From ecb09bee344ac6e8f25621f05aee48cde6df19b9 Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 15:20:24 +0000
Subject: [PATCH] Upload New File
---
src/tests/vm/mmap-write.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 src/tests/vm/mmap-write.c
diff --git a/src/tests/vm/mmap-write.c b/src/tests/vm/mmap-write.c
new file mode 100644
index 0000000..46e8043
--- /dev/null
+++ b/src/tests/vm/mmap-write.c
@@ -0,0 +1,32 @@
+/* Writes to a file through a mapping, and unmaps the file,
+ then reads the data in the file back using the read system
+ call to verify. */
+
+#include <string.h>
+#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;
+ char buf[1024];
+
+ /* Write file via mmap. */
+ CHECK (create ("sample.txt", strlen (sample)), "create \"sample.txt\"");
+ CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+ CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
+ memcpy (ACTUAL, sample, strlen (sample));
+ munmap (map);
+
+ /* Read back via read(). */
+ read (handle, buf, strlen (sample));
+ CHECK (!memcmp (buf, sample, strlen (sample)),
+ "compare read data against written data");
+ close (handle);
+}
--
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