1 files changed, 13 insertions, 5 deletions

diff --git a/fake-msi.c b/makemsi.c
index 7bdcdc6..8b78448 100644
--- a/fake-msi.c
+++ b/makemsi.c
@@ -1,15 +1,13 @@
 #include <assert.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <stdint.h>
-#include <stdbool.h>
-#include <stdarg.h>
 #include <string.h>
+#include <limits.h>
 #include <uchar.h>
+
 #include <err.h>
 
 #include <fcntl.h>
-#include <sys/mman.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -19,8 +17,18 @@
 #include "subproc.h"
 #include "uchars.h"
 
+/*
+ * The same routine MsiCloseHandle is used by our client to dispose of
+ * three kinds of structure that _we_ think of as completely different
+ * types. So we must ensure all three start with distinct magic number
+ * fields, so as to know what kind we're being asked to close.
+ */
 typedef struct MsiTypePrefix {
-    enum { MAIN, VIEW, RECORD } type;
+    enum {
+        MAIN = 0x2B7FB8B8,
+        VIEW = 0x1570B0E3,
+        RECORD = 0x62365065
+    } type;
 } MsiTypePrefix;
 
 typedef struct MsiMainCtx {