
 #endif /* BACKUP_H */