From c783897453c370bd2a019cc64b099545742b9c2c Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 15:13:13 +0000
Subject: [PATCH] Upload New File
---
src/tests/vm/mmap-close.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 src/tests/vm/mmap-close.c
diff --git a/src/tests/vm/mmap-close.c b/src/tests/vm/mmap-close.c
new file mode 100644
index 0000000..d016ee3
--- /dev/null
+++ b/src/tests/vm/mmap-close.c
@@ -0,0 +1,27 @@
+/* Verifies that memory mappings persist after file close. */
+
+#include <string.h>
+#include <syscall.h>
+#include "tests/vm/sample.inc"
+#include "tests/arc4.h"
+#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\"");
+
+ close (handle);
+
+ if (memcmp (ACTUAL, sample, strlen (sample)))
+ fail ("read of mmap'd file reported bad data");
+
+ munmap (map);
+}
--
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