From 57cc48e3ed5b2127fb69bd907c338557bf37b2c1 Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 15:18:17 +0000
Subject: [PATCH] Upload New File
---
src/tests/vm/mmap-read.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 src/tests/vm/mmap-read.c
diff --git a/src/tests/vm/mmap-read.c b/src/tests/vm/mmap-read.c
new file mode 100644
index 0000000..c0f23a1
--- /dev/null
+++ b/src/tests/vm/mmap-read.c
@@ -0,0 +1,32 @@
+/* Uses a memory mapping to read a file. */
+
+#include <string.h>
+#include <syscall.h>
+#include "tests/vm/sample.inc"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void)
+{
+ char *actual = (char *) 0x10000000;
+ int handle;
+ mapid_t map;
+ size_t i;
+
+ CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+ CHECK ((map = mmap (handle, actual)) != MAP_FAILED, "mmap \"sample.txt\"");
+
+ /* Check that data is correct. */
+ if (memcmp (actual, sample, strlen (sample)))
+ fail ("read of mmap'd file reported bad data");
+
+ /* Verify that data is followed by zeros. */
+ for (i = strlen (sample); i < 4096; i++)
+ if (actual[i] != 0)
+ fail ("byte %zu of mmap'd region has value %02hhx (should be 0)",
+ i, actual[i]);
+
+ munmap (map);
+ close (handle);
+}
--
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