From 395af43f1c24fa58849d3242ce40bc6a2550a202 Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 15:19:53 +0000
Subject: [PATCH] Upload New File
---
src/tests/vm/mmap-unmap.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 src/tests/vm/mmap-unmap.c
diff --git a/src/tests/vm/mmap-unmap.c b/src/tests/vm/mmap-unmap.c
new file mode 100644
index 0000000..d35a79e
--- /dev/null
+++ b/src/tests/vm/mmap-unmap.c
@@ -0,0 +1,23 @@
+/* Maps and unmaps a file and verifies that the mapped region is
+ inaccessible afterward. */
+
+#include <syscall.h>
+#include "tests/vm/sample.inc"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+#define ACTUAL ((void *) 0x10000000)
+
+void
+test_main (void)
+{
+ int handle;
+ mapid_t map;
+
+ CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+ CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
+
+ munmap (map);
+
+ fail ("unmapped memory is readable (%d)", *(int *) ACTUAL);
+}
--
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