1 files changed, 36 insertions, 0 deletions
diff --git a/maildrop/deliverdotlock.h b/maildrop/deliverdotlock.h
new file mode 100644
index 0000000..19bf905
--- /dev/null
+++ b/maildrop/deliverdotlock.h
@@ -0,0 +1,36 @@
+#ifndef	deliverdotlock_h
+#define	deliverdotlock_h
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+// When delivering to a mailbox, and there's an exception, the mailbox
+// must be truncated BEFORE the dot lock is released.  Override the cleanup()
+// virtual function to do the truncation first.
+//
+////////////////////////////////////////////////////////////////////////////
+
+#include	"config.h"
+#include	"dotlock.h"
+#include	<sys/types.h>
+#include	<sys/stat.h>
+
+class DeliverDotLock : public DotLock {
+
+	void	cleanup();
+
+	int	truncate_fd;
+	off_t	truncate_size;
+public:
+	DeliverDotLock();
+	~DeliverDotLock();
+
+	void	trap_truncate(int f, off_t size)
+		{
+			truncate_size=size;
+			truncate_fd=f;
+		}
+	void	remove_trap() { truncate_fd= -1; }
+	void	truncate();
+} ;
+#endif